JPH0319145B2 - - Google Patents

Description

Detailed Description of the Invention (Industrial Application Field) The present invention relates to a prepreg prepared by impregnating a base material with a thermosetting resin varnish and drying it, which is used in the production of a copper-clad laminate for a printed wiring board, and furthermore, a paper, synthetic resin film,
The present invention relates to a method for taking out a predetermined plurality of sheet materials such as metal foils from a stack.

(Background of the Invention) When manufacturing copper-clad laminates for printed wiring boards (hereinafter abbreviated as copper-clad laminates), a base material such as paper, glass, or cloth is usually impregnated with thermosetting resin varnish, and then dried. The required number of prepreg sheets, which are semi-cured varnish-impregnated sheets, are stacked together according to the thickness of a single copper-clad laminate, and a copper foil is attached to one or both sides of the prepreg, which is then heated and pressed as a prepared product. Manufactured by

In addition, when manufacturing laminated boards, insulating boards, decorative boards, etc., the required number of prepregs are stacked on top of each other depending on the thickness of each board, and the prepregs are heated and pressed.

When manufacturing such copper-clad laminates, insulating boards, decorative boards, etc., the molding equipment used for heating and pressing is usually a multi-stage lamination press, and between each stage there are many sets of prepared products. is inserted. At this time, in order to maintain the smoothness of the copper-clad laminate, the in-stage structure consists of alternating combinations of prepared products and press plates, and after molding, the press plates are separated from the prepared products that have become products. Recycled and used.

When combining prepared products and press plates alternately, the process of stacking the required number of sheets of prepreg and copper foil on the press plate placed in the normal preparation position is repeated.

Conventionally, the work of stacking the required number of prepregs was done manually.

Therefore, there is a limit to the prevention of foreign matter contamination due to variations in the skill level of workers, fibers from clothes generated by workers, human hair, etc., and productivity cannot be expected to be improved due to the inability to shorten working time. ,
When the press size is increased in order to increase efficiency, there are disadvantages such as the fact that manual handling of set products and copper foil becomes impossible due to quality maintenance and handling weight considerations.

Therefore, mechanization has been considered, but it has not been put to practical use because it is difficult to take out the required number of prepregs.

(Objective of the Invention) The present invention has been made in view of the above points, and it mechanically cuts a predetermined number of sheet materials from a large number of sheet materials such as prepreg, paper, synthetic resin film, and metal foil. This provides a method for extracting the data.

(Structure of the Invention) The present invention is a method for taking out a sheet material including the following steps A to E.

That is, A. A large number of sets of predetermined stacked sheets (hereinafter referred to as set products) are arranged so that they are offset by at least one side from the adjacent upper and lower predetermined set products, and that every other set is in the same position. The process of loading.

B: A process of shifting the set below the top and pressing the stacked part downward to form a gap between it and the set at the top.

C. A step of pushing the first guide into the gap formed in step B and pushing up the edge of the uppermost set.

D. A step in which a second guide is pushed into the lower surface of the pushed-up uppermost set, and the second guide moves upward to maintain the uppermost set in a defined position.

E. Grasping and ejecting the edge of the top set that is maintained in position.

Below, the paper base material is impregnated with phenolic resin varnish,
The present invention will be specifically explained using a dried prepreg as an example.

As shown in Figure 1, 8 sheets of prepreg, 1 m long and 2 m wide, made by impregnating and drying phenolic resin varnish on a paper base material of 0.2 mm thickness, are stacked together to form one set 1, and 500 sets of this set are assembled. Adjacent upper and lower sets are stacked so that their predetermined sides are shifted by about 50 mm, and every other set is in the same position.

The size of the prepreg and the number of sheets in one set are arbitrarily determined depending on the final shape thickness of the synthetic resin laminate, copper clad laminate, etc. Generally, the size of the prepreg is 0.5 to 5 m in length and width, and 2 to 50 sheets are used in one set. It is preferable to stack normal set items at a height that makes it easy to work with. Usually a height of 0.5 to 2 m is preferred. Set items are stacked with at least one side offset from the set items above and below, but it is sufficient to offset only one side. The width of the shift depends on the elasticity of the sheet material, but in the case of prepreg, it is generally preferably 30 to 70 mm. As shown in Fig. 2, in order to create a gap between the uppermost set of prepregs and the prepregs below, the ends of the stacked prepregs of the lowermost set are held down using an end holding jig 2. Press.

