JPS6238022B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a brush coating device suitable for applying a blackout paint after top coating of an automobile body or the like.

[Conventional technology]

Conventionally, in the painting process of automobile bodies, blackout painting is performed on specific parts after top coating. As shown in FIG. 3, blackout painting is done by passing air from outside of the car body 50 through the air circulation openings 54 and 55, such as the radiator grille 52 and louver roof side vents 53 of the car body 50, as shown in FIG. If the top coat color (particularly a light color) painted on the car body 50 at each part of the support 56 and roof side air vent 57 is visible, from the viewpoint of appearance, it is recommended to apply black paint only to the visible parts. be. Therefore, most of the time it is covered by local coating.

Since the painting method is performed by air atomization, the coating efficiency of the paint is naturally low, and more than half of the sprayed paint becomes overspray. The current situation is worrying.

Currently, the measures shown in FIGS. 4 and 5 are taken as measures against overspray that are generally implemented.

(1) As shown in Fig. 4, each time a blackout painting is performed, a masking material 60 such as masking paper or tape is applied to the overspray area around the blackout painting area 61, leaving only the blackout painting area 61, and then applying the masking material 60. A masking material method in which a masking material 60 is fixed with multiple strips of adhesive tape 62 and a blackout paint is applied.

(2) As shown in FIG. 5, a special masking jig 70 in which an opening 72 corresponding to the blackout coating area 71 is formed is prepared in advance, and each time the blackout coating is performed, the coating area 71 is
A masking jig method for applying blackout paint.

It is.

[Problem that the invention seeks to solve]

However, when using the former masking material method, it is necessary to set and adhere the masking material each time blackout painting is performed, which not only makes the masking work complicated, but also requires 600 ml of masking material to be applied each time blackout painting is completed. Also, there is a problem that the adhesive tape 62 must be discarded.

In addition, when using the latter masking jig method, it is easy to set it on the painting area, and
Although the masking jig 73 can be reused, it has the disadvantage that masking must be done manually.

Furthermore, both the former and latter methods serve as a barrier to automation of masking during unmanned operations, preventing progress in automation. what if,
Even if there are cases where it is possible to automate masking,
Investing in an automatic masking device has problems such as requiring several times the cost of a paint machine, so even if the front radiator grille 52 side can be automated, the roof side vent 53 that coexists with the outer panel surface Masking is difficult to handle, and workers have no choice but to handle it manually, and it is still difficult to automate masking.

Therefore, the present invention was made to solve the above-mentioned problems, and includes forming an insertion hole at one end of the base block, and providing a hollow handle having a brush at the tip of the insertion hole. By using a brush coating device, blackout coating can be performed without masking with masking materials, masking jigs, etc.

[Means for solving problems]

That is, in the brush coating device according to the present invention, a fitting hole is formed at one end of the base block, and a hollow handle is fitted into the fitting hole. Further, a brush is inserted through the tip of the handle, and a part of the brush is inserted through the handle and fixed, and the other part is protruded from the tip of the handle.

Further, a paint supply hole communicating with the insertion hole is formed on one side of the base block, and a supply pipe having one end leading to a paint supply source is connected to this paint supply hole via a valve.

When the valve is opened, the paint passes through the supply pipe from the paint supply source, passes through the paint supply hole of the base block, the insertion hole, and the hollow part of the handle, and is supplied to the brush fixed to the tip of the handle. When the valve is closed, the paint supplied to the brush from the paint supply source is cut off.

Furthermore, the brush coating device according to the present invention has a fitting hole formed on the opposite side of the fitting hole into which the arm of the painting robot is fitted into the base block configured as described above, and the brush coating device is used during painting. It can be attached to a painting robot to perform painting.

