JP2003159563A - Method for repairing coating surface of vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method for repairing the coating surface of a vehicle, efficiently drying and curing either one of a resin composition for putty formed from an ultraviolet curable resin or/and a thermosetting resin, a resin composition for a primer surfacer and a topcoat paint to well finish the coating surface of the vehicle and to sharply shorten a work time. <P>SOLUTION: The method for repairing the coating surface of the vehicle includes a process for applying putty P to the damaged place N, to which pretreatment is applied if necessary, of the coating surface of the vehicle and curing the same to fill the damaged place N with the putty P, a process for grinding the surface of the putty P applied to the damaged place N, a process for uniformly applying the primer surfacer on the coating surface M including the surface of the ground putty P by spray coating to form a primer surfacer layer and a process for applying topcoating to the primer surfacer layer. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a method for repairing a painted surface of a vehicle, a resin composition for putty for repairing a painted surface of a vehicle, a resin composition for a primer surfacer, and ultraviolet rays or infrared rays for these compositions. The present invention relates to a device for irradiating and drying and curing.

[0002]

2. Description of the Related Art Conventionally, as a method for repairing a scratch or a dent formed on a painted surface of a vehicle such as an automobile, a damaged portion is appropriately combined with a metal surface treatment agent, putty, an undercoat paint, an intermediate paint, etc. A general method is to form an underlayer that covers the base material, and then apply a finish coating with a topcoat paint. In addition, various resin compositions are used as materials for forming the underlayer used in such a repairing method.

However, although at least several kinds of resin compositions are usually used for forming a base, most of these resin compositions take time to cure and dry. Most of these resin compositions are thermosetting resins that are cured by heat. Therefore, infrared rays are irradiated to cure and dry these resin compositions. However, the time required for these thermosetting resin compositions to cure or dry is relatively long, and the work efficiency tends to decrease.

Therefore, an ultraviolet curable resin has been developed as a curable resin having a short curing time. At the same time, research is also progressing on whether or not this ultraviolet-curable resin can be used as putty for use on the surface of vehicles such as automobiles. For example, Japanese Patent Publication No. 60-30690 discloses a UV-curable epoxy composition that can be used as a putty for automobiles. In addition, JP-A-62-19107
Japanese Unexamined Patent Publication (Kokai) No. 5 describes that an ultraviolet curable resin is used as a top coat constituting the outermost layer of the top coat film.

Of course, since the ultraviolet curable resin is cured by absorbing ultraviolet rays, it is cured by using an ultraviolet irradiation device for irradiating ultraviolet rays after it is filled in a damaged portion of a painted surface of a vehicle.

[0006]

By the way, when a coated surface of a vehicle is repaired, an ultraviolet curable resin has come to be used, and workability has been improved to some extent.
However, it was reported that all of the materials used in the combination of putty, undercoat paint, intermediate paint, etc. that make up the base were made of UV-curable resin to greatly improve workability and finish in the same way as before. Is not there yet.

That is, as a method for repairing damage to the painted surface of a vehicle, there is no established repair method using an ultraviolet curable resin for all of the base materials, and the ultraviolet curable resin is used for all the base materials. It has been desired to develop a repairing method that has good workability and good workability.

Therefore, the present invention has been made from the above viewpoint, and provides a method for repairing a painted surface of a vehicle, which uses an ultraviolet-curable resin having excellent quick-drying properties, has a good finish, and greatly reduces the working time. Is an issue.

The present invention also provides a resin composition for putty, a resin composition for primer surfacer, and a topcoat paint for repairing a painted surface of a vehicle, which is composed of an ultraviolet curable resin having excellent quick-drying property, reactivity and good usability. The challenge is to provide either.

Further, the present invention is a resin composition for putty, a resin composition for primer surfacer, comprising a thermosetting resin,
An object of the present invention is to provide a drying and curing device that efficiently dries and cures any of the topcoat paints.

[0011]

Means for Solving the Problems As a result of intensive research to solve the above problems, the present inventors have used a putty and a primer surfacer made of an ultraviolet curable resin having excellent quick-drying property as a base material, At least one of these contains an ultraviolet-transparent material and / or an ultraviolet-absorbing material, and a primer surfacer layer is uniformly formed by spray coating on the portion filled with putty, resulting in a good finish on the vehicle coated surface and workability. They found that they could be repaired well and completed the present invention. That is, the present invention is as follows.

[0012] The present invention is a method for repairing a damaged portion due to irregularities on a vehicle coated surface and / or a coating film defect, wherein the damaged portion, which has been pretreated as necessary, is provided with an ultraviolet-transparent material and And / or a step of filling a putty made of a UV-polymerizable composition containing a UV-absorbing material and curing the putty to fill the damaged portion with the putty, a step of polishing the surface of the putty filled in the damaged portion, and a polishing step. The resulting surface of the putty is uniformly spray-coated with a primer surfacer having a viscosity capable of being spray-coated and comprising a UV-polymerizable composition capable of containing a UV-transmissive material and / or a UV-absorbing material. The step of linearly curing the primer surfacer coating film to form a primer surfacer layer, and the step of applying an overcoat on the primer surfacer layer obtained in the step Characterized in that it comprises and.

In the method for repairing a vehicle coated surface according to the present invention, since either the putty, the primer surfacer, or the paint is made of the UV-polymerizable composition, it is irradiated with UV rays in order to dry and cure them. A drying device is used.

That is, the putty and primer surfacer made of the above-mentioned UV-polymerizable composition can be dried and cured by absorbing UV rays. By utilizing the characteristics, if the putty or primer surfacer applied to the damaged portion is positively irradiated with ultraviolet rays, the putty or primer surfacer can be quickly dried and cured.

Therefore, the time required for the drying and curing, which is the most important and time-consuming work in the painting process, can be greatly reduced, and the time required for repairing the painted surface of the vehicle can be greatly reduced accordingly. It can be shortened.

The present invention also relates to irregularities on the vehicle coating surface and / or
Alternatively, it is a method of repairing a damaged portion due to a loss of a coating film, where a putty made of a thermosetting material is embedded in the damaged portion which has been pretreated as necessary, and the putty is hardened by curing the putty. And a step of polishing the surface of the putty that has been filled in the damaged portion, and a paint surface including the surface of the putty that has been polished contains a thermosetting material and has a viscosity that enables spray application. Spray coating the surfacer uniformly, curing the resulting primer surfacer coating film to form a primer surfacer layer, and applying a top coat on the primer surfacer layer obtained in the step, and including a step of drying. Is characterized by.

Further, in the present invention, a drying device for irradiating infrared rays is used to dry and cure the putty containing the thermosetting material, the primer surfacer, and the paint.

That is, the drying device according to the present invention includes a casing having an opening, an ultraviolet irradiation device having an irradiation unit for irradiating ultraviolet rays provided in the casing, and an infrared irradiation device having an irradiation unit for irradiating infrared rays. It is composed of a first blower that cools the ultraviolet ray irradiation section and a second blower that blows the air warmed by the infrared ray irradiation section to the opening side.

Therefore, the method for repairing the coated surface of the vehicle of the present invention is not limited to the case where the putty or coating which is cured by irradiating with ultraviolet rays as described above is used, but the putty or the coating which is cured by irradiation with heat is used. It is also applicable when using.

The ultraviolet irradiation device may be any device capable of emitting ultraviolet light. An example of this is a momentary lighting type ultraviolet (UV) lamp. Similarly, the infrared irradiation device may be any device that can emit infrared light. For example, an infrared (IR) heater or an infrared lamp can be used. Further, the first blower and the second blower can be provided inside the housing or outside the housing.

The first blower and the second blower may be the same blower. That is, a single blower cools the ultraviolet ray irradiation section and blows the air warmed by the infrared ray irradiation section to the opening side.

As a result, the putty or paint made of the thermosetting material can be dried by heat and air.

As described above, since a single device can be used to accelerate the curing of all putties and paints, it is not necessary to replace two devices as in the conventional case. Further, in the case where each irradiation device and the blower can be individually controlled, each device can be operated efficiently, so that the coating materials such as putty and paint can be cured (dried) in a shorter time.

Further, if a blower having different functions is provided by a single blower, and if each irradiating device is efficiently arranged with respect to the face plate portion of the holding plate, the vehicle repair device can be made compact and lightweight. The operability can be improved.

Further, the drying device according to the present invention includes a distance detecting sensor for detecting a distance from the drying device to a damaged portion where the coating material is applied (hereinafter referred to as a coating surface), and the drying device along the coating surface. And a moving device for moving the drying device along the coating surface so that the value detected by the distance detection sensor falls within a predetermined range. Good.

Since the moving device for supporting the drying device at a constant distance from the coating surface coated with the coating material is provided, the coating material is always dried under constant conditions. That is, even if an inexperienced operator handles the vehicle repair device, a good quality dry surface can be obtained.
Further, since the drying device is automatically installed at the position where the coating material applied to the damaged portion is efficiently dried, the labor of the operator can be greatly reduced. Here, the coating material applied to the damaged portion is a coating material that is cured by drying or putty.

That is, when the coating material applied to the coated surface is dried, the drying device is moved while confirming the dry state of the coating material, so that the coating material is surely dried. Therefore, even if an inexperienced operator handles the vehicle repair device, a good quality dry surface can be obtained. Moreover, since the position of the drying device with respect to the coating surface is automatically changed in response to the drying of the coating material, it is possible to reduce the labor of the operator without the need for time management for drying.

As the moving device, a vertical frame,
A horizontal frame that is slidable in the vertical direction of the vertical frame, and is slidably provided in the axial direction of the horizontal frame and in a direction orthogonal to this axial direction, and is rotatable in the vertical direction using the horizontal frame as a rotation axis. An arm frame supported by the arm frame may be provided, and the drying device may be angularly provided at the tip of the arm frame. That is, the moving device that supports the drying device includes a plurality of movable parts, and the plurality of movable parts can be moved to move the drying device along the coating surface.

Further, the drying device includes an infrared irradiation device for irradiating the coating material coated on the coating surface with infrared rays, and a blower for blowing the air warmed by the infrared rays of the infrared irradiation device to the coating material coated on the coating surface. It is also possible to have a configuration including. In the drying device having this structure, the coating material applied to the coating surface can be directly irradiated with infrared rays, and thus the radiant heat can accelerate the drying of the coating material. Further, since air heated by infrared rays, that is, warm air is blown to the coating material, the coating material can be dried in a shorter time due to these synergistic effects. In addition,
To warm the air blown by the blower, an infrared irradiation device dedicated to the blower may be provided.

Further, as the distance detecting sensor, an oscillating unit for emitting an ultrasonic wave, a receiving unit for receiving the ultrasonic wave oscillated from the oscillating unit, and an ultrasonic wave oscillated by the oscillating unit until reaching the receiving unit. And a conversion processing unit that measures the time and converts it into a distance. That is, an ultrasonic distance measuring sensor or the like can be adopted. In addition,
The distance detection sensor used in the method for repairing the painted surface of the vehicle of the present invention is not limited to the above ultrasonic distance measuring sensor, of course, and measures the distance from the coated surface coated with the coating material to the drying device. Any sensor can be used.

In addition, as the dry state detecting sensor, it is desirable to use a sensor which detects the solvent evaporated in the air from the coating material when the coating material is dried and recognizes the dry state of the coating material. For example, a gas sensor or the like which considers that the amount of the solvent (concentration) contained in the air has reached a predetermined value or less and that it has reached the dry state can be employed. Note that the dry state detection sensor used in the method for repairing a coated surface of a vehicle of the present invention is not limited to one that detects a volatilized solvent to recognize the dry state, and for example, monitors the temperature of the coated surface to detect the dry state. It may be a sensor for recognition. That is, any sensor that can recognize the dry state may be used.

Further, the drying device of the present invention has a housing having an opening at one end surface, a radiation portion provided in the housing for radiating infrared rays to the coating surface, and air inside the housing having an opening. Of the air blown to the coated surface via at least a part of it again, a circulation path for flowing into the housing,
It is equipped with an outside air inlet that guides outside air into the housing, and a flow rate adjusting mechanism that adjusts the flow rate of the air that re-enters the inside of the housing through the circulation path. The paint applied to the surface of the putty may be dried.

According to the drying apparatus of the present invention having such a configuration, the housing wraps the portion to be dried, that is, the entire coating surface coated with the coating material, and the infrared rays emitted from the infrared ray emitting device are emitted. While being diffusely reflected between the inner wall surface of the housing and the coating surface, the entire surface is uniformly radiated and absorbed. Further, the infrared rays act on the inside of the coating surface to heat the coating surface from the inside. As a result, the polymerization of the pigment contained in the paint is accelerated, and at the same time, the volatilization of the solvent contained in the paint is promoted while suppressing the formation of unnecessary paint (dry coating film) that inhibits the volatilization of the solvent. It becomes possible.

Further, since the drying device is provided with a circulation path and a blower for producing a circulation flow, the solvent volatilized from the paint is rapidly diffused by this circulation flow. In addition, the air circulating in the housing absorbs radiation heat from the painted surface and gradually rises in temperature, but if the flow rate adjustment mechanism reduces the circulation rate of the air, the air is introduced from the outside air inlet into the housing. The flow rate of the air to be introduced increases and the temperature inside the housing decreases. Therefore, unnecessary heating of the coated surface due to the circulating flow is suppressed, and ideal drying conditions are obtained. The flow rate adjusting mechanism may adjust the flow rate of the air flowing in the circulation path by enlarging and contracting the passage cross section of the circulation path.

Further, in the step of polishing the surface of the putty filled in the damaged portion in the present invention, the substrate portion holding the abrasive on the surface facing the damaged portion and the substrate portion parallel to the substrate portion with a predetermined space therebetween. A polishing tool provided with a holding plate to which a polishing member for polishing the surface of putty that is filled in a damaged portion is attached to a predetermined surface, and an elastic member interposed between the substrate portion and the holding plate are used. The substrate portion is connected to a first polishing member fixed to the holding plate with a predetermined space and an edge portion of the first polishing member and is rotated about a connection line with the first polishing member as an axis. And two polishing members.

The second polishing member is rotatably provided within a preset movable range in a direction approaching the holding plate from a position flush with the first polishing member. The second polishing member polishes the details of the surface of the putty filled in the damaged portion, and the second polishing member and the first polishing member are used at the same time to bring the surface of the putty filled in the damaged portion into contact with each other. It is characterized by polishing the surface of the putty.

In the polishing tool, first, irregularities such as small marks formed on the repair surface are polished with a small polishing surface consisting only of the second polishing member, and then a large portion consisting of the second polishing member and the first polishing member. Polish on the polishing surface. That is, point-shaped polishing is performed by the second polishing member, and then planar polishing is performed by simultaneously using the first polishing member and the second polishing member.

Further, by using the first polishing member and the second polishing member, unlike the polishing using the edge portion, even though it is point-like polishing, it comes into surface contact with the repair surface and is stable. A feeling of operation is obtained. Therefore, the repaired surface can be polished into a flat surface by a simple operation without requiring highly skilled technology. Further, since the polishing paper held on the polishing surface of the polishing tool comes into surface contact with the repair surface, it is possible to suppress local excessive wear of the polishing paper. The present polishing tool can also be suitably used when polishing the coated surface in which the surface of the putty filled in the damaged portion is coated with the primer surfacer.

Further, since the portion corresponding to the end of the polishing tool is formed of a plate made of a resin material or the like, it has high durability.
Since the surface is in contact with the surface to be polished, the endurance is improved. Therefore, polishing using the end of the polishing tool can be continuously performed. Also, local excessive wear of the sandpaper can be suppressed.

Further, in the polishing tool of the present invention, the contact area with the surface to be polished can be made large even when polishing using the end portion, and the operation of the polishing tool itself does not require particularly careful work. Therefore, the old coating film can be removed in a short time.

Further, in the step of polishing the surface of the putty filled in the damaged portion in the present invention, a polishing surface for holding an abrasive is provided on the surface, and the polishing surface of the putty filled in the damaged portion is rotated by itself. A plurality of movable substrates provided with a rotary substrate portion for polishing the surface and a polishing surface which holds an abrasive on the surface and is provided on the periphery of the rotary substrate portion and which rotates about a connecting line to the rotary substrate portion as an axis. And a urging means for urging the polishing surface of the movable substrate portion in a direction to be flush with the polishing surface of the rotating substrate portion and absorbing the shock transmitted from the movable substrate portion. It is characterized in that the surface of the putty filled in the damaged portion is polished.

In this polishing tool, the polishing surface is composed of a plurality of surfaces, and at the time of polishing using the end portion of the polishing tool, the putty in which the damaged surface is filled with the polishing surface provided on the movable substrate portion. It is brought into contact with the surface of and polished. The polishing surface of the movable substrate portion is configured to have a sufficiently small area with respect to the polishing surface of the entire polishing tool.

Therefore, during polishing using the end portion, the contact area between the polishing surface and the surface of the putty filled in the damaged portion does not change significantly, and the polishing tool and the putty filled in the damaged portion do not change. The contact pressure with the surface can be easily adjusted. Therefore, the stability of the polishing tool with respect to the surface of the putty filled in the damaged portion is improved, and it is possible to polish the surface of the putty filled in the damaged portion into a desired shape by an easy operation without requiring skill. it can.

In the present invention, the coating device for applying the paint used in the primer surfacer and the overcoating to the application surface is also a device for mixing the compressed air and the paint to atomize the application and apply it to the surface to be applied. is there.

The coating apparatus is provided with a compressed air supply passage for supplying compressed air and a coating material supply passage for supplying coating material, and a spray port for spraying the coating material on the coating apparatus body. A paint injection nozzle having
An adjusting means for opening and closing the injection port to adjust the amount of paint sprayed is a needle valve slidable inside the paint spray nozzle, and the needle valve has a tapered tip portion on the spray port side. , And at least one linear portion, which is continuous with the tip and has a predetermined length, is provided inside the paint injection nozzle.

Further, the linear portion forms a taper portion having a diameter increasing from the spray port toward the paint spray nozzle.

As described above, since the diameter of the taper portion increases from the spray port toward the paint spray nozzle, the spray port is gradually opened each time the trigger part is operated, so that the spray amount of the paint is limited. To be done. That is, it is possible to prevent the paint from being suddenly sprayed in a large amount.

Further, in the overcoating step of applying a predetermined coating material to the damaged portion in the present invention, a base member which is rotationally driven by a driving device and has a mounting surface orthogonal to the rotation axis thereof, and which faces the base member. A polishing member that is provided and polishes the surface of the putty that is filled in the damaged portion, and an impact that occurs when the polishing member polishes the surface of the putty that is filled in the damaged portion is interposed between the base member and the polishing member. An elastic member for absorbing the elastic member, wherein the elastic member has a groove opening to the polishing member side and extending in the peripheral direction from the center of the elastic member, and the opening edge of the groove is the center of the elastic member. It is characterized in that the surface of the paint applied to the damaged portion is polished by using a polishing tool which is a straight line extending from the edge to the periphery.

Since the opening edge of the groove portion of the polishing tool has a straight line, it is possible to perform polishing in two stages of linear polishing and planar polishing. This is done by first grinding (cutting) with a line on the convex part of the putty surface filled in the damaged part, and then
It is possible to polish (polish) on the surface.

In addition, in the polishing tool, this force can be absorbed by the shock absorbing member interposed between the elastic member and the base portion to avoid the bounce phenomenon. Further, by doing so, phenomena such as resonance vibration and waviness of the polishing tool can be avoided.

If a cloth material, especially a towel material, is used for the polishing member, frictional heat generated between the surface of the putty filled in the damaged portion due to the rotational movement of the polishing member can be absorbed properly. It will be possible. The reason is that it is necessary to leave an appropriate amount of frictional heat. This is because some frictional heat is transferred between the polishing member and the surface of the putty that is filled in the damaged portion, and is useful for grinding fine irregularities on the surface of the putty that is filled in the damaged portion.

In addition to the above-mentioned polishing member, since the groove portion having a straight line at the opening edge is provided so as to extend from the center of the elastic member to the peripheral edge, two-stage polishing of the line and the surface can be performed. First, a linear portion of the opening edge is point-contacted with a convex portion scattered on the surface of the putty that is filled in the damaged portion, and the line is gradually ground as the polisher is operated. After that, polish (polish) with the surface without grooves
Is done. As a result, it becomes possible to repair the surface of the putty filling the damaged portion more smoothly.

Further, since the groove portion is provided so as to extend linearly from the center of the elastic member to the peripheral edge, it is possible to easily perform the cutting and polishing work of the corner portion and the edge portion which are difficult to work with the conventional polisher. became. this is,
A hard member having elasticity is used as the elastic member,
In addition, the polishing member is made of a material softer than the elastic member. Therefore, a complicated shape such as a corner portion or an edge portion can be easily transmitted to the elastic member via the polishing member.

Further, since the groove portion extends radially from the center of the elastic member to the vicinity of the periphery thereof, it is possible to grind many uneven portions at one time via the polishing member. Then, the work for both grinding and polishing can be performed in a wider area at the same time, so that the work time is shortened and the work efficiency is improved.

Further, the groove portion is formed such that the width of the groove becomes wider from the center of the elastic member toward the peripheral edge.
Therefore, the ground contact area at the center of the polishing member interposed between the elastic member and the surface of the putty filled in the damaged portion is
It becomes possible to grind and polish the surface of the putty that is filled in the damaged portion in balance with the ground contact area of the peripheral edge. In other words, it is not necessary for the operator to have a feeling of learning due to the high level of skill and experience that has been required of the worker so far, and even an inexperienced person can work relatively efficiently. Further, since the contact area between the center of the polishing member and the peripheral edge of the polishing member is substantially uniform, it is possible to avoid local excessive wear of the polishing member.

In addition, the polishing tool of the present invention can be used in the step of polishing the surface of the putty in the step of polishing the surface of the putty filled in the damaged portion, and / or the primer surfacer in the step of forming the primer surfacer layer. It can be suitably used for the work of polishing the surface.

[0057]

BEST MODE FOR CARRYING OUT THE INVENTION <First Embodiment> The vehicle coating method according to this embodiment will be described in detail below.

The vehicle repair method according to the present embodiment is a method for repairing a damaged portion due to the unevenness of the vehicle coated surface and / or a coating film defect, and UV light is applied to the damaged portion which is pretreated as necessary. Filling a putty made of a UV-polymerizable composition containing a transparent material and / or a UV-absorbing material,
Figure 1 (i) ~ Figure 1 (i
v) the putty filling step, the putty surface polishing step shown in FIG. 1 (v) for polishing the surface of the putty filled in the damaged portion N, and the coating surface M including the polished putty surface that transmits UV light. Of a UV-curable composition containing a polymerizable material and / or a UV-absorbing material, a primer surfacer having a viscosity capable of spray coating is uniformly spray-coated, and the primer surfacer coating film obtained is UV-cured to form a primer surfacer layer. Forming J Fig. 1 (vi)-(viii)
The step of forming a primer surfacer layer J shown in 1) and the topcoating step shown in FIGS. 1 (ix) and (x) of applying a topcoating coating on the primer surfacer layer obtained in the step. Hereinafter, each step of the repair method to will be described in detail in order.

Putty Filling Step In the putty filling step shown in FIGS. 1 (i) to 1 (iv), pretreatment is first performed according to the state of the damaged portion. As a pretreatment, the coating originally applied to the vehicle (hereinafter referred to as "old coating")
It may be said that) degreasing, removal of old coating, feather edge removal, etc.

Degreasing of the old coating film is a pretreatment which is carried out in most cases even in a general repairing method which does not use an ultraviolet curable resin. Also in the repair method of this embodiment, degreasing is performed regardless of the state of the damaged portion N. Degreasing of the old coating film can be performed by treating a commonly used degreasing agent according to a generally performed procedure.

First, the damaged portion N and its surroundings are cleaned. Then, it is thoroughly dried. After that, the oil is wiped off with a cloth (waste) impregnated with a degreasing agent such as silicon off.

Next, the removal of the old coating film, which is different from the degreasing treatment, depends on the state of the damaged portion N and the damaged portion N.
And the treatment applied to the old coating film in and around it. When the damage is a dent, the old coating film in the dent portion is almost always removed. Further, when the damage is a line scratch, a scratch, a nail, or the like, the old coating film has already been removed. Therefore, it is determined whether or not the old coating film is further removed depending on the state of the damage. Here, the removal of the old coating film is also a pretreatment that has been conventionally performed, so that it can be performed by a conventional method using a device such as a disk sander or a double sander.

