JP3360992B2 - Color change valve device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coating machine or the like by selectively selecting a fluid such as each color paint, cleaning liquid, cleaning air, etc. sent from a fluid supply source through a supply pipe with a color changing valve. The present invention relates to a color-changing valve device that feeds a coating device such as a valve device.

[0002]

2. Description of the Related Art FIGS. 4 and 5 are a sectional view and an external perspective view showing a conventional color change valve device.
In the case of 0, a plurality of color changing valves 54 are attached to a manifold 53 having a paint passage 52 connected to a painter 51, and each color paint supplied from a paint supply source 55 is selectively supplied by the color changing valve 54. Select the paint flow path 52 to the coating machine 5
It is designed to be sent to 1.

In this case, the color change valve 54 has
A connection port 57 for connecting a paint pipe 56 for supplying paint from a paint supply source 55 is formed on the side surface thereof, and the paint which is communicated with the paint passage 52 with the color change valve 54 mounted on the manifold 53 on the bottom surface. The outflow port 58 is formed as an opening. Furthermore, when the color change valve 54 is an air operated type valve that is opened and closed by air pressure, the connection port 61 connecting the air pipe 60 for supplying the operated air from the air supply source 59 is also colored. When the replacement valve 54 is a paint circulation type valve, connection ports 63 for connecting the paint pipe 62 for circulating the paint to the paint supply source 55 are formed on the side surfaces of the valve 54, respectively.

The color change valve 54 is attached to the manifold 53 to assemble the color change valve device 50, and the paint pipe 56, the air pipe 60, and the paint pipe are connected to the respective connection ports 57, 61, 63 of each valve 54. When 62 is connected, a paint circulation system is formed between the paint supply source 55 for each color and the color change valve device 50. Here, the optional color change valve 5
When the operating air is supplied to the No. 4 from the air supply source 59 through the air pipe 60, the needle 64 opens and the paint circulated from the paint supply source 55 is supplied from the paint outlet 58 of the color changing valve 54. It is supplied to the coating machine 51 through the coating passage 52 of the manifold 53.

[0005]

However, even if the color change valve 54 mounted on the manifold is to be removed when the color change valve 54 fails or when the inside of the color change valve 54 is inspected / cleaned, A paint pipe or an air pipe is connected to the color change valve 54, and the mounting screw 65 that fixes the color change valve 54 to the manifold 53 is hidden by the pipes or the pipes overlap each other. Even if only the color changing valve 54 is removed, it cannot be easily removed.

Further, not only when the color changing valve 54 is replaced but also when regularly inspecting / cleaning, it is impossible to clean the pipes while the pipes are connected. I had to reconnect it again, which was very troublesome. In particular, when each color change valve 54 is mounted at a high density to make the color change device compact, the pipes are also densely packed by that amount, so that the individual color change valves 54 cannot be easily attached and detached. could not. Therefore, the present invention not only allows the pipes to be easily removed without hindering the pipes even when the color change valves are mounted at a high density, but also allows the pipes to be replaced when the color change valves are replaced. The technical task is to eliminate the trouble of reconnecting and to reduce the labor of work.

[0007]

In order to solve this problem, according to the present invention, a plurality of color change valves have their outlets along the longitudinal direction of a manifold having a fluid passage connected to a coating device. A color that is mounted in communication with the fluid passage and that selectively supplies a plurality of fluids that are sent from a fluid supply source through a supply pipe with the color change valve and sends the fluid from the fluid passage to a coating device. In the replacement valve device, a mounting hole is formed in the manifold at a mounting position of each color replacement valve for inserting and inserting a tip side of the color replacement valve.
In the mounting hole, a connection passage that connects the outflow port of the color changing valve and the fluid passage of the manifold is formed on the bottom surface, and a fluid supply passage that penetrates the manifold is formed on the inner peripheral surface. An outlet is formed in the color change valve at a position communicating with the connection passage when the valve is attached to the mounting hole of the manifold, and an inlet is formed at a position communicating with the fluid supply passage. It is characterized by that.

