KR102115577B1 - Color powder coating apparatus - Google Patents

Abstract

The present invention relates to a high-quality powder coating device which includes: a coating booth (100) in which a powder coating is performed on an object (M) to be coated, and which has a conveyor rail (110) installed on the upper side to transfer the object (M) to be coated; a plurality of spray nozzles (200) for spraying the powder coating to the object (M) to be coated; a lifting unit (300) that elevates a plurality of spray nozzles (200) at the same time to coat the entire object (M) to be coated; a conveying air flow forming unit (400) installed on the spray nozzle (200) to form an air flow for conveying the powder coating to the object (M) to be coated; and an air pump (500) for supplying air to the conveying air flow forming unit (400).

Description

High quality powder coating apparatus {Color powder coating apparatus}

The present invention relates to a powder coating device, and more particularly, to a high-quality powder coating device capable of coating a high-quality powder coating a variety of shapes.

In general, powder coating, which is mainly used when painting the surface of metal, is electrically attached by spraying (-) electrically charged powder coating with (+) voltage applied to the surface of the object to be coated, and then electrically attaching it. The paint is heated, dissolved, and cured to coat it. Since such powder coating does not use a solvent, there is no risk of poisoning or fire by the solvent, and has the advantage of being able to form a durable coating film.

Usually, the powder coating apparatus places a spray nozzle for spraying the powder coating onto the side of the coating booth where the coating material is located, and sprays the powder coating while elevating the spray nozzle to paint a large coating. At this time, the powder coating that is not used for painting the object to be coated is collected and recovered and used again.

In the powder coating apparatus, since the powder coating has a constant diffusion angle when sprayed from the spray nozzle, when the distance between the spray nozzle and the coating object is long, the amount of the powder coating attached to the coating material is significantly reduced The thickness of the coating layer becomes thin. Conversely, when the distance between the spray nozzle and the object to be coated is close, an excessive amount of powder coating material is attached to the object to be coated, and accordingly, the thickness of the coating layer is relatively thick. That is, when the size of the object to be coated is increased or decreased, the distance between the objects to be coated becomes smaller or farther based on the spray nozzle, so the thickness of the coating layer was not constant according to the size of the object to be coated.

In addition, when the shape of the object to be coated is irregular, the distance between a specific portion of the object to be coated and the spray nozzle is rapidly changed, so that the degree of adhesion of the powder coating to be diffused and sprayed is not constant, and the thickness of the coating layer is not constant. In this case, in order to realize a coating layer having a sufficient thickness, the powder coating must be repeatedly sprayed while raising and lowering the spray nozzle. In this process, a lot of time is consumed and at the same time, the powder coating is consumed more than necessary, resulting in reduced work efficiency.

The present invention was created to solve the above problems, and even if the distance varies based on the extension line of the spray nozzle as the size of the object to be coated becomes large or small, the powder coating material can be effectively attached to the object to be coated. It is an object to provide a high quality powder coating device.

Another object of the present invention, by rapidly varying the diffusion angle of the powder coating material sprayed in a specific direction can increase or decrease the conveyance distance of the powder coating material at a specific angle, whereby the protruding part and the immersed part are irregularly formed. An object of the present invention is to provide a high-quality powder coating device capable of forming a coating layer having a constant thickness in the case of an irregular coating object.

In order to achieve the above object, the high-quality powder coating device according to the present invention, as a place where the powder coating operation of the object to be coated (M) proceeds, the conveyor rail for conveying the object (M) to the upper side Paint booth 100 is installed 110; A plurality of spray nozzles 200 for spraying powder coating with the object M; An elevation unit 300 for simultaneously elevating the plurality of spray nozzles 200 to paint the entire object M; A conveying air flow forming part 400 installed on the spray nozzle 200 to form an air flow for conveying the powder coating material to the object M; An air pump 500 for supplying air to the conveying air flow forming unit 400; And a photographing unit 600 installed in the conveying air flow forming unit 400 and photographing a coating state to be coated on the object M to generate image information; including the photographing unit 600 , The conductor box 610 installed on the upper side of the conveying air flow forming unit 400, the window 620 coated with a transparent conductive film as being installed on the conductor box 610, and the conductor box ( Built in 610, a camera 630 for photographing the object M through the window 620, and a repulsive static electricity applying unit for applying a repulsive static electricity of the same polarity as the powder coating to the conductor box 610 It characterized in that it comprises (640).

