KR102317783B1 - Anodizing zig - Google Patents

Abstract

The present invention may provide an anodizing jig, comprising: an external fixing assembly to which an object to be processed is connected and an anode is connected to apply the anode to a connected object to be processed, and is fixed to an external fixture; a cathode tube having a space in which an air is injected and having an air injection tube connected to one side thereof, and at least one discharge hole positioned inside an electrolytic cell during anodizing treatment to discharge the air injected through an air injection pipe into the electrolytic cell; and a bus bar having one side insulated by an insulating member and fixed to the external fixing assembly, the other side connected to the cathode tube, and one side end connected to a cathode line to apply a cathode to the cathode tube. The provided anodizing jig can maximize anodizing processing efficiency.

Description

Anodizing jig

The present invention relates to an anodizing jig.

Aluminum (Al) material has high dimensional accuracy and can be mass-produced in a shorter time than iron in the production of lightweight castings. In addition, due to characteristics such as high castability, low density, high productivity, low shrinkage and relatively high strength, it is widely used in various industrial fields.

The fields of use of aluminum vary from the field of transport equipment such as aircraft, railways and automobiles to electricity, electronics, and general machinery. Specifically, it is widely used in cases such as transmission housings, engine cylinders and blocks, fuel measuring devices, and transportation equipment parts with complex shapes. In addition, with the development of the IT industry, aluminum is widely used in cases of portable electronic devices such as portable computers, tablet PCs, and smart phones.

In spite of these advantages and various applicability, aluminum may corrode even in a less severe environment, resulting in deterioration of mechanical properties, so a method to increase corrosion resistance and ensure reliability is required.

Methods for improving the disadvantages of aluminum include a method of adding elements such as Mn, Mg, Si and Cr to aluminum and using it as an alloy, an anodizing method that creates an artificial anodization film on the surface of an aluminum alloy, and electricity There are a chromate coating method that creates a chemical conversion film that can be energized, a phosphate film treatment method, and the like.

Among them, the anodizing method can be considered as a method with high functionality in forming a protective film of an aluminum alloy material.

Anodizing includes an oxalic acid method, sulfuric acid method, and chromic acid method depending on the type of electrolyte used during electrolysis. Using the aluminum material to be surface treated as the anode and applying DC power, the surface of aluminum is oxidized by oxygen generated from the anode to form an aluminum oxide (Al2O3) film, which is very hard and has corrosion resistance. It is formed into a porous tissue that is large and has a very small diameter. The higher the purity of aluminum, the more beautiful and glossy film can be obtained.

In this anodizing, a jig is used to support the object to be treated so as not to sink to the bottom of the electrolytic cell while immersing the object to be treated for surface treatment in the electrolytic cell in which the electrolyte is accommodated, and the jig is the shape of the object to be treated Jigs of various structures manufactured in response to this are being used.

On the other hand, since the temperature of the anodizing device rapidly rises during the anodizing treatment, a device for maintaining the temperature inside the electrolytic cell at a constant level is essential.

The present invention provides an anodizing jig that can easily control the temperature of the internal solution of the electrolyzer and maximize the anodizing efficiency by forming a uniform film by minimizing the thickness deviation of the film on all areas during anodizing treatment. .

The anodizing jig according to an aspect of the present invention includes an external fixing assembly fixed to an external fixing body and a space in which the air is injected, the object to be treated is connected and the anode is connected to apply the anode to the connected object to be treated. A cathode tube provided with an air injection tube connected to one side and having at least one discharge hole disposed inside the electrolytic cell during anodizing treatment to discharge the air injected through the air injection tube into the electrolytic cell, and one side of the insulating member and a bus bar fixed to the external fixing assembly after being insulated by the external fixing assembly, the other end connected to the cathode tube, and one end connected to the cathode line to apply a cathode to the cathode tube.

According to an embodiment of the present invention, the external fixing assembly has an insertion space into which the bus bar can be inserted in the center, and is formed on both sides of at least one fixing hole for connecting the object to be processed to the external fixing assembly. a main frame having a main frame, one side connected to the fixing hole, and a connecting member connected to the other side to be processed, and is formed on the main frame adjacent to the insertion space and fixed by hooking the main frame to an external fixing body and a locking member to which the bus bar insulated by the insulating member is coupled, and any one of the connecting members may be connected to the anode line when connected to the fixing hole.

