JPS60220162A - Spray painting booth - Google Patents

Abstract

PURPOSE:To rapidly discharge excessive spray paint mist, by providing a downwardly directed blowoff port for downwardly blowing off ventilation gas and a horizontal blowoff port for blowing off said gas sideways and providing an exhaust port for exhausting the confluent gas to a direction extending along a flowing direction. CONSTITUTION:The entire surface of a ceiling 17 is formed into a downwardly directed blowoff opening S1 for blowing off and supplyin air, which is supplied to an upper chamber 18 under pressure from an air supply fan 9, into a chamber in a downwardly directed laminar flow pattern through a filter 19. Further, horizontal blowoff openings S2-S5 each made of a punching plate, which sideways and horizontally blow off and supply air supplied to both side chamber 21A, 21B and front and rear chambers 21C, 21D under pressure from the air supply fan 9 in a laminar flow pattern through a filters 22, are formed to said chambers 21A-21D. Confluent air of ventilation air blown off from the downwardly directed blowoff opening S1 and that blown off from the horizontal blowoff openings S2-S5 is exhausted from an exhaust port 23.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a booth for spray painting automatic single bodies, casings of home appliances, etc., and more particularly to ventilation equipment thereof.

Conventionally, when configuring the ventilation equipment in the above-mentioned spray painting booth, as shown in Figs. In addition to providing a ceiling outlet (Sl) for supplying air,
Exhaust port (c) that discharges the indoor night air along with the surplus spray paint mist it contains through almost the entire surface of the lattice floor (7)
The ventilation air should be distributed under the floor (7), and the ventilation air should be made to flow in a downward laminar flow throughout the entire area of the booth. suppresses the airflow and enhances the ventilation effect, thereby increasing the Boo 7V
(c) Improved maintainability by reducing paint adhesion to internal painting equipment, etc., and quickly discharging floating paint mist to prevent color transfer due to residual paint mist between objects of different colors. K and K made sure that the transfer and exchange of the coated objects could be carried out efficiently.

In the figure, the object to be coated (8) is an articulated robot type automatic painting device equipped with a spray gun (8A), and (5) is a conveyor for carrying in and out the surface of the object to be coated.

However, in the conventional treatment mentioned above, various 9
As a result of one experiment, it was found that the ability to move the ventilation air in a laminar flow downward throughout the entire area in the booth was effective for the coating equipment (8) placed on the side of the aluminum tiles (8BIK). Since the ventilation air containing excess spray paint mist is sprayed from above, 1. This spraying causes a large amount of paint mist to be sprayed onto the peripheral coating equipment (8) base (8B).
), and the deposited paint dries naturally and peels off easily, causing vibrations and replacement of the coating equipment (8)! It detaches due to the sword flow and adheres to the painted surface of the object to be coated1-, which not only causes coating defects, but also causes failures in automatic coating equipment, which is becoming increasingly complex and sophisticated.
In order to prevent this, a great deal of frequency and time is required for cleaning and maintenance, which also causes a decrease in production efficiency.

The present invention is a rational improvement to the flow of 9IC glc bodies, and can effectively prevent paint from adhering to the surrounding coating equipment of the object to be coated, while maintaining the function of quickly removing surplus spray paint mist in the booth. The object of the present invention is to improve the coating efficiency of the sprayed paint on the object to be coated.

The spray painting booth according to the present invention is characterized by being provided with a downward outlet that blows ventilation gas downward and a sideways outlet that blows out the 91cgK body sideways, and the combined gas from both the outlets is An exhaust port is provided for discharging air in a direction substantially along the flow direction of the air, and the horizontal outlet and i1! At a position higher than the automatic coating equipment stand placed between the coating material, and
! The height direction of the DI recording horizontal exit is approximately at the middle part.
An inclined guide for guiding the gas is provided, which has an upper surface that slopes downward from the outlet facing the IF telr toward the coating material side, and its functions and effects are as follows.

In other words, as shown in Fig. 1, the merging effect of the ventilation gas blown out downward and the ventilation gas blown out sideways, and
By exhausting the combined gas in a direction along the flow direction and by the guiding action of the guide @, almost the entire amount of the supplied ventilation gas is made to flow so as to be concentrated on the object to be coated.

