JP7430552B2 - Spray gun support device for painting equipment - Google Patents

Description

The present invention relates to a spray gun support device for a painting device, and more specifically, the present invention relates to a spray gun support device for a painting device, and more specifically, in a painting device that supports a plurality of spray guns and makes it possible to change colors by switching the spray guns used, the present invention supplies air to the spray guns. The present invention relates to a spray gun support device for a coating device, which is characterized by reducing the size of the entire device by reducing the number of air supply hoses.

Conventionally, painting equipment includes a spray gun for spraying paint onto an object to be painted (hereinafter referred to as a "work") and a paint supply means for supplying paint to the spray gun via a paint hose. The paint is supplied from the paint supply means to the spray gun, and the supplied paint is sprayed from the spray gun toward the workpiece. When changing the color of paint when painting a workpiece, a method is adopted in which paint is supplied to the spray gun while changing the color of the supplied paint using only one spray gun, without changing the spray gun. was.

Here, to explain the conventional color change method, in the conventional color change method, multiple types of paint with different colors can be supplied to one spray gun via a manifold etc. The method is to switch the paint supplied to the spray gun depending on the situation. That is, after painting with one paint is completed, the interior of the spray gun and paint supply hose is cleaned, and then another paint can be supplied to the spray gun using a valve or the like, thereby making it possible to change the color. Therefore, according to this method, it is possible to perform coating with a plurality of paints using one spray gun.

However, if such a method is adopted, the spray gun and paint hose must be cleaned every time the paint color is changed, which is a hassle and reduces work efficiency. I had already invited her.

Furthermore, when cleaning the spray gun and paint hose every time the paint color is changed, the paint remaining in the hose is wasted, and cleaning solvents such as thinner are required, resulting in a lot of waste. . In particular, in recent years there has been an increase in the number of high-mix, low-volume production workpieces, so with conventional methods, such cleaning work reduces work efficiency, wastes leftover paint, and uses cleaning solvents, which also increases costs. We were connected.

Regarding this point, when changing the color, it is possible to remove the spray gun from the paint sprayer and replace it, but this method has the problem that it is difficult to attach and detach the spray gun and the work efficiency is low. .

Therefore, as a way to solve this problem, multiple spray gun support arms each equipped with a spray gun are connected to a manifold, and by rotating the manifold, the spray gun to be used can be switched. A changeable spray gun support device has been proposed, and with this spray gun support device, the color can be changed without replacing the spray gun or cleaning the inside of the spray gun.

Japanese Patent Application Publication No. 2015-211937 Patent No. 5749374

Incidentally, a spray gun generally sprays paint from a discharge port at its tip, and sprays the paint in the form of a mist using atomizing air to paint a workpiece. Also, at this time, the atomized paint is sprayed in a predetermined pattern using pattern air. Furthermore, the discharge port that discharges paint is normally closed by a needle, and when painting, the needle is moved backward to release the discharge port, and after painting is completed, the needle is advanced to close the discharge port. However, this movement of the needle is performed by air for operating the needle.

Therefore, in order to operate one spray gun, in addition to one paint hose, three air hoses must be connected to the spray gun: an atomization air supply hose, a pattern air supply hose, and a needle operation air supply hose. Need to be connected.

In the above-mentioned spray gun support device in which a plurality of spray gun support arms are connected to a manifold and each spray gun support arm is equipped with a spray gun, paint hoses and air hoses corresponding to the number of spray guns are connected. Must be connected to the manifold.

Therefore, with such a spray gun support device, as the number of spray guns increases, the number of paint hoses and air hoses connected to the manifold increases, leading to an increase in the size of the device. is possible. For example, when four support arms are connected to a manifold, in addition to the four paint hoses, three air hoses are required: an atomization air supply hose, a pattern air supply hose, and a needle operation air supply hose. A total of 12 air hoses, 4 each, must be connected to the manifold, which increases the size of the entire painting apparatus.

