KR200357998Y1 - Jig for electroplating - Google Patents

Abstract

The present invention relates to a jig for electroplating, jig frame consisting of a main frame, a plurality of branch frames coupled in a transverse direction with respect to the main frame; It comprises a holder for fixing the workpiece on the branch frame, and holding and energizing the fixed workpiece, for supporting the plating of the workpiece, the holder is wrapped around the undesired portion to support the plating The groove part is formed, and in particular, the electroplating jig configured to perform electroplating by immersing the part in a plating bath in a state in which the part is wrapped and fixed to a holder in order to prevent the plating from being performed on the part which is not desired to be plated during the electroplating of the workpiece. will be.

Description

JIG FOR ELECTRO PLATE {JIG FOR ELECTROPLATING}

The present invention relates to an electroplating jig, and in particular, in order to prevent plating on a portion that is not desired to be plated during electroplating of an electroplating, the electroplating is configured to perform electroplating by wrapping the portion and immersing it in a plating bath while being fixed to a holder. It relates to a plating jig.

In general, electroplating is a coating of another metal in a thin layer on the surface of a metal by using the principle of electrolysis, and the coating of a metal product as a cathode in a solution (plating solution) containing ions of the metal to be plated. Electrodes are made of an electrode of a metal or an insoluble metal to be used as an anode, and the metal ions to be plated are reduced and plated on a metal product. The electroplating may include copper plating, nickel plating, chromium plating, industrial (hard) chromium plating, zinc plating, tin plating, gold plating, silver plating, and the like.

Electroplating is performed to prevent the surface corrosion of metal products or to decorate them. In many cases, pure metal is plated on the coating, but alloy plating or dispersing non-metallic materials in the metal to give high performance or special function to the plating layer. Multiple plating may be used for this purpose.

Electroplating can process many kinds of small quantity products, and it can be applied to various parts such as automobiles, acoustics, aircraft, telecommunications, computer parts, jewelry, building materials, etc., because it can give an appropriate metal film at a relatively low cost. have

The advantages of electroplating are to give tint and metal texture to a coating made of a material such as metal and plastic, and to obtain a film having good adhesion with metal properties.

In general electroplating, plating is performed in the order of acid treatment, washing with water, plating, washing with water, chromate (post-treatment), washing with water, dehydration and drying. Here, acid treatment is a process of removing rust or oil on the surface of the product before plating, and chromate is a process of coating a chromium film to increase the corrosion resistance of the plated product.

Electroplating jig according to the present invention, as shown in Figure 9a during electroplating using the conventional electroplating jig shown in Figures 8a and 8b is plated to a specific portion that does not want the plating of the workpiece To solve the problem of discarding, as shown in FIG. 9B, only portions except for the specific portions that do not want the plating may be plated.

As shown in FIG. 8A, the conventional electroplating jig 100 includes a plurality of branch frames 111 coupled to the main frame 110 and the main frame 110 in a transverse direction (orthogonal direction), and the branches. It comprises a fixing pin 102 formed at equal intervals in the frame 111, the surface of the main frame 110 and the branch frame 111 is coated with an insulating material is coupled to the fixing pin 102 Plating is performed only on the workpiece 103.

Referring to FIGS. 8A and 8B, an electroplating process by the electroplating jig 100 will be described. The fixing part 130 of the 103 is inserted and fixed, and the hook part 112 formed by bending one end of the main frame 110 is contacted with the cathode by hanging on the horizontal bar 40 of the plating bath 4. Electroplating is performed by energizing the plating jig 100 soaked in the plating solution 5 stored in the plating bath 4.

The electroplating jig 100 is plated with the fixing part 130 of the workpiece 103 fixed to the fixing pin 102 formed on the branch frame 111, in this case the fixing pin 102 Since most of the fixing part 130 of the workpiece 103 fixed by () is exposed to the plating solution 5, plating is performed on the entire workpiece 103. Therefore, since the fixing pin 102 of the electroplating jig 100 is not provided with a sealing means for preventing the plating solution 5 from penetrating into the portion that does not want to be plated, only the desired portion can be partially plated. There was no structural issue.

