JPH0790694A - Revolving jig for surface treatment - Google Patents

Abstract

PURPOSE:To prevent the adhesion of a surface treating liquid and improve the life of the revolving jig for surface treatment by forming coating layers having an insulating characteristic on all parts of the revolving jig and wiring for power feeding to be exposed in the treating liquid. CONSTITUTION:This revolving jig is constructed to have a supporting part 15 which supports a member 14 to be treated, a revolving shaft 13 which is electrically connected to this supporting part 15 and revolves the member 14 to be treated and the wiring 19 for power feeding which is electrically connected at one end to the revolving shaft so as to be revolved cooperatively with the revolving shaft 13 and exists at the other end outside the surface treating liquid 12. The coating layers having the insulating characteristics are formed on all the parts of the supporting part 15, the revolving shaft 13 and the wiring 19 for power feeding to be exposed in the surface treating liquid 12. As a result, the adhesion of the surface treating liquid to the conductive parts of the revolving jig is prevented and the life of the revolving jig is prolonged.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotary jig for surface treatment, and is particularly used for surface treatment of a member to be treated having a complicated shape.

[0002]

2. Description of the Related Art When a surface of a work having a complicated shape (for example, a work having a hole having a complicated shape) is surface-treated by a general apparatus, air is accumulated inside the hole, resulting in incomplete surface treatment. There was a fear that there was a part. Since it is difficult to surely surface-treat a work having such a complicated shape, a rotating jig 70 as shown in FIG. 4 is conventionally known to solve this problem. FIG. 3 is a configuration diagram of the rotary jig 70 for plating.

A rotating jig 70 shown in FIG. 3 is arranged in a plating treatment liquid and is used for performing a plating treatment while rotating a work 71. The rotating jig 70 is fixed around the rotating shaft 72, a rotating shaft 72 for rotating the work 71, a power feeding portion 73 for conducting the rotating shaft 72, a supporting portion 74 for supporting the work 71, and a rotating shaft 72. And a holding plate 75 for rotating the support part 74 together with the rotating shaft 72, and a conductive plate 76 electrically connected to the rotating shaft 72 and electrically connected to another rotating shaft (not shown). There is.
Further, the power feeding portion 73 includes an iron plate 73a for giving a negative electric charge from the outside, and a carbon plate 73b fixed to the side plate 73. Since the rotating jig 70 is configured as described above, when a negative charge is supplied to the power feeding unit 73 from the outside, the charge is applied to the rotating shaft 72, the holding unit 75, and the supporting unit 74.
It is transmitted to the work 71 via and the work 71 becomes a cathode. Therefore, by applying a voltage between the work 71 and an anode (not shown) arranged in the plating solution, the work 7
1 is to be plated.

By the way, in the pre-process of the plating process, the work 7
The entire rotating jig 70 to which the work 71 is attached is immersed in a strong acid or strong alkaline liquid for the purpose of cleaning 1. However, at this stage, the rotating shaft 72, the power feeding portion 73, the supporting portion 74, and the holding portion 75.
Also, since the conductive plate 76 is exposed to the liquid, there is a risk of corrosion and deterioration if the above steps are repeated.
In addition, even during the plating process, if the plating solution adheres to most parts of the rotary jig 70 and the plating process is repeated, there is a risk that most parts of the rotary jig 70 deteriorate. Therefore, in the above-mentioned conventional technique, an attempt is made to solve the above problem by forming an insulating resin coat 77 on the exposed portion.

[0005]

However, in the above-described rotating jig 70, it is necessary to electrically connect the rotating shaft 72 to the power feeding portion 73, so that the rotating shaft 72 and the power feeding portion 73 are connected to each other. The insulating resin coat 77 described above cannot be formed between them. As a result, a strong acid or a strong alkaline liquid invades and adheres between the rotating shaft 72 and the power feeding portion 73,
There is a risk that the plating solution will adhere. Therefore, if the step of washing the work 71 with a strong acid or a strong alkaline solution or the plating process is performed many times, the outer peripheral surface of the rotating shaft 72 facing the power feeding portion 73 and the surface of the power feeding portion 73 facing the rotating shaft 72 are corroded. As a result, the work 71 cannot be energized with certainty, and the life of the rotary jig 70 is shortened.

Therefore, it is a technical object of the present invention to prevent the surface treatment liquid (for example, a plating treatment liquid) from adhering to the conductive portion of the rotating jig to improve the life of the rotating jig. It is a thing.