The work of removing the feather edge is a work performed at the same time as or after the work of removing the old coating film,
This is a work to give a smooth inclination to the cross section of the coating film from the old coating film to the steel plate surface or the resin part surface exposed by the removal of the old coating film. The angle of inclination is generally about 27 to 54 degrees. The work of removing the feather edge is also a work that has been performed conventionally, and the repair method of this embodiment can also follow the conventional method. The device used here may be a double action sander or the like. The double action sander will be described in detail later.

After that, the old coating film-removed surface and its periphery are preferably washed by air blow or the like, and degreasing is performed as described above. In this step, a putty made of a UV-polymerizable composition containing a UV-transmissive material and / or a UV-absorbing material is embedded in the damaged portion N thus pretreated as necessary, to form a putty. The damaged portion N is filled with putty by curing with ultraviolet rays.

The above-mentioned UV polymerizable composition used as a putty in the method for repairing a painted surface of a vehicle according to the present embodiment is an UV polymerizable composition which is generally used as a raw material for putty for automobiles and the like. / Or a resin composition containing an ultraviolet absorbing material. More specifically, a UV polymerizable prepolymer, a UV polymerizable monomer, a UV polymerization initiator, and a UV transparent material and /
Alternatively, the resin composition for putty of the present embodiment containing an ultraviolet absorbing material may be used.

In the method for repairing the painted surface of a vehicle according to this embodiment, a putty made of an ultraviolet-polymerizable composition containing the above-mentioned ultraviolet-transparent material and / or an ultraviolet-absorbing material, particularly a resin composition for putty according to the present embodiment. By using, the reaction of the resin when irradiated with ultraviolet rays can be carried out rapidly, and the workability can be improved.

The UV-polymerizable prepolymer, UV-polymerizable monomer and UV-polymerization initiator contained in the resin composition for putty used in the method for repairing a vehicle painted surface of the present embodiment are generally used as putty for vehicles such as automobiles. What is used is mentioned without particular limitation.

Specific examples of the UV polymerizable prepolymer include radical polymerization type prepolymers. For example, ester acrylate, urethane acrylate, epoxy acrylate, amino resin acrylate, acrylic resin acrylate, unsaturated polyester, etc .: cationic polymerization type prepolymer, for example, epoxy resin, resin having vinyl ether, etc .: and an aryl group or acryloyl at the molecular end. Examples thereof include a thiol / ene addition type prepolymer in which an oligomer having a group and a polythiol are combined.

Specific examples of the UV-polymerizable monomer include 2-ethylhexyl acrylate, ethoxydiethylene glycol acrylate, phenoxyethyl acrylate, 2-hydroxypropyl acrylate, tetrahydrofurfuryl acrylate, dicyclopentenyl acrylate, neopentyl glycol diacrylate. , Polyethylene glycol diacrylate, bis (acryloxyethyl) bisphenol A, merimytrol propane triacrylate, pentaerythritol triacrylate, dipentaerythritol hexaacrylate, and other radical monomers, vinylcyclohexene monooxide, hydroxybutyl vinyl ether, cyclohexanedimethanol Divinyl ether, cyclohexene diepoxy , Cationic monomers such as caprolactone polyols.

Specific examples of the UV polymerization initiator include various carbonyl compounds as radical polymerization initiators, and onium salts as cationic polymerization initiators. Further, examples of the initiator for the thiol / ene addition type polymer include a hydrogen abstraction type initiator.

Regarding the compounding ratios of the above-mentioned UV-polymerizable prepolymer, UV-polymerizable monomer and UV-polymerization initiator in the resin composition for putty used in the method for repairing the painted surface of the vehicle of the present embodiment, these are for putty for automobiles and the like. The ratio can be the same as the mixing ratio when it is usually used as a raw material.

The ultraviolet ray transmitting material and the ultraviolet ray absorbing material contained in the resin composition for putty used in the method for repairing the painted surface of the vehicle of the present embodiment are a material capable of transmitting an ultraviolet ray and a material capable of absorbing an ultraviolet ray, respectively. It is not particularly limited as long as it is present, but preferably a blue-violet to purple organic pigment or inorganic pigment is used. Specific examples of such pigments include azo pigments such as dioxazine compounds. Further, as the ultraviolet ray transmitting material contained in the resin composition for putty, as the ultraviolet ray absorbing material, for example, when a pigment is used, the progress of the work can be visually confirmed because the putty is colored,
This will improve workability.

Further, the content of the above-mentioned UV-transmissive material and / or UV-absorbing material in the resin composition for putty used in the method for repairing a vehicle painted surface of this embodiment, specifically, based on the total amount of the composition. The content is about 1 to 30% by weight.

Furthermore, the resin composition for putty used in the method for repairing the painted surface of a vehicle according to the present embodiment contains these UV-polymerizable prepolymer, UV-polymerizable monomer, UV-polymerization initiator, and / or UV-transmissive material, and / or In addition to the essential components of the ultraviolet absorbing material, a supplement, a pigment, a filler, a defoaming agent, a surface modifier, a solvent and the like may be contained as optional components.

As the putty resin composition in this embodiment, an ultraviolet ray polymerizable prepolymer, an ultraviolet ray polymerizable monomer, an ultraviolet ray polymerization initiator, and an ultraviolet ray permeable material,
And / or it is desirable that the composition is composed of an essential component of the ultraviolet absorbing material and a resin component which is non-reactive with each component.

In addition, in the resin composition for putty used in the method for repairing the painted surface of a vehicle of the present embodiment, for example, these essential components are added in appropriate proportions, and if necessary, the optional components are added in appropriate amounts. Each is adjusted by blending. The compounding ingredients of various components are appropriately selected depending on the types of essential components used.

Further, as the composition of the resin composition for putty in this embodiment, specifically, about 20 to 30% by weight of the UV-polymerizable prepolymer and about 1% of the UV-polymerizable monomer are used.
A composition containing 5 to 30% by weight, an ultraviolet polymerization initiator of about 1 to 10% by weight, and a pigment of about 40 to 60% by weight is used.
98% by weight, about 1 to 30% by weight of a UV transparent material and / or an ultraviolet absorbing material, and about 1 to 5% by weight of a non-reactive resin
The composition etc. which were mix | blended are mentioned. The above-mentioned UV-polymerizable prepolymer, UV-polymerizable monomer, UV-polymerization initiator, pigment, UV-transmissive material, and / or UV-absorbing material and non-reactive resin may be added separately and mixed. .

In addition, the value shown as the content of the pigment used in the putty resin composition is in the case where the ultraviolet-transparent material and / or the ultraviolet-absorbing material is the above blue-violet to purple organic pigment or inorganic pigment. The amount does not include these.

In addition to the blue-purple to purple organic or inorganic pigments used as the ultraviolet-transparent material and / or the ultraviolet-absorbing material, pigments used in the resin composition for putty generally include calcium carbonate and sulfuric acid. Examples thereof include powders of barium, clay, talc, white carbon, and extenders such as balloons.

The resin composition for putty contains an ultraviolet-transparent material and / or an ultraviolet-absorbing material, so that the energy due to ultraviolet irradiation is more efficient than that of a conventional ultraviolet-curable resin composition that does not contain these materials. It can be used, that is, it can be cured with a small amount of ultraviolet irradiation, thereby shortening the curing time and improving the work efficiency in repairing the painted surface of a vehicle.

Further, in the present embodiment, such a putty, preferably a resin composition for putty, is embedded in the damaged portion N of the vehicle-painted surface which has been pretreated if necessary. The putty can be embedded in the same manner as in the past. In a preferred method, the amount of putty which is slightly larger than the volume to be filled is set as the filling amount of the putty, and the putty is filled in several times. At the first time, a proper amount of the filling amount is embedded in the damaged portion N with a plastic spatula so as to be squeezed.

Further, the remaining putty is divided into appropriate amounts from the above, and the putty is applied again with a plastic spatula so as not to entrap air. After putting the putty, the putty embedded part is slightly raised from the old paint film surface,
The thickness of the putty embedded in the putty is 0.
The thickness is about 1 to 1.0 mm. Therefore, the thickness of the embedded portion of this putty is approximately 0.4 to 3.0 mm, although it depends on the thickness of the old coating film.

After the putty is embedded, the putty embedded in the putty embedding portion is dried by the first drying device. Since the putty used in the method for repairing the vehicle painted surface of the present embodiment is an ultraviolet polymerizable composition, it is cured by irradiation with ultraviolet light. That is, it is desirable that the first drying device used in the method for repairing the vehicle coated surface of the present embodiment is a device that generates light including ultraviolet rays, such as a UV lamp. Hereinafter, a detailed description of this first drying device will be given.

In the step of drying the paint applied to the surface D2 of the putty filled in the damaged portion N and / or the ground putty in the present embodiment, the case having the opening and the case provided in the case are provided. And an infrared irradiation device having an irradiation part for irradiating infrared rays, a first blower for cooling the irradiation part for ultraviolet rays, and opening the air warmed by the irradiation part for infrared rays The paint applied to the surface D2 of the putty filled in the damaged portion N and / or the polished putty is dried using a first drying device including a second blower that blows air to the part side. In this embodiment, the first blower and the second blower will be described as being the same.

First, the structure of the first drying apparatus 100 will be described with reference to FIGS. 3 and 4. The first drying device 100 shown in FIG. 3 has a housing 3 having an opening 3a, and an ultraviolet irradiation device 4 having an irradiation part 4a shown in FIGS. Infrared irradiation device 5 having irradiation unit 5a shown in FIGS. 3 and 4 for irradiating infrared rays and infrared rays.
And a blower 7 that cools the ultraviolet irradiation unit 4a and blows the air warmed by the infrared irradiation unit 5a to the opening 3a side of the housing 3.

Further, the housing 3 is composed of a top plate 1 made of aluminum and a side wall portion 2, and an opening 3a is provided on one side.
Further, the inner surface of the housing 3 is provided with unevenness (not shown) by embossing. In addition, the protective boot 6 which is expandable and contractible is provided at the edge of the housing 3 located in the opening 3a. Further, inside the housing 3, a square-shaped holding plate 10 for holding the ultraviolet irradiation device 4, the infrared irradiation device 5, and the blower 7 is provided.

On the lower surface 10a of the holding plate 10, an infrared irradiating section 5a is arranged in parallel with the lower surface 10a and extending in four directions from the center of the lower surface. 5, UV irradiation unit 4 shown in FIG.
a is provided parallel to the lower surface. That is, the holding plate 1
An infrared irradiation part 5a is provided in the shape of a cross at the center of 0, and ultraviolet irradiation parts 4a are arranged near the four corners of the holding plate 10, respectively. The lower surface 10a of the holding plate 10
A partition wall 9 is provided in each of the irradiation sections 4 and
a and 5a are classified.

In the infrared irradiation unit 5a shown in FIGS. 5 and 6, four mid-infrared sheathed heaters are provided in a cross shape as the infrared irradiation device 5. Hereinafter, infrared irradiation device 5
Is referred to as an IR heater 5.

Further, the ultraviolet irradiation unit 4a has an instantaneous lighting type metal halide lamp (4k) as the ultraviolet irradiation device 4.
w) is provided. This metal halide lamp
As shown in FIG. 2, there is a peak of spectral energy near the wavelength of 410 nm. In addition, hereinafter, the ultraviolet irradiation device 5 is U
It is called a V lamp 4.

Each of these irradiation devices 4, 5 is provided with a reflection plate 4b, 5b for guiding each irradiation light to the side of the opening 3a of the housing 3. The unevenness provided on the inner surface side of the housing 3 diffusely reflects the reflected light reflected by each of the reflection plates 4b and 5b so that the repair work surface can be uniformly irradiated. In addition, the protective boot 6 provided in the opening 3a
Is for extending the protective boot 6 so as to contact or approach the periphery of the repair work surface and irradiate the irradiation light from each irradiation device 4, 5 without leaking to the outside. Therefore, it is possible to protect the worker from ultraviolet rays and prevent the vehicle from being damaged when the housing 3 and the vehicle are inadvertently contacted with each other. If a reflective material is provided on the inner surface of the protective boot 6, more efficient irradiation can be performed.

The number and arrangement of these irradiation devices 4 and 5 can be set arbitrarily. For example, one UV lamp 4 may be provided in the center of the lower surface of the holding plate 10, and four IR heaters 5 may be arranged in parallel with the UV lamp 4. Further, not only the protective boot 6 but also the main body of the housing 3 may be made flexible. For example, the side wall portion 2 shown in FIGS. 3 and 4 may have an independent double wall structure so that the other side wall portion can be pulled out from one side wall portion.

Further, as shown in FIG. 4, the partition wall 9 provided on the lower surface 10a of the holding plate 10 is provided so as to surround the UV lamp 4. The partition wall 9 protects the UV lamp 4 from the heat generated by the IR heater 5. Also,
A protective glass 9b is attached along the peripheral edge of the partition wall 9.

The protective glass 9b is for preventing the fragments of the UV lamp 4 from scattering when the UV lamp 4 is damaged. The protective glass 9 shown in FIG. 4 and FIG.
Quartz glass having a high ultraviolet transmittance is desirable for a, but since it is expensive, heat-resistant (Pyrex (registered trademark)) glass is used in this embodiment. If necessary, a glass plate obtained by stacking heat-resistant (Pyrex) glass and tempered (soda) glass may be used.

On the other hand, as shown in FIGS. 3 and 4, the holding plate 1
On the upper surface 10b of 0, four blowers 7 for blowing air to the irradiation devices 4, 5 and a terminal box 8 for distributing electric power to the irradiation devices 4, 5 and the blower 7 are provided. Each of the blowers 7 is arranged centering directly above the corresponding IR heater 5 and across the adjacent ultraviolet irradiation section 4a. That is, they are arranged in a cross shape with respect to the holding plate 10. A large-diameter axial fan is used for the blower 7, which contributes to weight reduction of the first drying device 100.

Further, the holding plate 10 is provided with a plurality of ventilation holes 10c for guiding the wind from the blower 7 to the respective irradiation parts 4a, 5a. Since the ventilation port 10c is opened across the partition wall 9, the ultraviolet irradiation unit 4a and the infrared irradiation unit 5 are provided.
It is possible to blow air to both a.

The blower 7 and the ventilation port 10c provided in this way cool the UV lamp 4 to enable continuous lighting, and also warm the air warmed by the infrared irradiator 5a to the repair work surface. It is for spraying as. The partition wall 9 is arranged so as to have a large opening area on the side of the infrared ray irradiation section 5a with respect to the ventilation port 10a. Therefore, most of the air blown from the blower 7 is blown to the infrared irradiation unit 5a side.

On the other hand, the side wall portion 2 adjacent to the ultraviolet ray irradiation portion 4a and the partition wall 9 along the side wall portion 2 are provided with exhaust ports 2a and 9a shown in FIG. 4, respectively. The exhaust ports 2a and 9a communicate with each other, and the partition wall 9 and the protective glass 9 are connected.
It is provided to discharge the air in the ultraviolet irradiation unit 4a shown in FIGS. 5 and 6 separated by b.

Further, as shown in FIGS. 3 and 4, the protective boot 6 provided in the housing 3 is also provided with a plurality of ventilation holes 6a. This ventilation hole 6a is provided around the repair work surface of the housing 3
This is for smoothly exhausting the inside of the housing 3 when the protective boot 6 is brought into close contact with the vehicle, that is, when the protective boot 6 is brought into contact with or brought close to the vehicle. Therefore, the air blown out from the blower 7 has a ventilation port 10a, an infrared ray irradiation section 5a, a repair work surface, a ventilation hole 6a, and the outside air, and the ventilation port 1
0a → UV irradiation part 4a → exhaust port 9a → exhaust port 2a →
Move to the outside air. In addition, the diameter of the vent hole is set so that ultraviolet rays do not leak.

Ventilation port 1 of blower 7 and holding plate 10
The quantity of 0c can be set arbitrarily. For example, a small blower dedicated to cooling may be provided directly above the UV lamp 4, and a large blower dedicated to blowing may be provided directly above the IR heater 5. It should be noted that the ventilation port 10a may be provided with a blowing nozzle that ensures the blowing of air to the irradiation units 4 and 5. Further, the ventilation port 1 facing the ultraviolet irradiation part 4a.
A shield louver for protecting the blower 7 from ultraviolet rays may be provided at 0c.

The above is the first drying apparatus 100 according to the vehicle repair apparatus of the present embodiment. Thus a single device 10
At the same time, ultraviolet rays and infrared rays are emitted at 0, and at the same time, the air heated by the infrared rays can be blown to the repair work surface.
In the vehicle repair device of this embodiment, the first drying device 1
A support rack for supporting 00 is provided. Hereinafter, the support rack that supports the first drying apparatus 100 will be described in detail.

7 to 9 show the one provided with the support rack 13 for supporting the first drying device 100. The support rack 13 facilitates irradiation of the repair work surface, and can support the first drying device 100 at an arbitrary height and direction.

The support rack 13 includes a vertical frame 14 made of two steel materials and a horizontal frame 15 slidably held by the vertical frame 14, and the horizontal frame 15 supports the housing 3 so as to be swingable. I'm sorry. That is, the two C steel materials that are the vertical frames 14 are provided with vertically slidable brackets 630, and the horizontal frames 15 that are horizontally slidable are held by the brackets 630.

A shaft 631 having a large-diameter portion at its tip is slidably engaged with the C steel material forming the horizontal frame 15. A locator 632 for rotating the shaft 631 is attached to the shaft 631.
The locator 632 is provided with a handle 633, and by rotating the handle 633, an internal worm gear (not shown) can be rotated to rotate the shaft 631. Since the shaft 631 supports the first drying device 100, the first drying device 100 can be freely swung in the F direction shown in FIG. 8 by rotating the handle 633. ing.

Next, the control means of the above-mentioned first drying device will be described. As shown in FIG. 10, the control means includes a power source 624, a lighting circuit 623 for the UV lamp 4, and a plurality of current relays (relays for opening and closing electrical contacts based on a preset time) 620, 621, 622. And.
The UV lamp 4 is connected to a lighting circuit 23 including a high frequency driver, and the lighting circuit 623 is connected to a power supply 624 via the current relay 21. The IR heater 5 is currently connected to a power source 624 via a relay 620. The blower 7 is also the power source 6 via the current relay 622.
Connected to 24. Therefore, the UV lamp 4, the IR heater 5, and the blower 7 can be individually controlled.

For example, in curing the putty containing the ultraviolet curable resin, the following control can be performed with reference to FIGS. 10 and 11. First, UV lamp 4
Is turned on and the blower 7 is operated. At the same time, each current relay 620, 621, 622 starts counting. Then, when the current relay 622 connected to the blower 7 reaches a predetermined time, the contact is opened to open the blower 7
To stop. At this time, the current relay 620 connected to the IR heater 5 has also reached the predetermined time, and the contact is closed by I
The R heater 5 is operated.

Next, when the current relay 621 connected to the UV lamp 4 reaches a predetermined time, the contact is opened to open the UV lamp 4
To turn off. At this time, the current relay 622 connected to the blower 7 has also reached the predetermined time, so that the contact is closed and the blower 7 is operated again.

Then, when the current relay 620 connected to the IR heater 5 reaches a predetermined time, the contact is opened and the IR heater 5 is stopped. Then, when the current relay 622 connected to the blower 7 reaches a predetermined time, the contact is opened to stop the blower 7.

In this control, the UV lamp 4 is first turned on to induce the chemical reaction of the ultraviolet curable resin, and the blower 7 is operated to suppress the rapid temperature rise of the UV lamp 4. Then, the solvent contained in the putty is volatilized by the infrared rays of the IR heater 5 and the warm air from the blower 7.
At this time, since the IR heater 5 requires a certain period of time to emit infrared rays (heat rays) of a predetermined intensity, the IR heater 5 is operated in advance before turning off the UV lamp 4. Further, the blower 7 starts its operation with a delay to the IR heater 5 so as not to hinder the warm-up of the IR heater 5. Further, the blower 7 stops after the IR heater 5 has stopped for a few seconds to cool the IR heater 5.

Here, regarding the drying of the primer surfacer and the paint (clear) applied after the putty is cured, I
An example of output adjustment of the IR heater 5 and an example of output adjustment of the blower 7 by the output adjustment circuits provided in the R heater 5 and the blower 7 will be described. In drying an arbitrary coating film, first, the outputs of the IR heater 5 and the blower 7 are kept low to the extent that the softness of the coating surface is not impaired, and the inside of the coating film is dried. Subsequently, after maintaining this state for several seconds to several minutes, the outputs of the IR heater 5 and the blower 7 are increased to dry the coating film surface.

As described above, according to the first drying device 100 for irradiating with ultraviolet rays to dry the putty made of the UV-polymerizable composition used in the putty filling step, conventionally,
The time taken to dry the putty can be greatly reduced. This is because the putty used in the method for repairing the painted surface of the vehicle of the present embodiment is an ultraviolet polymerizable composition, the ultraviolet rays are forcibly irradiated from the drying device, and the putty absorbs the irradiated ultraviolet rays.

The putty is cured by the above-mentioned ultraviolet irradiation, and the damaged portion which has been pretreated as necessary is filled with the putty. Here, when the volume of the putty is slightly reduced by curing, the swelling of the putty from the surface of the old coating film may be slightly reduced as compared with that before the curing.

Putty Grinding Step Next, a detailed description will be given of the putty grinding step shown in FIG. First, the first polishing tool used in the method for repairing a vehicle painted surface according to the present embodiment will be schematically described with reference to FIGS. 12 to 18. As shown in FIG. In the step of polishing the surface D1, a polishing surface 25 for holding an abrasive is provided on the surface side of the putty filled in the damaged portion N that faces the surface D1.
The rotating substrate portion 22 that rotates itself and the polishing surface 25 polishes the surface D1 of the putty that is filled in the damaged portion N, and the rotating substrate portion 22 that is provided on the peripheral edge of the rotating substrate portion 22 and holds the abrasive on the surface. A plurality of movable substrate portions 23 provided with a polishing surface that rotates about a connecting line to the rotary substrate 22 and the polishing surface of the movable substrate portion 23 in the same plane as the polishing surface of the rotating substrate portion 22. The surface D1 of the putty filled in the damaged portion N is polished using the first polishing tool 49 that includes the elastic member 24 that urges and absorbs the impact transmitted from the movable substrate portion 23.

Explaining in more detail, the first polishing tool 49
Is a circular holding plate 21 that is removably provided on the rotary shaft 47 of the drive device and that rotates with the rotation of the rotary shaft 47, and a rotary substrate unit that is provided below the holding plate 21 in parallel and at a predetermined interval. 22 and a plurality of movable substrate portions 23, a circular polishing plate 26, an elastic member 24 provided between the polishing plate 26 and the holding plate 21, an adhesive sheet 27 attached to the lower surface of the polishing plate 26, It consists of

The polishing surface 25 for polishing the surface D1 of the putty filled in the damaged portion N as shown in FIG. 1 corresponds to the lower surface of the polishing plate 26 constituting the rotary substrate portion 22 and the movable substrate portion 23. A sandpaper as an abrasive is attached to the polishing surface 25. Here, the lower side and the lower surface indicate the damaged portion N direction in the use state of the first polishing tool 49 according to the present embodiment.

Further, as the drive device for rotating the holding plate 21, a drive device such as a double action sander is preferable, but for example, a small drive device (luter) for making ornaments and the like may be used. In the present embodiment, a polishing tool to be attached to a dust collecting type double action sander having a dust collecting function will be described as an example.

Holding plate 2 detachably mounted on the drive unit
Reference numeral 1 is a circular plate made of resin, metal, or the like, and a mandrel 39 that engages with the rotary shaft 47 of the drive device is provided at a position slightly displaced from the center thereof. The mandrel 39 is supported by the rotary shaft of the drive unit, and the holding plate 21 rotates as the rotary shaft 47 of the drive unit rotates. Here, a male screw is formed on the rotary shaft 47 of the drive device, and a female screw is formed on the mandrel 39 provided on the holding plate 21. Therefore, the holding plate 21 can be easily attached to and detached from the drive device.