According to an embodiment of the present invention, the external fixing assembly is formed on both sides of the first and second main frames having at least one fixing hole for connecting the object to be processed, and in an area adjacent to the fixing hole. first and second fixing members installed and each of the main frames having a predetermined interval and connecting them to each other and fixing them; an insertion space formed by the first and second main frames and the first and second fixing members; The first and second locking members installed on the first and second fixing members to hook and fix the first and second main frames to an external fixture, and the first and second locking members are connected and a support frame to which a bus bar insulated by the insulating member inserted through the insertion space is coupled.

According to an embodiment of the present invention, the cathode tube may have a cylindrical shape, and may have at least two or more discharge holes on the bottom surface or the side surface.

According to an embodiment of the present invention, the connecting member may be made of a titanium material.

According to the anodizing jig according to an aspect of the present invention, an air injection tube is installed in the cathode tube corresponding to the negative electrode assembly located inside the electrolytic cell, and air is injected into the cathode tube through the air injection tube during anodizing and discharged to the electrolyzer, The advantage is that the internal solution temperature can be controlled.

In addition, according to the anodizing jig according to an aspect of the present invention, by connecting the object to be treated using titanium, it is possible to prevent the connection member from being corroded by the solution in the electrolytic cell, thereby improving the connectivity between the anodizing jig and the object can do it

1 is a side view for explaining a negative electrode assembly of an anodizing jig according to an embodiment of the present invention.
2 is a front view of the anode assembly of the anodizing jig according to an embodiment of the present invention.
3 is a front view of the external fixing assembly of the anodizing jig according to an embodiment of the present invention.
4 is a plan view of the external fixing assembly of the anodizing jig according to an embodiment of the present invention.
5 is a side view of the external fixing assembly of the anodizing jig according to an embodiment of the present invention.
6 is an overall assembly view of an anodizing jig according to an embodiment of the present invention.
7 is a front view of the external fixing assembly of the anodizing jig according to another embodiment of the present invention.
8 is a plan view of the external fixing assembly of the anodizing jig according to another embodiment of the present invention.
9 is a side view of the external fixing assembly of the anodizing jig according to another embodiment of the present invention.
10 is an overall assembly view of an anodizing jig according to another embodiment of the present invention.
11 is an exemplary diagram in which an anodizing jig according to an embodiment of the present invention is actually applied.
12 is an exemplary diagram to which an anodizing jig according to another embodiment of the present invention is actually applied.

Advantages and features of the present invention and methods of achieving them will become apparent with reference to the embodiments described below in detail in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but will be implemented in a variety of different forms, and only these embodiments allow the disclosure of the present invention to be complete, and common knowledge in the technical field to which the present invention belongs It is provided to fully inform the possessor of the scope of the invention, and the present invention is defined by the description of the claims.

On the other hand, the terms used herein are for the purpose of describing the embodiments and are not intended to limit the present invention. Also, an embodiment may include applications. In addition, in this specification, the singular also includes the plural unless otherwise specified in the phrase. As used herein, "comprises" and/or "comprising" refers to the presence of one or more other components, steps, operations and/or elements in a referenced element, step, operation and/or element. or addition is not excluded. Hereinafter, embodiments or applications of the present invention will be described in detail with reference to the accompanying drawings.

1 is a side view for explaining the negative electrode assembly of the anodizing jig according to an embodiment of the present invention, Figure 2 is a front view of the negative electrode assembly of the anodizing jig according to the embodiment of the present invention.

1 and 2, the anode assembly of the anodizing jig according to the embodiment of the present invention is immersed in an electrolyzer for anodizing treatment, and the cathode tube 120 and the cathode tube 120 are operated as a cathode portion during anodizing treatment. It may be configured as a bus bar 140 connected to the cathode of the power source to apply the cathode power to the cathode tube 120 .

The cathode tube 120 according to the embodiment of the present invention is provided with a space 121 into which air is injected, and an air injection tube 130 is connected to one side of the electrolyzer to supply the air injected through the air injection tube 130 . At least one or more discharge holes 122 for discharging to the inside may be formed.

In the embodiment of the present invention, the cathode tube 120 has a cylindrical shape, and a plurality of discharge holes 122 may be formed on the bottom and/or side surfaces of the cylindrical cathode tube 120 . The air discharged through the discharge hole 122 can lower the temperature of the solution inside the electrolyzer, as well as make the distribution of the solution even.

