JP2020203245A - Paint spray gun support device - Google Patents

Abstract

To provide a paint spray gun support device which eliminates a need of washing of a spray gun and a paint hose during a change of a color and enables color changing work to be performed easily in short time.SOLUTION: A paint spray gun support device is connected to an arm of a painting machine while supporting spray guns 21. The paint spray gun support device includes a body part 2 and a support part 9 which is rotatably attached to the body part and in which the spray guns are attached to tip parts. The support part includes: a base end part rotatably connected to the body part; an arm part 12 having a pair of support arms 13 which is connected to the base end part and in which the spray guns are connected to tips; an air supply passage and a paint supply passage for supplying air and paint to the respective spray guns; a joint for paint supply for connecting a paint hose to the paint supply passage; and a joint for air supply for connecting an air hose to the air supply passage. The body part includes driving means for rotating the support part.SELECTED DRAWING: Figure 1

Description

The present invention relates to a spray gun support device for painting, and more particularly, to a spray gun support device for painting which enables easy color change of a paint at the time of painting.

Conventionally, a coating apparatus has a spray gun for spraying paint on an object to be painted (hereinafter referred to as "work") and a paint supply means for supplying paint to the spray gun via a paint hose. While supplying paint to the spray gun from the paint supply means, the supplied paint is sprayed from the spray gun toward the work, but when changing the color of the paint when painting the work, the spray gun A method has been adopted in which the paint is supplied to the spray gun while changing the color of the paint to be supplied with only one spray gun without changing the paint.

Here, to explain the method of changing the color of the conventional paint, FIG. 9 is a conceptual diagram for explaining the method of changing the color of the conventional paint. In the figure, 51 is a spray gun, 53 is a manifold, and Reference numeral 52 denotes a paint hose for supplying paint to the spray gun 51.

Then, in FIG. 9, paint A and paint B having different colors are supplied to the spray gun 51 via the manifold 53 as a supply system. That is, in FIG. 9, 54 is a tank for storing paint or a cleaning agent, 54a is a tank for paint A, 54b is a tank for paint B, and 54c is a tank for cleaning agent, and the paint tank 54a and The base ends of the supply path 55a for the paint A and the supply path 55b for the paint B are arranged in the 54b, respectively, and the base end of the supply path 55c for the cleaning agent is arranged in the tank 54c for the cleaning agent. Is placed.

Further, the tips of the supply path 55a for the paint A, the supply path 55b for the paint B, and the supply path 55c for the cleaning agent are each connected to the paint hose 52 in the manifold 53.

Further, pumps 56a, 56b, 56c and on-off valves 57a, 57b, 57c are interposed in the supply paths 55a for the paint A, the supply path 55b for the paint B, and the supply path 55c for the cleaning agent, respectively. There is.

With this configuration, when painting with the paint A, the opening / closing valve 57b of the supply path 55b for the paint B and the opening / closing valve 57c of the supply path 55c for the cleaning agent are closed, and the supply path 55a for the paint A is closed. The on-off valve 57a is opened to drive the pump 56a of the supply path 55a for the paint A. Then, the paint A in the tank 54a for the paint A is supplied to the spray gun 51, whereby the work can be painted by the paint A.

Next, when painting with the paint B after the painting with the paint A is completed, first, the open / close valve 57a of the supply path 55a for the paint A and the open / close valve 57b of the supply path 55b for the paint B are closed. , The opening / closing valve 57c of the supply path 55c for the cleaning agent is opened to drive the pump 56c of the supply path 55c for the cleaning agent. As a result, a cleaning agent is supplied to the spray gun 51 to clean the inside of the paint hose 52 and the spray gun 51.

After that, the open / close valve 57a of the supply path 55a for the paint A and the open / close valve 57c of the supply path 55c for the cleaning agent are closed, and the open / close valve 57b of the supply path 55b for the paint B is opened to open the open / close valve 57b for the paint B. It drives the pump 56b of the supply path 55b. Then, the paint B in the tank 54b for the paint B is supplied to the spray gun 51, and the work can be painted by the paint B.

Therefore, according to this method, paints of a plurality of colors can be supplied to the spray gun 51, and painting with a plurality of paints can be performed by one spray gun.