In the present invention, the conveying air flow forming unit 400, a plurality of flow paths 410, the flow path 410a through which the air supplied from the air pump 500 is formed, and the flow path 410 By being spaced apart from the outer circumferential surface of the injection nozzle 200, the tubular blower 420 forming a conveying air flow for conveying the powder nozzle injected from the injection nozzle 200 to the object M ).

In the present invention, the conveying air flow forming unit 400, the tubular body 421 and spaced apart from the outer peripheral surface of the injection nozzle 200 by the plurality of flow path bridge 410, the tubular body ( 421) an outer tubular wing 422 extending outwardly forward, a branched circular wing 423 branching obliquely to the rear side of the outer tubular wing 422, and extending inwardly forward of the tubular body 421 As an inner circular wing 424 extending apart from the branched circular wing 423, a circular protrusion 425 protruding toward the inner circular wing from the tip of the outer tubular wing 422, and the branched circular wing 423 ) And a ring space 426 communicating with the flow path 410a inside the tubular body 421 by the inner circular wing 424.

In the present invention, the euro bridge 410, the first, second, third, and four euro bridges 411, 412, 413, 414 are installed symmetrically on the outer circumferential surface of the injection nozzle 200 and; The tubular blower 420 is formed in the ring space 426 and forms an independent space communicating with the first, second, third, and four euro bridges 411, 412, 413, 414. It is installed on 1,2,3,4 division walls 427a, 427b, 427c, 427d and the first, 2, 3, and 4 Eurobridges 411, 412, 413, 414. And first, second, third, and fourth sole valves 428a, 418b, 418c, and 418d that selectively open and close the flow path 410a.

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According to the present invention, by adopting a conveying air flow forming unit for conveying the powder coating to a long distance, even if the distance between the spray nozzle and the object to be coated (M) changes as the object to be coated (M) becomes larger or smaller The required amount of powder coating can be conveyed and attached to the object to be coated (M), and accordingly, a constant coating layer can be realized regardless of the size of the object to be coated (M).

In addition, the first, second, third, and fourth partition walls in which the euro bridge includes first, second, third, and four euro bridges symmetrically installed on the outer circumferential surface of the spray nozzle, and the tubular blowing section divides the ring space into independent spaces, and The first, second, third, and fourth brush valves that selectively open and close the flow paths of the first, second, third, and fourth flow bridges rapidly change the diffusion angle of the powder coating sprayed in the up, down, left, and right directions, and simultaneously powder The conveying distance of the paint can be increased or decreased, and accordingly, even in the case of an irregular coating (M) in which the protruding portion and the immersed portion are irregularly formed, a coating layer having a constant thickness can be formed, thereby enabling high quality powder coating. It has the effect of being able to do it.

1 is a view for explaining the overall configuration of a high-quality powder coating apparatus according to the present invention,
Figure 2 is a view showing an excerpt of the air flow forming part of Figure 1,
3 is a partial cross-sectional view taken along line III-III 'of FIG. 2,
Figure 4 is a view of the conveying air flow forming part of Figure 2 from the front,
5 is a view for explaining the operation of the conveying air flow forming unit of Figure 3,
6 is a view for explaining that the conveying air flow forming part of FIG. 5 partially conveys the powder coating material sprayed from the spray nozzle;
7 is a view for explaining the configuration of a photographing unit installed in the conveying air flow forming unit of FIG. 2;

Hereinafter, a high-quality powder coating apparatus according to the present invention will be described in detail with reference to the accompanying drawings.

Hereinafter, what is described as "upper" or "upper" may include not only that which is directly above in contact, but also that which is above in a non-contact manner. Terms such as first and second may be used to describe various components, but components should not be limited by terms. The terms are only used to distinguish one component from other components. Singular expressions include plural expressions unless the context clearly indicates otherwise. Also, when a part “includes” a certain component, this means that other components may be further included, rather than excluding other components, unless otherwise specified. In addition, terms such as "... unit" and "module" described in the specification mean a unit that processes at least one function or operation.

1 is a view for explaining the overall configuration of a high-quality powder coating apparatus according to the present invention, FIG. 2 is a view showing the transfer air flow forming part of FIG. 1, and FIG. 3 is a line III-III 'of FIG. 2 It is a partial sectional view to follow, and FIG. 4 is a view seen from the front of the conveying air flow forming part of FIG. 2. In addition, FIG. 5 is a view for explaining the operation of the conveying air flow forming unit of FIG. 3, and FIG. 6 is a view for explaining partially conveying the powder coating material sprayed from the spray nozzle . And FIG. 7 is a view for explaining the configuration of the photographing unit installed in the conveying air flow forming unit of FIG. 2.

