KR100743187B1 - Apparatus for removing pure water of conduction roll - Google Patents

Abstract

It is an object of the present invention to provide an apparatus for purely removing a conductive roll capable of improving the plating quality of a strip.

Thus, the pure water removing device of the present invention, the electrolytic cell containing the electrolyte, a conductive roll that is rotated to transfer the strip while a part thereof is immersed in the electrolyte and charged to the negative electrode, and the lower side of the conductive roll inside the electrolytic cell An electroplating apparatus comprising an anode plate installed and charged with an anode, comprising: a pure spray means comprising a pure spray nozzle for spraying pure water toward the conductive roll; Temporary storage means for temporarily storing the pure water sprayed by the pure water spray means and the electrolyte solution removed by the pure water at a rear side of the pure water spray means to prevent the pure water and the electrolyte solution from flowing into the electrolytic cell; Recovery means for sucking and recovering the pure water and the electrolyte solution temporarily stored in the temporary storage means; A main body provided with the pure spray means, temporary storage means and recovery means; Air injection means for injecting air toward the conductive roll to form an air curtain; Conveying means for conveying the main body in the horizontal and vertical direction.

Conduction Roll, Plating, Electrolyte, Suction, Pure Water, Scotch Britrol, Air,

Description

Pure water removal device for conductive rolls {APPARATUS FOR REMOVING PURE WATER OF CONDUCTION ROLL}

1 and 2 are views showing the installation state of the pure water removing device according to the present invention.

Figure 3 is a view showing the configuration of a bracket is installed pure water removal apparatus of the present invention.

4 is a view showing the configuration of the main part of the present invention.

5 is a view showing a side plate configuration of the present invention.

6 is a view showing an air jet nozzle unit of the present invention.

7 is a plan view for explaining the operation of the present invention.

8A and 8B are views showing the configuration of the suction cylinder of the present invention.

Explanation of symbols on the main parts of the drawings

10: electrolysis cell 30: removal device

32: conductive roll 48: pure spray nozzle

56: inflow prevention nozzle 56 ': outflow prevention nozzle

64: guide roll 68: Scotch Breitrol

76: discharge prevention roll 92: suction cylinder                 

102: camshaft 130: strip

The present invention relates to an electroplating apparatus for continuously plating a strip, and more particularly, to a conductive roll for charging the strip to a cathode.

In general, a method of plating a strip includes a hot dip plating method in which a strip is deposited in a plating bath of a metal to be fused to form a plating layer, and an electroplating method in which a cation of an electrolyte is electrodeposited onto a strip charged with a cathode. have.

Among them, the electroplating method has a finer structure of the plating layer than the hot dip plating method, single-sided plating is possible, and there is no heating and cooling process, so that the mechanical properties of the strip can be maintained, and the density of current and the transfer speed of the strip are controlled. Since the thickness of the plating layer can be controlled, the electroplating method is mainly used for plating the strip.

The electroplating production equipment for producing strips by the electroplating method includes an entrance equipment consisting of a payoff reel, a welder, and an entrance looper, a central equipment for degreasing, pickling, electroplating, and post-treatment, an exit looper and an oil supply facility, The electroplating apparatus, which comprises an exit facility consisting of an inspection room and a tension reel, wherein the electroplating apparatus for forming a plating layer on the strip is rotated to transfer the strip while the electrolyte is contained therein, and a part thereof is immersed in the electrolyte, and charged to the cathode. It is made of a conductive roll and a positive electrode plate which is installed on the lower side of the conductive roll inside the electrolytic cell and charged with the positive electrode.

Therefore, the electroplating apparatus of the above-described configuration is made in a portion where the plating of the strip is immersed in the electrolyte by the conductive roll.

That is, since the electrolyte contained in the electrolytic cell is electrolyzed by the conductive roll and strip charged with the negative electrode and the positive electrode plate charged with the positive electrode, the strip is deposited as the positive charge of the electrolyzed electrolyte is deposited on the strip that is brought into close contact with the conductive roll. Plated.

In the electroplating apparatus of such a configuration, the conductive roll is typically used to have a wider width than that of the strip in order to form a plating layer on various strips having different widths. Rolls are formed with pressing marks by the strip edges due to the difference in width between the strip and the conductive roll.