In addition, with such a spray gun support device, as mentioned above, it is necessary to rotate the manifold when switching the spray gun to be used, which causes the hoses to twist, but the paint hose and air hose connected to the manifold are When the number of hoses increases, it becomes difficult to handle the hoses because they become twisted, and the joints used to connect the hoses to the manifold may break.

Therefore, the present invention provides a painting device that supports multiple spray guns and makes it possible to change colors by switching the spray guns used. An object of the present invention is to provide a spray gun support device for a coating device that can prevent the entire device from increasing in size.

The spray gun support device for coating equipment of the present invention includes:
a support device main body supported by an arm of the coating device;
a spray gun unit equipped with a plurality of spray guns attached to the support device main body;
A spray gun support device for painting, comprising: an air supply means attached to the support device main body for supplying air to the spray gun supported by the spray gun unit,
The spray gun unit includes:
a rotating body rotatably mounted on the support device main body in a horizontal direction;
a spray gun support arm connected to the lower side of the rotating body and having a plurality of arm bodies each having a spray gun attached to its tip side;
Rotating body side paint supply paths corresponding to the number of spray guns are formed in the rotating body,
An arm-side paint supply path connected to the rotating body-side paint supply path and an arm-side air supply path for supplying air to the spray gun are formed inside each of the arm bodies,
The air supply means includes:
a main body portion attached to the support device main body;
a movable part provided inside the main body so as to be movable in the vertical direction;
a movable part side air supply path formed within the movable part;
By lowering the movable part, the arm side air supply path formed in the arm body to which the spray gun to be used is attached is connected to the movable part side air supply path, and the movable part is raised in the connected state. This feature is characterized in that the arm-side air supply path and the movable part-side air supply path are disconnected from each other.

The spray gun support device for a coating device of the present invention includes a main body portion attached to the support device main body, and an air supply means for supplying air to the spray gun, which is movable in the vertical direction inside the main body portion. In addition, by lowering the movable part, the arm side formed in the arm body to which the spray gun to be used is attached is constructed. The air supply path and the movable part side air supply path can be connected. That is, each spray gun shares an air supply means for supplying various types of air to the spray gun. Therefore, even when the number of spray guns increases, it is possible to prevent the entire device from increasing in size.

1 is a top view showing an embodiment of a spray gun support device for a coating device according to the present invention; FIG. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a front view of an embodiment of a spray gun support device for a coating device of the present invention. It is a figure for explaining the spray gun unit in the Example of the spray gun support device for coating equipment of this invention. It is a figure for explaining the spray gun support arm in the Example of the spray gun support device for coating equipment of this invention. It is a figure for explaining the air supply means in the Example of the spray gun support device for coating equipment of this invention. It is a figure for explaining the drive of the spray gun unit in the Example of the spray gun support device for coating equipment of this invention.

The spray gun support device for a coating device of the present invention has a support device main body that is supported by an arm of the coating device. A spray gun unit is attached to the main body of the support device, and the spray gun unit includes a plurality of spray guns.

Further, the support device main body is equipped with an air supply means, and this air supply means is equipped with an air supply means for supplying air to the spray gun provided in the spray gun unit.

The spray gun unit has a rotating body that is horizontally rotatably attached to the support device body, and a spray gun support arm that has a plurality of arm bodies is attached to the lower side of the rotating body. are connected, and a spray gun is attached to each arm body.

In addition, paint supply passages on the rotation body side corresponding to the number of spray guns are formed inside the rotation body, and inside each of the arm bodies that make up the spray gun support arm are connected to the paint supply passages on the rotation body side. An arm-side paint supply path and an arm-side air supply path for supplying air to the spray gun are formed.

On the other hand, the air supply means has a main body part attached to the support device main body, and a movable part is provided inside the main body part so as to be movable in the vertical direction.

A movable part side air supply path is formed inside the movable part, and by lowering the movable part, an arm side air supply path formed in the arm body to which the spray gun to be used is attached, The air supply path on the movable part side is connected. On the other hand, when the arm side air supply passage and the movable part side air supply passage are connected, by raising the movable part, the connection between the arm side air supply passage and the movable part side air supply passage is released. There is.

