JPH1029141A - Removing for article stuck to roll - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a reasonably priced and compact removing device capable of surely and easily removing stuck articles by forming a belt section in the lower end part of hook-shaped stuck article scratching member so as to bring its tip into contact with a roll and holding its upper end part to be rotated. SOLUTION: A scratching member 11 for stuck articles hook-shaped in section includes a shaft 10 both ends of which are held by a bearing 12 so as to be rotated, a holding member 9 connected to the shaft 10, a belt member 7 functioning as a tub U-shaped in section and connected to the lower end part of the holding member 9 and a blade 6 connected to the bent member 7 and functioning as a scraper whose tip is brought into contact with a current carrying roll 3. Thus, stuck articles removed by a grinder 16 are stuck to the conductive roll 3, scraped in the contact part with the roll 3 by the blade 6 and then dropped into the bent member 7. Then, by providing the slope of a roll width direction in the bottom part of the bent member 7, that is, the gutter, the stuck articles are moved to one end and easily removed to the outside of the system.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for removing deposits on a roll surface used in a processing line such as a metal strip.

[0002]

2. Description of the Related Art Many rolls are used in a processing line of a metal strip or the like for running the strip.
Foreign matter may adhere to these roll surfaces. Accumulation of foreign matter may be caused by sporadic extraneous matter caused by the arrival of extraneous foreign matter, or accumulative matter such as contaminant matter of the processing liquid which is likely to be generated on the intermediate roll or the outlet roll of the processing tank. The cause of the occurrence is various, such as in the case of a deposit.

For example, in order to prevent corrosion of a steel strip, metal plating such as zinc, tin, and chromium is widely performed on the surface of a steel sheet by electroplating. As a plating apparatus for performing such plating, a horizontal electroplating apparatus is widely used. Hereinafter, a case in which zinc plating is applied to the surface of a steel sheet by equipment used for zinc-based electroplating such as zinc plating, zinc-nickel plating, and zinc-iron plating will be described as an example.

FIG. 3 shows an example of a horizontal electroplating facility used for galvanizing steel sheets. In the figure, 1 is a steel plate, 2 is a plating tank for holding a plating solution, 17 is a plating solution in which zinc ions are dissolved, 18 is an anode, 3 is an energizing roll,
4 is a backup roll and 5 is a dumb roll. The energized roll 3 and the backup roll 4 which are respectively driven are sandwiched, and the steel sheet 1 traveling in the plating tank 2 becomes a cathode,
Zinc plating is performed on the surface of the steel sheet 1 by an electrolytic reaction in the plating solution 17.

[0005] When plating is performed, a part of the plating solution is taken out of the plating tank together with the steel plate and plated on the surface of the energizing roll 3. When plated on the energizing roll,
Non-uniform contact between the energizing roll 3 and the steel plate 1 causes defects such as defects called arc spots, and quality problems such as plating zinc peeling off from the energizing roll surface to generate pressing flaws.

In order to prevent the occurrence of these defects, as described in Japanese Utility Model Application Laid-Open No. 33264/1990, the surface of a current-carrying roll is constantly or intermittently ground with a grindstone or sandpaper and adhered to the roll surface. Removed metal.
However, the removed metal and the grinding material such as a grindstone used for grinding may fall between the steel plate and the energizing roll, causing arc spots and pressing flaws again. Need to be prevented from falling on the steel plate.

[0007] Japanese Utility Model Laid-Open No. 6-25360 discloses an apparatus for preventing the above-mentioned foreign matter from falling onto a steel plate. As shown in FIG. 4, the apparatus described in Japanese Utility Model Laid-Open Publication No. 6-25360 discloses an energizing roll 3 for horizontal continuous electroplating provided with a polisher 20. And a member 21 for receiving and stopping foreign matter scraped off by the doctor blade 6 and a sliding device 24 for sliding the doctor blade 6 in the width direction of the energizing roll 3. is there.

[0008] This apparatus removes foreign matters such as metal powder and abrasives generated by the grinding operation from the roll surface and prevents them from falling onto the steel sheet surface. Further, the doctor blade is slid in the width direction to prevent scratches on the roll surface due to the scraped foreign matter constantly contacting the same location on the roll surface.

[0009]

In electroplating, it is important to reduce Joule heat generated during plating in order to reduce plating power costs. For this purpose, it is important to shorten the length of the steel plate from the portion facing the anode to the portion in contact with the current-carrying roll, and a compact facility with this length reduced as much as possible is provided. Therefore, the space between the energizing roll and the dam roll is narrow.
In addition, it is necessary to perform various operations associated with the plating process in the vicinity of the plating tank. Therefore, it is desirable that the device installed around the energizing roll be as simple as possible.

However, the device described in Japanese Utility Model Laid-Open No. 6-25360 is a large device provided with the sliding device 24, and is not suitable as equipment installed in such a narrow space. Further, it is necessary to remove the foreign material from the receiving member in order to prevent the foreign material accumulated in the receiving member 21 from overflowing from the receiving member. However, since the operation is performed in a narrow place, the removal cannot be easily performed.

SUMMARY OF THE INVENTION It is an object of the present invention to improve the above-mentioned problems, to provide a compact apparatus and excellent workability, and to provide a roll adhering apparatus which can be used in various metal strip processing lines.

[0012]

Means for achieving the above-mentioned objects are as follows. (1) A hook-shaped adhered substance scraping member having a cross-sectional shape,
An apparatus for removing adhered material on a roll, wherein a bent portion having a leading end contacting the roll is formed at a lower end thereof, and an upper end of the scraping member is rotatably held.

