JP4226946B2 - 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 is formed by a roller that is in close contact with the outer surface. The present invention relates to a coating device for a protective layer forming material for coating a material.
[0002]
[Prior art]
Vehicles such as automobiles are often stored in an outdoor stockyard before being handed to a user after manufacture, or are transported by a trailer or a ship. During this time, the vehicle is exposed to dust, metal powder, salt, oil, acid, direct sunlight, etc., so the surface layer of the plurality of coating layers on the outer surface of the vehicle during long-term storage and transportation. The quality of the product may be affected.
[0003]
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.
[0004]
In this case, in the step of applying the protective layer forming material, the protective layer forming material is applied to the roller, and the roller is rolled along the coating portion, whereby the protective layer forming material is applied. Yes.
[0005]
In order to automate such work and make the coating quality uniform, a method of spreading the protective layer forming material by blowing air after pouring the protective layer forming material on the vehicle body has been proposed (for example, , See 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.
[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, an industrial robot may be employed, and the robot may be provided with a roller for applying a protective layer forming material to the vehicle. Be considered.
[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 it is practically difficult to replace the rollers each time because the procedure becomes complicated.
[0012]
The present invention has been made in consideration of such problems, and a coating device for a protective layer forming material that enables a protective layer forming material to be coated with an appropriate width according to the area and width of the coating surface. 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 in the vicinity of a conveyance line of a vehicle, capable of teaching operation, a roller mechanism connected to the robot and rotatably supporting a roller, and after drying A first supply unit that supplies a liquid protective layer forming material acting as a peelable protective layer to one end of the roller; and a second supply unit that supplies the protective layer forming material to the other end of the roller. The roller mechanism portion has one end connected to the first supply portion and the other end closed, and a plurality of nozzle holes provided on the outer peripheral portion, on the same axis as the first tube member. A second pipe member, one end of which is connected to the second supply unit and the other end is closed, and a plurality of nozzle holes are provided in an outer peripheral part; the roller; the first pipe member; and the second pipe member; Between the first pipe member and the front A second pipe the protective layer forming material is supplied from the nozzle hole of the member, characterized in that it comprises a substantially cylindrical collar member having an opening leading to said roller.
[0014]
Thus, the first Pipe Material and second Pipe By supplying the protective layer forming material individually to the material, the protective layer forming material can be applied with an appropriate width.
[0015]
In this case, the first Pipe The other end of the material and the second Pipe When a fitting portion that engages the other end of the material is provided, the first Pipe Material and second Pipe The material is in the form of a single rod, and the connecting portion can be prevented from bending. As a result, the first Pipe Material and second Pipe The collar member can be interposed between the material and the roller in a stable state.
[0016]
Further, when the first pipe member and the second pipe member have different lengths, Pipe Length of material or second Pipe A width corresponding to the length of the material can be applied freely.
[0017]
Furthermore, an acrylic copolymer agent is used as the material for the protective layer forming material. Thereby, it becomes possible to protect the coating part of a vehicle more reliably. Moreover, when the protective layer forming material is removed from the painted portion of the vehicle, it can be easily removed.
[0018]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, a preferred embodiment of a coating device for a protective layer forming material according to the present invention will be described with reference to the accompanying drawings.
[0019]
As shown in FIGS. 1 and 2, the protective layer forming material coating apparatus 10 according to the present embodiment is provided in a transport line 12 of an automobile, and the protective layer forming material is applied to a vehicle 14 that has been painted. Apply.
[0020]
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 It has the coating material pipe line 22 connected to 16a-16c, and the water pipe line 26 which supplies water from the water supply source 24 to the robots 16a-16c. The robots 16a to 16c are controlled by robot controllers 28a to 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. 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 to 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 to 16c. The protective layer forming material is controlled to have an appropriate temperature by a heater and a thermometer (not shown). A roller mechanism portion 34 to which a protective layer forming material is supplied by the coating material conduit 22 and the tubes 23a and 23b at the tip portions thereof is provided at the tip portions of the robots 16a to 16c, 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 portions 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 the vehicle 14 is delivered to the user, it can be easily peeled off when the protective layer forming material is removed.