Here, the spray gun unit and the air supply means are each preferably attached to at least both ends of the support device main body, thereby making it possible to paint the workpiece at two or more locations.

In addition, it is preferable to have four arm bodies and attach a spray gun to each spray gun support arm, thereby making it possible to use at least four different colors of paint by rotating the spray gun unit. .

Then, an endless drive belt is connected to the rotating body that constitutes the spray gun unit, and a motor is connected to this drive belt, and the rotating body is rotated via the drive belt by driving the motor. This makes it possible to easily rotate the rotating body.

Further, the movable part constituting the air supply means is preferably made vertically movable by an air cylinder, thereby making it possible to easily operate the movable part.

The movable part side air supply passage formed inside the movable part and the arm side air supply passage formed inside the arm body constituting the spray gun support arm are respectively an atomizing air supply passage, a pattern air supply passage and It is preferable to use this as an air supply path for operating the needle, thereby making it possible to reliably spray the paint with the spray gun.

An embodiment of the spray gun support device for coating equipment of the present invention (hereinafter simply referred to as "spray gun support device") will be described with reference to the drawings. Figures 1 and 2 show the spray gun support device of the present embodiment. FIG. 1 shows the spray gun support device of this embodiment from the top side, and FIG. 2 shows the spray gun support device of this embodiment from the front side. , is the spray gun support device of this embodiment.

The spray gun support device of this embodiment has a support device main body, and this support device main body is supported by a robot arm of a painting robot serving as a coating device, whereby the spray gun support device of this embodiment 1 is to be attached to a coating device.

That is, in FIG. 2, 22 is a robot arm of a painting robot, and in the figure, 2 is a support device main body, and the support device main body 2 is connected to a mounting member 23 provided at the tip of the robot arm 22. The mounting member 23 is rotatable in the vertical direction and connected to the tip of the robot arm.

The support device main body 2 is formed into a thick long plate, and a spray gun unit is attached to each end of the support device main body 2. That is, in the figure, 3 is a spray gun unit, and in this embodiment, there are two spray gun units 3, and each spray gun unit 3 is equipped with a plurality of spray guns.

Here, the spray gun unit 3 will be explained with reference to FIG. 3. FIG. 3 is a diagram showing a vertical front structure of the spray gun unit 3, and in the figure, 4 is a rotating body. That is, the spray gun unit 3 has a rotating body 4. The rotating body 4 has a cylindrical shape, and is rotatably attached to the support device main body 2 so as to pass through the support device main body 2. In addition, in the figure, 5 is a bearing, and the rotating body 4 is rotatably mounted on the support device main body 2 by this bearing 5.

Next, in the figure, 6 is a spray gun support arm. That is, a spray gun support arm 6 is connected to the lower end of the rotary body 4, and the spray gun support arm 6 has a plurality of arm bodies 19 oriented in a lateral direction perpendicular to the insertion direction of the rotary body 4. A spray gun 7 is attached to the tip of the arm body 19. Since the spray gun support arm 6 is connected to the lower end of the rotating body 4, it rotates with the rotation of the rotating body 4, thereby making it possible to change the position of the spray gun 7.

Note that FIG. 4 is a view showing the spray gun support arm 6 and the spray gun 7 attached to the tip of the arm body 19 from above, and as shown in the figure, in this embodiment, the spray gun support arm 6 is There are four arm bodies 19 that are spaced apart at an angle of about 90 degrees. As a result, each of the spray gun units 3 is equipped with four spray guns, and the support device main body 2 is equipped with eight spray guns in total. However, the number of spray gun support arms 6 is not particularly limited to four, and may be two or three.

Next, in FIG. 3, reference numerals 8 and 9 indicate paint supply paths for supplying paint to the spray gun 7. That is, the rotating body 4 is provided with a number of paint supply passages 8 corresponding to the number of spray guns 7. One arm-side paint supply passage 9 is formed inside each arm body 19, and the tip of each arm-side paint supply passage 9 is connected to the paint of the spray gun 7 attached to the tip of the arm body 19. Connected to the supply line.