In addition, the fixing pin 102 is formed of a conductor of a conventional metal material, the plating is also made on the surface portion of the fixing pin 102 during the electroplating several times, as the electroplating is repeatedly performed Since the thickness of the plated layer of the fixing pin 102 is increased, there is a problem that the electrical conductivity with respect to the workpiece 103 is reduced. As a result, the plated fixing pin 102 is improved in mechanical properties such as hardness, strength, wear resistance, and corrosion resistance. Instead, there is a problem in that the elastic force is weakened when fixing the object 103 later. In addition, when the plating 103 is electroplated with respect to metal buttons, snaps, etc., the coating 103 plated using the conventional electroplating jig 100 is illustrated in FIG. 9A. As described above, the entire surface of the workpiece 103 is plated. Therefore, when the button is completed by riveting the metal button, snap, etc., the fixing part 130 of the workpiece 103 becomes brittle than before the plating, so it is easily broken during riveting, thereby increasing the defective rate. There was this.

The present invention is devised to solve the above problems, the object of the present invention is to fix the coating to the electroplating jig to prevent the plating is made to the part that does not want to plating when the plating is carried out to fix it The holder forms a holder, and the holder is energized with the electroplating jig so that the cathode contacts the workpiece fixed to the holder. In particular, the plating layer is not formed on the holder even after repeated electroplating or the elastic force of the holder is reduced. It is to provide an electroplating jig having a holder formed of a mixed material that does not weaken.

Figure 1a is an exploded perspective view of a part of the jig for electroplating according to the first embodiment of the present invention,

1B is a cross-sectional view taken along the line A-A of FIG. 1A;

Figure 2a is an exploded perspective view of a part of the jig for electroplating according to the second embodiment of the present invention,

2B is a cross-sectional view taken along the line B-B of FIG. 2A;

Figure 3a is an exploded perspective view of a part of the jig for electroplating according to the third embodiment of the present invention,

3B is a cross-sectional view taken along the line C-C of FIG. 3A;

Figure 4 is a sectional view of the main part of the jig for electroplating according to the fourth embodiment of the present invention,

5 is a sectional view of main parts of the jig for electroplating according to the fifth embodiment of the present invention;

Figure 6 is a sectional view of the main part of the jig for electroplating according to the sixth embodiment of the present invention,

7 is a state diagram for plating the workpiece using the electroplating jig according to the present invention,

8A is a perspective view of a conventional electroplating jig,

8B is a cross-sectional view taken along the line C-C of FIG. 7A;

Figure 9a is a state diagram of the coating plated using a conventional electroplating jig,

Figure 9b is a state diagram of the coating plated using the electroplating jig according to the present invention.

Explanation of symbols on the main parts of the drawings

1,1 ', 1 ": Jig frame 2,2': holder

3: coating 4: plating bath

5: plating solution 10: main frame

11,11 ', 11 ": Branch frame 12: Hanger

13,13 ': hole 14: engaging protrusion

20,20 ': Body portion 21,31: Groove

22: coupling groove 23: flat terminal

24: socket type terminal 25: protrusion type terminal

26: head 27: screw

30: fixed part 40: horizontal bar

An object of the present invention, such as a jig frame consisting of a main frame, a plurality of branch frames coupled in a transverse direction with respect to the main frame; The holder is fixed on the branch frame, and the holder for energizing the fixed object is made, and for the partial plating of the object, the holder is provided with a groove that wraps around and supports the undesired portion of the object It is achieved by a jig for electroplating characterized in that formed.

Preferably, the holder is achieved by an electroplating jig, which is formed of a material mixed with a flexible insulating material and a conductor powder.

More preferably, the flexible insulating material is one material selected from synthetic resins, rubber and silicon, the conductor powder is achieved by an electroplating jig, characterized in that one material selected from carbon black or metal powder. do.

