JP2004321846A - Coating apparatus for protective layer forming material - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To change the coating width of a protective layer forming material correspondingly to the area or width of a coating surface. <P>SOLUTION: This protective layer forming material is supplied to a roller 48 through tubes 23a and 23b by allowing trigger valves 164a and 164b to communicate with each other. The first pipe 112 connected to the tube 23a at one end thereof and the second pipe 113, which is arranged on the same axial line as the first pipe 112 and connected to the tube 23b at one end thereof, are provided in the roller 48. The protective layer forming material passes through the hole part 188a of a collar member 124 from a plurality of the nozzle orifices of the first and second pipes 112 and 113 to bleed on the roller 48. When the protective layer forming material is applied to a large width W, the trigger valves 164a and 164b are allowed to communicate with each other and, when applied to a slightly narrow width W1, the trigger valve 164a is opened and the trigger valve 164b is cut off. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an apparatus for applying a protective layer forming material to an outer surface mainly of a painted portion of a vehicle where the coating is completed, and more particularly to a liquid protective layer forming method using a roller which is in close contact with the outer surface. The present invention relates to an apparatus for applying a protective layer forming material for applying a material.
[0002]
[Prior art]
Vehicles such as automobiles are often stored in an outdoor stock yard or transported by trailer or ship before being handed over to a user after being manufactured. During this time, the vehicle is exposed to dust, metal powder, salt, oil, acid, direct sunlight, etc. Quality 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 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.
[0004]
In this case, in the step of applying the protective layer forming material, the protective layer forming material is adhered to a roller, and the roller is rolled along a coating portion, whereby the applying operation of the protective layer forming material is performed. I have.
[0005]
In order to automate such work and to make the coating quality uniform, there has been proposed a method of pouring a protective layer forming material onto a vehicle body and then blowing the air to spread the protective layer forming material (e.g., , Patent Document 2). According to this method, much of the work in the application process of 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.
[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 such worker's work and to make the work quality uniform, an industrial robot is employed, and the robot is provided with a roller for applying a protective layer forming material to a vehicle. Will be considered.
[0011]
By the way, the application surface on which the protective layer forming material is applied has a narrow surface at an end or the like, and a roller having a narrow width may be used in order to cope with such a narrow surface. On the other hand, in order to apply the protective layer forming material to a wide surface such as a roof, it is possible to apply the material efficiently by using a wide roller. That is, it is preferable to use 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 view of such problems, and according to the area and width of an application surface, a protective layer forming material coating apparatus that can apply a protective layer forming material with an appropriate width. The purpose is to provide.
[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, a robot capable of performing a teaching operation, a roller mechanism unit connected to the robot and rotatably supporting a roller, and after drying. A first supply unit that supplies a liquid protective layer forming material that functions 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 has one end connected to the first supply unit and the other end closed, and a first pipe member provided with a plurality of nozzle holes in an outer peripheral portion; and a coaxial line with the first pipe member. A second pipe member arranged side by side, one end of which is connected to the second supply unit and the other end of which is closed, and a plurality of nozzle holes provided in an outer peripheral portion; and the roller, the first pipe member, and the second pipe member. Interposed 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, by supplying the protective layer forming material individually to the first conduit member and the second conduit member, the protective layer forming material can be applied with an appropriate width.
[0015]
In this case, if a fitting portion is provided for engaging the other end of the first conduit member with the other end of the second conduit member, the first conduit member and the second conduit member are formed as a single rod. And the connection portion can be prevented from bending. Thus, the collar member can be stably interposed between the first and second conduit members and the roller.
[0016]
If the first pipe member and the second pipe member have different lengths, the length corresponding to the length of the first pipe member or the length corresponding to the length of the second pipe member is selectively applied. be able to.
[0017]
Furthermore, as a material of the protective layer forming material, an acrylic copolymer agent is used. This makes it possible to more reliably protect the painted portion of the vehicle. Moreover, when the protective layer forming material is removed from the painted portion of the vehicle, it can be easily peeled off.
[0018]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, a protective layer forming material coating apparatus according to the present invention will be described with reference to the accompanying drawings, showing preferred embodiments.
[0019]
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 the protective layer forming material is applied to a vehicle 14 on which painting is completed. Is applied.
[0020]
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 to 16c, and a water pipe 26 for supplying water from the water supply source 24 to the robots 16a to 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 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 front in the traveling direction, the robot 16b is provided in the middle of the traveling direction, and the robot 16c is provided in the rear in the traveling direction. The robots 16 a to 16 c can move on a slide rail 30 parallel to the transfer line 12.
