KR102173304B1 - Apparatus for cleaning strip coating roll - Google Patents

Abstract

Disclosed is a steel plate coating roll cleaning apparatus. The steel plate coating roll cleaning apparatus according to the present embodiment includes a drip pan provided to accommodate a resin solution, and to which a supply pipe and a discharge pipe through which the resin solution is supplied and discharged are connected; A scraper for cleaning the coating roll coating the surface of the steel sheet with a resin solution; And a solution tank connected to the supply pipe and the discharge pipe to store the resin solution, wherein the drip pan is capable of receiving the resin solution and has a first receiving space so that at least a portion of the pickup roll connected to the coating roll can be submerged. A second drip pan may be provided including a first drip pan and a second drip pan provided outside the first drip pan and having a second receiving space in which foreign substances and resin solutions generated by contact with the scraper are accommodated.

Description

Steel plate coating roll cleaning device {APPARATUS FOR CLEANING STRIP COATING ROLL}

The present invention relates to a steel plate coating roll cleaning apparatus, and more particularly, by removing foreign substances formed on the surface of the coating roll with a scraper and filtering and reusing a mixed solution of foreign substances and a resin solution through separation of a drip pan, the quality of the steel plate is poor. It is a steel plate coating roll cleaning device that minimizes the efficiency and improves productivity.

In general, in order to improve corrosion resistance in areas where chemical conversion treatment and electrodeposition coating are difficult among plated steel plates used for home appliances and automobiles, an organic solution is coated on the surface of the plated steel plate. For example, as a post-plating treatment, a process of coating a coating liquid such as black resin, organic resin, fingerprint resin, and lubricating resin on the surface of the plated steel sheet is performed.

In a conventional steel plate coating apparatus, a drip pan containing a resin solution is located on one side of the coating roll, and a part of the pickup roll is rotated while being immersed in the drip pan, so that the resin solution is buried on the surface, and the pickup roll contacts the coating roll. As the solution is delivered, the coating roll coats the surface of the steel sheet with the resin solution.

During such coating work, the coating roll rotates at a low speed (approximately 10 to 20 mpm) until the next coating operation.Therefore, the solution does not circulate in the drip pan containing a resin solution such as CR-Free, which may cause a stagnation phenomenon. have. Accordingly, solids may be accumulated in multiple layers on both ends of the coating roll and some may be removed and mixed into a solution, and it may be transferred to the steel plate through the pickup roll and the coating roll, resulting in streak defects and dents, and the quality may be degraded. have. In addition, if foreign substances are lodged in the coating roll and the occurrence of dants becomes severe, the entire coating roll must be replaced.

Accordingly, a steel plate coating roll cleaning apparatus for cleaning a coating roll coating a surface of a steel plate has been disclosed, but there is a problem in that foreign matters dropped off from the coating roll are mixed into the resin solution of the drip pan.

Korean Patent Application Publication No. 10-2009-0001046 (published on January 08, 2009)

The present embodiment is to provide a steel plate coating roll cleaning apparatus that prevents the occurrence of surface defects of the steel plate as much as possible by removing foreign substances formed on the coating roll and ultimately improves the coating quality of the steel plate.

The present embodiment is to provide a steel plate coating roll cleaning apparatus capable of reducing the occurrence of defects and dants in the steel plate by filtering foreign substances in a resin solution through separation of the drip pan to reduce the occurrence of foreign substances in the pickup roll.

An object of the present embodiment is to provide a steel plate coating roll cleaning apparatus capable of reusing a resin solution obtained by filtering foreign substances through separation of a drip pan for steel plate coating.

The present embodiment is to provide a steel plate coating roll cleaning device that can easily remove foreign substances through easy replacement of a filter.

The present embodiment is to provide a steel plate coating roll cleaning apparatus capable of maintaining a constant level of a resin solution in a drip pan.

The present embodiment is to provide a steel plate coating roll cleaning apparatus capable of operating a scraper by checking whether foreign substances are formed on the coating roll with a monitor.

According to one aspect of the present embodiment, a resin solution is provided to be accommodated, and a drip pan to which a supply pipe and a discharge pipe through which the resin solution is supplied and discharged are connected; A scraper for cleaning the coating roll coating the surface of the steel sheet with a resin solution; And a solution tank connected to the supply pipe and the discharge pipe to store a resin solution, wherein the drip pan is capable of receiving a resin solution so that at least a portion of the pickup roll connected to the coating roll can be immersed. A steel plate coating roll comprising a first drip pan having a first drip pan and a second drip pan provided outside the first drip pan and having a second receiving space for receiving foreign substances and resin solutions generated by contact with the scraper A cleaning device may be provided.