In addition, the groove is achieved by an electroplating jig, characterized in that the terminal is electrically connected to the jig frame is formed.

In addition, the conductor powder of the material constituting the holder is achieved by an electroplating jig, characterized in that occupies a volume or mass of 30 to 50%.

In addition, the cross section of the groove portion of the holder is achieved by the electroplating jig, characterized in that the shape corresponding to the cross-sectional shape of the portion of the workpiece is not desired to be plated.

In addition, the workpiece is achieved by an electroplating jig, characterized in that any one of a button or a snap.

Hereinafter, with reference to the accompanying drawings an embodiment according to the present invention in more detail as follows.

1A is an exploded perspective view of part of an electroplating jig according to a first embodiment of the present invention, and FIG. 1B is a cross-sectional view taken along line A-A of FIG. 1A.

Electroplating jig according to a first embodiment of the present invention is a jig frame (1) consisting of a main frame 10 and a plurality of branch frames (11) coupled in a transverse direction with respect to the main frame 10, and It consists of a plurality of holders 2 formed on the branch frame 11 at equal intervals. Here, the jig frame 1 is made of a material such as copper, brass, steel (excellent electrical conductivity).

One end of the main frame 10 is formed with a hook portion 12 which is bent in order to be in electrical contact with the horizontal bar 40 of the plating bath 4 so that the cathode is in contact with the workpiece 3.

In the present invention, an example of the workpiece 3 is a button or a snap, and the like is in close contact with a coupling member (not shown) integrated with one side of the button or snap during the riveting operation after plating of the workpiece 3. The fixing part 30 to be coupled protrudes from the center of one side of the workpiece 3.

The branch frame 11 is coupled to the main frame 10 in a transverse direction, that is, at a right angle, or integrally formed with the main frame 10, and is formed on the plane of the branch frame 11. The holes 13 are formed at equal intervals so that the screw 27 penetrates.

The holder 2 is configured to fix a button or a snap, which is the workpiece 3 on the branch frame 11, and to energize the fixed workpiece 3 to one side of the holder 2. In the center is formed a groove portion 21 which surrounds and supports the fixing portion 30 of the workpiece 3, which is not desired to be plated, and the other side is coupled to insert the screw 27 in the center The groove 22 is formed. Here, since the fixing part 30 of the workpiece 3 is inserted into and closely contacted with the groove part 21 of the holder 2, as shown in FIG. 1B, the contact with the plating solution 5 is blocked during electroplating. It is possible to perform plating.

The holder 2 is a coupling groove 22 of the holder 2 through the hole 13 of the other side in a state in which the holder 2 is positioned on one side of the branch frame 11 as shown in FIG. 1B. Screw 27 is inserted into the holder 2 is coupled to the branch frame (11).

The surface of the electroplating jig constructed by the above method is coated with an insulating material so that plating is performed only on the workpiece 3 bonded to the holder 2.

Here, the body portion 20 of the holder 2 is made of synthetic resin, rubber, and silicone in order to perform a partial plating by electrically connecting the workpiece 3 while covering the portion of the workpiece 3 that is not desired to be plated securely. Injection molding is performed using a material in which a flexible insulating material and a conductor powder are mixed.

The conductor powder is made of any one or more of materials such as carbon and metal powder. Among the carbons, in particular, carbon black refers to black fine carbon powder, which is intended to prevent the fall of weather resistance of the polymer in addition to the use of ink, ink, and coloring, or to improve electrical conductivity. It is used for the purpose which used it, or as a carbon material. The metal powder includes copper, iron, silver, and the like having excellent electrical conductivity.

The mixing component ratio of the flexible insulating material and the conductor powder constituting the body portion 20 of the holder 2 can be variously adjusted according to the strength of the current required during electroplating and the flexibility of the holder 2. As an example of the present invention, the material of the holder 2 was formed by mixing each material such that the conductor powder occupies a volume or mass of 30 to 50%.