Japanese Unexamined Patent Publication No. 2015-21937 JP-A-2015-223549 Japanese Unexamined Patent Publication No. 10-066909 Japanese Unexamined Patent Publication No. 10-156239 Japanese Unexamined Patent Publication No. 10-000400

However, when such a method is adopted, the spray gun and the paint hose must be cleaned every time the color of the paint is changed, which does not endure the trouble and reduces the work efficiency. I was invited.

In addition, when the spray gun and the paint hose are cleaned every time the paint is changed in color, the paint remaining in the hose is wasted and a cleaning solvent such as thinner is required, which is wasteful. .. In particular, since the number of high-mix low-volume production workpieces has increased in recent years, in the conventional method, the reduction in work efficiency due to such cleaning work, the waste of residual paint, and the use of cleaning solvent also increase the cost. It was connected.

In this regard, when changing the color of the paint, it is possible to remove the spray gun from the painting machine and replace it. According to this method, the spray gun and the paint hose are cleaned every time the paint is changed. Although it is not necessary, this method has a problem that the work of attaching and detaching the spray gun is difficult and the work efficiency is poor.

Therefore, the present invention makes it unnecessary to clean the spray gun and the paint hose when changing the color of the paint at the time of painting, and the color change work can be easily performed in a short time. The challenge is to provide a support device.

The spray gun support device for painting of the present invention
A spray gun support device that is mounted on a painting machine while supporting a plurality of spray guns.
The main body attached to the painting machine and
A support portion that is rotatably attached to the main body portion and to which a spray gun is mounted is provided at the tip portion.
The support portion
A base end portion rotatably connected to the main body portion and
A pair of arm portions, which are connected to the base end portion and to which a spray gun is connected to each tip, are provided.
Air supply path and paint supply path for supplying air and paint to each spray gun,
It is provided with an air supply joint for connecting an air hose to the air supply path and a paint supply joint for connecting the paint hose to the paint supply path.
The main body is characterized by being provided with a driving means for rotating the support.

The spray gun support device for painting of the present invention has a main body portion mounted on the painting machine and a support portion rotatably attached to the main body portion, and the support portion has a spray gun at each tip portion. Has a pair of support arms to which they are connected.

Therefore, by changing the color of the paint supplied to the spray guns connected to the tips of the pair of support arms to different colors, the spray guns used can be replaced and the paint color can be changed simply by rotating the support arms. It can be performed, and the color change can be easily performed in a short time.

Further, in the spray gun support device for painting of the present invention, it is not necessary to clean the spray gun and the paint hose every time the color of the paint is changed, so that the paint and the cleaning solvent such as thinner are not wasted. It was.

It is a perspective view for demonstrating the Example of the spray gun support device for painting of this invention. It is a perspective view for demonstrating the Example of the spray gun support device for painting of this invention. It is a partial cross-sectional view for demonstrating the internal structure of the Example of the spray gun support device for painting of this invention. It is a perspective view for demonstrating the internal structure of the Example of the spray gun support device for painting of this invention. It is a figure for demonstrating the joint in the Example of the spray gun support device for painting of this invention. It is sectional drawing for demonstrating the spray gun in the Example of the spray gun support device for painting of this invention. It is a perspective view which shows the example of the spray gun support device for painting of this invention attached to the painting robot. It is a perspective view which shows the example of the spray gun support device for painting of this invention attached to the painting robot. It is a figure for demonstrating the outline of the conventional color change method.

The spray gun support device of the present invention is a spray gun support device mounted on a coating machine in a state of supporting a plurality of spray guns, and has a main body portion connected to the coating machine. The support portion is rotatably attached.

The support portion has a base end portion that is rotatably connected to the main body portion, and a pair of support arms are continuously provided at the base end portion, and the tips of the pair of support arms are connected to the base end portion. A spray gun is to be connected to each.

Further, the support portion is formed with an air supply path and a paint supply path for supplying air and paint to the spray guns connected to the tips of the pair of support arms.

Further, the support portion is provided with an air supply joint for connecting the air hose to the air supply path and a paint supply joint for connecting the paint hose to the paint supply path.

On the other hand, the main body portion is provided with a driving means for rotating the support portion, and it is preferable to use a rotary actuator as the driving means. By connecting the rotating portion and the supporting portion of the rotary actuator with a gear, , It is preferable that the support portion can be rotated, which makes it possible to easily rotate the support portion.

