KR20230129966A - Fixing equipment of cathode plate for electrolytic-polishing and electrolytic-polishing apparatus including the same - Google Patents

Abstract

An embodiment relates to a fixing member of a cathode plate for electrolytic polishing, which has excellent strength but reduced weight, and an electrolytic polishing apparatus including the same. The fixing member of a cathode plate for electrolytic polishing according to the embodiment may comprise a frame unit and a fastening unit that are coupled to each other. The frame unit may include a frame portion, a frame fixing portion extending from one side of the frame portion, and a frame coupling portion extending from the other side of the frame portion. The fastening unit may include a fastening frame inserted into the frame coupling portion, a fastening fixing portion formed on one end of the fastening frame, and a tightening portion formed on the other side of the fastening frame. The frame portion of the frame unit may include a cavity between a first horizontal frame and a second horizontal frame joined to each other.

Description

Cathode plate fixing member for electrolytic polishing and electrolytic polishing device including the same

The embodiment relates to a negative plate fixing member for electrolytic polishing and an electrolytic polishing device including the same.

Electrolytic-polishing uses a metal product soluble in an electrolyte as an anode and a metal insoluble in an electrolyte as a cathode, and applies a voltage between the anode and cathode to apply electrolytic polishing to the metal. This is a method of polishing the surface of a metal product by causing electrolysis on the surface of the product.

Generally, to polish a metal using electrolytic polishing, an electrolytic cell is filled with an electrolyte, the metal to be polished is installed as the anode, a metal that does not dissolve in the electrolyte is installed as the cathode, and direct current is applied to the anode and cathode.

When electrolytic polishing progresses, a high-viscosity liquid layer (viscous layer) containing a large amount of metal ions dissolved from the anode surrounds the electrolytic polishing target material, which is the anode. In a liquid layer saturated with metal ions, the metal no longer dissolves and forms a high anode potential, so it actively combines with oxygen to form an oxide film. At this time, dissolved metal ions are mainly accumulated in the concave part of the metal surface, and in the concave part, the movement and diffusion of metal ions are low and electricity does not conduct well, so the metal does not dissolve. On the other hand, since the metal ion layer is formed thinly in the convex part of the metal surface of the electrolytic polishing target material, current is concentrated and easily dissolves the metal surface, making the overall metal surface of the electrolytic polishing target material smooth.

Meanwhile, electrolytic polishing is performed through an electrolytic polishing device. In the electrolytic polishing device according to the prior art, an electrolytic polishing target material with a positive potential is placed in an 'electrolytic cell' and a negative electrode plate is arranged to be spaced apart from the polishing surface of the electrolytic polishing target material. . Since the cathode plate must be changed according to the shape of the electrolytic polishing target material, it is installed in the electrolytic cell after assembly according to the shape of the electrolytic polishing target material.

The cathode plate assembled as above must be installed in the electrolytic cell so as not to come into direct contact with the electrolytic polishing target material to prevent electrical short circuit. However, the cathode plate must be placed close to the electrolytic polishing target material while maintaining a certain distance to enable uniform polishing and improve electrolytic polishing quality.

However, in the prior art, it was not possible to firmly arrange the cathode plate to maintain a constant distance from the electrolytic polishing target material.

Accordingly, we applied for an invention in which a cathode holder is mounted on a tab hole (or bolt hole) formed in the electrolytic polishing target material, and the cathode plate is uniformly fixed on the cathode holder while being close to one side of the electrolytic polishing target material while insulated from the cathode holder. It has been patented (see Korean Patent No. 10-1183218, hereinafter referred to as ‘Prior Patent 1’).

Afterwards, electrolytic polishing of the electrolytic polishing target material is performed through a grid-shaped cathode plate in the form of a module pre-manufactured in consideration of the specifications of the electrolytic polishing target material, thereby significantly shortening the installation time of the negative plate for electrolytic polishing, thereby reducing the overall electrolytic polishing time. An invention that can shorten the time of the polishing process and increase the uniformity of electropolishing quality has been applied for and registered as a patent (Korean Patent No. 10-1769924, hereinafter referred to as 'Prior Patent 2').

Figure 1 is a conceptual diagram of an electrolytic polishing device according to the prior art to which prior patent 2 is applied.

In the electrolytic polishing device according to the prior art, a grid-shaped cathode plate can be mounted on the polishing part of the electrolytic polishing target material using a cathode holder.

For example, the cathode holder is screwed to the bolt hole or tap hole inherent in the electrolytic polishing target material, and with an insulating plate (not shown) interposed, a grid-shaped cathode plate is mounted on the cathode holder, and the fixing member, For example, it is fixed and mounted using a C-type clamp.

