KR102523168B1 - Cathode drum f0r electrolytic deposition - Google Patents

Abstract

The present invention relates to a cathode drum for electrolytic deposition. The cathode drum for electrolytic deposition includes an inner drum having an electrode rod expanding a cooling area and evenly supplying a current to a whole electrodeposition surface for cooling water flowing inside to be evenly dispersed and circulated, by being connected to a water pipe on the inner side of an outer drum including the electrodeposition surface electrodepositing a plating film on the surface. Therefore, the cathode drum for electrolytic deposition cools the electrodeposition surface of the outer drum by lowering the temperature of the inner drum by using the dispersed and circulating cooling water. So, the cathode drum for electrolytic deposition produces a thin plate of good quality by maintaining the temperature necessary for the electrodeposition of a plating film on the electrodeposition surface. Also, the cathode drum for electrolytic deposition includes the cooling water flowing into the cathode drum for the cooling water to flow into only the inner drum, be dispersed, flow out, and circulate. Therefore, the cathode drum for electrolytic deposition can largely reduce the weight of the whole cathode drum by cooling water and a load (weight) applied to a shaft unit. Accordingly, the cathode drum for electrolytic deposition can extend the life of a device. The cathode drum for electrolytic deposition includes an electrolytic bath, the shaft unit, and a drum.

Description

Cathode drum for electrolytic welding {CATHODE DRUM F0R ELECTROLYTIC DEPOSITION}

The present invention relates to a cathode drum for electrolytic welding, and more particularly, provided on the inside of the drum for electrolytic welding, and induces the inflowing cooling water to flow evenly to the inner surface of the drum, so that the surface temperature of the entire drum is maintained uniformly. It relates to a cathode drum for electrolytic welding that can obtain a high-quality plated thin film by doing so.

In general, in electroplating, a plating object is used as a cathode in a plating solution containing ions of the metal to be plated, and the metal or insoluble metal to be plated is configured as an anode, and the ions of the plated metal are reduced and deposited on the surface of the plated object. It is a plating method for plating, and since the plating material deposited by this electroplating method is a very thin plate, it is widely used in electric and electronic products such as batteries and printed circuit boards, and methods for quality improvement and mass production are developed and used. there is a fact

For plating such a thin plate (thin film), an electroplating apparatus capable of electrodeposition is used. The electroplating apparatus usually forms an electrolytic bath containing an electrolyte solution containing one or more metal salts including copper sulfate, and an anode in the electrolyte solution of the electrolytic bath. An anode is accommodated and provided, and a continuously rotating drum is provided at the top of the electrolytic cell, and by applying a current (+) (-) of an insoluble anode (+) to the anode and a cathode (-) to the drum, the applied As the plating metal in the electrolytic cell is oxidized by the current, the metal atoms are dissolved in the electrolyte solution as cations, and the metal ions (metal atoms) of the dissolved cations are charged on the surface of the drum (-), so that the plating thin film is electrodeposited.

As part of this, according to Korean Patent Publication No. 10-2018-0105476, a copper foil manufacturing apparatus includes: a copper foil manufacturing apparatus for manufacturing copper foil by applying a current to an electrolyte solution containing copper sulfate; and a plating device for additionally plating a shiny surface of the copper foil, wherein the plating device includes: a plating bath accommodating an electrolyte; a second anode immersed in the electrolyte of the plating bath to form a positively charged electrode; a first conducting roll installed outside the plating bath, receiving the copper foil of the manufacturing apparatus, injecting negative charges into the shiny surface, and injecting negative charges into the electrolytic solution of the plating bath; a second conducting roll that draws the copper foil additionally plated with a shiny side out of the electrolytic solution of the plating bath and injects negative charges into the surface; And a copper foil manufacturing apparatus including a liquid submerged roll immersed in the electrolytic solution of the plating bath and guiding the copper foil additionally plated with a shiny surface while passing the second anode between the first and second conducting rolls. there is.

