JPH0689477B2 - Liquid leakage prevention device in continuous plating equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The liquid leakage prevention apparatus in the continuous plating apparatus of the present invention will be described in detail according to the following items.

A. Industrial fields of use B. Outline of the invention C. Prior art [Figs. 8 to 10] D. Problems to be solved by the invention [Figs. 8 to 10] E. To solve the problems Means F. Embodiment [Figs. 1 to 7] a. Outline of plating section [Figs. 1 and 2] b. Liquid leakage prevention device [Figs. 1 to 7] c. Action [ 1 to 7] G. Effect of the Invention (A. Field of Industrial Application) The present invention relates to a liquid leakage prevention device in a novel continuous plating apparatus. More specifically, regarding the liquid leakage prevention device installed on the front and rear end walls of the liquid treatment tank in a continuous plating device that continuously plating the running strip, compared to the conventional one, scratches on the strip and plating SUMMARY OF THE INVENTION It is an object of the present invention to provide a liquid leakage prevention device for a new continuous plating device which does not have to be attached, has little liquid leakage, and has a long life and is easy to maintain.

(B. Outline of the Invention) The liquid leakage prevention device in the continuous plating apparatus of the present invention has two seal rolls arranged side by side inside the front and rear end walls of the liquid treatment tank, and the two seal rolls are strips. By arranging them so that the part facing the slit through which they are inserted is sandwiched between them, and is movable in the direction orthogonal to the axis of the seal rolls, and the peripheral surface of each seal roll is separable. When the strip travels between the two seal rolls, the seal roll rotates due to the frictional force generated between the strip and the seal roll, and the frictional force caused by the rotation causes the seal roll to form the strip. To come into close contact,
In addition, the liquid pressure in the liquid treatment tank is pressed toward the slit side, which prevents liquid leakage from the liquid treatment tank, and the seal roll has a frictional force that accompanies the running of the strip. Since it rotates on the surface of the streak, it does not damage the streak and the plating applied on it, and since the seal roll does not have its peripheral surface in sliding contact with the streak, There is almost no friction on the peripheral surface, so
It has a long life and is extremely easy to maintain.

(C. Prior art) [Figs. 8 to 10] In a continuous plating apparatus for continuously plating traveling strips, strips are used in many liquid treatment tanks such as plating tanks and washing tanks. Plating is performed in the process of passing through.
Each of the liquid processing tanks contains therein a required liquid such as a plating liquid and a cleaning liquid, and an inlet / outlet for the strip to pass therethrough. Therefore, liquid leakage at the inlet / outlet is prevented. Prevention is needed.

8 to 10 show an example of a liquid leakage prevention device in a conventional continuous plating device.

Reference numeral a is a plating part of a continuous plating apparatus, in which partition walls c and c'are formed at positions near both front and rear ends in a tank body b which is long in the front-rear direction, and between the partition walls c and c'of the tank body b. The part d is a plating tank.

Vertically elongated slits e and e'are formed in the partition walls c and c ', and vertically long slits are also formed in the front and rear end walls f and f'of the tank b corresponding to the slits e and e'. g and g'are formed.

In the tank body b, the portions h and h'between the front and rear end walls f and f'and the partition walls c and c'are overflow portions.

Reference numeral i denotes a strip-shaped strip, which has been run through the pretreatment process section, is plated in the plating section a, and is run to the next treatment process section. The strip i is the plated part a.
Then, it enters from the slit g of the front end wall f, reaches the inside of the plating tank d through the slit e of the front partition wall c, and then the slit e ′ of the rear partition wall c ′ and the slit g ′ of the rear end wall f ′. Exit from part a. Then, in the plating tank d, the plating solution is sprayed from a spray nozzle (not shown) to constantly supply the plating solution, and the plating solution discharged from the plating tank d to the overflow portions h, h ′ is drained via a drain (not shown). After being recovered and regenerated, it is supplied again into the plating tank d through the injection nozzle. Then, the strip i is cathodized through an electrode roll (not shown), and is placed in the plating bath d.
And an anode (not shown) arranged opposite to each other cause an electrolytic action, whereby plating is performed on the strip i.