At this time, the grid-type cathode plate includes a horizontal cathode plate arranged in the horizontal direction and a vertical cathode plate arranged in the vertical direction, and the horizontal cathode plate and the vertical cathode plate are integrated by a fixing member such as a rivet, bolt, or C-type clamp to correspond to the polishing unit. It can be pre-manufactured and prepared in modular form in shape and size and then mounted on the cathode holder fixture.

However, recently, electrolytic polishing technology is mainly applied to vacuum chambers and their components used in the display industry such as LCD, LED, and OLED, including sputtering, CVD, vacuum deposition, and film forming equipment.

For example, in the case where the electrolytic polishing object is a chamber for OLED or a MOCVD chamber for LED, the weight is often huge, ranging from hundreds of kg to several tons. The grid-shaped cathode plate for electropolishing such a large electrolytic polishing target material is also becoming large, and the weight of the grid-shaped cathode plate reaches hundreds of kg. The increase in the weight of the grid-shaped cathode plate increases the difficulty of the electropolishing process and causes defects in the electropolishing process. may occur.

Meanwhile, C-type clamps are used among the fixing members used as a means of connecting grid-shaped cathode plates in electrolytic polishing. Conventional C-type clamps are manufactured using a casting method, so there is a limit to reducing weight despite improvements in material.

In addition, the conventional C-type clamp includes a frame and a fastening part that is screwed to the frame, but when the frame is manufactured in a thin shape to reduce the weight of the C-type clamp, it faces a technical contradiction in that its strength is weak and twisting or bending may occur. .

In addition, in order to reduce the weight occupied by the fixing part of the conventional C-type clamp, when the fixing part of the fastening part is formed narrowly, it faces a technical contradiction in that the fixing force is lowered.

As shown in FIG. 1, numerous fixing members are required as coupling means for the grid-type cathode plate, so reducing the weight of the fixing members is an important technical issue. Also, reducing the weight of the fixing members used as coupling means in the cathode holder is also an important issue. .

One of the technical challenges of the embodiment is to provide a cathode plate fixing member for electrolytic polishing that has excellent strength while reducing the weight of the fixing member used as a coupling means for a grid-shaped negative electrode plate used in electrolytic polishing, and an electrolytic polishing device including the same.

In addition, one of the technical tasks of the embodiment is to provide a negative electrode plate fixing member for electrolytic polishing that can reduce the weight while increasing fixing force by securing a wide area occupied by the fixing part of the negative electrode plate fixing member for electrolytic polishing, and an electrolytic polishing device including the same. It is Ham.

The technical problems of the embodiments are not limited to those described in this item, but include those that can be understood through the description of the invention.

The cathode plate fixing member for electrolytic polishing according to the embodiment may include a frame unit 122 and a fastening unit 124 that are coupled to each other.

The frame unit 122 includes a frame portion 122a, a frame fixing portion 122b extending to one side of the frame portion 122a, and a frame coupling portion extending to the other side of the frame portion 122a ( 122c) may be included.

The fastening unit 124 includes a fastening frame 124a inserted into the frame coupling portion 122c, a fastening fixture 124b formed on one end of the fastening frame 124a, and a fastening fixture 124b on the other side of the fastening frame 124a. It may include a formed fastener (124c).

The frame portion 122a of the frame unit 122 may include a cavity C between the first horizontal frame 122a1 and the second horizontal frame 122a2 joined to each other.

The frame portion 122a of the frame unit 122 includes a first curved frame 122r1 disposed between the first horizontal frame 122a1 and a second curved frame disposed between the second horizontal frame 122a2. It may include (122r2).

The fastening fixture 124b may have a cup shape at one end of the fastening frame 124a.

The fastening unit 124 may include a fastening locking portion 124d formed at the extreme end of one end of the fastening frame 124a.

The fastening locking portion 124d may include a locking portion body 124d1 and a locking portion extension 124d2 extending from the locking portion body.

The second diameter D2 of the engaging portion extension 124d2 may be larger than the first diameter D1 of the engaging portion body 124d1.

The fastening unit may include a fastening locking portion that passes through the center of the fastening fixture and is disposed at an extreme end of one end of the fastening frame.

The fastening locking portion may include a hollow locking body having a groove therein and a locking portion extension extending laterally from an end of the locking body.

The second diameter of the engaging portion extension portion formed integrally with the engaging portion body may be larger than the first diameter of the engaging portion body.

