KR100920602B1 - An apparatus for removing the oxide coat on an anode for strip eletroplating - Google Patents

Abstract

An apparatus for removing an oxide film formed on an anode in a plating bath is provided.

The apparatus for removing an oxide film of the anode for electroplating of the steel sheet includes a base detachable from a conductive roll disposed in an electroplating bath; and a driving force installed in front of the base and in close contact with the anode during rotation of the conductive roll. A brush roll having an anode contact portion for generating a; and a magnetic screw roll provided to move the film installed and removed on the base to both sides of the conductive roll to one side of the brush roll to rotate as the brush roll. 1 oxide film removing unit; And a second oxide film removing unit having a plurality of scrapers installed on the base to one side of the first oxide film removing unit and air spray nozzles disposed between the scrapers.

Therefore, according to the present invention, the nickel oxide film generated on the anode in the plating bath when the electroplating component of the steel sheet is changed from zinc-nickel (Zn-Ni) to pure-zn (silver). It provides an effect that can be removed quickly and easily without extra work of the plating operation of the node.

Steel plate, steel plate electroplating, zinc plating, zinc-nickel alloy plating, anode, oxide film, oxide film removing device

Description

AN APPARATUS FOR REMOVING THE OXIDE COAT ON AN ANODE FOR STRIP ELETROPLATING}             

Figure 1 is a schematic perspective view showing the zinc-nickel alloy electroplating of the general steel sheet and the oxide film formed on the surface of the anode in use

Figure 2 is a side configuration diagram showing an oxide film removing apparatus of the anode for electroplating a steel sheet according to the present invention

Figure 3 is a planar structure diagram showing an oxide film removing device of the anode for electroplating of the present invention steel sheet

Explanation of symbols on the main parts of the drawings

1 .... anode removal device 10 .... base

30 .... 1st oxide film remover 32 .... anode contact

34 .... Brush roll 50 .... Second oxide film remover

52 .... scraper 54 ...,. Air Spray Nozzle

100 .... Plating bath 110 ... Anode

120 .... conductive roll 130 .... oxide film

The present invention relates to an apparatus for removing an oxide film formed on the anode in the plating bath during the electroplating of the steel sheet, and more specifically, the electroplating component of the steel sheet is pure zinc-zinc (Zn-Ni) Oxidation of the electroplating anode of the steel plate, which can be removed quickly and easily, without the cumbersome work of drawing the anode out of the plating bath when the nickel oxide film generated on the anode inside the plating bath is changed to Pure-Zn). It relates to a film removing device.

In general, the surface of the steel sheet is electroplated with pure zinc (Pure-Zn) or zinc-nickel alloy (Zn-Ni) and the like, the electroplating of such a steel sheet makes the surface of the steel sheet beautifully, In order to increase the corrosion resistance of the steel sheet and to strengthen the wear resistance, and to provide other necessary surface properties if the consumer desires, such an electroplating method is to put an electrode in an electrolyte solution (solution) containing metal ions. When a current is applied, metal ions are discharged from the cathode and precipitated, and a thin film of metal is formed on the surface of the plating material placed on the cathode by using the same. The electroplating of such a steel sheet is shown in FIG.

That is, as shown in Figure 1, the anode 110 of the + electrode in the plating cell (100) filled with the electrolyte is arranged on the bridge 112, and at regular intervals- The conductive roll 120 having the band 122 and the steel sheet S wound and transported in close contact is arranged to be partially immersed in the electrolyte of the plating bath 100, so that the metal ion of the anode is plated on the surface of the steel sheet. The anode 110 is made of, for example, pure zinc (Pure-Zn) or zinc-nickel alloy (Zn-Ni), and the like, and is not shown in detail in the drawing, but the electroplating of the steel sheet. At the time, a plurality of plating baths 100 are installed so that the front and back surfaces are electroplated while the steel sheet is continuously transferred to a feed roll or the like.

At this time, pure zinc plating steel (Pure-Zn Plating Strip) is used for home appliances or general purpose, but its main purpose is to increase the corrosion resistance that can withstand corrosion, but zinc-nickel alloy strip (Zn-Ni Plating Strip) Silver is mainly used as automotive steel plate, and its main purpose is to improve weldability with other products. In the actual line operation, it is periodically used in pure zinc plating (Pure-Zn Plating) according to demand. A mode change occurs that changes from zinc-nickel alloy plating (Zn-Fe Plating) or zinc-nickel alloy plating (Zn-Ni Plating) to pure-Zn Plating.

By the way, in performing the electroplating operation of the steel plate in parallel with the pure zinc plating and zinc-nickel alloy plating in a plurality of plating bath 100, as shown in FIG. The nickel oxide film 130 formed on the node 110 should be removed from time to time.