According to this, when the color change valve is inserted and installed in the mounting hole of the manifold, the inflow port is communicated with the fluid supply passage formed in the manifold.
For example, if a paint hose that supplies paint from a paint supply source to the color change valve is connected to the fluid supply passage of the manifold,
Paint is supplied from the paint supply source to the color change valve via the fluid supply passage. In this way, it is not necessary to directly connect the paint hose or other pipes to the color change valve, so there is no need to attach or detach the paint hose when replacing or inspecting the color change valve. Even if the replacement valve is mounted with high density, it can be easily and easily removed.

Further, as a color change valve, a three-way valve that selectively flows out the paint flowing from the paint inlet from either the paint outlet or the paint reflux port is fed to the coating machine. When returning paint of a different color to the paint supply source, a paint supply passage and a paint return passage that penetrate the manifold are formed on the inner peripheral surface of the mounting hole of the manifold.
In the color change valve, when the paint inlet is formed at a position communicating with the paint supply passage and the paint reflux port is formed at a position communicating with the paint recirculation passage when installed in the mounting hole of the manifold, the paint It suffices to connect the supply paint hose and the paint recirculation paint hose to the manifold, and it is not necessary to connect a pipe forming a paint passage to the color change valve.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION A color change valve device according to the present invention will be specifically described below based on the embodiments shown in the drawings.
1 is a sectional view showing a color change valve device according to the present invention, FIG.
Is a perspective view thereof.

In FIG. 1, reference numeral 1 denotes a coating machine (painting equipment) 4 by selectively selecting each color paint fed from a paint supply source (fluid supply source) 2 via a paint hose (supply pipe) 3. A color change valve device for feeding, and a plurality of color change valves V, V on both left and right sides along the longitudinal direction of the manifold 6 in which a paint passage (fluid passage) 5 connected to the coating machine 4 is formed.・
Is attached so that the paint outlet (outlet) 7 communicates with the paint passage 5.

The manifold 6 is provided with a mounting hole 8 at the mounting position of each color changing valve V for inserting and inserting the front end side of the color changing valve V into the mounting hole 8.
A connection passage 9 that connects the paint outlet 7 of the color change valve V and the paint passage 5 of the manifold 6 is formed on the bottom surface 8a, and the paint supply penetrating the top surface 6a of the manifold 6 is provided on the inner peripheral surface 8b. A passage (fluid supply passage) 10 is formed with an opening. The upper surface 6a of the manifold 6
A connection port 11 for connecting the paint hose 3 is formed in the paint supply passage 10 opened at the position so as to be located right above each color change valve V.

Each color change valve V is formed by an air operated type needle valve in which a needle 12 that closes a paint outlet 7 formed at the tip is moved forward and backward by air pressure, and the color change valve V is connected to the manifold. 6 mounting holes 8
The paint outflow port 7 is formed at a position communicating with the connection passage 9 when mounted on, and the paint inflow port 13 is formed at a position communicating with the paint supply passage 10.

The needle 1 for opening and closing the paint outlet 7
2 is biased by a spring 14 in a direction to close the paint outlet 7, and when the operating air flows in from an operating air supply port 16 via an air supply hose 15,
With that pressure, it is retracted against the resilience of the spring 14,
The paint outlet 7 is opened. Therefore,
When coating with the paint of the color supplied to the color change valve V, the needle 1 is supplied by supplying the operating air.
2 is retracted and the paint outlet 7 is opened to allow the paint to flow out to the manifold 6, and when the paint of that color is not coated, the supply of the operating air is stopped so that the needle 12 repels the spring 14. And the paint outlet 7 is closed. Reference numeral 17 is a mounting screw for fixing the color change valve V to the manifold 6.

The above is an example of the configuration of the present invention, and its operation will be described below. First, the color change valves V, V, ... Are mounted along the longitudinal direction of the manifold 6 and fixed by the mounting screws 17, the paint inlet 13 and the paint outlet 7 are connected to the paint supply passage 10 of the manifold 6 and the connection. It communicates with the passage 9. Then, a paint hose 3 for supplying paint from each paint supply source 2 is connected to a connection port 11 of a paint supply passage 10 opened on the upper surface 6a of the manifold 6, and air is supplied to an operating air supply port 16 of the color change valve V. Connect the hose 15. At this time, since the connection port 11 of the paint supply passage 10 is formed on the upper surface 6a of the manifold 6, the connection is extremely simple, and since it is formed right above each color change valve V, the piping You won't make a mistake.