Further, the base end sides of the arm-side paint supply passages 9 are each opened at the center part of the spray gun support arm 6 (see FIG. 4), and at this opening part, one of the rotating body side paint supply passages 8 is opened. connected.

Further, each of the rotating body side paint supply passages 8 is provided with a connecting joint 10 at its upper end, and via this connecting joint 10, the rotating body side paint supply passage 8 is connected to a paint hose (not shown).

Next, in FIG. 3, 11 is a timing belt for rotating the rotary body 4. As shown in FIG. That is, inside the support device main body 2, a timing belt 11 is wound around the rotating bodies 4 at both ends, and by moving this timing belt 11 with a drive motor, each of the rotating bodies 4 is rotated at the same time. It is possible to rotate in any direction. A diagram for explaining this relationship is FIG. 6, which shows the inside of the support device main body 2, and also shows the support device main body 2, the spray gun support arm 6, and the spray gun 7. Further, in the figure, 11 is a timing belt, 12 is a drive motor, and 13 is an idler unit for adjusting the tension of the timing belt 11. By moving, each of the rotating bodies 4 rotates in the same direction.

In this embodiment, when the rotating body 4 is rotated so that two of the respective spray gun support arms 6 are parallel to the support device main body 2, the front surface of the support device main body 2 is The spray gun 7 located on the side becomes a spray gun used for painting the workpiece.

Next, in FIG. 1, 14 is an air supply means for supplying air to the spray gun 7. That is, as mentioned above, in order to spray paint toward a workpiece with a spray gun, air for operating the needle is supplied and the needle is operated to open the paint discharge port, and at the same time, a mist is generated near the paint discharge port. Therefore, in order to atomize paint from a spray gun, three air hoses are used to supply needle operation air, atomization air, and pattern air to the spray gun. need to be supplied. On the other hand, if three air hoses were connected to each spray gun, the number of hoses would increase. For example, if a spray gun unit is equipped with four spray guns, a total of 16 hoses, including the paint hose, must be connected to the spray gun unit, which increases the size of the entire spray gun support device. Put it away.

Therefore, in the spray gun support device of this embodiment, there is only one set of air hoses for supplying various types of air to the spray guns for each spray gun unit 3, thereby reducing the number of spray guns. We decided to keep the number of air hoses constant without being affected by this, and to prevent the spray gun support device from becoming larger.

That is, in FIG. 1, in the spray gun support device 1 of this embodiment, an air supply means 14 for supplying air to the spray gun is disposed outside the rotating body 4 in the support device main body 2, and this air supply The means 14 supplies air to all of the spray guns 7 provided in the spray gun unit 3.

Here, the air supply means 14 will be explained with reference to FIG. 5. FIG. 5 is a diagram for explaining the internal structure of the air supply means 14, and in the figure, 15 is attached to the support device main body 2. This is the main body.

That is, the air supply means 14 has a main body 15, and the main body 15 is attached to the support device main body 2 on the outside of the rotating body 4 so as to pass through the support device main body 2. . In this embodiment, the main body 15 is disposed on the front side of the rotating body 4, thereby making it possible to supply various types of air to a spray gun used for painting the workpiece. Note that the location where the air supply means 14 is disposed is not particularly limited, and does not necessarily need to be disposed on the front side of the rotating body 4.

Next, in the figure, 16 is a movable part. That is, a movable part 16 is provided inside the main body part 15 so as to be movable in the vertical direction. A movable part side air supply passage 17 is formed inside the movable part 16, and this movable part side air supply passage 17 includes a movable part side atomizing air supply passage, a movable part side pattern air supply passage, and a movable part side air supply passage 17. There are three air supply paths for operating the needle on the movable part side. Air hoses are connected to the upper ends of the movable part side air supply passages 17, and the lower ends are open.

