JP2000117156A - Powder coating equipment and coating method thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To perform powder coating utilizing an electric field fluidizing powder electrostatic coating system to a roll-shaped article to be coated made of a metal continuously at a high speed. SOLUTION: A powder coating equipment is equipped with a feed roll apparatus 1, an electrostatic powder coating apparatus 2, a drying oven 3, a cooling part 4 and a taking-up roll apparatus 5. Electric field fluidizing powder electrostatic coating is performed by these apparatuses through a first process developing an article to be coated wound into a roll form to send out the same, a second process electrostatically bonding a powder paint to the article to be coated, a third process drying the article to be coated, a fourth process cooling the article to be coated and a fifth process taking up the article to be coated.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a powder coating equipment for coating an object to be coated with a powder coating or other fine powder, and a method of coating the same.

[0002]

2. Description of the Related Art Conventionally, an electrostatic powder spray coating method has been employed on a production line of powder coated steel sheets. As shown in FIG. 5, air is blown from an air blowing means 41 into a powder paint supply device 42, and the powder paint is sent to a spray gun 43 provided with electrodes, and the powder paint is charged. Is applied to the grounded object 44 by spraying. As described above, in the coating method using the electrostatic powder spray method, a powder gun is applied to an object to be coated by electrostatic force using a spray gun provided with electrodes.

[0003]

In contrast to such an electrostatic powder spray coating method, there has hitherto been an electric fluidized powder electrostatic coating method. There are many advantages, such as high efficiency, a dense coating peculiar to electric field adhesion, and a thin film having excellent smoothness.

[0004] It is an object of the present invention to obtain an excellent powder coating on a metal roll-shaped coating object by using an electro-fluidic powder electrostatic coating method, and to perform the powder coating continuously and at a high speed. It is an object of the present invention to provide a powder coating equipment excellent in practical effects that can be carried out in a short time and a coating method thereof.

[0005]

According to the present invention, there is provided a feed roll apparatus, an electrostatic powder coating apparatus, a drying furnace, a cooling unit, and a take-up roll apparatus. A first step of developing and sending out the object to be coated wound into a roll, a second step of electrostatically adhering a powder coating or other fine powder to the object to be coated, and a second step of drying the object to be coated. A third step, a fourth step of cooling the object to be coated,
In the fifth step of winding the object to be coated, powder coating by the electro-fluidic powder electrostatic coating method is performed on the metal roll-shaped object to be coated.

[0006] In the present invention, there is also provided a feed roll device,
A cutting device, an electrostatic powder coating device, a drying furnace, a cooling unit, and an accumulating unit. These devices are used for developing and sending out a rolled object to be coated, and a first step of sending out the object. A second step of cutting the sheet into a sheet, a third step of electrostatically adhering a powder coating or other fine powder to the sheet of the article to be coated, and a fourth step of drying the sheet of the article to be coated. By a fifth step of cooling the sheet-shaped object to be coated and a sixth step of stacking the sheet-shaped object to be coated, the metal roll-shaped object to be coated is cut into a sheet shape. Performs powder coating using the electro-fluidic powder electrostatic coating method.

[0007] According to the present invention, a metal roll-shaped object to be coated is continuously coated with a powder coating of an electro-fluidic powder electrostatic coating method.
A powder coating equipment and a coating method that can be performed at high speed can be obtained.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A powder coating apparatus according to a first aspect of the present invention is a feed roll device that unfolds and feeds an object wound into a roll, and a feed roll device that is fed by the feed roll device. An electrostatic powder coating apparatus for electrostatically adhering powder paint or other fine powder to an object, a drying furnace for drying an object to which powder paint or other fine powder is adhered by the electrostatic powder coating apparatus, A cooling unit for cooling the object to be coated dried in the drying furnace;
And a winding roll device for winding the object to be coated sent from the cooling unit.

According to a second aspect of the present invention, there is provided a powder coating apparatus which unfolds and rolls an object to be coated in a roll shape, and feeds the object to be rolled out by the feed roll device into a sheet. A cutting device that cuts into pieces, an electrostatic powder coating device that electrostatically attaches a powder coating or other fine powder to a sheet-shaped object to be cut cut by the cutting device, and a powder coating device that uses an electrostatic powder coating device. A drying oven for drying the sheet-shaped object to be coated with other fine powder, a cooling unit for cooling the sheet-shaped object to be dried in the drying oven, and a sheet-shaped object sent from the cooling unit. And an accumulating unit for accumulating painted objects.

