JPH07116570A - Cleaning device for powder coating booth - Google Patents

Abstract

PURPOSE:To provide a cleaning device for powder coating booth capable of performing cleaning work without allowing the worker to enter the powder coating booth and to prevent scattering of the powder coating material outside the booth. CONSTITUTION:A sucking head 10 having a sucking port in opposite to the inner wall face of the booth 1 is formed at the top of a sucking duct, and an ejection nozzle 11 ejecting air or water toward the inner wall face of the booth 1 is attached to the sucking head 10 and also the sucking head 10 is made movable along the inner wall face of the booth 1 by a moving means.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for cleaning an inner wall surface of a booth for powder coating.

[0002]

2. Description of the Related Art In powder coating in which powder coating is sprayed onto an object to be coated, the powder coating booth is adhered to the inner wall surface of the powder coating booth in order to prevent color mixing when changing the color of the powder coating. The powder coating that is present needs to be removed by cleaning.

Conventionally, the cleaning work of the inner wall surface of the powder coating booth has been performed by an operator entering the booth and manually blowing or washing the inner wall surface of the booth with water.

However, in such cleaning work, the worker is exposed to the powder coating material, and the powder coating material is scattered outside the booth due to the strength of the air blow and the water washing. There is a problem that it significantly harms the environment.

Further, in the manual cleaning work, a difference in the degree of cleaning is apt to occur, color mixing may occur at the time of color change, and defective coating may occur.

Further, in order to eliminate the work in the booth by the worker, the booth wall surface is covered with a film, and when the color is changed, the film to which the powder coating is adhered is wound up and replaced with a new film. .

However, according to this method, since the used film to which the powder coating material is attached is discarded, there is a problem as industrial waste, and there is also a problem that the cost becomes high.

Therefore, the present invention provides a cleaning apparatus for a powder coating booth, which enables an operator to perform a cleaning operation without entering the booth and prevent the powder coating material from scattering outside the booth. It is the one we are trying to provide.

[0009]

In order to solve the above problems, the present invention provides a suction head having a suction port facing the inner wall surface of the booth at the tip of the suction duct, and the booth is provided in the suction head. An injection nozzle for injecting air or water toward the inner wall surface is provided, and the suction head can be moved by the moving means along the inner wall surface of the booth.

[0010]

When air or water is jetted from the jet nozzle in the suction head toward the inner wall surface of the booth, the powder paint adhered to the inner wall surface of the booth is peeled off by the force of the air, and the peeled powder paint is sucked. It is sucked into the suction duct from the head and does not scatter outside the booth.

Since the suction head can be moved by the moving means along the inner wall surface of the booth,
Cleaning work can be done from outside the booth.

[0012]

EXAMPLE An example of a powder coating booth equipped with the cleaning device according to the present invention will be described below.

The booth 1 includes right and left side walls 2 facing each other,
It is constituted by a ceiling wall 3, a front wall 4 and a rear wall 5 which are respectively provided at the upper end and the front and rear ends of the left and right side walls 2, and the left and right ceiling walls 3, front wall 4 and rear wall 5 are covered with each other. A space through which the coated object A passes is formed. Above the space formed between the left and right ceiling walls 3, a transfer rail 6 is installed to suspend the article A to be coated and pass through the booth 1. Also, on the bottom of Booth 1,
As shown in FIG. 2, the filter belt 7 is installed.

The cleaning device 8 is installed outside the booth 1 during the painting work and is housed in the booth 1 during the cleaning work. The cleaning device 8 housed in the booth 1 is moved in the booth 1 by the moving means and cleans the inner wall surface of the booth 1 during the movement.

As means for moving the cleaning device 8, a method of pulling the cleaning device 8 from outside the booth 1 with a wire or the like,
Alternatively, there is a method of loading a drive source on the cleaning device 8 and causing the cleaning device 8 to run by itself.

The cleaning device 8 passes the suction head 10 connected to the suction duct 9, the jet nozzle 11 installed in the suction head 10, and the suction head 10 from outside the booth 1 to inside the booth 1. It consists of transportation means.

The suction heads 10 are separately provided on the left and right side walls 2. Each of the suction heads 10 is a member having a narrow width in the front and rear and having a U-shaped cross section in which the side facing the inner wall surface of the booth 1 is opened and serves as a suction port.
It is formed along the side wall 2 and the ceiling wall 3. Between the suction port of the suction head 10 and the inner wall surface of the booth 1,
A slight gap is formed.

At the upper and lower ends of the suction head 10, on the outer surface of the ceiling wall 3 of the booth 1 and the floor surface on the side of the booth 1,
Wheels 14 mounted on the installed front and rear rails 12 and 13,
15 is attached, and the suction head 10 is attached to the rails 12, 13
It is possible to move along.

Inside the suction head 10, the booth 1
Two cleaning pipes 16 having an injection nozzle 11 for injecting air or water toward the side wall 2 and the ceiling wall 3 are installed at the front and rear.

A suction duct 9 and a supply pipe 17 for supplying air or water to the cleaning pipe 16 are connected to the lower end of the back surface of the suction head 10. The suction duct 9 and the supply pipe 17 serve as a suction head 10.
Is formed by a flexible pipe so as not to hinder the movement of the. A suction / collection device is connected to the suction duct 9.