[0007]

The technical means taken in the present invention to solve the above technical problems is to apply a current to the member to be processed while rotating the member to be processed in the surface treatment liquid. A surface treatment rotary jig for surface-treating a member, comprising: a support portion for supporting a member to be treated;
A rotary shaft electrically connected to the support part for rotating the member to be treated, and one end electrically connected to one end of the rotary shaft so as to rotate in conjunction with the rotary shaft and the other end outside the surface treatment liquid. That is, the insulating coating layer is formed on the surface of the power supply wiring except for at least the other end of the power supply wiring, which is disposed inside the surface treatment liquid of the supporting portion and the rotating shaft.

[0008]

The operation of the above technical means will be described.

Since the insulating coating layer is formed on all the surfaces of the supporting portion and the rotating shaft exposed to the inside of the surface treatment liquid and the surfaces of the power supply wiring except at least the other end, even if the number of surface treatments is increased. Therefore, it is possible to reliably prevent the surface treatment liquid from adhering to the exposed portion of the surface treatment liquid of the rotating shaft, the work support portion and the power supply wiring. Therefore, it is possible to reliably prevent the rotary shaft, the support portion and the power supply wiring from being corroded and deteriorated, and the life of the rotary jig is improved.

Further, since one end of the power supply wiring is electrically connected to one end of the rotary shaft so as to rotate in association with the rotary shaft,
Even if the insulating coating layer is formed on all portions of the rotary shaft and the power supply wiring exposed in the surface treatment liquid, the transmission of current from the power supply wiring to the rotary shaft is not disturbed.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 is an overall configuration diagram of a rotary jig for plating according to this embodiment.

The rotating jig 10 shown in FIG.
2 is for conducting a work 14 having a complicated shape in 2 and plating the surface of the work 14 while rotating the work 14. The jig is a multi-axis rotation system and has a conductive rotating shaft 1.
3 exists in many columns (two columns in FIG. 1). A conductive work supporting portion 15 is fixed to one rotating shaft 13, and a plurality of (two in FIG. 1) works (members to be processed) 14 for plating treatment are provided on the work supporting portion (support portion) 15.
Is supported. The work 14 has a complicated hole. Here, all the workpieces 14 and the rotary shaft 13
The work support portion 15 is immersed in the plating treatment liquid 12 such as nickel, zinc, or copper filled in the plating treatment tank 11. The rotating shaft 13 is rotatably supported by a supporting plate 18, and is connected to a motor 17 via a gear mechanism 16.

One end of a power supply wire (power supply wiring) 19 is electrically connected to the left end of the rotary shaft 13 in the drawing, and the wire 19 is adapted to rotate in conjunction with the rotary shaft 13. Further, the other end of the wire 19 is disposed outside the plating treatment liquid 12, and the other end of the wire 19 is electrically connected to the power supply unit 20 so as to rotate in association with the wire 19. Further, the power feeding unit 20 is a cathode terminal 22a of the rectifier 22.
It rotates so as to come into contact with the power supply bar 21 electrically connected to the. Therefore, the negative charge is
Is supplied to the work 14 from the cathode terminal 22a through the power supply bar 21, the power supply unit 20, the power supply wire 19, the rotating shaft 13, and the work supporting unit 15, and the work 14 serves as a cathode.
An anode plate (not shown) is arranged in the plating solution 12 so as to face the work 14 and is electrically connected to the anode terminal 22b of the rectifier 22.

FIG. 2 is an enlarged cross-sectional view of the main part of the rotary jig shown in FIG.

As shown in FIG. 2, one end of the wire 19 is firmly fitted to the left end portion of the rotating shaft 13 and the other end is tightly fitted to the power feeding portion 20. Also, wire 1
9 has a U-shaped cross section so that both ends thereof are directed to the right in the drawing. In addition, as the material of the wire, SU
S, Cu, Fe, phosphor bronze, etc. are used. Here, a resin layer 23 having excellent chemical resistance and insulating properties is formed on all portions of the rotary shaft 13, the work support portion 15, and the support plate 18 exposed in the plating treatment liquid 11, and almost all of the wire 19 is formed. A similar resin layer 23 is formed on the surface (that is, the portion exposed to the inside and the outside of the plating treatment liquid 12). Examples of the material of the resin layer 23 include vinyl chloride, epoxy resin, Teflon and the like. The rotary shaft 23 is rotatably supported by the support plate 18 via a bearing 24.

Although the resin layer 23 is formed in this embodiment, the present invention is not limited to this. For example, a ceramic layer may be formed. Further, in this embodiment, not only the portion of the wire 19 exposed to the inside of the plating treatment liquid 12 but also the portion exposed to the outside thereof is covered with the resin layer 2.
However, the present invention is not limited to this, and the resin layer 23 may be formed only on the portion of the wire 19 exposed inside the plating treatment liquid 12.

The operation of the rotary jig 10 for plating processing constructed as described above will be described.