The end holding jig 2 is a fork-shaped piece consisting of a plurality of curved pins with a groove in the center.
It is rotated downward by 40 to 60 degrees using a rotary drive device or jig such as a cylinder, cam, rotary actuator, etc., and the tips of the pins are used to press downwardly the ends of the prepregs stacked in a staggered manner.

This creates a gap between the uppermost set of prepregs and the lower set of prepregs. This gap is set so that the gap between the edge of the prepreg in the uppermost set and the prepreg in the lower set is 55 mm in order to prevent any residue from being left behind.
It is preferable to have a gap of at least mm.

When pressing the staggered stacked prepregs with an end holding jig, the staggered stacked prepregs should be pressed so that a gap is formed between the corner of the top set of prepregs and the pressed set of prepregs. Press at a position within 15 cm from the prepreg edge 4 perpendicular to the edge 3 of the staggered stacked portion, preferably at a position 6 to 7 cm from the prepreg edge 4. This is the next step of inserting the second guide from the angle of the top set of prepregs and sliding the second guide along the prepreg edge 4 perpendicular to the edge 3 of the staggered stacked part. If necessary.

Next, as shown in FIG. 3, the first guide 5 is inserted into the gap between the uppermost set of prepregs and the lower set of prepregs, and the edge 3 of the uppermost set of prepregs is pushed up.

The first guide 5 is a rectangular plate whose top end is shaved off.

This first guide 5 is arranged in the groove of the fork-shaped end holding jig, and when the end holding jig presses the prepreg stacked in a shifted manner, it falls onto the prepreg surface pressed by its own weight, and the It is inserted between the uppermost set of prepregs and the lower set of prepregs on the prepreg surface.

It is preferable that the first guide 5 has a convex portion formed at the tip of the lower surface so that the entire lower surface does not come into contact with the prepreg surface below the top.

When the edge of the prepreg of the uppermost set is pushed up by the first guide 5, the corner of the prepreg is also pushed up. It is preferable to insert it from a position within 15 cm from the prepreg edge 4 perpendicular to the prepreg edge 4, usually from a position 7 to 8 cm from the prepreg end surface. This is necessary in the next step when the second guide is inserted from the corner of the uppermost set of prepregs and moved along the edge of the prepreg perpendicular to the edge of the staggered stacked portion.

The first guide 5 lifts and maintains the entire edge 4 perpendicular to the staggered stacked edges 3 to a predetermined position where it can be fed out, as shown in FIG. do.

Two second guides 6, 6' are inserted from the corners of the second stage set product. (If the size is small, one piece is sufficient.) The second guides 6, 6' have a propeller-like or spatula-like shape and are made of polished stainless steel, so that they do not scratch the bottom surface of the set product. It is designed to maintain smooth contact to avoid sticking.

This second guide is horizontally rotated by a cam cylinder, rotary actuator, or motor in order to take it in and out of the lower surface of the set, and is moved vertically by a driving device such as a cylinder and horizontally by a cylinder, tune, etc.

In addition, the vertical movement is operated by an air cylinder,
It rotates to the left, center, right, etc., and its operation is driven by a motor.

A series of operations of the second guides 6, 6' will be explained with reference to FIGS. 4 and 5.

FIG. 4 is a drawing seen from the front, FIG. 5A is a drawing seen from the top, and FIG. 5B is a drawing seen from the left side. The order of operations will be explained below.

(1) Orient the curved surfaces of the tip ends of the spatulas of the second guides 6, 6 toward the set product removal side.

(2) After the first guide operates, the second left guide 6 rotates 90 degrees toward the center in the take-out direction.

(3) The second left guide will rise.

(The second right guide 6' rises to make it easier to enter between the upper set items.) (4) The second right guide 6' rotates 90 degrees in the take-out direction to the center.

(5) Both the left and right second guides 6, 6' move horizontally to predetermined positions.

(6) The second right guide 6' rises.