On the lower surface of the holding plate 21, a circular polishing plate 26 constituting the rotary substrate portion 22 and the movable substrate portion 23 is provided via an elastic member 24 in parallel with the holding plate 21 and at a predetermined interval. There is. This polishing plate 26 is made of PV having a thickness of 2 mm.
The circular plate is made of a resin material such as C (polyvinyl chloride) and has an outer diameter slightly larger than that of the holding plate 21. In addition, sandpaper is attached to the lower surface of the sheet via an adhesive sheet 27. It should be noted that the surface of the adhesive sheet 27 is provided with a plurality of irregularities so that sandpaper can be easily replaced.

Further, as shown in FIG. 15, on the polishing plate 26, a circle is drawn which passes through a point which advances from the center in the radial direction by about ½ of the radius and is concentric with the polishing plate 26. One cutting line 29 is provided. In addition, a plurality of second cutting lines 30 radially extending from the first cutting line 29 toward the end of the polishing plate 26 are provided at 18 places on the circumference of the first cutting line 29.

Therefore, the polishing plate 26 has a circular panel 42 formed inside the first cutting line 29 and the first cutting line 29.
And a plurality of substantially fan-shaped panels 26 divided by the second cutting line 30. The circular panel 42
And the substantially fan-shaped panel 26 is connected to each panel 50 via an adhesive sheet 27 provided on the lower surface of the polishing plate 26,
Reference numeral 51 denotes a circular polishing plate 26 which does not shift from a predetermined position.
Is formed.

Since the first cutting line 29 has a width of about 1 mm, it is formed outside the first cutting line 29 with respect to the circular panel 42 formed inside the first cutting line 29. Each of the plurality of substantially fan-shaped panels can rotate up and down around the first cutting line 29 as an axis. That is, in the present embodiment, the circular panel 42 forming the inside of the first cutting line 29 serves as the rotating substrate portion 22, and the plurality of substantially fan-shaped panels 26 forming the outside of the first cutting line 29 constitute the movable substrate portion 23. Becomes Hereinafter, the circular panel 42 will be referred to as the rotating substrate unit 22. Further, the substantially fan-shaped panel is referred to as a movable substrate portion 23.

As described above, in the first polishing tool 49 shown in this embodiment, the polishing surface 25 contacting the surface D1 of the putty filled in the damaged portion N is composed of a plurality of surfaces, and the polishing plate 26 is The structure is such that the movable substrate portion 23 corresponding to the end portion rotates up and down with respect to the rotating substrate portion 22 that constitutes the center of the polishing plate 26.

Further, the rotating substrate portion 22 and the movable substrate portion 23
The polishing plate 26 constituting the above is provided with a plurality of dust collecting holes for capturing dust (polishing dust) generated when polishing the surface D1 of the putty filled in the damaged portion N. Specifically, the first dust collecting hole 31 provided at the center of the rotating substrate portion 22 and the second dust collecting hole 3 provided at three equally divided circumferences on the first cutting line 29.
2 and the third dust collecting hole 13 provided on the movable substrate portion 23 and located between the adjacent second dust collecting holes 32 (see FIG. 23).

The dust collecting holes 11, 12, and 13 will be described in detail together with the elastic member 24 provided between the holding plate 21 and the polishing plate 26.

As shown in FIGS. 16 to 18, the elastic member 24 includes the first support member 34 for fixing the circular panel 42 constituting the rotary substrate portion 22 to the holding plate 21, and the movable substrate portion 2.
The second support member 35 for fixing the substantially fan-shaped panel forming the third member to the holding plate 21, and the dust collecting hole 31 inside the first polishing tool 49.
And a side wall member 36 that forms a dust collecting passage 44 that communicates with 32 and 33.

As shown in FIG. 16, the first support member 34 has three diameters equal to those of the rotary substrate portion 22 and three hard sponges each having a substantially fan-shaped outer shape divided into three equal parts. It consists of 37. Then, they are adhered to the rotating substrate portion 22 and the holding plate 21, respectively. In this state, a gap 38 is provided between the first support members 34 adjacent to each other, and the first dust collection hole 31 and the second dust collection hole 32 communicate with each other through this gap 38. Therefore, the first dust collecting hole 31 and the second dust collecting hole 32 form one continuous passage.

The first supporting member 34 is made of a hard sponge having elasticity, but has a large supporting area for the rotating substrate portion 22. As a result, the rotating substrate portion 22 holds the holding plate 21.
It does not move significantly relative to, and is fixed.

The second support member 35 includes a plurality of hard sponges 23 formed in a cylindrical shape, and a coil spring 41 provided so as to be wound around the outer circumference of each hard sponge 23.
And consists of. The hard sponge 23 and the coil spring 41 are provided one by one at substantially the center of each movable substrate portion 23.

The cross-sectional area of the second support member 35 is shown in FIG.
It is sufficiently smaller than the first support member 34 for fixing the rotating substrate portion 22 to the holding plate 21 shown in FIG. 5 and can be easily bent by fingers. Therefore, the fixed state between the holding plate 21 and the movable substrate portion 23 is sufficiently smaller than the fixing strength between the rotating substrate portion 22 and the first support member, and the movable substrate portion 23 can be easily brought close to the holding plate 21 side. It is fixed to the extent that

Therefore, an external force (pressing force) is applied to the movable substrate portion 23.
When the action is performed, the movable substrate portion 23 rotates in a direction approaching the holding plate 21 about the connection line with the rotating substrate portion 22, that is, the first cutting line 29. Further, when the external force applied to the movable substrate portion 23 is removed, the movable substrate portion 23 is caused by the tension of the coil spring 41 and the restoring force of the cylindrical hard sponge 40.
Returns to a position flush with the rotating substrate portion 22. When the external force is continuously applied to the rotating substrate portion 22, the movable substrate portion 23
The upper surface side of the movable plate portion 2 comes into contact with the side edge of the holding plate 21,
The rotation of 3 is restricted.

The movable range of the movable substrate portion 23 is the holding plate 21.
It can be easily changed by changing the diameter or shape. It can also be changed by changing the thickness of the elastic member 24. The movable range of the movable substrate portion 23 is set within a range in which a good polishing surface 25 can be easily obtained when the first polishing tool 49 is operated. Specifically, it is desirable that the movable substrate portion 23 be inclined 20 degrees upward from the position where it is flush with the rotating substrate portion 22.

Next, the side wall member 36 forming the dust collecting passage 44 communicating with the plurality of dust collecting holes 31, 32 and 33 inside the first polishing tool 49 will be described. This side wall member 36 is
As shown in FIG. 17, it is made of a hard sponge formed in a ring shape having a rectangular cross section, and has an inner diameter substantially equal to the diameter of the holding plate 21 and an outer diameter equal to the diameter of the polishing plate 26.
Then, they are adhered along the edge of the polishing plate 26. The virtual line L shown in FIG. 16 indicates the end of the holding plate 21.

With the side wall member 36 arranged on the polishing plate 26, as shown in FIG. 17, the space equal to the thickness of the elastic member 24 formed between the movable substrate portion 23 and the holding plate 21 is the side wall. The member 36 serves as a partition wall for the outside air, and a dust collecting passage 44, which is shielded from the outside air, is formed in the first polishing tool 49. Then, the second dust collecting hole 3 is provided to the dust collecting passage 44.
2, the third dust collecting hole 33 opens.

Here, the holding plate 21 is provided with a suction port 45 which penetrates the holding plate 21 and is connected to the dust collecting passage 44 (see FIG. 18). This suction hole 45 is connected to a suction device provided with a drive device and using a negative pressure as an intake source, and dust generated during polishing is collected in the dust collection holes 31, 32, 33 → dust collection passage 44 → suction hole 45. → It is supplemented via the suction device. 17 and 18 are AA ′ end views and B of FIG.
-B 'is an end view.

As described above, in the first polishing tool 49, dust generated during polishing between the surface to be polished and the polishing plate 26 is sucked from the dust collecting passage 44 and efficiently guided to the suction device having the negative pressure source. You can

Next, a method of using the first polishing tool 49 used in the method for repairing the vehicle painted surface of this embodiment will be described with reference to FIG. When removing the old coating film remaining on the surface D1 of the putty filled in the damaged portion N, first, only the movable substrate portion 23 is brought into contact with the old coating film and polished. At this time, the sandpaper stuck to the polishing surface is No. 60-80.
No. 2 sandpaper is used for polishing while replacing the surface D1 of the putty filled in the damaged portion N according to the polishing state.

As shown in FIG. 19, first, the first polishing tool 49 is applied to the vicinity of the highest point P of the swelling of the surface D1 of the putty filled in the damaged portion N, and polishing is slowly started.
Then, the entire surface D1 of the putty is gradually polished. At this time, at the boundary between the putty and the old coating film surface, it is easy to make the surface D1 of the putty and the old coating film surface flush with each other by moving so that a strong force is applied to the putty surface side.

The first polishing tool 49 used in the method for repairing the painted surface of the vehicle of this embodiment can be used not only for grinding the putty but also for taking a feather edge before filling the putty. .

As described above, since the first polishing tool 49 used in the putty grinding step can perform the polishing while collecting the dust generated when polishing the putty, the work can be performed efficiently. Like

Although the putty filling step is finished at this point, if a sufficiently smooth surface does not appear after the above-mentioned one putty filling step, the second putty is put on the putty filled first time. Putty filling can be performed as described above.

Step of forming primer surfacer layer As shown in FIGS. 1 (vi) to (viii), the primer surfacer layer J is formed on the surface D2 of the putty polished in the putty grinding step described above. At this time, it is preferable that the primer surfacer layer J is also formed around the boundary between the putty and the old coating film. More preferably, the primer surfacer layer J is thickest on the surface D2 of the putty that has been polished and near the boundary between the putty and the old coating film with a constant thickness, and the thickness of the primer surfacer layer J gradually increases as the distance from the boundary increases. It is formed to be thin.

The primer surfacer layer J is spray-coated on the coating surface including at least the putty surface after the above step, from an ultraviolet-polymerizable composition which may contain an ultraviolet-transmissive material and / or an ultraviolet-absorbing material. It can be obtained by uniformly spray-coating a primer surfacer having a viscosity capable of achieving the above, and curing the coating film of the obtained primer surfacer with ultraviolet rays.

Before forming the primer surfacer layer J, it is preferable to wash the putty exposed surface and the surrounding old coating film surface by air blow or the like, and further degrease.

The primer surfacer used in the method for repairing a vehicle coated surface of the present embodiment is an ultraviolet polymerizable composition which may contain an ultraviolet transparent material and / or an ultraviolet absorbing material. This UV-polymerizable composition is a UV-polymerizable composition having a viscosity that enables uniform spray application, and the primer surfacer layer J after curing adheres to a putty or a top-coat paint formed on the primer surfacer layer J. If it has good properties, it can be used without particular limitation.

Such an ultraviolet polymerizable composition contains an ultraviolet polymerizable prepolymer, an ultraviolet polymerizable monomer, an ultraviolet polymerization initiator and a solvent as essential components, and as an optional component, an ultraviolet transparent material, an ultraviolet absorbing material, It contains sensitizers, pigments, fillers, suspending agents, defoamers, surface modifiers, and the like. In the present invention, the primer surfacer is preferably a resin composition for a primer surfacer, which contains an ultraviolet polymerizable prepolymer, an ultraviolet polymerizable monomer, an ultraviolet polymerization initiator, a solvent, and an ultraviolet transparent material, and / or an ultraviolet absorbing material. Used.

Further, specific examples of the UV-polymerizable prepolymer, the UV-polymerizable monomer and the UV-polymerization initiator contained in the resin composition for primer surfacer include those components contained in the resin composition for putty of the present embodiment. Compounds similar to the specific examples of are mentioned.

Further, regarding the compounding ratio of the above-mentioned UV-polymerizable prepolymer, UV-polymerizable monomer and UV-polymerization initiator in the resin composition for primer-surfacer, when these are usually used as raw materials for primer-surfacer of automobiles and the like. The ratio can be the same as the mixing ratio.

Further, specific examples of the ultraviolet ray transmitting material and the ultraviolet ray absorbing material contained in the resin composition for primer surfacer include the same compounds as the specific examples of these components contained in the resin composition for putty. . Further, as the content of the above-mentioned ultraviolet-transparent material and / or ultraviolet-absorbing material in the resin composition for primer surfacer,
Specifically, the content is about 1 to 30% by weight with respect to the total amount of the composition.

In addition, the resin composition for a primer surfacer may be prepared, for example, by adding these essential components in an appropriate amount ratio, and further, if necessary, a sensitizer, a pigment, a filler, a suspending agent,
It is prepared by mixing appropriate amounts of optional components such as an antifoaming agent and a surface modifier. Regarding the blending amount of various components,
It is appropriately selected depending on the types of essential components used and the like.

As the resin composition for the primer surfacer, the UV polymerizable prepolymer, the UV polymerizable monomer, the UV polymerization initiator, the solvent, and the essential components of the UV transparent material and / or the UV absorbing material and each component It is preferable to be composed of a non-reactive resin component.

As the composition of the resin composition for the primer surfacer, specifically, about 10 parts of the UV-polymerizable prepolymer is used.
~ 30% by weight, about 5 to 20% by weight of UV polymerizable monomer, about 2 to 15% by weight of UV polymerization initiator, and about 4 of pigment.
0 to 60% by weight, 65 to 98% by weight of a composition containing about 15 to 30% by weight of a solvent, about 1 to 30% by weight of a UV transparent material and / or an ultraviolet absorbing material, and about a non-reactive resin. A composition in which 1 to 5% by weight of the composition is used as a resin composition raw material for a primer surfacer and 45 to 50 parts by weight of a solvent is added to 100 parts by weight of the composition.
The above-mentioned UV-polymerizable prepolymer, UV-polymerizable monomer, UV-polymerization initiator, pigment, solvent, UV-transmissive material, and / or UV-absorbing material and non-reactive resin may be added separately and mixed. good.

The value indicated as the content of the pigment used in the resin composition for the primer surfacer is in the case where the ultraviolet-transparent material and / or the ultraviolet-absorbing material is the blue-purple to purple organic pigment or inorganic pigment. Is an amount not including these. Further, in addition to the blue-violet to purple organic pigment or inorganic pigment used as the ultraviolet-transparent material and / or the ultraviolet-absorbing material, calcium carbonate, barium sulfate, clay, talc, as the pigment used in the resin composition for the primer surfacer, Powder, white carbon, and extender pigments such as balloons.

The resin composition for the primer surfacer is prepared by mixing the stock solution of the resin composition for the primer surfacer and the solvent at a suitable time, for example, by adding a solvent at the time of spray coating. It is also possible to be composed of a combination.

For example, about 10 to 30% by weight of the above UV-polymerizable prepolymer and about 5 to 2 of the UV-polymerizable monomer.
0 wt%, about 2-15 wt% UV polymerization initiator, about 40-60 wt% pigment, 65-98 wt% composition containing about 15-30 wt% solvent, UV-transparent material, and And / or about 1 to 30% by weight of an ultraviolet absorbing material and about 1 to 5% by weight of a non-reactive resin is used as a resin composition stock solution for a primer surfacer, and a composition stock solution 100 when spray coating is performed. Solvent 45 to 5 parts by weight
It is also possible to add and mix 0 part by weight to prepare the resin composition for a primer surfacer of the present embodiment. still,
The above-mentioned UV-polymerizable prepolymer, UV-polymerizable monomer, UV-polymerization initiator, pigment, solvent, UV-transmissive material, and / or UV-absorbing material, and non-reactive resin may be added separately and mixed. .

As the above-mentioned solvent contained in the resin composition for primer surfacer, a solvent usually used for UV-polymerizable compositions can be used without particular limitation. Water and organic solvents are included in such solvents. Specific examples of the organic solvent include hydrocarbons such as gasoline, kerosene, normal hexane, toluene, xylene, and turpentine, acetone,
Examples include ketones such as methyl isobutyl ketone, methyl ethyl ketone, and cyclohexanone. Further, examples thereof include alcohols such as cyclohexanol, butyl alcohol, isopropyl alcohol, ethyl alcohol and methyl alcohol, halogenated hydrocarbons such as methylene chloride and trichloroethylene, and esters such as ethyl acetate, isobutyl acetate and butyl acetate.

Since the resin composition for the primer surfacer contains an ultraviolet-transparent material and / or an ultraviolet-absorbing material, the energy of ultraviolet irradiation is higher than that of a conventional ultraviolet-curable resin composition which does not contain these materials. Can be used efficiently. That is, it is possible to cure with a small amount of ultraviolet irradiation, thereby shortening the curing time and improving the work efficiency in repairing the painted surface of the vehicle.

In addition, the resin composition for the primer surfacer is used as an ultraviolet-transparent material or an ultraviolet-absorbing material.
When the pigment is contained, the primer surfacer is colored when the coated surface of the vehicle is repaired using the pigment, so that the progress of the work can be visually confirmed and the workability is improved. Before performing the spray coating, the periphery of the portion to be spray-coated is masked if necessary. Masking can be performed by a method similar to the method usually used for spray coating when repairing the coated surface of a vehicle such as an automobile.

Further, in the method for repairing a vehicle coated surface in the present embodiment, the method of spray-coating the primer surfacer is not particularly limited as long as it can uniformly spray the primer surfacer on the coated surface, but preferably, (1) While spraying the primer surfacer continuously, move the spraying device within the range to be applied, spray-apply the primer surfacer multiple times at the same location, and (2) Force dry from the spray-applied primer surfacer. To remove the solvent.
By repeating these operations (1) and (2) alternately a plurality of times, the primer surfacer can be sprayed on the painted surface of the vehicle.

A spray gun (coating device) can be preferably used as a device for applying the primer surfacer. Since this spray gun can be suitably used when applying a coating material in the top coating step, a detailed description of the spray gun will be given in the top coating step.

By the way, the spray amount in the above spray coating method is, specifically, 140 to 220 ml / m 2.
The spray amount may be about in, preferably about 140 to 180 ml / min.

In addition, the moving speed of the spray gun in the above spray coating method is, specifically, 75 to 90 c.
The speed is about m / sec, preferably about 80 to 85 cm / sec.

Further, the distance from the spray port of the spray gun to the coating surface is, specifically, about 10 to 20 cm, preferably about 10 to 15 cm.

Specific examples of the spray gun used in the above-mentioned spray coating method include a spray gun and the like. Moreover, the diameter of the spray port in these spray guns is preferably about 0.8 to 1.5 mm, more preferably about 1.2 to 1.3 mm.

Further, in the above spray coating method, the film thickness of the primer surfacer coating film obtained by performing (1) spray coating once and (2) forced drying of the solvent has a thickness of 20 to 5
It is preferably about 0 μm.

Further, in order to adjust the film thickness of the primer surfacer coating film to the above range, the spray coating may be carried out under the spray coating conditions such that the number of sprays at the same location is about 3 to 8 times. The film thickness before drying of the coating film thus spray-coated is about 1.1 times the film pressure after drying.
~ 1.2 times. Although (2) forced drying of the solvent also depends on the thickness of the film, if (1) the film thickness after spray coating is in the above range, the solvent can be removed by drying for about 20 to 60 seconds with an air dryer or the like. Well done.

Further, in the above spray coating method,
With (1) spray coating and (2) forced drying of the solvent as a set, how many times this is performed depends on the thickness of the primer surfacer layer J to be finally obtained. Here, the thickness of the primer surfacer layer J in the present embodiment is 40 to
It is practically about 120 μm, and 60 to 80
More preferably, it is about μm. In order to keep the thickness of the primer surfacer layer J in such a range, it is preferable to perform the above-mentioned (1) and (2) about 2-3 times.

Furthermore, although the set of (1) and (2) can be repeated in exactly the same manner, it is also possible to adjust the film thickness of spray coating and the drying time at each time. In addition, there is a method in which the film thickness of the first spray coating is set to about 40 to 55% of the film pressure of the spray coating of the second and subsequent times so that the same film thickness is obtained in the second and subsequent times.

For example, when the coating and drying are repeated twice for the purpose of making the thickness of the primer surfacer layer J 60 to 80 μm, the spray amount is 140 ml / min and the spray gun moving speed is 85 cm / sec. And, the first spray application, the number of times of spraying to the same place is 3/4
The coating is repeated 3 to 4 times by pattern coating or the like, and then the solvent is removed for about 20 to 30 seconds by the above-described first drying device 100 to form a coating film of 20 to 30 μm. In addition, for the second spray application, the number of sprays to the same location can be 7 to 8 by applying 7/8 pattern coating and the like.
And the subsequent drying is performed by the first drying device 100 at 45 to 6 times.
The operation may be carried out in such a manner that a coating film having a thickness of 40 to 50 μm is formed on the coating film for the first time with about 0 seconds.

After the spraying of the primer surfacer is finished, the primer surfacer coated portion is irradiated with ultraviolet rays by the ultraviolet ray irradiation device 4 of the first drying device 100 to cure the primer surfacer which is an ultraviolet ray polymerizable composition.

Then, when the primer surfacer is cured, the primer surfacer layer J is formed. afterwards,
The primer surfacer layer J is polished with polishing paper or the like. The normal primer surfacer layer J forming step is completed by this, but after the above-mentioned one-time primer surfacer layer J forming step, if strain or the like remains, the primer surfacer layer J already formed may be further formed. Another primer surfacer layer J can be formed by a method similar to the above.

After the primer surfacer layer J is completely formed, the surface thereof is polished. In order to polish the surface of the primer surfacer layer J, a polishing tool is attached to a driving device (vibrating machine, vibrator) such as a straight sander or an orbital sander to carry out polishing. The straight sander is a kind of vibrator that uses electric power, compressed air, or the like as a power source, and the vibration direction of its movable portion makes a simple reciprocating motion in a plane parallel to the surface to be polished. Therefore, the polishing tool attached to the straight sander polishes while performing a simple reciprocating motion with respect to the surface to be polished.

The orbital sander, like the straight sander, is a kind of vibrator that uses electric power, compressed air or the like as a power source, and its movable portion 55 vibrates in a circular motion in a plane parallel to the surface to be polished. I do. Therefore, the polishing tool supported by the orbital sander polishes the surface to be polished while making a circular motion. Incidentally, these mechanical polishing devices include not only a device for simply polishing a surface to be polished but also a dust absorbing type for polishing while catching dust generated during polishing by a dust inlet provided at a predetermined location.

A detailed description will be given below of the second polishing tool which is attached to the driving device as described above and polishes the surface of the applied primer surfacer layer J.

As shown in FIGS. 20 to 25, the second polishing tool used for polishing the surface of the primer surfacer layer J is a substrate portion for holding an abrasive on the surface facing the surface of the primer surfacer layer J. 51, a holding plate 52 provided in parallel with the substrate portion 51 at a predetermined interval, and an elastic member 53 interposed between the substrate portion 51 and the holding plate 52.
The substrate portion 51 includes a first polishing member 54 fixed to the holding plate 52 with a predetermined gap, and the first polishing member 5
The second polishing member 55 is connected to the edge portion of No. 4 and rotates about the connection line with the first polishing member 54 as an axis.

Further, the second polishing member 55 is rotatably provided within a preset movable range in the direction of approaching the holding plate 52 from the position flush with the first polishing member 54.

The holding plate 52 is manufactured by cutting an aluminum plate, a polycarbonate plate or the like into a rectangular plate shape as shown in FIG. The first polishing member 54 has a plurality of bolt insertion holes 57 into which the mounting bolts 69 shown in FIG. 25 for fixing the holding plate 52 are inserted, and a dust suction port (not shown) provided at a predetermined position of the holding plate 52. No.) is provided.

Below the holding plate 52, the first polishing member 54 and the second polishing member 5 are interposed with the elastic member 53 interposed therebetween.
A substrate portion 51 composed of 5 is provided. The elastic member 53 and the substrate portion 51, and the elastic member 53 and the holding plate 52 are adhered by an adhesive material.

The substrate portion 51 is a thin resin plate 54, 55 cut into a rectangle having a short side slightly longer than the short side of the holding plate 52, and the lower surface of the resin plate is adhered and polished. The adhesive sheet 61 holds the paper in a detachable manner.
An imaginary line L shown in FIG. 23 shows the outer shape of the holding plate 52.

Then, as shown in FIGS. 23 and 24, the positions at which the holding plate 52 is inwardly about 1/4 from both corners R on the short side are defined as the base end T, and the resin is introduced from the base end T. Two L-shaped cutting grooves 62 extending straight in the longitudinal direction of the plate,
62 is provided.

The V-shaped cutting grooves 62, 62 form a portion where the strength is locally reduced in the resin plate. That is,
A thin flange is formed on the resin plate. here,
The thin-walled flange is a form of a rotating unit that forms a thin-walled portion on a line on an arbitrary member and rotatably configures a part of the arbitrary member around the thin-walled portion as an axis.

