JPH09143663A - Device for removing excess plating liquid for hot dip metal coating - Google Patents

Abstract

PROBLEM TO BE SOLVED: To well remove the excess plating liquid sticking to the side end faces of a metal plated sheet subjected to metal plating. SOLUTION: This removing device is constituted to remove the excess plating liquid sticking to the side end faces of the metal plated sheet 2 which is passed through a plating bath 1 and is pulled upward. Oscillating bars 5 which are vertically long are freely oscillatably hung down and held in the thickness direction of the metal plated sheet 2 in the positions along the side end faces of the metal plated sheet 2. Removing means 3 which face the side end faces of the metal plated sheet 2 and remove the excess plating liquid by utilizing air pressures and follow-up implements 4 which engage with the side ends of the metal plated sheet 2 and follow up the oscillation in the thickness direction of the metal plated sheet 2 are mounted at these oscillating bars 5.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for removing a surplus plating solution for hot metal plating, and more specifically, it aims to favorably remove a surplus plating solution adhering to a side end surface of a metal-plated metal plate. It is related to technology.

[0002]

2. Description of the Related Art Conventionally, an apparatus for removing a surplus plating solution of molten metal plating which sucks and removes a surplus plating solution adhering to a side end surface of a metal plating plate 2 which is passed upward through a plating bath 1 As shown in FIG. 6, a substantially V-shaped follower roller C that abuts on a side end surface of the metal plating plate 2 on a base body B movably provided on the fixed rail A, and a side end portion of the metal plating plate 2 are provided. Nozzle 3 for removing excess plating solution that has adhered
Is attached, the wire 11 is attached to the base B, the weight 13 is attached to the tip of the wire 11, and the guide roll 9 on the base B side is engaged with the fixed rail A. The urged substrate B is urged toward the metal plating plate 2 side, the follower roller C abuts on the side end surface of the metal plating plate 2, and the metal plating plate 2 passing through the plating bath 1 and pulled up is the plate surface. Following the meandering in the substantially parallel direction, the excess plating solution adhering to the side end portion of the metal plating plate 2 is sucked and removed by the removing means 3, for example. In the figure, 7 is a sink roll, which guides the metal plate. Reference numeral 16 is an air nozzle, which is disposed on both sides of the metal plating plate 2 and removes excess plating solution on both sides.

[0003]

However, in the above-mentioned conventional structure, the meandering in the direction along the plate surface of the metal plating plate 2 is followed, but the movement in the plate thickness direction is difficult to follow. Therefore, there is a problem that the surplus plating solution attached to the side end surface of the metal plating plate 2 cannot be removed well. In this way, if the excess plating solution on the side end face is not removed, the metal plating plate 2 itself becomes a downgrade product, and the thickness of the metal plating plate 2 on the side end face becomes thicker, so that the metal plating plate 2 (strip) is coiled. When the metal-plated plate 2 having a predetermined length is wound, the weight and the length are insufficient. In addition, since it may cause a defective shape, the number of steps for correcting them may increase.

The present invention has been made in view of the above problems, and an object thereof is to satisfactorily remove an excess plating solution adhering to a side end surface of a metal-plated metal-plated plate. Another object of the present invention is to provide an apparatus for removing excess plating solution for hot metal plating.

[0005]

According to a first aspect of the present invention, there is provided a removing device for removing an excessive plating solution a adhering to a side end surface of a metal plating plate 2 which is passed through a plating bath 1 and pulled upward. In the movement path of the plated metal plate 2, a vertically long rocking bar 5 is suspended and held in the plate thickness direction of the metal plated plate 2 at a position along the side end surface of the metal plated plate 2 so as to be swingable. A removing means 3 facing the side end surface to remove the excess plating solution a by using air pressure, and a metal plating plate 2
And a follower 4 that engages with the side end of the metal plated plate 2 in the thickness direction of the metal plated plate 2 and is attached to the swing bar 5.

According to a second aspect of the present invention, the removing means 3 and the follower 4 are arranged close to each other. In claim 3, the removing means 3 is a suction nozzle 3y that sucks the excess plating solution a with the suction of air, or an air straightening plate 3x that removes the excess plating solution a by using the blowing force of air. The suction nozzle 3y and the air rectifying plate 3x are replaceable with each other.