However, in the related art, as shown in FIG. 1, the anode 110 is pushed out to the outside of the plating bath 100 using the pusher 140, and then the oxide film 130 formed on the anode surface is brushed or the like. Since the oxide film 130 is removed by a tool, scraper, etc., at this time, if the oxide film is removed only by incomplete manual work, the pure zinc anode has a large amount of nickel oxide film remaining on the surface. It takes a lot, especially in the case of plating streaks due to the incorporation of nickel components or a small amount of nickel components are generated in the plating components during pure zinc plating, plating defects of the steel sheet such as uneven plating surface color easily occurs.

The present invention has been made to solve the various problems as described above, the object of the present invention is that the zinc in the plating bath when the electroplating of the steel sheet is changed from zinc-nickel (Zn-Ni) to pure-zn (Pure-Zn) An object of the present invention is to provide an oxide film removal apparatus for an electroplating anode of a steel sheet, which allows the oxide film generated on the anode to be quickly and easily removed without the troublesome work of drawing the anode from the plating bath to the outside.

The present invention as a technical configuration for achieving the above object, the base detachable to the conductive roll disposed in the plating bath for electroplating; And,
A brush roll provided at the front of the base and having an anode contact portion that is in close contact with the anode to generate a driving force when the conducting roll is rotated, and a film installed and removed from the base to one side of the brush roll to rotate as the brush roll. A first oxide film removing unit having a magnet screw roll provided to move the to both sides of the conductive roll; And,
A second oxide film removing unit including a plurality of scrapers installed on the base to one side of the first oxide film removing unit, and air spray nozzles disposed between the scrapers;
By providing an oxide film removal apparatus for the electroplating anode of the steel sheet comprising a.

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

2 is a side configuration diagram showing an oxide film removing apparatus of the electroplating anode of the steel sheet according to the present invention, Figure 3 is a planar structural diagram showing an oxide film removing apparatus of the anode for electroplating the steel sheet of the present invention. .

As shown in Fig. 2 and Fig. 3, the oxide film removing apparatus 1 of the anode for electroplating the steel sheet of the present invention is largely divided into the base 10 and the first and second oxide film removing portions 30 ( 50), these components 10, 30, 50 will be described in more detail as follows.

First, the base 10 of the oxide film removing device 1 of the anode for electroplating of the steel sheet of the present invention is detached to the conductive roll 120 disposed in the plating bath 100 for electroplating, in FIG. As shown, the base 10 is attached to and detached from the conductive roll 120 as a fastening bolt 10a that is fastened to a bolt hole (not shown) formed in the roll steel inside the rubber insulation portion of the conductive roll 120. In order to remove the oxide film 130 on the anode 110, the conductive roll 120 is mounted on the conductive roll 120.

At this time, the base 10 is a lower base 10b detachably attached to the side of the conducting roll 120 as a fastening bolt 10a, and a vertical base 10c and a vertical base 10c fixedly connected thereto. It consists of the upper base 10d connected between the vertical bases 10c of both sides in the width direction of a conductive roll between them, and the scraper 52 and the air spray nozzle 54 which are demonstrated next are the said upper base 10d. It is fixed to the bottom of the).

Next, FIG. 2 and FIG. 3 show the first oxide film removing unit 30 of the oxide film removing device 1 of the anode for electroplating a steel sheet according to the present invention, which is the first oxide film of the present invention. The removal part 30 is equipped with the brush roll 34 and the magnet screw roll 36 again.

That is, the brush roll 34 is in close contact with the anode 110 to generate a driving force when the conductive roll 120 rotates, that is, when the conductive roll rotates counterclockwise. The magnetic screw roll 36 is disposed on one side of the brush roll so as to rotate as the brush roll 34, and the conductive film 120 is removed from one side of the brush roll 34. It is installed to move to both sides of the.

2 and 3, the brush roll 34 and the magnetic screw roll 36 of the first oxide film removing unit 30 are in front of the vertical base 10c of the base 10. The shafts of the brush roll and the magnetic screw roll are rotatably supported between the bearing blocks 40 respectively installed on the fixed plate 38 fixedly connected horizontally.

On both sides of the brush roll 34, an anode contact portion 32 having an enlarged diameter is integrally formed, and a shaft of the brush roll 34 and the magnetic screw rolls 34 and 36 is formed on the shaft. As the pulleys 44 are fastened to each other, and as shown in FIG. 2, the conductive roll 120 rotates, the anode contact portion 32 of the brush roll 34 is rotated. When the anode contact portion 32 is rotated while being in close contact with the node 110, the brush roll 34 is integrally supported by the bearing block 40 to rotate, and the magnetic screw roll 36 is also driven to rotate.

