JP2004267827A - Apparatus for applying protective layer forming material - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To apply a protective layer forming material by easily bringing a roller into close contact with the outside surface of a vehicle and changing the pressing force of the roller corresponding to a coating place. <P>SOLUTION: A roller mechanism part 34 is provided on the top end part of a robot as an end effector and supports the roller 48 with a plate spring 68. The liquid protective layer forming material acting as a strippable protective layer after drying is supplied from a coating material pipe line 22. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a protective layer forming material coating apparatus for coating a protective layer forming material on an outer surface mainly of a painted portion of a painted vehicle, and in particular, a liquid protective layer acting as a peelable protective layer after drying. The present invention relates to a protective layer forming material application device for applying a forming material.
[0002]
[Prior art]
Vehicles such as automobiles are often stored in outdoor stock yards or transported by trailers, boats, etc. before being handed to a user after manufacturing. During this time, the vehicle is exposed to dust, metal powder, salt, oil, acid, direct sunlight, etc. Quality may be affected. In order to prevent such a situation, a method is known in which a peelable protective layer is formed on a painted portion at a stage before shipment of a vehicle (for example, see Patent Document 1). The peelable protective layer is formed by applying and drying a protective layer forming material (also called a strippable paint), which is a liquid wrap material, and can protect the painted portion. In addition, it can be easily peeled at the time of removal, and does not peel naturally during normal storage.
[0003]
In the step of applying the protective layer forming material before the releasable protective layer is dried, the protective layer forming material is attached to the roller, and a plurality of workers roll the roller to apply the protective layer forming material.
[0004]
A method of extracting such a protective layer forming material on a body and then blowing the air to spread the protective layer forming material in order to automate such work, reduce the burden on the worker, and uniformize the coating quality. Has been proposed (for example, see Patent Document 2). According to this method, much of the work in the step of applying the protective layer forming material is automated, and the burden on the operator can be reduced, and the tact time can be improved, which is preferable.
[0005]
In a factory that produces vehicles, a resin cover called a scratch cover may be temporarily attached so as not to damage the body during the assembling work. The scratch cover is temporarily attached to, for example, a front lateral surface of the body and is removed before shipment. It is necessary to prepare a scratch cover having a different shape for each vehicle type, and further, it is necessary to prepare a large number of scratch covers according to the daily production number on the transfer line.
[0006]
[Patent Document 1]
JP 2001-89697 A (paragraphs [0022] to [0027])
[Patent Document 2]
JP-A-8-173882 (FIG. 1)
[0007]
[Problems to be solved by the invention]
By the way, in the method disclosed in Patent Document 2 described above, the degree of spreading of the protective layer forming material is not always uniform, and the method is applied to the edge of the roof in order to prevent the protective layer forming material from scattering. Not.
[0008]
Furthermore, the body of recent automobiles is becoming more and more complicated, and some have uneven portions and complicated curved surfaces. It is difficult to spread the protective layer forming material on such uneven portions and curved surfaces using an air nozzle. Furthermore, it is necessary to apply a thicker protective layer forming material to places where coating quality is particularly important, but it is difficult to adjust the thickness of the coating film when spreading the protective layer forming material with an air nozzle. It is.
[0009]
For this reason, after spreading the protective layer forming material with the air nozzle, several workers need to apply the protective layer forming material to the details such as the edge and unevenness of the roof with a roller to perform the finishing process. There is. Therefore, the coating process of the protective layer forming material partially relies on manual work, which imposes a burden on the operator, and the coating quality varies depending on the skill of the operator.
[0010]
In order to reduce the work of such workers and to make the quality of the work uniform, it is considered to apply an industrial robot. No suitable roller for applying the toner and its holding device have been proposed. Further, although the body of a recent automobile has a complicated shape as described above, a device that can easily bring the roller into close contact with the unevenness of the body is desired.
[0011]
Furthermore, since the application width of the protective layer forming material, the importance of the coating quality, and the shape of the surface differ depending on the application location, it is desirable that the pressing force of the roller can be adjusted according to the application location.