(In order to simplify the mechanism for grasping the set product in the next process operation.) (7) After the operation of removing the upper set product (transferred to the next process), the left and right second guides rotate 90 degrees in the direction to take out the next set product. do.

(8) The left and right second guides move in the direction of taking out the next set of items.

(9) After moving, the left and right second guides descend.

The operation for taking out the next set of items is the reverse of the above operation.

In the above operation item "7", the set item gripping process is performed.

Next, as shown in FIG. 6, the edge of the prepreg set maintained at a predetermined position is checked by the gripping jig 7, and the set is sent forward and taken out without dragging the lower prepreg set.

This gripping jig consists of a presser plate 8 that receives and presses the upper surface of the prepreg set product, and a set product that rotates around the same shaft as the shaft to which the presser plate is fixed, and whose rotation radius is maintained (lifted) by a second guide. and a receiving plate 9 which is smaller than the gap between the lower set product and the lower set product. The presser plate 8 presses the end of the prepreg set from above and aligns it to a predetermined position for sending out the set. It is preferable that the presser plate 8 is placed near the second guide 6, and the height of the lower surface of the presser plate is usually about the same as the height of the lower surface of the second guide 6 to prevent misalignment within the same set of prepregs. It will serve as a preventive measure. The prepreg set product whose upper surface is pressed by the pressing plate 8 is fixed and held by the receiving plate 9 on the lower surface.

In addition, in order to take out the prepreg set product, a rotating device is used that revolves around the top of the entire jig after gripping it, but in order to feed out the prepreg set product at the bottom without moving it, the gap is usually 2 to 4 kg/cm. ²
It is preferable to blow in pressure-cleaned air. Ionized air is more effective. Generally, prepregs for synthetic resin laminates and copper-clad laminates have impregnated resin in a semi-hardened state, so the prepregs tend to stick together and do not have static electricity. With the addition of self-importance factors, this tendency becomes stronger, so it is necessary to completely separate it from the lower set product.

Separation of the set items during feeding does not need to be performed using pressurized air; mechanical separation may be performed, such as by inserting a suitable guide between the set items.

FIG. 7 is a front view of the device of the present invention.

(Effects of the Invention) The method of the present invention automates the reliably taking out the sheet material for one product without causing "slippage" between the sheet materials, making it possible to create an automatic feeding device between press plates. It became. This achieves the following effects.

(1) Labor saving becomes possible.

(2) Does not require operator skill.

(3) Production planning is established.

(4) Human contamination due to worker factors will be eliminated.

(5) Improving work operation speed.

(6) It is possible to accommodate larger sheet materials as the size increases.

(7) Sustainability of the same work for a long time or significant improvement in productivity.

[Brief explanation of the drawing]

The drawings show an apparatus for carrying out the method of the present invention, in which Fig. 1 is a perspective view of a set product, Fig. 2 is a perspective view of an end holding jig, and Fig. 3 is a perspective view of the first guide. , FIG. 4 is a front view of the second guide, FIG. 5A is a plan view of the second guide, FIG. 5B is a side view of the second guide, and FIGS. 6A and B are views of the gripping jig. The perspective view and FIG. 7 are front views of the entire device. Explanation of symbols, 1... Set product, 2... End holding jig, 5... First guide, 6, 6'... Second guide,
7...Gripping jig.

Claims (1)

[Scope of Claims] 1. A method for taking out a sheet material including the following steps A to E. A. A large number of sets of predetermined plurality of sheet materials stacked one on top of the other, with at least one side shifted from the adjacent upper and lower predetermined plurality of stacked sheet materials,
Also, the process of loading every other set in the same position. B: Pressing downward the staggered stacked portion of a predetermined plurality of laminated sheet materials below the top to form a gap between the staggered stacked portion of the predetermined plurality of laminated sheet materials at the top. . C. A step of pushing the first guide into the gap formed in step B and pushing up the edge of the uppermost predetermined plurality of stacked sheet materials. D Push the second guide into the lower surface of the pushed-up uppermost predetermined plurality of sheet materials, and the second guide moves upward, and the uppermost predetermined plurality of sheets are stacked. The process of maintaining the edges of sheet material in a defined position. E. Gripping and ejecting the edge of the uppermost predetermined stack of sheet materials maintained in a defined position.