As described above, in the present embodiment, the thin portion is provided on the substrate portion 51 by the V-shaped cutting grooves 62, 62.
A part of the substrate portion 51 is configured to rotate with the book cutting grooves 62, 62 as a boundary. In this embodiment, the inside of the two cutting grooves 62, 62 is the first polishing member 54, and the outside is the second polishing member 55.

In the above-mentioned second polishing tool 80, the first polishing member 54 and the second polishing member 55 are provided on the substrate portion 51 serving as the polishing surface, and part of the substrate portion 51 serving as the polishing surface is movable. I have to. The first polishing member 54 and the second polishing member 55 are not only connected via a thin flange, but are also connected via the adhesive sheet 61 with the first polishing member 54 and the second polishing member 55 being completely separate members. You may. Further, the first polishing member 54 and the second polishing member 55 may be connected by a leaf spring or the like so as to be movable.

Further, the first polishing member 54 is provided with a plurality of holes in the center thereof and at predetermined intervals in the longitudinal direction. Further, a plurality of holes are provided at predetermined intervals also on the cutting grooves 62, 62 serving as a boundary between the first polishing member 54 and the second polishing member 55. The holes provided in the first polishing member 54 and the second polishing member 55 serve as dust collecting holes 63 for capturing dust generated between the substrate portion 51 and the surface to be polished when polishing the surface to be polished. .

Further, the dust collecting holes 63 provided on the cutting grooves 62, 62 are bolt insertion holes 57 provided on the holding plate 52.
Are arranged at substantially the same position as. Therefore, when the holding plate 52 is attached to the second polishing tool 80, the cutting grooves 62, 6
The mounting bolt 69 is inserted from the dust collecting hole 63 provided on the upper surface of the second holding bolt 52, and the holding plate 52 and the second polishing tool 80 are tightened with the mounting bolt 69 at the bolt insertion hole 57 of the holding plate 52 desired in the dust collecting hole 63. The second polishing tool 80 is attached to the movable part of the second polishing tool 80. Thus, in this embodiment, the structure is such that it can be easily attached to and detached from the existing polishing tool.

Next, the elastic member 53 which is interposed between the substrate portion 51 having the first polishing member 54 and the second polishing member 55 and the holding plate 52 to support the substrate portion 51 on the holding plate 52 will be described. To do. As shown in FIG. 25, the elastic member 53 includes a first support member 64 that supports the peripheral edge of the first polishing member 54 shown in FIGS. 23 and 24, and a second support member that supports the vicinity of the center of the first polishing member 54. 65 and an elastic member 53 that supports each second polishing member 55.

The first support member 64 is made of a hard sponge having the same size as the first polishing member 54 and a thickness of about 6 mm, and the inside thereof has a removed portion 67 that is removed by punching. Has been. Then, the first support member 64 is fixed by an adhesive along the peripheral edge of the resin plate forming the first polishing member 54. The size of the removed portion 67 is such that the first polishing member 54 and the second polishing member 5 are inward.
The plurality of dust collecting holes 63 provided in the No. 5 have a desired size.

Further, regarding the dust collecting hole 63 provided on the boundary between the first polishing member 54 and the second polishing member 55, that is, across the cutting groove 62, a part of the first supporting member 64 is subjected to the second polishing. The bypass portion 68 is projected to the member 55 side so that the first support member 64 bypasses the dust collecting hole 63.
This is dealt with by providing. Therefore, the dust collecting holes 63 provided on the boundary between the first polishing member 54 and the second polishing member 55 are similar to the dust collecting holes 63 provided in a line near the center of the first polishing member 54. In addition, an opening is formed inside the extracted portion 67.

Further, at this time, the holding plate 52 shown in FIG.
Similarly to the dust collecting port 13 on the side of the substrate portion 51, the dust collecting port 58 provided in the opening of the first supporting member 64 is opened inward of the withdrawal portion 67 of the first supporting member 64. 51 dust collecting hole 63
-> Extraction part 67-> A dust collecting passage communicating with the dust collecting port 58 of the holding plate 52 is formed.

The dust collecting port 58 of the holding plate 52 is a dust collecting port (not shown) provided at a predetermined position of the second polishing tool 80.
The dust generated during polishing passes through the dust collecting passage and is guided to the dust suction port of the second polishing tool 80 to be captured. The dust suction port provided in the second polishing tool 80 is connected to a vacuum device or the like that uses a negative pressure source as an intake source.

The second supporting member 65 is made of a hard sponge formed in a rectangular shape having a thickness of 6 mm, and is arranged inward of the removed portion 67 of the first supporting member 64 and near the center of the first polishing member 54. And supports the vicinity of the center of the first polishing member 54. The second support portion is sufficiently smaller than the extraction portion 67 of the first support member 64, and is arranged without blocking the dust collection hole 63 and the dust collection port 58 that are open to the removal portion 67.

The first support member 64 and the second support member 65 are made of elastic hard sponge, but have a large support area for the first polishing member 54.
The first polishing member 54 is fixedly supported by the holding plate 52.

Further, the elastic member 53 comprises a plurality of hard sponges formed in a cylindrical shape having a height of 6 mm and a diameter of about 5 mm, and a coil spring 70 provided on the outer circumference of each hard sponge. A plurality of hard sponges and coil springs 70 are provided in the center of the second polishing member 55 and in the longitudinal direction thereof at a predetermined interval. Then, the second polishing member 55 is positioned with respect to the holding plate 52.

The third support portion 16 is the first support member 64.
Also, the cross-sectional area is sufficiently smaller than that of the second support member 65, and it can be easily bent by fingers. Therefore, the elastic member 53
Fixes the second polishing member 55 to the holding plate 52 so that it can be easily moved. That is, due to the flexibility of the elastic member 53, the second polishing members 55, 5 are fixed to the holding plate 52, and the first polishing member 54 is rotatably provided with the cutting groove 62 as a rotation axis.

With these structures, when an external force (pressing force) acts on the second polishing member 55, the second polishing member 55 rotates in a direction approaching the holding plate 52, and the second polishing member 5
When the external force (pressing force) applied to the second polishing member 5 is removed
The lower surface of 5 returns in a direction flush with the lower surface of the first polishing member 54. When the external force is continuously applied to the second polishing member 55, a part of the second polishing member 55 comes into contact with the side wall portion 9 provided on the long side of the holding plate 52 and the movable range thereof is limited. To be done.

The movable range of the second polishing member 55 can be easily changed by changing the height and angle of the side wall 9 of the holding plate 52. It can also be changed by changing the thickness of the hard sponge that forms the elastic member 53. When setting the movable range, the movable range is set so that a good polishing surface can be easily obtained when the second polishing tool 80 is operated within the arbitrarily set movable range.

Next, with reference to FIGS. 26 and 27, a method of mounting the second polishing tool 80 having these configurations on the drive unit for use and a polishing process will be described.

First, as shown in FIG. 26, the second polishing tool 80 is operated so that only the second polishing member 55 comes into contact with the surface of the primer surfacer layer applied to the surface of the polished putty. That is, linear polishing is performed only by the second polishing member 55. Here, since the second polishing member 55 has a certain width, a stable operation feeling can be obtained even though it is a linear polishing operation using the edge portion 56 which has been performed by the conventional method. Further, it is possible to suppress local excessive wear of the polishing paper located at the edge portion of the substrate portion 51.

Since the second polishing member 55 is made of a thin resin plate (thickness of about 1 to 2 mm), the second polishing member 55 is in a direction perpendicular to its longitudinal direction, that is, above and below the substrate portion 51. It has flexibility. Therefore, the second polishing member 55 bends along the fine undulations of the coating surface Q, and the second polishing member 55 contacts the coating surface Q evenly. Along with this, the details of the coated surface Q can be polished. Further, a more stable operation feeling of the second polishing tool 80 can be obtained, and linear polishing can be efficiently performed.

Then, after the linear polishing by the second polishing member 55, the first polishing member 54 as shown in FIG.
Also, the second polishing tool 80 is operated so that the double-sided plate portion of the second polishing member 55 comes into contact with the coating surface Q, and planar polishing is performed.

In this way, the first polishing member 5 which becomes the polishing surface
By properly using 4 and the second polishing member 55, a good flat surface can be easily obtained in a short time.

As a method of operating the second polishing tool 80 in the linear polishing and the planar polishing, it is preferable to use a cross hand. Also, the types of abrasive paper are number 80-1
It is advisable to replace the polishing paper of No. 80 with a number of steps so as to increase the number according to the situation and polish.

The second polishing tool 80 has been described as being used when polishing the coated surface coated with the primer surfacer. However, before applying the primer surfacer, a slightly rough polishing paper is used to fill the putty. It can also be suitably used when grinding a surface. By grinding the putty-filled surface in this way, the adhesion of the primer surfacer can be increased.

As described above, in the primer surfacer layer forming step, since the second polishing tool 80 can perform planar polishing and linear polishing, the polished surface can be more precisely polished. .

Further, since the second polishing tool 80 also has a dust collecting function, it is possible to proceed with the polishing work without scattering the dust and to shorten the time for collecting the dust later.

When the primer surfacer layer forming step is completed, a pigment is applied to the polished application surface Q, the pigment is dried, and the surface is abraded.

Topcoating Step The topcoating step will be described in detail below. It should be noted that there is a step of cleaning the surface of the primer surfacer layer J and the surface of the old coating film around the primer surfacer J by air blow or the like and further degreasing before performing the overcoating, but the description thereof will be omitted.

The overcoating in the method for repairing the painted surface of the vehicle of the present embodiment can be performed in the same manner as the method for overpainting that is usually carried out in repairing the painted surface of a vehicle or the like. For example, a suitable coating method is selected from solid coating, metallic coating, 3 coat mica coating, etc. according to the old coating film, and the coating is performed. Here, a spray gun (coating device) is preferably used for the top coating.

The spray gun will be described in detail below. First, the structure of the spray gun in this embodiment will be described. FIG. 28 is a sectional view showing the entire spray gun 301. The spray gun 301 in the present invention is a device that mixes compressed air and paint, atomizes the paint with compressed air, and applies it to the surface to be painted.

The spray gun 301 according to this embodiment has a compressed air supply passage 30 for supplying compressed air.
2, and a spray gun body 304 provided with a paint supply passage 303 for supplying paint, and the spray gun body 3
04, a paint injection nozzle 305 having a spray port 308 for spraying paint, and a needle valve 306 for opening / closing the spray port 308 and adjusting the spray amount of the paint.

Further details will be described. A spray gun 301 formed in the shape of a small pistol is formed on a grip portion 307 that grips the spray gun 301 and a barrel portion 321 that is provided continuously to the grip portion 307 and that has a spray port 308 that sprays paint and compressed air. Has been done.

Further, inside the spray gun body 304,
A compressed air supply passage 302 through which compressed air passes from the lower portion of the grip portion 307 to the injection port 308 is provided.

An air nipple 309 connected to the source of compressed air is provided below the grip portion 307. Furthermore, the grip 30 from the air nipple 309.
7, a compressed air supply passage 302 is provided upward, and in the vicinity of the boundary between the grip portion 307 and the barrel portion 321,
The compressed air supply passage 30 is positioned substantially perpendicular to the grip portion 307.
A rod-shaped air valve 310 that opens and closes 2 is provided.

The air valve 310 has a coil spring 311 at its base end and is biased in the direction of closing the compressed air supply passage 302.

Further, an air packing 312 for surely opening and closing the compressed air supply passage 302 is provided near the center of the air valve 310. This air packing 31
If an elastic member such as resin is used for the second member, it is possible to reliably prevent the compressed air from entering and exiting when the air valve 310 closes the compressed air supply passage 302.

Above the air valve 310, a needle valve 306 for adjusting the injection of paint and the paint injection nozzle 3 are provided.
05 is arranged.

This needle valve 306 has a tapered tip portion 314 at one end on the injection port 308 side, and a coil spring through a needle valve guide 315 which regulates the movement of the needle valve 306 at the other end. 316. The coil spring 316 is biased in the direction of closing the injection port 308. Further, a needle packing 317 for sealing the paint leakage is pressed by an end of the coil spring 316 by a packing adjusting screw 318. The packing adjusting screw 318 is tightened and screwed to an appropriate strength in order to prevent paint leakage and to operate the needle valve 306 smoothly.

In the vicinity of the center of the needle valve 306,
A paint container 320 attached to a paint joint 319 connected to a paint supplier is located.

Further, the ends of the needle valve guide 315 and the air valve 310 on the injection port 308 side are provided with the barrel 321.
Has a center of rotation 330 and is in contact with a trigger portion 322 provided substantially parallel to the grip portion 307. Therefore, when the trigger portion 322 is pulled toward the grip portion 307 side, the air valve 3
The coil spring 311 provided in the needle valve 30 and the needle valve 30.
6 and the coil spring 316 provided in 6 are compressed.

When the coil spring 311 provided in the air valve 310 is compressed, the air packing 312 provided in the air valve 310 moves to the coil spring 311 side, so that the compressed air supply passage 302 is opened. Then, the compressed air is supplied to the injection port 308 according to the compressed air supply passage 302 provided in the barrel portion 321.

When the coil spring 316 provided at the end of the needle valve 306 is compressed, the needle valve 306 is slid and inserted into the cylindrical needle valve guide 315.

Then, the needle valve 306 that has closed the injection port 308 withdraws into the injection port 308, so that the injection port 308 is opened and the paint is ejected.

Compared to the needle valve 306, the air valve 31
Since 0 is designed to move a few mm earlier and inject compressed air, compressed air is sent slightly ahead of paint injection.

Next, the tip structure of the spray gun 301 of this embodiment will be described in detail. FIG. 29 shows an enlarged cross-sectional view of the tip of the spray gun 301 of this embodiment.
FIG. 30 shows an enlarged cross-sectional view of the paint injection nozzle 305 in the spray gun 301 of this embodiment, and FIG. 31 shows the needle valve 30 in the spray gun 301 of this embodiment.
6 shows an enlarged view of the tip end of FIG. 6, and FIG. 32 shows a partially enlarged sectional view of the tip end portion 314 in a state where the needle valve 306 is attached to the paint injection nozzle 305 in the spray gun 301 of this embodiment. Note that, for convenience of description, the same reference numerals are given to the components described in FIG.

First, the tip structure of the spray gun 301 according to the present invention will be described with reference to FIG. In the spray gun 301 of this embodiment, an air cap 323 is screwed into the injection port 308. This air cap 323
A plurality of slits 325 are provided in the periphery of the through hole 324 provided at the center. This through hole 32
Paint is mainly ejected from No. 4, and compressed air is ejected from slits 325 provided in the periphery.

Then, the paint is diffused by the jetted compressed air. Thus, atomizing the liquid by atomizing the liquid is called atomization.

The paint injection nozzle 305 is located inside the through hole 324. As shown in FIG. 30, the paint injection nozzle 305 has a first taper portion 326 formed to have a smaller diameter from the injection port 308 toward the interior of the paint injection nozzle 305, and further extends from the first taper portion 326 toward the inside. The second taper portion 327 has a larger diameter according to the above, and the third taper portion 331 has a larger diameter toward the inside from the second taper portion 327.

Further, a rod-shaped valve called a needle valve 306 as shown in FIG. 31 is inserted inside the paint injection nozzle 305. The needle valve 306 includes a tapered distal end portion 314, a first linear portion 328 continuous with the distal end portion 314, and a second linear portion 332 continuous with the first linear portion 328. The first linear portion 328 has a taper angle corresponding to the second taper portion 327, and the paint injection nozzle 305 from the injection port 308.
The taper portion 328 is formed so as to have a larger diameter as it goes to.

The second linear portion 332 has a taper angle corresponding to the third taper portion 331, and the first linear portion 32
As in No. 8, the diameter is increased from the injection port 308 toward the paint injection nozzle 305.

Further, the tip portion 314 according to the present embodiment.
Is conical and forms the tip 314.
The length r of the busbar is 0.5 mm, and the tip angle α is 80 to
It is good to set it to 85 degrees. In particular, when the tip angle α is set to 83 degrees, the sprayed state of the paint is significantly improved.

The taper angle β of this taper portion 328 is 2
A good effect is exhibited between 4 degrees, but the most suitable effect is obtained when β = 3 degrees.

In addition, the taper ratio of the taper portion 328 is
It is preferable to set it to 0.30 to 0.35. This taper ratio is a value obtained by dividing the difference between the length 1 of the taper portion 328 of the needle valve 306, the diameter a on the large diameter side of the taper portion 328, and the diameter b on the small diameter side by the taper length l. .

Further, as shown in FIGS. 28, 33, 34, and 35, the needle valve 306 according to the present embodiment.
Are configured by combining a first coil spring 316a and a second coil spring 316b having different spring coefficients.

The first coil spring 316a in this embodiment has a lower spring coefficient than the second coil spring 316b. The first coil spring 316a may be a coil spring having a spring coefficient higher than that of the second coil spring 316b, or, of course, the reverse.

The first coil spring 316a is in contact with the needle valve guide 315, and the second coil spring 3
One end of 16b is connected to the first coil spring 316a, and the other end is in contact with the inner wall of the guide chamber 329.

Therefore, as shown in FIG. 34, when the trigger portion 322 is pulled by the force A, the first coil spring 316 is pulled.
A is compressed by force A by the sliding needle valve guide 315.

Along with this, the force A is also transmitted to the second coil spring 316b which is in contact with the inner wall of the guide chamber 329. Then, this force A is transmitted to the inner wall of the guide chamber 329, and the reaction force B thereof compresses the second coil spring 316b.

With this structure, the coil spring 316 of the present invention has the first step of compressing the first coil spring 316a by pulling the trigger portion 322 and the second coil spring 316b by pulling the trigger portion 322. The second stage,
It is possible to go through three operating stages, a third stage in which both the first coil spring 316a and the second coil spring 316b are completely compressed.

Therefore, when only the first coil spring 316a is compressed, only compressed air is injected, and when the second coil spring 316b is partially compressed in addition to the first coil spring 316a, the amount of compressed air and the amount of paint are reduced. The amount of the compressed air and the amount of the paint can be maximized by injecting the first coil spring 316a and the second coil spring 316b to the end to inject them. It will be possible.

The state in which the first coil spring 316a and the second coil spring 316b are simultaneously compressed can be referred to as a half-clutch state, and the presence of this state blurs the boundary between the painted surface and the old painted surface. It will be easier to paint.

Further, when the trigger portion 322 is pulled, the needle valve 306 slides into the needle valve guide 315 accordingly, and the injection port 308 of the paint injection nozzle 305 is opened.

More specifically, by operating the trigger portion 322, the first coil spring 316a is compressed substantially at the same time when the air valve 310 is opened and compressed air is injected as described above. Then the needle valve 306
Slides into the paint injection nozzle 305.

Then, the state in which the taper portion 328 of the needle valve 306 and the taper portion 327 of the paint injection nozzle 305 have been properly fitted to each other until now is shifted, and a slight gap is present between the both tapers. Clearance occurs. At this time, the tip end portion 314 of the taper portion 328 of the needle valve 306 has the first taper portion 3 of the paint injection nozzle 305.
Located within 26.

When the needle valve 306 and the first coil spring 316a are in the above-mentioned state, only the compressed air is jetted from the jet port 308.

When the trigger portion 322 is further operated and the second coil spring 316b also begins to be compressed, the needle valve 3
06 slides further into the needle valve guide 315 inside the paint injection nozzle 305. Then, the clearance between the tapered portion 328 and the second tapered portion 327 becomes wider. In this state, an appropriate amount of paint and compressed air are jetted from the jet port 308.

In addition, when the first coil spring 316a and the second coil spring 316b are completely compressed,
The tip 314 of the needle is completely covered by the paint injection nozzle 30.
5 is housed inside.

At this time, the compressed air and the paint are both ejected from the ejection port 308 in the maximum amount.

Next, the principle of injection of the spray gun 301 in this embodiment described above will be explained together with the operation description.

First, when coating is performed using the spray gun 301 of this embodiment, the injection port 308
Hold the grip portion 307, and hold it facing the surface to be coated. At this time, the injection port 308 is located at the boundary between the old painted surface and the painted surface.

When the trigger portion 322 is pulled toward the grip portion 307, the needle valve guide 315 comes into contact with the trigger portion 322 as shown in FIG. And in FIG.
The needle valve guide 315, as shown in FIG.
The needle valve 306 slides when it comes into contact with the needle 2 and is inserted into the needle valve guide 315. That is, the needle valve 306 that has closed the injection port 308 retracts inside the barrel portion 321. Along with this, the closed injection port 308 is opened.

In addition, the paint in the paint container 320 is sprayed on the spray port 3
Ejected from 08. At this time, as described above, since the compressed air is jetted slightly earlier, the paint is atomized with a sufficient amount of compressed air from the beginning.

Moreover, as shown in FIG. 32, in the paint injection nozzle 305 and the needle valve 306 of this embodiment, the taper angles of the second taper portion 327 of the paint injection nozzle 305 and the taper portion 328 of the needle valve 306 are the same. Since they are substantially the same, even if the needle valve 306 is retracted inside the paint injection nozzle 305, the second taper portion 327 and the taper portion 328 are formed.
The gap between and becomes almost constant.

Therefore, although the compressed air supplied from the slit 325 provided in the air cap 323 is small in quantity at the beginning, the paint corresponding to the flow rate of the compressed air can be ejected. Then, unlike in the conventional case, there is no fear that the paint is not completely atomized immediately after being sprayed and is sprayed as large particles.

Further, the inventors of the present embodiment conducted an experiment to support the above-mentioned effects. The contents of this experiment and the results of the experiment will be described below.

In order to compare the test results of the spray gun 301 of this embodiment and the conventional spray gun, a W-88 needle valve 360 manufactured by Anest Iwata shown in FIG. 40 was attached as a conventional spray gun. A spray gun was used. For the sample used in this experiment, a general paint prepared by mixing a curing agent and a pigment and diluting the mixture with thinner is used.

This experiment is an experiment for measuring the film thickness of the coating material applied to the coated surface. First, as shown in FIG. 36, half of the coated surface is divided into meshes of 3 rows and 12 columns. Then, indicate the position of each mesh on the painted surface 1
Numbers ~ 12. The width of one row of mesh is 4 cm
And

Next, the air pressure for sending the compressed air is 0.8 kg.
/ Cm ² and the distance from the coating surface to the spray gun 301 is 15 cm, and the paint is sprayed. At this time, the injection port 308 is always operated at a right angle to the painted surface. In this experiment, it is assumed that the second row (b) of the meshes divided into the three rows a, b, and c is injected.

Then, the results of measuring the film thickness of the coating material applied to the coated surface are shown in FIGS. Note that FIG. 37 is a graph showing changes in film pressure when spraying with a conventional spray gun, and FIG. 38 shows film pressure when spraying with the spray gun 301 in the present embodiment. FIG. 39 is a graph showing changes, and FIG. 39 shows a conventional spray gun (not shown).
3 is a graph comparing the film thickness when coated with the spray gun 301 of this embodiment with the film thickness when coated with.

In the graphs shown in FIGS. 37 to 39, the vertical axis represents the thickness of the coating film (μm) and the horizontal axis represents the mesh number (coating injection position). The solid line shows the measurement result of the spray gun 301 of the present embodiment, and the broken line shows the measurement result of the conventional spray gun.

From this graph, both spray guns
As a whole, the membrane pressure tends to gradually increase.

However, the spray gun 301 in this embodiment has the mesh 1, mesh 2, mesh 3 ...
・ As the coating position progresses, the film pressure gradually increases.

On the other hand, in the conventional spray gun, the membrane pressure is about 2 μm in the mesh 1 and the mesh 2, but almost no membrane pressure is formed in the mesh 3 (0 μm).
The film thickness of the mesh 4 is about 6 μm.

That is, in the conventional spray gun, a large amount of paint is sprayed immediately after spraying the paint, and thereafter the paint is not sprayed temporarily. When the injection is further continued, the injection amount increases again.

This is caused by the difference in the injection amount of the paint and the compressed air, and the cause is the shape of the needle valve for adjusting the injection amount of the paint.

The needle valve 360 used in the conventional spray gun has only a tapered tip, and the linear portion 390 continuous from the tip has the same diameter up to the base end of the needle valve 360. .