According to a third aspect of the present invention, there is provided the powder coating equipment according to the first or second aspect, wherein the electrostatic powder coating apparatus has an insulating structure in which a conveying path for a grounded object is formed. The coating room contains powder paint or other fine powder, and the powder paint or other fine powder is placed in a dense floating state in the coating room by vibrating means or oscillating means and air supply means. It has a powder paint supply unit to be supplied, and a paint spray device with an electrode that charges the supplied powder paint and other fine powder and adheres toward the surface to be coated by spraying air. is there.

According to a fourth aspect of the present invention, there is provided a coating method for a powder coating equipment, wherein a first step of unrolling and sending out the object to be coated wound into a roll is provided. A second step of electrostatically adhering the fine powder, a third step of drying the object to be coated, a fourth step of cooling the object to be coated, and a fifth step of winding the object to be coated. Things.

According to a fifth aspect of the present invention, there is provided a coating method for a powder coating equipment, wherein a first object to be rolled and unrolled is developed and sent out, and the object to be coated is cut into a sheet. A second step, a third step of electrostatically adhering a powder coating or other fine powder to the sheet-like object, a fourth step of drying the sheet-like object, and a fourth step of drying the sheet-like object. It has a fifth step of cooling the object to be coated and a sixth step of accumulating sheet-shaped objects to be coated.

[0013] With the above structure, a metal roll-shaped object to be coated is continuously coated with a powder coating of an electric fluid powder electrostatic coating method.
It can be performed at high speed.

An embodiment of the present invention will be described below with reference to the drawings. (Embodiment 1) FIG. 1 shows the overall configuration of a first embodiment of the present invention. In this embodiment, a powder coating equipment for one-side coating of a metal roll-shaped object to be coated is illustrated. In FIG. 1, reference numeral 1 denotes a feed roll device, which unfolds and sends out an object to be coated wound in a roll shape. Reference numeral 2 denotes an electrostatic powder coating device, which electrostatically adheres powder coating or other fine powder (hereinafter, simply referred to as powder coating) to the object to be coated sent from the feed roll device 1; Yes, the object to which the powder coating is applied by the electrostatic powder coating apparatus 2 is dried. Reference numeral 4 denotes a cooling unit that cools the object dried in the drying furnace 3. Reference numeral 5 denotes a take-up roll device,
Wind up the object to be coated cooled in. In addition, between the feed roll device 1 and the take-up roll device 5, a transport device 6 such as a conveyor as a transport means of the object to be coated is a device 2,
It is installed through 3 and 4.

FIG. 2 shows the configuration of an electrostatic powder coating apparatus for upper coating used in the powder coating equipment. In FIG. 2, reference numeral 11 denotes a coating chamber having an insulating structure, in which a conveying path for an object to be coated is set substantially at the center in the vertical direction, and a conveying device 6 is installed through an inlet on a front surface and an outlet on a rear surface. The transfer device 6 is grounded. A paint spraying device 12 with an electrode is arranged above the transport device 6. The paint spraying device 12 with an electrode is formed of a tube capable of supplying air, and is provided with an air blowout port 1 on a surface opposed to a conveyance path of a workpiece.
3 and a corona pin (electrode) 14. Here, the paint spraying device with electrode 12 itself is connected to an air supply source (not shown).
, Air is blown toward the conveying path of the object to be coated. The corona pin 14 is connected to an electrostatic high voltage generator (not shown) via a cable, a conductive material, and a resistor, and is supplied with electricity by the electrostatic high voltage generator.

A powder paint supply unit 15 is provided at the bottom of the coating chamber 11.
Is provided. The powder paint supply section 15 is a box having a two-stage structure as a whole. The powder paint supply section 15 is provided with a powder paint flow tank 16 having an upper surface open at the top, and an air introduction section 18 connected to a flow air device 17 at the bottom. A perforated plate 19 is provided in the middle (boundary) between the powder coating fluid flow tank 16 and the air introduction section 18, and the air blown into the lower air introduction section 18 by the operation of the flow air device 17 is supplied to the upper stage. Powder coating fluid tank 16
Sent to The powder coating material supply unit 15 has a roller, a rail, a roller, a slider, or the like interposed in a lower portion thereof, and is operatively connected to a powder flowing device 20 outside the coating chamber 11, and the whole of the powder coating material supply unit 15 vibrates or Rocked.
Further, a thin film 21 is stretched between the upper edge of the powder paint supply tank 15 and the inner wall of the coating chamber 11 so as not to interfere with the vibration of the powder paint supply section 15. As will be described later, after the powder paint is sowed from the powder paint flowing tank 16 into the coating chamber 11, the falling powder paint is collected in the powder paint flowing tank 16. Further, on both sides of the powder paint supply section 15, a first-stage blow-up device 22 and a second-stage blow-up device 23 are provided above and above the height position of the powder paint flow tank 16, respectively. Air device 1
7, and the air is blown out by the operation.

