JPH066457U - Workpiece holding jig - Google Patents

Abstract

(57) [Summary] [Purpose] Inexpensive, short-term production, and
Provided is a surface treatment jig which can deal with various kinds of objects by simply changing the position of the hooking pin. [Structure] A metal hook 5 and a hooking pin 6 are inserted into a desired position in a frame 7 made of a conductive plastic.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention keeps the object soaked in the processing liquid when electrolytic surface treatment such as electrolytic plating, alumite coating, and electrodeposition coating is applied to plastic or metal parts (object to be processed). It relates to a jig for doing.

[0002]

[Prior art]

 As a conventional jig for holding an object to be treated for electrolytic surface treatment, for example, a jig having a structure as shown in FIG. 1 is used to energize the object to be treated from the processing apparatus side.

This jig is composed of a frame 1 having a hook 1a at the upper end made of a metal material such as copper or iron and a hooking pin 2 made of a stainless material. In order to prevent the plating film from depositing on the metal part of the jig during processing, and to prevent the deterioration of the jig due to chemicals during the treatment process as much as possible, the frame part is made of a chemical resistant material such as vinyl chloride or polyethylene It was configured to be coated with the coating agent 3 having excellent properties (details of parts a and b in FIG. 1 are shown in FIGS. 2 and 3).

Further, the hooking pin 2 may be made of metal of various shapes and materials depending on the shape and material of the object to be processed and the processing steps. As shown in FIG. 3, the hooking pin 2 and the frame 1 are used. Or, depending on the shape of the jig, the frames were connected by welding.

[0005]

[Problems to be solved by the device]

 Since the conventional jig is entirely made of metal, the weight is heavy, and the frame 1 and the hooking pin 2 have a structure in which electrical continuity is secured by joining metal members such as welding, which is troublesome to manufacture. Also, since it was difficult to change the position of the hooking pin of the jig once manufactured, the plating factory needed to manufacture or purchase a jig according to the shape of the object to be processed.

Therefore, an object of the present invention is to provide a surface treatment jig which can be manufactured at low cost in a short period of time and can cope with many kinds of objects by simply changing the position of the hooking pin. To do.

[0007]

[Means for Solving the Problems]

 In order to achieve the above object, the present invention has a structure in which a metal hook 5 and a hooking pin 6 are inserted into desired positions in a conductive plastic frame 7 formed by injection molding or the like. . For this conductive plastic, a resin such as polypropylene or vinyl chloride, which has excellent chemical resistance to the processing liquid, is used as the base resin.

[0008]

【Example】

Hereinafter, the present invention will be described with reference to the preferred embodiments shown in the accompanying drawings. Shown in FIG. 4 is a jig for plating a molded part made of ABS resin. Reference numeral 5 is a copper hook that is set on a cathode bus bar (not shown) of the processing device during electrolytic copper plating, nickel plating, and gold plating. 7 is a conductive plastic based on a resin with excellent chemical resistance such as polypropylene resin or vinyl chloride. A conductive fiber of an appropriate length is mixed into the base resin by the master pellet method at about 10-40%. Then, the fillers are uniformly dispersed without being cut, and the fillers are physically bonded to each other to form a network structure. Its volume resistance is 1 to 10 ^-3 Ω · cm, the conductivity required for electrolytic surface treatment is ensured, and the conductive fibers are hardly exposed on the molding frame. Does not precipitate. As an example of the conductive fiber, a copper fiber having a diameter of 50 μm and a length of 5 to 6 mm is suitable, and the mixing ratio in this case was 15% by weight. Reference numeral 6 denotes a stainless steel hooking pin for holding the component to be treated, which is provided for electrical connection with the electroless nickel-phosphorus alloy plating film which has been subjected to the previous process on the substance to be treated.

Details of parts c and d in FIG. 4 are shown in FIGS. As shown in FIG. 5, the hook 5 is inserted into the inside of the frame 7, and the hooking pin 6 is inserted into a position suitable for holding an object to be processed as shown in FIG. By doing this, during the electroplating process, between (electroless plating layer on the surface of the object to be processed)-(hooking pin 6)-(frame 7)-(hook 5)-(cathode bus bar of the plating apparatus). Electrical continuity is established, and a plating film of copper, nickel, gold, etc. can be formed on the object to be processed.

According to this embodiment, there are the following effects.

(1) The weight of the jig is about ¼ of that of the conventional one, and the physical fatigue of the operator is reduced.

(2) The jig manufacturing cost is 50% or more low, and the manufacturing time is significantly shortened.

(3) When the number of lots to be processed is small, it is possible to easily improve it by pulling out the hooking pin 6 of the existing jig and inserting it in a desired position without making a new jig. It

Needless to say, the jig of the present invention can be used as a jig for alumite treatment, electrodeposition coating treatment, or barrel plating treatment other than the above plating treatment. .

[0015]

[Effect of device]

 According to the configuration of the present invention, the main components of the jig are made of plastic, and the simple structure of inserting the jig conductive metal portion into the plastic has the following effects. 1. Since material cost and processing cost can be significantly reduced, it can be manufactured at low cost, and jigs can be manufactured with a short delivery time. 2. By reducing the weight, it is possible to reduce the burden on the processing operator and reduce the load on the automatic transfer device. 3. When changing the shape of the treated parts or responding to similar parts, it is possible to easily respond by changing the position of the holding parts such as the hook pins of the existing parts (it is possible to give the jig some versatility).

[Brief description of drawings]

FIG. 1 is a perspective view of a conventional surface treatment jig.

FIG. 2 is an enlarged perspective view of a conventional conduction hook portion (a portion).

FIG. 3 is an enlarged view of a hooking portion (b portion) of a conventional object to be processed.

FIG. 4 is a perspective view of a surface treatment jig of the present invention.

FIG. 5 is an enlarged perspective view of a hook portion (c portion) of the present invention.

FIG. 6 is an enlarged view of a hooking part (d part) of the object to be processed of the present invention.

[Explanation of symbols]

 5 Hook 6 Hooking pin 7 Conductive plastic frame

Claims (1)

[Scope of utility model registration request] 1. A holding jig for an object to be electrolytically surface-treated such as electrolytic plating, alumite, and electrodeposition coating, which is immersed in an electrolytic treatment liquid with a metal hook to which a current is supplied from the treatment device side. A surface characterized in that a metal hooking pin that comes into contact with an object to be processed is integrally connected via a jig frame made of a conductive plastic whose base plastic is a resin having high chemical resistance to a processing liquid. An object holding jig for processing.