JPH0634952B2 - Paint boots - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention is provided with a carrying device for carrying in and carrying out an object to be coated having an internal restricted space communicating with an external space, such as an automobile body, with respect to a spray coating work area. The present invention relates to a coating booth provided with an exhaust port for discharging the excess sprayed paint mist together with the gas in the working area.

[Conventional technology]

Conventionally, in the above-mentioned coating booth, by continuing the gas discharge from the exhaust port from the exhaust port from the time of spray coating to the carry-out of the coated object after spray coating, residual floating in the work area is carried in when the next coated object is carried in. The paint mist is eliminated as quickly as possible, and as a result, it is possible to replace the objects to be coated while preventing the color transfer between the objects to be exchanged which have different paint colors due to the residual floating paint mist. I was trying to be efficient. (No document can be given) [Problems to be solved by the invention] However, the exhaust action of the exhaust port provided for the working area causes the internal restricted space of the object to be coated (in the case of an automobile body, the Since it is difficult to reach the inside of the engine room), it is difficult to smoothly remove the excess spray paint mist that stays in the internal restricted space of the object to be coated, simply by exhausting air from the exhaust port. The fact is that a considerable amount of accumulated paint mist continuously drifts from the internal restricted space of the object to be coated into the work area outside it from the point of time to the time during which the paint mist is eliminated. Therefore, it is possible to prevent color transfer between objects to be coated with different paint colors due to residual floating paint mist, and
It has not been possible to achieve a sufficient compatibility with the improvement of the efficiency of replacing the object to be coated, which has been a problem that hinders the improvement of the work efficiency in the continuous coating work.

An object of the present invention is to avoid a delay in mist removal due to paint mist drifting out of the internal restricted space of the object to be coated by adopting a rational paint mist removal configuration.

[Means for solving problems]

The characteristic configuration of the coating booth according to the present invention is provided with a nozzle for blowing a gas for removing excess blown paint mist into an internal restricted space of the object to be coated, and a moving means for moving the nozzle in a perspective direction with respect to the object to be coated, Provided with a blowing operation means for controlling the blowing of the gas for removing the excess sprayed paint mist from the nozzle, and linked with the transfer device and the coating device, and
An automatic operation device for operating the moving means and the blowing operation means, after coating the object to be coated, the nozzle is brought closer to the object to be blown to blow the excess sprayed paint mist elimination gas into the internal restricted space. There is a structure in which the nozzle is made to perform and then the nozzle is retracted from the object to be coated, and the operation and effect thereof are as follows.

[Action]

That is, an automatic operation device that is linked to the transport device and the coating device, after coating the object to be painted in, operates the moving means to bring the nozzle closer to the object to be painted, and the blowing operation means to operate the object to be painted. The excess spray paint mist removing gas is blown from the nozzle into the internal restricted space.

Then, due to this gas blowing, the excess sprayed paint mist that stays in the internal restricted space of the object to be coated is discharged from the internal restricted space to the outside thereof (that is, the internal restricted space of the object that is difficult to be exhausted by the exhaust port). After the spray coating is completed, the residual floating paint mist in the internal restricted space of the object to be coated is automatically removed as quickly as possible after forced spraying. To eliminate continuous paint mist bleeding from the internal confined space of the work piece, which causes a delay in the removal of paint mist in the area.

After the gas is blown in, the automatic operating device operates the moving means to retract the nozzle from the object to be coated in order to prevent the nozzle from obstructing the transportation of the object to be coated.

〔The invention's effect〕

As a result, it is possible to eliminate the excess spray paint mist from the entire spray coating work area including the restricted space, even though the object to be coated has an internal restricted space where residual spray paint mist easily remains. There is no delay due to paint mist drifting out of the restricted space inside the object, and it can be completed automatically at an early point after the completion of one spray coating. The replacement can be performed more efficiently than ever before, and as a whole, the work efficiency in the continuous coating work can be greatly improved.

〔Example〕

Next, an embodiment of the present invention will be described with reference to FIGS.

Excessive spray paint mist generated by spray coating is eliminated by continuously ventilating air from the ceiling outlet (1) and the left and right side wall outlets (2) and continuously exhausting air from the bottom exhaust port (3). In the room-shaped spray coating work area (A), the multiple indirect robots that automatically coat the object (5) at the prescribed spray coating position in the area by spraying the paint from the spray gun (4). (6) are installed side by side, and the spray coating work area (A) is provided with a conveyor device (7) for sequentially loading and unloading the object to be coated (5) at a set transport pitch, and for the spray gun (4). Paint supply interrupt valve (9) interposed in each of the parallel paint passages (8) that supply paints of different colors, and the air passage (10) that supplies compressed air for paint spraying to the spray gun (4) Compressed air supply disconnect valve (11) and coating robot (6)
In addition, the control device (12) is provided for automatically operating the actuators of the conveyor device (7) in a mutually linked state based on the setting program of the conveyor device (7). To be coated
The coating booth is configured to perform automatic continuous coating by sequentially spray-coating the object to be coated (5) in a predetermined color while sequentially loading (5).

