JP2003117451A - Coating material recovery system for spray coating machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a coating material recovery system for a spray coating machine capable of recovering the coating material sprayed on a region other than a panel to be coated to reutilize the same in spray coating. SOLUTION: The coating material recovery system 10 for the spray coating machine is equipped with a spray coating mechanism 11 equipped with a chain conveyor 110 and a spray gun 111 for spraying the coating material above the chain conveyor 110, the sidewalls 12 provided so as to approach both sides of the chain conveyor 110, a recovery tank 14 for recovering the coating material adhering to the sidewalls 12 and a re-supply pump 15 for re-supplying the coating material recovered in the recovery tank 14 to the spray gun 111.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a spray coating machine paint recovery system capable of recovering wasted paint that is scattered around the periphery when spraying an outer wall panel or the like.

[0002]

2. Description of the Related Art Conventionally, in a coating process in manufacturing an outer wall panel of a building or the like, a spray coating machine has been used for spraying a paint onto a panel to be coated such as an outer wall panel for coating. FIG. 6 is a schematic diagram showing the operation of the spray coating machine 90. The spray coating machine 90 is a chain conveyor 92 that moves a panel 91 to be coated such as an outer wall panel.
A plurality of spray guns 93 arranged in a line in the moving direction of the chain conveyor 92 on the upper part of the chain conveyor 92, a spray gun moving mechanism 94 for moving the spray guns 93 in alignment, It comprises a coater frame 95 for supporting these.

In the spray coating machine 90, a panel 91 to be coated is placed on the chain conveyor 92 so that the upper surface thereof becomes a coating surface, and a drive source (not shown) drives the chain conveyor 92 to move it to the left. Transport. On the other hand, the spray guns 93 lined up in the upper part are aligned by the spray gun moving mechanism 94, and the chain conveyor 9
The paint is supplied from a paint supply source (not shown) while being reciprocally moved in the front-rear direction (front direction and depth direction) orthogonal to the conveyance direction of 2, and is directed toward the panel 91 to be coated, as shown by a virtual line in the figure. Paint by spraying paint downward. At this time, the chain conveyor 9 that conveys the panel 91 to be coated
By appropriately controlling the leftward conveyance speed of 2 and the reciprocating movement speed of the spray gun 93 in the front-rear direction, desired coating can be performed on the surface of the panel 91 to be coated.

However, since the spray coating machine 90 has a structure in which the paint is sprayed from above, the spray gun 93 does not entirely reach the panel 91 to be painted.
A part of the paint will spread around the periphery of the spray coater 90. Further, there is some paint that has reached the side surface or the like of the panel 91 to be coated and is not fixed to the panel 90 to be coated, but is dripped downward. Conventionally, these are nylon curtains or the like for shielding, and by shielding the installation place of the spray coating machine 90 from others, the diffusion to others is prevented, but they are not collected but discarded. In spray painting, due to the nature of spraying the paint over a wide area for uniform coating, the amount of paint that is discarded by being sprayed outside the panel to be painted is greater than the amount of paint that settles on the panel to be painted, which is a great waste. Was occurring. This waste is eliminated, and the paint sprayed on the outside of the panel to be painted in the spray painting machine or the paint that does not fix to the panel to be painted and is dropped is reused.
It is required to reduce the cost in the painting process.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and provides a system capable of recovering and reusing paint sprayed on the outside of a panel to be painted in spray painting. With the goal.

[0006]

In order to attain the object of the preceding paragraph, a spray coating machine paint recovery system according to claim 1 is a conveyor for carrying a panel to be painted, an upper part of the conveyor, and a direction orthogonal to the carrying direction. Spraying mechanism including a spray gun that sprays paint while reciprocating in the direction, and side walls provided so as to be close to both sides of the conveyor by inclining at a required angle such that their lower parts approach each other. And a recovery tank for recovering the coating material adhering to the side wall, and a re-supply pump for re-supplying the coating material recovered in the recovery tank to the spray gun.