First, as a result of electroplating with the holder 2 formed by mixing the component ratio of the flexible insulating material and the conductor powder at 70:30, the temperature of the plating solution 5 is increased due to the heat of resistance of the holder 2. The plating treatment time was somewhat longer.

On the other hand, as a result of electroplating with the holder 2 formed by mixing the component ratio of the flexible insulating material and the conductor powder at 50:50, the resistance of the holder 2 is higher than the case where the component ratio is 70:30. The value was reduced to slow the temperature rise of the plating liquid 5, and the plating treatment time was shortened. Here, since the conductor powder, in particular, carbon black (carbon powder) and is high, the mixing ratio of carbon black is appropriately adjusted in consideration of the temperature control of the plating solution 5, the plating treatment time, and the economical efficiency. ) Is preferable.

Therefore, in the case where a great flexibility is required for the holder 2 or the manufacturing cost is to be lowered, the component ratio of the conductor powder is reduced and molded, and the plating speed (plating processing time) is improved or the resistance heat of the holder 2 is reduced. In order to make it into shape, it raises the component ratio of a conductor powder, and shape | molds.

Here, since the shape of the body portion 20 of the holder 2 is not maintained with respect to the high temperature plating solution 5 of the synthetic resin constituting the holder 2, the thermoplastic resin such as soft PCV is mixed with the holder 2. Not suitable as a material.

The state in which the button or snap, which is the workpiece 3, is inserted and fixed to the conductive holder 2 of the electroplating jig illustrated in FIG. 1A is illustrated in FIG. 1B, and the coupling groove 22 of the holder 2 is branched. The screw 27 inserted through the hole 13 of the frame 11 is engaged, and the fixing portion 30 of the workpiece 3 is inserted into and fixed to the groove portion 21 of the holder 2.

Figure 2a is an exploded perspective view of a part of the jig for electroplating according to the second embodiment of the present invention, Figure 2b is a cross-sectional view taken along the line B-B of Figure 2a.

Electroplating jig according to a second embodiment of the present invention is the main frame 10 and a plurality of branch frames (11 ') laterally coupled to the main frame 10, as in the first embodiment of the present invention It consists of a jig frame (1 ') and a plurality of holders 2' formed at equal intervals on the branch frame (11 ').

Here, the holder 2 'is integrally formed with the body 20 and the head 26 so that the holder 2' is inserted into and coupled to the hole 13 'formed on the branch frame 11'. In addition, the body portion 20 and the head portion 26 of the holder (2 '), like the holder 2 according to the first embodiment of the present invention is made of a flexible insulating material and conductor powder, such as synthetic resin, rubber and silicon Injection molded from a mixed material, the conductive powder of the material constituting the holder (2 ') occupies a volume or mass of 30 to 50%.

On the outer peripheral surface of the body portion 20 close to the head portion 26 and the head portion 26 so that the holder 2 'is firmly inserted into the hole 13' formed on the branch frame 11 '. It is also possible to apply and bond an adhesive. In addition, when the cross-sectional area of the body portion 20 of the holder 2 'is tapered to be smaller as it moves away from the head portion 26, the body portion 20 close to the head portion 26 of the holder 2'. It is also possible to form a groove on the outer circumferential surface and join.

The state in which the button or snap, which is the workpiece 3, is inserted and fixed to the conductive holder 2 'of the electroplating jig shown in FIG. 2A is shown in FIG. 2B, and the holder 2' is a branch frame 11 '. It is inserted into and coupled through the hole 13 ', and the fixing portion 30 of the workpiece 3 is inserted into and fixed to the groove portion 21 of the holder 2'.

3A is a perspective view of an electroplating jig according to a third embodiment of the present invention, and FIG. 3B is a cross-sectional view taken along line C-C of FIG. 3A.