When the embodiment of the spray gun support device for painting (hereinafter, simply referred to as “spray gun support device”) of the present invention will be described with reference to the drawings, FIGS. 1 to 4 show the spray gun support device of the present embodiment. 1 is a view for explanation, FIG. 1 is a perspective view shown from the front side, FIG. 2 is a perspective view shown from the back side, FIG. 3 is a partial sectional view showing an internal structure, and FIG. It is a perspective view of the state which showed the part, and 1 in the figure is a spray gun support device of this Example.

The spray gun support device 1 of the present embodiment has a main body portion and a support portion rotatably attached to the main body portion, and the support portion supports two spray guns. It is supposed to be attached to the arm of the painting machine.

That is, in the figure, reference numeral 2 denotes a main body portion, and in this embodiment, the main body portion 2 is attached to the arm of a stationary painting robot. Explaining this relationship, 35 is a part of the arm of the painting robot in the figure, and the arm shown in the figure is a ball screw spline that is movable in the longitudinal direction and is rotatable.

On the other hand, in the figure, reference numeral 3 denotes a joint portion for connecting the main body portion 2 to the arm 35 of the painting robot, and the joint portion 3 is formed in the main body portion 2. That is, the spray gun support device 1 in this embodiment is attached to the painting robot by connecting the ball screw spline 35 of the painting robot and the joint portion 3. However, the coating machine to which the spray gun support device of the present invention is mounted is not necessarily limited to the arm of the stationary coating robot, but also to the arm of the ceiling-mounted coating machine movably connected to the rail. You may wear it.

Next, in the figure, 9 is a support portion, and the support portion 9 is a base end portion 10, an intermediate portion 11 connected to the base end portion 10, and an arm portion connected to the intermediate portion 11. It has 12 and. The arm portion 12 has a pair of support arms 13, and a spray gun 21 is attached to each of the tip portions of the pair of support arms 13.

Here, in FIG. 3, in the main body 2, the main chamber 4 and the gear chamber 6 are arranged next to each other via the partition wall 5, and the base end portion 10 of the support portion 9 is inside the main chamber 4. The arm portion 12 is rotatably fixed via a bearing, and is connected to the main body portion 2 in a state where the arm portion 12 protrudes from the main body portion 2 while penetrating the partition wall 5. The intermediate portion 11 is located in the gear chamber 6, and the gear 14 is provided around the outer peripheral side thereof.

Further, an arm portion 12 is continuously provided on the anti-base end side of the intermediate portion 11, and the arm portion 12 protrudes from the main body portion 2 as described above, and is lateral to both sides of the main body portion 2. It has a pair of support arms 13 that are continuously provided in the direction, and a spray gun 21 is attached to each of the tips of the pair of support arms 13.

On the other hand, in the main chamber 4, a rotary actuator 7 is arranged as a driving means for rotating the support portion 9, and the rotation shaft of the rotary actuator 7 is extended into the gear chamber 6 and is also extended. A gear 8 is provided around the circumference of the gear 8, and the gear 8 is meshed with a gear 14 provided around the outer periphery of the intermediate portion 11 in the gear chamber 6. As a result, by driving the rotary actuator 7, the support portion 9 can be rotated and the spray gun attached to the tip of the support arm 13 can be replaced. In this embodiment, the base end portion 10 and the intermediate portion 11 have a cylindrical shape, but the shape is not particularly limited.

Here, the spray gun mounted on the pair of support arms 13 will be described with reference to FIG. 6. FIG. 6 is a cross-sectional view for explaining the structure of the spray gun, and in the figure, 21 is a spray gun. is there. The spray gun 21 has a paint supply path formed inside, receives the paint supplied from the paint supply means, and makes it possible to spray the received paint.

That is, in the figure, 22 is a paint supply path, and the paint supply path 22 is a paint receiving port 22a for receiving the paint and a paint injection port 22b for ejecting the paint received from the paint receiving port 22a toward the work. The paint receiving port 22a is opened on the side wall side of the spray gun 21, and the paint injection port 22b is opened on the tip surface of the spray gun 21.

Next, in FIG. 6, reference numeral 23 denotes a needle for opening and closing the paint injection port 22b, and the needle 23 is made movable in the front-rear direction of the spray gun 21 by the needle operating means, and is moved forward. The paint injection port 22b is closed and retracted to open the paint injection port 22b.