The tightening part includes a tightening part body penetrating the other end of the fastening frame, and a tightening part locking part extending in the longitudinal direction at both ends of the tightening part body, and the width of the tightening part catching part is wider than the tightening part body. It can be big.

The fastening engaging portion may include a circular hollow engaging body having a groove therein and a engaging extending portion extending radially laterally from a circular outer end of the circular hollow engaging body.

The second diameter of the circular outline of the engaging portion extension, which is formed integrally with the circular hollow engaging portion body, may be larger than the first diameter of the circular outer portion of the engaging portion body.

The electrolytic polishing device according to the embodiment may include a first cathode plate and a second cathode plate for electrolytic polishing, and one of the cathode plate fixing members for electrolytic polishing that couples the first cathode plate and the second cathode plate.

According to the embodiment, the technical effect of providing a cathode plate fixing member for electrolytic polishing with excellent strength while reducing the weight of the fixing member used as a coupling means for a grid-type negative electrode plate used in electrolytic polishing and an electrolytic polishing device including the same is achieved. there is.

In addition, according to an embodiment, a negative electrode plate fixing member for electrolytic polishing can secure a wide area occupied by the fixing part area to increase fixing force while reducing weight, and a technical method capable of providing an electrolytic polishing device including the same. It works.

In particular, according to the embodiment, by using a cathode plate fixing member for electrolytic polishing that is lightweight and has excellent strength and fixing power, when tilting the electrolytic polishing target material and the lattice-type cathode plate mounted thereto to block or remove air pockets, it is more effective than before. The weight is reduced, the bonding strength between the negative electrode plates of the grid-shaped negative electrode plate is improved, and the grid-shaped negative electrode plate can be more firmly coupled to the negative electrode holder.

Additionally, according to an embodiment, when tilting to one side and then tilting to the other side to change direction, the efficiency of the tilting process can be improved to eliminate air pockets due to the light weight.

In addition, according to the embodiment, the process and product reliability are greatly improved because short circuits do not occur due to contact between the grid-shaped negative electrode plate and the electrolytic polishing target material due to the stronger bond between the grid-shaped negative electrode plate itself and the electrolytic polishing target material and the grid-shaped negative electrode plate. There is a special technical effect that allows the electropolishing process to proceed.

In addition, according to the embodiment, the frame portion 122a of the frame unit 122 of the cathode plate fixing member for electrolytic polishing has a cavity C between the first horizontal frame 122a1 and the second horizontal frame 122a2 joined to each other. By including it, there is a technical effect of providing a negative plate fixing member for electrolytic polishing with excellent strength while reducing weight.

In particular, in an embodiment, the cavity C may be a closed space filled with air. Through this, fluid may not flow from the outside into the cavity C of the frame portion 122a of the frame unit 122.

Therefore, according to the embodiment, the fixing member 120 for electrolytic polishing with a cavity (C) can provide a fixing member for an electrolytic polishing cathode plate with excellent strength while reducing weight, and in particular, when immersed in an electrolyte solution, in addition to the effect of buoyancy The air sealed inside the cavity (C) of the frame unit 122 of the electrolytic polishing fixing member 120 receives an upward upward force due to the density difference between the electrolyte and the air within the electrolyte, causing the weight to increase. There are special technical effects that are reduced.

The technical effects of the embodiments are not limited to those described in this item, but include those that can be understood through the description of the invention.

1 is a conceptual diagram of an electrolytic polishing device according to the prior art.
Figure 2 is a diagram showing an electrolytic polishing device according to an embodiment.
Figure 3a is a conceptual diagram showing the object being tilted up and down during the first section.
Figure 3b is a conceptual diagram showing the object being tilted up and down during the second section.
Figure 4 is a three-dimensional plan view of a negative electrode plate fixing member for electrolytic polishing according to an embodiment.
Figure 5 is a cross-sectional view taken along line A1-A1 of the negative electrode plate fixing member for electrolytic polishing according to the embodiment shown in Figure 4.
Figure 6 is a perspective view of a negative electrode plate fixing member for electrolytic polishing according to an embodiment.
Figure 7 is an enlarged view of the fixing part of the fastening part in the fixing member for the negative electrode plate for electrolytic polishing according to the embodiment shown in Figure 6.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the attached drawings. However, the technical idea of the present invention is not limited to some of the described embodiments, but may be implemented in various different forms, and as long as it is within the scope of the technical idea of the present invention, one or more of the components may be optionally used between the embodiments. It can be used by combining and replacing.

