JPH075889Y2 - Double-sided washing booth and spray coating equipment equipped with double-sided washing booth - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention is provided with a water-washing booth and a water-washing booth which are installed at the rear of an object to be coated to collect extra paint sprayed from a spray gun. Regarding spray coating equipment.

[Conventional technology]

In the coating of articles, the same article is often applied more than once, such as topcoating and undercoating.

In this case, the paint is applied to each paint by a spray gun, but in general, a paint booth is provided for each paint in order to prevent other paints from mixing with the object to be painted.

Particularly, when spray coating is carried out at a plurality of positions along the transfer line while simultaneously transferring a plurality of objects to be coated using the transfer device, a plurality of washing booths can be installed along the transfer line.
Since it is necessary to install the units one by one, the dead space becomes large in the direction other than the front side facing the spray gun of the washing booth. Further, in a continuous spray coating apparatus using such a transport device, generally, each spray gun has a washing booth on the opposite side across the transport line, so that part of the paint sprayed from the spray gun It adheres to the conveyor etc. of the transfer line on the way. Therefore, there is a drawback that the transfer line cannot be operated unless it is stopped and cleaned regularly.

[Problems to be solved by the device]

In view of such a conventional situation, the present invention provides a washing booth that requires less installations than the number of times of painting when performing spray coating on the same object more than once. To reduce the installation area,
In particular, in a continuous spray coating apparatus using a transfer device, it is an object of the above-mentioned water washing booth to reduce the installation area of the device as compared with the prior art and to prevent paint from adhering to the transfer line.

[Means for Solving the Problems]

In order to achieve the above-mentioned object, in the present invention, two partition walls are provided on the pedestal so as to be opposed to each other, and the rear surfaces of the two partition walls are opposed to each other in a direction perpendicular to the partition walls. Two standing downflow walls, a water supply device for each downflow wall surface provided along the upper edge of each downflow wall surface, and a ceiling part that covers between the two partition walls above the downflow wall Provided is a double-sided washing booth, which is characterized by having an exhaust port provided in the.

The spray coating apparatus of the present invention equipped with the above double-sided water washing booth includes the above-mentioned double-sided water washing booth, two spray guns installed facing the downflow wall of the double-sided water washing booth, and at least a part of the transfer line. A transfer device for the object to be coated provided in a direction orthogonal to the flow-down wall of the double-sided water-washing booth, and two transfers for taking out the object to be coated from the transfer line and reciprocating between the flow-down wall of the double-sided water-washing booth and the spray gun. And a device.

〔Example〕

 Specific examples of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a cross-sectional view of the double-sided water washing booth 1, and FIG. 2 is a schematic plan view of a spray coating apparatus including the double-sided water washing booth 1.

As shown in FIG. 1, two partition walls 3 are provided on both sides of the pedestal 2 on a quadrangular frame-shaped pedestal 2 fixed on four legs.
Are provided so as to face each other, and the upper surface of the gantry 2 is covered with a bottom portion 4 continuous to the lower ends of the two partition walls 3, and the front side of the bottom portion 4 in the direction perpendicular to the partition wall 3 extends along the edge of the gantry 2. Then, it is the partition plate 5 that has stood up. A support base 6 is fixed to the center of the bottom portion 4 via short legs, and two flow-down walls 7 whose lower ends are fixed to the support base 6 have their back surfaces opposed to each other at right angles to the partition wall 3. It stands in parallel. On the back side of the upper end of the downflow wall 7, an elongated water storage part 8 is provided along the upper edge, and the water in the water storage part 8 overflows from the upper end edge of the downflow wall 7 to form a film on the surface of the downflow wall 7. It is about to run down.

Further, a water supply pump 9 for supplying water to the water storage section 8 is fixed on the support base 6 between the two flow-down walls 7, and a pumping pipe 10 of the water supply pump 9 is stored under the base 2. It is suspended in a mobile water supply tank 11 that has been opened. The water supply pipe 12 of the water supply pump 9 rises between the two falling walls 7,
Branching above and extending to the side of each falling wall 7 and forming a water injection pipe portion 13 opening above the water storage portion 8. Further, the bottom portion 4 is provided with a drain port 14, and the water flowing down the downflow wall 7 is drained by the drain port 14.
It goes through the strainer 15 and returns to the water tank 11.

On the other hand, above the water supply pipe 12 and the flow-down wall 7, a hood-shaped ceiling portion 16 continuous with the upper ends of the two partition walls 3 is provided so as to cover them, and an exhaust port is provided at the center of the ceiling portion 16. 17 is opened and connected to the exhaust duct via the exhaust fan 18. The front side between the ceiling part 16 and the partition plate 5 of the bottom part 4 forms an opening 19 so that the falling wall 7 is exposed.

In order to supply water to the surface of the downflow wall 7, the water injection pipe part 13 is extended along the upper edge of the downflow wall 7 regardless of the water storage part 8 and the downflow of the water injection pipe part 13 is performed. Multiple perforations may be provided side by side on the wall 7 side. In addition, water supply pump 9 and water supply tank 11
Instead of using the above, the water supply pipe 12 may be directly connected to a water pipe, or drainage may be directly flown to the drainage channel and sent to the treatment device.