The first drip pan includes a first discharge part connected to the discharge pipe to discharge the resin solution to the solution tank, and the second drip pan includes a second discharge part connected to the discharge pipe to discharge the resin solution, wherein the The second discharge unit may be provided with a steel plate coating roll cleaning apparatus including a filter unit that filters foreign substances.

The filter unit includes a connection pipe in communication with the discharge pipe, a cap formed in a hollow shape and having at least one hole formed at a side thereof, and a cap provided inside the connection pipe, and a filter member that filters foreign substances by being coupled to the outer peripheral surface of the cap A steel plate coating roll cleaning device comprising a may be provided.

A steel plate coating roll cleaning apparatus further comprising a pump for supplying a resin solution from the solution tank to the first receiving space may be provided.

The first discharge unit may be provided with a steel plate coating roll cleaning apparatus including a drain cap for discharging the resin solution to the discharge pipe when the resin solution in the first receiving space exceeds a predetermined level.

The scraper may be provided with a steel plate coating roll cleaning apparatus including a blade provided to be in contact with the surface of the coating roll, a bracket for fixing both ends of the blade, and a pneumatic cylinder for adjusting an angle of the blade.

The scraper may be provided with a steel plate coating roll cleaning device provided in a pair at both ends of the coating roll.

A steel plate coating roll cleaning apparatus further comprising a control unit for controlling whether or not the scraper is operated may be provided.

The control unit may be provided with a steel plate coating roll cleaning apparatus including a camera for checking both ends of the coating roll and a monitor for checking a screen transmitted from the camera.

The steel plate coating roll cleaning apparatus according to the present embodiment has the effect of preventing the occurrence of surface defects of the steel plate as much as possible by removing foreign substances formed on the coating roll and ultimately improving the coating quality of the steel plate.

The steel plate coating roll cleaning apparatus according to the present embodiment has an effect of reducing the occurrence of defects and dants in the steel plate by filtering foreign substances in the resin solution through separation of the drip pan to reduce the occurrence of foreign substances in the pickup roll.

The steel plate coating roll cleaning apparatus according to the present embodiment has an effect of reusing a resin solution obtained by filtering foreign substances through separation of a drip pan for steel plate coating.

The steel plate coating roll cleaning apparatus according to the present embodiment has the effect of easily removing foreign substances through easy replacement of the filter.

The steel plate coating roll cleaning apparatus according to the present embodiment has an effect of maintaining a constant level of the resin solution in the drip pan.

The steel plate coating roll cleaning apparatus according to the present embodiment has an effect of operating the scraper by checking whether foreign substances are formed on the coating roll with a monitor.

1 is a side view showing the overall configuration of a steel plate coating roll cleaning apparatus according to the present embodiment.
2 is a perspective view of a steel plate coating roll cleaning apparatus according to this embodiment.
3 is a side view of a steel plate coating roll cleaning apparatus according to the present embodiment.
4 is an exploded perspective view of the filter unit of the steel plate coating roll cleaning apparatus according to the present embodiment.
5 is a cross-sectional view of the filter unit of the steel plate coating roll cleaning apparatus according to the present embodiment.
6 is a cross-sectional view showing a control unit of the steel plate coating roll cleaning apparatus according to the present embodiment.

Hereinafter, the present embodiment will be described in detail with reference to the accompanying drawings. The following examples are presented in order to sufficiently convey the idea of the present invention to those skilled in the art to which the present invention pertains, and may be embodied in other forms without being limited thereto. In the drawings, in order to clarify the present invention, the illustration of parts not related to the description may be omitted, and the size of the components may be slightly exaggerated to help understanding.

The steel plate 1 may be coated with a resin solution such as a chromium-free solution to improve corrosion resistance. The coating operation of the steel plate 1 may be performed by transferring the resin solution of the drip pan 100 to the pickup roll 30 and the coating roll 20. However, due to the stagnation in which the resin solution cannot be circulated in the drip pan 100, solids may be accumulated in multiple layers at both ends of the coating roll 20, and some of the solids are removed from the coating roll 20 as foreign substances. When mixed with the resin solution, it is transferred to the pick-up roll 30 and the coating roll 20 and may cause streak defects and dents in the steel plate 1. Therefore, by bringing the scraper 200 into contact with the coating roll 20 through the steel plate coating roll cleaning apparatus 10 of the present invention, foreign substances and resin solutions at both ends of the coating roll 20 are removed, and the drip pan 100 is separated. The quality of the steel sheet can be improved by separating the resin solution from foreign substances.