Therefore, in the case of forming a plating layer on a wider strip compared to the strip which has been previously plated, the pressing mark portion by the strip edge must be manually removed by scotch bright or sand paper, wherein the pressing mark removing operation is performed. If this is not completed within a short time, a line mark due to the push mark is generated on the strip.

In addition, as mentioned above, a part of the conductive roll is also submerged in the electrolyte so that a part of the strip is immersed in the electrolyte, and since the width of the conductive roll is larger than the width of the strip, the outer side of the strip edge As a result, electrolyte is buried on both sides of the conductive roll.

However, since the electrolyte is made of a liquid component having a flowability, the electrolyte buried on the side of the conductive roll flows toward the center during the rotation of the conductive roll, and the flow of the electrolyte is the back side of the strip, that is, the surface that does not form a plating layer. In this way, the electrolyte flowing toward the center of the conductive roll generates a contamination mark due to the electrolyte on the strip due to the electrochemical reaction.

Therefore, conventionally, the pure water was sprayed from the pure water nozzle to prevent the electrolyte solution buried on the side of the conductive roll from flowing toward the center of the conductive roll. In many cases, it was not easy to prevent the liquid from flowing toward the surface, and contamination marks caused by electrolytes not removed by the pure water were generated.

In addition, conventionally, the pure water sprayed from the nozzle is not processed to the outside to flow into the electrolytic cell to dilute the electrolyte, and thus the temperature and concentration of the electrolyte is changed, so there is a problem in quality control such as poor plating surface.

Accordingly, the present invention is to solve the above problems, it is possible to prevent the generation of the contamination mark due to the electrolyte on the conductive roll and the line mark due to the pressing mark of the strip edge, the pure water sprayed from the nozzle is introduced into the electrolytic cell It is an object of the present invention to provide a pure water removal device of the conductive roll that can suppress the thing.

The present invention to achieve the above object,

An electrolyte cell containing an electrolyte solution, a conductive roll rotated to transfer a strip while a part thereof is immersed in the electrolyte solution, and charged with a cathode, and a positive electrode plate installed under the conductive roll inside the electrolyte cell and charged with a positive electrode; In the electroplating apparatus,

Pure spray means comprising a pure spray nozzle for spraying pure water toward the conductive roll;

Temporary storage means for temporarily storing the pure water sprayed by the pure water spray means and the electrolyte solution removed by the pure water at a rear side of the pure water spray means to prevent the pure water and the electrolyte solution from flowing into the electrolytic cell;

Recovery means for sucking and recovering the pure water and the electrolyte solution temporarily stored in the temporary storage means;

A main body provided with the pure spray means, temporary storage means and recovery means;

Air spraying means for spraying air toward the conductive rolls to form an air curtain to prevent outflow of pure water and electrolyte from inside the main body to the outside of the main body and to prevent the electrolyte from outside the main body from flowing into the main body;

Conveying means for conveying the main body in horizontal and vertical directions;

Consists of a pure water removal device of the conductive roll comprising a.

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

1 and 2 show a state in which the pure water removal device of the present invention is installed, Figure 1 is a front view, Figure 2 is a side view.

Two vertical supports 12 and 12 are fixedly installed on the outside of the electrolytic cell 10, horizontal supports 14 are installed on upper ends of the vertical supports 12 and 12, and both ends of the horizontal support 14 are provided. On the side, the motors 16 and 16 are respectively installed.

In addition, the feed shafts 18 and 18 are connected to each of the rotating shafts of the motors 16 and 16, and the feed screws 18 and 18 pass through the bearing blocks 20 and 20 and the brackets 22 and 22. Its end is supported by a screw end support 24 provided in the middle portion of the horizontal support 14.

Here, the brackets 22 and 22 are provided with three shaft holes, as shown in Figure 3, the feed screw 18 is inserted into the central shaft hole, the guide bar 26 is inserted into the shaft holes on both sides. In the center shaft hole, a threaded portion (not shown) is formed to engage the threaded portion of the feed screw 18.

Accordingly, when the feed screw 18 is rotated by driving the motor 16, the bracket 22 is moved in the horizontal direction along the feed screw 18.