As shown, the high-quality powder coating apparatus according to the present invention, where the powder coating operation of the object to be coated (M) proceeds, the conveyor rail 110 for transferring the object to be coated (M) is installed on the upper side And the coating booth 100; A plurality of spraying powder coatings with the object to be coated M, in this embodiment, two spray nozzles 200; A lifting unit 300 for elevating a plurality of spray nozzles 200 at the same time to paint the entire object M; A transport air flow forming unit 400 installed on the spray nozzle 200 to form an air flow for conveying the powder coating material to the object M; An air pump 500 for supplying air to the conveying air flow forming unit 400; A photographing unit 600 installed in the conveying air flow forming unit 400 and photographing a coating state to be coated on the object M to generate image information; A dust collection unit 700 which is connected to the coating booth 100 to collect and collect powder coatings that are not used for painting the object M; It includes a paint supply unit 800 for storing the powder coating collected in the dust collection and recovery unit 700, and supplies the stored spray nozzle to the spray nozzle 200.

The coating booth 100 forms a separate environment from the outside, and a conveyor rail 110 is installed on the upper side to automatically transfer the object M transferred through the inlet of the coating booth to the outlet side. A plurality of wire rings 111 to be transported is installed on the conveyor rail 110, and the inside of the coating booth 100 is moved in a state in which the object M to be coated is hooked to the wire rings 111, and Powder coating proceeds. At this time, static electricity, for example, + static electricity of the electrode is applied to the object M to be coated through the wire ring 111, so that the powder coating material, which will be described later, can be electrically adsorbed.

The coating booth 100 is connected to the dust collection unit 700, and the closed space so that the powder coating not used for the painting of the object M can be collected and recovered by the dust collection unit 700. To form.

The spray nozzle 200 is supported by the lifting bracket 330 of the lifting part 300, which will be described later, and is lifted from the inside of the painting booth 100, and is supplied from the coating material supply part 800 through the coating material supply hose 810. The powder coating is sprayed onto the object to be coated (M). The spray nozzle 200 is sprayed while diffusing the powder coating (P) supplied from the paint supply unit 800, wherein the powder coating (P) sprayed has a-polarity of static electricity, so + M). Since the specific configuration and operation of the injection nozzle 200 is a general technique in the art, further detailed description is omitted.

As shown in FIG. 1, the lifting unit 300 lifts the plurality of spray nozzles 200 at the same time, so that the powder coating material is uniformly sprayed on the object M to be coated. The lifting unit 300, as the lifting unit body 310 supported on the ground, the lifting rail 320 installed in the vertical direction to the lifting unit body 310, and the lifting rail 320 as above It includes a lifting bracket 330 for supporting the injection nozzle 200. A gear and a driving motor (not shown) are built in the lifting unit body 310 to operate the lifting bracket 330 up and down.

The conveying air flow forming unit 400 conveys powder conveyed from the spray nozzle 200 from the air supplied through the air supply hose 510 of the air pump 500 to the object to be coated M Air flow is formed. As illustrated in FIG. 3, the conveying air flow forming unit 400 includes a plurality of flow paths 410 and flow paths 410 through which flow paths 410a through which air supplied from the air pump 500 flows are formed. ) By being spaced apart from the outer circumferential surface of the injection nozzle 200, a tubular blower 420 that forms a conveying air flow for conveying the powder nozzle injected from the injection nozzle 200 to the object to be coated M It includes.

As shown in FIG. 3, the tubular blowing unit 420 includes a tubular body 421 and a tubular body 421 supported apart from the outer circumferential surface of the injection nozzle 200 by a plurality of flow path bridges 410. The outer tubular wing 422 extending outwardly forward, the branched circular wing 423 branched obliquely to the rear side of the outer tubular wing 422, and the branched circular wing extending outwardly inside the tubular body 421 ( 423) and the inner circular wing 424 extending apart and protruding from the tip of the outer tubular wing 422 to the inner circular wing 425, the branch circular wing 423 and the inner circular wing 424 By the inside of the tubular body 421 includes a ring space 426 communicating with the flow path (410a).