[0012]
The present invention has been made in consideration of such problems, and further automates a process of applying a protective layer forming material to an outer surface of a vehicle, and easily brings a roller into close contact with an outer surface of a vehicle, and further applies the coating. An object of the present invention is to provide a coating apparatus for a protective layer forming material, which makes it possible to appropriately apply the protective layer forming material while changing the pressing force of the roller according to the location.
[0013]
[Means for Solving the Problems]
An apparatus for applying a protective layer forming material according to the present invention is provided near a transport line of a vehicle, and has a robot capable of performing a teaching operation, a roller mechanism connected to the robot and having a rotatable roller, and peeling after drying. And a supply mechanism for supplying a liquid protective layer forming material acting as a protective layer to the roller, wherein the roller mechanism supports the roller via an elastic body, and the robot includes the elastic body. The roller is pressed against the outer surface of the vehicle while bending.
[0014]
Thus, by supporting the roller via the elastic body, the roller can be easily brought into close contact with the outer surface of the vehicle. Further, by changing the posture of the robot in accordance with the application location, the protective layer forming material can be applied while changing the pressing force of the roller. Thereby, the step of applying the protective layer forming material to the outer surface of the vehicle can be further automated.
[0015]
In this case, if the elastic body is a leaf spring, a torsion spring or a coil spring, a simple and inexpensive configuration can be achieved.
[0016]
When an acrylic copolymer is used as the material of the protective layer forming material, the painted portion of the vehicle can be more securely protected and easily removed when removed.
[0017]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, a preferred embodiment of a coating apparatus for a protective layer forming material according to the present invention will be described with reference to the attached FIGS.
[0018]
As shown in FIGS. 1 and 2, a protective layer forming material applying apparatus 10 according to the present embodiment is provided on a transport line 12 of an automobile, and forms a protective layer on a vehicle 14 on which painting is completed. The material is applied. The coating apparatus 10 includes three robots 16a, 16b, and 16c, which are industrial robots, a control unit 18 that controls the entire system, a tank 20 containing a protective layer forming material, and each robot from the tank 20. It has an application material pipe 22 communicating with 16a, 16b, 16c, and a water pipe 26 for supplying water from a water supply source 24 to the robots 16a, 16b, 16c. The robots 16a, 16b, 16c are controlled by robot controllers 28a, 28b, 28c connected to the control unit 18, respectively.
[0019]
The robots 16a and 16c are provided on the transport line 12 on the left hand side in the traveling direction of the vehicle 14, and the robot 16b is provided on the right hand side in the traveling direction. The robot 16a is provided in the forward direction, the robot 16b is provided in the middle of the travel direction, and the robot 16c is provided in the rear direction. The robots 16a, 16b, 16c can move on a slide rail 30 parallel to the transport line 12.
[0020]
A pump 32 is provided in the middle of the coating material pipeline 22, and sucks the protection layer forming material from the tank 20 and supplies it to the robots 16a, 16b, and 16c. Further, the temperature of the tank 20 and the coating material pipe 22 is controlled by a heater and a thermometer (not shown) to keep the protective layer forming material at an appropriate temperature. A roller mechanism 34 to which the protective layer forming material is supplied by the coating material pipe 22 is provided at the tip of each of the robots 16a, 16b, 16c.
[0021]
The material of the protective layer forming material is mainly composed of an acrylic copolymer agent, and preferably has two acrylic copolymer portions having different glass transition temperatures. Specifically, for example, a protective layer forming material disclosed in Patent Document 1 described above may be used. Further, the viscosity of the protective layer forming material can be adjusted by changing the mixing ratio with water and the temperature, and when the material is dried, it adheres to the vehicle 14 so that dust, metal powder, salt, oil, acid, direct sunlight, etc. Thus, the painted portion of the vehicle 14 can be chemically and physically protected. Further, when removing the vehicle 14 to the user at the time of delivery or the like, the vehicle 14 can be easily peeled off.