On the other hand, as shown in Figure 3, the magnetic screw (36a, 36b) of the magnetic screw roll 36, the screw is formed in the opposite direction with respect to the center, so that the brush roll 34 is an anode When the portion of the oxide film 130 of 110 is removed, the oxide film 130 of the metal component is attached to the magnetic screw roll 36 and is moved to both sides of the conductive roll 120 when the magnetic screw roll 36 is rotated. In this case, a cover 46 covering the magnet screw roll 36 is integrally formed on the fixed plate 38.

As a result, when the initial conduction roll 120 is driven to rotate as the main motor on the outer side of the plating bath 100 not shown in the drawing in the apparatus 1 of the present invention, the rotational force of the conduction roll 120 becomes the anode 110. Driving force is generated by rotating the brush roll 34 as the anode contact portion 32 of the brush roll in close contact with the brush roll, and the driving force of the brush roll 34 is a magnetic screw roll as the belt 42 and the pulley 44. 36, the brush roll 34 and the magnetic screw roll 36 of the first oxide film removing unit 30 are rotationally driven.

Next, FIG. 2 and FIG. 3 show the second oxide film removing unit 50 of the oxide film removing device 1 of the anode for electroplating a steel sheet according to the present invention, which is the second oxide film of the present invention. The removing unit 50 includes a plurality of scrapers 52 disposed on the base 10 to one side of the first oxide film removing unit 30 and air spray nozzles 54 disposed between the scrapers. Doing.

That is, as shown in Figure 2, the scraper 52 of the second oxide film removing unit 50, the buffer block 56 is fixed to the base 10 as a spring 58 so as to operate the buffer. Is installed, the fixing block 56 is fixed to the lower portion of the upper base (10d) of the base 10, the spring 58 is seated in the seating portion (56a) formed in the fixing block 56, Then, the head 52a portion of the scraper 52 is supported as the fixing bolts 58a and 58b so that the scraper 52 is in close contact with the oxide film 130 on the anode 110 while being in close contact with the conductive roll. When the 120 is rotated, the anode oxide film 130 or the fine residual film portion is removed.

As shown in FIG. 3, the air spray nozzles 54 extend in the longitudinal direction of the conductive roll in the air supply pipe 60 fixed to the lower portion of the upper base 10d of the base 10. It is disposed at the end of the air pipe 62.

At this time, as shown in Figure 3, the air supply pipe 60 is divided into two parts, each air hose 60a is connected to facilitate the air supply even during the rotational drive of the device (1) of the present invention, in particular the The scraper 52 and the air spray nozzle 54 are configured to be inclined to both sides with respect to the center line of the conductive roll 120.

Referring to the operation of the present invention made in the above configuration in detail as follows.

As shown in FIGS. 2 and 3, when the pure zinc coating process is performed after the zinc-nickel alloy electroplating of the steel sheet, the nickel component formed on the anode 110 disposed in the electroplating bath 100 is used. The apparatus for removing the oxide film of the anode for electroplating the steel sheet of the present invention, which allows the oxide film 130 to be removed quickly and effectively without drawing the anodes 110 to the outside of the plating bath 100. As follows.

First, the operator performs the zinc-nickel alloy operation during the electroplating of the steel sheet, and when performing the pure zinc plating operation using the same plating bath 100, by checking the oxidation film state of the anode (110) The apparatus 1 is fixed by fixing the base 10 of the apparatus 1 of the present invention as a fastening bolt 10a in the plating roll 100 of the anode 110 on which the film 130 is formed. It is arranged on the conductive roll (10).

Next, the operator operates the main drive motor (not shown) connected to the shaft portion of the conductive roll 120 shown in FIG. 1 to the outside of the plating bath to move the conductive roll 10 in the counterclockwise direction as shown in FIG. 2. In this case, the rotational speed of the conductive roll 10 is preferably maintained at a low speed.

Therefore, the scraper 52 of the second oxide film removing unit 50 of the device 1 of the present invention is removed by scraping the oxide film 130 on the anode 110 in close contact with the elastic force of the spring 58. In this case, as shown in FIG. 3, in the air spray nozzle 54 disposed between the scrapers 52, when the valve v is opened, the air passes through the hose 60a, the air supply pipe 60, and the air pipe 62. Sending the oxide film removed as the scraper 52 disposed in a mountain shape while being sprayed through to both sides of the conducting roll 120 to cleanly remove the oxide film on the anode 110.

Next, as shown in FIG. 2, the scraper 52 is first removed while being in close contact with the oxide film 130 on the anode 110, and then the brush roll 34 of the first oxide film removal unit 30 according to the present invention is removed. As the anode contact portion 32 is provided to be in close contact with the anode 110 and rotates, the oxide film 130 on the anode 110 is secondarily removed.