[0024]
As illustrated in FIG. 3, the robots 16 a to 16 c are, for example, industrial articulated robots, and a base unit 40 and a first arm 42 and a second arm 44 in order with the base unit 40 as a reference. 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.
[0025]
The first arm 42 can be rotated horizontally and vertically with respect to the base portion 40 by axes J1 and J2. The second arm 44 is connected to the first arm 42 so as to be rotatable about the axis J3, and the second arm 44 can be rotated by the axis J4. The third arm 46 is connected to the second arm 44 so as to be rotatable about the axis J5, and the third arm 46 can be rotated by the axis J6.
[0026]
By such operations of the six-axis robots 16a to 16c, the roller mechanism unit 34 connected to the tip can be moved to an arbitrary position in the vicinity of the vehicle 14 and can be set in an arbitrary direction. It is. In other words, the roller mechanism 34 can move with six degrees of freedom. The robots 16a to 16c may have an operation unit such as an expansion / contraction operation and a parallel link operation in addition to the rotation operation.
[0027]
As shown in FIGS. 4 to 6, the roller mechanism 34 is attached to the tip of the third arm 46 of the robot 16a (16b, 16c) and absorbs and stores the protective layer forming material in a cylindrical shape. And a thrust rotating portion 69 which is a mounting portion for the third arm 46. The thrust rotating portion 69 includes an attachment member 70, a thrust rotating member 74 that is rotatably supported with respect to the attachment member 70 via a bearing 72, and a base portion 76 attached to the lower portion of the thrust rotating member 74. And have.
[0028]
The roller mechanism part 34 is provided with pneumatic cylinders 78 and 80 provided at both ends of the base part 76 and substantially lower ends of two downward extending parts 76a extending downward from the base part 76 via a swing shaft 82. A swinging member 84 that is pivotally supported, a holder 86 that holds the roller 48, and a connection portion 88 that connects the holder 86 and the swinging member 84 are provided. The swing member 84 has two upward extending portions 84a extending upward, and a pin 90 is provided in parallel with the swing shaft 82 at the substantially upper end of the upward extending portion 84a. The pin 90 is movably inserted into a long hole 91 formed in the downward extending portion 76a.
[0029]
The roller mechanism section 34 includes two pin pressing members 92 and 94 that rotate about the swing shaft 82 under the force of the rods 78a and 80a of the pneumatic cylinders 78 and 80. The pressing surface 92a of the pin pressing member 92 presses the left surface of the pin 90 in FIG. 6 when the rod 78a is retracted, and the pressing surface 94a of the pin pressing member 94 is the pin 90 in FIG. 6 when the rod 80a retracts. Press the right side of.
[0030]
A rotation restricting member 96 is provided on the upper portion of the thrust rotating member 74, and a small protrusion 98 that protrudes downward from the mounting member 70 is disposed in a 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 within the range of the gap. Here, the thrust direction is a direction orthogonal to the axis of the roller 48 itself, and is a rotation direction around the axis C of the third arm 46 (see FIG. 6). The bolt 100 for attaching the attachment member 70 to the third arm 46 may also be used as the small protrusion 98.
[0031]
The connection portion 88 is provided with two clampers 102 and 104 that face each other at the upper and lower portions. The clamper 102 is fixed to the swing member 84, while the clamper 104 is fixed to the holder 86, and the clampers 102 and 104 hold the aluminum pipe 106, thereby connecting the swing member 84 and the holder 86. . On the surface of the aluminum pipe 106, an annular groove 106a serving as a dividing line of the aluminum pipe 106 is provided.
[0032]
As shown in FIGS. 4 and 5, the holder 86 includes a plate-shaped holder body 86 e. A fixed holder portion 86a is fixed to one end of the holder body 86e by a bolt 86b, and a movable holder portion 86c is rotatably attached to the other end of the holder body 86e via a shaft member 86d. Connecting members 111a and 111b are fixed to the fixed holder portion 86a and the movable holder portion 86c by nuts 110, respectively. The tube 23a is connected to one end side opening of the connecting member 111a, and the tube 23b is connected to one end side opening of the connecting member 111b.
