JP4174005B2 - Coating device for protective layer forming material - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a coating device for a protective layer forming material for coating a protective layer forming material on an outer surface mainly of a painted portion of a vehicle that has been painted, and in particular, a liquid protective layer that acts as a peelable protective layer after drying. The present invention relates to a coating device for a protective layer forming material for applying a forming material.
[0002]
[Prior art]
Vehicles such as automobiles are often stored in an outdoor stockyard before being handed to the user after manufacture, or are transported by trailers, ships, and the like. During this time, since the vehicle is exposed to dust, metal powder, salt, oil, acid, direct sunlight, etc., during the long-term storage and transportation, the surface layer of the plurality of coating layers on the outer surface of the vehicle 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 in a stage before vehicle shipment (see, for example, Patent Document 1). The peelable protective layer is formed by applying and drying a protective layer forming material (also called a strippable paint) that is a liquid wrap material, and can protect the painted part. Moreover, it can be easily peeled when removed, and does not peel naturally during normal storage.
[0003]
In the step of applying the protective layer forming material before the peelable 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 spreading the protective layer forming material by blowing air after extracting the protective layer forming material on the body in order to automate such work and reduce the burden on the operator and make the coating quality uniform Has been proposed (see, for example, Patent Document 2). According to this method, many of the operations in the coating process of the protective layer forming material are automated, which can reduce the burden on the operator and improve the tact time.
[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 assembly work. For example, the scratch cover is temporarily attached to the front lateral surface of the body and removed before shipping. It is necessary to prepare a scratch cover having a different shape for each vehicle type, and it is also necessary to prepare a large number of scratch covers according to the daily production number in 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, the method disclosed in Patent Document 2 described above is not necessarily uniform in the extent of the protective layer forming material, and is applied to the edge of the roof in order to prevent the protective layer forming material from scattering. Not.
[0008]
Furthermore, recent automobile bodies are becoming more complicated shapes, and some have uneven portions and complicated curved surfaces. It is difficult to spread the protective layer forming material by air nozzles on such uneven portions and curved surfaces. 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 coating thickness when expanding 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 with the roller to the details such as the edge of the roof and the uneven parts and finish the processing. There is. Therefore, a part of the coating process of the protective layer forming material relies on manual work, which is a burden on the worker and varies in coating quality depending on the skill level of the worker.
[0010]
In order to reduce the work of such an operator and make the quality of the work uniform, it is considered to employ an industrial robot and to provide a roller for applying a protective layer forming material to the vehicle on the robot. Is done.
[0011]
By the way, the application surface on which the protective layer forming material is applied has a narrow surface at the end or the like. In order to correspond to such a narrow surface, it is preferable to use a roller having a narrow width. On the other hand, in order to apply the protective layer forming material to a wide surface such as a roof, it can be efficiently applied by using a wide roller. That is, it is preferable to apply a plurality of types of rollers according to the area and width of the application surface, but replacing the rollers each time makes the procedure complicated and practically difficult.
[0012]
The present invention has been made in view of such problems, and a protective layer forming material coating apparatus that can automatically use a roller having an appropriate width according to the area and width of the coating surface is provided. The purpose is to provide.
[0013]
[Means for Solving the Problems]
A coating device for a protective layer forming material according to the present invention is provided near a conveyance line of a vehicle, and includes a robot capable of teaching operation, a first roller and a second roller which are connected to the robot and are rotatable and have the same diameter. A roller mechanism section, a supply mechanism section for supplying a liquid protective layer forming material acting as a peelable protective layer after drying to the first roller and the second roller, an axis of the first roller, and the second roller A roller displacement mechanism for relatively displacing the shaft center of the first roller and the roller displacement mechanism, wherein the roller displacement mechanism is selectable between a state in which the shaft centers of the first roller and the second roller coincide with each other and a state in which they do not coincide with each other. It is characterized by being.
[0014]
As described above, the first roller and the second roller have a configuration in which the axial center of the second roller coincides with the axial center of the second roller, and a state in which the axial centers of the second roller do not coincide with each other. Either one or both of the roller and the second roller can be applied, and can be selectively used according to various application surfaces and types of vehicles.