[0022]
A pump 32 is provided in the middle of the coating material pipe 22, and sucks the protection layer forming material from the tank 20 and supplies it to the robots 16a to 16c. The protective layer forming material is controlled by a heater and a thermometer (not shown) so as to have an appropriate temperature. At the distal ends of the robots 16a to 16c, there are provided roller mechanism sections 34 to which the protective layer forming material is supplied by the coating material pipeline 22 and the tubes 23a and 23b at the distal ends thereof.
[0023]
The material of the protective layer forming material is mainly composed of an acrylic copolymer agent, and preferably has two types of 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. The viscosity of the protective layer forming material can be adjusted by changing the mixing ratio with water and the temperature, and when dried, the material closely 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 the vehicle 14 is delivered to the user, the protective layer forming material can be easily peeled off when the material is removed.
[0024]
As shown in FIG. 3, the robots 16 a to 16 c are, for example, articulated robots for industrial use, and include a base part 40, a first arm 42, and a second arm 44 in order based on the base part 40. And a third arm 46, 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.
[0025]
The first arm 42 is rotatable horizontally and vertically with respect to the base 40 by the axes J1 and J2. The second arm 44 is rotatably connected to the first arm 42 about a shaft J3, and the second arm 44 can be twisted and rotated about a shaft J4. The third arm 46 is rotatably connected to the second arm 44 by a shaft J5, and the third arm 46 can be twisted and rotated by a shaft J6.
[0026]
By the operation of the robots 16a to 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 can be set to an arbitrary direction. It is. In other words, the roller mechanism 34 can move in six degrees of freedom. In addition, the robots 16a to 16c may have an operation unit such as an expansion / contraction operation and a parallel link operation other than the rotation operation.
[0027]
As shown in FIGS. 4 to 6, the roller mechanism 34 is attached to the distal end 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 that is a mounting portion for the third arm 46. The thrust rotating portion 69 includes a mounting member 70, a thrust rotating member 74 rotatably supported by the mounting member 70 via a bearing 72, and a base portion 76 mounted below the thrust rotating member 74. And
[0028]
The roller mechanism 34 includes pneumatic cylinders 78 and 80 provided at both ends of the base 76, and two lower extending portions 76 a extending downward from the base 76 at substantially lower ends thereof via a swing shaft 82. It has a swing member 84 pivotally supported, a holder 86 for holding the roller 48, and a connecting portion 88 for connecting the holder 86 and the swing member 84. The swinging member 84 has two upwardly extending portions 84a extending upward, and a pin 90 is provided at a substantially upper end of the upwardly extending portion 84a in parallel with the swinging shaft 82. The pin 90 is movably inserted into a long hole 91 formed in the downward extension 76a.
[0029]
The roller mechanism 34 has two pin pressing members 92 and 94 that rotate about the swing shaft 82 by receiving forces from 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 retracts, and the pressing surface 94a of the pin pressing member 94 presses the pin 90 in FIG. 6 when the rod 80a retracts. Press the right side of.
[0030]
A rotation regulating member 96 is provided above the thrust rotating member 74, and a small projection 98 projecting downward from the mounting member 70 is arranged in a concave portion 96 a on the upper surface of the rotation regulating member 96. The width of the small protrusion 98 is slightly smaller than the width of the concave portion 96a, and the thrust rotating member 74 is freely rotatable in the thrust direction in the range of this gap. Here, the thrust direction is a direction orthogonal to the axis of the roller 48 itself, and is a rotation direction about the axis C of the third arm 46 (see FIG. 6). Note that the bolt 100 for attaching the attachment member 70 to the third arm 46 may also serve as the small projection 98.
[0031]
The connection part 88 is provided with two clampers 102 and 104 that are opposed at the upper and lower parts. While the clamper 102 is fixed to the swing member 84, the clamper 104 is fixed to the holder 86, and the swing member 84 and the holder 86 are connected by holding the aluminum pipe 106 by the clampers 102 and 104. . On the surface of the aluminum pipe 106, there is provided an annular groove 106a serving as a dividing line of the aluminum pipe 106.