A spray coating machine paint recovery system according to a second aspect of the present invention is the spray coating machine paint recovery system according to the first aspect, wherein the side wall is inclined downward from both side ends toward the center toward the lower end of the flat plate-shaped recovery surface. The recovery groove is formed by forming the recovery groove, and a drop hole that cuts out the recovery groove is formed in the vicinity of the intersection of the slopes of the recovery groove.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings showing the embodiments thereof. 1 and 2 are a front view and a top view of a spray coating machine paint recovery system 10 according to an embodiment of the present invention, respectively. As shown in the figure, a spray coating machine paint recovery system 10 includes a chain conveyor (conveyor) 110 that conveys a panel 20 to be coated such as an outer wall panel for coating, and the chain conveyor 1
Spray coating mechanism 11 having a spray gun 111 for spraying paint on the upper part of 10, and the chain conveyor 11
0, a side wall 12 provided adjacent to both sides of the 0, a recovery tank 14 provided below the side wall 12 for recovering the coating material adhered to the side wall 12 through a recovery gutter 13, and a recovery tank 14 A re-supply pump 15 for re-supplying the sprayed paint to the spray gun 111. In the figure, the panel 20 to be coated is shown by a virtual line for the sake of convenience.

As shown in the figure, the chain conveyor 110 rotates from the panel 20 to be coated and rotates to transport the panel 20 to be coated, and a conveyor frame 114 rotatably supporting the chain. When the drive chain (not shown) rotates the transport chain 113, the panel 20 to be coated is transported in the front-rear direction (front direction and depth direction) in FIG. The chain conveyor 110 is a spray coating machine paint recovery system 1
It is supported by a frame (not shown) of 0 and is supported at a required position.

A plurality of the spray guns 111 are arranged in a row on a spray gun support member 115 above the chain conveyor 110. The spray gun support members 115 are formed from a chain rotatably supported. According to the rotation of the chain, the spray gun moving machine 112 can reciprocate in the direction orthogonal to the carrying direction of the chain conveyor 110 (the left-right direction in FIG. 1). Thereby, the spray gun moving device 1
12 are driven by a drive source (not shown) to form spray guns 111 arranged on the spray gun support member 115.
Are integrally reciprocated in a direction orthogonal to the carrying direction of the chain conveyor 110. At this time, each spray gun 111 is supplied with paint from a paint supply source (not shown), and sprays this paint toward the panel 20 to be painted placed on the chain conveyor 110. The spray gun 111, the spray gun moving machine 112,
The spray gun support member 115 is supported by a frame (not shown) of the spray coating machine paint recovery system 10 and is supported at a desired position above the chain conveyor 110.

The chain conveyor 110, the spray gun 111, the spray gun moving machine 112 for reciprocating the spray gun 111, the spray gun supporting member 115, the drive source for driving the chain conveyor 110 (not shown), and the spray gun moving machine 112 are driven. The spray coating mechanism 11 is composed of a drive source for controlling the coating material, a coating material supply source, and a frame that supports these devices. The configuration of the spray coating mechanism 11 is not limited to this, and instead of the chain conveyor 110 described above, the panel 20 may be transported by a conveyor such as a roller conveyor or a belt conveyor. Multiple spray guns 11
1 is arranged to move, but it is also possible to move each spray gun 111 independently.
Further, the spray gun 111 may be provided in a plurality of rows.

3 (a) to 3 (d) are a front view, a top view, a side view and a sectional view taken along the line AA of the side wall 12, respectively. As shown in the figure, the side wall 12 is a flat plate. -Shaped plate member 120 having a substantially rectangular shape, a “L” -shaped recovery groove portion 121 formed at the lower end thereof and inclined downward from both ends toward the center, and a recovery groove part 121 at the upper end. Collection groove 1
21 includes a mounting portion 123 provided so as to bend and project in a direction opposite to the projecting direction, and a part of the recovery groove portion 121 is cut out in the vicinity of the intersection of the inclinations from both ends of the recovery groove portion 121. A drip hole 122 is provided. The side wall 12 is inclined at a predetermined angle so as to be close to both sides of the chain conveyor 110, and the mounting portion 123 is provided on the upper end side of the spray coating machine paint recovery system 10.
It is fixed to the column 16 via a support assisting member 17A, and the lower end side is fixed to the spray coating mechanism 11 by a support assisting member 17B. The required angle is defined by the sidewalls 12 provided on both sides of the chain conveyor 110.
However, the inclination is such that they are closer to each other below the upper side, and the side on which the recovery groove portion 121 is formed is the upper surface so that the paint adhered on the recovery surface 120 naturally flows down toward the recovery groove portion 121. To be done.

The side wall 12 shown in FIG. 3 is the side wall 12 provided on the left side surface of the spray coating mechanism 11 in FIGS. 1 and 2, and the side wall 12 provided on the right side surface is
What is symmetrical to that shown in FIG. 3 is used. Further, the side wall 12 is not limited to the above-mentioned shape, and the recovery surface portion 120 may be a curved surface or the recovery groove portion 121 may be in a “V” shape or a “U” shape, and the adhered coating material may be used. Any shape may be used as long as it can be concentrated at one or a plurality of required points and flow down naturally.