1 is a side view showing the overall configuration of a steel plate coating roll cleaning apparatus 10 according to the present embodiment.

1, a steel plate coating roll cleaning apparatus 10 according to an aspect of the present invention is disposed near the coating roll 20 through which the steel plate 1 passes, and is provided to accommodate a resin solution, and a resin solution is supplied. And from the drip pan 100 to which the discharged supply pipe 140 and the discharge pipe 130 are connected, the solution tank 300 which is connected to the supply pipe 140 and the discharge pipe 130 to store the resin solution, and the solution tank 300 A pump 400 for supplying a resin solution to the drip pan 100, and a scraper 200 for cleaning the coating roll 20 for coating the surface of the steel plate 1 with the resin solution.

The solution tank 300 stores the resin solution discharged through the discharge pipe 130 from the first drip pan 110 and the second drip pan 120 to be described later. In addition, the solution tank 300 may be provided with a stirring device 310 for stirring the resin solution in the tank. The solution tank 300 may supply the resin solution to the first drip pan 110 through the supply pipe 140 using the pump 400.

2 is a perspective view of the steel plate coating roll cleaning apparatus 10 according to the present embodiment, Figure 3 is a side view of the steel plate coating roll cleaning apparatus 10 according to the present embodiment.

2 and 3, the steel plate coating roll cleaning apparatus 10 includes a drip pan 100 in which a resin solution is accommodated.

The drip pan 100 is provided outside the first drip pan 110 and the first drip pan 110 having a first receiving space 112 in which the pickup roll 30 is immersed, and a second receiving space 122 It includes a second drip pan 120 having a.

The first drip pan 110 may be provided inside the second drip pan 120 to be described later. In more detail, at least one fixing bracket 111 is provided in the first drip pan 110, and the fixing bracket 111 may be fixed to the inner wall of the second drip pan 120 by bolts. In addition, the height of the first drip pan 110 may be formed at least higher than the level of the resin solution of the second drip pan 120 so that the resin solution of the second drip pan 120 does not pass to the first drip pan 110. have.

The first drip pan 110 is located at the lower end of the pickup roll 30 so that at least a portion of the pickup roll 30 is locked. In addition, the width of the first drip pan 110 must be smaller than the width of the pickup roll 30 so that the pickup roll 30 can be locked. The first drip pan 110 prevents the first drip pan 110 from extending to the lower end of the coating roll 20 so that foreign substances separated from the coating roll 20 do not fall on the first drip pan 110. It is desirable.

The first drip pan 110 includes a first receiving space 112 for accommodating a resin solution. In more detail, the first receiving space 112 rotates while part of the pickup roll 30 is immersed in the resin solution to deliver the resin solution to the coating roll 20, so that the pickup roll 30 can be immersed at a constant level. It has a space that can accommodate the resin solution of.

A resin solution in which foreign substances are not mixed is accommodated in the first receiving space 112 of the first drip pan 110. In more detail, foreign matters separated from the coating roll 20 fall on the second drip pan 120, and the pickup roll 30 connected to the coating roll 20 is a first receiving space ( 112) contains a resin solution that does not contain foreign substances.

The first drip pan 110 includes a first discharge part 113 connected to the discharge pipe 130. In more detail, the first drip pan 110 includes a first discharge part 113 connected to the discharge pipe 130 to discharge the resin solution to the solution tank 300 to keep the level of the resin solution constant. I can. For example, when the resin solution is filled in the first receiving space 112 above a certain level, the pickup roll 30 may be deeply immersed in the resin solution, and accordingly, the resin solution is excessively transferred to the coating roll 20. As a result, the solution can be thickly coated on the steel plate 1. In addition, if the water level of the resin solution is not constant, the amount of the resin solution delivered to the coating roll 20 is not constant, so that the coating thickness of the steel plate 1 may not be uniform. Accordingly, the first discharge unit 113 may include a drain cap (not shown) for discharging the resin solution to the discharge pipe 130 when the resin solution in the first receiving space 112 exceeds a predetermined level.