Therefore, as shown in FIG. 41, when the needle valve 360 slides inside the paint injection nozzle 350, the second taper portion 340 and the linear portion 390 which are formed to have a larger diameter toward the inside of the paint injection nozzle 350 are formed. The gap between the two rapidly increases. The injection port 380 of the paint injection nozzle 350 is suddenly opened. Then, an amount of paint that does not match the amount of compressed air is sprayed. Then, the paint is not sufficiently atomized and is applied to the painted surface. As a result, the coating film immediately after jetting becomes thick.

On the other hand, the spray gun 3 in this embodiment.
The needle valve 306 used for No. 01 has a taper portion 32 whose diameter increases toward the inside of the paint injection nozzle 305 in the first linear portion 328 as well as the second taper portion 327.
8 is formed.

Then, the second taper portion 327 and the taper portion 3
The gap with 28 gradually opens. This means that the paint is gradually fed into the gap.

Therefore, the spray gun 30 of the present embodiment.
In No. 1, even if the flow rate of the compressed air is small immediately after pulling the trigger portion 322, the spray amount of the paint is adjusted by the gap between the second taper portion 327 and the taper portion 328, so that the paint is sufficiently atomized. To be done.

Along with this, the spray gun 301 of this embodiment can prevent the coating film from being formed to a thickness even immediately after the coating material is sprayed.

Due to these facts, according to the spray gun 301 of the present embodiment, the paint is always completely atomized because the stroke of the taper portion is long, and it is possible to spray a fine mist-like paint.

Also, the spray gun 301 of this embodiment is
Since the stroke portion is tapered, the paint can be sprayed gradually. Therefore, it becomes extremely easy to carry out blurring painting by blurring the boundary between the old painting surface and the painting surface.

Topcoating is performed using the spray gun 301 described above. And when the painting is finished, three times,
The coated surface is dried by the first drying device shown in FIGS. Here, when the coating material is an ultraviolet polymerizable composition,
Irradiate the coating surface with ultraviolet rays by the ultraviolet ray irradiation device 4,
Dry and cure.

When the coating material is thermosetting, the infrared ray irradiation device 5 irradiates the coating material surface with infrared rays, and at the same time, the blower 7 blows warm air to dry and cure the coating material.

Further, after the coated surface is completely dried and cured, a pigment-free coating material (clear) is sprayed onto the coated surface to be dried and cured.

After the clear coated surface is completely hardened, the coated surface is polished with an abrasive containing particles called a compound. This polishing is called polishing. Here, a detailed description will be given of the third polishing tool (hereinafter referred to as a polisher) used in polishing.

As shown in FIG. 42, the polisher 91 used in the present embodiment is rotatably driven by the driving device 219 as described above, and has a base member 96 having a mounting surface 94 orthogonal to its rotation axis. It has an elastic member 98 attached to the base member 96 and a polishing member 211 attached to the elastic member 98. The elastic member 98 has a groove 99 that opens toward the polishing member 211 and extends in the peripheral direction from the center of the elastic member 98, and the opening edge 210 of the groove 99 extends from the center of the elastic member 98 toward the peripheral edge. It is assumed to be a straight line.

As shown in FIGS. 43 and 44, the base member 96 is composed of a threaded portion 92 and a mounting surface 94 provided orthogonal to the threaded portion 92 with the center of the threaded portion 92 as the rotating shaft 93. .

The mounting surface 94 has a disk shape, and a convex portion 95 whose center extends toward the screw portion 92 side and the convex portion 9 thereof.
5 and a peripheral edge portion 97 having the same diameter as the center and having a diameter larger than the radius of the convex portion 95. This peripheral portion 9
7 is much thinner than the convex portion 95.

As shown in FIGS. 45 and 46,
The elastic member 98 attached to the attachment surface 94 has a disk shape that is congruent to the attachment surface 94 and has a thickness G of 15 mm to
It is formed to 25 mm.

Further, a groove portion 99 extending from the vicinity of the center thereof in the peripheral direction is provided. The groove 99 in the present embodiment is provided so as to penetrate the elastic member 98, but it is essential condition that the groove 99 is opened in the direction opposite to the mounting surface 94 side (that is, the polishing member 211 side shown in FIG. 42). For example, even the groove portion 99 having a depth of up to half the thickness of the elastic member 98 may have an opening portion on the polishing member 211 side.

Further, the groove 99 has a straight line extending from the vicinity of the center of the elastic member 98 to the peripheral edge thereof in a part of the opening edge 210. Further, the groove portion 99 is formed such that the width of the groove becomes wider from the vicinity of the center of the elastic member 98 toward the peripheral edge. Further, it is more preferable that the groove portions 99 are formed to extend radially from the vicinity of the center of the elastic member 98. still,
As a material for the elastic member 98, a hard elastic material such as hard sponge, hard rubber, or elastic resin may be used.

Further, as shown in FIGS. 47 and 48, the polishing member 211 attached to the opening side of the elastic member 98 is similar to the elastic member 98 with the base member 96 shown in FIGS. 43 and 44. It has a disk shape and a thickness H of 20.
It is formed to be 30 mm to 30 mm. The material is formed of a material having both softness and flexibility such as soft sponge, wool, and cloth material. As the material of the polishing member 211, at least a material softer than the elastic member 98 is preferably used.

These members are attached to each other with an adhesive agent, or as shown in FIG. 51, they are attached with a disk-shaped pad 212 having a magic type processing on one of the front and back surfaces interposed therebetween.

Further, a shock absorbing member 213 (shock absorber) shown in FIGS. 49 and 50 is interposed between the base member 96 and the elastic member 98. Impact absorbing member 213
Is the same as the elastic member 98 and the polishing member 211.
It has a disc shape congruent with 6, and has a thickness I of 3 mm to 6 mm.

Next, a method of using the polisher 91 having the above-mentioned structure and a polishing process will be described. In addition, in the present embodiment, regarding the polisher 91 of the pattern in which the elastic member 98, the polishing member 211, and the shock absorbing member 213 are adhered and fixed to each other, and they are attached to the base member 96 by the pad 212 which is processed by the magic type. I will explain. The elastic member 98 shown in FIGS. 45 and 46 is used, and the polishing member 211 is shown in FIGS.
8 is used, and the shock absorbing member 213 shown in FIG.
9, the one shown in FIG. 50 is used.

Next, a method of operating the polisher 91 will be described. In the present embodiment, the polisher 91 is attached to the drive device and is referred to as the polisher 91.

First, as shown in FIG. 51, the coating surface M at the final stage of the overcoating process (the repair recesses on the steel plate 214 is filled with putty, and the primer 215, the surfacer 216, and the paint 217 are sequentially sprayed onto the coated surface M to form a layer. In such a state, the polisher 91 is operated so that the polishing member 211 to which the compound (abrasive) is attached is brought into contact with the polishing member 211 at a certain angle. The polisher 91 includes a drive device 219 for rotating the polisher 91, and a grip portion 220 for attaching and operating the drive device 219.
It is composed of and.

As shown in FIG. 51, when the polisher 91 rotates to the right, the left hand holds the grip 220, and the right hand holds the top of the drive unit 219 against the rotation of the polisher 91. Then, the polisher 91 is operated so as to be pulled toward you. Note that the torque of the polisher 91 is preferably constant in order to perform a more stable work.

Then, as shown in FIG. 52, the polishing member 2
Numeral 11 is crushed by the force for pressing the polisher 91 against the coated surface M and the reaction force from the coated surface M against the force, so that the thickness is reduced. Accordingly, the polishing member 211
Similarly, the elastic member 98, the shock absorbing member 213, and the pad 212, which are stacked on top of each other, are crushed and the thickness is reduced. Furthermore, since the polishing member 211 is pressed at a certain angle when performing the work, the elastic member 98, the shock absorbing member 213, and the pad 212 as well as the polishing member 211 are pressed.
The deformation of the peripheral portion of the Then, the base member 9
The peripheral edge portion 97 of 6 bends due to the deformation.

As a result, it is possible to sufficiently deal with the fine irregularities on the coated surface M and the complicatedly shaped portion 80 such as the corner portion or the edge portion which has been difficult to polish until now. It will be possible.

As described above, the third polishing tool 91 used in the overcoating step can perform linear polishing and planar polishing in the same manner as the second polishing tool shown in FIG. 20. You will be able to finish more carefully.

<Second Embodiment> In the present embodiment, repairing of a painted surface of a vehicle when a coating material such as putty or primer surfacer used for repairing a damaged portion is a conventional thermosetting material that is hardened by heat The method will be described.
In the present embodiment, the first drying device used in the first embodiment is used as a drying device for drying putty, primer surfacer and the like. Therefore, detailed description of the first drying device is omitted.

The repair procedure of the method for repairing a vehicle painted surface in this embodiment is the same as the repair procedure of the method for repairing a vehicle painted surface of a vehicle painted surface in the first embodiment, and the equipment used is also the same. Therefore, the drawing corresponding to the description is
The same components as those in the first embodiment are used, and the description of the overlapping portions will be omitted.

The vehicle repair method in this embodiment is a method for repairing a damaged portion due to the unevenness of the vehicle coated surface and / or a coating film defect, and heat treatment is applied to the damaged portion pretreated as necessary. A putty made of a thermosetting material that is cured by reacting with the putty is filled, and heat is applied to the putty to cure the putty, and the putty filling step shown in FIGS. Polishing the surface of the putty The step of polishing the putty shown in FIG. 1 (v) and the coating surface M including the polished surface of the putty are uniformly coated with a primer surfacer made of a thermosetting material and having a viscosity enabling spray coating. Spray coating, and the resulting primer surfacer coating film is cured by heat to form a primer surfacer layer J.
i) to (viii), and a primer surfacer layer forming step and an overcoating step shown in FIGS. 1 (ix) and (x) for applying an overcoat on the primer surfacer layer obtained in the step. . Hereinafter, each step of the repair method to will be described in detail in order.

Putty Filling Step In the putty filling step shown in FIGS. 1 (i) to 1 (iv), pretreatment is first performed according to the state of the damaged portion. As a pretreatment, the coating originally applied to the vehicle (hereinafter referred to as "old coating")
It may be said that) degreasing, removal of old coating, feather edge removal, etc.

Degreasing of the old coating film is a pretreatment which is performed in most cases even in the general repair method. Also in the repair method of this embodiment, degreasing is performed regardless of the state of the damaged portion N. Degreasing of the old coating film can be performed by treating a commonly used degreasing agent according to a generally performed procedure.

First, the damaged portion N and its surroundings are cleaned. Then, it is thoroughly dried. After that, the oil is wiped off with a cloth (waste) impregnated with a degreasing agent such as silicon off.

Next, the removal of the old coating film, which is different from the degreasing treatment, depends on the state of the damaged portion N and the damaged portion N.
And the treatment applied to the old coating film in and around it. When the damage is a dent, the old coating film in the dent portion is almost always removed. Further, when the damage is a line scratch, a scratch, a nail, or the like, the old coating film has already been removed. Therefore, it is determined whether or not the old coating film is further removed depending on the state of the damage. Here, the removal of the old coating film is also a pretreatment that has been conventionally performed, so that it can be performed by a conventional method using a device such as a disk sander or a double sander.

The work for removing the feather edge is a work which is carried out at the same time as the work for removing the old coating film or after the work,
This is a work to give a smooth inclination to the cross section of the coating film from the old coating film to the steel plate surface or the resin part surface exposed by the removal of the old coating film. The angle of inclination is generally about 27 to 54 degrees. The work of removing the feather edge is also a work that has been performed conventionally, and the repair method of this embodiment can also follow the conventional method. Further, in this step, it is assumed that work is performed using the double action sander as in the first embodiment.

Thereafter, the old coating film-removed surface and its periphery are preferably washed by air blow or the like, and degreasing is performed as described above. In this step, a putty made of a thermosetting resin is embedded in the damaged portion N thus pretreated as necessary, and the putty is filled with the putty by curing the putty by heat. .

Examples of the thermosetting resin used as the putty in the method for repairing the painted surface of the vehicle of the present embodiment include unsaturated polyesters generally used as raw materials for putty for automobiles and the like.

This putty contains a polyester resin as an interview material, an organic peroxide as a curing agent, and a plasticizer.
It is produced by mixing with a colorant thickener.

The putty produced from these ingredients is generally called a polyester paste. Other than this, it is also possible to use an epoxy putty that uses an epoxy resin as a main component, a lacquer putty that uses an acrylic resin as a main component, or a putty that is a mixture of aluminum or glass fiber.

In the putty filling step of this embodiment, such putty is embedded in the damaged portion N of the pre-treated vehicle coating surface. The putty can be embedded in the same manner as in the past. In a preferred method, the amount of putty which is slightly larger than the volume to be filled is set as the filling amount of the putty, and the putty is filled in several times. At the first time, a proper amount of the filling amount is embedded in the damaged portion N with a plastic spatula so as to be squeezed.

Further, the remaining putty is divided into appropriate amounts from the above, and the putty is applied again with a plastic spatula so as not to entrap air. After putting the putty, the putty embedded part is slightly raised from the old paint film surface,
The thickness of the putty embedded in the putty is 0.
The thickness is about 1 to 1.0 mm. Therefore, the thickness of the embedded portion of this putty is approximately 0.4 to 3.0 mm, although it depends on the thickness of the old coating film.

After the putty is embedded, the putty embedded in the putty embedding portion is dried by the first drying device. Since the description of the first drying device has been given in the first embodiment, a detailed description thereof will be omitted in the present embodiment.

Since the putty in this embodiment is cured by heat, in the first drying device 100 shown in FIGS. 3 to 11, only the infrared irradiation device 5 is operated.

Here, a drying / curing comparison test of putty carried out by the first drying apparatus 100 shown in FIGS. 3 to 11 and a conventionally used drying apparatus will be described.

In this test, the temperature is 12 to 14 ° C. and the humidity is 50%.
It was carried out in the atmosphere. The putty used in this test is Manten 710 manufactured by Solar Co. In this test, this putty is stretched to a film pressure of about 3 mm, and the time required for drying and curing the putty from various distances with various drying devices and the accompanying drying / curing state of the putty are confirmed. . It should be noted that the judgment of the dried / cured state of the putty can be made by rubbing the surface of the putty with a spatula (commonly called the putty vera, hereinafter referred to as the putty vera) used for filling the putty at a predetermined time in a continuous heating state. Judging from

Here, the conventional dryer A used as the conventional dryer is a high warm dry (model MW308) manufactured by Daito Sangyo Co., Ltd., and the conventional dryer B is
It is assumed that the heater is a heater with a temperature adjusting function manufactured by Company B, and the conventional drying apparatus C is an Infrara heater (model SM800.1) manufactured by Infrara Co. (all are not shown).

The specifications of the conventional dryer A are three-phase power source 20
0V, rated power 5.6Kw, specification of conventional drying device B is power supply three-phase 200V, rated power 3Kw, specification of conventional drying device C is power supply three-phase 230V, rated power 8Kw Further, the conventional drying device A and the conventional drying device C are heaters that radiate heat at a predetermined temperature, and the conventional drying device B is a heater having a temperature adjusting function. The test was conducted at 65 ° C.

The drying distance in this test was determined to be the optimum distance for drying and curing the putty based on the manufacturer's instruction manual. By the way, the drying distance of the first drying device 100 is 40 cm, and the drying distance of the conventional drying device A is 55 c.
m, the drying distance of the conventional drying device B is 40 cm, and the drying distance of the conventional drying device C is 65 cm.

Table 1 shows the test results conducted under the above conditions.

[0313]

[Table 1] Then, as shown in Table 1, it took 4 minutes and 30 seconds for the putty to cure in the conventional drying apparatus A and the conventional drying apparatus B. Furthermore, the conventional drying device C takes 6 minutes to cure the putty.

Further, the surface of the putty dried and cured by the conventional drying device B had remarkable unevenness and was sticky.

Although the surface of the putty dried and cured by the conventional drying apparatus C has less unevenness than the surface of the putty dried and cured by the conventional drying apparatus B, it is still insufficient as a finished surface. It was finished.

However, in the first drying device 100 shown in FIGS. 3 to 11, the putty can be cured in 3 minutes, and the surface of the dried and cured putty was finished smoothly.

As described above, the reason why the first drying device 100 can dry and cure the putty so that the surface of the putty is smooth in a short time is that the first drying device 100 is based on the ideal drying mechanism. This is for drying and curing.

Usually, in order to efficiently dry the coated surface,
First, it is necessary to maintain the softness of the putty surface immediately after filling the putty. This is to prevent the volatile solvent (thinner, etc.) in the putty from becoming less likely to volatilize because the air permeability of the putty surface is impaired as the putty surface is cured.

Therefore, in the above-described output control immediately after the putty is filled, the outputs of the IR heater 5 and the blower 7 are lowered, the radiant energy of the IR heater 5 is mainly raised to increase the vapor pressure inside the putty, and the solvent is volatilized from the inside of the putty. Is promoting.

Then, after the solvent in the putty is almost volatilized, the temperature of the entire putty is raised and the surface of the putty is dried with warm air. This is performed in order to accelerate the chemical reaction of the resin material contained in the putty to accelerate the polymerization rate of the resin material and to cure the surface of the putty in a soft state to completely dry the entire putty.

Therefore, in the above-mentioned output control, the outputs of the IR heater 5 and the blower 7 are increased so that the radiant energy of the IR heater 5 rapidly accelerates the chemical reaction inside the putty, and the blower 7 blows air to the surface of the putty. The water contained in the putty is evaporated by the hot air to be cured. The output adjustment may be performed by adjusting the output (illuminance) by increasing or decreasing the output of the device itself and by increasing or decreasing the number of operating devices.

First, the putty surface is irradiated with infrared rays by the IR heater 5. In addition, wind is sent from the four blowers 7 to the putty surface. Then, since the infrared rays radiated by the IR heater 5 have heat, warm air is blown onto the putty surface.

As described above, since the first drying device 100 shown in FIGS. 3 to 11 can apply heat and wind to the putty surface at the same time, the putty can be efficiently cured. In addition, the wind from the blower 7 is the ventilation port 10 as described above.
It is led to the irradiation part 5a by c.

Although the putty filling process is completed at this point, if a sufficiently smooth surface does not appear after the above-mentioned one putty filling process, the second putty is put on the first putty. Putty filling can be performed as described above.

Putty Grinding Step Next, putty grinding shown in FIG. 1 (v) is performed. In the putty grinding step of this embodiment, the first polishing tool 49 shown in FIGS. 12 to 18 used in the first embodiment is also used.

Then, after the putty-filled surface is polished smoothly by the first polishing tool 49, a work for forming a primer surfacer layer is performed in order to prevent corrosion, enhance the smoothness of the coated surface, the sealing property and the adhesion. It

Step of forming primer surfacer layer As shown in FIGS. 1 (vi) to (viii), the primer surfacer layer J is formed on the surface D2 of the putty polished in the above putty grinding step. At this time, it is preferable that the primer surfacer layer J is also formed around the boundary between the putty and the old coating film. More preferably, the primer surfacer layer J is thickest on the surface D2 of the putty that has been polished and near the boundary between the putty and the old coating film with a constant thickness, and the thickness of the primer surfacer layer J gradually increases as the distance from the boundary increases. It is formed to be thin.

Further, the primer surfacer layer J is obtained by uniformly spray-coating a primer surfacer made of a thermosetting material and having a viscosity capable of spray application on the coated surface including at least the putty surface after the above-mentioned steps. It is obtained by heat-curing the coating film of the surfacer. Before forming the primer surfacer layer J,
Preferably, the putty exposed surface and the surrounding old paint film surface are washed with air blow or the like, and further degreased.

The primer surfacer used in the method for repairing the painted surface of the vehicle of the present embodiment contains a thermosetting resin which is hardened by heat, and the primer surfacer layer J after hardening is used.
Can be used without any particular limitation as long as it has good adhesion to the putty or the topcoat paint formed on the primer surfacer layer J.

Further, in the method for repairing a vehicle coated surface in the present embodiment, the method of spray-coating the primer surfacer is not particularly limited as long as it can uniformly spray the primer surfacer on the coated surface, but the first embodiment Like the form, preferably, (1) while spraying the primer surfacer continuously, move the spray gun within the range to be applied, spray-apply the primer surfacer to the same place a plurality of times, and (2) spray-apply. The solvent is removed from the primer surfacer by forced drying. By repeating these operations (1) and (2) alternately a plurality of times, the primer surfacer can be accurately sprayed onto the painted surface of the vehicle by a spray gun (painting device). The spray gun in this embodiment is the same as the spray gun 301 shown in FIG. 28 used in the first embodiment, and detailed description thereof will be omitted.

After the application of the primer surfacer,
Dry and cure the primer surfacer. For drying and curing the primer surfacer, used in the first embodiment,
The first drying device 100 shown in FIGS. 3 to 11 is used. Incidentally, since the primer surfacer in this embodiment is cured by heat, the IR surface of the infrared device is the same as when the putty is cured.
It is cured by the infrared rays emitted from the heater 5. Of course, the primer surfacer is hardened by blowing warm air from the heat emitted from the infrared rays and the wind emitted from the blower.

Here, the dry comparison test of the primer surfacer performed by the first drying device 100 and the conventionally used drying device will be described.

In this test, the temperature is 11 to 12 ° C. and the humidity is 50%.
It was carried out in the atmosphere. The primer surfacer used was Urethane Plasaf SB Alpha manufactured by Nippon Paint Co., Ltd.

In this test, the above-mentioned primer surfacer applied to the panel by the spray gun shown in FIG. 28 is dried and cured by the first drying device 100, and the dried and cured state of the primer surfacer application surface is confirmed. It is a test.

In this test, the test is performed using the first drying device 100, the conventional drying device A, the conventional drying device B, and the conventional drying device C shown in FIGS. Incidentally, these conventional dryers A, B, and C are the same as the dryers used in the above-mentioned test regarding the putty dry state.

Further, the first drying device 100 conducts the test by operating only the infrared irradiation device 5 as in the case of the test concerning the putty dry state described above.

In addition, the drying distance of the drying device in this test is the same as in the test relating to the putty dry state. The drying distance of the first drying device 100 is 40 cm, and the drying distance of the conventional drying device A is 55 cm. The drying distance of the mold dryer B is 40 cm, and the drying distance of the conventional dryer C is 65 cm.
Is.

Further, in this test, in order to confirm whether or not the primer surfacer was dried / cured, the surface of the primer surfacer was scratched in a grid pattern with a putter, and the dried / cured state of the primer surfacer coated surface was checked from the scratched state. to decide.

In this test, the drying apparatus is continuously operated, and the surface of the primer surfacer is observed by rubbing the primer surfacer application surface with a putty vera every 30 seconds in a continuous heating state.

The test results are shown in Table 2 and FIGS.
Shown in. 53 to 56 are cross-sectional views of steel plates when a cross-cut is made on the primer surfacer application surface.

[0341]

[Table 2] As shown in Table 2, the conventional drying device A has 7 minutes or more to dry and cure the primer surfacer.

Further, as shown in FIG. 54, when a cross-cut is made on the surface of the steel plate on which the primer surfacer has been dried and hardened by the conventional dryer A, the cut ends are raised and the surface becomes uneven.

Further, as shown in FIG. 55 and FIG. 56, when the notch of the cross is made on the surface of the steel plate on which the primer surfacer has been dried and hardened by the conventional dryer B, Similarly, the cut edge is raised and the surface is uneven.

However, as shown in FIG. 53, as shown in FIGS.
When a cross-cut is made on the surface of the steel plate on which the primer surfacer is dried and hardened by the first drying device 100 shown in 1, the cut surface is not raised and the surface is in a smooth state.

This indicates that when the primer surfacer is dried and cured by the conventional dryer A, even though the surface seems to be dried and cured, the inside is not completely dried. ing.

That is, in the conventional drying device A, only the surface of the primer surfacer application surface can be dried and cured in about 9 minutes, but it cannot be dried and cured from the inside.

Further, in order to completely dry and harden the inside, it is necessary to further heat, but if the heating time becomes long, the steel plate temperature rises more than necessary. You have to

On the other hand, the first drying device 1 shown in FIGS.
According to 00, not only the surface of the primer surfacer application surface but also the inside can be dried and cured in 6 minutes. The mechanism will be described below.

First, the first heater 100 is the IR heater 5
And the output of the blower 7 is lowered, the radiant energy of the IR heater 5 is mainly raised to increase the vapor pressure inside the primer surfacer,
It promotes the volatilization of the solvent from the inside of the primer surfacer application surface.

