JPH02169061A - Powder coating device - Google Patents

Abstract

PURPOSE:To appropriately set the direction of an air current and the air quantity and to surely recover a surplus powder paint by providing a channel member having an open groove for supplying and discharging air on one or more parts among the side wall, floor and ceiling of a coating booth. CONSTITUTION:A powder paint is sprayed by a spray gun 17 onto the material 15 to be coated placed in the coating booth 4 to coat the material 15. The channel member 5 having an open groove 5a for supplying and discharging air is provided on one or more parts among the side wall, floor and ceiling of the booth 4. As a result, the direction of an air current and the air quantity can be appropriately set, the surplus powder paint is completely and surely recovered, and the deposition of the paint on the inner surface of the booth can be controlled.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention provides a powder coating device for spraying a powder coating onto an object to be coated using a spray gun to form a coating film on the surface of the object to be coated. It is related to.

[Jt technique of position]

2. Description of the Related Art Conventionally, when painting objects with powder coatings, an exhaust dust collection enclosure has been used as a coating booth for purposes such as preventing the powder from being unnecessarily diffused into the atmosphere.

In such conventional painting booths, powder paint is sprayed onto the object to be painted from a spray gun.

Excess powder that has fallen is sucked out by an external dust collector through a duct from a hopper installed on the floor or side wall (conventional example 1); oversprayed powder paint is received by a belt conveyor, and then Furthermore, after collecting with a collection head, it is sucked out with a dust collector (
Conventional example 2): Simply insert a round or square duct into the paint booth.

Excess powder paint is sucked out by the dust collector through these ducts (conventional example 3), and in the type that is directly connected to the dust collector, a hole is provided between the enclosure on the spray gun side and the dust collector, and the dust collector is sucked out from the spray gun side. A device in which the liquid is sucked out (Conventional Example 4) has been proposed.

[Problem to be solved by the invention]

However, in the powder coating apparatus of Conventional Example 1, I! In order to concentrate the excess powder on the I wall and floor, there are major manufacturing and economic constraints due to the shaping and processing of the hopper, and in Conventional Example 2, the equipment is large and expensive, and
Conventional Example 3 is advantageous in terms of configuration and cost, but
Powder paint adheres to the side walls and top of the painting booth, making cleaning difficult, and furthermore, in Conventional Example 4, the painting booth itself is large.

Furthermore, there were other problems, such as a complicated internal structure and difficulty in cleaning.

This invention was made by focusing on these conventional problems. 1. A channel member is used to construct an air supply/exhaust passage for forcibly discharging powder paint, and this is connected to the inside of a painting booth. By simply laying this on the side walls, floor, top, etc., you can optimize the airflow direction and air volume settings, completely and reliably collect excess powder paint, and also prevent the inside of the painting booth. Powder coating equipment I that can suppress adhesion and allow easy cleaning of the inside of the painting booth.
The purpose is to obtain.

[Means for Solving Problem 1] A powder coating apparatus according to the present invention sprays coating powder with a spray gun onto an object to be coated that is installed in front of a powder application panel in a coating booth to coat the object. In a powder coating equipment in which powder paint is coated and fallen powder is collected in a fallen powder collection box, an opening groove for air supply or exhaust is provided in at least one or more of the side walls, floor, and top of the coating booth. A channel member with .

[Effect]

The channel member according to the present invention has an opening groove over its entire length, so that air can be smoothly and uniformly supplied into or exhausted from the coating booth over its entire length.
This allows you to set the direction and volume of airflow into the painting booth through the opening groove.

It can be easily carried out in a pattern suitable for discharging without concentrating excess powder paint in one part. 1. Enables quick collection of excess powder by forced air supply and prevents paint powder from entering the coating booth. Try to suppress adhesion as much as possible.

〔Example〕

Below, a case will be described in which an embodiment of the present invention is used for multiple colors. FIGS. 1, 2, and 3 are a front view, a plan view, and a side view showing the powder coating apparatus of the present invention. The main body is a painting booth 4 consisting of. The coating booth 4 has a frame such as a support column formed by a channel member 5 having an opening groove 5a.

The above-mentioned side walls 1. are attached to these channel members 5. Panels to be described later that constitute the top part 2 and the floor part 3 are attached to form a box shape as a whole. Here, the channel member 5 is
As shown in FIGS. 4(a) and 4(b), an opening groove 5a is provided along the entire length toward the inner surface of the coating booth 4, and among these, the one shown in FIG. 4(a) is Air supply from one end of the.

