JPS6111227Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to an improvement of a partial water washing device of an automatic partial plating device, and in particular, a part in which a notch is provided in one part of a guide rail on which a workpiece to be partially plated runs. This relates to a water washing device.

It is well known that gold plating is generally performed on objects to be processed, such as connector contacts for electronic exchanges, because high reliability is required. However, when the entire surface of the connector contact is plated with gold, the proportion of gold in the cost of the connector increases. Therefore, the gold plating of the connector contacts is carried out by automatic partial plating to the minimum necessary extent. Such a conventional partial flushing device is shown in FIG. 1, in which a is a plan view and b is a side sectional view. In the figure, 1 is a washing tank made of synthetic resin, etc., 2 is an object to be treated such as a connector contact made of an elastic material, and 3
4 is the residual processing liquid adhering to the object to be processed 2;
6 is a water supply pipe that supplies water 5; 6 is a guide rail that is attached to the washing tank 1 and forms a contact portion 61 on which the object to be treated 2 runs; and 7 is a weir that stores the water 5.

In this configuration, a workpiece 2 that has undergone base plating, such as a connector contact for an electronic exchange, moves in the direction of arrow A along a guide rail 6 and is guided to a washing tank 1 before gold plating. The remaining processing liquid 3 attached to the object 2 inside
It is designed to be washed. However, in this washing tank 1, there was a problem that the residual processing liquid 3 adhering to the contact side end of the object 2 was running in contact with the contact part 61 of the guide rail 6, so that it could not be washed. .

The purpose of the present invention is to provide a notch in the contact portion of the guide rail in order to solve the above problems. In order to achieve the aforementioned objectives,
The present invention provides a partial washing device in which a predetermined portion of the object to be treated is washed with water by running a part of the object to be treated in the form of a long strip that has been partially plated on two guide rails. The present invention is characterized in that a notch is provided in at least a portion of one contact portion of the guide rail that comes into contact with an object. Embodiments of the partial flushing device according to the present invention will be described in detail below with reference to the drawings.

Figure 2 is a diagram for explaining one embodiment of the present invention.
is a plan view, and b is a side sectional view. In FIG. 2, the partial flushing device of this invention is equipped with a flushing tank, a water supply pipe, a partial weir, a guide rail, etc. as in FIG. 1, but is characterized by an improved guide rail. Therefore, parts other than the guide rails are given the same reference numerals as in FIG. 1, and explanations of these parts will be omitted here. The guide rail 8 that characterizes the present invention is that a notch 811 is formed in the contact portion 81 of the guide rail 8.

The remaining processing liquid 3 adhering to the contact portion 21 of the object 2 to be gold-plated and the contact side end portion 22 is washed in the washing tank 1 between each plating process. The remaining processing liquid 3 can be easily removed. However, since the contact side end portion 22 is in contact with the contact portion 81 of the guide rail 8, the residual processing liquid 3 adhering to the contact side end portion 22 cannot be easily removed. Therefore, a notch 811 is formed in a part of the contact portion 81 of the guide rail 8 so that the remaining processing liquid 3 on the contact side end portion 22 can be cleaned at the same time as the contact portion 21.

In addition, in this embodiment, a notch 8 is provided in the guide rail 8.
11, but if a protrusion is provided in the contact portion 81 other than the notch 811, a gap will be created between the guide rail 8 and the workpiece 2, and liquid drainage will be improved.
Furthermore, even better cleaning becomes possible.

As is clear from the above explanation, the partial washing device of the present invention can remove the remaining processing liquid more completely than the conventional partial washing device, prevent it from mixing with the plating solution, and improve the plating quality. ,
It can be expected that the life of the treated object will be extended.

[Brief explanation of the drawing]

FIG. 1 is a plan view for explaining a conventional partial flushing device, b is a side sectional view, and FIG. 2 is a plan view for explaining an embodiment of a partial flushing device according to the present invention. b is a side sectional view. In the figure, 1 is a washing tank, 2 is an object to be treated, 3 is a residual treatment liquid, 4 is a water supply pipe, 5 is water, 6, 8 and 9 are guide rails, 7 is a weir, 21 is a contact part, 22
is the contact side end, 61 and 81 are the contact parts, 811
indicates a notch.

Claims (1)

[Scope of utility model registration request] In order to wash a predetermined part of the object with water by running a part of the object to be treated in the form of a long strip with partial plating on two guide rails, a partial rail is installed to control the washing range. In a partial flushing device in which a weir is provided, a water supply pipe is arranged below the partial weir, water is supplied into the partial weir through the water injection pipe, and water overflows from the upper end of the partial weir. . A partial washing device, characterized in that a notch is provided in at least a part of one contact portion of the guide rail that the object to be treated comes into contact with.