[0032]
The holder 86 includes a plate-shaped holder main body 86e, as shown in FIGS. A fixed holder 86a is fixed to one end of the holder main body 86e by bolts 86b, and a movable holder 86c is rotatably mounted to the other end of the holder main 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 other end side opening 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 freely fitted to the connecting member 111b, and is kept liquid-tight by being fitted. The first pipe 112 and the second pipe 113 supply the protective layer forming material supplied from the tubes 23a and 23b into the roller 48, and rotatably support the roller 48. The first pipe 112 and the second pipe 113 have lengths W1 and W2, respectively (see FIG. 7), and the total length of the first pipe 112 and the second pipe 113 added together is equal to the width of the roller 48. Is the length W. 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 members 111a are formed in these grooves. The first pipe 112 and the second pipe 113 are firmly attached to the connecting member 111a by engaging an embedded bolt (not shown) or the like from the side.
[0035]
The second end of the second pipe 113 is closed by a stopper 113c having a recess (fitting portion) 113b (see FIG. 7), and the second end of the first pipe 112 can be fitted to the recess 113b. It is closed by a stopper 112c provided with a large 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, so that the connecting portion can be prevented from bending.
[0036]
The first pipe 112 and the second pipe 113 are formed with a plurality of nozzle holes 114 for feeding the supplied protective layer forming material to the roller 48. 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 be formed of a SUS304-based material (steel pipe classified as an austenitic type: based on Japanese Industrial Standards). .
[0037]
The movable holder portion 86c is rotatable under the urging action of a spring 116, and the first end 113a of the second pipe 113 is engaged with the connecting member 111b by the elastic force of the spring 116. This ensures that the first pipe 112 and the second pipe 113 are held.
[0038]
As shown in FIGS. 5 and 7, the roller 48 is formed of a material capable of absorbing and storing the protective layer forming material, and is in close contact with the surface of the vehicle 14 to apply the protective layer forming material. A coating member (application portion) 48a having a hollow shape, and an end cap 122 which is mounted in a liquid-tight manner via an O-ring 120 in openings 48b at both ends of the coating member 48a.
[0039]
A hole 122a is formed at the center of the end cap 122, and the first pipe 112 and the second pipe 113 are directly inserted into the hole 122a so that the end cap 122 is integrated with the roller 48. The first and second pipes 112 and 113 are rotatably supported. The fitting of the first pipe 112, 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 is made of, for example, plastic and is provided with a plurality of, for example, two split members 126a and 126b that are radially divided 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 (the direction of arrow B in FIG. 7) are formed. The grooves 128a and 128b provide a predetermined gap S.
[0041]
The split members 126a and 126b are provided with a plurality of holes (openings) 188a and 188b penetrating radially from the center of the collar member 124. The holes 188a and 188b are formed in a staggered manner on the outer peripheral portions of the split members 126a and 126b, respectively, and are formed so as to be uniformly distributed in the axial direction. The protective layer forming material is fed into the roller 48 along the grooves 128a and 128b, and is discharged from the plurality of holes 188a and 188b into the roller 48 through centrifugal force due to the rotation of the collar member 124. .
[0042]
Since the collar member 124 has slit-shaped grooves 128a and 128b extending in the axial direction of the roller 48 and providing a predetermined gap S, the protective layer forming material is transferred from the grooves 128a and 128b to the inside of the roller 48. And the protective layer forming material can be uniformly supplied over the entire length of the roller 48 in the axial direction. Thus, an effect is obtained that, with a simple configuration, the coating quality is made uniform and a high-precision coating operation is performed.
[0043]
Further, since the collar member 124 is accommodated in the roller 48, the necessary amount of the protective layer forming material is quickly filled in the roller 48. This is because the volume of the space in the roller 48 is greatly reduced. For this reason, there is an advantage that the application operation using the protective layer forming material is efficiently performed while maintaining a high response, as compared with the configuration in which the collar member 124 is not used.
[0044]
Further, the collar member 124 has grooves 128a and 128b formed between the divided split 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) 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 a compressor 152. An air tank 154 connected to the discharge section, 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 section 18, And a regulator operating valve 160 that is pilot operated by the secondary pressure of the regulator 158 to reduce the pressure in the coating material pipeline 22. The composite circuit 150 includes an MCV (Material Control Valve) 162 to which the secondary pipe and the water pipe 26 of the regulator operating valve 160 are connected, and a trigger provided between 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. 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. 9 indicates a pneumatic pipeline.
[0046]
The MCV 162, the trigger valves 164a and 164b, 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.