In this specification, the singular can also include the plural unless specifically stated in the phrase, and when described as “at least one (or more than one) of B and C”, it can be combined with A, B, and C. It may contain one or more of all possible combinations. And, when a component is described as being 'connected', 'coupled' or 'connected' to another component, the component is not only directly connected, coupled or connected to that other component, but also is connected to that component. It may also include cases where other components are 'connected', 'coupled', or 'connected' by another component between them. In addition, when described as being formed or disposed "on top or bottom" of each component, top or bottom refers not only to cases where two components are in direct contact with each other, but also to one component. This also includes cases where another component described above is formed or placed between two components. Additionally, when expressed as “top (above) or bottom (bottom),” it can include the meaning of not only the upward direction but also the downward direction based on one component.

In the embodiment, the fixing member is mainly described as being used to connect negative electrode plates to each other to form a lattice-shaped negative electrode plate, but is not limited thereto, and includes being used to couple the negative electrode plate to the negative electrode holder. .

(Example)

Figure 2 is a perspective view of an electrolytic polishing device 1000 according to an embodiment.

Referring to FIG. 2, the electrolytic polishing device 1000 according to the embodiment includes an electrolytic cell 20 containing an electrolytic solution 25, an electrolytic polishing target material 11 immersed in the electrolytic solution of the electrolytic cell 20, and the electrolytic polishing device 1000 according to the embodiment. It may include a negative electrode plate 100 mounted on the electrolytic polishing target material 11.

The electrolytic cell 20 may contain an electrolyte solution 25 capable of electrolytically polishing the electrolytic polishing target material 11. The electrolytic cell 20 has an empty space formed inside, and this empty space can be filled with the electrolyte solution 25.

The electrolytic cell 20 may vary depending on the size or shape of the electrolytic polishing target material 11. The electrolytic cell 20 may have a rectangular shape, and the space formed therein may also have a rectangular shape, but this is not limited. Electrolyzer 20 may have a bottom and sides extending vertically along an edge of the bottom. An empty space is formed by these bottom and side parts, and this space can be filled with the electrolyte solution 25.

The negative plate 100 can receive negative power provided from the negative terminal of a rectifier (not shown).

The negative electrode plate 100 may be arranged to be spaced apart from the electrolytic polishing target material 11 shown in FIG. 2. For example, the cathode plate 100 is formed by attaching a cathode holder (not shown) to a predetermined bolt hole or tab hole existing in the electrolytic polishing target material 11, interposing an insulating material on the cathode holder, and forming the cathode plate. (100) can be mounted.

The negative electrode plate 100 and the negative electrode holder may be fixed by the negative electrode plate fixing member 120 for electrolytic polishing according to the embodiment.

The negative electrode plate 100 may be disposed on the entire area of the electrolytic polishing target material 11. For example, the negative electrode plate 100 may include a plurality of horizontal plates 102 and vertical plates 104 coupled to each other in a grid shape. The cathode plate 100 is connected to the cathode busbar plate 105 to receive negative (-) power from a rectifier, and the electrolytic polishing target material 11 is connected to the anode busbar plate (not shown) to operate the rectifier. Positive (+) power can be received from .

The cathode plate 100 and the cathode busbar plate 105 may be fixed by a cathode plate fixing member 120 for electrolytic polishing according to the embodiment.

Referring to FIG. 2, since the electrolytic polishing target material 11 is large, the electrolytic polishing target material 11 can be lifted and lowered by a hoist device (not shown) of a crane device. The crane device may include a hoist unit. The hoist part is connected to the electrolytic polishing target material 11 and can drive the electrolytic polishing target material 11 to tilt up and down or move in the horizontal direction. The hoist unit is in remote communication with a remote controller and can be driven by a communication signal from the remote controller.

For example, after the electrolytic polishing target material 11 is fastened by the first connection wire 170 and the second connection wire 172 connected to the hoist device, the electrolyte solution 25 in the electrolyzer 20 is driven by the hoist device. It can be received in or taken out from the electrolyte solution (25).

By a hoist device, the electrolytic polishing target material 11 may be moved from the previous process to the electrolytic cell 20 for electrolytic polishing, or may be moved from the electrolytic cell 20 to the next processing device for a cleaning process, etc.

Meanwhile, in the case of recent electrolytic polishing target materials such as OLED chambers or MOCVD chambers for LEDs, they have a polyhedral shape such as a hexahedron, so an empty space is formed inside the chamber for the semiconductor deposition process, etc., and the inner top has a corner area, so the chamber shape is When electropolishing is performed on the electrolytic polishing target material while immersed in an electrolyte solution, an air pocket is formed in the inner upper corner area of the electrolytic polishing target material.