At this time, the brush roll 34 and the magnet screw roll 36 to which the pulleys 44 are fastened as the belt 42 are integrally rotated, and the anode oxide films 130 removed as the brush roll 34 are mutually rotated. The magnetic screws (36a, 36b) formed in the opposite direction is moved to both sides of the conductive roll 120, the cover 46 is disposed on the magnet screw roll 36 side is removed by the brush roll (36) The oxide films 130 are easily post-processed. The magnet screw roll 36 also moves the oxide films 130, but attaches fine oxide powders of the heavy metal component removed as the brush rolls 34 by magnetic force. As the fine oxide powder is scattered into the air, it effectively prevents pollution of the workplace.

Of course, in the drawings, but not separated by a separate reference, the brush roll 34 and the magnetic screw roll 36 is provided with a brush on the roll body of the shaft portion is integrated, or the magnet is mounted on the roll body in the form of a screw Or the magnetic rod is processed into a screw form to provide a screw roll (36).

Next, as shown in FIG. 2, the conductive roll 120 rotates so that the brush roll 34 portion moves past the one side anode 110 to the scraper 52 and the brush roll on the opposite anode 110. 34) are in close contact with each other to effectively remove the oxide film 130 on the anode 110, and when the removal of the oxide film is completed, the operator removes the base 10 of the device 1 from the conductive roll 120. The extrapolation is performed to perform electroplating of the steel sheet.

Accordingly, according to the present invention, the oxide film removing device 1 of the anode for electroplating a steel sheet according to the present invention primarily removes the oxide film 130 on the anode 110 as air injected into the scraper 52, Immediately afterwards, the brush roll 34 is brought into close contact to remove the oxide film 130 on the anode, thereby detaching the device 1 from the conduction roll 120 only when necessary, without removing the plating tank of the anode 110. It is possible to quickly remove the oxide film 130 on the anode (110).

As described above, according to the apparatus for removing the oxide film of the anode for electroplating of the steel sheet according to the present invention, when the electroplating component of the steel sheet is changed from zinc-nickel (Zn-Ni) to pure-zn, zinc- in the plating bath- The advantage is that the oxide film generated on the anode can be removed very quickly and effectively without extra work of the plating tank of the anode.

Therefore, the nickel oxide film on the anode in use can be easily removed periodically if necessary without removing the anode on the plating bath bridge, and plating of the steel sheet such as poor plating surface color and plating streaks on the coated steel sheet It is effective in preventing defects in advance and improving the plating quality and manufacturing productivity of the steel sheet.

In addition, the dust and heavy metal dust generated during the removal of the existing anode oxide film is prevented to provide an excellent effect of preventing air pollution in the workplace.                     

While the invention has been shown and described with respect to specific embodiments thereof, it will be apparent to those skilled in the art that various changes and modifications can be made without departing from the spirit or scope of the invention as set forth in the claims below. I would like to know that those who have knowledge of this can easily know.

Claims (3)

A base 10 detachable from the conductive roll 120 disposed in the plating bath 100 for electroplating; and The brush roll 34 and the brush roll 34 which are installed in front of the base 10 and have an anode contact portion 32 which is in close contact with the anode 110 when the conductive roll is rotated to generate a driving force. The first oxide film removing unit 30 having a magnetic screw roll 36 provided to move the coating film installed on the base 10 to both sides of the conductive roll 120 so as to rotate as one side of the brush roll. ); And, The second oxide film agent having a plurality of scrapers 52 provided on the base 10 to one side of the first oxide film removing unit 30 and air spray nozzles 54 disposed between the scrapers. Rejection 50; Oxidation film removal apparatus of the anode for electroplating of a steel sheet comprising a. The bearing of claim 1, wherein the shaft of the brush roll 34 and the magnetic screw roll 36 of the first oxide film removing unit 30 is mounted on a fixed plate 38 connected to the front of the base 10. Each supported by a block 40, On both sides of the brush roll 34, the anode contact portion 32 having an enlarged diameter is integrally formed, and the brush roll 34 and the shaft portion of the magnetic screw roll 36 are fastened as a belt 42. Each of the pulleys 44 are installed to remove the oxide film of the anode for electroplating steel plate, characterized in that the brush roll and the magnetic screw roll is configured to rotate the drive while the anode contact portion is in close contact with the anode during the rotation of the conductive roll. Device. The method of claim 1, wherein the scraper 52 of the second oxide film removing unit 50 is installed in the fixing block 56 fixed on the base 10 as a spring 58, the buffer operation, The air injection nozzles 54 are disposed at the ends of the plurality of air pipes 62 connected to the air supply pipe 60 installed on one side of the base 10, The scraper (52) and the air spray nozzle (54) is an oxide film removal apparatus of the anode for electroplating steel sheet, characterized in that arranged inclined to both sides with respect to the center line of the conductive roll (120).

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