On the other hand, in FIG. 3, an arm-side air supply path 18 is formed inside each arm main body 19 constituting the spray gun support arm 6, and this arm-side air supply path 18 is used for supplying arm-side atomizing air. There are three lines: a supply path, an arm-side pattern air supply path, and an arm-side needle operation air supply path. The base end side of the arm side air supply path 18 is opened toward the support device main body 2 side (see Fig. 4), and the distal end side is used for the atomization air supply path, pattern air supply path, and needle operation in the spray gun. It is connected to each of the air supply paths.

Then, the rotating body 4 is rotated so that two of the respective spray gun support arms 6 become parallel to the support device main body 2, and the spray gun 7 located on the front side of the support device main body 2, that is, the workpiece, is Openings on the base end side of the arm side atomizing air supply path, the arm side pattern air supply path, and the arm side needle operation air supply path in the arm body 19 that supports the spray gun 7 used for painting are air supply means. When the movable part 16 is lowered after facing the opening at the lower end of the movable part side air supply passage 17 in the movable part side air supply passage 14, the movable part side atomizing air supply passage, the arm side atomizing air supply passage, and the movable part side The pattern air supply path and the arm side pattern air supply path are connected, and the movable part side needle operation air supply path and the arm side needle operation air supply path are connected, so that atomizing air, pattern air, and the needle are supplied to the spray gun. Operation air can be supplied.

On the other hand, the movable part side atomizing air supply passage and the arm side atomizing air supply passage, the movable part side pattern air supply passage and the arm side pattern air supply passage, and the movable part side needle operation air supply passage and the arm side needle operation air supply passage. It is possible to release the connection by lifting the movable part 16 while the air supply paths are connected.

Therefore, by lowering the movable part 16 when a specific spray gun is placed in a position for applying paint, an arm-side atomizing air supply path is formed inside the arm body that supports the spray gun. , the arm side pattern air supply path, and the arm side needle operation air supply path are connected to the movable part side atomizing air supply path, the movable part side pattern air supply path, and the movable part side needle operation air supply path. It is a good idea to keep it like this. Note that the method for moving the movable part 16 up and down is not particularly limited, but for example, it is preferable to connect an air cylinder to the movable part 16 and move the movable part 16 up and down by the action of the air cylinder.

Next, to explain the operation of the spray gun support device 1 of this embodiment configured as described above, when painting a work using the spray gun support device 1 of this embodiment, each of the spray gun units A predetermined paint hose is connected to the paint supply path 8, so that each spray gun can spray different colors of paint.

At the same time, the three movable part side air supply paths 17 in the air supply means 14, namely, the movable part side atomizing air supply path, the movable part side pattern air supply path, and the movable part side needle operating air supply path , connect the air hose.

Furthermore, the tips of the arm-side paint supply path 9 and the arm-side air supply path 18 of the arm body 19 are connected to the paint supply path and various air supply paths in the spray gun. Keep paint and air available.

Then, by rotating the rotating body 4 in this state, the spray gun that sprays the paint is placed at a predetermined position, and then the movable part 16 is lowered. Then, the arm-side atomizing air supply path, the arm-side pattern air supply path, and the arm-side needle operating air supply path formed inside the arm body 19 that supports the spray gun that sprays paint become movable. It is connected to the atomizing air supply path on the part side, the pattern air supply path on the movable part side, and the air supply path for operating the needle on the movable part side, and supplies atomizing air, pattern air, and needle operating air to the spray gun that sprays paint. supply becomes available. Therefore, by supplying the paint and various types of air to the spray gun, it becomes possible to spray and paint the paint onto the workpiece.

When the color is changed after painting is completed, the movable part 16 is raised, and the movable part side atomizing air supply path and the arm side atomizing air supply path are connected to the movable part side pattern air supply path and the arm side. Disconnect the pattern air supply path, the movable part side needle operation air supply path, and the arm side needle operation air supply path.