These air pockets may prevent the electrolyte from coming into contact with the electrolytic polishing target material, preventing electrolytic polishing from proceeding, resulting in a decrease in electrolytic polishing quality.

For example, when the electrolytic polishing target material is immersed in an electrolyte solution and then positive (+) power is applied to the electrolytic polishing target material and negative (-) power is applied to the negative electrode plate, oxygen (O ₂ ) is released from the electrolytic polishing target material, which is the anode. Gas is generated and hydrogen (H ₂ ) gas is generated on the negative electrode plate placed inside the electrolytic polishing target material, and oxygen gas and hydrogen gas float in the electrolyte solution and rise upward.

At this time, the oxygen gas and hydrogen gas generated on the outside of the electrolytic polishing target material are vaporized into the air through the surface of the electrolyte solution, but the oxygen gas and hydrogen gas generated in the inner space of the electrolytic polishing target material are blocked at the upper inner corner of the electrolytic polishing target material and are external to the electrolytic polishing target material. It cannot evaporate into the air and causes air pockets to form in the corner area inside the electrolytic polishing target material.

In particular, when the upper side of the electrolytic polishing target material is completely blocked or the electrolytic polishing target material has a three-dimensional shape such as a cube, the occurrence of such air pockets is frequent.

These air pockets prevent the electrolyte from contacting the inner surface of the upper side of the electrolytic polishing target material, which ultimately prevents electrolytic polishing of the upper inner surface of the electrolytic polishing target material, causing a fatal problem of deterioration in polishing quality.

To solve this problem, internal technology uses hoses connected to multiple vacuum pumps to be installed at the top of the electrolytic polishing target material to discharge gas. However, there is a problem that it takes a lot of time to discharge the gas by the vacuum pump, the vacuum pump frequently breaks down, causing the inconvenience of having to replace the vacuum pump from time to time, and the cost also increases significantly. In particular, it is almost impossible to completely remove air pockets that continue to occur at the inner corners of the electrolytic polishing target material, and a method to block or prevent the occurrence of air pockets themselves is needed.

Accordingly, according to the embodiment, the electrolytic polishing target material 11 may be connected to the first connection wire 170 and the second connection wire 172 of a crane device (not shown) and then immersed in the electrolytic bath 20. Thereafter, the electrolytic polishing target material 11 may be tilted in the vertical direction in the electrolyte 25 of the electrolytic cell 20 by a crane device. Additionally, the electropolishing target material 11 can be moved in the horizontal direction by the crane device. In this way, as the electrolytic polishing target material 11 is tilted vertically or moved in the horizontal direction, the gas in the air pocket formed on the upper side of the electrolytic polishing target material 11 escapes to the outside of the electrolytic polishing target material 11. By vaporizing into the air, air pockets inside the electrolytic polishing target material 11 can be removed. Accordingly, defects that occur due to air pockets not performing electrolytic polishing on the electrolytic polishing target material 11 in contact with the air pockets can be prevented, thereby improving product quality.

According to the embodiment, air pockets can be easily removed by simply tilting the electropolishing target material 11 in the vertical direction or moving it horizontally during electrolytic polishing, and process time and cost can be significantly shortened.

For example, FIG. 3A is a conceptual diagram showing the object 1 being tilted up and down during a first section, and FIG. 3B is a conceptual diagram showing the object 1 being tilted up and down during the second section.

For example, referring to FIG. 3A, in the embodiment, the crane device may adjust the electrolytic polishing target material 11 in a horizontal position so that the left side of the electrolytic cell 20 is positioned lower than the right side during the first section of one cycle. there is.

Next, referring to FIG. 3B, in the embodiment, the crane device can adjust the electropolishing target material 11 in a horizontal position so that the right side of the electrolytic cell 20 is positioned lower than the left side during the second section of one cycle. .

Through this, the embodiment can allow the air pocket formed on the inner upper side of the electrolytic polishing target material 11 to be discharged to the outside of the electrolytic polishing target material 11.

Through this operation, the electrolytic polishing target material 11 is tilted up and down, so that the air pocket formed inside the electrolytic polishing target material 11 can be discharged to the outside of the electrolytic polishing target material 11.

According to the embodiment, by periodically tilting the electrolytic polishing target material 11 up and down, the air pockets formed inside the electrolytic polishing target material 11 are easily removed, and the process time and cost are significantly shortened, and the air pockets are formed. Electrolytic polishing defects can be prevented.

In addition, the embodiment may tilt the electrolytic polishing target material 11 in the vertical direction and move it in the horizontal direction to remove air pockets formed inside the electrolytic polishing target material 11. Movement in the horizontal direction may mean round-trip movement in the horizontal direction.