An exhaust port 24 is provided in the ceiling of the coating room 11. The exhaust port 24 is located above the exhaust passage 25.
Thereby, it is connected to an automatic reverse injection type bag filter mechanism 26 arranged outside the coating chamber 11. In addition, 27 is a filter, and 28 is a compressed air injection device 28. An air circulation path 29 is further connected to the automatic reverse injection type bag filter mechanism 26, and the air circulation path 29
Is connected to a lower wall surface of the coating chamber 11 slightly above a fixing position of the thin film 21 stretched around the powder coating fluid tank 16 via an opening / closing door 29D.

Next, the operation of the first embodiment will be described. In the operation of the powder coating equipment, in the electrostatic powder coating apparatus 2, the powder coating fluid tank 16 of the powder coating supply unit 15 is filled with the powder coating. In FIG. 1, the first
In step (1), first, the object to be coated wound into a roll is developed and sent out by the feed roll device 1. As a second process, the electrostatic powder coating device 2 starts electrostatic adhesion of the powder coating on the upper side of the object to be coated sent from the feed roll device 1.

That is, in the electrostatic powder coating apparatus 2 shown in FIG.
2 are activated.

In the powder paint supply section 15, the powder fluidizer 2
The whole is vibrated by 0, and air is blown into the air introduction part 18 from the flowing air device 17 and is blown out to the powder paint flowing tank 16 through the perforated plate 19. Further, each of the first-stage and second-stage blow-up devices 2 by the flowing air device 17.
Air is blown upward from 2 and 23. The air blown into the air introduction part 18 passes through the small holes of the perforated plate 19, and the powder paint filled in the powder paint flow tank 16 is blown up. Due to the vibration of the powder paint supply section 15 and the blowing of air from the air introduction section 18 to the powder paint flow tank 16, the powder paint filled in the powder paint flow tank 16 is loosened evenly. The air is blown up into the coating room 11, and the air is blown out from each of the first-stage and second-stage blow-up devices 22 and 23, thereby forming an ascending airflow. 11 floats in a dense state.

In the paint spraying device 12 with electrodes in the coating chamber 11, air is blown out from an air blowout port 13 toward a conveying path of a work to be coated.
An air current is generated from the paint spraying device with electrode 12 toward the conveying path of the object to be coated. In addition, the paint spraying device with electrode 12 is applied to, for example, a cathode by power transmission from a high-voltage static electricity generator (not shown), and the powder paint is charged to the same polarity by contacting or approaching the corona pin 14. You. That is, the powder coating material floating in the coating chamber 11 in a dense state is attracted to the coating material spraying device 12 with an electrode, and when passing through the coating material, the powder coating material is charged negatively. It is drawn into the airflow generated between the substrate and the transport path, and flies toward the transport path of the object to be coated. As the object to be coated is moved on the grounded transfer device 6 installed from the inlet to the outlet in the coating chamber 11, the paint spraying device 12 with the electrode and the grounded object are moved. An electric field is formed between the two, and the negatively charged powder coating material flies in the electric field by an air current and adheres to the upper surface of the object to be coated.

It is needless to say that the operation of the electrostatic powder coating apparatus 2 is stopped. The powder paint that has fallen is collected in the powder paint flowing tank 16 by the thin film 21 provided between the coating chamber 11 and the upper edge of the powder paint supply unit 15. The powder paint that has passed through the paint spraying device with electrode 12 and has not adhered to the object to be coated further rises to the ceiling side, and passes through the exhaust port 24 and the exhaust passage 25 in the ceiling, thereby causing the automatic reverse injection type bug. It is captured on the filter 27 of the filter mechanism 26. The captured powder paint is sprayed with compressed air from a compressed air injection device 28 and blown off from a filter 27, and directly into the powder paint flow tank 16 in the coating chamber 11 through an air circulation path 29 or While moving on the thin film 21, it is collected in the powder paint flowing tank 16.