By this structure, as shown in FIG. 5, the high-pressure air flowing through the air supply hose 510 flows into the ring space 426 and then between the branched circular blade 423 and the inner circular blade 424. Faster as it passes through the nozzle narrowed at an angle, and then is jetted at high speed while forming a cylindrical shape toward the front side of the tubular body 421 while passing through the circular projection 425 inside the outer tubular wing 422.

At this time, the cylindrical body 421 by the air in the form of a cylinder that is injected at a high speed toward the front side, a negative pressure is formed in accordance with the Bernoulli principle in the inner space of the tubular body 421, and this sound pressure is the air outside the rear side of the tubular body 421 Is attracted to the inside of the tubular body 421, and then combined with the air injected at a high speed toward the front side of the tubular body 421 to form an air flow forming a cylindrical shape. The air flow carries the powder coating material (P) sprayed from the spray nozzle (200) to the far-off object (M).

On the other hand, the euro bridge 410, as shown in Figure 4, the first, second, third, and four Euro bridges 411, 412, 413, 414 (414) symmetrically installed on the outer circumferential surface of the injection nozzle 200 ).

In addition, the tubular air blowing unit 420 is formed in the ring space 426, the first, second, third, and fourth euro bridges 411, 412, 413, 414 to form an independent space communicating with the first, 2,3,4 division walls 427a, 427b, 427c, 427d, and 1, 2, 3, 4 euro bridges 411, 412, 413, 414 are installed in the corresponding flow path 410a ). First, second, third, and fourth sole valves 428a, 418b, 418c, and 418d are selectively opened and closed.

By this structure, the air supplied through the air supply hose 510 by the opening and closing operation of the first, second, third, and fourth sole valves 428a, 418b, 418c, and 418d is the first, second, and third , 4 compartment walls (427a) (427b) (427c) (427d) is selectively supplied or blocked by the divided ring space 426, and accordingly, air is injected through the specific ring space defined.

For example, as illustrated in FIG. 6, the first sole valve 428a opens the flow passage 410a of the first flow bridge 411, and the second, third and fourth sole valves 418b and 418c When (418d) closes the flow paths of the first, second, and three euro bridges 412, 413, and 414, air supplied through the air supply hose 510 and the first partition wall 427a of FIG. After flowing into the ring space between the fourth partition walls 427d and spraying at a high speed, a part of the powder coating material diffused from the spray nozzle 200 is loaded and transported to a long distance. That is, only a part of the powder coating sprayed from the spray nozzle 200 is transported to a relatively long distance.

As illustrated in FIG. 7, the photographing unit 600 includes a conductor box 610 installed on the upper side of the conveying air flow forming unit 400 and a transparent conductive film (which is installed on the conductor box 610). 621) is coated on the window 620, the conductor box 610 is built in the camera 630 to take the object (M) through the window 620, and the conductor box 610 powder coating And a repulsive static electricity applying unit 640 for applying a repulsive static electricity of the same polarity.

The photographing unit 600 photographs a state in which the object M is painted on the front side to generate an image signal, and the image signal is transmitted in real time through an external monitor so that the worker is properly coated with powder. You can check whether there is.

At this time, the repulsive electrostatic application unit 640 generates the static electricity of the pole on the transparent conductive film 621 coated on the window 620, and accordingly-the powder coating having the pole is the window 620 by the electric repulsive force. It is not attached to, and accordingly, the camber 630 may photograph the front through the window 620.

As described above, according to the present invention, by adopting the conveying air flow forming unit 400 for conveying the powder coating to a long distance, as the size of the object to be coated M becomes larger or smaller, the spray nozzle 200 and the blood are avoided. Even if the distance between the coatings (M) varies, the required amount of powder coating can be conveyed and attached to the coating (M), and accordingly, a constant coating layer can be implemented regardless of the size of the coating (M). have.

In addition, the Eurobridge 410 includes first, second, third, and four Eurobridges 411, 412, 413, 414 that are symmetrically installed on the outer circumferential surface of the injection nozzle 200, and The first, second, third, and fourth partition walls 427a, 427b, 427c, 427d and 1,2,3,4 Eurobridge 411 where 420 partitions the ring space 426 into independent spaces. Including the first, second, third, and fourth sole valves 428a, 418b, 418c, and 418d that selectively open and close the flow paths 410a of the 412, 413, and 414, spraying in the up, down, left, and right directions It is possible to rapidly change the diffusion angle of the powder coating to be made, and at the same time, to increase or decrease the conveying distance of the powder coating. Accordingly, even in the case of an irregular coated object where the protruding portion and the immersed portion are irregularly formed, a coating layer having a constant thickness can be formed, thereby enabling high-quality powder coating.