In addition, according to Republic of Korea Patent Registration No. 10-2390011 (name: copper foil manufacturing apparatus having a cooling waterway), which was previously filed and registered by the applicant, an apparatus installed in an electrolytic bath to manufacture copper foil by electroplating, an electrolytic bath in which an electrolyte is accommodated, A plating unit provided with an anode having a positive charge in the electrolytic bath and providing a space for performing electroplating; A shaft member that allows a drum to be installed in the electrolytic cell and transmits rotational force to the drum; The electrodeposited surface provided at the center of the shaft member and provided around the outer drum is immersed in an electrolyte solution and is positioned adjacent to the anode as a cathode having a negative charge, so that copper foil is electrodeposited on the electrodeposited surface in an electrolytic manner; A cooling unit composed of a flow path penetrating the shaft member, a pair of guide members installed facing each other on both left and right sides of the drum, and a water pipe connecting the left and right guide members,

Cooling water is supplied to the guide member on the left side through a spray nozzle connected to the flow passage, the supplied cooling water moves along the water pipe to cool the electrodeposited surface, and the coolant passing through the water pipe is discharged along the flow passage through the guide member on the right side. it did

Such conventional plating devices do not have a cooling structure at all on the drum where the copper foil is electrodeposited or have a plating device equipped with a cooling water path. It was heated and the temperature was not made uniform, so it had a problem that a smooth plating thin film could not be obtained.

On the other hand, in the case of the plating device having the cooling water path, plating is performed while cooling the temperature on the outer plating surface of the drum while the cooling water is introduced into and discharged from the inside of the drum, so that the temperature on the plating surface can be properly maintained and relatively good quality of the plated thin film was obtained.

However, since the cooling water introduced into the drum is cooled while filling the entire inside of the drum, the load of the entire drum is greatly increased by the cooling water filled in the entire drum, and the increased load on the drum is related to the rotating shaft and the drum. It acts on the axis as it is, resulting in a problem of shortening the life of the device.

In addition, the cooling water filled inside the drum has a large temperature difference between the outer plating surface of the drum and the water bearing part in the center of the drum, making it impossible to maintain a uniform temperature on the outer plating surface of the drum. It hinders the formation of a plating film on the outer plating surface, resulting in insufficient problems in forming a high-quality plating film.

The problem to be solved by the present invention is to provide a cooling means that is installed on the top of an electrolytic cell filled with electrolyte and provided with an anode, and induces cooling water to flow in and out uniformly into the inside of a cathode drum on which a plating film is electrodeposited on the surface, The cooling means is provided on the inner drum of the cathode drum provided as an outer drum and an inner drum to evenly cool the inner drum, thereby maintaining a uniform temperature of the electrodeposited surface of the cathode drum on which the plating film is electrodeposited to obtain a high-quality plating film. .

Another problem to be solved by the present invention is to allow cooling water to flow in and out only to the inner drum of the cathode drum on which the plating film is electrodeposited, thereby reducing the overall load of the cathode drum by the cooling water and reducing the load acting on the shaft of the cathode drum. It can be greatly reduced to prolong the life of the device.

Another problem to be solved by the present invention is to install a plurality of electrodes at equal intervals in a waterway through which cooling water flows so that current is uniformly supplied to the entire electrodeposition surface.

Means according to the problem solving of the present invention is an electrolytic cell in which the electrolyte solution is contained and the anode is accommodated in the electrolyte solution; A shaft portion installed on top of the electrolytic cell; In the cathode drum for electrolytic welding including a drum installed adjacent to the anode of the electrolytic cell and rotated,

An outer drum having an electrodeposited surface on the outer run constituting the surface of the cathode drum, and a waterway bonded to the inner surface of the outer drum and through which cooling water flows are provided, and electrodes supplying current to the waterway are provided at equal intervals. There are technical features that include those consisting of an inner drum installed in a

The outer drum of the present invention is installed on a pair of discs installed on one side and the other side of the shaft portion, a pair of support plates located inside the pair of discs and installed on the shaft portion, and installed on the outer periphery of the pair of discs, An outer ring made of titanium having an electrodeposition surface installed on the surface to electrodeposit a plating film, a water pipe installed inside the pair of discs and into which cooling water flows, and a drain pipe installed on the opposite side of the water pipe to discharge the cooling water, A power supply unit installed between the pair of discs and the support plate and installed on the shaft to supply negative voltage, and a reinforcing rod installed through the pair of discs and the support plate in a perpendicular direction to support and reinforce the side plate and the support plate. There is a tukjing to do.