In this manner, the bracket 22 moving along the conveying screw 18 is fixedly installed with a conveying cylinder 28 operating in the vertical direction, and the end of the piston 28 'of the conveying cylinder 28 is a main body to be described below. It is fixed to the horizontal frame of the two pure water removal devices 30, 30 provided respectively on the left and right sides of FIG. 1 have the same configuration, and only the main body provided on the right side for convenience of description below.

As shown in FIG. 4, the pure water removing device includes a pair of side plates 34 which are provided to face each other and have a bottom surface formed with a curvature similar to the circumferential surface of the conductive roll 32, and the front surface of the side plate 34. And front and rear covers 36 and 36 'and upper cover 38 installed on the rear and upper surfaces, a pair of vertical frames 40 and 40 installed on the upper cover 38, and vertical frames 40 and 40. It has a horizontal frame 42 connecting the ends of the).

The pure water supply pipe 46 is fixed to the front side of the horizontal frame 42 by the pure water supply pipe holder 44, and one end of the pure water supply pipe 46 sprays pure water toward the front of the front cover 36. The nozzle 48 is installed, and the other end of the pure water supply pipe 46 is provided with a pure water supply bellows pipe 50 that contracts and expands during operation of the transfer cylinder 28.

At this time, the pure spray nozzle 48 is installed to be inclined at a constant inclination angle with respect to the side plate 34 as shown in Figure 7 in order to ensure that the sprayed pure water is effectively introduced into the interior of the apparatus 30 body.

In addition, an air supply pipe 52 is fixed to the rear side of the horizontal frame 42, and one end of the air supply pipe 52 penetrates the top and bottom surfaces of the side plate 34 as shown in FIG. 5. Two connecting pipes 54 and 54 'inserted into the side plate 34 are connected to each other, and end portions of the connecting pipes 54 and 54' at the bottom of the side plate 34 are shown in FIGS. 5 and 6. As described above, the inflow prevention nozzle 56 and the outflow prevention nozzle 56 'are fixed to the bottom surface of the side plate 34 by the nozzle bracket 58 along the bottom surface of the side plate.

The inflow prevention nozzle 56 has an end portion facing outward of the device 30 to inject air to prevent the electrolyte on the conductive roll 32 from entering the device 30, and the outflow prevention nozzle 56 ′. ) Has an inwardly facing end of the device 30 to inject air to prevent outflow of pure water and electrolyte inside the device.

On the other hand, in the side plate 34 to the inside of the outflow prevention nozzle 56 ', a scattering prevention cover 60 for preventing the pure water and the electrolyte from being scattered by the air injected from the nozzle 56', the nozzle bracket It is fixed by 58.

And, the other end of the air supply pipe 52 is connected to the air supply bellows pipe 62 that contracts and expands during operation of the transfer cylinder 28.

Accordingly, the air supplied through the air supply bellows pipe 62, the air supply pipe 52, and the connection pipes 54 and 54 ′ is transferred through the inflow prevention nozzle 56 and the outflow prevention nozzle 56 ′. 32, an air curtain is formed between the conductive roll 32 and the ends of the nozzles 56 and 56 ', so that the pure water and the electrolyte inside the device 30 flow out of the device, and the electrolyte outside the device. It is possible to prevent the inflow into the inside can effectively remove the pure water and the electrolyte inside the device.

4 and 7, a guide roll 64 having a shape in which a central portion is dug in front of the side plate 34 is rotatably installed on the side plate 34 by the bracket 66. The guide roll 64 serves to guide the electrolyte and the pure water from the conductive roll 32 to be introduced into the apparatus.

On the inside of the device 30 to the rear of the guide roll 64, the Scotch Brightroll 68 coated with Scotch Bright material is rotatable on the side plate 34 via the sealing plate 70 and the bearing 72. The roll 68 serves to absorb the pure water and electrolyte flowing through the guide roll 64 while continuously removing the press marks generated on the surface of the conductive roll 32 due to the strip edges. .