[0047]
The composite circuit 150 further includes an MCV switching solenoid valve 166 for operating 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 for pilot-operating the trigger valve 164a. 168a and a trigger switching solenoid valve 168b for pilot-operating the trigger valve 164b. The MCV switching electromagnetic valve 166 connects one of the switching valves 162a and 162b and shuts off the other according to an electric signal supplied from the control unit 18, switches between water and the protective layer forming material, and triggers the valves 164a and 164b. To supply. The trigger switching electromagnetic valves 168a and 168b switch the trigger valves 164a and 164b to open / close by an electric signal supplied from the control unit 18 to individually supply water or the protective layer forming material to the tubes 23a and 23b.
[0048]
In the middle of the coating material pipe 22 and the water pipe 26, manual stop valves 170 and 172 are provided, respectively. Normally, 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.
[0049]
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 each of the robots 16a, 16b, and 16c, and the other devices are individually provided for each of the robots 16a, 16b, and 16c. ing.
[0050]
Next, an operation of applying the protective layer forming material to the vehicle 14 using the coating apparatus 10 configured as described above will be described.
[0051]
First, the operation is taught to each of the robots 16a to 16c in advance. Specifically, the robots 16a to 16c are instructed to share the bonnet portion 14a, 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 teaching data taught is recorded and stored 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 a 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, and specifically, the inclination angle of the swing member 84 at the flat place Pa is set to an appropriate angle θ. The third arm 46 is moved in parallel with the surface of the vehicle 14 from a flat place Pa. Further, even at the position Pb of the shallow concave portion 200 on the surface continuous from the flat portion Pa, the surface may be moved in parallel with the surface at the flat portion Pa. Further, even at the position Pc of the low convex portion 202 on the surface continuous from the flat portion Pa, the portion may be moved in parallel with the surface at the flat portion Pa. In this manner, the concave portion 200 and the convex portion 202 may be ignored, and the tilt angle of the swing member 84 may be slightly changed. By ignoring such shallow concave portions 200 and relatively low convex portions 202, the operation teaching of the robot 16a becomes easy.
[0053]
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.
[0054]
When applying the protective layer forming material to the vehicle 14 while moving the robot 16a to the right in FIG. 10, the right pneumatic cylinder is configured to generate a relatively weak force Fa in the direction in which the rod 80a contracts. Supply air to 80. In addition, air is supplied to the left pneumatic cylinder 78 so that the rod 78a extends. Accordingly, the pressing surface 94a of the right pin pressing member 94 presses the right side surface of the pin 90 with a relatively weak force, and the pressing surface 92a of the left pin pressing member 92 is separated from the pin 90. Accordingly, the swing member 84 and the roller 48 receive a counterclockwise force about 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 position and the moving method of the roller 48. This adjustment can be easily performed by operating the pressing force adjusting function unit corresponding to the regulator 176 by the control unit 18 or operating a predetermined dial or the like.
[0056]
On the other hand, as shown in FIG. 11, when the protective layer forming material is applied to the vehicle 14 while moving the robot 16a to the left, a relatively weak force Fa is generated in a direction in which the rod 78a contracts. The air is supplied to the left pneumatic cylinder 78. In addition, air is supplied to the right pneumatic cylinder 80 so that the rod 80a extends. Thereby, the pressing surface 92a of the left pin pressing member 92 presses the left side surface of the pin 90 with a relatively weak force Fa, and the pressing surface 94a of the right pin pressing member 94 is separated from the pin 90. Therefore, the swing member 84 and the roller 48 receive a clockwise force about the swing shaft 82, and the roller 48 is pressed against the surface of the vehicle 14 with an appropriate pressing force.
[0057]
As described above, by controlling the direction and pressure of the flow of air supplied to the pneumatic cylinders 78 and 80 according to the traveling direction of the robot 16a, the roller 48 can be appropriately pressed against the surface of the vehicle 14. it can.
[0058]
In this case, the trigger valves 164a and 164b are shut off and communicated according to the width of application of the protective layer forming material. That is, when the width of application of the protective layer forming material is wide, as shown in FIG. 12A, both of 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 seep out from the holes 188a and 188b to the entire surface of the application member 48a and be applied to the surface of the vehicle 14 with a width of W.
[0059]
Further, when the width for applying the protective layer forming material is slightly narrow, as shown in FIG. 12B, the trigger valve 164a is connected to shut off the trigger valve 164b. As a result, the protective layer forming material is supplied only to the first pipe 112, and the protective layer forming material seeps out of the holes 188a and 188b 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 smaller width of W1.
[0060]
Further, when the width of application of the protective layer forming material is narrow, as shown in FIG. 12C, the trigger valve 164b is connected 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 permeates the coating member 48a from a portion within the width W2 on the right side in FIG. 12C among the holes 188a and 188b. Therefore, it can be applied to the surface of the vehicle 14 with a narrow width W2.