In addition, the inner drum of the present invention is provided with an outer pipe jointly installed on the inside of the outer ring of the outer drum and an inner pipe installed at a distance from the outer pipe to form a waterway, and cooling water is supplied to one side of the waterway. A water pipe is connected and a drain pipe for drainage is provided on the opposite side, and each of these two sides has a feature including that a side plate for blocking the water channel is provided.

The effect according to the means of the present invention is that the inner drum having a cooling means for expanding the cooling area so that the cooling water flowing in communication with the water pipe is evenly distributed and circulated inside the outer drum having an electrodeposition surface on which a plating film is electrodeposited on the surface. Provided, by lowering the temperature of the electrodeposited surface of the outer drum by lowering the temperature of the inner drum with the cooling water circulated, the temperature required for electrodeposition of the plating film on the electrodeposited surface is maintained to provide an effect of producing a thin film of good quality. will do

In addition, the effect according to the means of the present invention is provided so that the cooling water flowing into the cathode drum flows only into the inner drum, is dispersed out, and is circulated, so that the load of the entire cathode drum caused by the cooling water can be greatly reduced, so that the load acting on the shaft portion (Load) can also be greatly reduced, providing the effect of prolonging the life of the device.

On the other hand, the present invention installs a plurality of electrodes at equal intervals inside the waterway so that a uniform current is supplied to the entire electrodeposited surface, and the electrodes obstruct the flow of the cooling water to extend the residence time of the cooling water, thereby increasing the cooling efficiency. will provide an enhancing effect.

1 is a front cross-sectional view of a cathode drum for electrolytic welding according to the present invention;
Figure 2 is a longitudinal cross-sectional view of the cathode drum for electrolytic welding of the present invention
Figure 3 is an enlarged cross-sectional view of part "A" of Figure 1
Figure 4 is an enlarged longitudinal cross-sectional view of the inner drum of the cathode drum for electrolytic welding of the present invention

In the description of the present invention by way of example, the same or similar names and codes are used for components having the same or similar configurations and functions, and additional explanations that may be duplicated or limitedly interpret the meaning of the invention. may be omitted in describing the embodiments of the present invention.

Prior to a detailed description, even though it is described as a singular expression in this specification, in the light of the environment used without clearly distinguishing singular / plural in the use of Korean language and the environment for using common terms in the field, the concept of the invention It is used in the sense of including plural expressions unless it contradicts the interpretation or clearly means otherwise. In addition, 'comprises', 'has', 'has', 'includes', 'consists of', etc. described or may be described herein indicates the existence or addition of one or more other features or components or combinations thereof. It should be understood that it is not excluded in advance.

Hereinafter, the present invention will be described in detail based on the accompanying drawings.

1 is a front cross-sectional view of a cathode drum for electrolytic welding according to the present invention, FIG. 2 is a longitudinal cross-sectional view of the cathode drum for electrolytic welding according to the present invention, FIG. 3 is an enlarged cross-sectional view of part “A” of FIG. 1, and FIG. It is an enlarged longitudinal cross-sectional view of the inner drum of the cathode drum for welding.

As shown in Figure 1, the present invention is an electrolytic cell (1) in which the electrolyte solution is contained and the anode is accommodated in the electrolyte solution; A shaft portion 10 having a rotational shaft at the top of the electrolytic cell 1; It is composed of a cathode drum 100 installed adjacent to the anode of the electrolytic cell 1 and rotated by the rotation shaft of the shaft portion 10.

The electrolytic cell 1 is provided in the form of a tank having a space in which the electrolyte solution 2 is accommodated,

The electrolytic cell 1 is provided in the form of a tank having a space in which the electrolyte solution 2 is accommodated, and the electrolyte solution 2 is accommodated inside while the upper portion of the electrolytic cell 1 is open, and positive charges are applied to the electrolyte solution 2. A prominent anode (3) is provided.