When the powder coating material is electrostatically attached to the object to be coated in this manner, in FIG. 1, the object to be coated is dried in a drying furnace 3 as a third step. As a step, the object to be coated is cooled by the cooling unit 4. Then, the object to be coated sent out through such processing is taken up by the take-up roll device 5 as a fifth step.

FIG. 3 shows a configuration of an electrostatic powder coating apparatus for lower coating of an object to be coated used in the powder coating equipment. In the electrostatic powder coating apparatus 30, in the coating room 11 having an insulating structure, the powder coating material supply unit 1
Above 5, a paint spraying device 31 with an electrode is arranged to face the conveying path of the object to be coated. The difference between the configuration of the electrostatic powder coating apparatus 30 and the configuration of the electrostatic powder coating apparatus 2 is the position of the paint spraying apparatus 31 with electrodes. The other points are the same, and the same components are denoted by the same reference numerals, and the description thereof will not be repeated.

In the case of the electrostatic powder coating apparatus 30 for the lower side coating, when the respective driving sources of the powder coating supply section 15 and the paint spraying apparatus 31 with electrodes are operated, the powder coating supply is similarly performed. In the part 15, the whole is vibrated by the powder flowing device 20, air is blown from the flowing air device 17 into the air introduction part 18, and the powder paint flowing tank 16 is passed through the perforated plate 19.
Then, air is blown upward from each of the first-stage and second-stage blow-up devices 22 and 23 by the flowing air device 17, and the powder paint filled in the powder paint flow tank 16 is discharged. While being sowed in the coating room 11, it is blown up high by the rising airflow, and floats in the coating room 11 in a dense state. On the other hand, in the paint spraying device 31 with electrodes, air is blown out from the air blowout port 13 toward the conveying path of the object to be coated, and the corona pin 14 is energized by a high-voltage static electricity generator, and is applied to, for example, a cathode. The powder paint suspended in the coating chamber 11 in a dense state is attracted to the paint spray device 31 with electrodes, and is charged negatively when passing through the paint spray device 31, and the conveying path of the paint spray device 31 with electrodes and the object to be coated. Is drawn into the airflow generated during the process, and flies toward the conveyance path of the object to be coated.

The object to be coated is moved on the grounded transfer device 6 installed in the coating chamber 11 from the inlet to the outlet, and the paint spraying device 31 with the electrode and the object to be coated are moved. An electric field is formed therebetween, and the negatively charged powder coating material in the electric field flies by the airflow and adheres to the lower surface of the object to be coated.

As described above, according to the first embodiment, the first step of the feed roll apparatus 1, the second step of the electrostatic powder coating apparatus 2 or 30, and the third step of the drying furnace 3 are performed. The step, the fourth step of the cooling unit 4, and the fifth step of the take-up roll device 5 continuously apply the electro-fluidic powder electrostatic coating to one surface of the metal roll-shaped object to be coated. , And at high speed.

(Embodiment 2) FIG. 4 shows the overall configuration of a second embodiment of the present invention. This embodiment exemplifies a powder coating facility in which a metal roll-shaped object to be coated is sequentially cut into a sheet shape and one side thereof is coated. In FIG. 4, 1
Is a feed roll device, 2 (or 30) is an electrostatic powder coating device, 3 is a drying furnace, 4 is a cooling unit, and 6 is a transfer device, each of which is the first embodiment. Is the same as Reference numeral 7 denotes a cutting device, which is disposed at a stage subsequent to the feed roll device 1 and before the electrostatic powder coating device 2 (or 30), and sequentially cuts the objects to be coated sent from the feed roll device 1 into sheets. . Reference numeral 8 denotes an accumulation unit,
Is installed in place of the take-up roll device 5 of the embodiment, and the sheet-like objects to be coated cooled by the cooling unit 4 are stacked. Note that a table lifter (not shown) is installed in the stacking unit 8, and a sheet-like object after the completion of coating is stacked on the table. Reference numeral 9 denotes an unloading roller conveyor.
Sheet-like objects to be removed from

Next, the operation of the second embodiment will be described. In the operation of the powder coating equipment, the powder coating fluid tank 16 of the powder coating supply unit 15 is filled with the powder coating in the electrostatic powder coating apparatus 2 (30). In FIG. 4, as a first step, first, the feed roll device 1
The object to be coated wound in a roll is unfolded and sent out. The objects to be coated sent from the feed roll device 1 are sequentially cut into a sheet having a predetermined size and shape by a cutting device 7 as a second step. As a third process, the electrostatic powder coating device 2 (30) starts electrostatic adhesion of the powder coating on one surface of the sheet-shaped object to be coated cut by the cutting device 7.