[0022]
As shown in FIG. 3, the robots 16a, 16b, 16c are, for example, articulated robots for industrial use, and a base 40, a first arm 42, a second arm 42, An arm 44 and a third arm 46 are provided, and the roller mechanism 34 is provided at the tip of the third arm 46. The roller mechanism 34 is detachable from the third arm 46 and functions as a so-called end effector. The first arm 42 is rotatable about axes J1 and J2 that are horizontally and vertically rotatable with respect to the base 40. The second arm 44 is rotatably connected to the first arm 42 about a shaft J3. The second arm 44 can be twisted and rotated by the axis J4. The third arm 46 is rotatably connected to the second arm 44 about a shaft J5. The third arm 46 can be twisted and rotated by the axis J6.
[0023]
By the operation of the robots 16a, 16b, and 16c having such a six-axis configuration, the roller mechanism unit 34 connected to the distal end can be moved to an arbitrary position near the vehicle 14 and set in an arbitrary direction. It is possible. In other words, the roller mechanism 34 can move in six degrees of freedom. Each of the robots 16a, 16b, and 16c may have an operation unit such as a telescopic operation and a parallel link operation in addition to the rotation operation.
[0024]
As shown in FIG. 4, the roller mechanism 34 is attached to the distal end of the third arm 46, and has a cylindrical roller 48 made of a material capable of absorbing and storing the protective layer forming material. , A first bracket 64 protruding from the third arm 46, a second bracket 66 connected to the pipe 50, and connecting the first bracket 64 and the second bracket 66. And a plurality of leaf springs (elastic bodies) 68. Examples of the material of the roller 48 include a sponge and a flocked body.
[0025]
The leaf spring 68 is fixed to the first bracket 64 and the second bracket 66 with bolts, and the number of the leaf springs 68 can be increased / decreased and replaced. By the action of the leaf spring 68, the roller 48 can be elastically displaced in a direction perpendicular to the axis. Further, the elastic force can be changed by adjusting the number of leaf springs 68.
[0026]
The pipe 50 has a root portion 50a, a bent portion 50b that bends at substantially 90 ° with respect to the root portion 50a, a U-shaped bent portion 50c, and a roller mounting portion 50d on the tip side of the bent portion 50c. The center line of the leaf spring 68 is orthogonal to the roller mounting portion 50d. The pipe 50 is hollow, and the tip of the roller mounting portion 50d is closed. The roller mounting portion 50d is provided with a plurality of small holes.
[0027]
The coating material conduit 22 is connected to the second bracket 66 and communicates with the pipe 50. Therefore, when the protective layer forming material is supplied from the coating material pipe 22, the protective layer forming material oozes through the pipe 50 onto the surface of the roller 48. The roller 48 is detachable from the roller mounting portion 50d, and can be replaced, cleaned, and maintained.
[0028]
As shown in FIG. 5, a combined hydraulic and pneumatic circuit (supply mechanism) 150 for supplying the protective layer forming material to the roller 48 includes a compressor 152 and an air tank connected to a discharge unit of the compressor 152. 154, a manual pneumatic input valve 156 for switching between supply and cutoff of air pressure, a regulator 158 for reducing the secondary pressure by an electric signal supplied from the control unit 18, and a secondary pressure of the regulator 158. And a regulator operating valve 160 that is operated by a pilot to reduce the pressure in the coating material pipeline 22. Further, the composite circuit 150 includes an MCV (Material Control Valve, supply switching valve) 162 to which the secondary pipe and the water pipe 26 of the regulator operating valve 160 are connected, and a valve between the secondary of the MCV 162 and the roller 48. And a trigger valve 164 provided. Inside the MCV 162, there are provided switching valves 162a and 162b for switching between communication and shutoff of the coating material pipeline 22 and the water pipeline 26, and the secondary sides of the switching valves 162a and 162b are in communication. The broken line in FIG. 5 indicates a pneumatic pipeline.
[0029]
The MCV 162, the trigger valve 164, and the regulator operation valve 160 are not limited to the pneumatic pilot type, and may be of a drive type such as an electric solenoid.
[0030]
The composite circuit 150 further includes an MCV switching electromagnetic valve 166 that operates the switching valves 162a and 162b in a pilot manner by switching the air pressure supplied from the pneumatic input valve 156, and a trigger switching electromagnetic valve that pilot-operates the trigger valve 164. 168. The MCV switching electromagnetic valve 166 connects one of the switching valves 162a and 162b and shuts off the other, and switches between water and the protective layer forming material and supplies the same to the trigger valve 164 by an electric signal supplied from the control unit 18. I do. The trigger switching electromagnetic valve 168 switches the trigger valve 164 to the open / closed state by an electric signal supplied from the control unit 18 and supplies the roller 48 with water or a protective layer forming material.