By the way, since the strips i having various widths and thicknesses are used in the continuous plating apparatus, the slits e, e ′, g,
g'is formed to have a size that fits the maximum size of the strip i, and its edge is slidably in contact with the strip i.
In order to prevent the plating formed on the strips i from being damaged, the strips are formed in a slightly large size so as not to come into contact with the strips i. Therefore, the slit e of the plating tank d,
If some measure for preventing liquid leakage is not applied to e ′, the plating solution in the plating tank d will immediately flow to the overflow parts h and h ′, and the liquid level of the plating solution in the plating tank d will be There is a problem of becoming low.

Therefore, conventionally, a liquid leakage prevention device j as shown in the figure has been adopted.

k is an insertion portion formed on the outer surface of the partition walls c, c ′,
It is formed in a flat and vertically long box shape, the upper end 1 is opened, both ends m, m of the lower end are closed, and further, a slit n is formed at a position corresponding to the slits e, e ′ of the partition walls c, c ′. ing.

Reference numeral o denotes a sponge plate, which has a plate shape of a size that can be exactly accommodated in the insertion portion k, and has a slit p extending from near one end to the other end.

q is a sponge holder, has an outer shape that can be inserted into the insertion portion k with a margin, and
It has a flat storage space r that opens at the top, and
Slits s, s corresponding to the slits e, e'and n are formed on both front and rear walls thereof.

Then, the sponge plate o is stored in the storage space r of the sponge holder q. At this time, the sponge plate o is in a slightly compressed state. Then, the sponge holder q holding the sponge plate o is inserted into the insertion portion k.

Then, the strip i has the slits e, e ′, n,
p, s, s are inserted. Since the sponge plate o is accommodated in the accommodating space r of the sponge holder q in a slightly compressed state, it is in a state of being lightly pressed against the strip i by the slit p thereof. Liquid leakage is prevented.

(D. Problems to be Solved by the Invention) [Figs. 8 to 10]
[Fig.] By the way, there are various problems in the liquid leakage prevention device j in the above-mentioned continuous plating device.

First, when used for a long time, the surface of the sponge plate o and the surface of the sponge plate o that comes into contact with the strip i are soiled or scratched due to burr on the edges, and the sponge plate o contacts the strips. If foreign matter such as sludge adheres to the surface, the surface of the strip i or the plated surface applied to it will be scratched. Especially, in the case of plating soft metal such as solder or tin, it can be applied to the plated surface for a short time. You will be able to get scratches. Therefore, it is necessary to replace the sponge plate o with a new one frequently, usually every day.
The cost required for maintenance such as labor and material cost for that is enormous.

In addition, as the height of the liquid processing tank increases and the liquid level increases,
It becomes difficult to equalize the surface pressure applied to the sponge plate o, and liquid leakage easily occurs.

Further, when the joint of the strip i and the joint of the dummy part and the strip i pass through the sponge plate o, the position of the sponge plate o may be displaced and a large amount of liquid may flow out, and There is a problem that such a state does not return to the original.

Further, when the bath temperature of the sponge exceeds 50 ° C., its elasticity is lowered and the waterproof effect is extremely lowered, so that a sponge excellent in heat resistance must be used, which causes a cost increase.

(E. Means for Solving the Problem) In order to solve the above-mentioned problems, the liquid leakage prevention device in the continuous plating device of the present invention has two seal rolls each inside the front and rear end walls of the liquid treatment tank. The two seal rolls are arranged side by side, and the two seal rolls are arranged so as to sandwich the portion facing the slit through which the strips are inserted, and are movable in the direction orthogonal to the axis of the seal rolls. It is designed so that the peripheral surface can be separated and contacted.

Therefore, in the liquid leakage prevention device in the continuous plating apparatus of the present invention, when the strip is run between the two seal rolls, the seal roll is formed by the frictional force generated between the strip and the seal roll. The seal roll rotates and comes into close contact with the strip due to the frictional force caused by the rotation, and further, the seal roll moves toward the slit side due to the pressure of the liquid in the liquid treatment tank, and the two seal rolls come into close contact with each other. To prevent liquid leakage from the liquid treatment tank, and because the seal roll rotates on the surface of the strip due to the frictional force accompanying the running of the strip, the strip and its There is no damage to the plating applied on the seal roll, and since the peripheral surface of the seal roll does not make sliding contact with the strip, there is almost no friction on the peripheral surface of the seal roll, and therefore the life is long. The maintenance also becomes extremely easy.