[0015]
The first roller and the second roller may have different axial lengths. Thereby, when applying the 1st roller, when applying the 2nd roller and when applying both the 1st roller and the 2nd roller, three kinds of application are possible, and the width to apply at once is three kinds It is possible to select from.
[0016]
The roller displacement mechanism may include a first actuator that displaces the first roller and a second actuator that displaces the second roller. Thereby, the first roller and the second roller can be driven by individual actuators, and the control procedure becomes simple.
[0017]
Each of the first actuator and the second actuator may be a pneumatic cylinder. The air that is the driving fluid of the pneumatic cylinder is rich in compressibility, so it can be operated flexibly and easily absorb external force fluctuations, and presses the first roller and the second roller against the surface of the vehicle with an appropriate force. be able to.
[0018]
Further, when an acrylic copolymer agent is used as the material for the protective layer forming material, the painted portion of the vehicle can be more reliably protected and easily removed when removed.
[0019]
DETAILED DESCRIPTION OF THE INVENTION
DESCRIPTION OF EXEMPLARY EMBODIMENTS A protective layer forming material coating apparatus according to the present invention will be described below with reference to FIGS.
[0020]
As shown in FIG. 1, a protective layer forming material coating apparatus 10 according to the present embodiment is provided in an automobile transport line 12 and applies a protective layer forming material to a vehicle 14 that has been painted. To do. The coating apparatus 10 includes three robots 16a, 16b, and 16c that are industrial robots, a control unit 18 that controls the entire system, a tank 20 in which a protective layer forming material is accommodated, and each robot from the tank 20 The coating material pipeline 22 communicates with 16a, 16b, and 16c, and the water pipeline 26 that supplies water from the water supply source 24 to the robots 16a, 16b, and 16c. The robots 16a, 16b, and 16c are controlled by robot controllers 28a, 28b, and 28c connected to the control unit 18, respectively.
[0021]
The robots 16a and 16c are provided on the left hand side in the traveling direction of the vehicle 14 in the transport line 12, and the robot 16b is provided on the right hand side in the traveling direction. Further, the robot 16a is provided in the forward direction, the robot 16b is provided in the middle in the forward direction, and the robot 16c is provided in the rear in the forward direction. The robots 16 a, 16 b and 16 c can move on the slide rail 30 parallel to the transport line 12.
[0022]
A pump 32 is provided in the middle of the coating material pipe line 22 to suck up the protective layer forming material from the tank 20 and supply it to the robots 16a, 16b and 16c. Further, the protective layer forming material is controlled to have an appropriate temperature by a heater and a thermometer (not shown). A roller mechanism 34 to which a protective layer forming material is supplied is provided at the tip of the robots 16a, 16b, and 16c through the coating material conduit 22 and the tubes 23a and 23b at the tips, respectively.
[0023]
The material of the protective layer forming material is mainly composed of an acrylic copolymer agent, and preferably has two kinds of acrylic copolymer parts having different glass transition temperatures. Specifically, for example, the protective layer forming material disclosed in Patent Document 1 may be used. Further, the protective layer forming material can adjust the viscosity by changing the mixing ratio with water and the temperature, and when it is dried, it adheres to the vehicle 14 and becomes dust, metal powder, salt, oil, acid, direct sunlight, etc. Thus, the painted part of the vehicle 14 can be protected chemically and physically. Furthermore, when removing the vehicle 14 at the time of delivery to a user etc., it can be made to peel easily.
[0024]
As shown in FIG. 2, the robots 16 a, 16 b, and 16 c are, for example, industrial multi-joint robots. The base unit 40 and the first arm 42, It has an arm 44 and a third arm 46, and a 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 acts as a so-called end effector. The first arm 42 can be rotated by axes J <b> 1 and J <b> 2 that can be rotated horizontally and vertically with respect to the base portion 40. The second arm 44 is connected to the first arm 42 so as to be rotatable about an axis J3. The second arm 44 can be twisted and rotated by the axis J4. The third arm 46 is connected to the second arm 44 so as to be rotatable about an axis J5. The third arm 46 can be rotated by the axis J6.