4 (a) to 4 (c) are a front view, a top view, and a sectional view taken along the line BB, respectively, showing the recovery gutter 13. As shown in FIG. As shown in the drawing, the recovery gutter 13 is a linear member having an M-shaped cross section, and the central groove of the M-shaped is directed upward, so that the lower end is at a desired position below the side wall 12. The side is fixed to the floor surface by the support auxiliary member 18A, and the upper end side is inclined and fixed to the spray coating mechanism 11 by the support auxiliary member 18B. The required position is set such that the upper portion thereof passes directly under both the dropping holes 122 of the side walls 12 and the lower end portion thereof is directly above the recovery tank 14, so that the dropping holes of the side walls 12 are formed. The M-shaped portion can receive the paint that has naturally flowed down from 122 and guide it to the recovery tank 14. The recovery gutter 13 may be configured by using a member having a “U” shape, a “V” shape, or other groove-shaped cross-sectional shape instead of the above-described shape, and each drip hole. 1
The shape is not limited to a linear shape as long as it can be positioned immediately below 22 and immediately above the recovery tank 14.

The recovery tank 14 is a tank for recovering paint whose upper end surface has an opening, and temporarily stores the paint adhered to the side wall 12 through the recovery gutter 13. The paint stored in the recovery tank 14 is re-supplied to the spray gun 111 of the spray coating mechanism 11 through the re-supply pump 15 connected to the recovery tank 14 and reused for coating a new panel 20 to be coated. It will be.

Next, the operation of the spray coating machine paint recovery system 10 configured as described above will be described with reference to FIG. FIG. 5 shows the spray coating machine paint recovery system 10 during the painting operation, in which the panel 20 to be painted is placed on the transport chain 113 of the chain conveyor 110 with the upper surface as the painting surface, and the spraying is performed. With the operation of the coating mechanism 11, the transport chain 113 rotates to transport the panel 20 to be coated in the front direction. on the other hand,
The spray gun 111 arranged in an upper part of the chain conveyor 110 is supplied with paint from a paint supply source (not shown) and sprays the paint downward. At this time, the spray gun moving machine 112 is driven by a drive source (not shown), and the spray guns 11 arranged on the spray gun support member 115 are lined up.
Move 1 left and right as a unit. By appropriately controlling these operations, that is, the conveying speed of the panel 20 to be coated to the front, the moving speed of the spray gun 111 to the left and right, and the amount of paint sprayed from the spray gun 111 are appropriately controlled. As a result, desired coating is applied to the surface of the panel 20 to be coated.

On the other hand, for example, the spray gun 1 shown in phantom lines
As when 11 is moved to the left end and sprayed paint,
The paint sprayed not only on the panel 20 to be painted but also on the outside of the panel 20 to be painted is provided so that the side walls 12 are close to both sides of the chain conveyor 110 and cover the spray painting mechanism 11. As shown in a partial enlargement C, the droplets adhere to the recovery surface 120 of the left side wall 12 as paint droplets. As shown by the arrow AR1, the adhered paint droplets naturally flow downward along with the inclination of the recovery surface 120 and flow into the recovery groove 121. Collection groove 1
21 has a downward slope from both ends toward the direction of the drip hole 122 (center direction) so that the drip hole 122 provided at a required position is the lowermost end, and therefore, the partial side view D of FIG. As indicated by an arrow AR2, the coating material that has flowed into the recovery groove portion 121 naturally flows down toward the drip hole 122 with the inclination. The drip hole 122 is a hole that cuts out the recovery groove portion 121, and the paint that has naturally flowed down to the drip hole 122 will drop as a paint drop from the drip hole 122 as indicated by arrow AR3.

Further, a recovery gutter 1 is provided directly below the dropping hole 122.
3 is provided with its M-shaped groove facing the upper surface, and the paint drop that has fallen from the drip hole 122 is received by this recovery gutter 13 and, as shown by arrow AR4, moves toward the lower end side with its inclination. It flows down naturally. Since the recovery tank 14 is provided immediately below the lower end side of the recovery gutter 13, the paint droplet reaching the lower end falls toward the recovery tank 14 as shown by an arrow AR5 and is recovered in the recovery tank 14. Will be. In this way, the paint that naturally flows down into the recovery tank 14 and is recovered is sprayed by the re-supply pump 15 provided in the recovery tank 14 into the spray gun 111 of the spray coating mechanism 11.
Can be re-supplied and reused, or can be stored in another tank and reused for painting a new panel 20 to be painted.