According to the first aspect, the follower 4 attached to the rocking bar 5 is engaged with the side end of the metal plating plate 2 so that the rocking bar 5 rocks in the thickness direction of the metal plating plate 2. The removing means 3 can always follow the side end surface of the metal plating plate 2, and the excess plating solution a adhering to the side end surface of the metal plating plate 2 can be satisfactorily removed. According to the second aspect, the removing means 3 is located near the follower 4, and the followability can be further enhanced.

In the third aspect, the suction nozzle 3y and the air rectifying plate 3x can be selectively used according to the type of the metal plating solution, and the entire apparatus is replaced every time the type of the metal plating solution is different. There is an advantage that only the removing means 3 needs to be replaced, the workability can be improved, and the apparatus can be simplified.

[0009]

Embodiments of the present invention will be described below in detail with reference to the drawings. A long metal plate is guided by the sink roll 7 and immersed in the plating bath 1 for metal plating, and the metal plating plate 2 passes through the plating bath 1 and is pulled upward to finish the drying process and the like. It is taken up by a take-up roll. In this case, the metal plating plate 2 pulled up from the plating bath 1 has the plating solution adhered not only to the central portion but also to the side end portions. The plating solution adhering to the plate surface of the metal plating plate 2 is provided on both surfaces of the metal plating plate 2 and is caused by the blowout of pressure air from the air nozzles 16 arranged in a line with respect to the plate surface. The so-called air knife is used to remove the plating solution and allow it to flow down into the plating bath 1. By the way, the surplus plating solution a adhering to the side end of the metal plating plate 2 is also removed, and its configuration will be described in detail below.

On both sides of the moving path of the metal plating plate 2,
Fixed rails 8, 8 are provided. The movable base 10 is provided with guide rolls 9 ...
Is engaged with the fixed rail 8 so that the moving base 10 can be moved in the direction along the plate surface of the metal plating plate 2. The upper edge of the fixed rail 8 is formed in an inverted V-shape to prevent the accumulation of dust on the upper edge.

The moving substrate 10 is provided with a removing means 3 for removing the surplus plating solution a and a follower 4 for following the metal plating plate 2 from a predetermined moving path. Also,
A wire 11 is attached to the moving base 10, and the wire 1
1 is wound around a roller 12 and a weight 13 is attached to an end portion thereof. Then, the gravity of the weight 13 acts on the moving base 10 via the wire 11 to urge the moving base 10 toward the metal plating plate 2 side, and the V-shaped roller 4 a of the follower 4 is moved.
Contact the side end surface of the metal plating plate 2, and thus the V-shaped rollers 4a, 4a contact from both sides of the metal plating plate 2,
The removing means 3 and 3 can follow the movement of the metal plating plate 2 in the direction along the plate surface.

Further, the following constitution can be followed for the fluctuation of the metal plating plate 2 in the plate thickness direction. That is, the shaft 6 is attached to the back side of the moving base 10 via a stay so that the axis of the shaft 6 is substantially parallel to the direction along the plate surface of the metal plating plate 2, and the swing bar 5 is attached to the shaft 6. Is swingably suspended and held. As described above, the configuration for holding the shaft 6 on the movable base 10 can be variously changed in design. The removing means 3 is attached to the lower end of the rocking bar 5, and is slightly above the removing means 3, specifically about 150.
The V-shaped roller 4a of the follower 4 is attached at an interval of about mm.

Therefore, the swing bar 5 swings around the shaft 6 to swing in the plate thickness direction of the metal plating plate 2, and the removing means 3 and the V-shaped roller 4a attached to the swing bar 5 are provided. Sufficiently follows the movement of the metal plating plate 2 in the plate thickness direction. In this way, the removing means 3 can always follow the side end portion of the metal plating plate 2, and the excess plating solution a attached to the side end surface of the metal plating plate 2 can be removed well. In such a case, the removing means 3 and the V-shaped roller 4
a is in close proximity and further enhances the followability.