First, the rotating jig 10 is placed in the plating solution 12.
The work 14 supported by is placed. Next, the motor 17
When each rotating shaft 13 is rotated by the
Rotates in conjunction with the rotary shaft 13, and as a result, the work 14
Rotates in conjunction with the rotary shaft 13. At the same time, the power supply wire 19 firmly fitted to the left end of the rotary shaft 13 also rotates in conjunction with the rotary shaft 13, and as a result, the power supply unit 20 rotates in conjunction with the rotary shaft 13 and rotates in the power supply bar 21. Contact. As a result, negative charges are supplied from the cathode terminal 22a of the rectifier 22 to the work 14 via the power supply bar 21, the power supply unit 20, the power supply wire 19, the rotating shaft 13, and the work supporting unit 15. On the other hand, positive charges are supplied from the anode terminal 22b of the rectifier 22 to an anode plate (not shown) arranged to face the work 14. Therefore, the plating process is performed with the work 14 rotated. Here, since the plating process is performed while rotating the work 14, the centrifugal force of the work 14 suppresses the accumulation of air inside the hole of the work 14, and the work 14 has a part where the plating process is incomplete. Things will disappear.

With the increase in the number of times of the plating treatment as described above, the portion of the rotary jig 10 exposed to the plating treatment liquid 12 by the plating treatment liquid 12 (specifically, the rotary shaft 13, the work supporting portion 15, the support). Although there is a danger that the portion of the plate 18 exposed in the plating treatment liquid 12 will be corroded, in this embodiment, all portions of the rotating jig 10 exposed to the plating treatment liquid 12 have excellent chemical resistance and insulation. Since the conductive resin layer 23 is formed, the plating treatment liquid 12
Is surely prevented from adhering to the portions of the rotary shaft 13, the work support portion 15, the support plate 18, and the wire 19 exposed in the plating treatment liquid 12. Therefore, the rotary shaft 13, the work support portion 15, the support plate 18, and the wire 19 are reliably prevented from being corroded and deteriorated, and the life of the rotary jig 10 is improved.

Further, in this embodiment, one end of the power supply wire 19 is electrically connected to the left end of the rotary shaft 13 so as to rotate in conjunction with the rotary shaft 13, and the other end is exposed to the outside of the surface treatment solution. Therefore, even if the resin layer 23 is formed on all portions of the rotary shaft 13 and the wire 19 exposed in the plating treatment liquid 12, the electric current can be transmitted from the wire 19 to the rotary shaft 13.

Further, in this embodiment, the resin layer 23 is formed not only on the portion of the wire 19 exposed to the inside of the plating treatment liquid 12 but also on the portion exposed to the outside of the plating treatment liquid 12. The surface of the plating treatment liquid 12 vibrates due to the rotation, and a drop causes the plating treatment liquid 1 of the wire 19
2 There is no problem even if it is exposed to the outside.

Further, the power feeding wire 19 is bent so that both ends thereof face in the same direction, which is advantageous in terms of space.

In the present embodiment, the rotary jig for the plating treatment is explained, but the rotary jig of the present invention is not limited to this, and for example, the cleaning treatment in the pre-process of the plating treatment is possible. (Use strong acid or strong alkaline solution)
It can be used for surface treatment such as or alumite treatment.

[0025]

The present invention has the following effects.

During the surface treatment, the surface treatment liquid can be prevented from adhering to all portions of the supporting portion, the rotating shaft and the power supply wiring which come into contact with the surface treatment liquid, and the life of the rotating jig can be improved.

[Brief description of drawings]

FIG. 1 is an overall configuration diagram of a rotary jig for plating processing according to the present embodiment.

FIG. 2 is an enlarged sectional view of a main part of FIG.

FIG. 3 is an enlarged sectional view of an essential part of a rotary jig for plating according to a conventional technique.

[Explanation of symbols]

 10 Plating Treatment Rotating Jig (Surface Treatment Rotating Jig) 12 Plating Treatment Liquid (Surface Treatment Liquid) 13 Rotating Shaft 14 Workpiece (Processing Member) 15 Workpiece Support (Support) 19 Wire (Power Supply Wiring)

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Office reference number FI technical display location C25F 7/00 Q

Claims (1)

[Claims] 1. A surface treatment rotary jig for surface-treating the member to be treated by applying an electric current to the member to be treated while rotating the member to be treated in a surface treatment liquid. A support part for supporting, a rotation shaft electrically connected to the support part and rotating the member to be processed, and one end electrically connected to one end of the rotation shaft so as to rotate in association with the rotation shaft. And the other end of the power supply wiring of which the other end is disposed outside the surface treatment liquid and which is exposed to the surface treatment liquid of the support portion and the rotating shaft, and at least the other end of the power supply wiring. A rotary jig for surface treatment, characterized in that an insulating coating layer is formed on the surface excluding.