JPH0892792A - Lead wire for electroplating - Google Patents

Abstract

PURPOSE: To provide a lead wire part which is usable for a long period with mere exchange of parts even if plating metal deposits on an electrode by screwing a collar to an electrode juncture and screwing a lead wire juncture thereto across an O-ring. CONSTITUTION: The hollow cylindrical collar 3 made of an electrically insulating synthetic resin is screwed to the electrode juncture 4 between the electrode 2 and the lead wire 6. The electrode juncture 4 is screwed via the O-ring 5 to the screw of the lead wire juncture 7. Both junctures 4, 7 are hermetically connected by the effect of the O-ring 5. The plating metal deposits only on the electrode 2 and the collar 3 as shown by a virtual line 10 when small-sized works are electroplated by using the lead wire 1 for electroplating. The electrode 2 and the collar 3 are removed at the screwing part and are exchanged together with the O-ring 5. The lead wire 6 is reusable.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lead wire used when a small object to be processed is placed in a barrel or the like and electroplated.

[0002]

2. Description of the Related Art When electroplating a large number of small objects to be processed at one time, these objects are placed in a barrel, the barrel is immersed in an electrolytic plating solution, and the anode is placed in the plating solution and the cathode is placed in the plating solution. Energize while in contact with the object to be processed. The barrel is a regular polygonal column, for example, a regular hexagonal column, and the side plate is a porous plate, and the plating solution enters the inside through this hole. By rotating the barrel, the object to be treated is agitated and constantly comes into contact with a new plating solution. Ideally, the cathode is completely covered by the object to be treated, but in reality, only a part of it contacts the object to be treated. For this reason, since the object to be processed is generally stirred on the surface of the cathode that does not come into contact with the object to be processed, the plating metal is deposited on the entire surface of the electrode.

FIG. 2 shows a lead wire 11 for electrolytic plating which has been widely used in the past. The lead wire 16 and the electrode 12 are joined by soldering, screw joining or the like, and the lead wire 16 is covered with an insulating coating 18. When electroplating is performed using this electroplating lead wire 11, a plating metal is deposited on the electrode 12 as indicated by a virtual line. The plating metal is deposited not only on the electrode 12 but also on the insulating coating 17. If the amount of the plated metal deposited on the electrode 12 exceeds a certain level, the contact between the object to be processed and the electrode deteriorates.
Although the electrodes must be replaced, only the electrodes cannot be easily removed, so the entire electroplating lead wire 11 must be replaced.

[0004]

SUMMARY OF THE INVENTION An object of the present invention is to provide a lead wire for electroplating in which only the electrode portion can be easily replaced when the plating metal is deposited on the electrode.

[0005]

SUMMARY OF THE INVENTION According to the present invention, an electrode having an electrode connecting portion with an external thread in the axial direction, an electrically insulating synthetic resin collar with an internal thread, and a lead wire with an internal thread are provided. A lead wire having a connecting portion and covered with an electrically insulating synthetic resin; and an O-ring; a collar is screwed onto the electrode connecting portion; and the O-ring is inserted to screw the lead wire connecting portion. Is a lead wire for electroplating.

[0006]

According to the present invention, the electrode and the lead wire are screwed together, the lead wire and the electrode have a collar made of an electrically insulating synthetic resin, and the collar and the lead wire further have a collar. The O-ring is inserted. Therefore, the electroplating solution does not enter the connection between the lead wire and the electrode.
When the plating metal is deposited on the electrode, it is deposited only on the electrode and the collar, not on the lead wire coating.

[0007]

The present invention will be described in more detail below with reference to examples.

FIG. 1 is a sectional view of a lead wire 1 for electroplating according to an embodiment of the present invention. Between the electrode 2 and the lead wire 6, a hollow cylindrical collar 3 made of electrically insulating synthetic resin such as PVC is provided. The electrode 2 is provided with an electrode connecting portion 4 extending in the axial direction and is provided with an external screw. Further, the collar 3 is provided with an internal thread, and is screwed with an external thread of the connecting portion 4. The electrode connecting portion 4 further extends to the tip of the collar 3 and is screwed with an internal screw provided on the lead wire connecting portion 7 via an O-ring 5 there. By sufficiently tightening the electrode connecting portion 4 into the lead wire connecting portion 7,
Due to the action of the O-ring 5, both the connecting portions 4 and 7 are screwed airtightly. When a small object is electroplated using this electroplating lead wire 1, the plating metal is deposited only on the electrode 2 and the collar 3 as shown by a virtual line 10. In this state, the electrode 2 and the collar 3 are unscrewed and replaced with a new electrode 2 and the collar 3. Since the O-ring 5 is also often deformed or altered, it is replaced.

When the electrode 2 having a diameter of 10 mm and a length of 25 mm and having a size substantially the same as that used conventionally is used, the appropriate length of the collar 3 varies depending on the type of plating metal, but is most plated. In the case of nickel where metal is likely to be deposited, it is about 20 mm. When the plating metal is nickel, it is necessary to replace the electrode, that is, the entire electroplating lead wire 11 within several hours if the conventional electroplating lead wire 11 is used. However, if the electroplating lead wire 1 of the present invention is used, Electrode 2 and collar 3 and O-ring 5 several times a day
You can use it for a long time without replacing the lead wire by simply replacing.

[0010]

As described above, according to the present invention, since the collar and the O-ring are provided between the electrode and the lead wire, the plated metal is deposited only on the electrode and on the collar. Therefore, it can be used for a long period of time without replacing the lead wire portion only by exchanging the electrode, the collar and the O-ring.

[Brief description of drawings]

FIG. 1 is a sectional view of a lead wire 1 for electroplating according to an embodiment of the present invention.

FIG. 2 Conventionally used lead wire 11 for electroplating
FIG.

[Explanation of symbols]

 1 Electroplating lead wire 2 Electrode 3 Color 4 Electrode connection part 5 O-ring 6 Lead wire 7 Lead wire connection part 8 Covering of lead wire

Claims (1)

[Claims] 1. An electrode having an electrode connecting part with an external thread in the axial direction, an electrically insulating synthetic resin collar with an internal thread, and a lead wire connecting part with an internal thread, and electrically insulating. A lead for electroplating, comprising a lead wire coated with a synthetic resin and an O-ring. The collar is screwed onto the electrode connecting portion, and the O-ring is inserted to screw the lead wire connecting portion. line.