Meanwhile, a portion of the cathode tube 120 may be connected to one side of the bus bar 140 . Specifically, a portion of the cathode tube 120 may be connected to one side of the bus bar 140 through an insulating member (not shown), for example, an insulating tape.

After the bus bar 140 is insulated by an insulating member, it is connected to the external fixing assembly by an insulating member, and one end is connected to the cathode tube 120 and the other end is connected to a cathode power source to apply a cathode to the cathode tube 120 . can do.

In addition, the bus bar 140 may have a “L”-shaped structure in which the front surface protrudes.

In an embodiment of the present invention, the insulating portion of the bus bar 140 by the insulating member may be a portion other than the other portion, which is a portion to which the negative power source is connected.

According to the embodiment of the present invention as described above, although the cathode tube 120 and the bus bar 140 have been described as being separately formed and connected as an example, they may also be formed integrally.

An external fixing assembly to which the negative electrode assembly is connected according to an embodiment of the present invention will be described with reference to FIGS. 3 to 10 .

Figure 3 is a front view of the external fixing assembly of the anodizing jig according to an embodiment of the present invention, Figure 4 is a plan view of the external fixing assembly of the anodizing jig according to an embodiment of the present invention, Figure 5 is an embodiment of the present invention A side view of the external fixing assembly of an anodizing jig according to an example, FIG. 6 is an overall assembly view of the anodizing jig according to an embodiment of the present invention, and FIG. 7 is an external fixing assembly of an anodizing jig according to another embodiment of the present invention 8 is a plan view of the external fixing assembly of the anodizing jig according to another embodiment of the present invention, Figure 9 is a side view of the external fixing assembly of the anodizing jig according to another embodiment of the present invention, Figure 10 is the present invention of an overall assembly diagram of an anodizing jig according to another embodiment.

The external fixing assembly of the anodizing jig according to the embodiments of the present invention is coupled to the negative electrode assembly shown in FIGS. 1 to 2 and fixed to the external fixing body (not shown) as well as the object to be processed ( FIGS. 11 and 12 ). 300) may be connected, and the anode may be applied to the object 300 corresponding to the object to be plated by being connected to an anode power source.

To this end, as shown in FIGS. 3 to 6 , the external fixing assembly according to an embodiment of the present invention may include a main frame 100 , a connecting member 110 , and a locking member 150 .

The main frame 100 may include an insertion space 101 in the center, and at least one fixing hole 102 formed on both sides and connected to the anode.

The insertion space 101 may have a size and shape sufficient to allow the bus bar 140 of the negative electrode assembly to be inserted into the main frame 100 while being spaced apart from each other.

The fixing hole 102 has a shape to which the connecting member 110 can be connected, and can be fastened to the connecting member 110 through a nut 103 .

Meanwhile, between the fixing hole 102 and the nut 103, a positive line connected to the positive power source may be inserted. That is, after the positive line is inserted into one end of the connecting member 110 , it may be fixed to the main frame 100 through the nut 103 .

The connection member 110 has a screw shape at both ends having a structure in which both ends can be fastened, and one end is inserted into the fixing hole 102 and can be fastened to the fixing hole 102 through the nut 103, The other end may be fastened to the object 300 to be processed.

The connection member 110 according to the embodiment of the present invention is made of a material for transmitting the anode to the object 300 and minimizing wear by the solution inside the electrolytic cell, and may be, for example, a titanium material.

Through the connection structure as described above, the connection member 110 may receive an anode through the anode wire connected to the fixing hole 102 to transmit the anode to the object 300 .

The locking member 160 may be formed on the upper surface of the rear side of the insertion space 101 formed in the main frame 100 to hang and fix the external fixing assembly of the anodizing jig to an external fixing body (not shown). To this end, a curved locking jaw 10 may be provided at the end of the locking member 160 .

One side portion of the locking member 160 may be coupled to the bus bar 140 insulated by the insulating member through taping using the insulating tape.

Through the structure as described above, the negative electrode assembly may be fixed to the external fixing assembly. Specifically, the cathode tube 120 is connected to the bus bar 140 inserted into the insertion space 101 , and the bus bar 140 is connected to the locking member 160 , so that the cathode tube 120 and the bus bar 140 . may be aligned by the locking member 160 and fixed on the main frame 100 .