The electroplating jig according to the third embodiment of the present invention has a plurality of branch frames 11 ″ coupled in a lateral direction with respect to the main frame 10 and the main frame 10 as in the first embodiment of the present invention. It consists of a jig frame (1 ") and a plurality of holders (2) formed at equal intervals on the branch frame (11"), the holder (2) on one side of the branch frame (11 ") Nipple-like coupling protrusions 14 are formed at equal intervals so as to fit. Here, in the center of one side of the holder (2) is formed a groove portion 21 which surrounds and supports the fixed portion 30 of the workpiece 3, that is, the plating 3 is not desired, the other side center The coupling groove 22 is formed so that the coupling protrusion 14 is inserted.

In addition, the body portion 20 of the holder 2 is injection-molded with a material mixed with a flexible insulating material such as a synthetic resin, rubber and silicon and the conductor powder like the holder 2 according to the first embodiment of the present invention Among the materials constituting the holder 2, the conductor powder occupies a volume or mass of 30 to 50%.

The coupling protrusion 14 may be formed of a material such as copper, brass, steel, or the like as the jig frame 1 ″, but may be formed of a stainless steel material having high corrosion resistance with respect to the plating solution 5. It is preferable to use.

As shown in FIG. 3B, the coupling protrusion 14 is integrally formed by being welded on one side of the branch frame 11 ″, but the coupling protrusion 14 is not limited thereto. It is also possible to fix it with screws (not shown) in the state in which it is placed.

As described above, the electroplating jig according to the third embodiment of the present invention is easily damaged when the holder 2 is damaged or deformed to perform its function as the electroplating is performed for a long time. In this case, the holder 2 is pulled out by hand or tongs (plier, pliers, cutting plier, etc.) to be separated from the coupling protrusion 14, and the new holder 2 The replacement operation of the holder 2 is completed only by a simple operation of inserting the coupling protrusion 14 into the holder. When the holder 2 is fitted to the coupling protrusion 14, the holder 2 has an inner circumferential surface of an inner circumferential surface of the coupling groove 22 of the holder 2 formed in an outer peripheral portion of an end of the coupling protrusion 14. It is in close contact with the projection of the shape and is firmly coupled.

4 is a cross-sectional view of main parts of an electroplating jig according to a fourth embodiment of the present invention, and the flat terminal 23 is embedded in the holder 2 having the same shape and structure as the first embodiment of the present invention. State is shown.

The body portion 20 ′ of the holder 2 is formed of a flexible insulating material such as synthetic resin, rubber, and silicone, and at the center of one side of the holder 2, that is, a portion of the holder 3 that is not desired to be plated, that is, a workpiece A groove 21 is formed to surround and support the fixing part 30 of (3), and a coupling groove 22 is formed at the center of the other side so that the screw 27 is inserted. Here, since the body portion 20 'of the holder 2 is not a conductive material as in the first to third embodiments of the present invention, a separate energization is made in order to contact the negative electrode with the workpiece 3. Means are needed. Accordingly, the bottom surface of the groove portion 21 of the holder 2 is embedded with a flat terminal 23 electrically connected to the jig frame 1, one end of the flat terminal 23 is the workpiece 3 It is bent to contact the end of the fixing portion 30 of, the other end is formed to be straight to contact the outer peripheral surface and the branch frame 11 of the screw (27). In this case, the flat terminal 23 is inclined to the side of the workpiece 3 so as to be in contact with each other even if the fixing portion 30 of the workpiece 3 is inserted less, it is preferably formed of an elastic conductive metal plate.

5 is a cross-sectional view of main parts of an electroplating jig according to a fifth embodiment of the present invention, and a socket-type terminal 24 is embedded in a holder 2 having the same shape and structure as the first embodiment of the present invention. State is shown.