As such, the pure water and the electrolyte absorbed by the Scotch Britroll 68 are discharged from the roll 68 by the pressing roll 74 compressing the roll 68 and then discharged along the surface of the conductive roll 32. It is flowed toward the prevention roll 76, the pressing roll 74 is rotatably installed at the end of the bracket 78 fixed to the side plate 34, the pressing roll 74 toward the Scotch Britroll 68 A spring 80 is installed in the bracket 78 to pressurize.

Then, at the rear of the main body to the rear of the Scotch Britroll 68, a discharge preventing roll 76 for preventing the pure water and the electrolyte discharged from the Scotch Britrol 68 from being discharged to the rear of the main body along the conductive roll surface. The bracket 82 is rotatably mounted to the side plate 34.

Therefore, in front of the discharge prevention roll 76, the pure water and the electrolyte in the main body discharged from the Scotch Britroll 68 is temporarily stored.

On the other hand, the temporarily stored pure water and electrolyte as described above should be discharged to the outside of the main body, for this purpose, the pure water removing device of the present invention is provided with a recovery means.

4, 8A and 8B, the upper and lower covers 86 and 86 'are coupled to the upper and lower sides of the cylinder holder 84 assembled to the upper cover 38, respectively, and the lower cover 86' ), A suction cylinder 92 having a hollow end cover 90 is fixedly installed such that the end cover 90 is positioned in front of the discharge preventing roll 76, and a hollow type inside the cylinder 92. The piston 94 is inserted, and the guides 96 and 96 are installed in the cylinder holder 84 to guide the vertical reciprocation of the piston 94.

Here, the end of the piston 94 and the end cover 90 of the cylinder 92 is provided with check balls (98, 98 ') for controlling the inflow and outflow of pure water and electrolyte.                     

The upper end of the piston 94 protruding upward of the cylinder holder 84 is provided with a roller 104 which is rotated by a camshaft 102 having a plurality of cams 100, and an upper side of the roller 104. A spring 106 for elastically supporting the piston 94 upward is inserted between the covers 86, and a discharge bellows tube 108 for discharging pure water and electrolyte inside the piston is coupled to the piston 94. .

However, since the cylinder 92 is fixed to the lower cover 86 'of the cylinder holder 84, the bellows pipe 108 for discharging may also be moved up and down during the vertical reciprocation of the piston 94. The cylinder 92 is provided with a flow hole 110.

The other end of the discharge bellows pipe 108 is connected to the storage tank 114 fixedly installed by the support 112 under the upper cover 38, and the liquid amount of the pure water and the electrolyte in the storage tank 114 A level sensor (not shown) for detecting the oil and a suction pipe 116 for sucking pure water and electrolyte in the storage tank 114, and a recovery bellows connected to the suction pipe 116 on the upper surface of the storage tank 114. A pump 120 for discharging the pure water and the electrolyte inside the storage tank 114 to the outside through the pipe 118 is installed.

On the other hand, the pulley 122 is provided at the shaft end of the discharge prevention roll 76, the pulley 122 is connected to the pulley 124 of the Scotch Britroll 68 by a belt, while the other belt It is connected to the pulley 126 of the camshaft 102.

Therefore, when the discharge prevention roll 76 is rotated, the scotch braidrol 68 and the cam shaft 102 is also rotated in conjunction with.

The removal device of the present invention having the above-described configuration operates as follows.                     

By rotating the feed screws 18 and 18 by driving the motors 16 and 16, the brackets 22 and 22 to which the apparatus 30 of the present invention is fixed are transferred along the feed screws 18 and 18. The brackets 22 and 22 are transferred until the edge of the strip 130 is detected by the position sensor 128 located above the horizontal frame 42.

When the horizontal position movement of the device 30 is completed as described above, the piston 28 ′ of the transfer cylinder 28 is operated downward to guide the guide roll 64, the scotch braidrol 68, and the discharge prevention roll 76. To the conductive roll 32.

When the device 30 is located at the set position, that is, the position shown in FIG. 7, the plating operation is subsequently performed. The conductive roll 32 is rotated in the process of rotating the conductive roll 32 to transfer the strip 130. Electrolytic solution 132 inside the electrolytic cell 10 is buried on both sides of the sheet, ie, the surface of the conductive roll 32 outside the strip 130, and the electrolyte 132 is rotated while the conductive roll 32 is rotated. Flow toward the center of the conductive roll (32).