The first drip pan 110 may include a first supply unit 114 connected to a supply pipe 140 through which a resin solution is supplied from the solution tank 300. In more detail, the resin solution discharged from the first drip pan 110 and the resin solution filtered out of foreign substances from the second drip pan 120 through the filter unit 150 are discharged to the solution tank 300, and the solution tank The resin solution stored in 300 may be supplied to the first supply unit 114 using the pump 400. In addition, the first supply unit 114 is provided to face the first drip pan 110 and can supply a pure resin solution to the first drip pan 110.

The second drip pan 120 may be provided outside the first drip pan 110. In more detail, the second drip pan 120 is coated so that the scraper 200, which will be described later, contacts the coating roll 20, and foreign substances that are separated from the coating roll 20 can fall into the second accommodation space 122. It is preferable to be located at the lower end of the roll 20. In addition, it is preferable not to extend in the direction of the backup roll 40 so as to secure a space in which the steel plate 1 is transferred between the backup roll 40 and the coating roll 20. In this embodiment, the first drip pan 110 is provided inside the second drip pan 120, but is not limited thereto, and the first drip pan 110 may be provided outside the second drip pan 120. have.

A scraper 200 to be described later may be installed inside the second drip pan 120. In more detail, the bracket 230 of the scraper 200 may be installed on the inner wall of the second drip pan 120, and the scraper 200 may be provided at both ends of the coating roll 20 where foreign matter occurs most. have. Further, the bracket 230 supporting the scraper 200 is fixed to the inner wall of the second drip pan 120, and the blade 210 for removing foreign substances by contacting the coating roll 20 is It may be provided in the direction of the coating roll 20 from the bottom. The specific shape and operation method of the scraper 200 will be described later.

The second drip pan 120 may include a second receiving space 122 in which foreign substances and resin solutions generated by contact with the scraper 200 are accommodated. In more detail, the second receiving space 122 is present in a state in which foreign substances and resin solution separated from the coating roll 20 are mixed, and when the resin solution is discharged to the solution tank 300, the second discharge unit 123 It is possible to filter out foreign substances by the filter unit 150 and discharge only pure resin solution.

The second drip pan 120 includes a second discharge part 123 connected to the discharge pipe 130 to discharge a resin solution, and the second discharge part 123 includes a filter unit 150 that filters foreign substances. do. Details of the filter unit 150 will be described later.

The coating roll 20 rotates in a direction opposite to the backup roll 40 and pressurizes both sides of the steel plate 1 to transfer, and coats the surface of the steel plate 1 with a resin solution. That is, the coating roll 20 has a backup roll 40 on one side and a pickup roll 30 on the opposite side, so that the resin solution transferred from the pickup roll 30 is transferred between the backup roll 40 and the steel sheet. It is coated on (1).

The pickup roll 30 is provided so that at least a portion of the first drip pan 110 is immersed in the resin solution, and transfers the resin solution to the coating roll 20. That is, the pick-up roll 30 rotates oppositely in connection with the coating roll 20, and transfers the resin solution to the coating roll 20 by contact.

The scraper 200 includes a blade 210 provided to be in contact with the coating roll 20, a pair of brackets 230 for fixing both ends of the blade 210, and rotary pneumatic pressure for adjusting the angle of the blade 210 Includes a cylinder 220.

In addition, the scraper 200 may be provided in a pair at both ends of the coating roll 20.

When the scraper 200 is operated, the blade 210 rotates by the rotary pneumatic cylinder 220 to contact the coating roll 20, and when the operation is stopped, the blade 210 is kept spaced from the coating roll 20. Is done. In more detail, when the scraper 200 is operated, the blade 210 rotates in a direction opposite to the rotation direction of the coating roll 20 to contact the coating roll 20 to remove foreign substances and resin solution, and when the operation is stopped The coating roll 20 is rotated in the same direction as the rotation direction of the coating roll 20 to be spaced apart from the coating roll 20.

The blade 210 of the scraper 200 may be provided detachably, and may be provided to be replaceable as it may be worn by contact with the coating roll 20.

4 is an exploded perspective view of the filter unit 150 of the steel plate coating roll cleaning apparatus 10 according to the present embodiment, and FIG. 5 is a filter unit 150 of the steel plate coating roll cleaning apparatus 10 according to the present embodiment. Is a cross-sectional view.