[0031]
In the middle of the coating material pipeline 22 and the water pipeline 26, manual stop valves 170 and 172 are provided, respectively. Usually, stop valves 170 and 172 are kept in communication. In the composite circuit 150, silencers 174 are provided at the air outlets, respectively, to reduce exhaust noise. The compressor 152, the pump 32 and the water supply source 24 are provided with a relief valve (not shown) for preventing an excessive rise in pressure.
[0032]
Note that the compressor 152, the air tank 154, the water supply source 24, and the pump 32 in the composite circuit 150 are common to the robots 16a, 16b, 16c, and the other devices are individually provided for the robots 16a, 16b, 16c. ing.
[0033]
Next, a method of applying the protective layer forming material to the vehicle 14 using the protective layer forming material applying apparatus 10 configured as described above will be described.
[0034]
First, the operation is taught to the robots 16a, 16b, 16c in advance. That is, the robots 16a, 16b, and 16c are instructed to share the bonnet portion 14a (see FIG. 1), the roof central portion 14b, and the roof rear portion 14c of the vehicle 14 and apply the protective layer forming material to each assigned portion. Then, the taught teaching data is recorded and stored in a predetermined recording unit of the control unit 18. When the vehicle 14 is a sedan type, the robot 16c shares a trunk portion.
[0035]
As shown in FIG. 6, the third arm 46 of the robot 16a teaches to be at an appropriate distance from the surface of the vehicle 14, and the leaf spring 68 is appropriately bent, so that the elastic force of the leaf spring 68 48 can be easily pressed against the surface of the vehicle 14. At this time, the third arm 46 may be taught so as to be inclined with respect to the surface of the vehicle 14. The pressing force for pressing the roller 48 against the vehicle 14 can be adjusted by the amount of deflection of the leaf spring 68. For example, in places where coating quality is particularly important, the pressing force may be increased by changing the inclination angle of the third arm 46 to increase the amount of deflection of the leaf spring 68. Thereby, the amount of the protective layer forming material that seeps out of the roller 48 can be increased.
[0036]
The distance between the third arm 46 and the surface of the vehicle 14 is basically maintained at a predetermined height. For example, the shallow concave portion 500 having a depth d and the convex portion 502 having a height d may be ignored. Since the roller 48 can be moved up and down elastically, the roller 48 comes into close contact with the concave portion 500 and the convex portion 502, so that the protective layer forming material can be surely applied. By ignoring the shallow concave portion 500 and the relatively low convex portion 502, the operation teaching of the robot 16a becomes easy.
[0037]
Note that the direction in which the leaf spring 68 is bent is not limited to the direction shown in FIG. 6, and the roller 48 may be bent in the opposite direction to press the roller 48 against the surface of the vehicle 14 as shown in FIG. 7. By using the leaf spring 68 in such a manner that it is bent in both directions, the robot 16a can be advanced in two directions, and the setting of the teaching path is facilitated.
[0038]
The process of applying the protective layer forming material is instructed to be completed within the tact time set for each vehicle 14 on the transport line 12.
[0039]
Next, when applying the protective layer forming material to the vehicle 14, the tank 20 (see FIG. 5) and the coating material pipeline 22 are heated to an appropriate temperature by a predetermined heater, and the compressor 152, the water supply source 24 and The pump 32 is operated. Further, the robots 16a, 16b, and 16c are made to wait at a position where they do not interfere with the vehicle 14, and the pneumatic input valve 156 is communicated.
[0040]
Next, the vehicle 14 on which painting has been completed is carried in by the transport line 12, and stopped near the robots 16a, 16b, and 16c. The control unit 18 recognizes that the vehicle 14 has been loaded by a signal or a sensor (not shown) supplied from the transport line 12, and operates the robots 16a, 16b, and 16c based on the teaching data.