[0025]
By such operations of the six-axis robots 16a, 16b and 16c, the roller mechanism 34 connected to the tip can be moved to an arbitrary position in the vicinity of the vehicle 14 and set to an arbitrary direction. Is possible. In other words, the roller mechanism 34 can move with six degrees of freedom. The robots 16a, 16b, and 16c may have an operation unit such as an expansion / contraction operation and a parallel link operation in addition to the rotation operation.
[0026]
As shown in FIGS. 3 and 4, the roller mechanism 34 is attached to the tip of the third arm 46, and has a cylindrical shape and the first roller 48 a made of a material that can absorb and store the protective layer forming material. The second roller 48b and a thrust rotating mechanism 69 as an attachment portion for the third arm 46 of the robot 16a. The first roller 48a and the second roller 48b have the same diameter, and the first roller 48a is longer than the second roller 48b in the axial direction. The thrust rotating mechanism 69 includes a mounting member 70 for the third arm 46, a thrust rotating member 74 that is rotatably supported by the mounting member 70 via a bearing 72, and a thrust rotating member 74 below the thrust rotating member 74. And a roller mechanism base portion 76 attached thereto. Examples of the material of the first and second rollers 48a and 48b include a sponge and a flocked body.
[0027]
The roller mechanism portion 34 includes pneumatic cylinders (roller displacement mechanisms) 78 and 80 provided in parallel to both ends of the roller mechanism base portion 76 and a bracket 82 provided between the pneumatic cylinders 78 and 80. A support shaft 84 supported horizontally by the bracket 82, a holder 86a for holding the first roller 48a, and a holder 86b for holding the second roller 48b. The support shaft 84 is provided at a position that does not intersect the axes of the rod 78 a of the pneumatic cylinder 78 and the rod 80 a of the pneumatic cylinder 80. The pneumatic cylinders 78 and 80 are controlled by the control unit 18.
[0028]
The lower part of the holder 86a supports one end of the first roller 48a in a cantilever manner, and the upper end of the holder 86a is pivotally supported by a rod 78a. The holder 86a is rotatably supported by the support shaft 84 slightly below the upper end.
[0029]
The lower part of the holder 86b supports one end of the second roller 48b in a cantilever manner, and the upper end of the holder 86b is pivotally supported by the rod 80a. The holder 86b is rotatably supported by the support shaft 84 slightly below the upper end.
[0030]
Thus, since the first and second rollers 48a and 48b are connected to the rod 78a and the rod 80a via the holders 86a and 86b, the first and second rollers 48a and 48b can be individually displaced according to the amount of advance and retreat of the rods 78a and 80a. is there. That is, the first and second rollers 48 a and 48 b can be displaced in a direction perpendicular to the axis centered on the support shaft 84. The first roller 48a is displaced in the arrow A1 direction when the rod 78a is retracted, and is displaced in the arrow A2 direction when the rod 78a is extended. The second roller 48b is displaced in the direction of arrow A1 when the rod 80a is retracted, and is displaced in the direction of arrow A2 when the rod 80a is extended.
[0031]
When the rods 78a and 80a have the same advance / retreat amount, the axial centers of the first roller 48a and the second roller 48b coincide with each other and are arranged with almost no gap.
[0032]
One end of the first roller 48a is rotatably held by a holder 86a, and the tube 23a for supplying the protective layer forming material communicates with the inside of the first roller 48a via one end of the holder 86a. Similarly, one end of the second roller 48b is rotatably held by the holder 86b, and the tube 23b for supplying the protective layer forming material communicates with the inside of the first roller 48a via the one end of the holder 86b. Yes. The first roller 48a and the second roller 48b are detachable from the holders 86a and 86b, and can be replaced and maintained.
[0033]
The thrust rotation member 74 is provided with a rotation restricting member 96, and a small protrusion 98 that protrudes downward from the mounting member 70 is disposed in the recess 96 a on the upper surface of the rotation restricting member 96. The width of the small protrusion 98 is slightly smaller than the width of the recess 96a, and the thrust rotating member 74 is rotatable in the thrust direction in the range of the gap. The thrust direction here is a direction orthogonal to the axis of the first and second rollers 48 a and 48 b itself, and is a rotation direction around the axis of the third arm 46.