[Effect]

In such a brush coating device, when applying paint to an object to be coated, the brush coating device is held by hand,
The brush fixed to the tip of the handle is brought into contact with the painting part of the object to be painted. Next, the valve is activated to open the paint passage. At this time, paint is supplied from the paint supply source through the supply pipe, through the paint supply hole of the base block, through the insertion hole, and the hollow part of the handle, to the brush fixed to the tip of the handle. In this state, the brush coating device is operated and the brush is moved to the area to be coated while painting.

Then, when the painting on the designated area is completed, the valve is closed to block the paint passage.
Cut the paint supplied from the paint supply source. This completes one cycle of painting the part of the object to be painted, and prepares for the next painting of the object to be transported.

In addition, when installing the brush painting device on a painting robot and painting, the arm of the painting robot is inserted into the fitting hole formed in the base block, and the painting robot is programmed according to a previously taught program. Then move the brush coating device and apply the paint to the area to be painted.

〔Example〕

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a brush coating apparatus according to the present invention will be described in detail below with reference to the drawings.

FIG. 1 shows a sectional view of a brush coating device according to the present invention.

In FIG. 1, 1 is a brush coating device,
In this brush painting device 1, a fitting hole 3 is formed at one end of a base block 2 formed in the shape of a rectangular parallelepiped, and a paint supply hole 4 communicating with the fitting hole 3 is formed at the center of the upper part. Further, a handle 5 formed in a cylindrical shape is sealed and inserted into the insertion hole 3, and a stopper plug 6 made of a non-metallic material is inserted into the rear end of the interior of the handle 5. A passage 6a is formed in the center thereof in the longitudinal direction.

In addition, the inside of the handle 5 contains glass fiber, sawdust,
A liquid core 7 made of a piece of fiber or the like is filled, the rear end of which contacts the stopper 6, and the other end of which extends to the vicinity of the tip inside the handle 5. A brush 8 made of plastic material, bristles, etc. is provided at the tip of the handle 5, the rear end contacts the tip of the liquid core 7 filled inside the handle 5, and the other end contacts the tip of the liquid core 7 filled inside the handle 5. Pattern 5
It protrudes from the tip. Further, a collar 9 is fixed to the approximate center of the handle 5, and a spring 10 is provided between the collar 9 and the base block 2 to always bias the collar 9 forward.

Furthermore, a fitting hole 11 is formed in the base block 2 on the side opposite to the fitting hole 3, into which the arm of the painting robot is fitted. When the painting robot is attached to the painting robot for painting, the arm of the painting robot is fitted into the fitting hole 11 of the base block 2, and the arm of the painting robot is inserted into the fitting hole 11 of the base block 2 according to the program taught to the painting robot. is starting to work.

Further, on the upper surface of the base block 2, there is provided a valve 12 formed in a cylindrical shape from a metal material. This valve 12 has a rectangular parallelepiped-shaped main body 13 fixed by bolts (not shown).
A first passage 14 extending laterally is formed in the side surface thereof. Further, in the lower part of the main body 13, there is a second passage 15 which communicates with the first passage 14 in the horizontal direction in the center and the paint supply hole 4 formed in the base block 2.
is formed, and a valve 16 made of a metal material is provided at the bottom thereof.

Further, a space 17 communicating with the second passage 15 is formed in the upper part of the main body 13, and an introduction pipe 18 for supplying compressed air is connected below the space 17 so as to supply compressed air into the space 17. It's getting old.
Further, a piston 19 is tightly disposed within the space 17, a spring 20 is disposed on the upper surface of the piston 19, and a needle 19a of the piston 19 passes through the second passage 15 and is inserted into the valve 16. has been done.

When compressed air is introduced into the space 17 from the introduction pipe 18, the piston 19 rises against the resistance of the spring 20, and the needle 19a
The insertion relationship between the valve 16 and the valve 16 is released, and the second passage 15
The paint supply hole 4 of the base block 2 communicates with each other, and when the supply of compressed air into the space 17 is stopped, the piston 19 descends due to the resistance of the spring 20, and the needle 19a
The tip of the paint supply hole 4 of the base block 2 is inserted into the valve 16, and communication between the second passage 15 and the paint supply hole 4 of the base block 2 is closed.

