JPS634541Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a liquid draining device used in manufacturing equipment for flexible circuit boards and the like.

When manufacturing short printed circuit boards, the required chemical spray treatment may be performed while sequentially feeding the boards individually onto a roller conveyor that is structured to prevent the boards from falling. However, if the circuit board is thin and flexible, such as a flexible circuit board, the board may get wrapped around the liquid draining roll inside the device, causing damage such as bending or wrinkles, resulting in the problem that it cannot be used in the next process. It has occurred.

This invention solves these problems by
A set of liquid draining rolls each consisting of a plurality of first rolls and second rolls that are softer than the first rolls and have a slightly larger outer diameter and a smaller width, arranged alternately on a shaft. Provided is a liquid draining device in which the first rolls are arranged in parallel so that they are in contact with each other, and the second roll is crushed on the contact line, and a flexible circuit board passing through the device is provided. Immediately after the liquid is drained one after another, each of the rolls becomes oriented straight in the transport direction by the elastic restoring force of the second roll.
The fear of winding around the liquid draining roll as in the prior art is suitably eliminated, and the required liquid draining process can be carried out efficiently and with a high yield.

The drawing shows one embodiment of the invention, in which 1 is a first roll, 2 is a second roll whose material is softer than this roll, and the second roll 2 has an outer diameter smaller than that of the first roll 1. They are slightly larger and narrower, and are arranged and fixed alternately on the shaft 3 as shown in the figure. As shown in FIGS. 2 and 3, such liquid draining rolls are arranged in pairs so that the first rolls 1 of each liquid draining roll are in contact with each other. The second roll 2 is therefore crushed on its line of contact and comes into line with the first roll 1. In the figure, both rolls 1
Although the rolls 1 and 2 are arranged so as to be in contact with each other at the same position, it is also possible to arrange the rolls 1 and 2 of the upper and lower two liquid draining rolls so that they are staggered.

According to the above liquid draining device of the present invention, the third
As shown in the figure, the flexible circuit boards 4, etc. to be drained by this device are sequentially drained and passed by a set of drain rolls as in the conventional case, but one set in the transfer direction is Before and after the contact area of the liquid draining roll, each second roll 2 returns to its original state due to its elastic restoring force and acts to form an appropriate gap between it and the first roll 1. Therefore, even such a flexible and thin substrate 4 passes straight in the transport direction without being wrapped around the first roll 1, and damage caused by the wrapping of the substrate 4 can be suitably prevented. Therefore, it is possible to perform liquid draining processing smoothly and with high yield in the circuit board manufacturing process, and the device can be provided at low cost due to its simple configuration, and maintenance and inspection are easy. be.

In the above embodiment, the liquid draining rolls are arranged alternately around the axis of the first and second rolls, but it is also possible to arrange thin flexible materials at appropriate intervals on a single first roll. Even if it is configured to wrap around the
Almost the same effect can be achieved.

[Brief explanation of the drawing]

FIG. 1 is a partially sectional front view of a liquid draining roll used in the present invention, FIG. 2 is a conceptual front configuration diagram of a liquid draining device according to the present invention, and FIG. 3 is a side sectional view of FIG. 2. 1...first roll, 2...second roll, 3
...Axis, 4...Flexible circuit board.

Claims (1)

[Scope of utility model registration request] Each liquid draining roll has a plurality of first rolls and a second roll that is softer than the first roll and has a slightly larger outer diameter and a smaller width, which are arranged alternately on the axis. A liquid draining device comprising two liquid draining rolls arranged in parallel so that the first rolls are in contact with each other, and the second roll is crushed on the line of contact.