JPH0661514B2 - Coating equipment - Google Patents

Description

TECHNICAL FIELD The present invention relates to a coating device having a simple structure capable of quickly and easily switching coating materials.

[Conventional technology]

For example, it is often necessary to apply different paints to the panels used for the outer wall, the inner wall, etc. of a house as the tastes of the residents are diversified. Moreover, base coating,
In many cases, different types of coating agents such as finish coating are applied to the same panel.

In such a case, conventionally, a spray gun is used each time the coating material is changed, or a plurality of booths are provided in order to eliminate the trouble of changing the coating material, and each booth performs different coating.

[Problems to be solved by the invention]

However, changing the coating material described above requires labor such as cleaning of a spray gun, and the use of a plurality of booths increases the work area.

The present invention is based on connecting air inlets for controlling a plurality of automatic spray guns to which different coating agents are supplied to an air supply apparatus via a valve element, and enables easy and quick switching of coating agents. It is an object of the present invention to provide a coating device that can solve the above problems.

[Means for Solving the Problems]

According to the present invention, a plurality of automatic spray guns having an air intake port and a coating material intake port, which turn on and off the injection of the coating agent by turning on and off the air from the air intake port, are transferred using a transfer device. A plurality of rows of pedestals provided in a direction crossing over the article to be coated and automatic spray gun rows juxtaposed in the transverse direction are provided on the gantry, and each coating agent inlet of the automatic spray gun is provided for each row. A coating device that includes a valve element that communicates with each of the coating material supply devices that supply different coating agents to each other, and that selects the air inlet of each automatic spray gun for each row and communicates with the air supply device. is there.

[Action]

A coating material supply device for supplying a different coating material is connected to each coating material intake of the juxtaposed automatic spray guns. Further, the air intake for turning on and off the injection of the coating agent is connected to the air supply device through the valve body, and therefore, by opening and closing the valve body,
Only the automatic spray gun connected to the desired coating material supply device can be selected, and by this selection, the coating material can be switched easily and quickly, and the working efficiency is improved.

Further, by disposing the automatic spray gun in one booth, different coating materials can be applied in the same booth, and the work space can be efficiently used.

〔Example〕

 An embodiment of the present invention will be described below with reference to the drawings.

The coating device 1 is a device for applying different coating materials to an object to be coated W which is, for example, a panel, and includes a plurality of automatic spray guns 2.
A plurality of columns A, 2A, 2B and 2B are provided on the pedestal 3 provided in a direction crossing over the article W and automatic spray gun rows (2A, 2B), (2A, 2B) juxtaposed in the transverse direction. In this embodiment, two rows are provided on the gantry 3 and the coating material intake ports 4A of the automatic spray guns 2A and 2B are provided.
4B is made to communicate with coating material supply devices 5A and 5B for supplying different coating materials for each row, and an air intake 6A for controlling each automatic spray gun 2A, 2B for turning on / off the injection of the coating material. , 6B are selected for each row, and valve bodies V6A, B6B for communicating with the air supply device 7 are provided.

The object W to be coated is transported in its longitudinal direction by using a transport device (not shown), and the automatic spray gun 2
A, 2A, 2B, and 2B are located in positions close to upstream and downstream in the transport direction by using rods at both ends of the gantry 3 provided in a direction traversing the article W in one booth. An automatic spray gun row (2A, 2B) composed of two automatic spray guns (2A, 2B) arranged side by side and thus arranged in the transverse direction and arranged in the transport direction of the object W.
B) and (2A, 2B) are provided on the gantry 3 in two rows.

As shown in FIGS. 2 and 3, the automatic spray guns 2A and 2B have an air cap 12 at the front end of a rectangular parallelepiped base 11.
And a mounting metal fitting 14 having a through hole for inserting the rod of the pedestal 3 is screwed onto one side surface of the base body 11 of the main body in which the adjusting nut 13 is arranged at the rear end, and one side surface of both ends thereof is attached. The coating material inlets 4A and 4B are provided.
In addition, the air inlets 6A and 6B for control are provided on the other side surface that opposes the one side surface, and the air intake for the air for blowing is provided in parallel with the air inlets 6A and 6B. The inlets 9A and 9B are provided, and on the other side,
Air intake 1 for pattern air to adjust the spray pattern
0A and 10B are provided.

The coating material inlets 4A and 4B are provided in the coating material nozzle 19 through a hole portion 17 shown by a chain line in FIG. 3, and the coating material inlet 20 at the tip is closed by a needle valve 21. It communicates with P.

Further, the control air intakes 6A and 6B enter the air chamber for accommodating the piston 24 through the flow path a1.
The piston 24 is retracted against the spring 25. Therefore,
The needle valve 21, which is integral with the piston 24, is separated from the coating material port 20 and the coating material port 20 is opened. When the supply of air to the control air intakes 6A and 6B is cut off, the piston 24 is moved forward by using the spring 25,
The coating material port 20 is closed, and the air intake ports 6A, 6
The coating material port 20 can be opened and closed by turning air into and out of B.