(F. Embodiment) [FIGS. 1 to 7] The details of the liquid leakage prevention apparatus in the continuous plating apparatus of the present invention will be described below with reference to the illustrated embodiments.

1 to 7 show an example 1 of implementation of the liquid leakage prevention device in the continuous plating apparatus of the present invention.

In the illustrated embodiment, the present invention is applied to a liquid leakage prevention device in a plating tank in a plating part of a continuous plating device.

(A. Outline of plating section) [Figs. 1 and 2] 2 is a plating section in a continuous plating apparatus.

3 is a tank body which is long in the front-rear direction, and partition walls 4 and 4'are formed at positions near both front and rear ends thereof, and the tank body 3 has a plating tank 5 between the two partition walls 4 and 4'and the plating tank 5 Are divided into continuous overflow portions 6 and 6 '.

Numerals 7 and 7 ′ are slits formed so as to extend in the vertical direction at the center of the partition walls 4 and 4 ′ in the left-right direction. Further, slits 9 and 9'corresponding to the slits 7 and 7'are also formed in the center portions of the tank body 3 on both front and rear ends in the lateral direction of 8 and 8 '.

Reference numeral 10 denotes a strip formed of a conductive metal material in a strip shape. The strip feeding mechanism (not shown) passes through the slit 9 of the front end wall 8 to enter the overflow portion 6, and then from the slit 7 to the plating tank 5 Then, it is sent so that it enters the inside, further exits the plating tank 5 through the slit 7 ', enters the overflow portion 6'on the rear side, and finally exits the plating portion 2 through the slit 9'.

Reference numeral 11 denotes a plating solution supply part formed in a central part of the bottom part of the plating tank 5 in the left-right direction so as to extend in the front-rear direction, and has a shape like a long box lying in the front-rear direction. A large number of supply pipes 12, 12, ... Are arranged upright in two rows in the front-rear direction. The supply pipes 12, 12, ... Are paired with the two pipes arranged side by side, and a large number of injection holes 13, 13 ,. Supply pipes 12, 12, ...
Is run between.

Reference numeral 14 is an inlet projecting downward from the center of the plating solution supply unit 11, and is connected to a pump 16 via a valve 15.

Reference numeral 17 is a plating solution regeneration storage tank, and its outlet 18 is connected to a pump 16 via a valve 19.

Then, the plating solution in the plating solution reclaiming storage tank 17 is the outlet 18, valve 19, pump 16, valve 15, inlet.
It is supplied to the plating solution supply unit 11 via 14 and from there, through the supply pipes 12, 12, ..., The injection holes 13, 13 ,.
It is jetted from the striation 10 to.

Reference numerals 20 and 20 'denote drain pipes provided at the bottoms of the overflow portions 6 and 6', and the plating solution overflowed from the plating tank 5 to the overflow portions 6 and 6'through the drain pipes 20 and 20 '. It is returned to the storage regeneration tank 17, regenerated here, and supplied again to the plating tank 5.

Reference numerals 21 and 21 denote anode bars arranged at positions left and right from the center in the horizontal direction in the plating tank 5, and the anode bars 21 and 21 have anodes 22, 22 ,.
The anode cases 23, 23, ... Then, the anode bars 21, 21 are connected to a power feeding means (not shown), and the anodes 22, 22, ... Are set to a predetermined potential.

24 and 24 are power supply rolls, which are in contact with the traveling strip 10 and are rotating, and the strip 10 is brought to a potential lower than the potentials of the anodes 22, 22, ... Via the feed rolls 24 and 24. , For example, to ground level.

Then, the plating solution is poured into the plating tank 5 until the strip 10 is completely immersed, and further, the plating solution is continuously supplied from the injection holes 13, 13, ... Of the supply pipes 12, 12. At the same time, an amount of the plating solution newly supplied is overflowed to the overflow portions 6 and 6'and returned to the plating solution reservoir regeneration tank 17. Then, the strip 10 is plated while passing through the plating tank 5.

(B. Liquid leakage prevention device) [Figs. 1 to 7] 25 and 25 'are liquid leakage prevention devices.