Accordingly, according to the embodiment, there is a technical effect of providing an electrolytic polishing device that can block or remove the formation of air pockets and an electrolytic polishing method using the same.

For example, according to the embodiment, when the object is tilted vertically or moved horizontally, the gas in the air pocket formed on the upper side inside the object escapes to the outside of the object and is vaporized into the air, creating an air pocket inside the object. can be removed Through this, product quality can be improved by preventing defects that occur due to air pockets not performing electrolytic polishing on the target material in contact with the air pocket.

Additionally, according to the embodiment, there is an advantage that air pockets can be easily removed by simply tilting the target material in the vertical direction or moving it horizontally during electropolishing, thereby significantly reducing process time and cost.

Meanwhile, in the prior art, the C-type clamp, which is one of the fixing members of the cathode plate for electrolytic polishing, has been manufactured using a casting method.

On the other hand, the C-type clamp used when assembling the cathode plate of electrolytic polishing must be light in weight, but there is a disadvantage in that it is difficult to reduce the weight of the C-type clamp using the existing casting manufacturing method. In addition, the electrolyte of the electrolytic polishing device is a strong acid, which is a mixture of phosphoric acid and sulfuric acid, and since the main raw material of the conventional C-type clamp is cast steel, which is vulnerable to the strong acid electrolyte, the product has a short lifespan and must be discarded after several uses.

As previously described, one of the technical problems of the embodiment is a cathode plate fixing member for electrolytic polishing that reduces the weight of the fixing member used as a coupling means for the grid-shaped negative electrode plate used in electrolytic polishing and has excellent strength, and electrolytic polishing including the same. The purpose is to provide a device.

In addition, one of the technical tasks of the embodiment is to provide a negative electrode plate fixing member for electrolytic polishing that can reduce the weight while increasing fixing force by securing a wide area occupied by the fixing part of the negative electrode plate fixing member for electrolytic polishing, and an electrolytic polishing device including the same. It is Ham.

Figure 4 is a plan three-dimensional view of the negative electrode plate fixing member 120 for electrolytic polishing according to an embodiment for solving the above technical problem, and Figure 5 is a plan view of the negative electrode plate fixing member 120 for electrolytic polishing according to the embodiment shown in Figure 4. This is a cross-sectional view along line A1-A1.

Referring to FIG. 4, the negative electrode plate fixing member 120 for electrolytic polishing according to the embodiment may include a frame unit 122 and a fastening unit 124 that are coupled to each other.

The frame unit 122 includes a frame portion 122a, a frame fixing portion 122b extending to one side of the frame portion 122a, and a frame coupling portion extending to the other side of the frame portion 122a ( 122c) may be included.

The frame unit 122 may have a 'L' shape or a 'C' shape, but is not limited thereto.

The fastening unit 124 includes a fastening frame 124a inserted into the frame coupling portion 122c, a fastening fixture 124b formed on one end of the fastening frame 124a, and a fastening fixture 124b on the other side of the fastening frame 124a. It may include a formed fastener (124c).

Each component of the frame unit 122 and the fastening unit 124 may be formed of the same material, but is not limited thereto.

The material of the cathode plate fixing member 120 for electrolytic polishing according to the embodiment may be stainless steel, which is resistant to acids, and has the advantage of being lighter and more resistant to acid corrosion than a cast C-type clamp, and thus having a long lifespan.

The manufacturing method of the frame unit 122 in the embodiment will be described as follows. A frame formed by processing a cold rolled steel sheet through shearing, press forming, bending, etc. to form a frame portion 122a, a frame fixing portion 122b extending to one side of the frame portion 122a, and a frame extending to the other side of the frame portion 122a. The frame unit 122 can be manufactured by forming a pair of left and right coupling portions 122c and then joining them by welding, etc. An assembly hole may be formed in the frame coupling portion 122c through screw processing.

In the embodiment, the fastening unit 124, the fastening frame 124a inserted into the frame coupling portion 122c, may be in the form of a rod with threads, but is not limited thereto.

A tightening part 124c that functions as a turning handle may be formed on the other side of the fastening frame 124a.

After the fastening frame 124a is inserted into the frame coupling part 122c, a fastening fixing part 124b that functions as a cup-shaped pusher may be assembled to one end of the fastening frame 124a.

Next, FIG. 5 is a cross-sectional view taken along line A1-A1 of the negative electrode plate fixing member 120 for electrolytic polishing according to the embodiment shown in FIG. 4.