[0034]
As shown in FIG. 5, a combined hydraulic and pneumatic circuit (supply mechanism unit) 150 for supplying the protective layer forming material to the first and second rollers 48 a and 48 b includes a compressor 152 and a compressor 152. An air tank 154 connected to the discharge unit, a manual pneumatic injection valve 156 that switches between supply and cutoff of air pressure, a regulator 158 that reduces the secondary pressure by an electrical signal supplied from the control unit 18, And a regulator operation valve 160 that is pilot-operated by the secondary pressure of the regulator 158 to reduce the pressure in the coating material pipe line 22. The composite circuit 150 is provided between the MCV (Material Control Valve) 162 connected to the secondary side pipe of the regulator operation valve 160 and the water pipe 26, and the secondary side of the MCV 162 and the first roller 48a. And the trigger valve 164b provided between the secondary side of the MCV 162 and the second roller 48b. In the MCV 162, switching valves 162a and 162b for switching between communication / blocking of the coating material pipe line 22 and the water pipe line 26 are provided, and the secondary sides of the switching valves 162a and 162b communicate with each other. In addition, the broken line of FIG. 5 shows a pneumatic pipe line.
[0035]
The MCV 162, the trigger valves 164a and 164b, and the regulator operation valve 160 are not limited to the pneumatic pilot type, but may be of a driving type such as an electric solenoid.
[0036]
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 injection valve 156, and a trigger switching electromagnetic valve that pilot-operates the trigger valve 164a. 168a and a trigger switching electromagnetic valve 168b that pilot-operates the trigger valve 164b. The MCV switching electromagnetic valve 166 makes one of the switching valves 162a and 162b communicate with each other and shuts off the other by an electric signal supplied from the control unit 18, and switches the water and the protective layer forming material to trigger valves 164a and 164b. To supply. The trigger switching electromagnetic valves 168a and 168b are configured to individually switch the trigger valves 164a and 164b to communication / blocking by an electric signal supplied from the control unit 18, and individually supply water or a protective layer forming material to the first and second rollers 48a and 48b. Supply.
[0037]
Manual stop valves 170 and 172 are provided in the middle of the coating material pipeline 22 and the water pipeline 26, respectively. Normally, the stop valves 170 and 172 are kept in communication. In the composite circuit 150, silencers 174 are provided at the air discharge ports, 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) that prevents an excessive pressure increase.
[0038]
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, and 16c, and other devices are individually provided in the robots 16a, 16b, and 16c. ing.
[0039]
Next, a method of applying the protective layer forming material to the vehicle 14 using the protective layer forming material application apparatus 10 configured as described above will be described.
[0040]
First, the robot 16a, 16b, 16c is taught in advance the operation for applying the protective layer forming material. Specifically, as shown in FIG. 6, the distance between the third arm 46 of the robot 16a and the surface of the vehicle 14 is appropriately maintained, and the inclination angle of the holders 86a and 86b is set to an angle θ at a flat place Pa. The third arm 46 is moved parallel to the surface of the vehicle 14 from the flat point Pa. Further, even in the portion Pb of the shallow concave portion 500 on the surface continuous from the flat portion Pa, it may be moved in parallel with the surface at the flat portion Pa. Further, even at a location Pc of the low convex portion 502 on a surface continuous from the flat location Pa, it may be moved in parallel with the surface at the flat location Pa. As described above, the concave portions 500 and the convex portions 502 may be ignored, and the inclination angles of the holders 86a and 86b may be slightly changed. In this manner, the operation teaching of the robot 16a is facilitated by ignoring the shallow concave portion 500 and the relatively low convex portion 502.
[0041]
Instruct the robots 16a, 16b, and 16c to share the bonnet part 14a (see FIG. 1), the roof front part 14b, and the roof rear part 14c of the vehicle 14, respectively, and apply a protective layer forming material to each responsible part, The taught teaching data is recorded and held in a predetermined recording unit of the control unit 18. When the vehicle 14 is a sedan type, the robot 16c shares the trunk portion.