Since the liquid leakage prevention devices 25 and 25 'have the same structure, only one of them will be described in detail, and the other 25' will be described in the same parts as the respective parts of the liquid leakage prevention device 25. The same reference numerals as those of the liquid leakage prevention device 25, which are the same as those of the liquid leakage prevention apparatus 25, are denoted by reference numerals with “′” added, and detailed description thereof is omitted.

Numerals 26 and 26 are seal rolls, which are arranged side by side in a position facing the slit 7 inside the partition wall 4. The seal rolls 26, 26 are composed of core portions 27, 27 and linings 28, 28 covered by the core portions 27, 27.

The core portions 27, 27 are formed into a circular tube shape with a material having relatively high rigidity and excellent chemical resistance, such as a pipe made of hard vinyl chloride. The core portions 27, 27 may be formed in a cylindrical shape with both ends closed, or in a solid columnar shape, instead of the cylindrical shape.

The linings 28, 28 are covered on the parts of the core parts 27, 27 excluding the upper and lower end parts 27a, 27a and 27b, 27b, and have a relatively high coefficient of friction, elasticity and excellent chemical resistance. It is formed of another material, for example, soft vinyl chloride, has a tubular shape, and is fixed to the core portions 27, 27 in an externally fitted shape.

Also, in order to increase the friction coefficient of the lining 28, 28 surface,
A large number of grooves 29, 29, extending in the axial direction are formed on the outer peripheral surface thereof. In addition, lining to increase the friction coefficient
The grooves formed on the outer peripheral surfaces of 28, 28 are not limited to those extending in the axial direction, and various shapes such as a mesh shape and a lattice shape can be considered.
In addition, the structure itself of the seal rolls 26, 26 is the core portion 27, 27.
It does not mean that the lining and the lining 28, 28 must be a two-layer structure.

Reference numeral 30 denotes a lower frame formed on the inner surface of the partition wall 4, and the slit 7
It is located a little below the bottom edge of. Further, a receiving recess 31 which is long in the left-right direction is formed on the upper surface of the lower frame 30. The depth of the receiving recess 31 is the core of the seal roll 26, 26.
It is made slightly smaller than the length of the lower end portions 27b, 27b of 27, 27.

32 is also an upper frame formed on the inner surface of the partition wall 4. The upper frame 32 is located slightly above the upper end of the slit 7. And
The upper frame 32 is formed with a receiving hole 33 which is substantially the same shape as the receiving recess 31 formed in the lower frame 30 and which is long in the left-right direction.

34 is a lid plate detachably attached to the upper surface of the upper frame 32,
By attaching the cover plate 34 to the upper frame 32, the upper surface of the receiving hole 33 formed in the upper frame 32 is closed.

Therefore, the two seal rolls 26, 26 are arranged side by side, and the lower end portions 27b, 27b thereof are received in the receiving recess 31 of the lower frame 30 with a margin, and the upper end portion 27a. , 27a
Is received in the receiving hole 33 of the upper frame 32 with a margin, and then the cover plate 34 is attached to the upper frame 32, whereby the two seal rolls 26, 26 are separated from the lower frame 30. In a state where it can be freely rotated on the upper frame 32 and is prevented from falling off from these,
Further, they are supported so that they can be separated from and contacted with each other.

The strip 10 is a seal roll supported as described above.
Routed between 26 and 26.

(C. Action) [FIG. 1 to FIG. 7] However, when the strip 10 is fed, the two seal rolls 26, 26 are rotated along with the feeding, and
The seal rolls 26, 26 have upper and lower end portions 27a, 27a and 27.
The friction between the b and 27b and the lower frame 30 and the upper frame 32 causes them to rotate while closely contacting with both surfaces of the strip 10.
Further, the pressure of the plating solution 35 contained in the plating tank 5 works to press the seal rolls 26, 26 toward the slits 7, whereby the two seal rolls 26, 26 are pressed.
The liquid stopping effect is exhibited by. Moreover, if the liquid level in the plating tank 5 rises and the pressure of the liquid increases, the seal rolls 26, 26 are pushed toward the slit 7 side accordingly, and the liquid level becomes high, so that the liquid stopping effect decreases. No more, the liquid gradually overflows from the slit 7 and stops.