Similarly, the paint attached to the right side wall 12
It will be recovered in the recovery tank 14 through the same process. Further, the paint that has been sprayed onto the panel 20 to be coated but is not fixed to the surface of the panel 20 to be dripped downward from the panel 20 to be coated is provided such that the lower end side of the side wall 12 extends to the lower side of the panel 20 to be adhered. Therefore, the recovery surface 120 can be received, and the recovery tank 14 can be processed through the same process as described above.
Will be collected in. In the figure, for convenience of explanation,
Side wall of paint 1
Needless to say, when the amount of adhesion to 2 is large, the respective paint droplets are combined and spontaneously flowed down into the recovery tank 14 as a continuous fluid to be recovered.

As described above, in the spray coating machine paint recovery system 10 according to the present embodiment, the chain conveyor 110 for transporting the panel 20 to be coated and the upper portion of the chain conveyor 110 and orthogonal to the transport direction thereof. The spray painting mechanism 11 is provided with a spray gun 111 for spraying the paint while reciprocating in the direction, and is provided so as to be close to both sides of the chain conveyor 110. The side wall 12 provided on the side wall 12, a recovery tank 14 for recovering the paint adhering to the side wall 12, and a re-supply pump 15 for re-supplying the paint recovered in the recovery tank 14 to the spray gun 111. The paint sprayed on the outside of the coated panel 20 or the paint sprayed on the coated panel 20 but not fixed is recovered. It can be reused.

[0021]

The spray coating machine paint recovery system according to the first aspect of the invention sprays the paint while reciprocating on the conveyor for carrying the panel to be painted and on the upper part of the conveyor and in the direction orthogonal to the carrying direction. A spray coating mechanism provided with a spray gun, side walls provided so as to be close to both sides of the conveyor by inclining at a predetermined angle such that the lower parts thereof are close to each other, and paint adhered to the side walls are collected. Since it is characterized by comprising a recovery tank and a re-supply pump for re-supplying the paint recovered in the recovery tank to the spray gun, the paint sprayed on the outside of the panel to be painted or the panel sprayed on the panel to be painted Although the paint that has not settled can be collected and reused, it not only reduces the cost of the painting process, but also reduces waste and is effective for environmental protection.

A spray coating machine paint recovery system according to a second aspect is the spray coating machine paint recovery system according to the first aspect, wherein the side wall is inclined downward from both side ends toward the center toward the lower end of the flat plate-shaped recovery surface. Since the recovery groove is formed in the vicinity of the slope of the recovery groove and a dropping hole is formed in the vicinity of the intersection of the slopes of the recovery groove, the paint sprayed outside the panel to be coated is characterized. Also, since the paint that has been sprayed on the panel to be painted but has not fixed can be reliably received, these paints can be reliably collected and reused, and the cost in the painting process can be reduced. it can.

[Brief description of drawings]

FIG. 1 is a front view showing a spray coating machine paint recovery system according to an embodiment of the present invention.

FIG. 2 is a top view showing a spray coating machine paint recovery system according to an embodiment of the present invention.

FIG. 3 is a view showing a side wall.

FIG. 4 is a view showing a collection gutter.

FIG. 5 is a view showing an operation of the spray coating machine paint recovery system according to the embodiment of the present invention.

FIG. 6 is a schematic view showing the operation of a conventional spray coating machine.

[Explanation of symbols]

10 Spray coating machine Paint recovery system 11 Spray painting mechanism 110 Chain conveyor (conveyor) 111 spray gun 12 Side wall 120 collection surface 121 Collection groove 122 Drip hole 14 Collection tank 15 Resupply pump 20 Painted panel

Claims (2)

[Claims] 1. A spray coating mechanism comprising: a conveyor for transporting a panel to be coated; and a spray gun for spraying coating material on the upper portion of the conveyor while reciprocating in a direction orthogonal to the transport direction, and below the spray coating mechanism. The side walls provided so as to be close to each other so as to be close to each other on both sides of the conveyor, a recovery tank for recovering the paint adhering to the side walls, and the paint recovered in the recovery tank A paint recovery system for a spray coating machine, which comprises a resupply pump for resupplying the spray gun. 2. The recovery groove is formed at the lower end of a flat plate-shaped recovery surface by sloping downward from both ends toward the center in the side wall, and the recovery groove is provided near the intersection of the inclinations of the recovery groove. The spray coating machine paint recovery system according to claim 1, wherein a notch dropping hole is formed.