KR101594172B1

KR101594172B1 - Powder coating apparatus

Info

Publication number: KR101594172B1
Application number: KR1020150133434A
Authority: KR
Inventors: 문병정
Original assignee: 문병정
Priority date: 2015-09-21
Filing date: 2015-09-21
Publication date: 2016-02-15

Abstract

The objective of the present invention is to provide a powder painting device which performs an overall powder painting process efficiently to improve productivity. In order to accomplish the objective, the powder painting device according to the present invention comprises: a transfer device which includes a rail arranged in a closed-loop shape supported by a plurality of poles to be positioned thereon, a moving object which moves along the rail, a driving unit which drives the moving object, and a fixture which is extended to be perpendicular to the moving object; a loading unit which loads an object to be painted on the fixture; a preheating unit which includes a heater positioned on a floor and a blocking wall positioned at a side surface of the heater, wherein the object to be painted fixed on the fixture is transferred on top of the heater; a painting unit which includes a booth and a passing surface formed at a side surface of the booth, wherein the object to be painted fixed on the fixture is guided into and out of the painting unit through the passing surface; a drying unit which includes an inlet unit, a remaining unit extended from the inlet unit, and an in/out hole formed at one surface of the inlet unit, wherein the remaining unit is formed to be higher than the in/out hole, and the object to be painted, which is fixed on the fixture, is guided into the inlet unit, transferred to the remaining unit, turned by 180 degrees, transferred to the inlet unit again, and then discharged through the in/out hole; and an unloading unit which unloads the object to be painted which is fixed on the fixture. The transfer device is installed to circulate through the loading unit, the preheating unit, the painting unit, the drying unit, and the unloading unit.

Description

[0001] Powder coating apparatus [

The present invention relates to a powder coating apparatus, and relates to a powder coating apparatus that continuously performs drying after powder coating.

Case parts of industrial machines such as an elevator or a machine tool form a coating film for improving surface characteristics, and the coating film is mainly performed using a powder coating method.

Powder coatings used in this process are mostly electrostatic powder coatings, and this method has various advantages in that the powder is attracted to the objects by electrostatic attraction and melts by heating to form a coating film.

Such powder coating is applied to various products. For example, Japanese Patent No. 312797 discloses a transfer device for supplying and discharging an object to be painted in a painting booth, and a transfer device for forming a predetermined pattern on the front side of the object to be painted A spray nozzle disposed in front of the screen and configured to spray a powder coating material so that a pattern pattern formed on the screen is formed on a surface of an object to be coated; And a collecting mechanism arranged on the path of the screen for collecting the powder paint adhered to the screen.

In addition, in Japanese Patent No. 436685, a first circular plate having a size to be caught by a hole in the center of a cooling fan motor housing, a second circular plate having a size passing through the hole, and a second circular plate extending from the second circular plate to a predetermined length A cooling fan of a motor which revolves and revolves by using a jig made of a knob made only of a handle, and a coating powder is collected from the cooling fan motor housing while the jig is being conveyed to the heat treatment facility while the painted cooling fan motor housing is being conveyed A powder coating method using a painting jig is disclosed.

In addition, Japanese Patent No. 864684 discloses a coating material application unit for applying a powder coating material to the surface of an object to be coated by electrostatic induction action and a powder coating material application unit for applying high frequency to the object to which the powder coating material is applied and heating the powder coating material from the inside, Coagulating, and drying the powder coating apparatus.

The above patents have an advantage that powder coating can be performed in consideration of the characteristics of a product, but a drying process performed after powder coating is not specifically proposed. Particularly, the powder coating is one of the important factors in the powder coating itself. However, since the drying process to be performed later is also one of important processes for determining the overall productivity, a powder coating capable of performing a new drying process, We need a device.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned needs, and an object of the present invention is to provide a powder coating apparatus with high productivity by efficiently performing powder coating work.