Further, since the seal rolls 26, 26 rotate with the feeding of the strip 10, the seal rolls 26, 26 do not rub the surface of the condition 10 strongly, and therefore, the surface of the strip 10 or the surface thereof is not rubbed. Almost no damage to the plated plating, moreover, the fact that there is no rubbing between the strip 20 and the seal rolls 26, 26 hardly causes wear or dirt of the seal rolls 26, 26,
The same seal rolls 26, 26 can be used for a long time, labor saving in maintenance and material saving can be achieved, and lining cost can be remarkably reduced.

(G. Effects of the Invention) As is clear from the above description, the liquid leakage prevention device in the continuous plating device of the present invention is a liquid treatment tank in a continuous plating device for continuously plating a running strip. Longitudinal slits through which the strips are inserted are formed on both front and rear end walls of the liquid treatment tank, and two seal rolls are arranged side by side inside the front and rear end walls of the liquid treatment tank. It is arranged with the part facing it in between,
It is characterized in that it is movable in a direction orthogonal to the axis of the seal rolls, and the peripheral surface of each seal roll can be separated from and brought into contact with the seal roll.

Therefore, in the liquid leakage prevention device in the continuous plating apparatus of the present invention, when the strip is run between the two seal rolls, the seal roll is formed by the frictional force generated between the strip and the seal roll. A direction in which the seal rolls rotate and come into close contact with the strip due to the frictional force due to the rotation, and further, the two seal rolls come into close contact with the slit side due to the pressure of the liquid in the liquid processing tank It is pressed against and the liquid is prevented from leaking from the liquid treatment tank. Moreover, since the seal roll rotates on the surface of the strip due to the frictional force accompanying the traveling of the strip, It does not damage the applied plating, and since the peripheral surface of the seal roll is not in sliding contact with the strip, there is almost no wear on the peripheral surface of the seal roll, and therefore the life is long. Maintenance It becomes easy Te order.

In addition, in the above-mentioned embodiment, the present invention is shown to be applied to the plating part of the continuous plating apparatus, but the present invention may be applied to other parts such as a rinsing part where treatment with water or various treatment liquids is performed. It goes without saying that is possible.

Furthermore, the above-mentioned embodiment is merely one of the specific examples of the liquid leakage prevention device in the continuous plating apparatus of the present invention, and the technical scope of the present invention is limited to that shown in the embodiment. However, this does not mean that various modifications can be made without departing from the scope of the claims.

[Brief description of drawings]

1 to 7 show an example of the implementation of the liquid leakage prevention device in the continuous plating apparatus of the present invention. FIG. 1 is a schematic plan view of the plating part, and FIG. 2 is a schematic enlarged vertical cross section of the plating part. 3 and 4 are perspective views of the liquid leakage prevention device, FIG. 4 is an enlarged plan view of the liquid leakage prevention device, FIG. 5 is a cross-sectional view taken along the line VV of FIG. 4, and FIG. 7 is an enlarged front view of the liquid leakage prevention device.
The figure shows a partially cutaway enlarged perspective view of the seal roll, FIGS.
FIG. 10 shows an example of a liquid leakage prevention device in a conventional continuous plating apparatus. FIG. 8 is a schematic plan view of a plating part, FIG. 9 is an enlarged perspective view of the liquid leakage prevention device, and FIG. It is an expansion perspective view of a sponge board. Explanation of symbols 1 (25, 25) ... Liquid leakage prevention device in continuous plating equipment, 4, 4 '... Both front and rear walls of liquid treatment tank, 5 ... Liquid treatment tank, 7, 7' ... Slit, 10 ... Strip , 26, 26 '... Seal roll

Claims (1)

[Claims] 1. Longitudinal slits through which a strip is inserted are formed on both front and rear end walls of a liquid treatment tank in a continuous plating apparatus for continuously plating a traveling strip. Inside, two seal rolls are arranged side by side, and the two seal rolls are arranged with the portion facing the slit sandwiched therebetween, and are movable in a direction orthogonal to the axis of the seal roll. The liquid leakage prevention device in the continuous plating device is characterized in that the peripheral surface of each seal roll is freely contactable and detachable.