[0041]
At this time, the control unit 18 controls the regulator operation valve 160 via the regulator 158 (see FIG. 5), and controls the application material pipe 22 to an appropriate pressure. Further, the control unit 18 controls the MCV 162 via the MCV switching electromagnetic valve 166 to make the coating material pipe 22 communicate with the water pipe 26. Further, the control unit 18 operates the trigger switching electromagnetic valve 168 to make the trigger valve 164 communicate. The protective layer forming material is supplied to the roller 48 of the roller mechanism 34 while maintaining an appropriate pressure and an appropriate temperature by the operation of the control unit 18, and an appropriate amount of the material exudes on the surface of the roller 48.
[0042]
In this manner, the roller 48 is pressed against the surface of the vehicle 14 with an appropriate pressing force, so that the protective layer forming material can be applied. At this time, since the roller 48 can be passively moved up and down along the surface shape of the vehicle 14, it is possible to apply the protective layer forming material securely and easily in close contact with the concave portion 500 and the convex portion 502. it can. That is, when the roller 48 passes through the concave portion 500 and the convex portion 502, the roller 48 passively expands and contracts according to the depth d of the concave portion 500 and the height d of the convex portion 502.
[0043]
Since the roller 48 is pressed against the surface of the vehicle 14 with an appropriate pressing force, the roller 48 does not idle and does not jump when passing through the concave portion 500 and the convex portion 502. In addition, the protective layer forming material easily exudes from the roller 48.
[0044]
Further, even when the operation of the robot 16a slightly deviates from the predetermined teaching path and the third arm 46 approaches the surface of the vehicle 14 due to an unexpected situation, the roller 48 can move up and down with respect to the surface of the vehicle 14. At the same time, since the pressing force on the surface is adjusted by the amount of deflection of the leaf spring 68, no excessive force is applied to the vehicle 14. Furthermore, the roller mechanism 34 can be configured simply and inexpensively without requiring power.
[0045]
The thickness of the protective layer forming material applied to the vehicle 14 can be adjusted by the pressure control by the regulator 158, the operating speed of the robots 16a, 16b, 16c, the number of leaf springs 68, and the amount of bending.
[0046]
At this time, the vehicle 14 may be an unfinished vehicle to which the components have not been attached, as long as the painting has been completed.
[0047]
The vehicle 14 to which the protective layer forming material has been applied by the robots 16a, 16b, 16c is transported by the transport line 12 to the next step. The robots 16a, 16b, and 16c evacuate to a standby posture that does not interfere with the vehicle 14, and waits until the next vehicle 14 is carried in. At this time, the trigger valve 164 is shut off to stop the supply of the protective layer forming material.
[0048]
The applied protective layer forming material is dried naturally or while being blown to form a peelable protective layer to protect the painted portion of the vehicle 14.
[0049]
Next, first to fourth modified examples of the roller mechanism section 34 will be described with reference to FIGS. In the following description, the same portions as those of the roller mechanism 34 are denoted by the same reference numerals, and detailed description thereof will be omitted.
[0050]
As shown in FIG. 8, a roller mechanism 34 a according to a first modification is configured such that a mounting member 200 for the third arm 46 and a shaft 202 and a torsion spring (elastic body) 204 are attached to the mounting member 200. And an elastic swing unit 206 connected thereto. A holder 208 is connected to a distal end of the elastic swing part 206. Both ends of the roller 48 are held by a holder 208, and the coating material conduit 22 communicates with the inside of the roller 48 via one end of the holder 208. The roller 48 is detachable from the holder 208.
[0051]
With such a configuration, the elastic swing unit 206 and the roller 48 can elastically swing around the shaft 202 by the action of the torsion spring 204.
[0052]
As shown in FIG. 9, a roller mechanism portion 34b according to a second modification includes a mounting member 210 for the third arm 46, an elastic swinging portion 214 pivotally supported by a shaft 212 protruding from the mounting member 210, and , A holder 208 attached to the elastic swing part 214 and the roller 48. The elastic swinging part 214 has two elastic support pieces 214a around the shaft 212, and one end of a coil spring (elastic body) 216 is fixed to each of the elastic support pieces 214a. The other ends of the coil springs 216 are fixed to a part of the mounting member 210, respectively.