That is, in the electrostatic powder coating apparatus 2 or 30 shown in FIG. 2 or FIG.
The whole is vibrated by the powder flowing device 20, and air is blown from the flowing air device 17 into the air introducing portion 18 and is blown out to the powder paint flowing tank 16 through the perforated plate 19. Further, air is blown upward from the first-stage and second-stage blow-up devices 22 and 23 by the flowing air device 17. The air blown into the air introduction part 18 passes through the small holes of the perforated plate 19, and the powder paint filled in the powder paint flow tank 16 is blown up. This powder coating supply unit 15
And the blowing of air from the air introduction unit 18 to the powder paint flow tank 16 causes the powder paint filled in the powder paint flow tank 16 to be loosened evenly and to fly into the coating chamber 11. Each of the first and second stage blow-up devices 2
Due to the blowing of air from 2 and 23, this forms an ascending airflow, and the powder paint is blown up high and floats in the coating chamber 11 in a dense state.

On the other hand, the paint spraying device 12 (or 3
In 1), air is blown from the air outlet 13 toward the conveying path of the object to be coated, and the air is blown out from the paint spraying device 12 (31) with electrodes toward the conveying path of the object to be coated. Airflow occurs. The paint spraying device with electrode 12 (31) is applied to, for example, a cathode by power transmission from a high-voltage static electricity generator (not shown), and the powder paint is brought into contact with or close to the corona pin 14 to have the same polarity. Is charged. That is, the coating room 1
1 is attracted to the paint spraying device 12 (31) with an electrode, and is
, And is drawn into the airflow generated between the paint spraying device with electrode 12 (31) and the conveying path of the object to be painted, and flies toward the conveying path of the object to be coated. Such a painting room 1
When the object to be coated is moved on the grounded conveying device 6 installed from the inlet to the outlet in the inside 1, the paint spraying device 12 (31) with the electrode and the grounded object are moved. An electric field is formed in the electric field, and the negatively charged powder coating material in the electric field flies by an air current and adheres to one surface of the object to be coated.

When the powder coating material is electrostatically adhered to the sheet-like object to be coated in this way, in FIG. 4, the object to be coated is dried in a drying furnace 3 as a fourth step. Then, as a fifth step, the sheet-shaped object to be coated is cooled by the cooling unit 4. Then, the sheet-like object to be coated sent out through such a process is stored in a stacking unit 8 as a sixth step.
Is accumulated on the table lifter. When a predetermined amount of objects to be coated are accumulated on the table lifter, the objects to be coated are taken out from the accumulation unit 8 by being put on the carry-out roller conveyor 9.

As described above, according to the second embodiment, the first process of the feed roll device 1, the second process of the cutting device 7, and the third process of the electrostatic powder coating device 2 or 30 are performed. Process and
By the fourth step of the drying furnace 3, the fifth step of the cooling unit 4, and the sixth step of the accumulating unit 8, the metal roll-shaped object is cut from the electric fluidized powder static electricity to one side thereof. Electrocoating can be performed continuously and at high speed.

[0034]

As described above, the present invention includes a feed roll device, an electrostatic powder coating device, a drying furnace, a cooling unit, and a take-up roll device.
A first step of unrolling and feeding the object to be coated wound in a roll, a second step of electrostatically adhering a powder coating or other fine powder to the object to be coated, and a third step of drying the object to be coated Process and
Since the electro-fluidic powder electrostatic coating is performed through the fourth step of cooling the object to be coated and the fifth step of winding the object to be coated, the coating efficiency is high for the roll-shaped object to be coated. Powder coating can be performed continuously and at high speed to obtain a coating film having a fine coating surface and a thin film with excellent smoothness, and its practical effect is great.

According to the present invention, there is also provided a feed roll device,
It has a cutting device, an electrostatic powder coating device, a drying furnace, a cooling unit, and an accumulating unit. By using these devices, the first process of developing and sending out the object to be coated wound into a roll, and A second step of cutting the sheet into a sheet, a third step of electrostatically adhering a powder coating or other fine powder to the sheet of the article to be coated, and a fourth step of drying the sheet of the article to be coated. Through a fifth step of cooling the sheet-shaped object to be coated and a sixth step of stacking the sheet-shaped object to be coated, the metal roll-shaped object to be coated is cut into a sheet, Since the body electrostatic coating is performed, cutting of the roll-shaped object to be coated and obtaining a coating film with high coating efficiency, dense coating surface, thin film and excellent smoothness on the cut object to be coated are obtained. Powder coating can be performed continuously and at high speed, and its practical effect is great.