As shown in FIG. 2, the removing means 3 is, for example, a suction nozzle 3y, which is formed in a cylindrical body having both ends open, and an inclined surface 3a is formed in the air introducing portion, and the air is introduced along the inclined surface 3a. The ejected air causes the ejected air to suck the air from the metal plating plate 2 side to remove the excess plating solution a adhering to the metal plating plate 2. The cylindrical body of the suction nozzle 3y is made of stainless steel, and has been subjected to surface hardening treatment and smoothing treatment so that the excess plating solution a is prevented from adhering and the adhering substance can be easily removed. is there.

The V-shaped roller 4a of the follower 4 is provided with a pair of guide plates 4b, 4b so that the end portions of the metal plated plate 2 can be easily guided. Further, air is blown to the V-shaped roller 4a from an air path so as to cool the V-shaped roller 4a.
In FIG. 1, arrow a indicates the air supply. By the way, in the case of performing aluminum zinc plating on an iron plate, the viscosity of the plating solution is low to remove the surplus plating solution a adhering to the side end portion of the metal plating plate 2, and therefore the suction nozzle 3y is used. The excess plating solution a is sucked and removed by such an aspirator, while the excess plating solution a adhering to the side end portion of the metal plating plate 2 is removed when zinc plating is performed on the iron plate. In addition, since the viscosity of the plating solution is high, suction removal by the suction nozzle 3y becomes somewhat difficult. Hereinafter, the surplus plating solution a is added to the air straightening plate 3
The configuration to be removed by x will be described in detail.

FIG. 3 shows a schematic view in which an air rectifying plate 3x is used instead of the suction nozzle 3y. As shown in FIG. 4, the air straightening plate 3x is provided with a vertical surface 3f that is substantially orthogonal to the plate thickness direction of the metal plating plate 2.
Are held at a predetermined distance d from the metal plating plate 2. The lower portion of the vertical plate having the vertical surface 3f is curved in a direction away from the side end surface of the metal plating plate 2 toward the lower side. Further, a wind receiving plate 3d is provided in the center of the vertical plate in the width direction so as to be substantially orthogonal to the vertical plate. The wind receiving plate 3d is held substantially on the same surface as the metal plating plate 2, and receives the pressure air blown out from the air nozzle 16 like the metal plating plate 2, so that the side end surface of the metal plating plate 2 is received. At the air nozzles 16 and 1
This prevents the pressure air blown from 6 from colliding with the side end surface portion of the metal plating plate 2 to form a turbulent flow and roughening the plating surface of the end portion of the metal plating plate 2 including the side end surface.

However, the pressure air blown from the air nozzles 16 and 16 at an angle of about 7 ° downward from the horizontal with respect to the plate surface of the metal plating plate 2 is at the side end of the metal plating plate 2. In the vicinity, the vertical plane 3f of the vertical plate and the curved surface 3e below the vertical plane 3f guide the metal to the metal by the pressure air passing a predetermined distance d set with respect to the side end surface of the metal plating plate 2. The excess plating solution a on the side end surface of the plating plate 2 is blown away to be removed, and the pressurized air and the blown off excess plating solution a are guided by the curved surface 3e below the vertical plate, and the metal plating plate 2
The gradual separation from the side end surface of the is to remove the excess plating solution a stably. Further, the pressure air blown away from the side end surface of the metal plating plate 2 from the air nozzles 16 and 16 hits both sides of the wind receiving plate 3d, and on the side end surface side of the metal plating plate 2, the inner surface below the vertical plate. Guided by the curved surface 3e on the side, the pressure air is guided downward so as to gradually separate from the side end surface of the metal plating plate 2. In this way, the surplus plating solution a on the side end surface of the metal plating plate 2 is satisfactorily removed. The air rectifying plate 3x may have a simple structure in which the wind receiving plate 3d is attached to the vertical plate and the curved surface 3e is formed below the vertical plane 3f of the vertical plate. FIG. 5 shows another embodiment of the air straightening plate 3x, in which the vertical plate in the above embodiment is removed and only the wind receiving plate 3d is provided. As described above, the form of the air straightening plate 3x can be modified in various ways.