[0053]
With such a configuration, the elastic swing portion 214 and the roller 48 can elastically swing around the shaft 212 by the action of the coil spring 216.
[0054]
As shown in FIG. 10, a roller mechanism portion 34 c according to a third modification includes a flat mounting member 220 for the third arm 46 and a bellows portion (elastic body) 222 provided on the lower surface of the mounting member 220. And an elastic swinging portion 224 attached to the bellows portion 222 on the side opposite to the side to which the attachment member 210 is connected, a holder 208 attached to the elastic swinging portion 224, and the roller 48.
[0055]
The bellows part 222 is elastically bendable, and the elastic swing part 224 and the roller 48 are elastically swingable about the bellows part 222.
[0056]
According to these roller mechanism portions 34a to 34c, since the elastic swing portions 206, 214, and 224 can elastically swing, the roller 48 can be appropriately moved with respect to the surface of the vehicle 14 depending on the posture of the robot 16a. It can be pressed by force and easily adhered. Therefore, the same effect as that of the roller mechanism section 34 can be obtained.
[0057]
Next, as shown in FIG. 11, a roller mechanism 34 d according to a fourth modification includes a connecting member 230 and two orthogonal shift bases between the pipe 50 and the third arm 46 in the roller mechanism 34. 232 and 234 are interposed. The coating material pipe 22 is connected to the pipe 50 via a joint 235, and the pipe 50 and the coating material pipe 22 communicate with each other.
[0058]
The connection member 230 connected to the pipe 50 is attached to the shift base 232, and can be elastically slid in the arrow X direction. The shift base 232 is attached to the shift base 234, and can be elastically slid in the arrow Y direction. The shift base 234 is attached to the third arm 46.
[0059]
The shift base 232 has two coil springs (elastic bodies) 236 for urging a part of the connection member 230 from both sides. The connection member 230 is set by the coil spring 236 so as to be located substantially at the center of the movable stroke.
[0060]
The shift base 234 has two coil springs (elastic bodies) 238 for urging a part of the shift base 232 from both sides. The shift base 232 is set by the coil spring 238 so as to be located substantially at the center of a movable stroke.
[0061]
By interposing the shift bases 232 and 234 in this manner, the roller 48 can be elastically slid in the arrow X direction and the arrow Y direction, and eventually, in any direction on a plane substantially parallel to the surface of the vehicle 14. It becomes elastically movable. When the protective layer forming material is applied to the vehicle 14, the direction of the force that the roller 48 receives from the surface of the vehicle 14 may include components in the arrow X direction and the arrow Y direction. In this case, the components in the directions of arrows X and Y of the force received from the surface of vehicle 14 by shift bases 232 and 234 are absorbed by shift bases 232 and 234. Therefore, no excessive external force is applied to the pipe 50, the rollers 48, and the like. Also, no excessive force is applied to the surface of the vehicle 14 as a reaction.
[0062]
Further, when the components in the directions of the arrows X and Y of the force received from the surface of the vehicle 14 are 0, the rollers 48 and the connecting member 230 can be automatically returned to the original positions by the coil springs 236 and 238.
[0063]
Further, by inclining the third arm 46, the roller 48 can be pressed against the surface of the vehicle 14 by the elastic force of the coil springs 236 and 238. Therefore, the same effect as that of the roller mechanism section 34 can be obtained.
[0064]
The roller mechanism 34 and the roller mechanisms 34a, 34b, 34c and 34d, which are modifications thereof, may be used by combining some of their functions. For example, the shift bases 232 and 234 (see FIG. 11) of the roller mechanism 34d may be provided in the roller mechanism 34 (see FIG. 4). Further, the mechanism for holding the roller 48 may use either the pipe 50 (see FIG. 4) or the holder 208 (see FIG. 8).
[0065]
As described above, according to the protective layer forming material coating apparatus 10 according to the present embodiment, the roller mechanisms 34, 34a, 34b, 34c, or 34d including the rollers 48 are operated by the robots 16a, 16b, 16c. By supplying the protective layer forming material to the roller 48, the process of applying the protective layer forming material can be automated, and the coating quality can be made uniform.