Here, the needle operating means will be described. In this embodiment, the paint supply path 22 extends from the paint injection port 22b to the rear side of the spray gun 21 by an arbitrary distance, and then moves toward the side wall of the spray gun 21. The paint receiving port 22a is opened on the side wall of the spray gun 21 while changing the course toward the direction.

On the other hand, the needle 23 is arranged in the spray gun 21 so as to penetrate the central portion of the spray gun 21, the tip side is located in the paint supply path 22, and the base end side is in the spray gun 21. A piston 24 that is movable in the front-rear direction is fixed in the spray gun 21 at a portion that protrudes from the paint supply path 22 and protrudes from the paint supply path 22. Then, the piston 24 is urged toward the tip of the spray gun 21 by the spring 25, whereby the needle 23 normally moves toward the tip of the spray gun 21 together with the piston 24, and the paint injection port 22b at the tip portion. Is closed.

Next, inside the spray gun 21, an air chamber 26 is formed on the anti-spring side of the piston 24, the proximal end side is opened by the side wall of the spray gun 21, and the tip end side is connected to the air chamber 26. Further, an air supply path 27 for operating the needle is formed. An air supply means (not shown) is connected to the opening on the base end side of the needle operation air supply path 27, and air is supplied from the air supply means to form the needle operation air supply path 19. Air is supplied into the air chamber 26 via the air chamber 26, the piston 24 is pressed toward the proximal end side in the spray gun 21, and the needle 23 moves to the proximal end side of the spray gun 21 accordingly, and the tip of the needle 23 The closure of the paint injection port 22b is released. Therefore, by supplying air to the air chamber 26 or removing the supplied air, it is possible to operate the needle 23 to open and close the paint injection port 22b. However, the spray gun used in the present invention does not necessarily have to operate the needle 23 in the above-described configuration, as long as the paint injection port 22b can be opened and closed by moving the needle 23 in the front-rear direction of the spray gun 21. , Any configuration may be used.

Next, in the figure, reference numeral 28 denotes an atomized air supply path. That is, the spray gun 21 used in this embodiment is formed with an atomized air supply path 28 for atomizing the paint discharged from the paint injection port 22b and injecting the paint toward the work. The tip of the atomized air supply path 28 is opened at an arbitrary position around the paint injection port 22b, and the proximal end side is connected to the atomized air supply means (not shown). When air is supplied, atomized air is supplied around the paint injection port 22b via the atomized air supply path 28, and it is possible to atomize the paint discharged from the paint injection port 22b.

Next, in the figure, 29 is a pattern air supply path. That is, the spray gun 21 used in this embodiment is formed with a pattern air supply path 29 for changing the ejection pattern of the paint atomized by the atomized air to an arbitrary pattern. The tip of the pattern air supply path 29 has an opening 2901 outside the opening of the tip of the atomized air supply path 28, and the base end side is a pattern air supply means (not shown). When air is supplied, the pattern air is supplied around the opening at the tip of the atomized air supply path 28 via the pattern supply path 29, and the paint atomized by the atomized air is supplied. It is possible to change the ejection pattern.

Then, in the support portion 9, a paint supply for supplying paint, needle operating air, atomized air, and pattern air to the spray guns 21 mounted on the respective tips of the pair of support arms 13. A path, a needle air supply path, an atomized air supply path, and a pattern air supply path are formed, and these paint supply path, needle air supply path, atomized air supply path, and pattern air supply path are separated from each other. That is, they are formed in pairs.

Next, in FIG. 4, a joint for supplying paint and air to the spray gun 21 is provided on the end surface side of the back surface of the base end portion 10. Explaining this joint, FIG. 5 is a view showing the inside of the main body 2 from the back surface side. In the drawing, a paint joint 15, a needle air joint 16, and a mist are formed on the end surface of the base end portion 10. A pair of chemical air joints 17 and pattern air joints 18 are formed.

Each of these joints is communicated with and supported by a paint supply path, a needle air supply path, an atomized air supply path, and a pattern air supply path (none of which are shown) formed in the support portion 9. The paint supply path, the needle air supply path, the atomized air supply path, and the pattern air supply path formed in the portion 9 are the paint receiving port 22a in the spray gun 21 connected to the support arm 13 at the tip of the support arm 13. , Needle operating air supply path 27, atomized air supply path 28, and pattern air supply path 29.