To achieve the above object, the present invention provides a powder coating apparatus comprising: a rail disposed in a closed loop state supported by a plurality of columns at an upper end, a moving body moving along the rail, a driving unit driving the moving body, A transporting device including a fixture extending perpendicularly to the moving body; A loading unit for loading the object to be fixed to the fixture; A preheating unit including a heating unit positioned at the bottom and a blocking wall located at the side of the heating unit, the object fixed to the fixing unit being transferred to the upper end of the heating unit; A coating unit including a booth and a penetrating surface formed on a side surface of the booth, the coated object fixed to the fixture flowing in and out through the penetrating surface; And an inflow outlet formed on one surface of the inflow portion, wherein the retention portion is formed to have a height higher than the height of the inflow outflow port, A drying unit which is rotated 180 degrees after being transferred to the holding unit and then transferred to the inlet unit and discharged to the inlet / outlet unit; And an unloading unit for unloading the object fixed to the fixture, wherein the transfer device is installed to circulate the loading unit, the preheating unit, the coating unit, the drying unit, and the unloading unit.

Preferably, the transfer device further comprises a first switching unit for switching the conveying direction by 180 degrees between the loading unit and the preheating unit, and a third switching unit for switching the conveying direction by 180 degrees in the holding unit.

More preferably, the loading part and the preheating part are arranged horizontally, the coating part and the unloading part are arranged vertically, the inlet part of the drying part is arranged horizontally, the holding part of the drying part is vertically arranged, And a second switching unit for switching the transfer direction between the drying unit and the coating unit by 180 degrees.

More preferably, the conveying device is installed in an inclined form in the inflow portion of the drying unit.

More preferably, the upper end of the inflow outlet further comprises a discharge duct for discharging the heated gas discharged through the inflow outlet.

The powder coating apparatus according to the present invention is configured to transfer a product to be coated using a transfer device, wherein the transfer device is configured by sequentially circulating the product loading part, the preheating part, the coating part, the drying part and the unloading part, And the conveying device is reciprocated in the drying part to increase the residence time of the drying part of the product to make it coincide with the coating speed and the drying speed, Thereby providing an effect of efficiently performing the entire process.

1 is a process drawing of powder coating using the powder coating apparatus according to the present invention,
2 is a plan view of a powder coating apparatus according to the present invention,
Fig. 3 is a configuration diagram of the transfer device shown in Fig. 2,
Fig. 4 is a side view of the preheating portion shown in Fig. 2,
Fig. 5 is a configuration diagram of the coating unit shown in Fig. 2,
Fig. 6 is a configuration diagram of the drying unit shown in Fig. 2,
7 is a cross-sectional view of Fig.

Hereinafter, preferred embodiments according to the present invention will be described in detail with reference to the accompanying drawings.

The powder coating apparatus 100 according to the present invention is an apparatus for performing a powder coating process performed as shown in FIG.

The powder coating process includes a loading process S1, a preheating process S2, a coating process S3, a drying process S4, and an unloading process S5.

The loading step S1 refers to a process of unloading the object 1 to the transfer device 10, wherein the loading can be performed manually or automatically through a separate device.

The preheating step S2 is a preheating step for the coating step S3 of the object 1 to be heated to a predetermined temperature.

The coating step (S3) is a step of performing powder coating on the surface of the object 1 using powder, and the coating step is carried out by an electrostatic powder coating method and can proceed manually or automatically.

The drying step (S4) is a step of drying the coated object (1) which has been coated, and drying is performed at a constant temperature.

Finally, the unloading step S5 is a step of separating the object 1 to be dried with the transfer device 10, and finally the powder coating step is completed through the unloading step S5. The unloading step S5 is also implemented in an automatic manner through a manual or dedicated machine.

As shown in FIG. 2, the powder coating apparatus 100 according to the present invention includes a conveying device 10 for continuously conveying a closed loop through a rail formed at an upper end thereof, A loading unit 20 for fixing the object 1 to the fixture 11, a preheating unit 30 for preheating the object 1 to be coated, a preheating unit 30 for applying powder coating to the preheated object 1, A drying unit 50 for drying the coated object 1 to which the coating has been completed and an unloading unit 70 for unloading the dried object 1 to be dried.