The electrolytic bath 1 is provided with a circulation cycle in which the electrolyte 2 containing metal ions flows in and is filled, and the filled electrolyte 2 is discharged to circulate the electrolyte 2 accommodated in the electrolytic bath 1.

Therefore, the electrolytic cell 1 applies a positive voltage (+) to the anode 3 accommodated in the electrolyte 2 of the electrolytic cell 1 from the power supply, and by this positive voltage (+), the anode 3 becomes a positive electrode (+), so that the metal ions contained in the electrolyte solution (2) have a positive charge (+).

Therefore, when a negative electrode (-) having a negative charge (-) is accommodated in the electrolytic cell (1) contained in the electrolyte (2), the metal ions contained in the electrolyte (2) and having a positive charge (+) move to the negative electrode (-) The surface of the negative electrode (-) is charged and a metal plating film is formed on the negative electrode (-).

The shaft portion 10 is provided with a shaft 11 of a round bar, and the shaft 11 is provided in multiple stages 12 while going from the center to the left and right, and the multi-stage 12 is configured with a large outer diameter based on the center It is provided with a neck portion 12-1 and a small diameter portion 12-2 having a smaller outer diameter than the large diameter portion 12-1.

The shaft 11 has a flow path 13 on an inner diameter through which cooling water flows in and out from the outside.

The shaft 11 is provided with a pair of titanium linings 14 having excellent corrosion resistance in-line at both ends of the large-diameter portion 12-1 of the multi-stage 12, and the titanium linings 14 It is provided to be bonded to the cathode drum 100.

Therefore, during the electrolytic deposition operation, the shaft 11 is protected by preventing corrosion from the electrolyte 2 contained in the electrolytic cell 1 by the titanium lining 14 .

The shaft 11 is provided with a pair of copper linings 15 having excellent conductivity in line at the end of the titanium lining 13.

Here, a gold plating layer in which gold is plated may be provided on the inner circumferential surface of the copper lining 15 at an electrical contact portion to improve conductivity.

One end of the shaft portion 10 is connected to a power transmission means (not shown), that is, a rotation motor, and rotates the cathode drum 100 while controlling rotation by a controller.

The cathode drum 100 is provided with an outer drum 110 having an electrodeposited surface on the surface and an inner drum 120 bonded to the inner surface of the outer drum 110.

The outer drum 110 is a pair of disks 111 installed on one side and the other side of the shaft portion 10, a pair of disks 111 located inside the pair of disks 111 and installed on the shaft portion 10 of the support plate 112, an outer ring 113 installed on the outer periphery of the pair of discs 111 and installed on the surface to electrodeposit a plating film, and installed on the inside of the pair of discs 111 and inflow of cooling water and a water pipe 114 to flow out, a power supply unit 115 installed between the pair of disks 111 and the support plate 112 and installed on the shaft portion 10 to supply negative voltage, the pair of It is provided with reinforcing rods 116 that are installed through the disc 111 and the support plate 112 in a direction at right angles to reinforce the pair of discs 111 and the support plate 112.

As shown in FIG. 2, a pair of discs 111 are formed in a circular plate shape, and at the center of the circular plate, an insertion hole 111-1 inserted into and fixed to the shaft portion 10, and the insertion hole 111 -1) It is provided with a plurality of fastening holes 111-2 at predetermined intervals and arrangements in the outer direction, and a plurality of brackets 111-3 at predetermined intervals on the inner surface of the circular plate.

Here, the pair of disks 111 are made of a metal material.

The pair of disks 111 are fixedly installed at one end and the other end of the large diameter part 12-1 of the multi-stage 12 provided on the shaft 11 of the shaft part 10, respectively, so that the outer drum 110 to form the outer surface of

The pair of support plates 112 are formed in a circular plate shape, and at the center of the circular plate, an insertion hole 112-1 inserted and fixed to the shaft portion 10, and an insertion hole 112-1 outwardly It is provided with a plurality of fastening holes 112-2 at predetermined intervals and arrangements.

Here, the pair of support plates 112 are provided with a size having a smaller diameter than the diameter of the pair of disks 111, and are provided with a metal material.