When operating air is supplied to an arbitrary color changing valve V through the air supply hose 15,
The needle 12 is retracted by the pressure of the operating air, and the paint outlet 7 and the manifold 6 of the color change valve V concerned.
Of the paint passage 5 communicates with each other via the connection passage 9. Therefore, the paint supplied from the paint supply source 2 via the paint hose 3 is applied to the paint supply passage 10 formed in the manifold 6.
~ Paint inlet 13 of color change valve V ~ Paint outlet 7 ~ Connection passage 9 of manifold 6 ~ Paint passage 5
To be sprayed.

When the color change valve V is replaced or inspected / cleaned due to a failure of the color change valve V, the color change valve V can be removed from the manifold 6 by removing the mounting screw 17. At this time, since the paint hose 3 is not connected to the color change valve V, the paint hose 3
The color change valve V can be easily removed without the need to remove it.

Although not shown, the manifold 6
The mounting hole 8 may be deeply formed, and an operating air passage penetrating the upper surface 6a of the manifold 6 may be formed in the inner peripheral surface 8b thereof so that the operating air formed in the color changing valve V communicates therewith. . By doing so, the air supply hose 15 can also be connected to the manifold 6, so it is not necessary to connect any pipes to the color change valve V, and the color change valve V can be easily attached and detached. You can

FIG. 3 is a sectional view showing another embodiment of the present invention. The same parts as those in FIGS. 1 and 2 are designated by the same reference numerals, and detailed description thereof will be omitted.

In this embodiment, a paint supply passage 10 is formed on the inner peripheral surface 8b of the mounting hole 8 of each color change valve V formed in the manifold 6 so as to extend straight through the upper surface 6a of the manifold 6, and the manifold 6 is also provided. A connection port 11 for connecting the paint hose 3 to the paint supply passage 10 is formed by forming a paint return passage 21 that penetrates straight through the lower surface 6b of the paint.
A connection port 23 for connecting the paint hose 22 to the paint recirculation passage 21 is formed right above and right below each color change valve V, respectively.

Further, the color changing valve V allows the paint flowing in from the paint inlet 13 to pass through the paint outlet 7 or the paint reflux port 24.
The paint outlet 7 is formed in a three-way valve that selectively flows out from either one of the above, and the paint outlet 7 is formed at a position communicating with the connection passage 9 when the valve V is mounted in the mounting hole 8 of the manifold 6. The paint inflow port 13 is formed at a position communicating with the paint supply passage 10, and the paint recirculation port 24 is formed at a position communicating with the paint recirculation passage 21.

After the color change valve V is inserted into each of the mounting holes 8 to be attached, the paint for supplying the paint from each of the paint supply sources 2 to the connection port 11 of the paint supply passage 10 opened on the upper surface 6a of the manifold 6. The hose 3 is connected, and the paint hose 22 for circulating the paint to the paint supply source 2 is connected to the connection port 23 of the paint recirculation passage 21 to form a paint circulation system. At this time, since the connection port 11 of the paint supply passage 10 is formed on the upper surface 6a of the manifold 6 and the connection port 23 of the paint return passage 21 is connected to the lower surface 6b of the manifold 6, the connection is extremely simple. ,Also,
Since the color change valves V are formed directly above and below each color change valve V, piping mistakes do not occur.

When any color change valve V is to be replaced or inspected / cleaned due to a failure of the color change valve V, the color change valve V can be removed from the manifold 6 by removing the mounting screw 17. At this time, since the paint hoses 3 and 22 are not connected to the color change valve V at all, there is no need to remove the paint hoses 3 and 22.
Can be easily removed. In this case, similarly to the above-described embodiment, the mounting hole 8 of the manifold 6 is deeply formed, an operating air passage is formed in the inner peripheral surface 8b, and an air supply hose may be connected thereto. For example, it is not necessary to connect any pipes including the air supply hose to the color change valve V.