[Brief description of the drawings]

FIG. 1 is a schematic plan view showing the overall configuration of a powder coating equipment according to a first embodiment of the present invention.

FIG. 2 is a front cross-sectional view showing a configuration of an electrostatic powder coating apparatus used for the powder coating equipment and for coating an object to be coated on an upper side.

FIG. 3 is a front cross-sectional view showing a configuration of an electrostatic powder coating device used for the powder coating equipment and for applying a lower coating to an object to be coated.

FIG. 4 is a schematic plan view showing the entire configuration of a powder coating equipment according to a second embodiment of the present invention.

FIG. 5 is a schematic explanatory view showing a conventional electrostatic powder spray coating method used on a powder-coated steel sheet production line.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 feed roll device 2 electrostatic powder coating device 3 drying furnace 4 cooling unit 5 take-up roll device 6 transport device 7 cutting device 8 stacking unit 9 unloading roller conveyor 11 coating room 12 paint spraying device with electrode 13 air outlet 14 corona pin (Electrode) 15 Powder paint supply section 16 Powder paint flow tank 17 Flowing air device 18 Air introduction section 19 Perforated plate 20 Powder flow device 21 Thin film 22 First stage blower 23 Second stage blower 24 Exhaust port 25 Exhaust Passage 26 Automatic reverse injection type bag filter mechanism 27 Filter 28 Compressed air injection device 29 Air circulation path 29D Opening / closing door 30 Electrostatic powder coating device 31 Paint spraying device with electrode

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Toshio Fujimura 3-5-12 Nihonbashi, Chuo-ku, Tokyo Inside Mesac Co., Ltd. (72) Inventor Takashi Tanaka 3-5-1-12 Nihonbashi, Chuo-ku, Tokyo Mesac Co., Ltd. F term (reference) 4D075 AB09 BB18Z BB24Y DA04 EA02 4F034 AA01 CA02 DA07 DA26

Claims (5)

[Claims] 1. An object to be coated wound in a roll is developed,
A feed roll device for feeding, an electrostatic powder coating device for electrostatically adhering a powder coating or other fine powder to the object to be coated sent by the feed roll device, and a powder coating or other fine powder by the electrostatic powder coating device. A drying furnace for drying the object to be coated with the body, a cooling unit for cooling the object to be dried in the drying furnace, and a winding roll device for winding the object to be coated sent from the cooling unit are provided. Powder coating equipment. 2. An object to be coated wound in a roll is developed,
A feed roll device for feeding, a cutting device for cutting the object to be coated sent out by the feed roll device into a sheet, and a powder coating or other fine powder is electrostatically adhered to the sheet-shaped object to be cut by the cutting device. An electrostatic powder coating device, a drying oven for drying a sheet-like object to which powder paint or other fine powder is adhered by the electrostatic powder coating device, and a sheet-like object dried in the drying oven. Powder coating equipment comprising a cooling unit for cooling a coated object and an accumulating unit for accumulating a sheet-shaped object to be coated sent from the cooling unit. 3. An electrostatic powder coating apparatus includes a coating chamber having an insulated structure in which a grounded conveying path for an object to be coated is formed. Means or a rocking means and an air supply means for supplying a powder paint or other fine powder in a dense floating state in the coating chamber, and charging the supplied powder paint or other fine powder. The powder coating equipment according to claim 1, further comprising a paint spraying device with an electrode, which adheres to a surface to be coated of the workpiece by spraying air. 4. An object to be coated wound in a roll is developed,
A first step of feeding, a second step of electrostatically adhering a powder coating or other fine powder to the object to be coated, a third step of drying the object to be coated, and a fourth step of cooling the object to be coated. A coating method for a powder coating facility, comprising a step and a fifth step of winding the object to be coated. 5. An object to be coated wound in a roll is developed,
A first step of feeding, a second step of cutting the object to be coated into a sheet, a third step of electrostatically adhering a powder coating or other fine powder to the sheet-shaped object, A fourth step of drying the object to be coated, a fifth step of cooling the sheet-shaped object to be coated, and a sixth step of accumulating the sheet-shaped object to be coated.
And a coating method for powder coating equipment.