The insertion hole 112-1 and the plurality of fastening holes 112-2 are the same as the insertion hole 111-1 and the plurality of fastening holes 111-2 provided in the pair of discs 111. It will be provided in a position on the ship.

Therefore, the pair of support plates 112 are installed inside the pair of discs 111 and are fixedly installed at the center of the large diameter portion 12-1 of the multi-stage 12 of the shaft portion 10.

The outer ring 113 is provided in a circular shape and is provided in a cylindrical shape installed on the outer periphery of a pair of discs 111, the outer ring 113 is made of titanium, and its surface is an electrodeposited surface 117 on which thin plates are electrolyzed. ) will be provided.

Therefore, the outer ring 113 is provided with one outer drum 110 by fastening and fixing to the edge end of the pair of disks 111 with bolts, which are separate fastening means.

As shown in FIG. 3, the water pipe 114 is radially fastened and fixed with a bracket 111-3 provided on the inner surface of a pair of discs 111 attached to the shaft 11 of the shaft portion 10. However, one end is fastened to be in communication with the flow path 13 provided on the inner diameter of the shaft 11, and the other end is provided with a spray nozzle 114-1 and fixedly installed to the inner drum 120 to be described later.

Therefore, the water pipe 114 discharges the cooling water introduced from one side of the flow path 13 of the shaft 11 to the flow path 13 provided on the other side through the inner drum 120 so that the temperature of the inner drum 120 is maintained. will cool

The power supply unit 115 is installed between the pair of discs 111 and the support plate 112, one end of which is fixedly connected to the large-diameter portion 12-1 of the shaft portion 10, and the other end of the inner side to be described later. It is connected to the drum 120 and provided.

That is, in the present invention, current is supplied to the copper lining 15 installed on the shaft 11, and this current is supplied to the power supply unit 115 through the shaft, and the inner drum 120 and the outer ring 113 connected to the power supply unit ) are sequentially supplied.

The power supply unit 115 is provided in either the form of a wire or a metal rod, and is radially connected to the inner drum 120 to be installed.

Therefore, the power supply unit 115 transfers the current applied from the shaft unit 10 to the inner drum 120.

The reinforcing bar 116 is provided as a metal bar made of iron having fastening parts at one end and the other end, and fastening holes 111- 2), through-coupled to (112-2), respectively, and fastened and fixed on the outer surface of the pair of disks 111 with a nut.

Therefore, since the pair of discs 111 and the support plate 112 are coupled by the reinforcing rods 116, the total load of the outer drum 110 can be greatly reduced, and the entire cathode drum is also reinforced.

1 and 4, the inner drum 120 is provided with a pair of outer tubes 121 and an inner tube 122 having a space in the center, the pair of outer tubes 121 and The inner tube 122 is provided with an insertion hole 121-1 in the outer tube 121 and a screw hole 122-1 in the inner tube 122 in a uniform arrangement at predetermined intervals, respectively, One side and the other side of the pair of outer tubes 121 and inner tubes 122 are provided by combining with a pair of ring-shaped side plates 123.

The side plate 123 blocks the water passage 130 provided between the outer pipe and the inner pipe to prevent the outflow of cooling water and reinforces the inner drum to maintain its shape.

In the inner drum 120, electrodes 124 are installed in insertion holes 121-1 and screw holes 122-1 provided in the outer tube 121 and the inner tube 122, respectively.

The electrode 124 is installed by being screwed into the screw hole 122-1 in a state where a threaded portion is formed at one end and inserted into the insertion hole 121-1, and the opposite end of the threaded portion is installed through the insertion hole 121-1. It maintains the same height as the top of 1), and the top contacts the inner surface of the outer ring 113 to supply current. Before and after screwing, an airtight retainer or packing is inserted into the insertion hole, and the insertion hole and the vicinity of the electrode are fixed and airtight by soldering or the like.

In the present invention, the electrodes 124 are installed at equal intervals so that a uniform current is multiplied throughout the outer ring, so that the thin plate always maintains a uniform thickness, furthermore, there are no defects and the quality is greatly improved. .