3, the conveying apparatus 10 includes a rail 12 formed at an upper end thereof, a moving body 13 moving along the rail 12, and a driving unit 13 for driving the moving body 13 Unit 14 and a fastener 11 extending vertically to the moving body 13. [0031]

In addition, as shown in FIG. 2, the rail 12 is disposed along the entire area of the apparatus 100, and is configured in the form of a ferrule.

That is, the moving body 13 is configured in the form of a chain connected to each other, so that the moving body 13 is continuously transferred from the upper portion or the lower portion of the rail 12.

Meanwhile, the loading unit 20 is a space in which only the transfer device 10 is formed, and the worker manually attaches the workpiece 1 to the fixture 11 continuously.

Therefore, the fixture 11 having passed through the loading part 20 is coupled with the workpiece 1 at the lower end thereof.

The workpiece 1 that has passed through the loading unit 20 enters the preheating unit 30 through the first switching unit 81 which switches the direction of 180 degrees in the transfer device 10.

4, the preheating unit 30 is provided with a blocking wall 32 on the side of the heating device 31 located at the lower end and the side of the heating device 31, Is preheated through the heating device (31) located at the lower end while passing between the blocking walls (32).

The workpiece 1 passing through the preheating part 30 is reversed by 90 degrees and enters the painting part 40. [ As shown in FIG. 5, the coating unit 40 includes a booth 41 having a rectangular parallelepiped shape and a penetrating surface 42 for conveying the object 1 through the center of a side surface of the booth 41, .

That is, the object 1 is transferred through the penetrating surface 42 to enter the booth 41, and the surface of the entered workpiece 1 is painted inside the booth 41. The booth 41 includes a recovery device for collecting powder paint, a ventilation system for ventilation, and a filter for filtering paint.

The booth 41 may be formed in a single shape, but may be formed as a plurality of as shown in FIG.

The workpiece 1 having passed through the coating unit 40 is further reversed by 90 degrees to enter the drying unit 50 via the second switching unit 82 which is switched to 180 degrees.

6, the drying unit 50 is divided into an inlet unit 51 and a retaining unit 52. The inlet unit 51 and the retaining unit 52 are disposed at an angle of 90 degrees.

The arrangement of the inflow portion 51 and the retention portion 52 as described above has the advantage of increasing the airtightness of the heated air.

The inlet 51 has a two-layer height and the inlet 52 is formed with an inlet and outlet 53 having a height of one layer so that the height of the inlet 2 is blocked. 53 to the drying unit 50.

The retaining portion 52 is configured to communicate with the two layers of the inlet portion 51 on the side of the inlet portion 51.

A discharge duct 54 is formed at the upper end of the inflow outlet 53. The heated air of the retaining portion 52 is partially discharged through the inflow outlet 53 by the inflow and outflow of the object 1, Since the discharged heated air or the heated gas has an adverse effect of heating the inside of the plant, the heated air discharged is discharged to the outside through the discharge duct opening 54.

That is, the heated air (including some vaporizable substances) discharged through the inflow outlet 53 is discharged to the outside air through the discharge duct 54 to maintain the environment around the same.

If necessary, a blower may be mounted on the exhaust duct opening 54 so as to be forcedly exhausted.

The width of the outlet duct 54 is preferably equal to the width of the inlet 51 or the inlet outlet 53, and the width is preferably 1/5 to 1/3 of the width.

The heating gas discharged through the outlet duct opening 54 is leaked through the inlet opening 53 and can be mostly discharged in the width range. The size of the heating gas also has a manufacturing cost reduction effect.

As shown in FIG. 7, the conveying device 10 is structured to be inclined at the inlet 51 so as to gradually enter the two-stage holding portion 52 due to the above-described structure.

The heater (61) is positioned on the side of the retaining part (52) and serves to maintain the temperature of the entire retaining part (52) at a high level.