The present invention has been described with reference to one embodiment shown in the drawings, but this is only exemplary, and those skilled in the art will understand that various modifications and other equivalent embodiments are possible therefrom.

100 ... coating booth 110 ... conveyor rail
200 ... Spray nozzle 300 ... Elevator
310 ... elevating body 320 ... elevating rail
330 ... elevating bracket 400 ... conveying air flow forming part
410 ... Eurobridge 410a ... Euro
411, 412, 413, 414 ... Euro 1,2,3,4
421 ... tubular body 422 ... outer tubular wing
423 ... divergent circular wing 424 ... inner circular wing
425 ... Round protrusion 426 ... Ring space
427a, 427b, 427c, 427d ... 1st, 2nd, 3rd, 4th division wall
428a, 428b, 428c, 428d ... 1st, 2nd, 3rd, 4th Solve valve
500 ... air pump 510 ... air supply hose
600 ... filming unit 610 ... conductor box
620 ... Windows 621 ... transparent electrode
630 ... Camera 640 ... Repulsive static electricity
700 ... Dust collection unit 800 ... Paint supply unit
810 ... paint supply hose

Claims (6)

A coating booth 100 in which a powder coating of an object M is carried out, and a conveyor rail 110 for transferring the object M is installed on an upper side;
A plurality of spray nozzles 200 for spraying powder coating with the object M;
An elevation unit 300 for simultaneously elevating the plurality of spray nozzles 200 to paint the entire object M;
A conveying air flow forming part 400 which is installed on the spray nozzle 200 to form an air flow for conveying the powder coating material to the object M;
An air pump 500 for supplying air to the conveying air flow forming unit 400; And
Includes; photographing unit 600 that is installed in the conveying air flow forming unit 400 to photograph the state to be painted on the object to be coated (M) to generate image information;
The photographing unit 600 includes a conductor box 610 installed on an upper side of the conveying air flow forming unit 400, and a window 620 coated with a transparent conductive film as being installed on the conductor box 610. Wow, the camera 630 is built in the conductor box 610 to take a picture of the object M through the window 620, and the conductive box 610 is a repulsive static electricity of the same polarity as the powder coating High-quality powder coating apparatus, characterized in that it comprises a repulsive electrostatic applying unit 640 for applying. The method of claim 1, wherein the transport air flow forming unit 400,
A plurality of flow paths 410 are formed with a flow path 410a through which air supplied from the air pump 500 flows,
Formed as a carrier air flow for conveying the powder nozzle injected from the injection nozzle 200 to the object to be coated (M) as being supported away from the outer circumferential surface of the injection nozzle 200 by the flow path 410 High-quality powder coating device, characterized in that it comprises a tubular blower 420. The method of claim 2, wherein the carrier air flow forming unit 400,
And the tubular body 421 is supported to be spaced apart from the outer circumferential surface of the injection nozzle 200 by the plurality of flow path bridge 410,
An outer tubular wing 422 extending outwardly forward of the tubular body 421,
A branch circular wing 423 branched obliquely to the rear side of the outer tubular wing 422,
An inner circular wing 424 extending apart from the branched circular wing 423 as extending forwardly inside the tubular body 421;
A circular protrusion 425 protruding from the front end of the outer tubular wing 422 toward the inner circular wing;
High-quality powder coating apparatus characterized in that it comprises a ring space (426) in communication with the flow path (410a) inside the tubular body (421) by the branch circular blade (423) and the inner circular blade (424). According to claim 3,
The euro bridge 410 includes first, second, third, and four euro bridges 411, 412, 413, and 414 symmetrically installed on the outer circumferential surface of the injection nozzle 200;
The tubular blower 420 is formed in the ring space 426 and forms an independent space communicating with the first, second, third, and four euro bridges 411, 412, 413, 414. It is installed on 1,2,3,4 division walls 427a, 427b, 427c, 427d and the first, 2, 3, and 4 Eurobridges 411, 412, 413, 414. A high-quality powder coating apparatus comprising first, second, third, and fourth sole valves 428a, 418b, 418c, 418d that selectively open and close the flow path 410a. delete delete

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