That is, by using the first drying device 100, the standing time (commonly called flash time) for evaporating the solvent in the primer surfacer can be shortened or omitted. This is commonly called non-flash.

Then, after the solvent in the primer surfacer has almost volatilized, the temperature of the entire primer surfacer is raised and the surface of the primer surfacer is dried with warm air. This is performed in order to accelerate the chemical reaction of the resin material contained in the primer surfacer to accelerate the polymerization rate of the resin material, and at the same time, to cure the surface of the primer surfacer in a soft state to completely dry the entire primer surfacer.

Therefore, in the above-mentioned output control, the outputs of the IR heater 5 and the blower 7 are increased, the radiant energy of the IR heater 5 accelerates the chemical reaction inside the primer surfacer rapidly, and the blower 7 causes the surface of the primer surfacer to move. The water contained in the primer surfacer is evaporated by the warm air blown to the hardener to cure it.
The output adjustment may be performed by adjusting the output (illuminance) by increasing or decreasing the output of the device itself and by increasing or decreasing the number of operating devices.

That is, in the above-mentioned output control, first, the primer surfacer coating surface is irradiated with infrared rays by the IR heater 5, and then the air is blown from the four blowers 7 to the primer surfacer coating surface. Then, the IR heater 5
Since the infrared rays radiated by have heat, hot air is blown to the primer surfacer application surface.

As described above, the first drying device 100 shown in FIGS. 3 to 11 can simultaneously apply heat and air to the primer surfacer application surface, so that the primer surfacer can be efficiently dried and cured. .

Further, according to the first drying apparatus 100, the solvent can be efficiently volatilized in one drying step and the primer surfacer can be polymerized to dry the primer surfacer coated surface in a short time. It is possible to shorten or omit the naturally drying time (commonly called setting time). This is commonly called non-setting.

Through the above steps, after the primer surfacer layer J is completely cured and formed, its surface is polished. In order to polish the surface of the primer surfacer layer J, a polishing tool is attached to a driving device (vibrating machine, vibrator) such as a straight sander or an orbital sander to carry out polishing. Note that the polishing tool in the present embodiment also uses the same polishing tool as the second polishing tool shown in FIGS.

When the primer surfacer layer forming step is completed, a pigment is applied to the polished application surface Q, the pigment is dried, and an overcoating step of polishing the surface is performed.

Topcoating Step The topcoating step will be described in detail below. It should be noted that there is a step of cleaning the surface of the primer surfacer layer J and the surface of the old coating film around the primer surfacer J by air blow or the like and further degreasing before performing the overcoating, but the description thereof will be omitted.

The overcoating in the method for repairing the painted surface of the vehicle of the present embodiment can be performed in the same manner as the method for overpainting that is usually performed in repairing the painted surface of a vehicle or the like. For example, in accordance with the old coating film, a suitable coating method is selected from solid coating, metallic coating, coating containing pigments such as 3 coat mica coating, and the coating is performed.

In this step of this embodiment, the paint is applied by using the spray gun shown in FIG. 28 used in the first embodiment.

When the coating is completed, the first drying device 100 shown in FIGS. 3 to 11 dries the coated surface. Here, since the coating material in the present embodiment is a thermosetting coating material that is cured by heat, the infrared ray irradiation device 5 irradiates the coating material surface with infrared rays, and the blower 7 radiates wind to dry and cure the coating material.

Then, a paint containing no pigment (commonly known as clear, hereinafter referred to as clear) is applied as a final coating on the paint application surface. The coating method is almost the same as the coating method described above, and is applied with a spray gun.

When the clear coating is completed, the clear coated surface is naturally dried and cured to complete the repair of the vehicle coated surface. For clearing and curing of the clear here, see FIGS.
The first drying device 100 shown in 1 is used.

Here, a dry comparison test of clear performed by the first drying device 100 and the conventionally used drying device will be described.

This test was carried out in the air at a temperature of 25 to 28 ° C. The clear used in the test is Multi Paint HG manufactured by Nippon Paint Co., Ltd.

In this test, the above-mentioned clear was applied to a steel plate with a coating thickness of 25 to 30 μm by a spray gun having an air pressure of 2 Mpa and a gun diameter of 1.4 mm with a distance to the coating surface of 15 cm. This is a test to check the dried / cured state of the clear coated surface by drying / curing things with various drying devices.

In this test, the test is carried out using the first drying device 100, the conventional drying device A and the conventional drying device C shown in FIGS. The conventional type drying devices A and C are the same as the drying device when the above-mentioned primer surfacer drying / curing comparison test is performed, but a high worm dry heater (model MW308) manufactured by Daito Sangyo Co., Ltd. It is a Lara heater (type SM800.1).

Further, since the clear used in this test is a thermosetting clear, the first drying device 100 uses the infrared irradiation as in the case of the putty drying / curing test or the primer surfacer drying / curing test described above. The test is carried out by operating only the device 5.

In addition, the drying distance of the drying device in this test is 40 cm for the first drying device 100, 40 cm for the conventional drying device A, and 40 cm for the conventional drying device C.
The drying distance was 100 cm. This drying distance is a value based on the manufacturer's instruction manual for each drying device.

Further, in this test, in order to confirm the dried / cured state of the clear coated surface, the coated surface is scratched with sandpaper, and the dried / cured state is judged from the scratched state.

Therefore, the test results are shown in the graphs of FIGS. 57 to 59. Note that FIG. 57 is a graph showing the transition of clear drying / curing by the first drying device 100.
Is a graph showing a clear drying / curing transition by the conventional drying apparatus A, and FIG. 59 is a graph showing a clear drying / curing transition by the conventional drying apparatus C. The start of the horizontal axis of each graph is 3 minutes because the drying device was warmed up for 2 minutes and flash-off was performed for 1 minute.

Further, in the graphs of FIGS. 57 to 59, the vertical axis represents the polishability determined by rank A to D indicating whether or not the coated surface state allows polishing, and the horizontal axis represents the drying time. Incidentally, the A-rank indicates the most polished state of the coated surface, and the B-rank, the C-rank and the D-rank indicate the state of the painted surface which is not suitable for polishing.

Further, in this test, rank B or higher is a painted surface state capable of polishing. In addition, the coated surface state in the A rank and the B rank is a state in which the clear does not get entangled with the sand paper even when rubbed with sand paper.

Then, as shown in FIG. 58, the center of the steel sheet dried and cured by the conventional dryer A reaches rank B in 9 minutes and reaches rank B in 12 minutes including the outside. .

In other words, the conventional drying device A can dry and cure the clear coated surface in 12 minutes.

Further, as shown in FIG. 59, the steel sheet dried and hardened by the conventional dryer C has a center portion B in 12 minutes.
Reach Rank B, and reach Rank B 15 minutes later, including outside.

In other words, the conventional drying device C can dry and cure the clear coated surface in 15 minutes.

As described above, it was confirmed that it takes 12 minutes or more to dry and cure the clear coated surface in the conventional dryer.

However, as shown in FIG. 57, as shown in FIGS.
According to the first drying apparatus 100 shown in 1, the central portion reaches the B rank in 6 minutes, and reaches the B rank including the outside in 10 minutes.

[0380] That is, it was confirmed by this test that, according to the first drying apparatus 100 shown in Figs. 3 to 11, the work of drying and curing the coated surface, which took 12 minutes or more, can be performed in 10 minutes. Was done.

This is due to the unique drying / curing mechanism of the first drying device 100. The drying / curing mechanism will be described below.

First, the first drying device 100 is the IR heater 5
Further, the output of the blower 7 is lowered, the radiant energy of the IR heater 5 is mainly raised to increase the vapor pressure inside the clear, and the volatilization of the solvent from the inside of the clear coated surface is promoted.

That is, by using the first drying device 100, it is possible to shorten or omit the standing time (so-called flash time) for evaporating the solvent in the clear. This is commonly called non-flash.

Then, after the solvent in the clear has almost volatilized, the temperature of the entire clear coated surface is raised and the clear surface is dried with warm air.

Therefore, in the above-mentioned output control, the outputs of the IR heater 5 and the blower 7 are increased, the radiant energy of the IR heater 5 accelerates the chemical reaction inside the primer surfacer rapidly, and the blower 7 causes the surface of the primer surfacer to move. The water contained in the primer surfacer is evaporated by the warm air blown to the hardener to cure it.
The output adjustment may be performed by adjusting the output (illuminance) by increasing or decreasing the output of the device itself and by increasing or decreasing the number of operating devices.

That is, in the above-mentioned output control, first, the clear coating surface is irradiated with infrared rays by the IR heater 5, and then the air is sent from the four blowers 7 to the clear coating surface. Then, since the infrared rays emitted by the IR heater 5 have heat, warm air is blown onto the clear coating surface.

As described above, since the first drying device 100 of the present invention can apply heat and wind to the clear coating surface at the same time, the clear coating surface can be efficiently dried and dried.
Can be cured.

Further, according to the first drying apparatus 100, the clear coated surface can be dried in a short time by efficiently volatilizing the clear and polymerizing the clear in one drying step. The standing time (commonly called setting time) can be shortened or omitted. This is commonly called non-setting.

Then, the completely hardened coated surface is polished. This polishing is also the same as the polishing in the first embodiment, and therefore its explanation is omitted.

As described above, the first drying apparatus 100 shown in FIGS. 3 to 11 can be preferably used even if the putty, primer surfacer and clear are thermosetting.

<Third Embodiment> In this embodiment, an ultraviolet irradiator for drying and curing an ultraviolet curable coating material such as putty or paint is appropriately moved to a coated surface having a damaged portion N. Putty which is filled in the damaged part of the vehicle coated surface by using the second drying device equipped with the moving device, and / or
Alternatively, the second drying device for drying the paint applied to the surface of the putty that has been polished will be described in detail.

First, the outline of the second drying device in this embodiment will be described. In the present embodiment, the coating material includes paints such as putty and primer surfacer, and the portion to which the coating material is applied is the coated surface.

The second drying device of the present embodiment has a vertical frame 402 formed in a frame shape as shown in FIG. 60, and a horizontal frame provided in the vertical frame 402 and slidable in the vertical direction. 403 and horizontal frame 403
And an arm frame 404 that is provided so as to be orthogonal to the horizontal frame 403, is slidable in the axial direction of the horizontal frame 403, and is orthogonal to the horizontal frame 403, and is vertically rotatable about the horizontal frame 403 as a rotation center. It has a rack 401. Further, a drying tool 405 for drying the coating material applied to the panel surface of the vehicle is provided at the tip of the arm frame 404 at an angle.

Further, 2 is provided on the lower end side of the vertical frame 402.
A leg base frame 406 is provided, and the vertical frame 402 is stably installed on the floor, which is a work place, via the base frame 406. The base frame 406 has a plurality of wheels (casters) 406.
Since a is provided, the support rack 401 can be easily moved on the floor surface which is the work place. Further, below the support rack 401, a control box 407 accommodating a control board for controlling the drying device 405 and each movable part of the support rack 401 is provided. And
Based on various conditions, each movable part of the support rack 401 and the drying device 405 are controlled by a control signal from a control board provided in the control box 407 to dry the paint applied to the panel surface. Hereinafter, these configurations will be described in more detail.

The vertical frame 402 is composed of two columns 420 which are erected on the floor, which is a work place, via the base frame 406, and one column 420 has an end portion which is the other column 420.
And a connection frame 421 that is connected to the end portion thereof in the form of a frame that is long in the height direction. Further, each of the columns 420 has a cylindrical shape, and inside thereof, a slide mechanism including an annular chain 422 and a drive motor 423 shown in FIG. 61 is provided. The horizontal frame 403 is installed between the columns 420 having this slide mechanism.

As shown in FIGS. 61 and 62, the slide mechanism provided in the column 420 includes a drive motor 423 provided at the lower end of the column 420 and the drive motor 423.
Sprocket 424 and column 42 provided on the rotating shaft of the
0 has a pulley 425 provided on the upper part thereof, an annular chain 422 stretched between the sprocket 424 and the pulley 425, and a bracket 426 fixed to one side of the annular chain 422. Bracket 42
6, the end of the horizontal frame 403 is connected.

On the other hand, the guide rails 427 and the slots 42 shown in FIG.
8 are provided. A part of the bracket 426 extends to the outside of the column through the slot 428 and supports the horizontal frame 403. Further, the bracket 426 is provided with a plurality of rollers 429, and is rollably engaged with the guide rail 427. Therefore, by rotating the sprocket 424 provided on the rotation shaft of the drive motor 423 forward or backward to wind the chain 422,
The bracket 426 moves up and down along the guide rail 427, and the horizontal frame 403 held by the bracket 426 slides in the vertical direction of the vertical frame 402 (direction of arrow Y in FIG. 61).

As shown in FIGS. 63 and 64, the horizontal frame 403 includes the brackets 426 shown in FIG.
A horizontal frame support rod 411 whose both ends are fixed to the horizontal frame support rod 411,
The horizontal frame main body 412 is provided so as to be rotatable around 11 as a rotation center, and the arm frames 404 are provided on the horizontal frame main body 412 so as to be orthogonal to each other.

Further, the structure for attaching the horizontal frame main body 412 to the horizontal frame support rod 411 is as follows.
The horizontal frame main body 412 includes a fixed gear 413 provided near both ends of the horizontal frame 11 and fixed to the horizontal frame support rod 411, and a worm gear 414 meshing with the fixed gear 413.
And a connecting block 416 for rotatably connecting the horizontal frame main body 412 to the horizontal frame support rod 411. The horizontal frame main body 412 is provided with a drive motor 415. The main body 412 has a structure in which the horizontal frame support rod 411 rotates about its axis about the axis of rotation. That is, when the drive motor 415 is driven, the arm frame 404 rotates in the vertical direction (direction of arrow R in FIG. 61) about the horizontal frame support rod 411 as a rotation center.

Here, it is assumed that the drive motor 415 for rotating the worm gear 414 is a motor incorporating a reduction gear with a high reduction ratio. In addition, the connection block 41
A rotation angle sensor 417 for detecting the rotation angle of the horizontal frame main body 412 with respect to the horizontal frame support rod 411 is attached to 6. Further, the horizontal frame main body 412 has a box shape formed to have substantially the same length as the horizontal frame support rod 411,
Inside the arm frame 404 is the horizontal frame body 4
It has a built-in slide mechanism for sliding in 12 axial directions. An arm frame 404 is slidably provided via this slide mechanism. A detailed description of this slide mechanism will be given together with a slide mechanism provided on the arm frame 404 described later.

The arm frame 404 provided on the horizontal frame body 412 is formed in a box shape having a length substantially equal to that of the horizontal frame body 412.
The horizontal frame main body 4 through the slide mechanism provided in 2.
It is attached to 12. And the arm frame 4
Reference numeral 04 slides in the axial direction of the horizontal frame body 412 (direction of arrow X in FIG. 61) when the slide mechanism provided in the horizontal frame body 412 is driven. On the other hand, arm frame 4
On the 04 side as well, a slide mechanism substantially similar to the slide mechanism provided on the horizontal frame body 412 is provided, and when the slide mechanism provided on the arm frame 404 side is driven, a direction orthogonal to the horizontal frame 403 (FIG. The arm frame 404 has a structure that slides in the direction of the middle arrow Y ′ of 61.

A sliding mechanism provided on the horizontal frame body 412 and the arm frame 404 will be described below with reference to FIG.
From now on, it demonstrates in detail with reference to FIG. Note that FIG.
4 is an enlarged view showing a connecting portion between the horizontal frame main body 412 and the arm frame 404, and FIG. 65 is a view schematically showing a slide mechanism provided in the horizontal frame main body 412.

First, the slide mechanism provided on the horizontal frame body 412 will be briefly described with reference to FIG. Figure 6
As shown in FIG. 3, the slide mechanism provided in the horizontal frame body 412 is mounted between the guide pulley 431 or the drive pulley 432 provided at the end of the horizontal frame body 412 and the guide pulley 431 and the drive pulley 432. An annular belt 433 passed over, a drive motor 434 provided on the drive pulley 432 and rotating the pulley 432,
Belt 433 hung between pulleys 431 and 432.
Frame connecting plate 435 fixed to one side
And has a belt 433 when the drive motor 434 is driven.
Is rotated so that the frame connecting plate 435 slides in the axial direction of the horizontal frame body 412 together with the belt 433.

The frame connecting plate 435 is a U-shaped metal plate having both ends bent in the same direction, and each of the bent parts has a plurality of rollers 4.
36 is attached. In addition, the horizontal frame body 41
Two guide rails 437 are provided inward of 2 in addition to the above-described configurations along the longitudinal direction thereof. The roller 436 provided on the frame connecting plate 435 is rollably engaged with the guide rail 437. Therefore, when the frame connecting plate 435 moves, it moves along the guide rail 437.

A rotation angle sensor 438 for detecting the rotation angle of the drive pulley 432 is attached to the drive pulley 432, and a plate for connecting the frame to the horizontal frame main body 412 is detected from the value detected by the rotation angle sensor 438. The amount of movement of 435 can be detected. That is, the rotation angle of the drive pulley 432 detected by the rotation angle sensor 438 is fed back to drive the drive motor 43.
By controlling the rotation of the frame 4, the frame connecting plate 435 can be slid to a desired position.

Here, as the drive motor 434, a motor having a large driving force and incorporating a reduction gear is adopted. Further, the drive pulley 432 and the belt 433 are provided with teeth that mesh with each other. Therefore, the drive motor 43
The rotation of the belt 4 is accurately performed through the drive pulley 432.
3 is transmitted.

On the other hand, the slide mechanism provided on the arm frame 404 side has the same structure as the slide mechanism provided on the horizontal frame body 412 described above. Figure 6
4 and the slide mechanism provided on the arm frame 404 side as shown in FIG. 65, a guide pulley 441 or a drive pulley 442 provided at the end of the arm frame 404.
A belt 443 stretched between the guide pulley 441 and the drive pulley 442, a drive motor 447 for rotating the drive pulley 442, and a rotation for detecting the rotation angle of the pulley 42 by connecting to the drive pulley 442. Corner sensor 4
44, a frame connecting plate 448 fixed to one side of the belt 443, two guide rails 446 extending in the axial direction of the arm frame 404, and rollers rotatably engaged with the guide rails 446. 445, and by feeding back the value detected by the rotation angle sensor 444 to control the drive motor 43, the frame coupling plate 448 can be slid to a desired position.

Then, each frame connecting plate 43
The horizontal frame body 412 and the arm frame 404 are connected to each other by 5, 448 so as to be orthogonal to each other. That is, when the frame connecting plate 448 provided on the arm frame 404 side is connected to the frame connecting plate 435 provided on the horizontal frame main body 412 side by rotating it by 90 degrees, the arm frame 404 is connected. Four
12 (horizontal frame 403) can be slid in the axial direction and the orthogonal direction. The control of the drive motors 434 and 447 associated with the sliding of the frames 3 and 4 will be described in detail together with the control of the drying device 405 described later.

As described above, the arm frame 404 is provided slidably in the axial direction and the orthogonal direction of the horizontal frame 403. A drying device 405 for drying paints applied to the panel surface of the vehicle is rotatably attached to the tip of the arm frame 404. In the following description, the panel surface coated with the coating material will be simply referred to as the coating surface.

As shown in FIG. 66, the drying device 405 is
A casing 51 formed in a rectangular box shape having an opening 451a at one end, an infrared irradiation unit 452 provided in the casing 51 for irradiating a coated surface with infrared rays, and an infrared irradiation unit 452 attached to a side wall surface of the casing 451. Blower 4 for blowing the air warmed by the air from the opening 51a of the housing 451 to the painted surface.
53, and an ultraviolet irradiation unit 4 provided on the side of the housing 451 for irradiating the coated surface with ultraviolet light from the opening 51a of the housing 451.
54 and. The infrared ray irradiator 452 is provided with an IR (infrared ray) heater 452a for radiating mid-infrared rays. Further, the ultraviolet irradiation unit 454 has a wavelength of 410
A UV lamp 454a having a peak of spectral energy near nm is provided.

Further, the drying device 405 is provided with a distance detecting sensor 455 for detecting the distance from the coating surface to the drying device 405, and a dry state detecting sensor 456 for detecting the dry state of the coating surface. In the present embodiment, an oscillating unit that emits a predetermined number of ultrasonic waves as the distance detection sensor 455, a receiving unit that receives the ultrasonic waves oscillated from this oscillating unit, and the ultrasonic waves oscillated from the oscillating unit reach the receiving unit. An ultrasonic distance measuring sensor having a conversion processing unit that measures the time until it is converted into a distance is adopted, and a plurality of ultrasonic distance measuring sensors are provided along the periphery of the opening of the housing 451 as shown in FIG. There is. More specifically, the distance detection sensor 455
67 are attached at two upper and lower positions around the opening that coincide with the axis of the arm frame 404 as shown in FIG. The conversion processing unit described above is housed in a control box 407 mounted below the vertical frame 402. Further, the mounting position and the number of the distance detection sensors 455 are not limited to the above example.

Further, as the dry state detection sensor 456, a gas sensor which detects the solvent vaporized when the coating material is dried and recognizes the dry state of the coated surface is adopted.
More specifically, the amount of the solvent contained in the air is utilized by utilizing the fact that alcohol contained in the paint or putty as a solvent is vaporized and adheres to the sensor surface to change the electric resistance of the sensor. Density) is detected. Then, it is considered that the dry state is reached in response to the amount (concentration) of the solvent contained in the air reaching a predetermined value or less.

Further, as shown in FIGS. 66 and 67, the attachment structure of the drying device 405 to the arm frame 404 is such that the rotary shaft 490 provided at the tip of the arm frame 404 and the end of the rotary shaft 490 are attached to the rotary shaft 490. The reduction gear 491 provided, a drive motor 493 provided with a pinion gear 492 that meshes with the reduction gear 491, and the rotary shaft 4
A stay 494 that is fixed to 90 and that rotates with the rotation of the rotating shaft 490.
5 is fixed. Therefore, the fixing angle of the drying device 405 with respect to the arm frame 404 can be changed by rotating the drive motor 493 forward or backward. Further, the rotation shaft 490 is provided with a rotation angle sensor 495 that detects an inclination angle (position) of the drying device 405 with respect to the arm frame 404.
By feeding back the value obtained by 95, the inclination angle of the drying device 405 with respect to the arm frame 404 can be changed to a desired inclination angle.

Further, as shown in FIGS. 66 and 67, the drying device 405 is rotatably attached to the stay 494 itself. The stay 494 is composed of a stay main body 494a fixed to a rotary shaft 490 provided on the arm frame 404 and an arm portion 494b connected to the drying device 405. The stay main body 494a has a distal end to which the stay 494 is dried. A connecting bolt 494c, which serves as a rotation center of the device 405, is provided. The arm 494b is rotatably attached to the connecting bolt 494c. That is, the arm portion 494b is rotatably provided around the axis of the arm frame 8 as the center of rotation. Therefore, the drying device 405 is connected to the arm frame 40
It will be provided at an angle with respect to 4. In addition, in the present embodiment, in the rotating operation of the drying device 405 with respect to the stay 494, a movable device including a drive motor or the like is not provided, but of course, the rotation operation is configured by the drive motor and the rotation angle sensor and the like. It may be controlled by mounting a movable device.

Thus, the drying device 405 is supported by the support rack 401 having a plurality of movable parts. Although each movable part can be arbitrarily moved by manual control (manual mode), usually, automatic control based on the values obtained by the distance detection sensor 455 and the dry state detection sensor 456 provided in the drying device 405. (Automatic mode). In addition, on the side of the vertical frame 402, an operation unit 410 including a control mode changeover switch for switching between the manual control and the automatic control, an operation switch for individually moving each movable part during the manual control, and the like is provided. Therefore, it is possible to switch the mode and move each movable part by the operation unit 410.

The automatic control means the distance detection sensor 45.
5, based on the value obtained by the dry state detection sensor 456, the control for moving the drying instrument 405 so that the distance and the angle of the drying instrument 405 with respect to the panel surface are always kept constant. This is a control for moving the drying device 405 to another area when it is determined that the coated surface is in a dry state. Here, the other region refers to the undried coated surface.

Hereinafter, a procedure for drying the coating material such as putty and primer surfacer coated on the door panel D using the above-mentioned second drying device 408, and a control example of each movable part related to the above-mentioned automatic control Will be described with reference to FIGS. 68 to 72. As the door panel D, a door panel in which the central portion of the panel is undulated will be described as an example. 68 to 70 are flowcharts showing the progress of the painting work, and FIGS. 71 and 72 are flowcharts showing the control of each movable part.