At this time, pure water 134 is sprayed from the pure spray nozzle 48 of the device 30, the electrolyte 132 buried on the surface of the conductive roll 32 of the portion where the edge of the strip 130 is located is sprayed The pure water 134 flows out of the conductive roll 32 and is introduced into the apparatus through the guide roll 64.

Then, the pure water and the electrolyte introduced into the device 30 is rotated by the rotational force of the discharge prevention roll 76 in close contact with the conducting roll 32, the pressing mark due to the edge 130 'of the strip 130. Absorbed by the Scotch Britroll 68 to be removed, the pure water and the electrolyte absorbed by the Scotch Britroll 68 is discharged from the roll 68 by the pressing roll 74 for pressing the roll 68, Thereafter, it flows backward along the surface of the conductive roll 32 and is temporarily stored in front of the discharge preventing roll 76 rotating in close contact with the conductive roll 32.

On the other hand, since the pulley 126 of the camshaft 102 is connected to the pulley 122 of the discharge prevention roll 76 through the belt, the camshaft 102 is also rotated when the discharge prevention roll 76 is rotated. The cam 100 of the camshaft 102 is in close contact with the roller 104 provided at the end of the piston 94 of the suction cylinder 92 so that the piston 94 moves up and down in accordance with the rotation of the camshaft 102. Thus, the pure water and the electrolyte solution temporarily stored in front of the discharge prevention roll 76 are sucked into the suction cylinder 92 and the piston 94.

Here, the suction action of the suction cylinder 92 and the piston 94 will be described in more detail as follows.

When the piston 94 is pressed by the cam 100 and moved downward, the check ball 98 'provided on the end cover 90 of the suction cylinder 92 is lowered by the pure water and the electrolyte inside the suction cylinder 92. And the check ball 98 at the end of the piston 94 is raised to the top.

Thus, the opening provided in the end cover 90 of the suction cylinder 92 is closed by the check ball 98 'and the opening provided at the end of the piston 94 is opened by the check ball 98, so that the suction Pure water and electrolyte inside the cylinder 92 flow into the hollow portion of the piston 94.

Then, when the piston 94 is moved upward due to the action of the spring 106, the check ball 98 at the end of the piston 94 is lowered to close the opening of the piston end, the suction cylinder 92 The check ball 98 'provided in the end cover 90 of the upper side is raised upward to open the opening provided in the cover 90, where pure water and electrolyte stored in front of the discharge prevention roll 76 are sucked in the cylinder. It is sucked into the interior of 92.

The pure water and the electrolyte introduced into the piston 94 by the repeated vertical reciprocating motion of the piston 94 flow into the storage tank 114 inside the main body through the discharge bellows pipe 108. When the liquid level in the tank 114 is detected to be higher than a predetermined value by a level sensor (not shown) inside, the pump 120 is operated so that the pure water and the electrolyte in the tank 114 are sucked in the suction pipe 116. And the recovery bellows pipe 118 to a recovery tank (not shown) outside the apparatus 30.

On the other hand, in the inflow prevention nozzle 56 and the outflow prevention nozzle 56 'of the side plate 34 during the operation of the apparatus 30, the air supplied through the air supply bellows pipe 62 and the air supply pipe 52 is The air injected from the inflow prevention nozzle 56 prevents the electrolyte from outside the device 30 from entering the inside of the device, and the air injected from the outflow prevention nozzle 56 ′ is pure water inside the device 30. And since the electrolyte is prevented from flowing out of the device, the pure water and the electrolyte introduced into the device 30 through the guide roll 64 is completely recovered to the storage tank 114.

As described above, according to the pure water removing device of the present invention, since the pressing mark generated on the surface of the conductive roll by the strip edge is continuously removed by the Scotch Brightroll which is rotated simultaneously with the conductive roll, the pressing mark is removed. There is no need for a separate manual operation, it is possible to effectively prevent the generation of a line mark on the strip due to the pressing mark.

