JPH041668B2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a booth for automatically spray painting automobile bodies, casings of home appliances, etc.
In detail, for the spray painting work area where automatic painting equipment is installed, there are ceiling outlets that blow out ventilation gas in a downward laminar flow from almost the entire surface of the ceiling, and side outlets that blow out ventilation gas sideways from the side walls. The painting booth is provided with an outlet and a floor exhaust port for discharging surplus spray paint mist together with the gas in the area, and a lighting fixture is attached to the side wall.

[Conventional technology]

Conventionally, when installing lighting equipment in the above-mentioned painting booth, relatively weak lighting that can monitor the operation of automatic painting equipment is sufficient during automatic painting work, but when teaching operations or maintenance of painting equipment, etc. When workers perform various tasks within the spray painting work area, bright lighting is required over a wide area, and lighting equipment must be designed so that it does not interfere with ventilation gas blowing out from the ceiling or side air outlets. With this in mind, the lighting fixtures were placed so that they faced directly into the work area from the side wall, which was higher than the side air outlet. In other words, the lighting equipment was installed directly inside the work area at a location higher than the side air outlet (I cannot provide any references).

(Problem to be Solved by the Invention) However, in the area of the spray painting work area that is higher than the horizontal outlet, excess spray is caused by the laminar downward flow of the ventilation gas blown out from the ceiling outlet. Promotes settling of paint mist, thereby
Quickly eliminates paint mist in order to efficiently replace objects with different paint colors without color transfer.
In addition, in order to facilitate cleaning and maintenance, efforts are being made to prevent paint mist from adhering to walls, but the above-mentioned problem arises in that lighting equipment is placed directly in front of such ventilation gas flow areas. In conventional booths such as the above, during automatic painting work, the downward laminar flow of ventilation gas is disturbed by the local upward flow of gas within the area caused by the heat generated by the lighting equipment, and a vortex is generated near the inner wall. Therefore, there was a problem in that the above-mentioned rapid removal of paint mist was impaired, and the adhesion of paint mist to the inner wall was promoted due to the drawing action of the vortex.

The purpose of the present invention is to ensure sufficient illumination necessary for monitoring the operation of painting equipment during automatic painting work by rationally improving the layout of the painting booth by utilizing its original configuration; When workers enter the work area for teaching operations, maintenance, etc., while ensuring sufficient bright lighting over a wide area within the work area, it is necessary to avoid inconveniences in eliminating paint mist caused by the heat generated by lighting equipment as described above. The purpose is to solve the problem of preventing paint mist from adhering.

[Means for solving problems]

The characteristic structure of the painting booth according to the present invention is that the lighting equipment is attached to the side wall at a position higher than the side outlet and directly facing the spray painting work area, and at a position facing the spray painting work area through the side outlet. The functions and effects are as follows.

[Effect]

That is, during automatic painting work, illumination is performed only by the lighting fixture 16B facing the spray painting work area 2 through the side outlet 7 in the arrangement shown in FIG. When carrying out teaching operations, maintenance, etc. inside the spray painting work area 2, lighting is provided using a lighting fixture 16A which is arranged as shown in FIG.

That is, during automatic painting work, only relatively weak illumination is required to monitor the operation of the coating device 9, so illumination through the side outlet 7 is sufficient; By using only lighting, the rapid removal function of the paint mist may be impaired due to disturbance of the downward laminar flow caused by the heat generated by the lighting equipment 16 directly facing the spray painting work area 2, and the paint mist removal function may be impaired, or the paint mist may be removed from the inner wall 2A. Inconveniences such as accelerated adhesion of mist can be avoided.

On the other hand, when workers work in the spray painting work area 2, the painting work is in a paused state and no paint mist is generated, so there is no problem with paint mist no matter where the lighting is performed, and there is no problem with paint mist from the side outlet. By providing lighting from a position higher than 7 and directly facing the spray painting work area 2, it is possible to ensure bright illumination over a wide range within the work area 2, improving working conditions for workers. can.

Furthermore, it can be placed on the side wall at any position facing the spray painting work area 2 through the side air outlet 7, or at a position higher than the side air outlet 7 directly facing the spray painting work area 2. However, the lighting fixture 16A,
16B itself does not support the ventilation gas blowing out from the side air outlet 7 or the ceiling air outlet 6.

〔Effect of the invention〕

As a result of the above, the ability to eliminate paint mist during automatic spray painting work and the ability to prevent paint mist from adhering to inner walls has been improved compared to what was previously possible, without any deterioration in practical lighting functionality. .

〔Example〕

Next, an embodiment of the present invention will be described based on FIGS. 1 and 2.