Therefore, due to the smooth flow of the combined ventilation gas toward the exhaust port (c), excess spray paint mist floating in the booth can be quickly removed.

In addition, due to the sideways blowing of ventilation gas, the downward ventilation gas is deflected to the open side of the object to be painted, and the guide K guides the ventilation gas to the open side of the object to be painted, which causes excess spray paint mist to be contained. Exchange 9 from above! c9, there is a horizontal outlet (Ss) that can avoid spraying on the object to be coated (the base (8B) of the coating device (8) on the A18 side) and is located below the guide @. The ventilation gas blowing out K from the Ss) part also prevents the ventilation gas containing excess spray paint mist from being drawn into the lower part of the guide (assembly), and the painting equipment (8) It is possible to reliably prevent paint from adhering to the machine base (8B).In addition, the guide (
It is also effective to prevent paint mist contained in the ventilation gas from above from adhering to the guide (goods) itself due to the flow of ventilation gas at a relatively high speed along the inclined guide surface (24A) K of the guide (goods). can be avoided.

Furthermore, since the ventilation gas flows so as to concentrate on the surface of the object to be coated, no matter which direction the sprayed paint is sprayed on the object to be coated (AIK), the flow of ventilation gas backs up the sprayed paint. It is possible for the paint to reach the painted surface of the object to be coated, and also to prevent the surplus spray paint mist that is generated from spraying from the surface of the object to be coated to scatter and spread into the space inside the booth. (AIK can be suppressed by concentrated ventilation gas, and together these factors can also improve the application efficiency of spray paint.

As a result of the above, it is possible to replace the object to be coated with the same pressure efficiency as before while preventing color transfer due to residual paint (mistake) K, maintaining high painting work efficiency, and painting around the object to be coated. The frequency and time of cleaning and maintenance for the equipment can be greatly reduced, improving maintainability, and reducing constraints on production time due to maintenance, further improving production efficiency, and improving the efficiency of cleaning and maintenance on the coating surface of the workpiece. We have created a spray painting booth that can reduce the rate of paint defects due to dust adhesion, and has high coating efficiency and excellent painting workability.

Next, embodiments of the present invention will be described based on FIGS. 1 to 8.

The front wall of the spray painting room (1) is shaped like a rectangular parallelepiped (
2), and a rear wall 131K, a trolley (4), a conveyor (5), a conveyor (5), and a floor formed by a lattice member to carry in and out the warehouse for carrying in and out. 171
K, an articulated robot type automatic painting device (8) equipped with a spray gun (8A) is installed on a IIIE conveyor 151.
along the conveyance direction of the object to be coated by K, on both the left and right sides thereof,
With this, a coating booth is constructed in which the spray coating material stopped at a predetermined position in the spray coating room (1) is sprayed and coated by the automatic operation of the coating device (81) based on a preset time schedule. It is.

An air supply fan 19) is provided to supply ventilation air into the painting room (1), and an exhaust fan Oα is provided to exhaust indoor air together with excess spray paint mist through the 7+ lattice floor (7). , and these two fans (9) and 00 are configured to forcefully ventilate the inside of the painting room (1) in order to remove excess spray paint mist.

In the exhaust system path (7) for the exhaust fan αaVC, wash water (W) is allowed to flow down along the upper surface of the floor (7).
), the pan αυ is placed under the floor (7) so that it covers almost the entire surface of the floor (7), and the cleaning water that overflows from the pan (7) is removed.
The opening shape in plan view allows the exhaust gas to pass downward at high speed while preventing the adhesion of paint mist. 1Ii of high-speed discharge gas from pipe ■
As the paint mist in the exhaust gas is collided with the stored water surface of the cleaning water tank α3 located below the pan beating, the paint mist in the exhaust gas is captured as the stored cleaning water (Wl) by utilizing the difference in inertial mass.
This constitutes the first minute removal device for separating and removing paint mist from exhaust gas.

In addition, the exhaust system path (
In 3), the large-diameter paint mist and paint particles are roughly removed from the first mist removal device aarrc, and the exhaust gas is combined with overflowing cleaning water (W) into an S-shaped bent pipe. [＋! l: A first mist that allows small-diameter paint mist to flow down at iF speed and captures the falling cleaning water (Ws) K using the difference in inertial mass, similar to the first mist remover αΦ, by the centrifugal action that accompanies it. It is equipped with a removal device 06).