In addition, paint hoses and air hoses are connected to these joints during use, and paint and various types of air can be supplied to the spray gun by supplying paint and air from these paint hoses and air hoses. It is possible.

Next, the method of using the spray gun for painting of the present embodiment configured as described above will be described. FIG. 7 and FIG. 8 show the spray gun support device 1 of the present embodiment and the spray gun 21 on the support arm 13. It is the figure which showed the state which attached to the ball screw spline of the painting robot in the supported state.

In the figure, 31 is a painting robot, and the painting robot 31 has a main body pillar 32. A first arm 33 is rotatably connected to the main body pillar 32 in the vertical direction, and the first arm is connected to the main body pillar 32. A second arm 34 is rotatably connected to the 33 in the vertical direction. A long ball screw spline 35 is connected to the tip of the second arm 34, and the ball screw spline 35 is movable in the width direction of the second arm 34, that is, in the left-right direction, and is circular. It is rotatable along the circumferential direction.

Then, the spray gun support device 1 of this embodiment is used by being attached to both ends of the ball screw spline 35 in the painting robot 31. That is, the main body 2 is connected to both ends of the ball screw spline 35 with the spray gun 21 attached to each of the pair of support arms 13. Then, a paint hose, a needle air supply hose, and a mist are provided on the end face side of the base end portion 10, respectively, of the paint joint 15, the needle air joint 16, the atomized air joint 17, and the pattern air joint 18. The chemical air supply hose and the pattern air supply hose are connected.

Then, when the work is painted with a spray gun supported on one of the support arms 13 and then the color is changed, the rotary actuator 7 is operated to rotate the support portion 9 by about 180 degrees. Then, the spray gun 21 capable of painting the work is replaced, which makes it possible to paint the work with paints of different colors.

As described above, in the spray gun support device of the present embodiment, since the spray gun can be replaced only by rotating the support portion, it is possible to easily change the color of the paint in a short time.

Further, since it is not necessary to clean the spray gun and the paint hose every time the paint is changed in color, the paint and the cleaning solvent are not wasted when changing the color of the paint.

Furthermore, since a joint for connecting the paint hose and various air hoses is provided on the back end surface of the support part, the hose does not get entangled even when the support part is rotated to replace the spray gun. , It is possible to easily rotate.

The spray gun support device for painting of the present invention is a painting device that requires a color change of paint because the spray gun used can be replaced only by rotating the arm that supports the spray gun. Applicable to all.

1 Spray gun support device 2 Main body 3 Joint part 4 Main room 5 Partition 6 Gear room 7 Rotary actuator 8 Rotary actuator side gear 9 Support part 10 Base end 11 Intermediate part 12 Arm part 13 Support arm 14 Support part side gear 15 Paint Gear 16 Needle air joint 17 Atomized air joint 18 Pattern air joint 21 Spray gun 22 Paint supply path 22a Paint receiving port 22b Paint injection port 23 Needle 24 Piston 25 Spring 26 Air chamber 27 Needle operating air supply path 28 Fog Geared air supply path 29 Pattern air supply path 31 Painting robot 32 Main body pillar 33 1st arm 34 2nd arm 35 Ball screw spline

Claims (4)

A spray gun support device for painting that is mounted on a painting machine (31) while supporting a plurality of spray guns (21).
The main body (2) connected to the painting machine (31) and
A support portion (9) that is rotatably attached to the main body portion (2) and to which a spray gun (21) is mounted is provided at the tip portion.
The support portion (9) is
A base end portion (10) rotatably connected to the main body portion (2),
An arm portion (12) having a pair of support arms (13) to which a spray gun (21) is connected to each tip, which is connected to the base end portion (10), is provided.
An air supply path and a paint supply path for supplying air and paint to each spray gun (21),
A paint supply joint (15) for connecting a paint hose to the paint supply path and an air supply joint (16, 17, 18) for connecting an air hose to the air supply path are provided.
A spray gun support device for painting, wherein the main body portion (2) is provided with a driving means (7) for rotating the support portion (9). The first aspect of claim 1, wherein the drive means (7) is a rotary actuator, and the support portion (9) can be rotated by connecting the rotary actuator and the support portion (9) with a gear. Spray gun support device for painting. The spray gun support device for painting according to claim 1 or 2, wherein the painting machine is a stationary painting robot. The spray gun support device for painting according to claim 1 or 2, wherein the painting machine is a ceiling-mounted painting robot.

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