2. Further, a paint tank 21 is disposed near the valve 12, and a blackout paint M is stored inside the tank 21. This paint tank 21 is provided with a lid 23 on the top of a container body 21, and a pipe 24 for supplying compressed air into the interior of the container body 21 is connected to the top of the lid 23. Also,
A plurality of clampers 25 are provided on the upper part of the container body 21, and the lid 23 is tightened to the container body 21 to prevent compressed air and blackout paint M from flowing out.

Further, a supply pipe 26 is disposed between the paint tank 21 and the valve 12, one end of which is connected to the bottom 22a of the container body 22, and the other end connected to the first passage 14 of the valve 12. There is. As a result, the blackout paint M contained in the paint tank 21 is always filled up to the upper surface of the valve 16 provided in the second passage 15 of the valve 12.

In the brush painting device configured as described above, a method of painting a louvered roof side Wb portion of an automobile body W will be explained using an example in which the brush painting device is mounted on a painting robot as shown in FIG. .

In FIG. 2, reference numeral 30 denotes an articulated painting robot.
A base 30a is movably provided on the base 30a, and an arm pivot shaft 30b is rotatably provided on the base 30a.
An arm vertical shaft 30c is provided at the center of the arm pivot shaft 30b so as to be swingable in the front-rear direction (horizontal direction in FIG. 2); a horizontal arm shaft 30d, and a wrist mechanism 30 provided at the tip of the horizontal arm shaft 30d.
It consists of e. A cylinder 30f is provided at the arm rotation axis 30b and the arm vertical axis 30c.
When the arm vertical shaft 30c is activated, the arm vertical shaft 30c swings back and forth, and when the cylinder 30g provided on the arm rotation shaft 30b and the arm horizontal shaft 30d is activated, the arm horizontal shaft 30d swings up and down. I'm starting to do that.

Blackout paint M is applied to the painted area Wb of the louver roof side vent Wa of the automobile body W.
When painting, first, the fitting hole 11 formed in the base block 2 of the brush painting device 1 is fitted and fixed to the tip of the wrist mechanism 30e of the painting robot 30, and the paint tank 21 is inserted into the painting robot 30. is fixed to the rear end of the horizontal arm shaft 30d. Next, the painting robot 30 is taught the order of painting the parts Wb of the automobile body W to be painted with the blackout paint M.

When teaching the painting area Wb of the automobile body W, the teaching point varies depending on the size and shape of the automobile body W and the painting equipment, but generally speaking, the teaching point is set in advance using a direct teaching method or Using the remote teaching method, the painting robot 30 is operated to control the arm rotation axis 30b, the arm vertical axis 30c, and the arm horizontal axis 30d.
Then, the wrist mechanism 30e guides the robot to the painting area Wb and teaches the painting order to the teaching points planned in advance.

During this time, a teaching command switch (not shown) is pressed to move the arm rotation axis 30b, the arm vertical axis 30c,
Information on the position and orientation of the arm horizontal axis 30d and the wrist mechanism 30e is sequentially input and stored in a control device (not shown). In this way, when the teaching of the target position and orientation is completed, a program for the desired painting order of the painting robot 30 is input. When applying the blackout paint M, the stored information is reproduced in the brush painting device 1 according to the input program and the painting is performed sequentially.