In an embodiment, the frame portion 122a of the frame unit 122 may include a first horizontal frame 122a1 and a second horizontal frame 122a2 joined to each other.

Additionally, the frame portion 122a of the frame unit 122 may include a cavity C between the first horizontal frame 122a1 and the second horizontal frame 122a2 joined to each other.

The first horizontal frames 122a1 may be arranged in plural numbers spaced apart from each other, and the second horizontal frames 122a2 may also be arranged in plural numbers spaced apart from each other.

A first curved frame 122r1 may be disposed between the first horizontal frames 122a1, and a second curved frame 122r2 may be disposed between the second horizontal frames 122a2.

The first horizontal frame 122a1 and the first curved frame 122r1 may be formed integrally, and the second horizontal frame 122a2 and the second curved frame 122r2 may also be formed integrally.

Through this, according to the embodiment, the first curved frame 122r1 is provided between the first horizontal frames 122a1, and the second curved frame 122r2 is provided between the second horizontal frames 122a2, thereby forming a frame unit. By increasing the section modulus of the frame portion 122a of (122), the strength or strength against torsion or bending can be significantly improved.

Therefore, according to the embodiment, a negative electrode plate holding member for electrolytic polishing with excellent strength and strength while reducing the weight of the holding member 120 used as a coupling means for a grid-type negative electrode plate used in electrolytic polishing and an electrolytic polishing device including the same are provided. There are technical effects that can be achieved.

In addition, in the embodiment, the frame portion 122a of the frame unit 122 includes a cavity C between the first horizontal frame 122a1 and the second horizontal frame 122a2 joined to each other, thereby reducing weight and increasing strength. There is a technical effect of providing an excellent cathode plate fixing member for electrolytic polishing.

Additionally, in an embodiment, the cavity C may be a closed space filled with air. Through this, fluid may not flow from the outside into the cavity C of the frame portion 122a of the frame unit 122.

Meanwhile, as shown in FIG. 2, numerous fixing members 120 are required as coupling means for the grid-shaped negative electrode plate, and the fixing member 120 for electrolytic polishing according to the embodiment is provided with a cavity C to reduce its own weight. This has a diminishing technical effect.

In particular, when the numerous electrolytic polishing fixing members 120 are immersed in the electrolyte solution of the electrolytic cell while fixing the negative electrode plates, the air sealed inside the cavity C of the frame unit 122 of the electrolytic polishing fixing members 120 There is a special technical effect in that the weight of the negative plate structure to which the fixing member 120 is coupled is reduced because an upward force is received within the electrolyte due to the density difference.

Therefore, the fixing member 120 for electrolytic polishing with a cavity (C) can provide a negative plate fixing member for electrolytic polishing with excellent strength while reducing the weight, and in particular, when immersed in an electrolyte solution, in addition to the effect of buoyancy, it can provide a fixing member for electrolytic polishing. A special technology that reduces the weight by receiving an upward upward force due to the density difference between the electrolyte and the air within the electrolyte by air sealed inside the cavity (C) of the frame unit 122 of the member 120. It works.

Next, Figure 6 is a perspective view of the negative electrode plate fixing member 120 for electrolytic polishing according to an embodiment, and Figure 7 is a high view of the fastening portion in area B1 of the negative electrode plate fixing member 120 for electrolytic polishing according to the embodiment shown in Figure 6. It is also an expansion of the government.

Referring to FIG. 6, in the embodiment, the fastening unit 124 includes a fastening frame 124a inserted into the frame coupling portion 122c, a fastening fixture 124b formed at one end of the fastening frame 124a, and , a fastening portion 124c formed on the other side of the fastening frame 124a, and a fastening locking portion 124d formed on one end of the fastening frame 124a.

Referring to FIG. 7, in the embodiment, the fastening fixing portion 124b of the fastening unit 124 can be firmly fixed without the grip slipping by making the pusher cup-shaped.

According to the embodiment, the cathode plate fixing member for electrolytic polishing is an electrolytic material that can increase fixing force and reduce weight by securing the fastening fixing part 124b of the fastening unit 124 occupied by the fixing part area in a wide cup shape to expand the support area. There is a technical effect of providing a negative electrode plate fixing member for polishing and an electrolytic polishing device including the same.

Additionally, in the embodiment, the fastening locking portion 124d formed at one end of the fastening frame 124a may include a locking portion body 124d1 and a locking portion extension 124d2.

The first diameter D1 of the engaging portion body 124d1 may be smaller than the second diameter D2 of the engaging portion extension portion 124d2. The engaging portion expansion portion 124d2 may be formed through a flaring process, but is not limited thereto.