A fold-in portion 5b is provided in order to make the process as uniform as possible to the other end. Note that these channel members 5 can be used depending on the size of the painting booth 4, etc. Reference numeral 6 denotes air supply or exhaust pipes that are connected to a plurality of corners of the channel member 5, which is the frame, and an air volume control valve 7 is provided in the middle of these pipes. In addition, each of these vibros is arbitrarily used for air supply and exhaust to ensure the planned airflow direction and air volume, and at this time, the opening/closing control of each air volume control valve 7 is performed as necessary. be done. Reference numeral 8 denotes a compressed air plug detachably provided at the end of the channel member 5 constituting the floor 3, and is used to remove accumulated powder paint and other waste when cleaning the inside of the painting booth 4. etc. will be opened. Reference numeral 9 denotes a frame on which one painting booth 4 is placed. Moreover, as shown in FIG. 5, the distance between each channel member 5 is as follows.
The inner and outer panels 10.
It is blocked by 11.

Further, in FIG. 1, reference numeral 12 denotes two hanging fittings protruding from the rear side wall 1, from which a powder cover panel 13 is detachably suspended, and at four locations on the front part of the hanging fittings. As shown in Figure 6, four round channel members 14 are arranged.
It is inserted vertically into the paint booth 4 through the. In addition, as shown in FIG. 7, this channel member 14 is
In the coating booth 4, an opening groove 14a is provided in the longitudinal direction. Further, 15 is an object to be painted, and a powder application panel 13
It is adapted to be suspended by a hanging tool 16 at the front part of the body. The object to be coated is conveyed continuously by a conveyor, but this figure is a hanging type for explanatory purposes. 4 and 17 spray powder coating onto the object 15 toward the powder application panel 13 side. It's a spray gun, and this is attached to the front. The spray gun 17 can be of an automatic type using a reciprocator or the like, or of a manual hand gun type. Further, a fallen powder collection box 20 is placed on the floor 3 to receive excess powder falling from above. Note that 17 is an air volume control valve such as a damper provided on a pipe 18 connected to the channel member 14.

Next, the operation will be explained.

In a powder coating apparatus having such a configuration, when applying one load of multicolor powder, first the powder applying panel 13 is attached to the hanging fitting 12.
The object to be coated 15 is further hung from the hanging tool 16. Subsequently, each channel member 14 is passed through the vibro.
At the same time, compressed air is sent into the painting booth 4 from the round channel members 1 and 1 and the bottom channel member 5.
Try to breathe in the air inside. Next, the paint powder of a predetermined color selected in advance is applied to the object 1 using the spray gun 17.
Inject towards 5. Then, a part of the sprayed powder paint directly hits the object to be coated 15 and coats it according to the electrostatic coating method, while another part of the powder paint hits the powder coating panel 13 and coats it according to the electrostatic coating method. It is reflected and coats the back and side surfaces of the object IS. Furthermore, the powder paint that was not coated on the object to be coated is applied to the side wall 1 of the painting booth 4. Tenbu 2. The compressed air ejected from the opening of the channel member 5 heading into the enclosure on the floor 3 is forcibly moved from the periphery of the channel member 5 to the center of the coating booth 4, and the top part is collected in a fallen powder collection box. . On the other hand, the insides of the opening grooves 14a of the four round channel members 14 provided near the center are under negative pressure through the pipes 18, so fine particles of powder move inward from the periphery. The body paint flows through the channel member 14 through the opening groove 14a.
．． It is discharged to the outside through pipe 18. In addition, powder paint on the top part that falls inside the painting booth 4 is collected in a falling powder collection box 2.
The powder paint accumulated on the floor 3 is sucked into the channel member 5 of the floor 3 and discharged.

In this way, after finishing the powder coating, another 11i,
When painting the object 15 in a different color from the previous one, replace the powder paint loaded in the spray gun 17, replace or clean the powder application panel 13, and replace the fallen powder collection box 20. It is possible. And if you need a full cleaning.

After that, the powder paint accumulated on the side wall 1 and the bottom part 3 is stirred up with a spatula and dropped into the opening groove 5a of the channel member 5 around the side wall 1 and the bottom part 3, and the inside of the channel member 5 of the bottom part 3 is drawn to negative pressure. , cleaning inside the painting booth can be completed quickly and easily. Although not shown in the drawings, a filter material is attached to the opening groove 5a of the channel member 5 dedicated to air supply.

