JP5033546B2 - Device for preventing leakage of liquid through rolls in electroplating equipment - Google Patents

Description

  The present invention relates to an apparatus for preventing liquid leakage from a roll penetration part of an electroplating apparatus.

In the electroplating line of a steel plate, plating is performed while passing between the electrodes installed above and below in the plating solution in a plating tank. A nozzle is installed to supply the plating solution into the plating tank, and the plating solution is always supplied to maintain the liquid level in the tank.
Japanese Patent Laid-Open No. 06-002196

  However, the plating solution supplied from the nozzle causes a flutter in the steel plate, and the upper electrode and the steel plate come into contact with each other, resulting in a spark flaw, which is a quality problem. In order to suppress the occurrence of this spark wrinkle, it is effective to suppress the fluttering of the steel sheet. For this purpose, it is desirable to install an elevating pinch roll. However, in order to install an elevating type pinch roll, it is necessary to make a hole in the plating tank, and the plating solution flows out of the tank through this hole, and there is a concern about non-plating due to a decrease in the liquid level.

  The object of the present invention is to penetrate the roll of an electroplating apparatus capable of suppressing the occurrence of spark wrinkles by adopting a structure in which the liquid does not leak from the plating tank even if an elevating pinch roll is installed in the plating liquid. A partial liquid leakage prevention device is provided.

  The first solving means of the present invention is an electroplating apparatus in which an upper electrode and a lower electrode are arranged in a plating tray that is long in the feeding direction of the metal strip, and the strip is fed while being supported by a support roll. A pinch roll provided in a state where a long hole is provided on the both side walls of the tray, immediately above the hole through which the shaft of the support roll passes, and the band plate is sandwiched between the long hole and the upper side of the support roll; Bearing housings provided at both ends of the pinch roll shaft are rotatably fitted to lifting means that can be lifted and lowered by a power source, and a position that is located inside the plating tray by the pinch roll shaft. An upper chock, and a deformable cylinder attached between the upper chock and the inner wall of the tray so as to cover the elongated hole.

  The second solving means of the present invention is, in addition to the first solving means, mounted on the inner wall of the tray between the upper and lower brackets protruding from the upper and lower sides of the elongated hole, and the pinch roll This includes a vertically extending guide bar at a position sandwiching the shaft in the horizontal direction, and the upper chock is slidably inserted into the guide bar.

  The third problem solving means of the present invention, in addition to the second solving means, is an upper chock that is rotatably fitted at a position located inside the plating tray with the pinch roll shaft, and the upper chock and the tray. A deformable cylinder attached to the inner wall so as to cover the elongated hole, a lower chock that is rotatably fitted at a position located inside the plating tray by the shaft of the support roll, and And a deformable cylinder attached so as to cover the shaft through hole between the lower chock and the inner wall of the tray.

  According to the present invention, even when a flapping force is applied to the metal plate by the plating solution supplied from the nozzle, the metal plate is sandwiched between the pinch roll and the support roll and does not flicker. For this reason, it was decided to contribute to the improvement of quality by suppressing the occurrence of spark wrinkles. Moreover, the plating solution in the tray does not leak into the tank from the long hole of the tray by the deformable cylinder.

  Since the deformable cylindrical body is attached to the roll, it can easily cope with the deformation accompanying the raising and lowering of the pinch roll. Moreover, since the chock is provided, the deformable cylinder is securely attached to the roll, and the roll can be rotated smoothly. Furthermore, when the chock is inserted into the guide rod so as to be slidable in the vertical direction, the deformation of the deformable cylinder due to the rotation of the roll and the deformation of the deformable cylinder due to the pressure of the liquid can be suppressed.

Embodiments of the present invention will be described below based on an embodiment shown in the drawings.
In the electroplating apparatus shown in FIG. 1, a plating tray 2 is provided inside a plating tank 1 that is long in the feeding direction of the steel strip A, and an upper electrode B1 and a lower electrode B2 are arranged in the plating tray. The steel strip is fed while being supported by the support roll 3.

  In FIGS. 2 and 3, long holes 1a and 2a which are long in the vertical direction are provided on both side walls of the tank 1 and the tray 2 and directly above the round hole through which the shaft of the support roll 3 passes. And the pinch roll 4 is provided in the state which pinches | interposes the steel plate A on the said support roll 3 upper side. The bearing housings 5a provided at both ends of the pinch roll shaft are moved up and down by the lifting means 5 by a power source including the fluid piston cylinder 5c.