[0042]
The process of applying the protective layer forming material is taught to end within the tact time set for each vehicle 14 in the transport line 12.
[0043]
Next, the painted vehicle 14 is carried in by the transfer line 12 and stopped near the robots 16a, 16b, and 16c. The controller 18 recognizes that the vehicle 14 has been carried in by a signal or a sensor (not shown) supplied from the transfer line 12 and operates each robot 16a, 16b, 16c based on the teaching data.
[0044]
At this time, the control unit 18 controls the regulator operation valve 160 via the regulator 158 (see FIG. 5) to control the coating material pipe line 22 to an appropriate pressure. Further, the control unit 18 controls the MCV 162 via the MCV switching electromagnetic valve 166 to connect the coating material pipeline 22 and shut off the water pipeline 26. Further, the control unit 18 causes the trigger valves 164a and 164b to communicate with each other by operating the trigger switching electromagnetic valves 168a and 168b. The protective layer forming material is supplied to the first and second rollers 48a and 48b of the roller mechanism 34 while being maintained at an appropriate pressure and temperature by the action of the controller 18, and the first and second rollers 48a and 48b. Appropriate amount oozes out on the surface. In this way, the protective layer forming material can be applied to the vehicle 14. Further, the thickness of the protective layer forming material applied to the vehicle 14 can be adjusted by the pressure control by the regulator 158 and the operation speed of the robots 16a, 16b, and 16c.
[0045]
Furthermore, for example, when the protective layer forming material is applied to the vehicle 14 while moving the robot 16a to the right (see FIG. 6), a relatively weak force Fa is generated in the direction in which the rods 78a and 80a retract. Air is supplied to the pneumatic cylinders 78 and 80. By doing so, the holder 86a and the holder 86b receive a force rotating around the support shaft 84, and the first and second rollers 48a and 48b are pressed against the surface of the vehicle 14 with an appropriate pressing force. The The force Fa may be appropriately adjusted according to the application location and the moving method of the first and second rollers 48a and 48b. Further, the first and second rollers 48 a and 48 b can be brought into close contact with the surface of the vehicle 14 by the action of the thrust rotating mechanism 69.
[0046]
Furthermore, when the protective layer forming material is applied, the controller 18 automatically uses the first and second rollers 48a and 48b depending on the area and width of the application surface of the protective layer forming material. That is, when the protective layer forming material is applied to the application surface having a large area such as the roof rear portion 14c (see FIG. 1), a relatively weak force Fa is generated in the direction in which the rods 78a and 80a contract, Both the first roller 48a and the second roller 48b are pressed against the vehicle 14 and applied. In this case, a width corresponding to the total length of the first roller 48a and the second roller 48b can be applied at a time. For example, if the axial length of the first roller 48a is 300 [mm] and the axial length of the second roller 48b is 100 [mm], a width of 300 + 100 = 400 [mm] at a time is set. Can be applied.
[0047]
In addition, when applying the protective layer forming material to the application surface in a slightly narrow portion like the roof front portion 14b (see FIG. 1), a relatively weak force Fa is generated in the direction in which the rod 78a is retracted, The rod 80a is extended. That is, the axis of the first roller 48a and the axis of the second roller 48b are displaced from each other. As a result, as shown in FIG. 7, the second roller 48b is pulled up, and only the first roller 48a can be used for the application work, and the width of application at a time becomes 300 [mm]. In this case, the trigger valve 164b is shut off, and the supply of the protective layer forming material to the second roller 48b is stopped.
[0048]
Further, when the protective layer forming material is applied to a narrow application surface like the end portion 14e around the sunroof hole 14d (see FIG. 1), a relatively weak force Fa is applied in the direction in which the rod 80a is retracted. At the same time, the rod 78a is extended. That is, also in this case, the axis of the first roller 48a and the axis of the second roller 48b are offset from each other. As a result, as shown in FIG. 8, the first roller 48a is pulled up, and only the second roller 48b can be used for the coating operation, and the width of coating at a time is 100 [mm]. In this case, the trigger valve 164a is shut off, and the supply of the protective layer forming material to the first roller 48a is stopped.