In addition, in the present invention, the screw hole 122-1 and the insertion hole 121-1 can be formed by pre-processing before drum molding or post-processing after drum molding, and the electrode can be assembled and manufactured by screwing. There is also an advantage of ease, and in particular, the electrode serves to maintain the shape of the waterway.

In the drawing, reference numeral 124-1, which has not been explained, is a cladding tube. The sheath tube protects the electrode, prevents electricity from flowing to the cooling water, and maintains the waterway 130 by supporting the outer tube and the inner tube.

Also, reference numeral 122-2 denotes a waterproof layer, which prevents coolant from leaking through screw holes.

Meanwhile, in the present invention, cooling water is supplied to the water conduit 130 through the water pipe 114, and the cooling water passes through the conduit 130 and exits to the drain conduit 13-1 through the drain pipe 114-1 on the opposite side. And, the drain pipe 114-1 is radially arranged in the same way as the water pipe 114 and is connected to the drain pipe 13-1.

The electrode 124 plays a role of efficiently cooling in addition to supplying current.

Since the cooling water flowing into the water line 130 is evenly distributed throughout the inside of the inner drum 120 and slowly flows out while being resisted by numerous electrode rods 124, the inner drum 120 is generated by electrical characteristics. Since the internal temperature due to Joule's heat is lowered, the temperature of the electrodeposited surface 117 of the outer ring 113 of the outer drum 110 is lowered, so that the electrodeposited surface 117 maintains an appropriate temperature. Therefore, it is possible to obtain a high-quality plated thin film.

In addition, since the cooling water flowing into the cathode drum 100 from the water pipe 114 flows in and out only through the inner drum 120, the total load acting on the cathode drum 100 by the cooling water can be greatly reduced. This reduces the load acting on the shaft portion 10 for rotating the cathode drum 100, thereby extending the life of the device.

As described above, those skilled in the art to which the present invention pertains will be able to understand that the present invention can be embodied in other specific forms without changing its technical spirit or essential features. Therefore, all of the embodiments described above should be understood as illustrative and not limiting. The scope of the present invention should be construed as including all changes or modifications derived from the meaning and scope of the claims to be described later and their equivalent concepts rather than the above detailed description included in the scope of the present invention.

1: Electrolyte 2: Electrolyte
3: anode 10: shaft part
11: shaft 14: titanium lining
15: copper lining 100: cathode drum
110: external drum 111; negative
112: support plate 113; paddle
114: water pipe 115: power supply
116: reinforcing bar 117: electrodeposited surface
120: inner drum 121; outer tube
122: inner tube 123: side plate
124: electrode

Claims (3)

An electrolytic cell in which an electrolyte solution is contained and an anode is accommodated in the electrolyte solution; A shaft portion installed on top of the electrolytic cell; In the cathode drum for electrolytic welding including a drum installed adjacent to the anode of the electrolytic cell and rotated,
An outer drum having an electrodeposition surface on the outer run constituting the surface of the cathode drum;
It is bonded to the inner surface of the outer drum, has a waterway through which cooling water flows, and includes an inner drum in which electrodes for supplying current to the waterway are installed at equal intervals,
The outer drum is a pair of disks installed on one side and the other side of the shaft,
A pair of support plates located inside the pair of discs and installed in the shaft portion;
An outer ring made of titanium provided with an electrodeposition surface installed on the outer periphery of the pair of disks and installed on the surface to electrodeposit a plating film;
A water pipe installed inside the pair of disks and through which cooling water flows in and a drain pipe installed on the opposite side of the water pipe and discharging the cooling water;
A power supply unit installed between the pair of discs and the support plate and installed on the shaft to supply negative voltage;
A cathode drum for electrolytic welding comprising a reinforcing bar installed through the pair of discs and the support plate in a direction perpendicular to each other to support and reinforce the side plate and the support plate. delete According to claim 1,
The inner drum is provided with an outer tube jointly installed inside the outer ring of the outer drum and an inner tube installed at a distance from the outer tube to form a waterway,
A water pipe for supplying cooling water is connected to one side of the water passage and a drain pipe for drainage is provided on the opposite side,
A cathode drum for electrolytic welding including one provided with a side plate for blocking the water channel on each of these both sides.

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