[0033]
A first end 112a of a hollow first pipe (first pipe member) 112 is connected to the opening on the other end side of the connecting member 111a. A first end 113a of a hollow second pipe (second pipe member) 113 is connected to the other end side opening of the connecting member 111b. The second pipe 113 can be fitted to the connecting member 111b, and is held liquid-tight by being fitted. The first pipe 112 and the second pipe 113 supply the protective layer forming material supplied from the tube 23a and the tube 23b into the roller 48 and support the roller 48 rotatably. The lengths of the first pipe 112 and the second pipe 113 are W1 and W2, respectively (see FIG. 7), and the total length obtained by adding the first pipe 112 and the second pipe 113 matches the width of the roller 48. It is the length W to do. The length W1 is longer than the length W2.
[0034]
A plurality of (for example, two) conical grooves (not shown) are formed in the first end 112a of the first pipe 112 and the first end 113a of the second pipe 113, and the connecting member 111a is formed in these grooves. By engaging an embedded bolt or the like (not shown) from the side, the first pipe 112 and the second pipe 113 are firmly attached to the connecting member 111a.
[0035]
The second end of the second pipe 113 is closed by a plug 113c having a recess (fitting portion) 113b (see FIG. 7), and the second end of the first pipe 112 can be fitted with the recess 113b. It is closed with a stopper 112c having a convex portion (fitting portion) 112b (see FIG. 7). By fitting the convex portion 112b into the concave portion 113b, the first pipe 112 and the second pipe 113 have a single rod shape, and the connection portion can be prevented from being bent.
[0036]
In the first pipe 112 and the second pipe 113, a plurality of nozzle holes 114 for feeding the supplied protective layer forming material to the roller 48 are formed. The first pipe 112 and the second pipe 113 are preferably formed of a stainless steel material. For example, it is more preferable that the first pipe 112 and the second pipe 113 are formed of a SUS304-based material (steel pipe classified into an austenitic system: compliant with Japanese Industrial Standards). .
[0037]
The movable holder portion 86c is rotatable under the urging action of the spring 116, and the first end portion 113a of the second pipe 113 is engaged with the connecting member 111b by the elastic force of the spring 116. Thereby, the 1st pipe 112 and the 2nd pipe 113 are held reliably.
[0038]
As shown in FIG. 5 and FIG. 7, the roller 48 is formed of a material that can absorb and store the protective layer forming material, and the protective layer forming material is applied by being in close contact with the surface of the vehicle 14. A hollow application member (application part) 48a, and end caps 122 that are liquid-tightly attached to the openings 48b at both ends of the application member 48a via an O-ring 120.
[0039]
A hole 122 a is formed in the center of the end cap 122, and the first pipe 112 and the second pipe 113 are directly inserted into the hole 122 a, so that the end cap 122 is integrated with the roller 48. The first pipe 112 and the second pipe 113 are supported rotatably. The fitting of the first pipe 112 and the second pipe 113 and the hole 122a is adjusted to such an extent that the protective layer forming material can be held inside the coating member 48a.
[0040]
As shown in FIGS. 7 and 8, a substantially cylindrical collar member 124 is interposed between the first pipe 112 and the second pipe 113 and the roller 48. The collar member 124 includes a plurality of, for example, two split members 126a and 126b, which are made of, for example, plastic and divided in the radial direction in order to reduce the weight. Between the split members 126a and 126b, slit-like grooves (openings) 128a and 128b extending in the axial direction of the roller 48 (in the direction of arrow B in FIG. 7) are formed. The grooves 128a and 128b are provided with a predetermined gap S.
[0041]
The split members 126a and 126b are provided with a plurality of holes (openings) 188a and 188b penetrating from the center of the collar member 124 in the radial direction. The holes 188a and 188b are formed in a staggered manner in the outer periphery of the split members 126a and 126b, respectively, and are uniformly distributed in the axial direction. The protective layer forming material is fed into the roller 48 along the groove portions 128a and 128b, and is discharged into the roller 48 from the plurality of holes 188a and 188b through the centrifugal force generated by the rotation of the collar member 124. .
[0042]
Since the collar member 124 is formed with slit-shaped grooves 128a and 128b extending in the axial direction of the roller 48 and having a predetermined gap S, the protective layer forming material is formed in the roller 48 from the grooves 128a and 128b. The protective layer forming material can be supplied uniformly over the entire length of the roller 48 in the axial direction. Thereby, it is possible to obtain an effect that the coating quality is uniformed and the coating operation is performed with high accuracy with a simple configuration.