In addition, by removing the electrolyte solution flowing from both surfaces of the conducting roll toward the center outward of the strip edge using pure water, and completely recovering the pure water and the removed electrolyte solution using a recovery means inside the body, It is possible to minimize the generation of contamination marks on the back surface (not plated) of the strip due to the electrolyte, which is caused by the fact that pure water is not processed to the outside and flows into the electrolyte cell to dilute the electrolyte. By changing the temperature and concentration of the electrolyte solution can prevent the problem that the plating surface is poor, there is an effect that can improve the plating quality.

Claims (5)

An electrolyte cell containing an electrolyte solution, a conductive roll rotated to transfer a strip while a part thereof is immersed in the electrolyte, and charged with a cathode, and a positive electrode plate installed under the conductive roll inside the electrolyte cell and charged with a positive electrode; In the electroplating apparatus, Pure spray means comprising a pure spray nozzle for spraying pure water toward the conductive roll; Temporary storage means for temporarily storing the pure water sprayed by the pure water spray means and the electrolyte solution removed by the pure water at a rear side of the pure water spray means to prevent the pure water and the electrolyte solution from flowing into the electrolytic cell; Recovery means for sucking and recovering the pure water and the electrolyte solution temporarily stored in the temporary storage means; A main body provided with the pure spray means, temporary storage means and recovery means; Air spraying means for spraying air toward the conductive rolls to form an air curtain to prevent outflow of pure water and electrolyte from inside the main body to the outside of the main body and to prevent the electrolyte from outside the main body from flowing into the main body; Conveying means for conveying the main body in horizontal and vertical directions; Pure water removal device of the conductive roll comprising a. According to claim 1, wherein the main body has a bottom surface formed with a curvature similar to the circumferential surface of the conductive roll and a pair of side plates installed to face each other, and the front and rear cover installed on the front, rear and top of the side plate And a top frame, a pair of vertical frames installed on the top cover, and a horizontal frame connecting end portions of the vertical frames. According to claim 2, wherein the air injection means, the air supply pipe fixed to the horizontal frame, the inflow prevention nozzle and the outflow prevention nozzle is installed along the bottom surface of the side plate, the connection connecting the nozzles and the air supply pipe And a bellows pipe for supplying air, which is installed at the other end of the air supply pipe and expands and contracts when the main body is transported in the vertical direction by the transport means. The method of claim 2, wherein the temporary storage means, rotatably installed in the front side of the side plate to guide the pure water and the electrolyte solution into the main body, and absorbs the pure water and the electrolyte flowing through the guide roll and In addition, the edge of the strip is rotatably installed on the side plate so as to remove the pressing marks generated on the surface of the conductive roll, the Scotch britrol is rotated in close contact with the conductive roll, and the pure water and the electrolyte absorbed by the Scotch Britroll A squeezing roll for pressing the surface of the Scotch Britroll to be discharged backward along the surface of the conductive roll, and the pure water and electrolyte discharged from the Scotch Britroll to the side plate to the rear of the Scotch Britrol to prevent the discharge. Is rotatably installed to include a discharge preventing roll that is in close contact with the conductive roll Pure removal device dorol. 3. The liquid collecting means according to claim 2, wherein the recovery means is fixed to the cylinder holder fixed to the upper cover and fixed to the cylinder holder such that an end thereof is positioned in front of the discharge prevention roll to suck and discharge the pure water and the electrolyte. A plurality of suction cylinders, a hollow piston installed inside the suction cylinder through the cylinder holder, a spring interposed between the upper end of the piston and the cylinder holder to elastically support the piston in an upward direction, and an upper end of the piston A cam shaft fixed to the upper cover to operate the piston in a downward direction, and having a plurality of cams installed in contact with the rollers, the cam shaft being fixed to the upper cover, and the piston to discharge the pure water and the electrolyte inside the piston. A discharge bellows pipe connected to the hollow portion of the discharge bellows pipe Storage tank for storing the pure water and electrolyte discharged from the liquid, a level sensor for detecting the liquid level in the storage tank, and recovery and contraction and expansion when the main body is transported in the vertical direction by the transfer means connected to the storage tank. And a bellows pipe and a pump for discharging the pure water and the electrolyte in the storage tank through the recovery bellows pipe to the outside of the main body.

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