[0049]
Such selection processing of the first roller 48a and the second roller 48b is quickly and automatically performed by the control unit 18 based on the teaching data.
[0050]
The thrust rotation mechanism 69 (see FIG. 3) is a mechanism that rotates the roller mechanism 34 around the axis of the third arm 46, and the rotation center axis of the thrust rotation mechanism 69 is slightly separated from the first roller 48a. Yes. Accordingly, when only the first roller 48a is used, the rotational action of the thrust rotating mechanism 69 on the first roller 48a is insufficient. However, since the first roller 48a has a short length in the axial direction, the first roller 48a easily adheres to the surface of the vehicle 14 even when the thrust rotating mechanism 69 is insufficient, and the protective layer forming material can be reliably applied. it can.
[0051]
Needless to say, the vehicle 14 to which the protective layer forming material is applied may be an unfinished vehicle to which parts and the like are not attached, as long as the coating is finished.
[0052]
The vehicle 14 to which the protective layer forming material is applied by the robots 16a, 16b, and 16c is transported to the next process by the transport line 12. The robots 16a, 16b, and 16c are retracted so as not to interfere with the vehicle 14, and wait until the next vehicle 14 is carried. At this time, the trigger valves 164a and 164b are shut off and the supply of the protective layer forming material is stopped.
[0053]
The applied protective layer forming material is naturally dried or dried while blowing to form a peelable protective layer to protect the painted portion of the vehicle 14.
[0054]
At the end of work or maintenance, the MCV 162 is operated via the MCV switching electromagnetic valve 166 (see FIG. 5) to shut off the switching valve 162a and to connect the switching valve 162b. By doing so, water is supplied from the water conduit 26, and the MCV 162, the trigger valves 164a and 164b, and the first and second rollers 48a and 48b of the roller mechanism 34 can be cleaned.
[0055]
As described above, according to the protective layer forming material coating apparatus 10 according to the present embodiment, the state in which the axial centers of the first roller 48a and the second roller 48b coincide and the state in which the axial centers do not coincide with each other. Since each robot 16a, 16b, 16c is set to an appropriate posture, either one or both of the first and second rollers 48a, 48b are selected according to the area and width of the application surface. Can be applied, and can be used properly according to various types of application surfaces and types of vehicles 14.
[0056]
Further, since the first roller 48a and the second roller 48b have different axial lengths, the first roller 48a, the second roller 48b, and the first roller 48a and the second roller are used. Three applications are possible when both 48b are applied, and the width to be applied at one time can be selected from three types.
[0057]
Further, since the first and second rollers 48a and 48b are driven by pneumatic cylinders 78 and 80 which are individual actuators, the control procedure is simple.
[0058]
The pneumatic cylinders 78 and 80 use flexible air as a driving fluid, and thus can operate flexibly and easily absorb fluctuations in external force. The first and second rollers 48a, 48b can be pressed with an appropriate force.
[0059]
Furthermore, the roller mechanism portion 34 including the first and second rollers 48a and 48b is operated by the robots 16a, 16b and 16c, and the protective layer forming material is supplied to the first and second rollers 48a and 48b, thereby protecting the roller mechanism portion 34. The process of applying the layer forming material can be automated, and the coating quality can be made uniform. In addition, since the process of applying the protective layer forming material by the operator is eliminated by automation, the number of processes can be reduced and the production efficiency can be improved. Moreover, the air conditioning equipment for workers can be omitted. Therefore, it is possible to save energy by reducing the electric power required for air conditioning, improve the environmental resistance, and reduce the operating cost of the factory.
[0060]
The peelable protective layer formed of the protective layer forming material can protect the painted part after shipment of the vehicle 14, but can also protect the painted part even in the factory, and serves as a substitute for the scratch cover. Therefore, a large number of scratch covers having different shapes for each vehicle type can be omitted.