  An upper chock 6a is rotatably fitted at a position located inside the plating tray 2 on the axis of the pinch roll 4. Between the upper chock and the inner wall of the tray, an upper deformable cylindrical body 7a made of an elliptic frustum-shaped rubber bellows is attached so as to cover the elongated hole.

  In FIG. 4, brackets 8 and 8 are projected from the inner wall of the tray 2 on the upper side and the lower side of the long hole 2a. A vertically long guide bar 9 is attached to the bracket between the upper and lower sides, and is positioned in a state where the axis of the roll is sandwiched in the horizontal direction. The upper chock 6a is inserted into the guide bar 9 so as to be slidable in the vertical direction.

  2 and 4, the lower chock 6 b is rotatably fitted at a position located inside the plating tray with the shaft of the support roll 3. A lower deformable cylindrical body 7b made of a cylindrical bellows is attached so as to cover the shaft-through round hole between the lower chock and the inner wall of the tray. The lower chock is inserted into the guide bar 9.

  The operating state will be described above. In a state where the strip steel plate A is being fed, the support roll 3 rotates in a free state while supporting the steel plate and by frictional force with the support roll 3. The pinch roll 4 is held in contact with the upper surface of the steel plate by the elevating means 5 in a state where it can move up and down in the long hole, and normally rotates in a free state by frictional force with the upper surface of the steel plate.

  At this time, even if a flapping force is applied to the steel sheet by the plating solution supplied from the nozzle, the steel sheet is sandwiched between the pinch roll 4 and the support roll 3 and does not flicker. And the plating solution in a tray does not leak into the tank 1 from the long hole 2a of the tray 2 by the bellows 6a, 6b.

  In this way, complete sealing (leakage prevention) is performed in the plating solution. Since the rubber bellows 7a is attached to the roll, it is possible to easily cope with the deformation accompanying the raising and lowering of the pinch roll 4. Further, since the chocks 6a and 6b are provided, the bellows is securely attached to the roll, and the roll can be smoothly rotated. Further, since the chock 6a is inserted into the guide rod 9 so as to be slidable in the up and down direction, twisting of the bellows due to rotation of the roll and deformation of the bellows due to liquid pressure can be suppressed.

  The present invention is not limited to the examples and embodiments described above, and includes various modifications without departing from the scope and scope of the claims.

  The present invention is utilized for a roll penetration portion liquid leakage prevention device of an electroplating apparatus.

It is a schematic front view of one Example of this invention. It is an expansion vertical sectional view of one example of the present invention. FIG. 3 is a left side view of FIG. 2. FIG. 3 is a cross-sectional view taken along the line Y4-Y4 of FIG.

Explanation of symbols

A band steel plate 1 plating tank 1a long hole 2 plating tray 2a long hole 3 support roll 4 pinch roll 5 lifting means 5a bearing 5b lifting guide 5c fluid piston cylinder 6 chock 7 bellows 8 bracket 9 guide rod

Claims (3)

In the electroplating apparatus in which the upper electrode and the lower electrode are arranged in the plating tray long in the feeding direction of the metal strip, and the strip is fed while being supported by the support roll,
On both side walls of the tray, a long hole is provided immediately above the hole through which the shaft of the support roll passes,
A pinch roll provided through the elongated hole and sandwiching the strip on the upper side of the support roll;
Elevating means in which bearing housings provided at both ends of the pinch roll shaft are moved up and down by a power source;
An upper chock that is rotatably fitted at a position located inside the plating tray on the pinch roll shaft,
An apparatus for preventing liquid leakage from a roll penetrating part of an electroplating apparatus, comprising: a deformable cylinder attached so as to cover the elongated hole between the upper chock and the inner wall of the tray. Brackets projecting on the upper and lower sides of the long hole on the inner wall of the tray;
A guide rod which is attached between the upper and lower brackets and which is vertically sandwiched between the pinch roll shafts in a horizontal direction;
2. The apparatus of claim 1, wherein the upper chock is inserted into the guide rod so as to be slidable up and down. An upper chock that is rotatably fitted at a position located inside the plating tray on the pinch roll shaft,
A deformable cylinder attached so as to cover the elongated hole between the upper chock and the inner wall of the tray;
A lower chock that is rotatably fitted at a position located inside the plating tray on the axis of the support roll;
The roll penetration part liquid leakage prevention of the electroplating apparatus of Claim 2 including the deformable cylinder attached so that a shaft through-hole might be covered between this lower chock and the inner wall of the said tray apparatus.

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