[0043]
In addition, since the collar member 124 is accommodated in the roller 48, the roller 48 is quickly filled with a necessary amount of the protective layer forming material. This is because the volume of the space in the roller 48 is greatly reduced. For this reason, compared with the structure which does not use the collar member 124, there exists an advantage that the application | coating operation | work by a protective layer forming material is efficiently performed maintaining a high response.
[0044]
Further, in the collar member 124, grooves 128a and 128b are formed between the divided members 126a and 126b. Therefore, the configuration of the collar member 124 is simplified, and the collar member 124 can be manufactured economically.
[0045]
As shown in FIG. 9, a combined hydraulic and pneumatic circuit (supply mechanism unit) 150 for supplying the protective layer forming material to the roller 48 via the tubes 23 a and 23 b includes a compressor 152, and the 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 includes a trigger provided between the MCV (Material Control Valve) 162 to which the secondary conduit of the regulator operation valve 160 and the water conduit 26 are connected, and the secondary of the MCV 162 and the tube 23a. It has a valve 164a and a trigger valve 164b provided between the secondary side of the MCV 162 and the tube 23b. 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. 9 shows a pneumatic pipe line.
[0046]
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.
[0047]
The composite circuit 150 further includes an MCV switching electromagnetic valve 166 that operates the switching valves 162a and 162b in a pilot type 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 switch the trigger valves 164a and 164b to communication / blocking by an electric signal supplied from the control unit 18, and supply water or a protective layer forming material individually to the tubes 23a and 23b.
[0048]
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.
[0049]
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.
[0050]
Next, the operation | movement which apply | coats a protective layer forming material to the vehicle 14 using the coating device 10 comprised in this way is demonstrated.
[0051]
First, the robot 16a to 16c is instructed to operate in advance. Specifically, the robots 16a to 16c are instructed to share the bonnet part 14a, the roof center part 14b, and the roof rear part 14c of the vehicle 14 and to apply the protective layer forming material to the respective responsible parts. The taught teaching data is recorded and held in a predetermined recording unit of the control unit 18 (see FIG. 1). When the vehicle 14 is, for example, a sedan type, the robot 16c shares the trunk portion.
[0052]
As shown in FIG. 10, the distance between the third arm 46 of the robot 16a and the surface of the vehicle 14 is appropriately maintained. Specifically, the inclination angle of the swing member 84 is set to an appropriate angle θ at the flat point Pa. The third arm 46 is moved in parallel with the surface of the vehicle 14 from the flat point Pa. In addition, the portion Pb of the shallow concave portion 200 on the surface continuous from the flat portion Pa may be moved in parallel with the surface at the flat portion Pa as it is. Further, even at the location Pc of the low convex portion 202 on the 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 portion 200 and the convex portion 202 may be ignored, and the inclination angle of the swing member 84 may be slightly changed. By ignoring the shallow concave portion 200 and the relatively low convex portion 202 in this way, the operation teaching of the robot 16a is facilitated.
[0053]
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.
[0054]
When the protective layer forming material is applied to the vehicle 14 while moving the robot 16a to the right in FIG. 10, the right pneumatic cylinder is generated so that a relatively weak force Fa is generated in the direction in which the rod 80a retracts. 80 is supplied with air. Further, air is supplied to the left pneumatic cylinder 78 so that the rod 78a extends. Thereby, the pressing surface 94 a of the right pin pressing member 94 presses the right surface of the pin 90 with a relatively weak force, and the pressing surface 92 a of the left pin pressing member 92 is separated from the pin 90. Therefore, the swing member 84 and the roller 48 receive a counterclockwise force around the swing shaft 82, and the roller 48 is pressed against the surface of the vehicle 14 with an appropriate pressing force.
[0055]
The force Fa is appropriately adjusted according to the application location and moving method of the roller 48. This adjustment can be easily performed by operating a pressing force adjusting function unit corresponding to the regulator 176 with the control unit 18 or operating a predetermined dial or the like.