In addition, (B) and (C) in the figure are the first and second mist removing devices for removing the paint mist in the exhaust air by bringing the exhaust air from the exhaust port (3) into contact with the wash water (W). Yes, and (F
₁ ) and (F ₂ ) are an air supply fan and an exhaust fan.

To set the program to be executed by the control device (12), before the start of unloading movement after completion of spray coating each time,
Operate a set number of parallel coating robots (6) and set their spray guns (4) as shown in FIG.
The internal restriction space (vehicle window in this embodiment) of (5) is exposed from the opening (vehicle window) into the internal restriction space, and in that state, the spray gun (4) is internally restricted for a set time. Inject only compressed air for spraying paint into the space,
After that, the program is set so that the coating robot (6) is operated again and the spray guns (4) are retracted to a position where there is no hindrance to the transfer movement of the object to be coated (5).

That is, by automatically blowing compressed air as described above using the originally equipped painting robot (6) and its spray gun (4), the paint mist that stays in the internal restricted space of the object to be coated (5) is removed. , Ventilation air is blown out and forced to flow out to the outside of the restricted space where the mist elimination effect is effectively exerted, so that the accumulated paint mist in the internal restricted space is accompanied by the transfer movement of the object to be coated (5). The delay in removing the paint mist due to continuous drifting in the area (A) is avoided.

[Another embodiment]

Next, another embodiment of the present invention will be described. As a nozzle for blowing various gases for removing paint mist into the internal restricted space of the object to be coated (5), it is equipped in the coating robot (6) as in the previous embodiment and also used as the spray gun for coating (4) Instead of the above, a dedicated nozzle is provided and the dedicated nozzle is used as a control device (12).
It may be configured to be moved to and away from the object to be coated (5) by an automatic operation according to, and to be operated to blow gas, and in that case, the specific nozzle structure, the blowing gas supply structure, and the perspective moving structure are Various configuration changes are possible.

The gas blowing nozzle for removing the paint mist (4) is preferably operated at the earliest possible time after the spray coating is completed, but while moving the nozzle (4) following the unloading movement of the object to be coated (5). Alternatively, the blowing operation may be performed during the carrying-out movement.

Further, after the approaching movement to the object to be coated (5), the position where the nozzle (4) is blown with gas is either inside the restricted space inside the object (5) or outside the restricted space. May be.

From the transfer device (which also serves as the coating robot in the above-described embodiment) which moves the nozzle (4) in cooperation with the transfer device (7) and the coating device (the coating robot in the above-described embodiment), and the nozzle (4) A device (12) for automatically operating a blow-out operating means (an intermittent valve in the above-mentioned embodiment) for operating a blow-out, for moving the nozzle (4) to and from the object to be coated (5) and operating to blow a gas. The specific control configuration of the device can be changed in various ways, and these devices are collectively referred to as automatic operation devices.
It is called (12).

The coating booth according to the present invention can be applied to coated products in various fields as long as it has an internal restricted space that communicates with an external space such as an automobile body.

It should be noted that reference numerals are added to the claims for convenience of comparison with the drawings, but the present invention is not limited to the structures of the accompanying drawings by the entry.

[Brief description of drawings]

1 to 3 show an embodiment of the present invention, FIG. 1 is a schematic sectional view in a front view, FIG. 2 is a schematic sectional view in a plan view, and FIG. 3 is for eliminating paint mist in an internal restricted space. It is sectional drawing which shows a state. (3) …… Exhaust port, (4) …… Nozzle, (5) …… Coating object, (7)
…… Conveyor, (12) …… Automatic operation device, (A) …… Spray coating work area.

Claims (1)

[Claims] 1. A transfer device (7) for carrying in and out an object to be coated (5) having an internal restricted space communicating with an external space to and from a spray coating work area (A), and an object to be coated (5) carried in. It is a coating booth that is equipped with a coating device for spray coating, and has an exhaust port (3) for discharging the excess spray paint mist together with the gas in the working area (A). A nozzle (4) for injecting a mist-eliminating gas is provided, and a moving means (6) for moving the nozzle (4) in a perspective direction with respect to the object to be coated (5) is provided, and excess spray paint from the nozzle (4) is provided. Blow-out operating means for operating the blow-out of mist-removing gas
(9) and (11) are provided and are linked to the transfer device (7) and the coating device, and the moving means (6) and the blowing operation means (9), (1
After coating the object to be coated (5) that has been loaded with the automatic operating device (12) that operates 1), the nozzle (4) is brought closer to the object to be coated (5) and excess paint is sprayed into the internal restricted space. A coating booth configured to inject a mist-removing gas and then withdraw the nozzle (4) from the object to be coated (5).