In addition, as described above, by connecting the negative electrode assembly and the external fixing assembly through taping using an insulating tape as an insulating member, the negative electrode applied to the bus bar 140 is transmitted only to the negative electrode tube 120 and to the main frame 100 . The applied anode may be transferred only to the object 300 to be treated.

On the other hand, in the external fixing assembly according to another embodiment of the present invention, as shown in FIGS. 7 to 10 , fixing holes 102 are formed on both sides, and the connection member 110 through the fixing holes 102 . ) connected to the first and second main frames 200 and 210 and the fixing holes 102 are formed in adjacent areas to separate the first and second main frames 200 and 210 by a predetermined distance. The first and second fixing members 220 and 222 are connected to each other, and the first and second fixing members 220 and 222 are connected to the external fixing body (not shown) to hang the external fixing assembly of the anodizing jig. It may further include first and second locking members 230 and 232 for fixing them.

The bus bar 140 may be inserted into the space formed by the first and second fixing members 220 and 222 and the first and second main frames 200 and 210 , that is, the insertion space 101 .

In addition, the external fixing assembly according to another embodiment of the present invention may further include a support frame 240 that connects the central portions of the first and second fixing members 220 and 222 and to which the bus bar 140 is coupled. can In this case, the insulated bus bar 140 may be connected to the central portion of the support frame 240 through a taping process using an insulating tape as an insulating member.

On the other hand, end portions of the first and second locking members 230 and 232 may be provided with a locking jaw 10 so as to be caught by an external fixture.

An example in which the anodizing jig having the above-described structure is actually applied will be described with reference to FIGS. 11 and 12 .

11 is an exemplary diagram in which an anodizing jig according to an embodiment of the present invention is actually applied, and FIG. 12 is an exemplary diagram in which an anodizing jig according to another embodiment of the present invention is actually applied.

The target object 300 illustrated in FIGS. 11 and 12 has a space for accommodating the cathode tube 120 and may be made of an aluminum material.

In addition, a fastening member 310 for connection with the connecting member 110 may be installed inside the to-be-processed object 300 .

First, as shown in FIG. 11 , the cathode tube 120 and the bus bar 140 are connected using an insulating tape, which is an insulating member, and inserted into the insertion space 101, followed by taping using an insulating tape as an insulating member. It is fixed to the locking member 160 through the process. At this time, the bus bar 140 and the engaging member 160 may be coupled in an insulated state. That is, the portion of the engaging member 160 coupled to the bus bar 140 may be insulated through an insulating tape that is an insulating member and then coupled to the bus bar 140 .

Then, by combining the fastening member 310 and the connecting member 110 formed on the upper inner surface of the object 300, the object 300 and the anodizing jig can be combined. In this case, the coupling between the connecting member 110 and the fastening member 310 may be made by fastening a screw line formed on one side of the connecting member 110 and a screw hole of the fastening member 310 .

Accordingly, the cathode tube 120 is positioned inside the object 300 to be processed.

Thereafter, the cathode of the cathode tube 120 is applied through the bus bar 140 to which the cathode ray is connected, and the anode is connected to the external fixing assembly of the anodizing jig through the anode line coupled to the other side of the connecting member 110 to be processed. An anode may be applied to the water 300 .

Then, by using the locking jaws 10 formed at the ends of the locking members 160 to be fixed to an external fixture installed at a position spaced apart from the electrolytic cell by a predetermined distance, the cathode tube 120 and the object 300 are attached to the electrolytic cell. It may be in a state of being contained. That is, the cathode is positioned inside the electrolyzer by the cathode tube 120 located inside the electrolyzer, and the anode is connected to the object 300 through the main frame 100 of the external fixing assembly, so that the anodizing process can be performed. .

As shown in FIG. 12 , the cathode tube 120 and the bus bar 140 are connected using an insulating tape as an insulating member 150 and inserted into the insertion space 101 using an insulating tape as an insulating member. It is fixed to the support frame 240 of the external fixing assembly according to another embodiment through a taping process. In this case, the bus bar 140 and the support frame 240 may be coupled in an insulated state by an insulating tape as an insulating member. That is, the portion of the support frame 240 coupled to the bus bar 140 may be insulated through an insulating tape and then coupled to the bus bar 140 .