[0056]
On the other hand, as shown in FIG. 11, when applying the protective layer forming material to the vehicle 14 while moving the robot 16a to the left, a relatively weak force Fa is generated in the direction in which the rod 78a retracts. Air is supplied to the left pneumatic cylinder 78. Further, air is supplied to the right pneumatic cylinder 80 so that the rod 80a extends. Thereby, the pressing surface 92 a of the left pin pressing member 92 presses the left surface of the pin 90 with a relatively weak force Fa, and the pressing surface 94 a of the right pin pressing member 94 is separated from the pin 90. Accordingly, the swing member 84 and the roller 48 receive a clockwise force around the swing shaft 82, and the roller 48 is pressed against the surface of the vehicle 14 with an appropriate pressing force.
[0057]
Thus, the roller 48 can be appropriately pressed against the surface of the vehicle 14 by controlling the direction and pressure of the air flow supplied to the pneumatic cylinders 78 and 80 in accordance with the traveling direction of the robot 16a. it can.
[0058]
In this case, the trigger valves 164a and 164b are blocked and communicated according to the width of the protective layer forming material applied. That is, when the width for applying the protective layer forming material is wide, as shown in FIG. 12A, both the trigger valves 164a and 164b are connected to supply the protective layer forming material to the first pipe 112 and the second pipe 113. . This protective layer forming material can ooze out from the holes 188a and 188b to the entire surface of the application member 48a and can be applied to the surface of the vehicle 14 with a width of W.
[0059]
Moreover, when the width | variety which applies a protective layer forming material is a little narrow, as shown to FIG. 12B, the trigger valve 164a is connected and the trigger valve 164b is interrupted | blocked. As a result, the protective layer forming material is supplied only to the first pipe 112, and the protective layer forming material oozes out from the portion within the width W1 on the left side in FIG. Therefore, it can be applied to the surface of the vehicle 14 with a slightly narrow width W1.
[0060]
Further, when the width for applying the protective layer forming material is narrow, as shown in FIG. 12C, the trigger valve 164b is communicated to shut off the trigger valve 164a. As a result, the protective layer forming material is supplied only to the second pipe 113, and the protective layer forming material oozes out from the portion within the width W2 on the right side in FIG. Therefore, it can apply | coat to the surface of the vehicle 14 with the width | variety of narrow W2.
[0061]
Thus, since the width of applying the protective layer forming material can be changed, for example, as shown in FIG. 13, after the protective layer forming material is applied a plurality of times at intervals of W, the edge of the sunroof hole 14d is slightly When there is an unpainted width in the narrow W1 width, the protective layer forming material can be supplied only to the first pipe 112 by applying the width of W1 by blocking the trigger valve 164b. In this case, the protective layer forming material is not applied unnecessarily with respect to the width portion W2 to which the protective layer forming material has already been applied. Further, the roller 48 does not protrude into the sunroof hole 14d, and the protective layer forming material does not drop into the vehicle 14.
[0062]
In addition, for example, an area where the protective layer forming material is applied is assigned to each robot 16a, 16b, and 16c. As shown in FIG. It may not be necessary to apply to the adjacent area 302. In this case, after applying the protective layer forming material a plurality of times at intervals of W, when there is unpainted width W2 at the narrow edge of the area 300, the trigger valve 164a is shut off so that only the second pipe 113 is applied. A protective layer forming material can be supplied and applied with a width of W2. In this case, the protective layer forming material is not applied unnecessarily with respect to the width portion W1 to which the protective layer forming material has already been applied.
[0063]
The vehicle 14 to which the protective layer forming material is applied by the robots 16a to 16c is transported to the next process by the transport line 12. Then, the robots 16a to 16c hold a standby posture that does not interfere with the vehicle 14, and wait until the next vehicle 14 is carried in. At this time, the trigger valves 164a and 164b are shut off and the supply of the protective layer forming material is stopped. 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.
[0064]
In the above description, it has been described that the collar member 124 is interposed between the first pipe 112 and the second pipe 113 and the roller 48, but the first pipe 112, the second pipe 113 and the collar member 124 are interposed. And may be formed integrally. In addition, the first pipe 112 and the second pipe 113 do not necessarily have to be separate bodies, and may be integrally formed pipes provided with plugs that block the left and right pipelines.
[0065]
Furthermore, some of the bumpers of the vehicle 14 are colored and need not be painted. However, the protective layer forming material may be applied to a portion other than the painted portion such as the bumper.