The body portion 20 ′ of the holder 2 is formed of a flexible insulating material such as synthetic resin, rubber, and silicone, and at the center of one side of the holder 2, that is, a portion of the holder 3 that is not desired to be plated, that is, a workpiece A groove 21 is formed to surround and support the fixing part 30 of (3), and a coupling groove 22 is formed at the center of the other side so that the screw 27 is inserted. Here, since the body portion 20 'of the holder 2 is not the same conductive material as the first to third embodiments of the present invention, a separate energization means is required to contact the negative electrode to the object 3. . Accordingly, a socket-type terminal 24 electrically connected to the jig frame 1 is embedded in the inner circumferential surface of the groove portion 21 of the holder 2, and one end of the socket-type terminal 24 is the workpiece 3. Contact with the end or the outer circumferential surface of the fixing portion 30 of " And the other end is formed to be in contact with the outer circumferential surface of the screw 27 and the branch frame 11. Here, the socket-type terminal 24 is preferably formed of a conductive metal material.

6 is a cross-sectional view of main parts of an electroplating jig according to a sixth embodiment of the present invention, in which a protruding terminal 25 is embedded in a holder 2 having the same shape and structure as the first embodiment of the present invention. State is shown.

The body portion 20 ′ of the holder 2 is formed of a flexible insulating material such as synthetic resin, rubber, and silicone, and at the center of one side of the holder 2, that is, a portion of the holder 3 that is not desired to be plated, that is, a workpiece A groove 21 is formed to surround and support the fixing part 30 of (3), and a coupling groove 22 is formed at the center of the other side so that the screw 27 is inserted. Here, since the body portion 20 'of the holder 2 is not the same conductive material as the first to third embodiments of the present invention, a separate energization means is required to contact the negative electrode to the object 3. . Accordingly, a protrusion terminal 25 electrically connected to the jig frame 1 is embedded in the center of the bottom surface of the groove portion 21 of the holder 2, and one end of the protrusion terminal 25 is the workpiece 3. In contact with the groove part 31 formed in the fixing part 30 of the " And the other end is formed to be in contact with the outer circumferential surface of the screw 27 and the branch frame 11. Here, the protruding terminal 25 is preferably formed of a conductive metal material.

7 is a state diagram for plating the workpiece using the electroplating jig according to the present invention.

When the electroplating is performed using the electroplating jig according to the present invention, the cathode is grounded to the plating bath 4 in which the plating solution 5 is stored, and the holder for the electroplating jig according to the present invention 2 2 ') inserting and fixing the workpiece 3, i.e., the fixing portion 30 of the button or snap, and then immersing the electroplating jig in the plating bath 4 to energize the anode to expose the workpiece 3 A film of another metal is formed on the surface, which is generally formed to a thickness of 0.5 mu m.

When the plating is performed in this manner, the fixing part 30 of the workpiece 3 is plated as it is inserted into the groove part 21 of the holders 2 and 2 'and wrapped so as to be plated as shown in FIG. 9B. This remains in a non-plated state, and as a result, the fixing part 30 of the non-plated workpiece 3 has the same mechanical properties as before plating, so that it is not easily broken during post-processing such as riveting.

As described above, in the structure of the electroplating jig according to the present invention, the body parts 20 and 20 'of the holders 2 and 2' may be formed by using a conductive material or an insulating material and then embedded with a terminal. The grooves 21 of the holders 2 and 2 'may be variously formed in shapes corresponding to the cross-sectional shapes of portions where the plating of the workpiece 3 is not desired. The plating solution 5 may be selected from among plating solutions 5 containing ions such as copper, nickel, chromium, zinc, tin, gold, and silver, depending on the metal to be plated on the workpiece 3.

As described above, the electroplating jig according to the present invention is provided with a conductive holder to fix the workpiece on the branch frame of the electroplating jig and to electrically connect the fixed workpiece. On one side of the holder, a groove is formed, and the fixing part of the workpiece, which is a portion which is not desired to be plated, is firmly fixed in a wrapped state, thereby partially plating.

In addition, the body portion of the holder is formed by mixing and molding a flexible insulating material such as synthetic resin, rubber and silicone in a ratio of 70:30 to 50:50, the elastic force of the holder body portion required for fixing the workpiece is not weakened, The electrical conductivity between the electroplating jig and the workpiece can be maintained to maintain a constant plating rate to produce a stable product.