First, as shown in FIGS. 68 to 70, after the coating material is applied to the door panel D, the above-mentioned second drying device 408 is installed so as to face the door panel D (step 101). Then, the operator switches the mode selector switch of the operation unit 410 to manual control, and the drying device 405
Each frame is manually controlled so as to be placed in the vicinity of the upper right corner of the coating surface M, and the drying start point A is set (steps 102 and 103). Then, after the setting of the drying start point A is completed, the mode is switched to the automatic mode and the support rack is brought into the automatic control state (step 104). In the manual mode, the second drying device 408 is provided near the corner of the coated surface P.
When arranging, the inclination angle and the distance of the drying device 405 with respect to the coating surface M do not have to be accurately adjusted, and the second drying device 408 may simply be located near the corner of the coating surface M.

Then, the support rack 401 in the automatically controlled state moves the movable parts to move the second drying device 408.
The fixing angle of the drying device 405 is changed so that the sheet is arranged at an appropriate angle and distance with respect to the door panel D (step 105). Then, in order to dry the paint applied to the door panel D, infrared rays and air warmed by the infrared rays are irradiated and blown from the drying device 405 to dry the paint (step 106).

During this time, the distance between the drying device 405 and the painted surface M is constantly measured by the ultrasonic distance measuring sensor provided in the drying device 405. The dry state of the coated surface M is monitored by detecting the amount (concentration) of the solvent vaporized from the coated surface M with a gas sensor. Then, based on the value detected by the gas sensor, it is determined whether or not the coated surface M has dried. When it is determined that the coated surface M is in a dry state, the second drying device 408 is linearly moved to another area. (Step 107, Step 108). When it is determined in step 107 that the coated surface M has not yet reached the dry state, the control of step 106 is continued.

When the drying device 405 is moved to another area, the distance detecting sensor 455 causes the drying device 405 to move.
It is determined whether the angle and the distance between the door panel D and the door panel D have changed (step 109). Then, when the angle and the distance with the door panel D are changed, each movable part of the support rack is moved so that the second drying device 408 can correspond to the change, and the angle and the distance with the door panel D are appropriate. As described above (step 110). And
After the angle and distance of the drying device 405 with respect to the door panel D are corrected to appropriate values in step 110, the coated surface M is again irradiated with infrared rays and warm air and blown to dry the coated surface M ( Step 111).
If no change in the angle and distance of the drying device 405 with respect to the door panel D is found in step 109, the coated surface P is dried in step 111.

Then, the dry state of the coated surface P in the other region is judged based on the value obtained by the dry state detecting sensor 456 (step 112). Then, when it is determined that it is in a dry state, the drying device 4 is placed in another area.
05 is moved linearly (step 113). Also,
When it is determined in step 112 that the drying state is not yet reached, the process returns to step 111 and the drying operation is continued.

Further, the drying device 405 linearly moved to another area determines whether or not the coated surface M is dry (step 114). If it is determined that the second drying device 408 is in the dry state, the direction is changed by 180 degrees as shown by the point X in FIG. 74, and the second drying device 408 is moved to another area (step 115). Then, it is determined whether or not the coated surface M is in a dry state in the other area (step 116). Then, when it is determined in step 116 that the drying state is set, it is considered that the drying end point E has been reached, and this control is ended. Further, when it is determined in step 114 that the coating surface M is not yet in the dry state, it is determined that the coated surface M in the non-dry state remains, and the step 109 is performed.
Return to and continue the drying work.

In addition, FIG. 74 is a diagram showing the locus of the drying device 405 with respect to the coated surface M. Further, the hatching in the figure indicates the coated surface M. As shown in this figure, the drying device 405 once descends vertically from near the upper right corner of the door panel D to dry the coated surface M in that row. Then, the direction is changed at a position further lower than the coating surface M, and the coating surface M in the row is dried again by moving up along the coating surface M on the left side of the coating surface M which has been dried so far. Then, at a position higher than the painted surface M in this row, the direction is changed again and the same descends. In this manner, the coated surface M is dried in order from the upper right corner of the coated surface M.

The point X in FIG. 74, that is, the second drying device 4
The moving direction of the drying device 405 at the point where 08 is reversed is recorded in advance on the control board in the control box, and the drying device 405 moves from the right side to the left side of the coating surface M based on this data. Be moved. Further, as the data regarding the moving direction of the drying device 405, there is control such as drying from the upper side to the lower side of the coating surface M as shown in FIG. 68, and is appropriately selected according to the shape (spreading) of the coating surface M. can do.

Thus, based on the values obtained by the sensors 455 and 456, the drying device 405 for the coated surface is used.
The angle and distance are automatically controlled so that they are always suitable for drying. Further, in advancing the drying operation, since the dry state of the coated surface is constantly monitored by the dry state detection sensor, it is not necessary to manage the time spent for drying. The second drying device 408 described above is a type of the second drying device 40 that is preferably used for a relatively large area and flat panel surface such as a vehicle hood or door panel.
However, the second drying device 408 provided at the tip of the arm frame may be a drying device provided with a driving device so as to rotate about the axis of the arm frame as a rotation center. That is, the number of movable parts is not limited to the above example.

In the above example, the description has been given by taking the support rack as an example of the moving device. However, for example, movement of a structure for suspending and supporting the drying device from the ceiling so that it can be angled freely and can be moved vertically and horizontally in all directions. You may use the apparatus and the support rack used for the ultraviolet irradiation apparatus in 1st embodiment. In addition, the intended use of the present embodiment is to repair not only vehicles but also painted surfaces of high-end furniture and wall surfaces of buildings.
It can also be used for various purposes.

Further, in the second drying device 408, each movable part of the moving device is controlled based on the values obtained by the distance detection sensor and the dry state detection sensor, but the values obtained by each sensor are controlled. Can of course also be used for controlling the drying device. For example, when the dryer goes away from the painted surface,
Increase the output of the blower so that more warm air is blown to the painted surface. Further, when the drying device is too close to the coated surface, it can be used not only for controlling the moving device but also for controlling the drying device by lowering the irradiation intensity of infrared rays and ultraviolet rays. As described above, in the drying device according to the present embodiment, the drying condition can be kept constant based on the values obtained by the various sensors.

In addition, in the above-mentioned drying device, the support rack is controlled based on the values obtained from both the distance detecting sensor and the dry state detecting sensor, but only the distance detecting sensor is provided in the drying device. The movement may be controlled based on the passage of a predetermined time. That is, although the drying device illustrated in the present embodiment moves the drying device to another area after confirming the dry state with the dry state detection sensor, the drying device may be moved based on the passage of time. Alternatively, a control device such as a timer for issuing a control command may be provided to control the drying device and the support rack. Further, when only the dry state detection sensor is provided in the second drying device 408 in the present embodiment, the operator can accurately grasp the dry state of the coated surface based on the value obtained by the dry state detection sensor. Therefore, if the support rack is controlled based on the value obtained by the dry state detection sensor, a good coated surface can be obtained.

<Fourth Embodiment> In the present embodiment, when any of the coating materials such as putty and primer surfacer used for repairing a damaged portion is not an ultraviolet curable resin but a thermosetting coating material. A third drying device for drying and curing the coating material will be described.

As shown in FIGS. 76 to 79, the third drying device is a housing 508 which is a main part of the third drying device 501 with the infrared lamp 502, the electric fan 503 and the like inward.
A control system that controls the infrared lamp 502, the electric fan 503, and the like, and a support rack 501B that movably supports the housing 508.

The housing 508 has a double structure composed of an inner housing 520 and an outer housing 540.
An infrared lamp 502 that radiates infrared rays to the coated surface P, and air inside the housing 508 are circulated inside the coated surface P.
An electric fan 503 and the like are provided to accelerate the drying. That is, the housing 508 has a function as an infrared-type drying device that dries the coated surface P mainly by emitting infrared rays.

Further, the housing 508 has an air circulation path 5
04, and a flow rate adjustment mechanism. The air circulation path 504 is for allowing the circulation flow formed by the operation of the electric fan 503 shown in FIG. 80 to be repeatedly reproduced in the housing 508. The flow rate adjusting mechanism is a mechanism for limiting the flow rate of the air circulated in the housing 508 and preventing an excessive temperature rise of the air which rises in proportion to the infrared radiation time. Hereinafter, each component will be described in detail. In the following description, a set of housings including the infrared lamp 502, the electric fan 503, etc. may be abbreviated as a dryer main body 501A.

The housing 508 is provided with a predetermined space between the inner housing 520 shown in FIG. 79 in which main components for drying such as the infrared lamp 502 and the electric fan 503 are incorporated, and the surface of the inner housing. It has an outer casing 540 that encloses the inner casing 520 from the outside while keeping a gap. As shown in FIGS. 80 and 81, a part of the air circulation path 504 described above is provided in the internal housing 52.
It is formed by a gap formed between 0 and the outer casing 540.

Further, as shown in FIG. 80, the inner casing 520 has a rectangular top plate 521 and a side wall plate 522 extending from the peripheral edge of the top plate 521, one end surface of which is open. It has a box shape. In addition, the top 5
21, three infrared lamps 50 in the same plane parallel to 21.
2 are arranged in parallel and at equal intervals.

Further, each infrared lamp 502 has a reflector 5
23 is provided, and infrared rays emitted from the infrared lamp 502 are provided on the opening side (arrow A in FIG. 80) of the inner casing 520.
Direction) is reflected efficiently. In addition,
Both ends of each reflection plate 523 are fixed to the side wall plate 522, and the infrared lamp 502 in the housing 508 is positioned by the reflection plate 523.

In addition, the infrared lamp 502 has 2.5 μm.
An infrared lamp 502 that positively emits infrared light including a wavelength range of m to 14.0 μm is used. More preferably, as shown by the dotted line in FIG. 82, 3.0 μm to 4.0 μm.
An infrared lamp having a peak of radiant energy in the wavelength range of μm and 5.5 μm to 10.0 μm is adopted, and at the peak, the output of the infrared lamp 502 outputs 5
The infrared lamp 502 is used so that the output exceeds 0%, more preferably 70%.

The wavelength of 2.5 μm to 14.0 μm means a paint (pigment) widely used in ordinary painting work, for example, methyl methacrylate resin, epoxy resin, phenol resin, urea resin, melamine. If infrared rays are positively radiated in this range in accordance with the absorption spectrum of resin or the like, infrared rays are efficiently absorbed.

Further, FIG. 82 shows an infrared absorption spectrum (solid line in FIG. 82) corresponding to each resin and the infrared lamp 5.
It is a figure which shows the graph which shows the correlation with the emission spectrum (dashed line in FIG. 82) of 02. Regarding the infrared absorption spectrum, the vertical axis of the graph corresponds to the infrared absorption rate. Regarding the infrared radiation spectrum, the vertical axis of the graph corresponds to the radiant energy (radiation amount) of infrared rays. That is, it can be said that the greater the difference (opening) between the dotted line and the solid line in the figure, the greater the amount of infrared absorption in the paint.

Further, as shown in FIG. 82, the various paints (pigments) include infrared rays of 3.0 μm to 4.0 μm (between arrows A in FIG. 82) and 5.5 μm to 10.0 μm (arrows in FIG. 75). It has been ascertained in various experiments that the infrared rays (between B) are most efficiently absorbed. Therefore, in this embodiment, 3.0 μm to 4.
By setting the peak of the emission spectrum in the wavelength range of 0 μm and the wavelength range of 5.5 μm to 10.0 μm,
We are working to further reduce the drying time.

Further, the top plate 521 of the internal casing 520 has
An air introduction port 525 (communication passage) is formed to introduce the air outside the inner casing 520 to the inside. Further, each air inlet 525 has an electric fan 503 as described above.
(Blower) is installed. Further, an electric motor (not shown) and a rectifying plate 527 movable by the electric motor are attached between the respective reflection plates 523 described above.

On the other hand, as shown in FIG.
0 is the top plate 541 and the side wall plate 5 as in the internal housing 520.
It has a box shape formed by 42, and one end surface of the box is largely opened in the same direction as the opening 524 formed in the inner casing 520. The side wall plate 542 is formed to be sufficiently longer than the side wall plate 522 of the inner housing 520, and as shown in FIG. 80, the opening 524 formed in the inner housing 520 is formed in the outer housing. The opening 543 formed in 540 is slightly lowered in the depth direction and opens.

The top plate 541 has an outside air inlet 544.
Are formed. The outside air introduction port 544 is an opening for taking in air outside the housing 508 (outside air) into the housing 508 as necessary. A dust collection filter 545 for removing dust and dirt in the inflowing air and a flow rate adjusting plate 546 for adjusting the flow rate of the outside air flowing into the outside air introducing port 544 are attached to the outside air introducing port 544.

The flow rate adjusting plate 546 is used for the outside air introduction port 5
It is provided slidably toward the inside of 44,
The outside air introduction port 544 has a structure in which the opening area thereof can be arbitrarily adjusted by sliding the flow rate adjusting plate 546 inward.

Further, the inner casing 520 and the outer casing 540 are the expandable and contractible adjuster 5 shown in FIGS. 83 and 84.
They are connected by 70. This adjuster 570
Has a function as a connecting member for positioning the outer housing 540 and the inner housing 520, and also a circulation path 504 formed by the inner housing 520 and the outer housing 540 described above.
It also has the function of varying the passage width (passage cross section). That is, it has a role as a flow rate adjusting mechanism according to the present invention. The flow rate adjusting mechanism (adjuster 570) will be described below with reference to FIGS. 83 and 84.

As shown in FIG. 84, the adjuster 570 includes a boss 571 welded to the top plate 541 of the outer casing 540 via a stay 75, a bolt 572 screwed into the boss 571, and a bolt 572. An operation handle 573 for rotating the bolt 572 is provided, and a tip end portion of the bolt 572 is rotatably connected to the top plate 521 of the internal housing 520.

Further, at each corner of the inner casing 520, a guide rail 574 having an L-shaped cross section supported by the side wall plate 542 of the outer casing 540 is provided. Then, when the adjuster 570 is operated, the internal housing 2 moves along the guide rail 574 in the depth direction thereof.

The relative positional relationship between the inner casing 520 and the outer casing 540 is determined according to the rotating direction of the operation handle 573. That is, when the operation handle 573 is rotated in the arrow R direction in FIG. 84, the inner housing 520 is separated from the outer housing 540 (arrow R1 direction in FIG. 84), while the operation handle 573 is moved in the arrow L direction in FIG. When rotated, the inner housing 520 approaches the outer housing 540 side (arrow R1 direction in FIG. 84) (arrow L1 direction in FIG. 84). By thus providing the expandable / contractible adjuster 570 between the outer housing 540 and the inner housing 520, the circulation path 5 formed between the outer housing 540 and the inner housing 520 is formed.
It is possible to arbitrarily change the passage width (passage cross section) 04.

Next, the support rack 501B that supports the above-mentioned housing 508 will be described.

The support rack 501B facilitates the emission of infrared rays to the coated surface M, and supports the housing 508 (drying apparatus main body 501A) at an arbitrary height and direction.

The support rack 501B is composed of the vertical frame 5
80, a bracket 582 slidably provided in the vertical direction of the vertical frame 580, and the bracket 5
82, a horizontal frame 583 held slidably in the horizontal direction, and a housing 508 extending from the horizontal frame 583.
And a support arm 584 that swingably supports the.

A balance weight 585 is provided inside the vertical frame 580 to reduce the force required to move the casing 508 up and down. More specifically, as shown in FIG. 76, a chain 587 having one end fixed to the crown of the vertical frame 580 and the other end connected to the bracket 582.
A balance weight 585 that is vertically movable in the vertical frame 580, a movable pulley 586 attached to the balance weight 585, and a vertical frame 580.
76, the chain 587 includes a fixed pulley 581 and a fixed pulley 581. The movable pulley 586 and the fixed pulley 581 are provided between the bracket 582 and the chain 587.
And a top of the vertical frame 580.

The pulleys 107 are provided between the balance weight 585 and the horizontal frame 583 including the complete housing.
A boosting action occurs due to the arrangement of a and 101a. Therefore, if the weight of the balance weight is set to 1/2 of the total weight of the horizontal frame including the set of the housing 508, the balance weight 585 and the horizontal frame 5 including the set of the housing 508 are set.
The weight 83 is balanced, and the vertical movement of the housing 508 is facilitated.

A bottom frame 588 is connected to the lower end of the vertical frame 580, and casters 589 are provided at the four corners of the bottom frame 588.
Therefore, the device 1 can be freely moved within the repair shop.

Although the present invention has been described as a drying device in this embodiment, the drying device of this embodiment is of course useful in other applications. Further, the structure of the drying device main body 501A and the structure of the support rack 501B described above are merely examples of the present embodiment, and the details thereof may be arbitrarily changed.

For example, in the above-described third drying device 501, the adjuster 570 is used to set the air circulation rate in the housing 508, but it is detached between the inner housing 520 and the outer housing 540. It is also possible to change the air circulation rate in the housing 508 by interposing a free spacer and appropriately changing the thickness of the spacer as desired. In addition, a strip-shaped valve element is provided in the gap formed between the inner casing 520 and the outer casing 540, and the valve body is operated to adjust the flow rate of the air flowing through the circulation path 504. Good.

In this embodiment, the infrared lamp 502 is used as the infrared radiation device, but an infrared heater or the like may be used instead of the infrared lamp 502. Further, although the infrared lamp 502 is arranged in a plane parallel to the top plate 521 as described above, for example, a planar infrared heater or the like is arranged on the inner wall surface of the inner housing 520 to radiate infrared rays. May be formed. In addition, the internal housing 5
The inner wall surface of 20 may be embossed to enhance the infrared reflection efficiency. Next, the control system will be described.

The control system includes an inverter (DC / AC converter), timer, CPU (microprocessor), R
OM (Read Only Memory), RAM (Random
Access memory), a temperature sensor 506 (thermocouple), etc., and sequence control of the infrared lamp 502 and the electric fan 503 based on the passage of time, and the electric fan 50.
The feedback control related to the air volume adjustment of No. 3 is performed. In addition, the inverter, timer, C
Various parts such as PU are housed in the control box 10 fixed to the support rack 501B. Further, the temperature sensor 506 is attached to the opening 543 (edge) of the external housing 540.

Hereinafter, the drying apparatus main body 501A (case 50
The sequence control (automatic control) performed by the control system and the flow of air formed in the housing 508 will be described in detail based on the usage method 8). Note that FIG.
6 shows a flowchart of sequence control executed by the control system.

[0460] The third vehicle drying device 50 shown in this embodiment.
No. 1 is used in a state where the opening is close to the painted surface M as shown in FIG. When the coated surface P is dried, the first thing to do is to operate the flow rate adjusting plate 546 provided in the outside air inlet 544 to adjust the flow rate of air taken into the housing 508 from the outside air inlet 544. I do.

In the operation of the flow rate adjusting plate 546, the opening area of the outside air introduction port 544 is determined in consideration of the room temperature. That is, when the indoor temperature is high such as in summer, the flow rate adjusting plate 546 is opened to increase the inflow amount of the outside air, and when the indoor temperature is low such as in the winter period, the flow rate adjusting plate 546 is closed to reduce the inflow amount of the outside air, and the housing 508 is closed. Adjust the temperature inside.

Next, the adjuster 570 is operated to adjust the passage width W of the circulation passage 504. That is, in this step, the adjuster 570 is operated to set the air circulation rate in the housing 508 to a desired value.

The circulation rate is set in consideration of the properties of the coating material applied to the coating surface M. For example, in a paint having a small solvent content and in which the solvent in the paint is completely vaporized in a relatively short time, the passage width is increased and the temperature of the circulating flow is set higher. In addition, when a paint with a high solvent content that requires a long time for the solvent to volatilize is applied, the passage width should be narrowed and the temperature of the circulation flow should be set lower so that the circulation is suitable for the characteristics of each paint. Set to rate.

The optimum circulation rate for the paint can be generally known through various preliminary experiments. Therefore,
If the worker sets the passage width based on the result of this preliminary experiment, an appropriate circulation rate can be obtained even for a worker who is unfamiliar with the operation of the third drying device 501 according to the present embodiment.

As a subsequent operation of the drying apparatus main body 501A, first, a timer is operated to set the lighting time of the infrared lamp 502. That is, the infrared radiation time to the painted surface M is determined by a timer (step 3
01). Next, the lighting switch 1 of the infrared lamp 502
When the infrared lamp 502 is turned on by operating 0d, the timer starts counting (steps 302 and 303).

Here, the infrared rays emitted when the infrared lamp 502 is turned on are emitted to the coated surface M through the opening 524. At this time, the infrared rays emitted from the infrared lamp 502 are diffusely reflected inside the internal housing 520, and the coated surface M
It will be radiated with a uniform intensity throughout. Further, the coated surface M that has received the infrared radiation absorbs the infrared radiation energy, and heating is first started from the inside of the coated surface M.

Subsequently, in the control system, the infrared lamp 502
Whether or not the radiant intensity of has reached a predetermined intensity is determined based on the elapsed time from when the infrared lamp is turned on (step 30).
4). That is, in response to the count of the timer reaching the predetermined time, the CPU determines that the infrared lamp 502 has reached the predetermined intensity, and proceeds to step 305 to operate the electric fan 503. Also, step 304
In the above, when the predetermined time is not reached yet, it is considered that the radiation intensity of the infrared lamp 502 has not reached the predetermined intensity, and the infrared lamp 502 is continuously preheated (warmed up).

[0468] In the following step 305, the electric fan 5
03, and the air behind the internal housing 520 is blown to the coated surface M through the air introduction port 525. In step 305, the air volume of the electric fan 503 is adjusted based on the output value of the temperature sensor 506 supported near the coated surface P.

At this time, on the coated surface M, the solvent vaporized by absorbing the radiant energy of the infrared rays immediately becomes the coated surface M by the wind generated by the electric fan 503.
It is diffused from the surface. As a result, on the coated surface M,
The subsequent evaporation of the solvent is promoted.

Subsequently, in step 306, the electric fan 5
At about the same time as the operation of 03, electric power is supplied to the electric motor that swings the rectifying plate 527 to rotate the rectifying plate 527.
Swing. Therefore, the air blown to the painted surface P by the electric fan 503 is uniformly blown to the entire painted surface P.

The air blown to the coating surface P moves along the coating surface M, passes between the coating surface M and the housing 508, and is discharged to the outside of the housing 508. As described above, the circulation path 504 is provided between the outer housing 540 and the inner housing 520.
(Predetermined gap) is formed. Therefore, the housing 508
The air in the internal housing 520 that is about to be discharged to the outside is
A part of the fluid flows into the circulation path 504 and is guided to the back of the internal housing 520.

Then, this air is sucked again by the electric fan 503 together with the air flowing in from the outside air introduction port 544, and is blown to the coated surface M side. That is, along with the operation of the electric fan 503, the electric fan 503 → the painted surface M →
Circulation path 504 → behind inner casing 520 → electric fan 503
→ A circulating flow that follows the path of the painted surface P is formed in the housing 508.

The circulating flow formed in the housing 2 absorbs the radiant heat from the coated surface M and the thermal energy radiated from the infrared lamp and gradually rises in temperature.
The air that is blown again to the coated surface M through the
Since the air is mixed with the air (outside air) sucked from 44, its temperature is lowered. As a result, the temperature of the air re-blowing on the coated surface P is maintained at substantially the same temperature as the temperature of the air previously blown, and unnecessary coating due to an excessive temperature rise of the coated surface M is caused. Film formation can be avoided.

More specifically, the flow rate of the air that flows down the circulation path 504 and is supplied to the electric fan 503 is limited by the adjustment of the adjuster 570 as described above. That is, when the adjuster 570 is contracted, the outside air introduction port 5
The amount of air supplied via 44 increases, and the temperature of the air blown to the coated surface M naturally lowers. As described above, in the third drying device 501 according to the present embodiment, the casing 5 is adjusted by operating the adjuster 570 to adjust the air circulation rate.
It is possible to keep the temperature in 08 substantially constant.

On the other hand, when the adjuster 570 is extended to increase the passage width W, the circulation rate in the housing 2 increases, and as a result, the amount of air supplied to the electric fan 503 through the circulation passage 504 and the outside air introduction port. The ratio of the amount of air supplied through 544 increases the ratio of the amount of air supplied through circulation path 504, and the temperature of the air blown to coated surface M increases.