[0061]
As described above, since the width of application of the protective layer forming material can be changed, for example, as shown in FIG. 13, after applying the protective layer forming material a plurality of times at intervals of W, the edge of the sunroof hole 14d is slightly applied. When there is an unpainted portion in the narrow width of W1, the protective layer forming material can be supplied only to the first pipe 112 by shutting off the trigger valve 164b, and the coating can be performed in the width of W1. In this case, the portion having the width of W2 to which the protective layer forming material has already been applied is not wastefully applied with the protective layer forming material. Further, the roller 48 does not protrude into the sunroof hole 14d, and the protective layer forming material does not drip into the vehicle 14.
[0062]
Further, for example, an area for applying the protective layer forming material is assigned to each of the robots 16a, 16b, and 16c. As shown in FIG. It may not be necessary to apply to the adjacent area 302. In this case, after the protective layer forming material is applied a plurality of times at intervals of W, when there is an unpainted portion in the narrow width W2 of the 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 portion having the width of W1 to which the protective layer forming material has already been applied does not needlessly apply the protective layer forming material.
[0063]
The vehicle 14 to which the protective layer forming material has been applied by the robots 16a to 16c is transported by the transport line 12 to the next step. 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 supply of the protective layer forming material is stopped by shutting off the trigger valves 164a and 164b. 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.
[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. However, the first pipe 112 and the second pipe 113 and the collar member 124 are interposed. May be integrally formed. Further, 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 for blocking left and right pipes.
[0065]
Furthermore, some bumpers of the vehicle 14 are colored and do not need to be painted. The protective layer forming material may be applied to a portion other than the painted portion such as the bumper.
[0066]
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.
[0067]
【The invention's effect】
As described above, according to the apparatus for applying a protective layer forming material according to the present invention, the protective layer forming material is separately supplied to the first pipe member and the second pipe member, so that the coating surface is provided. The protective layer forming material can be applied with an appropriate width according to the requirements. Further, by setting the length of the first conduit member and the length of the second conduit member to different values, the protective layer forming material can be formed with a width corresponding to the length of the first conduit member and the second conduit member. Can be applied.
[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 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 an explanatory sectional 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 a positional relationship between the robot and a surface of a vehicle in a 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 a vehicle when the robot is moved leftward.
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 a first pipe and a second pipe. FIG. 12C is a schematic cross-sectional view of a roller showing a state in which a protective layer forming material is supplied to the roller, and FIG. 12C is a schematic cross-sectional view of a roller showing a state in which the first pipe is shut off and the protective layer forming material is supplied to the second pipe. is there.
FIG. 13 is a schematic perspective view of a roller showing a state in which 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]
DESCRIPTION OF SYMBOLS 10 ... Coating apparatus 12 ... Transport line 14 ... Vehicle 16a-16c ... Robot 18 ... Control part 20 ... Tank 22 ... Coating material pipeline 23a, 23b ... Tube 30 ... Slide rail 32 ... Pump 34 ... Roller mechanism part 40, 76 ... Base 48: Roller 48a: Coating member 48b: Opening 78, 80: Pneumatic cylinders 78a, 80a: Rod 82: Swing shaft 84: Swing member 86: Holders 111a, 111b: Connection members 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 provided near the transport line of the vehicle and capable of teaching operation;
A roller mechanism connected to the robot and rotatably supporting a roller,
A first supply unit that supplies a liquid protective layer forming material that acts as a peelable protective layer after drying to one end of the roller;
A second supply unit that supplies the protective layer forming material to the other end of the roller;
Has,
A first pipe member having one end connected to the first supply unit and the other end closed, and a plurality of nozzle holes provided in an outer peripheral portion;
A second pipe member which is 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 of which is closed, and a plurality of nozzle holes are provided in an outer peripheral portion;
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 provided inside the roller. A substantially cylindrical collar member having an opening leading to
A coating device for a protective layer forming material, comprising: The coating device for a protective layer forming material according to claim 1,
An apparatus for applying a protective layer forming material, comprising: a fitting portion for engaging the other end of the first pipe member with the other end of the second pipe member. The coating device for a protective layer forming material according to claim 1 or 2,
The said 1st pipe member and the said 2nd pipe member are different lengths, The coating device of the protective layer forming material characterized by the above-mentioned. The protective layer forming material coating apparatus is characterized in that the material of the protective layer forming material is an acrylic copolymer agent.

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