(2) An apparatus for removing adhering substances on a roll, wherein the upper end of the scraping member of (1) is held so as to be relatively movable with respect to the roll in a direction perpendicular to the axis of the roll. (3) The device for removing adhering substances on a roll according to the above (1) or (2), wherein when the roll is an energizing roll, at least the roll contact portion of the scraping member is formed of an insulating member. (4) The roll removing device according to any one of (1) to (3), wherein the roll polishing device is provided in contact with the roll.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment of an attached matter removing apparatus according to the present invention will be described with reference to FIG. FIG.
FIG. 3 is a perspective view of a state in which the attached matter removing device of the present invention is applied to a current-carrying roll portion of a horizontal electroplating facility described in the related art.

In FIG. 1, reference numeral 3 denotes an energizing roll, 4 denotes a backup roll, 11 denotes a member for scraping off attached matter, and 16 denotes a polishing device. Hook-shaped adhered substance scraping member 11 in cross section
Is a shaft 1 rotatably held on both sides by bearings 12
0, a holding member 9 connected to the shaft 10, a bending member 7 functioning as a U-shaped gutter connected to the lower end of the holding member, and a tip connected to the bending member 7 is formed into a roll. And a blade 6 as a scraper that comes into contact with the blade. In this example, since the roll from which the deposit is to be removed is an energizing roll, the blade 6 is made of an insulating material.

The bearing 12 is mounted on a pedestal fitting 15, and can be slid horizontally on the pedestal fitting 15 by a spiral shaft 13. By the way, since the attached matter scraping member 11 is rotatable by the shaft 10 and the bearing 12 is movable by the helical shaft 13, the shaft 10 is moved in a direction orthogonal to the energizing roll 3. Thereby, the pressing force of the blade 6 against the roll 3 can be adjusted using the weight of the attached matter scraping member 11.

The material of the blade and the pressing force can be appropriately selected according to the properties of the deposits to be removed and the material of the roll. If necessary, the pressing force can be adjusted by means for changing the magnitude of the torque applied to the shaft 10, such as by providing a rod with a weight in the direction opposite to the roll 3.

Further, a roll polishing device 16 is provided in contact with the roll 3. With the above configuration, the deposit removed by the polishing device 16 is
And comes into contact with the roll of the blade 6 and is scraped off by the blade 6. The deposits scraped off by the blade 6 fall into the bending member 7 and do not fall on the steel plate. By imparting a gradient in the roll width direction to the bending member 7, that is, the bottom of the gutter, the fallen foreign matter can be moved to one end in the width direction. In the case where the liquid material is also scraped off by the blade 6 at the same time as the adhered substance, as in the case of removing the adhered substance from the energizing roll of electroplating, the adhered substance flows easily, and the removal of the adhered substance to the outside of the system is required. Can be easier. In the case of an energizing roll, the gradient is desirably about 10 ° in consideration of space restrictions.

Also, since the upper end of the scraping member is rotatable and the upper end is held so as to be relatively movable with respect to the roll, the upper end of the scraping member is moved to a position close to the roll. Accordingly, it is possible to adjust the scraping force and prevent the roll from being scratched by the weight of the scraping member. Further, since at least the roll contact portion of the scraping member is an insulating member, it is possible to prevent the plating current from leaking to an external device of the plating apparatus.

Further, when used in combination with a roll polishing apparatus, it is possible to more effectively remove deposits on the roll. In this embodiment, the object is an energizing roll, the attached matter scraping member is insulated, and a polishing device is installed. If it is not a current-carrying roll, no insulator is required. In addition, depending on the state of the attached matter, the attached matter scraping member can be used alone without using a polishing device.

[0021]

According to the present invention, although it is an inexpensive and compact device, it is possible to reliably and easily remove extraneous matter, and the workability is not impaired.

[Brief description of the drawings]

FIG. 1 is a perspective explanatory view showing an example of an embodiment in which the present invention is applied to a conductive roll deposit removing device for electroplating.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is a diagram illustrating a horizontal electroplating facility.

FIG. 4 is an explanatory view of a current-carrying roll foreign matter removing device for electroplating according to the prior art.

[Explanation of symbols]

1 ... steel plate, 3 ... energizing roll, 4 ... backup roll,
6 ... blade, 7 ... bending member, 9 ... holding member, 10 ...
Shaft, 11: attached member scraping member, 16: polishing device.

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Toshiyuki Murakoshi 1-1-2 Marunouchi, Chiyoda-ku, Tokyo Inside Nihon Kokan Co., Ltd. (72) Kinichi Kanno 1-1-2 Marunouchi, Chiyoda-ku, Tokyo Inside Nippon Kokan Co., Ltd. (72) Inventor Hiroaki Ikeda 1569-1, Owa, Setocho, Fukuyama City, Hiroshima Prefecture Inside Ikeda Machining Co., Ltd.

Claims (4)

[Claims] 1. A scraping member having a hook-shaped cross section and a bent portion having a lower end formed in contact with a roll at a lower end thereof, and an upper end of the scraping member rotatable. An apparatus for removing adhering substances on a roll, wherein the apparatus is held by a roll. 2. An apparatus according to claim 1, wherein an upper end of the scraping member is held so as to be relatively movable with respect to the roll in a direction perpendicular to the axis of the roll. apparatus. 3. A roll-adhered material according to claim 1, wherein when the roll is an energizing roll, at least a roll contact portion of the scraping member is formed of an insulating member. Removal device. 4. The roll polishing apparatus according to claim 1, wherein the roll polishing apparatus is provided in contact with the roll.
The apparatus for removing deposits on a roll according to any one of the above.