[0061]
In the above-described embodiment, the first and second rollers 48a and 48b are described as being driven by the pneumatic cylinders 78 and 80, which are individual actuators. However, the number of actuators may be one, It is sufficient that the first roller 48a and the second roller 48b have at least two states, that is, a state in which the axis centers of the first roller 48a and the second roller 48b coincide with each other and a state in which they do not coincide.
[0062]
Some of the bumpers of the vehicle 14 are colored and need not be painted, but the protective layer forming material may be applied to a portion other than the painted portion of such a bumper.
[0063]
The coating device for the protective layer forming material according to the present invention is not limited to the above-described embodiment, and it is needless to say that various configurations can be adopted without departing from the gist of the present invention.
[0064]
【The invention's effect】
As described above, according to the coating apparatus for the protective layer forming material according to the present invention, the axial centers of the first roller and the second roller are matched or mismatched, so that the coating surface area and width can be adjusted. Thus, the first roller and the second roller can be automatically used properly. Moreover, when apply | coating a protective layer forming material to a large area, both a 1st roller and a 2nd roller can be used.
[0065]
Furthermore, by using an acrylic copolymer as a material for the protective layer forming material, the vehicle can be more reliably protected and easily removed when removed.
[Brief description of the drawings]
FIG. 1 is a perspective view of a coating device for a protective layer forming material according to the present embodiment.
FIG. 2 is a perspective view of a robot and a roller mechanism provided in the robot.
FIG. 3 is a perspective view of a roller mechanism provided in the robot.
FIG. 4 is a side view of a roller mechanism provided in the robot.
FIG. 5 is a circuit diagram showing a combined circuit of hydraulic pressure and pneumatic pressure.
FIG. 6 is a schematic diagram showing a positional relationship between the robot and the surface of the vehicle in the process of operation of the robot.
FIG. 7 is a front view of the roller mechanism in a state where a short second roller is pulled up.
FIG. 8 is a front view of a roller mechanism portion in a state where a long first roller is pulled up.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 ... Coating apparatus 12 ... Conveyance line 14 ... Vehicle 14a ... Bonnet part 14b ... Roof front part 14c ... Roof rear part 14d ... Sunroof hole 14e ... End part 16a, 16b, 16c ... Robot 18 ... Control part 20 ... Tank 22 ... Application | coating Material pipe line 23a, 23b ... Tube 26 ... Water pipe line 30 ... Slide rail 32 ... Pump 34 ... Roller mechanism 48a, 48b ... Roller 78, 80 ... Pneumatic cylinder 78a, 80a ... Rod 82 ... Bracket 84 ... Support shaft 86a, 86b ... Holder 150 ... Composite circuit 160 ... Regulator operation valve 162 ... MCV
162a, 162b ... switching valve 164a, 164b ... trigger valve 166 ... MCV switching solenoid valve 168a, 168b ... trigger switching solenoid valve

Claims (5)

A robot that is provided near the vehicle transfer line and capable of teaching;
A roller mechanism connected to the robot and having a first roller and a second roller that are rotatable and have the same diameter;
A supply mechanism for supplying a liquid protective layer forming material that acts as a peelable protective layer after drying to the first roller and the second roller;
A roller displacement mechanism for relatively displacing the axis of the first roller and the axis of the second roller;
Have
The apparatus for applying a protective layer forming material, wherein the roller displacement mechanism is capable of selecting a state in which the axial centers of the first roller and the second roller coincide with each other and a state in which they do not coincide with each other. In the coating apparatus of the protective layer forming material of Claim 1,
The protective layer forming material coating apparatus, wherein the first roller and the second roller have different axial lengths. In the coating apparatus of the protective layer forming material of Claim 1 or 2,
The roller displacement mechanism includes a first actuator that displaces the first roller;
A second actuator for displacing the second roller;
An apparatus for applying a protective layer forming material, comprising: In the coating device of the protective layer forming material of Claim 3,
The first actuator and the second actuator are pneumatic cylinders, respectively. In the coating device of the protective layer forming material of any one of Claims 1-4,
The protective layer forming material coating apparatus is characterized in that the material of the protective layer forming material is an acrylic copolymer.

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