Further, in the above embodiment, the channel member 5 is connected to the side wall 1. Although the case where the frame is provided as a frame at the corner part of the painting booth 4 consisting of the top part 2 and the floor part 3 has been described, it is provided in the flat part of the side wall 1 as shown in FIG. It can also be provided so that it becomes - and the road surface. Therefore, according to this, the air supply and exhaust through the channel member 5 can be made more efficient, and multiple air supply and exhaust can be performed.

Furthermore, as shown in FIG. 9, the channel member 5 has the opening groove 5a facing the orthogonal surface at the corner, so that the powder coating can be easily removed by spatula work and air blowing. It can be poured into the groove. Moreover, in the floor part 3, one or more can be laid not only in the corner part but also in the middle of the internal panel 10 as shown in FIG. In this case, it is necessary to provide the panel 10 with a slit that communicates with the opening groove 5a. moreover,
When this channel member 5 also serves as a frame forming the paint booth 4, it is advantageous in terms of manufacturing, economy, and structure.

Furthermore, the hopper structure as mentioned above is no longer required,
Therefore, any material such as stainless steel, plastic, or glass can be used for the side wall 1 of the painting booth 4, and the directionality and air volume of the airflow inside the painting booth 4 can be arbitrarily and appropriately set by using the channel member 5゜14. Therefore, it is possible to effectively suppress the powder paint from flowing into the four rows of painting booths, and it is also possible to effectively prevent the powder paint from adhering to the wall surface.

Further, the opening groove 5a of each channel member 5 is connected to the side wall 1, the top portion 2. By providing it on the same plane as each panel 10 inside the floor part 3, powder paint scraped off with a spatula can easily fall into the channel member 5.

The advantage is that the cleaning operation can be speeded up and repainting with a different colored paint powder can therefore be done quickly.

Note that the channel members 5 and 14 used for air supply can be used for exhaust, and the compressed air can be reversely flowed to improve the efficiency of discharging the coating powder.

[Effects of the Invention J As described above, according to the present invention, in a powder coating apparatus that sprays powder coating material with a spray gun to an object to be coated located in a coating booth,
Channel members with opening grooves for air supply or exhaust are installed in at least one or more of the side walls, floor, and top of the painting booth, so that forced air supply and exhaust can be carried out at important points in the painting booth. Powder paint can be efficiently discharged, and powder paint adhering to side walls, ceilings, and floors can be scraped off and cleaned with air blowing easily and quickly, even in every corner. Effects such as being able to suppress adhesion of powder paint to the side walls and the like can be obtained.

In addition, by installing the channel member in the space inside the painting booth, it is possible to prevent the powder paint in this space from adhering to the inner wall surface, while enabling efficient collection and discharge6.

[Brief explanation of the drawing]

Fig. 1 is a front view showing an embodiment of the powder coating apparatus of the present invention, Fig. 2 is a plan view, Fig. 3 is a side view, and Figs. 4 (a) and (b) show a channel member. 5 is a sectional view showing the main parts of the coating booth, FIG. 6 is a side sectional view of the powder coating apparatus shown in FIG. 1, and FIG. 7 is a perspective view showing other channel members. FIG. 8 is a plan view of the side wall showing another channel installation structure, and FIG. 9 is a plan view of the floor showing still another channel installation structure. 1...Side wall, 2...Top, 3...Floor, 4...Painting booth, 5, 14...Channel member, 5a. 14a: Opening groove, 13: Covering panel, 15: Object to be painted, 17: Spray gun. Figure 1 1: # l arm 4: Fallen booth 2: Decoration 3: Floor 5.14: Nayane 1 (1, # Figure 2 Patent applicant Agent patent attorney Aitoku Engineering Co., Ltd. Sakai - Makoto Kanesaka F1 Shigeru Kanesaka Diagram (a) (b) Diagram Diagram

Claims (1)

[Scope of Claims] 1) In a powder coating device that sprays powder paint onto objects to be coated located in a coating booth using a spray gun, the side walls, floor, and ceiling of the coating booth are A powder coating apparatus characterized in that a channel member having an opening groove for supplying or exhausting air is disposed in at least one or more of the parts. 2) The powder coating apparatus according to claim 1, wherein the channel member is provided in a space of the coating booth surrounded by the side walls, the floor and the top.