An air intake duct 1 is installed at the top of the painting booth that forms the painting line, and runs along its length. Temperature-controlled air for ventilation is supplied from the air intake duct 1 to the ceiling and left and right side walls of the room-shaped spray painting work area 2. forming an upper chamber 3 and a side chamber 4 supplied with
A ceiling outlet 6 is provided to blow out ventilation air pressurized into the upper chamber 3 from almost the entire surface of the ceiling of the spray painting work area 2 through a filter 5 in a downward laminar flow. Openings 7 are formed in the majority of both the left and right inner walls 2A of 2 in the spray painting work area 2.
The openings 7 are formed so as to extend in the front-rear direction.
is configured as a side outlet that blows out ventilation air pressurized and supplied to the side chamber 4 sideways.

A conveyor 8 is provided for carrying in and conveying the object A to the spray painting work area 2, and the object A to be painted is positioned at a set installation position on both sides of the conveyor 8 in the spray painting work area 2. A plurality of one-hand robot-type automatic painting devices 9 for spray painting are installed in parallel, and an exhaust port 10 is formed in the floor of the spray painting work area 2, located directly below the set installation position.

In other words, the merging effect of the downward laminar ventilation air flow from the ceiling outlet 6 and the lateral ventilation air flow from the side outlet 7, and the exhaust effect of the exhaust outlet 10 located directly below the location where the object to be coated is installed. Then, the ventilation gas flow state in the spray painting work area 2 is made into a flow state that concentrates toward the object A to be coated, thereby speeding up removal of excess spray paint mist, improving coating efficiency, and It is designed to prevent paint mist from adhering to the automatic painting device 9.

In the figure, reference numerals 11 and 12 indicate first and second mist removal devices, 13 and 14, which allow water to trap and remove the paint mist discharged from the exhaust port 10 together with the exhaust gas.
are an air supply fan and an exhaust fan, and 15 is a grating floor in the spray painting work area 2.

An airflow curtain F of ventilation air directed diagonally downward from the upper part of the horizontal outlet 7 toward the installation location of the object to be coated A is arranged almost continuously in the front and back direction of the spray painting work area 2 at a position higher than the machine base 9A of the coating device 9. The noise S generated by the airflow curtains F is provided on each side, and the guiding action of the airflow curtains F facilitates the merging of downward ventilation air and sideways ventilation air, and the barrier action of the airflow curtains F prevents the downward movement of paint mist. This is designed to more effectively prevent adhesion and accumulation on the coating device base section 9A.

A lighting fixture 16A is embedded in each of the left and right inner walls 2A located at a higher position than the side air outlet 7, with its dust-proof floodlight face directly facing the spray painting work area 2. In addition, lighting fixtures 16 are installed at the back of the chamber 4 on both the left and right sides.
B is arranged so that its light emitting face faces the spray painting work area 2 through the chamber interior space and the side air outlet 7.

In other words, during spray painting work where the operation of the automatic painting device 9 can be monitored from outside the spray painting work area 2 through the inspection window, only the lighting fixture 16B facing the work area 2 through the side air outlet 7 is turned on. As a result, during the spray painting work, the lighting equipment 1 directly facing the spray painting work area 2
6a, the paint mist removal function may be impaired due to the flow disturbance of the downward laminar ventilation air caused by the heat generated by the lighting fixture 16A, and the paint mist may adhere to the inner wall 2A. In addition, when a worker enters the spray painting work area 2 for teaching operation or maintenance of the automatic painting device 9, or for cleaning and maintenance, etc., the side air outlet 7 is A lighting fixture 16A directly facing the spray painting work area 2 at a high place is turned on to ensure bright illumination over a wide range of the work area 2.

[Another example]

Next, another embodiment of the present invention will be described.

Various improvements can be made to the specific structure of each lighting device 16A, 16B.

The side air outlet 7 may be constructed from a punching plate with a relatively large aperture ratio, or a punching plate made of a translucent material, instead of a simple opening, from the lighting fixture 16B. Various configuration changes are possible as long as the configuration allows the irradiated light to pass through.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, with FIG. 1 being a schematic vertical sectional view and FIG. 2 being a schematic plan view. 2... Spray painting work area, 6... Ceiling outlet, 7
...Side outlet, 10...Exhaust port, 16A, 16B
...Lighting equipment.

Claims (1)

[Claims] 1 Spray painting work area 2 equipped with automatic painting equipment 9
In contrast, a ceiling outlet 6 blows out ventilation gas in a downward laminar flow from almost the entire surface of the ceiling, a side outlet 7 blows out ventilation gas sideways from the side wall, and
The painting booth is provided with a floor exhaust port 10 for discharging surplus spray paint mist together with the gas in the area, and a lighting fixture is attached to the side wall, the lighting fixtures 16A, 1
6B are arranged at a position higher than the horizontal outlet 7 and directly facing the working area 2, and at a position facing the working area 2 via the horizontal outlet 7.