That is, when the automobile body W is transported near the painting robot 30, the painting robot 30 is activated. At that time, the arm rotation axis 30b, the arm vertical axis 3
0c, the arm horizontal shaft 30d and the wrist mechanism 30e operate according to the stored program, and the brush 8 provided at the tip of the handle 5 of the brush painting device 1 is applied to the blackout paint application area Wb of the automobile body W. come into contact with

At the same time, compressed air is supplied to the space 17 from the introduction pipe 18 of the valve 12, and the piston 19 and needle 19a rise. Along with that,
When the valve 16 is opened, the blackout paint M stored in the paint tank 21 is transferred to the supply pipe 26,
It passes through the first passage 14, the second passage 15, the paint supply hole 4, the fitting hole 3, and the passage 6a of the stopper 6 to reach the liquid core 7. The blackout paint M that has reached the liquid core 7 is absorbed and stored in the liquid core 7 and reaches the tip of the brush 8. In this state, the painting robot 30 operates according to the previously programmed movement, following the movement of the automobile body W to paint the painting area.
Blackout paint M is applied to Wb.

When the painting of the specified painting area Wb is completed, the supply of compressed air to the introduction pipe 18 is stopped, and at the same time, the piston 19 and the needle 1
9a is lowered by the spring force of the spring 20, the valve 16 is closed, and the supply of the blackout paint M is stopped. Further, the painting robot 30 operates each axis 30b, 30 according to the stored program.
c, 30d and the wrist mechanism 16, the brush 8 of the brush coating device 1 is applied to the coating area of the automobile body W.
Move away from Wb. And painting robot 30
returns to its original position according to the stored program and prepares for painting the next automobile body W to be transported.

At this time, if the painting robot 30 is not used for a long time, such as during a lunch break, the teaching method is repeated in the same manner as described above, and the collar 9 of the brush painting device 1 is brought into contact with the lid 34 of the humidifier 33. Insert until handle 5
The brush 8 provided at the tip of the brush 8 is immersed in the organic solvent Ma contained in the container 35 and left to wait. Thereby, even after a long period of stoppage, the brush coating device 1 can be maintained in good condition when it is reactivated.

In this embodiment, the brush coating device 1 is installed on the painting robot 30. However, in the present invention, the brush coating device 1 is not installed on the painting robot 30, and the brush painting device 1 can be installed manually by the operator. You can also hold it and paint it.

〔Effect of the invention〕

As explained above, in the brush painting device according to the present invention, a fitting hole is formed at one end of the base block, and a hollow handle having a brush at the tip is provided in this fitting hole, so that it is different from the conventional brush painting device. This has the effect that blackout paint can be applied without masking areas other than the areas to be painted.

Moreover, in the brush coating device according to the present invention,
Since the blackout paint can be applied without using a masking material or a masking jig, the blackout paint can be applied economically and in a short time.

Moreover, in the brush coating device according to the present invention,
By attaching this brush coating device to a coating robot, it is possible to automatically apply blackout paint.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of a brush coating device according to the present invention. FIG. 2 is a front view of a painting robot in which the brush painting device of the present invention is mounted on a painting robot. FIG. 3 is a perspective view of an automobile body showing areas coated with blackout paint. FIGS. 4 and 5 are enlarged perspective views illustrating a conventional blackout paint coating method. 1...Brush coating device, 2...Base block,
3...Insertion hole, 4...Paint supply hole, 5...Handle, 6
...Stopper, 7...Liquid core, 8...Brush, 9...
Tsuba, 10... Spring, 11... Fitting hole, 12
...Valve, 13...Body, 16...Valve, 19...
... Piston, 19a ... Needle, 20 ... Spring, 21 ... Paint tank, 21 ... Container body, 23 ... Lid, 26 ... Supply pipe, M ... Blackout paint.

Claims (1)

[Scope of Claims] 1. A fitting hole is formed at one end of the base block, a hollow handle is fitted into the fitting hole, and a part of the brush is inserted and fixed to the tip of the handle, A brush painting device characterized in that a paint supply hole communicating with the insertion hole is formed on one side of the base block, and a supply pipe having one end leading to a paint supply source is connected to the paint supply hole via a valve. 2. The brush painting device according to claim 1, wherein a fitting hole into which an arm of a painting robot is fitted is formed on the opposite side of the fitting hole of the base block.