As described above, the suction head 10 is mounted on the ceiling wall 3 of the booth 1 and the front and rear rails 12 and 13 set on the side floor of the booth 1 via wheels 14 and 15, respectively. The booth 1 is moved from one end to the other end and passes through the booth 1 by an appropriate moving means. When the suction head 10 enters the booth 1 from the outside of the booth 1 and conversely exits the booth 1 from the inside of the booth 1, the suction head 10 is prevented from hitting the front wall 4 or the rear wall 5 of the booth 1. As shown in, the front wall 4 or the rear wall 5 of the booth 1 is designed to be opened.

Injection nozzle 1 inside the suction head 10
1 is installed so that the powder paint adhered to the inner wall surface of the booth 1 is easily peeled off, as shown in FIG. Has been done. Further, in order to improve the peeling of the powder coating adhered to the inner wall surface of the booth 1, as shown in FIG. 6, a brush 18 may be installed inside the suction head 10. Further, as shown in FIGS. 7 and 8, the suction head 1
The rotary brush 19 is installed inside the 0, and the rotary brush 1
The injection nozzle 21 may be formed on the rotating shaft 20 of the nozzle 9. By forming the spray nozzle 21 formed on the rotary shaft 20 of the rotary brush 19 in the direction of the tangent to the rotary shaft 20, the rotary brush 19 can be rotated by the air pressure or the water pressure sprayed from the spray nozzle 21.

Of the powder coatings, epoxy-based and polyester-based coatings can be cleaned sufficiently by spraying air or water from the spray nozzles 11 and 21, while acrylic-based coatings have no releasability. Since it is bad, it is desirable to use the brush 18 and the rotating brush 19 together.

The air jetted from the jet nozzles 11 and 21 may be air from a compressor air or a blower, but ionized air may be used in order to remove static electricity and improve peelability.

If a sponge or waste cloth is attached to the outer surface of the suction head 10 on the rear side in the moving direction so as to contact the inner wall surface of the booth 1, the cleaning effect is further improved.

In the above embodiments, the cleaning device 8 is provided separately on the left and right, but in the embodiments shown in FIGS.
The left and right cleaning devices 8 are formed in a gate shape connected at the ceiling. In this way, when the left and right cleaning devices 8 are connected at the ceiling portion, the cleaning device 8 is installed in the booth 1.
Even if the cleaning device 8 is pulled out to the outside, if the cleaning device 8 is located at the front and rear positions of the booth 1, that is, on the transfer passage of the article A to be coated,
The hanging device for conveying the object A to be coated is a gate-type cleaning device 8
Since the object A to be coated cannot be conveyed by hitting the ceiling part of the above, when the cleaning device 8 is configured in a gate type, the cleaning device 8 must be evacuated from the transfer passage of the object A during the coating work. I have to. Therefore, in the embodiment shown in FIGS. 9 to 11, the rail 1 for moving the gate-type cleaning device 8 is used.
Bend 2 and 13 to the outside of booth 1,
The cleaning device 8 can be retracted to the side of the transfer passage for the object A during the coating operation. Further, when the rail 12 installed on the ceiling wall 3 of the booth 1 crosses the transport passage at the bent portion, the suspending device for the article A hits the rail 12 that crosses the transport passage.
One of the two is stopped at the front part of the transfer passage, and from the bent part to the front, the cleaning device 8 has two rails 13 on the floor and one rail 12 of the ceiling wall 3 of the booth 1.
Guided by books.

[0027]

As described above, according to the present invention, air or water is directed toward the inner wall surface of the booth from the jet nozzle provided inside the suction head while the inner wall surface of the booth is sucked by the suction head. Since the powder paint can be peeled off by spraying, the booth cleaning operation can be performed without scattering the peeled powder paint around.

Further, since the suction head can be moved by the moving means along the inner wall surface of the booth, the cleaning work can be performed from outside the booth, so that the safety of the worker can be secured.

[Brief description of drawings]

FIG. 1 is a perspective view showing an example of a powder coating booth using a cleaning device according to the present invention.

FIG. 2 is a vertical sectional front view of the same.

FIG. 3 is a side view of the above.

FIG. 4 is a plan view of the above.

FIG. 5 is an enlarged transverse sectional view of the suction head portion of the above.

FIG. 6 is an enlarged cross-sectional view showing another example of the suction head portion of the above.

FIG. 7 is an enlarged cross-sectional view showing another example of the suction head portion of the above.

FIG. 8 is a partial front view of the example of FIG.

FIG. 9 is a vertical sectional front view of another embodiment.

FIG. 10 is a plan view of FIG.

FIG. 11 is a side view of FIG.

[Explanation of symbols]

 1 Booth 2 Side Wall 3 Ceiling Wall 4 Front Wall 5 Rear Wall 6 Conveyor Rail 7 Filter Belt 8 Cleaning Device 9 Suction Duct 10 Suction Head 11 Injection Nozzle 12, 13 Rail 14, 15 Wheel 16 Cleaning Pipe 17 Supply Pipe 18 Brush 19 Rotation Brush 20 Rotating shaft 21 Injection nozzle

Claims (4)

[Claims] 1. A suction head having a suction port facing the inner wall surface of the booth is provided at the tip of the suction duct, and an injection nozzle for injecting air or water toward the inner wall surface of the booth is provided in the suction head. Moreover, the powder coating booth cleaning device is characterized in that the suction head can be moved by the moving means along the inner wall surface of the booth. 2. The powder coating booth cleaning device according to claim 1, wherein a brush that abuts an inner wall surface of the booth is provided in the suction head. 3. The brush is a rotary brush, and the jet nozzle is formed on the rotary shaft of the rotary brush.
The powder coating booth cleaning device described. 4. The powder coating booth cleaning device according to claim 1, wherein ionized air is used as the air jetted from the jet nozzle.