According to the embodiment, the locking portion expansion portion 124d2 may be formed after coupling the fastening fixing portion 124b to one end of the fastening frame 124a.

Through this, according to the embodiment, the fastening fixing part 124b of the fastening unit 124, which functions as a fixing part, is secured in a wide cup shape to expand the support area, thereby increasing the fixing force and reducing the weight due to the cup shape. There is a complex technical effect of improving mechanical reliability by supporting the cup-shaped fastening part 124b through the locking part extension 124d2 and preventing its separation.

According to the embodiment, the technical effect of providing a cathode plate fixing member for electrolytic polishing with excellent strength while reducing the weight of the fixing member used as a coupling means for a grid-type negative electrode plate used in electrolytic polishing and an electrolytic polishing device including the same is achieved. there is.

In addition, according to an embodiment, a negative electrode plate fixing member for electrolytic polishing can secure a wide area occupied by the fixing part area to increase fixing force while reducing weight, and a technical method capable of providing an electrolytic polishing device including the same. It works.

In particular, according to the embodiment, by using a cathode plate fixing member for electrolytic polishing that is lightweight and has excellent strength and fixing power, when tilting the electrolytic polishing target material and the lattice-type cathode plate mounted thereto to block or remove air pockets, it is more effective than before. The weight is reduced, the bonding strength between the negative electrode plates of the grid-shaped negative electrode plate is improved, and the grid-shaped negative electrode plate can be more firmly coupled to the negative electrode holder.

Additionally, according to an embodiment, when tilting to one side and then tilting to the other side to change direction, the efficiency of the tilting process can be improved to eliminate air pockets due to the light weight.

In addition, according to the embodiment, the process and product reliability are greatly improved because short circuits do not occur due to contact between the grid-shaped negative electrode plate and the electrolytic polishing target material due to the stronger bond between the grid-shaped negative electrode plate itself and the electrolytic polishing target material and the grid-shaped negative electrode plate. There is a special technical effect that allows the electropolishing process to proceed.

The above detailed description should not be construed as restrictive in any respect and should be considered illustrative. The scope of the embodiments should be determined by reasonable interpretation of the appended claims, and all changes within the equivalent scope of the embodiments are included in the scope of the embodiments.

Claims (9)

It includes a frame unit and a fastening unit that are coupled to each other,
The frame unit is,
It includes a frame portion, a frame fixing portion extending to one side of the frame portion, and a frame coupling portion extending to the other side of the frame portion,
The fastening unit is,
It includes a fastening frame inserted into the frame coupling portion, and a fastening fixture formed on one end of the fastening frame,
The fastening unit includes a fastening locking portion that passes through the center of the fastening fixture and is disposed at an extreme end of one end of the fastening frame,
The fastening engaging portion is a negative plate fixing member for electrolytic polishing, including a circular hollow engaging portion body having a groove therein and a engaging portion extension portion extending radially laterally from a circular outer end of the circular hollow engaging portion body. . According to paragraph 1,
The frame portion of the frame unit includes a cavity between the first horizontal frame and the second horizontal frame bonded to each other. According to paragraph 1,
A negative electrode plate fixing member for electrolytic polishing, characterized in that the second diameter of the circular outline of the engaging portion extension, which is formed integrally with the circular hollow-shaped engaging portion body, is larger than the first diameter of the circular outer portion of the engaging portion body. . According to paragraph 3,
The frame portion of the frame unit,
A first curved frame disposed between the first horizontal frames and
A negative electrode plate fixing member for electrolytic polishing, characterized in that it includes a second curved frame disposed between the second horizontal frames. According to paragraph 1,
A negative electrode plate fixing member for electrolytic polishing, wherein the fastening fixing part has a cup shape at one end of the fastening frame. According to paragraph 2,
A negative electrode plate fixing member for electrolytic polishing, wherein the cavity between the first and second horizontal frames joined to each other is a closed space filled with air. According to paragraph 1,
The fastening unit is a negative electrode plate fixing member for electrolytic polishing, including a fastening part formed on the other side of the fastening frame. In clause 7,
The tightening part includes a tightening part body penetrating the other end of the fastening frame, and a tightening part locking part extending in the longitudinal direction at both ends of the tightening part body, and the width of the tightening part catching part is that of the tightening part body. A negative plate fixing member for electrolytic polishing, characterized in that it is larger than the width. A first cathode plate and a second cathode plate for electropolishing;
An electrolytic polishing device comprising the cathode plate fixing member for electrolytic polishing according to any one of claims 1 to 8, which couples the first cathode plate and the second cathode plate.