The spray coating apparatus shown in FIG. 2 includes a circulating transfer line 22 that is provided between two rotary shafts 21, a supply hand 23 that sequentially supplies the object 20 to be transferred to the transfer line 22, and a coated object after coating. A take-out hand 24 for collecting the article 20 from the transfer line 22 is provided. One double-sided washing booth 1 is installed adjacent to one of the straight lines of the transfer line 22.
The flow-down wall 7 and the straight line direction of the transfer line 22 are orthogonal to each other. A spray gun 25 is installed in front of each falling wall 7 of the double-sided water washing booth 1 so as to face the falling wall 7. Immediately before and after the double-sided water-washing booth 1 along the traveling direction of the transfer line 22, a transfer device 26 having a gripping or placing part for the article 20 to be reciprocated in a direction perpendicular to the transfer line 22 is installed, respectively. The object to be coated 20 is taken out from the transfer line 22,
Along the rail, the double-sided washing booth 1 is moved to a coating position between the downflow wall 7 and the spray gun 25, and is returned to the transfer line 22. If necessary, it is possible to provide a device for rotating the object to be coated 20 around the central axis at the coating position. Further, a preheating furnace 27 for the object to be coated 20 is provided on one rotary shaft 21 side of the transfer line 22, a top coat paint drying oven 28 is provided on the other rotary shaft 21 side, and a transfer line facing the double-sided water washing booth 1. An undercoat paint drying oven 29 is installed in the straight section of 22.

[Action]

Next, the coating operation by the spray coating device of FIG. 2 will be described. The object 20 to be coated is sequentially supplied to the transfer line 22 by the supply hand 23 and heated in the preheating furnace 27, and then the object 20 to be coated is moved to the front of one spray gun 25 by the first transfer device 26 to apply the paint. To undercoat. The undercoated object 20 is returned to the transfer line 22 by the transfer device 26, dried in the drying oven 29, and then moved to the front of the other spray gun 25 in the next transfer device 26 to apply another paint. Top coat. The object 20 to be coated after top coating is the transfer device 26
Is returned to the transfer line 22, is dried in the drying furnace 28, and is collected as a product by the take-out hand 24. The above operations are successively performed on the plurality of objects to be coated 20 supported on the transfer line 22.

Thus, by using the double-sided water washing booth 1 of the present invention, it is possible to apply the paint from the two spray guns 25 at the same time in the single double-sided water washing booth 1. That is, the paint sprayed from the two spray guns 25 at the same time or separately is applied to the object to be coated 20, but a part of the paint which is not applied is opened 19 on both sides as shown by an arrow in FIG. Is absorbed by the water flowing down the two downflow walls 7 through the
It is discharged from 16 exhaust ports 17, and one double-sided water washing booth 1 can process paint from two spray guns.

Further, in a spray coating apparatus equipped with a transfer device, by using the double-sided water-washing booth 1 of the present invention, two spray guns 25 can be installed in one double-sided water-washing booth 1, so that the dead space around is reduced, and Transport line 22
Is moved away from the spray gun, so paint is
It will not adhere to.

[Effect of device]

According to the double-sided water-washing booth of the present invention, since the double-sided water-washing booth, which is half the number of spray guns, may be installed, the installation cost and the installation area can be reduced to almost half of the conventional one.

Also, in a continuous spray coating device using a transfer device, the dead space can be reduced by installing a double-sided water washing booth, and the factory space can be effectively used, and the paint can be prevented from adhering to the transfer line. So
Efficient coating can be performed without stopping the transfer line for removing the paint.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a concrete example of a double-sided water washing booth according to the present invention, and FIG. 2 is a schematic plan view of a spray coating apparatus equipped with the double-sided water washing booth and a transfer device of FIG. 1 ... Double-sided water washing booth, 2 ... Stand 3 ... Partition wall, 4 ... Bottom part 5 ... Partition plate, 6 ... Support stand 7 ... Downflow wall, 8 ... Water storage part 9 ... Water pump, 10 ... Pumping pipe 11 ... Water tank, 12 … Water supply pipe 13… Water injection pipe part, 14… Drain port 15… Strainer, 16… Ceiling part 17… Exhaust port, 18… Exhaust fan 19… Opening part, 20… Coated product 21… Rotating shaft, 22… Transfer line 23 … Supply hand, 24… Eject hand 25… Spray gun, 26… Transfer device 27… Preheating furnace, 28,29… Drying furnace

Claims (2)

[Scope of utility model registration request] 1. A partition wall provided on a pedestal so as to be opposed to each other, and two partition walls erected on the pedestal with their back surfaces facing each other in a direction perpendicular to the partition wall between the two partition walls. Downflow walls, a water supply device for the downflow wall surfaces provided along the upper edge of each downflow wall surface, and an exhaust port provided in the ceiling part that covers between the two partition walls above the downflow walls. A double-sided water-washing booth that is equipped with. 2. A double-sided washing booth according to claim 1, two spray guns installed facing the downflow wall of the double-sided washing booth, and at least a part of the transfer line orthogonal to the downflow wall of the double-sided washing booth. And a conveying device for the article to be coated,
A spray coating apparatus comprising: two transfer devices that take out an object to be coated from the transfer line and reciprocate between a falling wall of a double-sided water washing booth and a spray gun.