[0066]
The roller mechanisms 34, 34a, 34b, 34c, and 34d have a function of pressing the roller 48 against the surface of the vehicle 14 and a function of passively moving the roller 48 up and down according to unevenness. And the protective layer forming material can be applied appropriately.
[0067]
Further, since the step of applying the protective layer forming material by the operator is eliminated by automation, the number of steps can be reduced and the production efficiency can be improved. Furthermore, air conditioning equipment for workers can be omitted. Therefore, energy saving can be achieved by reducing the power required for air conditioning, the environmental resistance can be improved, and the operating cost of the factory can be reduced.
[0068]
The peelable protective layer formed by the protective layer forming material can protect the painted portion after the vehicle 14 is shipped, and can also protect the painted portion in a factory, and can be used as a substitute for a scratch cover. Therefore, it is possible to omit a large number of scratch covers having different shapes for each vehicle type.
[0069]
Some bumpers of the vehicle 14 are colored and do not require painting, but the protective layer forming material may be applied to a portion other than the painted portion such as the bumper.
[0070]
The apparatus for applying a protective layer forming material according to the present invention is not limited to the above-described embodiment, but may adopt various configurations without departing from the gist of the present invention.
[0071]
【The invention's effect】
As described above, according to the protective layer forming material applying apparatus of the present invention, the roller is easily brought into close contact with the outer surface of the vehicle, and the protective layer forming material is changed while changing the pressing force of the roller according to the application location. Can be achieved.
[0072]
Thereby, the step of applying the protective layer forming material to the outer surface of the vehicle can be further automated.
[0073]
Further, by using an acrylic copolymer as a material of the protective layer forming material, the vehicle can be more reliably protected, and moreover, is easily peeled off when removed.
[Brief description of the drawings]
FIG. 1 is a perspective view of an apparatus for applying a protective layer forming material according to the present embodiment.
FIG. 2 is a front view of an apparatus for applying a protective layer forming material according to the present embodiment.
FIG. 3 is a perspective view of a robot and a roller mechanism provided in the robot.
FIG. 4 is an enlarged perspective view of a roller mechanism.
FIG. 5 is a circuit diagram showing a combined hydraulic and pneumatic circuit.
FIG. 6 is a schematic diagram showing a positional relationship between a roller mechanism and a surface of a vehicle in a process of teaching the operation of the robot.
FIG. 7 is a schematic diagram showing a state in which a roller is pressed against a surface of a vehicle by changing a bending direction of a leaf spring.
FIG. 8 is an enlarged perspective view of a roller mechanism according to a first modification.
FIG. 9 is an enlarged perspective view of a roller mechanism according to a second modification.
FIG. 10 is an enlarged perspective view of a roller mechanism according to a third modification.
FIG. 11 is an enlarged perspective view of a roller mechanism according to a fourth modification.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 ... Coating device 12 ... Conveying line 14 ... Vehicle 16a, 16b, 16c ... Robot 18 ... Control part 20 ... Tank 22 ... Coating material pipeline 26 ... Water pipeline 30 ... Slide rail 32 ... Pump 34, 34a, 34b, 34c, 34d: roller mechanism 48: roller 50: pipe 68: leaf spring 204: torsion spring 206, 214, 224: elastic swing unit 208: holder 216, 236, 238: coil spring 222: bellows

Claims (3)

A robot provided near the transport line of the vehicle and capable of teaching operation;
A roller mechanism unit connected to the robot and including a rotatable roller;
A supply mechanism for supplying a liquid protective layer forming material that acts as a peelable protective layer after drying to the roller,
Has,
The roller mechanism supports the roller via an elastic body,
The apparatus for applying a protective layer forming material, wherein the robot presses the roller against an outer surface of the vehicle while bending the elastic body. The coating device for a protective layer forming material according to claim 1,
The said elastic body is a leaf spring, a torsion spring or a coil spring, The coating device of the protective layer forming material characterized by the above-mentioned. The coating device for a protective layer forming material according to claim 1 or 2,
The material for the protective layer forming material is an acrylic copolymer agent.

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