Then, by coupling the fastening member 310 and the connecting member 110 formed on the upper inner surface of the object 300, the object 300 and the external fixing assembly can be combined. In this case, the coupling between the connecting member 110 and the fastening member 310 may be made by fastening a screw line formed on one side of the connecting member 110 and a screw hole of the fastening member 310 .

Accordingly, the cathode tube 120 is positioned inside the object 300 to be processed.

Thereafter, the cathode of the cathode tube 120 is applied through the bus bar 140 to which the cathode ray is connected, and the anode is connected to the first and second mainframes 200 and 210 through the anode line coupled to the other side of the connecting member 110 . ) and the positive electrode may be applied to the object 300 to be processed.

Then, the first and second locking members 230 and 232 are fixed to an external fixture installed at a location spaced apart from the electrolytic cell by a predetermined distance using the locking jaws 10 formed at the ends of the cathode tube 120 and to-be-processed. The water 300 may be in a state immersed in the electrolyzer. That is, the cathode tube 120 is positioned inside the electrolyzer, and the anode is connected to the external fixing assembly, so that an anodizing process may be performed.

Through the process as described above, air is supplied to the inner space 121 of the cathode tube 120 through the air injection tube 130 during the anodizing treatment, and the air supplied to the inner space 121 of the cathode tube 120 is discharged through the exhaust hole. By being discharged into the electrolyzer through (122), it is possible to control the temperature of the solution in the electrolyzer as well as to make the concentration of the solution uniform.

The above description is merely illustrative of the technical idea of the present invention, and various modifications and variations are possible without departing from the essential characteristics of the present invention by those skilled in the art to which the present invention pertains. Accordingly, the embodiments expressed in the present invention are not intended to limit the technical spirit of the present invention, but to illustrate, and the scope of the present invention is not limited by these embodiments. The protection scope of the present invention should be construed by the following claims, and all technical ideas that are equivalent to or within the equivalent range should be construed as being included in the scope of the present invention.

100 : main frame
101: insert space
102: insertion hole
110: connecting member
120: cathode tube
130: air inlet pipe
140: bus bar
160: locking member
200, 210: 1st, 2nd main frame
220, 222: first and second fixing members
230, 232: first and second locking members
240: support frame
300: object to be processed
310: fastening member

Claims (5)

An external fixing assembly to which the object to be treated is connected and the anode is connected to apply an anode to the connected object, and is fixed to an external fixture;
A space into which air is injected is provided, and an air injection tube is connected to one side, and at least one discharge hole is formed that is located inside the electrolytic cell during anodizing and discharges the air injected through the air injection tube into the electrolyzer. cathode tube,
An anodizing jig comprising a bus bar having one end insulated by an insulating member and fixed to the external fixing assembly, the other end connected to the cathode tube, and one end connected to the cathode line to apply a cathode to the cathode tube.
According to claim 1,
The external fixing assembly,
a main frame having an insertion space in the center into which the bus bar can be inserted, and having at least one fixing hole formed on both sides to connect an object to be processed to the external fixing assembly;
A connecting member having one side connected to the fixing hole and the other side connected to the object to be processed;
It is formed on the upper part of the main frame adjacent to the insertion space and has a locking jaw capable of hooking and fixing the main frame to an external fixture, and includes a locking member to which the bus bar insulated by the insulating member is coupled,
Any one of the connection members is an anodizing jig connected to the anode line when connected to the fixing hole.
According to claim 1,
The external fixing assembly,
First and second main frames formed on both sides and having at least one fixing hole for connecting the object to be processed;
first and second fixing members installed in an area adjacent to the fixing hole to connect the main frames to each other with a predetermined interval and to fix them;
an insertion space formed by the first and second main frames and the first and second fixing members;
first and second locking members installed on the first and second fixing members to hook and fix the first and second main frames to an external fixture;
Anodizing jig including a support frame connecting between the first and second locking members, and to which a bus bar insulated by the insulating member inserted through the insertion space is coupled.

4. The method of claim 2 or 3,
The cathode tube is
Anodizing jig having a cylindrical shape and having at least two or more discharge holes on the bottom or side.
3. The method of claim 2,
The connecting member is
Anodizing jig made of titanium material.

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