Further, an air intake 9 for taking in the air for spraying
A and 9B pass through a flow path a2 provided in the base 11 and a hole a3 around the coating material nozzle 19 to communicate with an air outlet surrounding the coating material opening 20.

Further, the air inlets 10A and 10B for pattern adjustment are the flow paths a.
4 through the notch groove around the paint nozzle 19 and the pattern adjusting hole 27 provided in the corner portion 26 of the air cap 12.

Automatic spray guns 2A, 2A said coating material intake 4A, 4
A pipe that branches from the coating material supply device 5A is connected to A. In addition, the automatic spray guns 2B, 2B coating material intake port 4B,
A pipe branched from another coating material supply device 5B is connected to 4B. Therefore, the automatic spray gun row (2A, 2
B), (2A, 2B) automatic spray guns 2A, 2
B, 2A and 2B supply different coatings to the automatic spray guns 2A and 2B forming the automatic spray gun rows (2A and 2B) for each row, that is, for each automatic spray gun row (2A and 2B). To the coating material supply devices 5A and 5B.

Further, the air inlets 6A, 6A for the control air of the automatic spray gun 2A join and are connected to an air supply device 7 such as a compressor via the valve body V6A. An oil separator intervenes between them a pressure regulating device 30 including a pressure regulating valve or the like. Another automatic spray gun 2
The air intake ports 6B and 6B of B and 2B are connected to the air supply device 7 via a valve body V6B. Therefore, the valve body V6
By selecting and opening A and V6B, the automatic spray guns 2A, 2B, 2A, and 2B are arranged in each row, that is, each automatic spray gun row (2A, 2B), (2A, 2B).
For each B), two automatic spray guns 2A, 2B can be selected and communicated with the air supply device 7. Further, the air inlets 9A, 9A, 9B, 9B for spraying and the air inlets 10A, 10A, 10B for pattern adjustment of the automatic spray guns 2A, 2A, 2B, 2B, respectively.
10B are different valve bodies V9A, V9B, V10A, V
The pressure regulator 30 is connected via 10B (the valve body is generically referred to as the valve body V).

The valve body V is, for example, a 2-position, spring-return pilot type switching valve, and the valve bodies V6A and V6B are three-port ones for exhaust, and the others are two-port ones. To use.

Therefore, the valve elements V6A, V6 connected to the automatic spray gun 2A
By selectively opening 9A, V10A and valve bodies V7B, V9B, V10B connected to the automatic spray gun 2B, it is possible to selectively operate the automatic spray guns 2A ... 2B. When both are opened, both automatic spray guns 2A and 2B are operated.

As the valve body V, for example, two valve bodies V6A and V6
Instead of using B, it is also possible to use one 3-position switching valve.

As described above, the coating apparatus 1 can easily switch the coating agent within one booth by only switching the valve body V.

The automatic spray guns 2A and 2B may be of a well-known paint circulating type to reduce the retention of the coating agent, and the device of the present invention is not limited to so-called coating agent
It can be suitably used for spraying a coating agent containing other chemicals such as a rust preventive agent and a base material.

〔The invention's effect〕

As described above, the apparatus of the present invention is provided with the coating material inlet of each automatic spray gun of the automatic spray gun rows arranged side by side in the transverse direction above the article to be conveyed by using the conveying apparatus. A valve element is provided to connect the coating material supply devices for supplying different coating materials and to select the air inlets for turning on and off the injection of the coating material for each row and to communicate with the air supply device. By opening and closing the body, it is possible to select and operate only the automatic spray gun that is connected to the coating material supply device that supplies the desired coating material. In addition to this, by this selection, the coating material can be switched easily and quickly, improving the working efficiency, and the automatic spray gun rows selected for each row by the valve body are juxtaposed in the transverse direction. Therefore, different coating materials may be applied to the objects to be conveyed. It is possible to evenly uniformly applied selectively to, it can enhance the quality.

Further, by disposing the automatic spray gun in one booth, different coating materials can be coated in the same booth, and the work space can be efficiently used.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention, FIG. 2 is a front view illustrating an automatic spray gun, and FIG. 3 is a sectional view thereof. 2A, 2B ... Automatic spray gun, 3 ... Stand, 4A, 4B ... Coating material intake port, 5A, 5B ... Coating material supply device, 6A, 6B ... Control air intake port, V, V6A, V6B ...... Valve element, 7 ...... Air supply device, W ......

Claims (1)

[Claims] 1. A plurality of automatic spray guns having an air intake port and a coating material intake port, for turning on and off the injection of the coating liquid by turning on and off the air from the air intake port, using a transfer device. A plurality of pedestals provided in a direction crossing over the article to be conveyed and automatic spray gun rows juxtaposed in the transverse direction are provided in the gantry, and each coating agent inlet of the automatic spray gun is provided in each row. A coating device including a valve body that communicates with a coating material supply device that supplies a different coating material for each column, and that selects the air inlet of each automatic spray gun for each row and communicates with the air supply device. .