The suction nozzle 3y and the air rectifying plate 3x of the removing means 3 are configured to be replaceable so that they can be selectively used depending on the type of metal plating solution as described above. Hereinafter, the configuration will be described in detail. The oscillating bar 5 is formed in a pipe shape and is connected to a blowing means (not shown) such as a compressor so that pressurized air can be sent. A joint 17 is provided in the middle of the rocking bar 5, and the suction nozzle 3 y is attached to the joint 17.
The connector 19a at the upper end of the pipe body 18 having the lower end can be detachably connected. Further, the connecting member 19b at the upper end of the holding member 20 having the air rectifying plate 3x at the lower end can be detachably connected to the joint 17. These connecting tools 19
a and 19b have the same shape. And joint 17
The connection tools 19a and 19b may be connected by any means such as screw fastening or fitting means. When the air straightening plate 3x is used, the connecting tool 19
In the connection state of b, the air supply to the holder 20 is cut off, and the air is not supplied to the air straightening plate 3x side.

As described above, by selectively using the suction nozzle 3y and the air rectifying plate 3x according to the type of the metal plating solution, it is not necessary to replace the entire apparatus for each different type of the metal plating solution. Therefore, it is possible to improve workability and simplify the apparatus by replacing only the removing means 3.

[0020]

According to the present invention, in the moving path of the metal-plated plate, a vertically long rocking bar is hung so as to be rockable in the thickness direction of the metal-plated plate at a position along the side end surface of the metal-plated plate. A means for holding and removing the excess plating solution by using air pressure, facing the side end surface of the metal plating plate, and swinging in the plate thickness direction of the metal plating plate by engaging with the side end part of the metal plating plate. The follower attached to the rocking bar is attached to the rocking bar, so that the follower attached to the rocking bar engages with the side end of the metal plating plate to make the rocking bar the plate thickness of the metal plating plate. It has the advantage that it can be swung in the direction, the removing means can always follow the side end surface of the metal plating plate, and the excess plating solution adhering to the side end surface of the metal plating plate can be removed well. .

In the second aspect, since the removing means and the follower are close to each other, the removing means is close to the follower, and there is an advantage that the followability can be further enhanced. In claim 3, the removing means is a suction nozzle that sucks the excess plating solution in association with the suction of air, or an air straightening plate that removes the excess plating solution by using the blowing force of the air, and the suction nozzle and the air. Since the straightening vane is replaceable, the suction nozzle and the air straightening vane can be selectively used according to the type of metal plating solution, and the entire device can be replaced for each different type of metal plating solution. There is an advantage that the workability can be improved and the device can be simplified by replacing only the removing means.

[Brief description of the drawings]

FIG. 1 shows an embodiment of the present invention, in which (a) is a schematic front view and (b) is a schematic side view.

FIG. 2A is a schematic cross-sectional view showing the action of the suction nozzle, and FIGS. 2B and 2C are schematic plane cross-sectional views showing the action.

FIG. 3 is a schematic front view using the above air straightening plate.

4A is a partial cross-sectional view of an air straightening plate, FIG. 4B is a schematic cross-sectional view of a metal-plated plate before removing a surplus plating solution, FIG. [Fig. 4] is a side sectional view showing an action.

FIG. 5 is a schematic plan sectional view showing another embodiment of the above air straightening plate.

FIG. 6 shows a conventional example, (a) is a schematic front view, and (b) is a schematic side view.

[Explanation of symbols]

 1 Plating bath 2 Metal plating plate 3 Removal means 4 Follower 5 Swing bar

Claims (3)

[Claims] 1. A removal device for removing an excess plating solution adhering to a side end surface of a metal plating plate that is pulled upward through a plating bath, the side end surface of the metal plating plate being a moving path of the metal plating plate. A rocking bar that is long in the up and down direction is hung and held so that it can swing in the plate thickness direction of the metal plating plate at a position along the
Removal means facing the side end surface of the metal plating plate to remove the excess plating solution by using air pressure, and engaging with the side end portion of the metal plating plate to follow the shaking of the metal plating plate in the plate thickness direction. An apparatus for removing a surplus plating solution for molten metal plating, characterized in that the follower is attached to a rocking bar. 2. The excess plating solution removing apparatus for molten metal plating according to claim 1, wherein the removing means and the follower are arranged close to each other. 3. The removing means is a suction nozzle for sucking the excess plating solution with the suction of air or an air straightening plate for removing the excess plating solution by utilizing the blowing force of the air, and the suction nozzle and the air straightening An apparatus for removing a surplus plating solution for hot metal plating according to claim 1 or 2, wherein the plate and the plate are replaceable.