The second drip pan 120 includes a second discharge part 123 connected to the discharge pipe 130 to discharge a resin solution, and the second discharge part 123 includes a filter unit 150 that filters foreign substances. do.

The filter unit 150 includes a connection pipe 151 in communication with the discharge pipe 130 and a cap 153 formed in a hollow shape through which a plurality of holes 153a are passed through the connection pipe 151 and provided inside the connection pipe 151 And, it may include a filter member 152 for filtering foreign substances by being coupled to the outer peripheral surface of the cap 153.

The connection pipe 151 and the discharge pipe 130 are coupled with a bolt 155a and a nut 155b, and a washer 154 having an inner diameter smaller than that of the discharge pipe 130 is provided therebetween.

The cap 153 has the same outer diameter as the inner diameter of the washer 154, but is provided with a flange 153b formed at the lower end to be supported by the washer 154. In the exemplary embodiment of the present invention, a plurality of holes 153a of the cap 153 exist in a circular shape, but the present invention is not limited thereto, and if a flow path can be formed, it may be understood as various shapes such as a rectangle and a triangle.

The filter member 152 must be made of a material that can pass through the resin solution and filter out foreign substances, and may be provided in a cylindrical shape having upper and lower surfaces passing through and corresponding to the outer peripheral surface of the cap 153.

When the mixed solution of foreign matter and resin solution passes through the filter unit 150, the foreign matter is caught in the filter member 152, and the resin solution passes through the hole 153a of the cap 153 and is discharged to the discharge pipe 130. Accordingly, as time passes, foreign substances accumulate on the outside of the filter member 152, and only the filter member 152 can be removed from the cap 153 and replaced easily.

6 is a cross-sectional view showing the control unit 500 of the steel plate coating roll cleaning apparatus 10 according to the present embodiment.

The control unit 500 may be provided to control the operation of the scraper 200. In more detail, the controller 500 may be provided to control an air line supplying air to the rotary pneumatic cylinder 220 for adjusting the angle of the scraper 200 and a solenoid valve that operates the air line.

The controller 500 may include a camera 510 for checking whether foreign substances are generated at both ends of the coating roll 20 and a monitor 520 for checking a screen transmitted from the camera 510.

The camera 510 is supported by a separate support or the drip pan 100 to transmit the state of both ends of the coating roll 20 to the monitor 520 in real time.

The monitor 520 is provided to check the screen transmitted from the camera 510, and the operator checks whether foreign matter is generated through the monitor 520, and operates or operates the scraper 200 through the control unit 500. You can stop it.

Next, the operation of the steel plate coating roll cleaning apparatus 10 of the present invention will be described.

2 to 6, the pickup roll 30 rotates while being immersed in the resin solution of the second drip pan 120, and the coating roll 20 connected with the pickup roll 30 is a pickup roll 30. It rotates in the opposite direction. In addition, the resin solution transferred from the pickup roll 30 to the coating roll 20 contacts the steel plate 1 to coat the steel plate 1. At this time, foreign substances such as solids may be generated in the coating roll 20, and particularly, a lot of occurrences are generated on both ends of the coating roll 20. The camera 510 is provided near both ends of the coating roll 20 and checks the screen transmitted through the camera 510 on the monitor 520 to determine whether or not a foreign substance is generated in the coating roll 20. When foreign substances such as solids occur, the scraper 200 is operated through the control unit 500. When the scraper 200 is operated, the blade 210 spaced apart from the coating roll 20 is rotated by the rotary pneumatic cylinder 220 to contact the coating roll 20. Foreign matter and resin solution formed on the surface of the coating roll 20 are separated by contact with the blade 210 and fall on the second drip pan 120 provided at the bottom of the coating roll 20. Accordingly, in the second receiving space 122 of the second drip pan 120, a foreign substance and a resin solution are present in a mixed state, and the discharge pipe through the second discharge part 123 provided at the bottom of the second drip pan 120 It is discharged to 130. In this case, the mixed solution is filtered out by the filter unit 150 provided in the second discharge unit 123, and the resin solution is transferred to the solution tank 300 through the discharge pipe 130. The resin solution transferred and stored in the solution tank 300 is transferred to the supply pipe 140 by the pump 400 and supplied to the first drip pan 110 through the first supply unit 114. Therefore, the resin solution in which foreign substances are not mixed is accommodated in the first receiving space 112 of the first drip pan 110. At this time, a first discharge part 113 is provided at the lower end of the first drip pan 110, and the first discharge part 113 is discharged pipe 130 when the resin solution exceeds a certain level in the first receiving space 112. ) And a drain cap (not shown) for discharging the resin solution, and the resin solution can be maintained at a certain level.