After that, as described above, by rotating the rotating body 4, the spray gun for spraying the next color of paint is placed in a predetermined position, and then the movable part 16 is lowered to spray the next color of paint. The arm-side atomizing air supply path, the arm-side pattern air supply path, and the arm-side needle operating air supply path formed inside the arm body 19 that supports the spray gun that sprays paint are connected to the movable part side. It is connected to the atomizing air supply path, the pattern air supply path on the movable part side, and the air supply path for operating the needle on the movable part side, and after that, by supplying paint and various air to the spray gun, it is possible to apply new color paint. Paint the workpiece.

In this way, the spray gun support device of this embodiment has a single air supply means for supplying various types of air to the spray guns provided in the spray gun unit, so it is possible to spray regardless of the number of spray guns. The number of air hoses that supply various types of air to the gun can be kept constant. Therefore, even if the number of spray guns increases, the number of air hoses does not increase, making it easier to handle the hoses and preventing the entire device from becoming larger.

The spray gun support device for a painting device of the present invention provides air supply to a plurality of spray guns using one air supply means in a painting device that has a plurality of spray guns and thus enables color changes without replacing the spray guns. It can be applied to all painting equipment that has multiple spray guns and can change colors.

1 Spray gun support device 2 Support device main body 3 Spray gun unit 4 Rotating body 5 Bearing 6 Spray gun support arm 7 Spray gun 8 Rotating body side paint supply path 9 Arm side paint supply path 10 Connection joint 11 Timing belt 12 Drive motor 13 Idler Unit 14 Air supply means 15 Main body part 16 Movable part 17 Movable part side air supply path 18 Arm side air supply path 19 Arm main body 22 Robot arm 23 Mounting member

Claims (6)

a support device main body (2) supported by an arm of the coating device;
a spray gun unit (3) equipped with a plurality of spray guns attached to the support device main body (2);
An air supply means (14) for supplying air to the spray gun (7) supported by the spray gun unit (3), which is attached to the support device main body (2). A gun support device,
The spray gun unit (3) includes:
a rotating body (4) rotatably mounted on the support device main body (2) in a horizontal direction;
a spray gun support arm (6) connected to the lower side of the rotating body (4) and having a plurality of arm bodies (19) each having a spray gun attached to its tip end;
Rotating body side paint supply passages (8) corresponding to the number of spray guns are formed inside the rotating body (4),
Inside the arm body (19), there are an arm-side paint supply path (9) connected to the rotating body-side paint supply path (8), and an arm-side air supply path (18) for supplying air to the spray gun. ) is formed,
The air supply means (14)
a main body part (15) attached to the support device main body (2);
a movable part (16) provided inside the main body part (5) so as to be movable in the vertical direction;
A movable part side air supply path (17) formed in the movable part (16),
By lowering the movable part (16), the arm side air supply path (18) formed in the arm body (19) to which the spray gun to be used is attached and the movable part side air supply path (17) are connected. A painting device characterized in that the arm side air supply path (18) and the movable portion side air supply path (17) are disconnected by connecting and lifting the movable portion (16) in the connected state. spray gun support device. The spray gun support device for a coating apparatus according to claim 1, wherein the spray gun unit (3) and the air supply means (14) are respectively mounted on both ends of the support device main body (2). The spray gun support device for a coating apparatus according to claim 1 or 2, characterized in that the four arm bodies (19) are provided, and a spray gun (7) is attached to each arm body (19). . An endless belt (11) is connected to the rotating body (4), a motor (12) is connected to the belt (11), and by driving the motor (12), the The spray gun support device for a coating device according to any one of claims 1 to 3, characterized in that the rotating body (4) is rotatable. The spray gun support device for a coating apparatus according to any one of claims 1 to 4, wherein the movable part (16) is vertically movable by an air cylinder (19). The movable part side air supply passage (17) formed inside the movable part (16) and the arm side air supply passage (18) formed inside the arm body (19) are respectively an atomizing air supply passage; The spray gun support device for a coating apparatus according to any one of claims 1 to 5, comprising a pattern air supply path and a needle operating air supply path.

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