The holder is screwed to the branch frame of the electroplating jig screwed or inserted into the hole, or coupled to the coupling projection formed protruding into the branch frame, so that the holder is damaged or deformed by performing electroplating for a long time to perform its function. When it was not possible it could be easily replaced.

Accordingly, when the metal button, snap, etc. are plated with the coating object using the electroplating jig according to the present invention, and the riveting is completed, the fixing part of the coating material is inserted into the groove part of the holder. Since plating is performed, as a result, only the fixed part of the workpiece is not plated, so that it has the same mechanical properties as before the plating, thereby solving a problem in which the fixed part of the workpiece is broken during riveting as in the conventional case, which may occur during riveting. The failure rate could be reduced.

Claims (15)

A jig frame (1, 1 ', 1 ") consisting of a main frame (10) and a plurality of branch frames (11, 11', 11") coupled laterally with respect to the main frame (10); It comprises a holder (2, 2 ') for fixing the workpiece (3) on the branch frame (11, 11', 11 ") to support and energize the fixed workpiece (3), Electroplating jig, characterized in that the holder (2, 2 ') is formed in the holder (2, 2') for the partial plating of the workpiece (3) wrapped around the portion that does not want the plating of the workpiece (3). The method of claim 1, The holder (2, 2 ') is a jig for electroplating, characterized in that formed from a material that is mixed with a flexible insulating material and conductor powder. The method of claim 1, The flexible insulating material is an electroplating jig, characterized in that one material selected from synthetic resins, rubber and silicon. The method according to claim 2 or 3, The conductor powder is an electroplating jig, characterized in that the one material selected from carbon black and metal powder. The method according to any one of claims 1 to 3, Electroplating jig, characterized in that the groove portion 21 is formed with a terminal electrically connected to the jig frame (1). The method of claim 5, The terminal contacts the end of the fixing part 30 of the workpiece 3 so that the workpiece 3 is electrically connected to the jig frame 1, and the flat terminal 23 embedded in the bottom of the groove portion 21. J) for electroplating. The method of claim 5, The terminal is in contact with the outer surface of the fixing part 30 of the workpiece 3, the socket-type terminal embedded in the inner peripheral surface of the groove portion 21 so that the workpiece 3 is electrically connected to the jig frame 1 24) Jig for electroplating, characterized in that. The method of claim 5, The terminal is inserted into and contacted with the groove 31 formed in the fixed portion 30 of the workpiece 3 so that the workpiece 3 is electrically connected to the jig frame 1 at the center of the bottom surface of the groove 21. Electroplating jig, characterized in that the buried projection terminal (25). The method according to claim 2 or 3, Electroplating jig, characterized in that the conductive powder of the material constituting the holder (2, 2 ') occupies a volume of 30 to 50%. The method according to claim 2 or 3, Electroplating jig, characterized in that the conductor powder of the material constituting the holder (2, 2 ') occupies a mass of 30 to 50%. The method according to any one of claims 1 to 3, Electroplating jig, characterized in that the holder (2) is coupled by a screw 27 inserted through the other side in a state located on one side of the branch frame (11). The method according to any one of claims 1 to 3, Electroplating jig, characterized in that the holder (2 ') is inserted into and coupled to the hole (13') formed on the branch frame (11 '). The method according to any one of claims 1 to 3, The holder (2) jig for electroplating, characterized in that the coupling is fitted to the engaging projection 14 protruding on one side of the branch frame (11 "). The method according to any one of claims 1 to 3, The cross section of the groove portion 21 of the holder (2, 2 ') is an electroplating jig, characterized in that the shape corresponding to the cross-sectional shape of the portion of the workpiece (3) does not want to be plated. The method according to any one of claims 1 to 3, The workpiece 3 is an electroplating jig, characterized in that any one of a button or a snap.