Particularly, as described above, the stay 52 is formed above the inlet 51, and the heated air inside the stay 52 is located at the upper end, so that the air is mainly purified in the stay 52, 51).

The conveying device 10 is provided with a third switching portion 83 which rotates the object 1 by 180 degrees on the retaining portion 52 so that the driven object 1 is reciprocated So that the residence time is doubled to increase the drying efficiency.

At this time, the width of the retaining portion 52 where the third switch portion 83 is located is preferably wide.

On the other hand, the object 1 to be circulated through the drying unit 50 is discharged through the inflow outlet 53, and is moved to the unloading unit 70 through three 90-degree switching.

The unloading portion 70 is formed in an open space without a separate device and is located at a side surface of the coating portion 30. [

Such an arrangement has the advantage of providing efficient use of the entire space.

In the unloading portion 70, the worker unloads the dried workpiece 1 by hand, and the entire painting process is completed through the unloading.

The loading section 20 and the preheating section 30 are arranged horizontally and the coating section 40 and the unloading section 70 are arranged vertically and the inlet section 51 of the drying section 50 When the retaining portion 52 of the drying portion 50 is vertically arranged horizontally, the loading space of the pre-coating object 1 necessary for the loading portion 20 and the finished object 1, Can be efficiently loaded in the same space, and the object 1 can be transferred without interference with other facilities by using a transportation means or the like.

The heating device 31 of the preheating part 30 and the heating device of the coating part 40 are set in consideration of the type of the driven article 1 and the characteristics of the coating, The filter and the heating configuration can be appropriately set according to the kind of the product to be painted and the kind of the coating, and the entire process can be carried out.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, And all of the various forms of embodiments that can be practiced without departing from the technical spirit.

1: conveyed object 10: conveying device
11: fixture 12: rail
13: Moving body 14: Drive unit
20: loading section 30: preheating section
31: heating device 32: blocking wall
40: paint part 41: booth
42: penetrating surface 50: drying part
51: inflow section 52: stay section
53: inlet inlet 54: outlet duct
61: heater 70: unloading part
81: first switching unit 82: second switching unit
83: third switching unit 100: powder coating apparatus

Claims

In the powder coating apparatus,
A conveying device including a rail disposed in a closed loop state supported by a plurality of columns, a moving body moving along the rail, a driving unit driving the moving body, and a fixture extending perpendicularly to the moving body;
A loading unit for loading the object to be fixed to the fixture;
A preheating unit including a heating unit positioned at the bottom and a blocking wall located at the side of the heating unit, the object fixed to the fixing unit being transferred to the upper end of the heating unit;
A coating unit including a booth and a penetrating surface formed on a side surface of the booth, the coated object fixed to the fixture flowing in and out through the penetrating surface;
A bottom portion of the retaining portion is formed to be higher than a height of the inflow outflow port and a bottom portion of the retaining portion is fixed to the fixing portion, Wherein the object to be handled is introduced into the inflow section, transferred to the retention section and then switched 180 degrees, transferred to the inflow section and discharged to the inflow outflow port, And
And an unloading unit for unloading the object fixed on the fixture,
The transfer device is installed to circulate the loading part, the preheating part, the coating part, the drying part and the unloading part,
Wherein the loading unit and the preheating unit are horizontally disposed, the coating unit and the unloading unit are vertically disposed, the inflow unit of the drying unit is horizontally disposed, the holding unit of the drying unit is vertically disposed, And a second switching portion for switching the conveyance direction between the first and second conveying portions to 180 degrees,
And a discharge duct for discharging the heated gas discharged through the inflow outlet, the inflow outlet having a size accommodating a width of the inflow outlet.

2. The powder coating apparatus according to claim 1, wherein the transfer device further comprises a first switching unit for switching the conveying direction by 180 degrees between the loading unit and the preheating unit, and a third switching unit for switching the conveying direction by 180 degrees in the holding unit Device.

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The powder coating apparatus according to claim 2, wherein the transfer device is installed in an inclined form in the inflow portion of the drying unit.

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