! To configure the ventilation structure for I11 painting room (1) K,
Almost the entire surface of the ceiling αη is connected to a downward air outlet (S ) K formed, Ga, painting room (1)
The left and right (Qll wall (2OA), (BOB), and front and rear walls +21, +31 are preferably in the range of lower @ // 3 to 2/3 of Fan (9) to both side chambers (21A), (21B)%
And front and rear chambers (21C), (21D) K Horizontal blow-off ports (Ss to si) made of punched plates that blow out pressurized air into the room in a laminar flow horizontally through a filter ■. It is formed.

And the front P exhaust pipe c as the indoor air exhaust port (c)
The slit-shaped opening of Iz is arranged below the stop position of the object to be coated (2), and the left and right side walls (2QA).

Plate-shaped guide 0 for guiding ventilation gas with an upper surface (cA) that slopes downward from the (BOB) surface toward the coating object 111
+>, 411111 (gOA), (BOB) from the middle part in the height direction of the K-forming Lt hammered air outlet (sa), (Sl) to the rear side of the mount (8B) of the coating device f 181. Supply ventilation is achieved by discharging the combined air from the exhaust port (c) below the object to be coated in a direction substantially along the flow direction, and by the guiding action of the guide for the flowing ventilation air. The structure is such that the entire amount of air flows through a portion where the AlK to be coated object is concentrated.

Although the concentrated flow of ventilation air toward the object to be coated quickly discharges excess paint mist and improves coating efficiency, it also prevents downward ventilation air from being blown out toward the tank. Due to the biased flow toward the coating material (Al pill) and the guidance of the guide ■, the floating sword containing excess sprayed paint mist from above reaches the base (8B) K of the coating device (8) around the coating material.
To avoid being sprayed, and to blow out ventilation air from the vents (Ss) and (Sa) located below the guide, ventilation air containing excess paint mist is removed. The bottom is 1 clN to prevent paint from getting caught under the guide, and to reliably prevent paint mist from adhering to the coating equipment base (8B) due to spraying or getting caught.

Next, the other actual flow side will be explained.

1rtln wall 121, 131 shaped air outlet (843).

(S6) may be omitted.

Downward outlet (Sl) and sideways outlet Css~S,
) can be improved in various ways, and the structure of the exhaust port (to) can also be improved in various ways.

The specific shape of the guide equipped with the inclined upper surface (24A) for guiding gas of the invertible frame located below the test object II+11.

and 1. Various improvements can be made to the mounting structure, and the specific angle of inclination of the inclined upper surface (24A) can also be changed as appropriate.

Further, the end of the guide on the side of the object to be coated may be formed with a clear bend.

The blowout air volume ratio and the blowout speed ratio between the ventilation gas from the downward blowout port (S11) and the ventilation gas from the sideward blowoff ports (Ss to Ss) can be adjusted as appropriate.

[Brief explanation of the drawing]

1 to 8 show embodiments of the present invention. FIG. 1 is a longitudinal sectional view, FIG. 2 is a schematic plan view, and FIG. 8 is a partially cutaway perspective view. 4 and 6 show a conventional example, with FIG. 4 being a longitudinal sectional view and FIG. 5 being a schematic plan view. (8)・・・Automatic painting device, (8B)・・・
・Machine base, ■...Exhaust port, (Foundation)...Guide, (24^)...Inclined upper surface for guidance, (S,
)...Downward air outlet, (81~S,)...
...Horizontal air outlet. Agent Patent Attorney Osamu Kitamura

Claims (1)

[Claims] Downward outlet that blows ventilation gas downward (S, )
and sideways outlet (S,) to blow out ventilation gas sideways.
Si) and both air outlets (Sl) and (Sm) are provided.
-Ss) is provided with an exhaust port (to) for discharging the combined gas in a direction along the flow direction thereof, and is arranged between the horizontal outlet (Ss-S,) and the shed to be coated. At a higher position than the machine base (8B) of the device (8), and! rl
The horizontal air outlet (Ss-5s) has an upper surface (B
4A) A spray W1 installation booth equipped with a tilted guide @ for guiding ventilation gas.