Further, in the above description, the terms "upper surface 6a" and "lower surface 6b" of the manifold 6 are used to describe the opening positions of the paint supply passage 10 and the paint recirculation passage 21. It is used for convenience sake for convenience, and does not mean up and down in an absolute sense. Further, in this example, a flow path from the paint supply passage 10 of the manifold 6 to the paint inlet 13 of the color change valve V,
Since the flow path from the paint recirculation port 24 of the color change valve V to the paint recirculation passage 21 of the manifold 6 can be formed straight without being bent, it has an extremely excellent cleaning property. Furthermore, since the color change valve V and the manifold 6 can be formed in a block shape, the color change valve device 1 as a whole can be formed in a rectangular parallelepiped shape, and not only can a neat design with no irregularities on the periphery be made, but also at the installation place. It can be installed in any direction, and it is extremely convenient to handle without disturbing it.

[0025]

As described above, according to the present invention, the connection port for connecting the supply pipe is formed in the manifold, and the fluid is supplied to the color change valve through the flow path in the manifold. Therefore, you can easily remove the color change valve while connecting to the manifold without connecting or disconnecting these supply pipes, and at the same time you do not need to reconnect the supply pipes when replacing the color change valve. It has a very excellent effect that the labor can be remarkably reduced.

[Brief description of drawings]

FIG. 1 is a sectional view showing an example of a color change valve device according to the present invention.

FIG. 2 is a perspective view showing the overall shape thereof.

FIG. 3 is a sectional view showing another embodiment.

FIG. 4 is a cross-sectional view showing a conventional device.

FIG. 5 is a perspective view showing a conventional device.

[Explanation of symbols]

1 ... Color change valve device 2 ... Paint supply source (fluid supply source) 3 ... Paint hose (paint piping) 4 ... Painting machine (painting equipment) 5: Paint passage (fluid passage) 6 ... manifold V ... Color change valve 7 ... Paint outlet (outlet) 8 ... Mounting hole 8a ... bottom surface 8b ... 9 ... Connection passage 10 ... Paint supply passage (fluid supply passage) 11 ... Connection port 13 ... Paint inlet (inlet) 21 ... Paint circulation passage 24 ... Paint recirculation port

Claims (2)

(57) [Claims] 1. A plurality of color change valves (V) have their outlets (7) at their outlets (7) along the longitudinal direction of a manifold (6) forming a fluid passage (5) connected to a coating device (4). A plurality of fluids mounted in communication with the fluid passage (5) and fed from the fluid supply source (2) through the supply pipe (3) are selectively selected by the color change valve (V). In the color change valve device for feeding from the fluid passage (5) to the coating device (4), the tip of the color change valve (V) is attached to the manifold (6) at a mounting position of each color change valve (V). A mounting hole (8) is formed by inserting the side, and the mounting hole (8) is formed.
The bottom surface (8a) is formed with a connection passage (9) for communicating the flow outlet (7) of the color change valve (V) with the fluid passage (5) of the manifold (6) and has an inner periphery. A fluid supply passage (10) penetrating the manifold (6) is formed on the surface (8b), and the valve (V) is attached to the mounting hole (8) of the manifold (6) on the color change valve (V). ), An outlet (7) is formed at a position communicating with the connection passage (9) and an inlet (13) is formed at a position communicating with the fluid supply passage (10). Color change valve device characterized by. 2. A paint supply passage (10) and a paint recirculation passage (21) penetrating the manifold (6) are opened in an inner peripheral surface (8a) of a mounting hole (8) formed in the manifold (6). The color change valve (V) selectively discharges the paint flowing from the paint inlet (13) from either the paint outlet (7) or the paint reflux port (24). The paint outlet (7) is formed in a three-way valve, and the paint outlet (7) is formed at a position communicating with the connection passage (9) when the valve (V) is installed in the mounting hole (8) of the manifold (6), The paint inflow port (13) is formed at a position communicating with the paint supply passage (10), and the paint recirculation port (24) is formed at a position communicating with the paint recirculation passage (21). The described color change valve device.