Next, the CPU determines whether or not the elapsed time counted by the timer has reached a predetermined time (step 307), and when it is determined that the timer count has reached the predetermined time, the coated surface The infrared lamp 502 is considered to be dry and the infrared lamp 502 is turned off (step 30).
8). If it is determined in step 307 that the predetermined time has not yet been reached, infrared rays are continuously emitted to the coated surface M. That is, in step 307, the dryness of the coated surface M is grasped by using the count of the timer as a trigger.

In the CPU, after turning off the infrared lamp 502, the electric fan 503 is continuously operated for a predetermined time to cool the infrared lamp 502 (step 3).
09), the power supplied to the electric fan 503 is shut off (step 310).

As described above, in the third drying device 501 shown in this embodiment, the infrared rays emitted from the infrared lamp 502 act uniformly on the entire coated surface M while being diffusely reflected inside the housing 508. Further, the infrared rays heat the coated surface M from the inner side thereof, and as a result, the binding of the pigment is promoted inside the coated surface P, and at the same time, the solvent contained in the coating material is promptly transferred to the outside of the coated surface P. And volatilize.

At this time, the solvent that volatilizes vigorously from the paint is quickly diffused by the circulating flow created by the electric fan 503. Further, the air circulating in the housing 508 absorbs radiant heat of the painted surface and the like and gradually rises in temperature. The excessive temperature rise of the air blown to the coated surface M is avoided. Therefore, unnecessary heating (drying) of the coated surface is prevented, and ideal drying conditions are obtained.

[0480]

According to the method for repairing a painted surface of a vehicle of the present invention, it is possible to provide a method for repairing a painted surface of a vehicle which uses an ultraviolet curable resin having an excellent quick-drying property to achieve a good finish and greatly reduce the working time. Is possible.

According to the method for repairing a painted surface of a vehicle of the present embodiment, a resin composition for putty and a primer surfacer for repairing a painted surface of a vehicle, which is made of an ultraviolet curable resin having excellent quick-drying property, reactivity and good usability. It is also possible to provide a resin composition and a coating material to be used in the top coating operation.

Furthermore, according to the method for repairing a vehicle coated surface of the present embodiment, it is possible to provide a drying device for efficiently drying and curing the ultraviolet curable resin or the thermosetting resin.

[Brief description of drawings]

FIG. 1 is a diagram showing a flow of steps in a specific example of repairing a vehicle painted surface by the repair method of the present embodiment.

FIG. 2 is a diagram showing a spectral energy distribution of irradiation light of an example of an ultraviolet irradiation device used in the repair method of the present embodiment.

FIG. 3 is a front view showing the vehicle repair apparatus according to the first embodiment of the present embodiment.

FIG. 4 is a side view showing the vehicle repair apparatus according to the first embodiment of the present embodiment.

FIG. 5 is a diagram showing a lower surface side of a holding plate of the drying device used in the first embodiment of the present embodiment.

FIG. 6 is a diagram showing an upper surface side of a holding plate of the drying device used in the first embodiment of the present embodiment.

FIG. 7 is a front view showing a state where the drying apparatus used in the first embodiment of the present embodiment is supported by a support rack.

FIG. 8 is a side view showing a state where the drying apparatus used in the first embodiment of the present embodiment is supported by a support rack.

FIG. 9 is a plan view showing a state where the drying apparatus used in the first embodiment of the present embodiment is supported by a support rack.

FIG. 10 is a control circuit diagram of the drying device used in the first embodiment of the present embodiment.

FIG. 11 is a graph showing the control of the drying device used in the first embodiment of the present embodiment.

FIG. 12 is an exploded perspective view of a first polishing tool used in the first embodiment of the present embodiment.

FIG. 13 is a polishing apparatus equipped with a first polishing tool used in the first embodiment of the present embodiment.

FIG. 14 is a front view of a first polishing tool used in the first embodiment of the present embodiment.

FIG. 15 is a view showing a polishing plate of a first polishing tool used in the first embodiment of the present embodiment.

FIG. 16 is a sectional view taken along the line CC ′ of the first polishing tool used in the first embodiment of the present embodiment.

FIG. 17 is an AA ′ end view of the first polishing tool used in the first embodiment of the present embodiment.

FIG. 18 is a BB ′ end view of the first polishing tool used in the first embodiment of the present embodiment.

FIG. 19 is a view showing a usage state of the first polishing tool used in the first embodiment of the present embodiment.

FIG. 20 is a perspective view showing a second polishing tool used in the first embodiment of the present embodiment.

FIG. 21 is a side view of a second polishing tool used in the first embodiment of the present embodiment.

FIG. 22 is a front view of a second polishing tool used in the first embodiment of the present embodiment.

FIG. 23 is a top view showing a substrate portion of a second polishing tool used in the first embodiment of the present embodiment.

FIG. 24 is an enlarged view of a main part of a substrate part of a second polishing tool used in the first embodiment of the present embodiment.

FIG. 25 is a view showing a relative positional relationship between the elastic member and the dust collecting hole of the second polishing tool used in the first embodiment of the present embodiment.

FIG. 26 is an enlarged view of the substrate portion in the use state of the second polishing tool used in the first embodiment of the present embodiment.

FIG. 27 is an enlarged view of the substrate portion in the use state of the second polishing tool used in the first embodiment of the present embodiment.

FIG. 28 shows a sectional view of the spray gun according to the present embodiment.

FIG. 29 is an enlarged cross-sectional view of a main part of the spray gun according to this embodiment.

FIG. 30 is an enlarged cross-sectional view of the main parts of the paint injection nozzle according to the present embodiment.

FIG. 31 is an enlarged view of a main part of the needle valve according to the present embodiment.

FIG. 32 is an enlarged partial cross-sectional view of a main part of a paint injection nozzle and a needle valve according to the present embodiment.

FIG. 33 shows a front view of a coil spring according to the present embodiment.

FIG. 34 is a cross-sectional view when the trigger portion of the spray gun according to the present embodiment is operated.

FIG. 35 is a cross-sectional view when the trigger of the spray gun according to the present embodiment is operated.

FIG. 36 shows the state of the mesh on the coated surface.

FIG. 37 is a graph showing the results of measuring the thickness of a coating film formed by a conventional spray gun.

FIG. 38 is a graph showing the results of determining the thickness of a coating film formed by the spray gun of this embodiment.

FIG. 39 is a graph showing a comparison of coating film thicknesses between the spray gun of this embodiment and a conventional spray gun.

FIG. 40 is an enlarged view of a main part of a conventional needle valve.

FIG. 41 is an enlarged partial cross-sectional view of essential parts of a conventional paint injection nozzle and needle valve.

42 is an exploded perspective view showing a third polishing tool used in the first embodiment of the present embodiment. FIG.

FIG. 43 is a front view of the base member of the third polishing tool used in the first embodiment of the present embodiment.

FIG. 44 is a bottom view of the base member of the third polishing tool used in the first embodiment of the present embodiment.

FIG. 45 is a plan view of the elastic member of the third polishing tool used in the first embodiment of the embodiment.

FIG. 46 is a side view of the elastic member of the third polishing tool used in the first embodiment of the present embodiment.

FIG. 47 is a plan view of a polishing member of a third polishing tool used in the first embodiment of the present embodiment.

FIG. 48 is a side view of the polishing member of the third polishing tool used in the first embodiment of the present embodiment.

FIG. 49 is a plan view of the impact absorbing member of the third polishing tool used in the first embodiment of the present embodiment.

50 is a side view of the impact absorbing member of the third polishing tool used in the first embodiment of the present embodiment. FIG.

FIG. 51 is a view showing an initial operation state of the third polishing tool used in the first embodiment of the present embodiment.

FIG. 52 is a view showing an operating state of the third polishing tool used in the first embodiment of the present embodiment.

FIG. 53 shows a steel plate cross section in the case of using the first drying apparatus of the primer surfacer drying / curing test in the second embodiment of the present embodiment.

FIG. 54 shows a steel plate cross section in the case of using the conventional first drying apparatus of the primer surfacer drying / curing test in the second embodiment of the present embodiment.

FIG. 55 shows a steel plate cross section in the case where the conventional drying apparatus B of the primer surfacer drying / curing test in the second embodiment of the present embodiment is used.

FIG. 56 shows a steel plate cross section in the case of using the conventional drying apparatus C of the primer surfacer drying / curing test in the second embodiment of the present embodiment.

FIG. 57 is a graph showing a transition of drying / curing of a clear coated surface when the first drying device of the clear drying / curing test in the second embodiment of the present embodiment is used.

FIG. 58 is a graph showing a transition of drying / curing of a clear coated surface when a conventional drying apparatus C of a clear drying / curing test in the second embodiment of the present embodiment is used.

FIG. 59 is a graph showing a transition of drying / curing of a clear coated surface when a conventional drying device D of a clear drying / curing test in the second embodiment of the present embodiment is used.

FIG. 60 is a perspective view of a drying device used in a third embodiment of the present embodiment.

FIG. 61 is a schematic view showing a slide mechanism of the drying device used in the third embodiment of the present embodiment.

62 is an enlarged view of a main part at a point A in FIG. 61.

FIG. 63 is a perspective view of the drying device used in the third embodiment of the present embodiment when the arm frame is rotated.

64 is an enlarged view of a main part at point B in FIG. 61.

FIG. 65 is a schematic configuration diagram showing an outline of a slide mechanism provided in the frame.

66 is an enlarged view of an essential part of the movable portion at point C in FIG. 61 seen from the side of the arm frame.

67 is an enlarged view of a main part of the movable portion at point C in FIG. 61 seen from the front side of the arm frame.

FIG. 68 is a flowchart showing the drying operation of the drying device used in the third embodiment of the present embodiment.

FIG. 69 is a flowchart showing the drying operation of the drying device used in the third embodiment of the present embodiment.

FIG. 70 is a flowchart showing the drying operation of the drying device used in the third embodiment of the present embodiment.

FIG. 71 is a flowchart relating to control of movable parts of the drying device used in the third embodiment of the present embodiment.

FIG. 72 is a flowchart relating to control of the movable part of the drying device used in the third embodiment of the present embodiment.

FIG. 73 is a diagram showing changes in the support angle of the drying device with respect to the coated surface.

FIG. 74 is a diagram showing a trajectory of a drying device with respect to a coated surface.

FIG. 75 is a diagram showing a trajectory of a drying device with respect to a coated surface.

FIG. 76 is a side view of the vehicular drying apparatus of the drying apparatus used in the fourth embodiment of the present embodiment.

77 is a front view of the drying device used in the fourth embodiment of the present embodiment. FIG.

FIG. 78 is a plan view of the drying device used in the fourth embodiment of the present embodiment.

FIG. 79 is a perspective view of the drying device used in the fourth embodiment of the present embodiment as seen from the opening side.

80 is a cross-sectional view taken along the line A-A ′ in FIG. 77.

FIG. 81 is a view for explaining the flow of air in the infrared drying device of the drying device used in the fourth embodiment of the present embodiment.

FIG. 82 is a diagram showing a correlation between an emission spectrum of an infrared lamp of a drying device used in a fourth embodiment of the present embodiment and an absorption spectrum of a typical paint.

83 is a rear view of the drying device used in the fourth embodiment of the present embodiment. FIG.

FIG. 84 is a partial cross-sectional view of the adjuster of the drying device used in the fourth embodiment of the present embodiment.

FIG. 85 is a view showing a usage state of the drying apparatus used in the fourth embodiment of the present embodiment.

FIG. 86 is a flowchart for explaining sequence control executed in the control system.

[Explanation of symbols]

1 Top Plate 1a Vent 2 Sidewall 2a Exhaust 2b Vent 3 Housing 3a Opening 4 UV Lamp (UV Irradiator) 5 IR Heater (Infrared Irradiator) 4a Ultraviolet Irradiator 4b Reflector 5a Infrared Irradiator 5b Reflector 6 Protective boot 6a Vent 7 Blower 8 Terminal box 9 Partition 9a Exhaust 9b Protective glass 10, 21, 52 Holding plate 10a Lower surface 10b Upper surface 10c Vent 13 Support rack 14 Vertical frame 15 Horizontal frame 100 First dryer Main body 20, 51 Substrate 22 Rotating substrate 23 Movable substrate 24, 53, 98 Elastic member 25 Polishing surface 26 Polishing plate 27 Adhesive sheet 29 First cutting line 30 Second cutting line 31 First dust collecting hole 32 Second collection Dust hole 33 Third dust collecting hole 34 First supporting member 35 Second supporting member 36 Side wall member 37 Hard fan-shaped sponge 38 Gap 39 Mandrel 40 Columnar shape Hard sponge 41, 70 Coil spring 42 Circular panel 44 Dust collecting passage 45 Suction hole 47 Rotating shaft 49 First polishing tool 54 First polishing member 55 Second polishing member 57 Bolt insertion hole 58 Dust collection port 61 Adhesive sheet 62 Cutting Groove 63 Dust collection hole 64 First support member 65 Second support member 67 Removal portion 69 Mounting bolt 80 Second polishing tool 91 Third polishing tool (polisher) 92 Screw part 93 Rotating shaft 94 Mounting surface 95 Convex part 96 Base member 97 peripheral edge 98 elastic member 99, 139, 149, 159, 169 groove 210 opening edge 211 polishing member 212 pad 213 shock absorbing member 214 steel plate 215 primer 216 surfacer 217 paint 219 drive device 220 gripping portions 230a, 230b, 240a, 240b, 250a,
250b Arc 301 Spray gun (coating device) 302 Compressed air supply passage 303 Paint supply passage 304 Spray gun main body 305, 350 Paint injection nozzle 306, 360 Needle valve 307 Grip 308, 380 Injection port 309 Air nipple 310 Air valve 311 Coil spring 312 Air packing 314 Tip part 315 Needle valve guide 316 Coil spring 317 Needle packing 318 Adjusting screw 319 Paint joint 320 Paint container 321 Barrel part 322 Trigger part 323 Air cap 324 Through hole 325 Slit 326 First taper part 327, 340 Second taper Parts 328, 390 First linear part (tapered part) 329 Guide chamber 330 Rotation center 331 Third tapered part 332 Second linear part 401 Support rack 402, 580 Vertical frame 403, 583 Horizontal frame 404 Arm frame 405 Drying device 406 Base frame 406a Wheel (caster) 407 Control box 408 Second drying device 410 Operation unit 411 Horizontal frame support rod 412 Horizontal frame main body 413 Fixed gear 414 Worm gear 415, 423, 434, 447 Drive motor 416 Connection block 417, 438, 444, 495 Rotation angle sensor 420 Support 421 Connection frame 422, 587 Chain 424 Sprocket 425 Pulley 426, 582 Bracket 427, 437, 446, 574 Guide rail 428 Slot 429, 436, 445 Roller 431, 441 Guide pulleys 432, 442 Drive pulleys 433, 443 Belts 435, 448 Frame connecting plate 451 Housing 451a Opening 452 Infrared irradiation unit 452a IR (infrared) heater 453 Blower 454 Ultraviolet irradiation unit 454a UV lamp 455 Distance detection sensor 456 Dry state detection sensor 490 Rotating shaft 491 Reduction gear 492 Pinion gear 493 Drive motor 494 Stay 494a Stay body 494b Arm 494c Connecting bolt 501 Third dry Device 501A Drying device main body 501B Support rack 502 Infrared lamp 503 Electric fan 504 Circulation path 506 Temperature sensor 508 Housing 520 Inner housing 521 Top plate 522 Side wall plate 523 Reflecting plates 524, 543 Opening part 525 Air introducing port 527 Rectification Plate 540 External housing 541 Top plate 542 Side wall plate 544 Outside air inlet 545 Dust collection filter 546 Flow rate adjusting plate 570 Adjuster 571 Boss 572 Bolt 573 Operation handle 581 Fixed pulley 584 Support Arm 585 Balance weight 586 Movable pulley 588 Bottom frame 589 Castor 630 Bracket 631 Shaft 632 Locator 633 Handle 624 Power supply 623 Lighting circuit 620, 621, 622 Current relay S Drive device D1 Surface D2 of putty filled in damaged area N Polished Putty surface R Both angles T Base end P Putty M Coating surface D Door panel A Drying start point E Drying end point Q Coating surface J Primer surfacer layer

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁷ Identification code FI theme code (reference) B24B 23/02 B24B 23/02 4F042 23/04 23/04 B60S 5/00 B60S 5/00 F26B 3/30 F26B 3/30 9/00 9/00 C F term (reference) 3C058 AA01 AA09 AA18 AC05 CA01 CB03 3D026 BA22 BA27 BA30 3L113 AC08 AC10 AC11 CA08 CA20 CB05 CB24 4D075 AA04 BB26Y BB26Y BB26Y BB26Y BB26Y BB26Y BB26Y BB26Y BB26Y BB26Z BB26Z BB62X BB91Y BB91Z CA13 CA47 DA06 DA27 DB01 DC11 EA07 EA19 EA21 EA39 EB22 EB24 EB32 EB33 EB35 EB37 EB38 4F033 AA01 BA03 CA01 DA01 EA01 GA02 GA10 QA01 QB02Y QB03X QB12Y QB18 QD02 QD21 QE06 QE13 QE16 4F042 AA09 BA03 BA08 BA13 DA06 DB01 DB18 DB25 DB28 DB31 DB41 DC02

Claims (13)

[Claims] 1. A method for repairing a damaged portion due to irregularities on a vehicle painted surface and / or a coating film defect, wherein the damaged portion, which has been pretreated as necessary, has an ultraviolet-transparent material and / or Filling the putty with a putty made of a UV-polymerizable composition containing an ultraviolet absorbing material to cure the putty, and a step of polishing the surface of the putty filled in the damage place, A coating surface including the surface of the putty that has been polished is uniformly spray-coated with a primer surfacer having a viscosity capable of being spray-coated and made of an ultraviolet-polymerizable composition that can contain an ultraviolet-transparent material and / or an ultraviolet-absorbing material, A step of curing the obtained primer surfacer coating film to form a primer surfacer layer, and applying a paint on the primer surfacer layer obtained in the above step. A process of applying a top coat to cloth and drying the paint,
A method of repairing a painted surface of a vehicle, characterized in that a drying device that irradiates ultraviolet rays is used to dry the putty, the primer surfacer, and the paint. 2. A method for repairing a damaged portion caused by unevenness of a vehicle painted surface and / or a coating film defect, wherein the damaged portion, which has been pretreated as necessary, is made of a thermosetting material. A step of filling the damaged portion with putty by hardening the putty, and a step of polishing the surface of the putty filled in the damaged portion; A step of uniformly spraying a primer surfacer containing a curable material and having a viscosity capable of being sprayed, and curing the primer surfacer coating film obtained to form a primer surfacer layer, and the primer obtained in the above step. A step of applying a top coat on the surfacer layer and drying with infrared rays,
A method of repairing a painted surface of a vehicle, characterized in that a drying device for irradiating infrared rays is used for drying any of the putty, the primer surfacer, and the paint. 3. The method for repairing a painted surface of a vehicle according to claim 2, wherein a drying device for supplying air is used to dry any of the putty, the primer surfacer and the paint. 4. The drying device includes a housing having an opening, an ultraviolet irradiation device having an irradiation unit for irradiating ultraviolet rays provided in the housing, and an infrared irradiation device having an irradiation unit for irradiating infrared rays, A first blower that cools the irradiation part of ultraviolet rays, and a second blower that blows the air warmed by the irradiation part of the infrared rays to the opening side, using a drying device,
The method for repairing a painted surface of a vehicle according to claim 1, wherein the paint applied to the surface of the putty filled in the damaged portion and / or the ground putty is dried. 5. A drying device for drying the coating material applied to the surface of the putty filled in the damaged portion and / or the polished putty is from the drying device to the damaged portion coated with the coating material. A distance detection sensor that detects a distance, and a moving device that moves the drying device along the damaged portion, wherein the moving device has a value detected by the distance detecting sensor within a predetermined range. A moving device for moving the drying device along the damaged part, and drying the paint applied to the surface of the putty filled in the damaged part and / or the polished putty. The method for repairing a painted surface of a vehicle according to any one of claims 1 to 3. 6. A drying device for drying the paint applied to the surface of the putty filled in the damaged portion and / or the ground putty is provided with a casing having an opening at one end surface, and the casing is provided in the casing. At least a part of the radiation portion that radiates infrared rays from the opening to the coating surface and the air in the housing blown to the coating surface through the opening flows into the housing again. A circulating path, an outside air inlet for guiding outside air into the housing, and a flow rate adjusting mechanism for adjusting the flow rate of air re-flowing into the housing through the circulating path, and the putty filled in the damaged portion is provided. And / or the paint applied to the surface of the ground putty is dried, and the method for repairing a vehicle painted surface according to claim 1. 7. In the step of polishing the surface of the putty filled in the damaged portion, a substrate portion holding an abrasive on a surface facing the damaged portion and a substrate portion parallel to the substrate portion with a predetermined space therebetween. A polishing plate provided with a holding plate to which a polishing member for polishing the damaged portion is attached to a predetermined surface, and an elastic member interposed between the substrate unit and the holding plate, the substrate unit, A first polishing member fixed to the holding plate at a predetermined interval, and a second polishing member which is connected to an edge of the first polishing member and which rotates about a connection line with the first polishing member as an axis. And the second polishing member is rotatable in a preset movable range in a direction approaching the holding plate from a position where the second polishing member is flush with the first polishing member. The second polishing member is provided on the details of the damaged portion. 7. The surface of the putty is polished by polishing and by simultaneously using the second polishing member and the first polishing member to make surface contact with the damaged portion. How to repair the painted surface of the vehicle. 8. In the step of forming the primer surfacer layer, after the primer surfacer layer is cured,
A polishing substrate for polishing the surface of the primer surfacer, the polishing surface holding an abrasive is provided on the surface, and the rotating substrate portion rotates itself to polish the damaged portion; A plurality of movable substrate parts, each of which has an abrasive material held therein and which is provided on a peripheral edge of the rotary substrate part, and which is provided with a polishing surface which rotates about a connecting line to the rotary substrate part; and a polishing surface of the movable substrate part. 7. A polishing tool comprising: a biasing unit that biases the substrate in a direction to be flush with the polishing surface of the rotating substrate unit and absorbs an impact transmitted from the movable substrate unit. 1-7
The method for repairing a vehicle painted surface according to any one of 1. 9. A coating device for coating the coating surface with the primer surfacer and the coating material used in the top coating,
A coating device that mixes compressed air and paint, atomizes the paint, and applies it to the surface to be coated, which includes a compressed air supply passage for supplying compressed air and a coating device main body provided with a paint supply passage for supplying paint. A paint injection nozzle provided in the main body of the coating device, the paint injection nozzle having an injection port for injecting paint, and an adjusting unit for opening and closing the injection port to adjust the injection amount of the paint, wherein the adjusting unit is the paint injection unit A needle valve that is slidable inside the nozzle, wherein the needle valve has a tapered tip portion located on the injection port side, and inside the paint injection nozzle, is continuous with the tip portion and has a predetermined length. 9. The method for repairing a painted surface of a vehicle according to claim 1, further comprising at least one linear portion having a. 10. The method for repairing a painted surface of a vehicle according to claim 9, wherein the linear portion is a tapered portion whose diameter increases from the spray port toward the paint spray nozzle. 11. A base member, which is rotationally driven by a driving device and has a mounting surface orthogonal to its rotation axis, in a top-coating step of applying a predetermined coating material to the damaged portion, and the base member is provided so as to face the base member. And a polishing member that polishes the damaged portion, and an elastic member that is interposed between the base member and the polishing member and that absorbs an impact generated when the polishing member polishes the damaged portion. The elastic member has a groove portion that is open to the polishing member side and extends in the peripheral direction from the center of the elastic member, and the opening edge of the groove portion is a straight line extending from the center of the elastic member toward the peripheral edge. The surface coated with the coating material on the damaged portion is polished using a polishing tool that is
10. The method for repairing a vehicle painted surface according to any one of 10. 12. The method for repairing a painted surface of a vehicle according to claim 11, wherein the polishing tool is a polishing tool used in the step of polishing the surface of the putty filled in the damaged portion. 13. The method for repairing a painted surface of a vehicle according to claim 11, wherein the polishing tool is a polishing tool used for polishing the surface of the primer surfacer in the step of forming the primer surfacer layer. .