[0066]
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.
[0067]
【The invention's effect】
As described above, according to the coating apparatus for a protective layer forming material according to the present invention, the first Pipe Material and second Pipe By supplying the protective layer forming material individually to the material, the protective layer forming material can be applied with an appropriate width according to the application surface. The first Pipe The length of the material and the second Pipe By setting the length of the material to a different value, the first Pipe Material and second Pipe The protective layer forming material can be applied with a width corresponding to the length of the material.
[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 front view of the coating apparatus.
FIG. 3 is a perspective view of a robot in the coating apparatus and a roller mechanism provided in the robot.
FIG. 4 is an enlarged perspective view of the roller mechanism.
FIG. 5 is a partial sectional front view of the roller mechanism.
FIG. 6 is a side view of the roller mechanism.
FIG. 7 is an exploded perspective view of a main part of the roller mechanism.
FIG. 8 is a cross-sectional explanatory view of a main part of the roller mechanism.
FIG. 9 is a diagram showing a combined hydraulic and pneumatic circuit.
FIG. 10 is an explanatory diagram showing the positional relationship between the robot and the surface of the vehicle in the process of moving the robot to the right.
FIG. 11 is an explanatory diagram showing a positional relationship between the robot and the surface of the vehicle when the robot is moved in the left direction.
FIG. 12A is a schematic cross-sectional view of a roller showing a state in which a protective layer forming material is supplied to both the first pipe and the second pipe, and FIG. 12B shows the first pipe shut off from the first pipe; FIG. 12C is a schematic cross-sectional view of a roller showing a state of supplying the protective layer forming material to FIG. 12C, and FIG. 12C is a schematic cross-sectional view of the roller showing a state of supplying the protective layer forming material to the second pipe while blocking the first pipe. is there.
FIG. 13 is a schematic perspective view of a roller showing a state where a second pipe is shut off and a protective layer forming material is supplied to the first pipe.
FIG. 14 is a schematic perspective view of a roller showing a state in which a first pipe is shut off and a protective layer forming material is supplied to a second pipe.
[Explanation of symbols]
10 ... Coating device 12 ... Conveying line
14 ... Vehicles 16a-16c ... Robot
18 ... Control unit 20 ... Tank
22 ... Applicant pipeline 23a, 23b ... Tube
30 ... slide rail 32 ... pump
34 ... Roller mechanism 40, 76 ... Base
48 ... Roller 48a ... Coating member
48b ... opening 78, 80 ... pneumatic cylinder
78a, 80a ... Rod 82 ... Oscillating shaft
84 ... Swing member 86 ... Holder
111a, 111b ... connecting member 112, 113 ... pipe
112a, 113a ... end 112c, 113c ... stopper
114 ... Nozzle hole 120 ... O-ring
122: end cap 122a, 188a, 188b ... hole
124 ... collar member

Claims (4)

A robot that is provided near the vehicle transfer line and capable of teaching;
A roller mechanism connected to the robot and rotatably supporting the roller;
A first supply unit for supplying a liquid protective layer forming material acting as a peelable protective layer after drying to one end of the roller;
A second supply unit for supplying the protective layer forming material to the other end of the roller;
Have
The roller mechanism portion has one end connected to the first supply portion and the other end closed, and a first pipe member having a plurality of nozzle holes in the outer peripheral portion;
A second pipe member arranged on the same axis as the first pipe member, one end of which is connected to the second supply unit and the other end is closed, and a plurality of nozzle holes are provided in the outer peripheral part;
The protective layer forming material interposed between the roller and the first tube member and the second tube member and supplied from the nozzle holes of the first tube member and the second tube member is disposed inside the roller. A substantially cylindrical collar member with an opening leading to
An apparatus for applying a protective layer forming material. In the coating apparatus of the protective layer forming material of Claim 1,
Coating apparatus of the protective layer forming material, characterized in that it comprises a fitting portion for engaging the other end of the second tubular member to the other end of the first tubular member. In the coating device of the protective layer forming material of Claim 1 or 2,
The apparatus for applying a protective layer forming material, wherein the first pipe member and the second pipe member have different lengths. In the coating device of the protective layer forming material of any one of Claims 1-3,
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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