As described above, the steel plate coating roll cleaning device 10 is operated to remove foreign substances from the coating roll 20, and the resin solution is separated and filtered to reduce defects and dant in the steel plate 1, and ultimately the steel plate 1 Can improve the quality of the coating.

In addition, the mixed solution can be separated into a resin solution and foreign substances using the filter unit 150, and foreign substances can be easily removed through replacement of the filter member 152 coupled to the outer peripheral surface of the cap 153.

Until now, a specific embodiment of the steel plate coating roll cleaning apparatus 10 of the present invention has been described, but it is obvious that various implementation modifications are possible within the limit not departing from the scope of the present invention.

Therefore, the scope of the present invention is limited to the described embodiments and should not be transmitted, and should be determined not only by the claims for patent registration to be described later, but also by those equivalents to the claims for patent registration.

That is, it should be understood that the above-described embodiments are illustrative in all respects and not limiting, and the scope of the present invention is indicated by the patent registration claims to be described later rather than the detailed description, and the meaning of the patent registration claims and It should be construed that all changes or modifications derived from the scope and equivalent concepts are included in the scope of the present invention.

1: steel plate 10: steel plate coating roll cleaning device
20: coating roll 30: pickup roll
40: backup roll 100: drip pan
110: first drip pan 111: fixing bracket
112: first accommodation space 113: first discharge unit
114: first supply unit 120: second drip pan
122: second accommodation space 123: second discharge unit
130: discharge pipe 140: supply pipe
150: filter unit 151: connector
152: filter member 153: cap
153a: hole 153b: flange
154: washer 155a: bolt
155b: nut 200: scraper
210: blade 220: rotary pneumatic cylinder
230: bracket 300: solution tank
310: stirring device 400: pump
500: control unit 510: camera
520: monitor

Claims (9)

A drip pan to which a resin solution is provided to be accommodated and to which a supply pipe and a discharge pipe through which the resin solution is supplied and discharged are connected;
A scraper for cleaning the coating roll coating the surface of the steel sheet with a resin solution; And
Includes; a solution tank connected to the supply pipe and the discharge pipe to store a resin solution,
The drip pan is
A first drip pan having a first receiving space so that at least a portion of the pickup roll connected to the coating roll can be immersed by accommodating a resin solution, and a first drip pan separately provided outside the first drip pan by contact of the scraper. It includes a second drip pan having a second receiving space in which a mixed solution of generated foreign matter and resin solution is accommodated,
The first drip pan
A first discharge part connected to the discharge pipe to discharge the resin solution to the solution tank,
The second drip pan
It includes a second discharge unit connected to the discharge pipe to discharge the resin solution,
The second discharge unit
Steel plate coating roll cleaning device including a filter unit to filter out foreign matter. delete The method of claim 1,
The filter unit
A steel plate including a connection pipe in communication with the discharge pipe, a cap formed in a hollow shape and having at least one hole on a side thereof, a cap provided inside the connection pipe, and a filter member that filters foreign substances by being coupled to the outer peripheral surface of the cap Coating roll cleaning device. The method of claim 3,
A steel plate coating roll cleaning apparatus further comprising a pump for supplying a resin solution from the solution tank to the first receiving space. The method of claim 4,
The first discharge unit
Steel plate coating roll cleaning apparatus comprising a drain cap for discharging the resin solution to the discharge pipe when the resin solution in the first receiving space exceeds a predetermined level. The method of claim 5,
The scraper is
A steel plate coating roll cleaning apparatus comprising a blade provided to be in contact with the surface of the coating roll, a bracket for fixing both ends of the blade, and a pneumatic cylinder for adjusting an angle of the blade. The method of claim 6,
The scraper is
A steel plate coating roll cleaning device provided in a pair at both ends of the coating roll. The method of claim 7,
A steel plate coating roll cleaning apparatus further comprising a control unit for controlling whether or not the scraper is operated. The method of claim 8,
The control unit
A steel plate coating roll cleaning apparatus comprising a camera for checking both ends of the coating roll and a monitor for checking a screen transmitted from the camera.

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