JPH0737680B2 - Power supply method - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a power feeding method for a surface treatment apparatus, and more particularly to a power feeding method for performing tact feeding or continuous feeding in an electrolytic cell having a plurality of pitches.

(Prior Art) Generally, in a surface treatment apparatus that performs electroplating or other electrolytic treatment on an object to be processed, when a plurality of objects to be processed are tact-fed or continuously conveyed in the same tank instead of batch processing. In addition, the following methods are known as power feeding methods when the current control is different for each object to be processed.

For example, as shown in FIG. 3, a rail that supplies power to the object to be processed.
10 is a common one pole (cathode) of a plurality of rectifiers 11, and the other pole corresponding to the pitch of the object to be processed is divided for each rectifier to correspond to the progress (feed) of the object to be processed 12 The method of shifting to the preset current value. As another example, as shown in FIG. 4, a rail for feeding power to the object to be processed 12 or a power feeding seat 13 is provided at the stop position of the object to be processed 12, one pole of the corresponding rectifier 11 is connected, and the counter electrode is also stopped. There is proposed a method of separately installing each position, connecting the other pole of the rectifier 11 and shifting to a preset current value for each object to be processed.

(Problems to be Solved by the Invention) By the way, in the above-described conventional power feeding method, when the current value for each object to be processed is shifted, the current temporarily fluctuates or is interrupted, so that strict current control is required. It was an obstacle to the surface treatment. Further, the method of shifting to a preset current value for each object to be processed has a drawback that the cost of the rectifier and the control means for shifting increases.

The object of the present invention was made in view of the above-mentioned drawbacks,
An object of the present invention is to provide an easy power supply method without changing or interrupting the current, and without requiring control for shifting.

(Means for Solving the Problem) A power supply method according to the present invention is a device for hanging an object to be processed in an electrolytic treatment tank and performing tact or continuous processing at a plurality of pitches, for supplying power to the object to be processed. A power supply brush corresponding to each power supply rail with the same number of processing pitches is attached to a hanger having a function, and a plurality of rectifiers corresponding to each hanger and a stop position set in the electrolytic treatment tank are provided respectively. Each of the rectifiers has one common electrode, and the current control unique to each hanger can be continuously performed through the same rectifier during the electrolytic treatment period.

(Operation) As described above, in the power feeding method according to the present invention, the current value is shifted between the rectifiers without being interrupted by the control by the same rectifier during the electrolytic treatment of the object to be processed. Instead, individual current control can be continuously performed on the object to be processed.

Embodiment An embodiment of the present invention will be described below with reference to the accompanying drawings.
FIG. 1 is a perspective view of an essential part of an apparatus showing an embodiment of the present invention,
FIG. 2 is a wiring diagram showing a case where the present invention is used in a plating apparatus. In both figures, in the power feeding method of the present invention, the rectifiers 3 connected to the power feeding rails 2 are moved up and down by the drive mechanism in the same number as the stop positions of the objects to be processed 4 set in the electrolytic bath 1. At the same time, a hanger 5 for supplying power to the object to be processed 4, a power supply brush 6 arranged in order at a position corresponding to the power supply rail 2 in a part of the hanger 5, and a stop position set in the electrolytic cell 1. Each of the rectifiers has one common electrode (anode) 7 disposed therein, and the power supply rail 2 is uniquely connected as the other pole of each rectifier 3 so that the object 4 to be treated is tact or continuous in the electrolytic cell 1. The same rectifier 3 controls until it is sent and the processing in one electrolytic cell 1 is completed.

As described above, in the power feeding method according to the present invention, the current is controlled individually by the same rectifier during the electrolytic treatment of the object to be processed, so that the current can be controlled individually without interrupting the current supply or shifting the current value between the rectifiers. it can.

(Effects of the Invention) As described in detail above, according to the power feeding method of the present invention, in a device that hangs an object to be processed in an electrolytic treatment tank and performs tact or continuous processing at a plurality of pitches, the object to be processed is To the hanger that has the function of supplying power to the object, attach the corresponding power supply brushes to the same number of power supply rails as the number of processing pitches, set a plurality of rectifiers corresponding to each hanger, and stop set in the electrolytic treatment tank. Since each hangar has a common one pole disposed at each position, and the current control unique to each hanger can be continuously performed through the same rectifier during the electrolytic treatment period, the object to be treated can be stored in the treatment tank. Even if the object moves, it is possible to perform constant current control for each object to be processed without causing fluctuation or interruption of the current.

[Brief description of drawings]

FIG. 1 is a perspective view of an essential part of an apparatus showing an embodiment of the present invention,
FIG. 2 is a wiring diagram showing an embodiment when the present invention is used for plating, FIG. 3 is a wiring diagram showing an example of a conventional power feeding method, and FIG. 4 is another wiring method of the conventional power feeding method. It is a wiring diagram which shows an example. 1 ... Electrolyzer, 2 ... Power supply rail, 3 ... Rectifier, 4 ...
… Processing object, 5 …… Hanger, 6 …… Power supply brush, 7…
… Common one pole (anode).

Claims (1)

[Claims] 1. In an apparatus for hanging an object to be processed in an electrolytic treatment tank and performing tact or continuous processing at a plurality of pitches, a hanger having a function of supplying power to the object to be processed has the same number as the number of processing pitches. Attach a power supply brush corresponding to each power supply rail, and a plurality of rectifiers corresponding to each hanger,
The rectifier common one pole disposed at each of the stop positions set in the electrolytic treatment tank, the current control unique to each hanger can be continuously performed through the same rectifier during the electrolytic treatment period. And the power supply method.