JPH0742036B2 - Method and device for divided film winding - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for continuously separating and winding a narrow multi-row pattern product from a thin wide film.

[0002]

2. Description of the Related Art Conventionally, it has been extremely difficult to continuously separate and wind a product having a narrow multi-row pattern from a thin wide film. The reason is that in the prior art, the slitter method of cutting a wide film using a slitter is adopted, so if the film is too thin,
This is because the film is unfavorably torn. Therefore, in the slitter method, the width is narrow (up to about 70 m
m), a film having a large thickness (about 0.125 mm or more) was processed.

[0003]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a method for continuously separating and winding a product having a narrow multi-row pattern from a thin film having a wide width, which is difficult to carry out by a conventional technique using a slitter. Is to provide.

[0004]

SUMMARY OF THE INVENTION According to the present invention, products are continuously formed in a multi-row pattern, and the multi-row pattern products are continuously formed in each row from a film in which scrap is interposed between the products. A method of separating and winding, wherein a step of forming a mesh-like or dotted line-like cut at the boundary between the product and scrap, and suction with a suction hole on the rotating surface and the inside of which is depressurized over a predetermined angle range The film with the cuts formed is wound around a drum at a constant angle, the suction drum is rotated, and while the product moves through the predetermined angle range, the product is stripped from the scrap at the cuts. And a step of winding the product and the scrap separately.

Further, the present invention is an apparatus for continuously separating and winding the multi-row pattern products from a film in which the products are continuously formed in a multi-row pattern and scrap is interposed between the products. A suction drum around which a film having a knitted or dotted cut is formed at the boundary between the product and the scrap, and the scrap is stripped off from the scrap by passing through the suction drum. And a means for winding the product, the suction drum is provided with a circumferential wall having suction holes on its surface, a means for rotating the circumferential wall, and introduced into the circumferential wall to be connected to a vacuum system. And a pair of fixed partition walls that are fixed to the suction means and that extend in the direction of the circumferential wall and that allow the tip to slidably contact the inner surface of the circumferential wall, the circumferential wall and the pair of fixed partition walls. To provide a film cutting winding apparatus characterized by forming a picture reduced pressure region is made.

[0006]

In the present invention, a mesh-shaped or dotted-line-shaped cut is formed in advance at the boundary between the multi-row pattern product and the scrap, and the film is wound around the suction drum at a constant angle and the drum is rotated. The scrap and the product can be continuously separated without damaging the product.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to the drawings.

FIG. 1 shows a product 4 formed by continuously forming a multi-row pattern, in this case, six rows, on a continuous wide film 2.
FIG. 4 is a plan view showing the products 4 in each row are connected via scraps 6, and the scraps 6 are attached to both ends of the film 2.
Are formed. In this embodiment, the product 4 corresponds to a region where a semiconductor device will be formed later.

A mesh-shaped or dotted line-shaped cut 8 is continuously formed in the longitudinal direction of the film 2, and the product 4 and the scrap 6 are separated from each other at the cut 8 in a subsequent process. Inside the cut 8 is a pair of guide holes 1 used to transfer the product 4 after the product 4 has been separated.
0 is formed.

A pair of sprocket holes 12 are formed along the longitudinal direction on the outer side of the film 2, which engages with a sprocket, which will be described later in a later step, to move the film 2 in a predetermined direction. It acts to let you.

FIG. 2 is an enlarged view of the mesh-shaped or dotted line-shaped cut 8. The size of the cut 8 must be such that it can be surely cut in the subsequent cutting process, but not cut in the transfer process before the cutting process. When the length of 14 is 1 mm,
The distance 15 between the holes 14 is about 0.2 to 0.5 mm. Usually, the hole 14 is formed simultaneously with the guide hole 10 by etching using a resist pattern.

FIG. 3 is a schematic view of a film dividing and winding device used for carrying out the method of the present invention. The film cutting / winding device forms products in a multi-row pattern in the longitudinal direction.
A film unwinding part 16 for sending out the formed film , a suction drum or suction roll 24 for continuously dividing the film 2 supplied from the film unwinding part 16 into a product 4 and a scrap 6, and a separated product foil a product spool 48, each wound in a single column 38, that have a scrap spool 44 for winding the separated scrap foil 40.

A wide thin film 2 before being divided and a slip sheet or a spacer 18 are wound around the film unwinding portion 16. The film unwinding portion 16 is configured to be braked so as to apply appropriate tension to the film 2 and the interleaving paper 18. The interleaving paper 18 unwound from the film unwinding unit 16 is wound up by the interleaving paper winding unit 20. on the other hand,
The film 2 is a sprocket 22 for correcting the meandering.
To the suction drum or suction roll 24 via. The suction drum 24 has a suction hole 26 in a circumferential wall 25, and is configured to reduce the pressure inside. The details are shown in FIGS. 4 and 5.

FIG. 4 shows a sectional view of the suction drum 24,
A suction pipe 28 connected to a vacuum system (not shown) is introduced into the suction drum 24 through one side wall 30 of the suction drum 24. The suction drum 24 is a drive device 3
It can be rotated at 2. A through hole 34 for drawing a vacuum inside the suction drum 24 is formed in a part of the surface of the suction pipe 28.

FIG. 5 shows a perspective view of the suction drum 24,
The side wall 30 shown in FIG. 4 is omitted. As shown in FIG. 5, a pair of fixed partition walls 36 connect the suction pipe to the circumferential wall 25.
It extends in the direction of. A seal member (not shown) is formed at the tip of the fixed partition wall 36 so as to slidably contact the inner surface of the circumferential wall 25. The space formed between the circumferential wall 25 of the rotating suction drum 24 and the fixed partition wall 36 is evacuated to form a reduced pressure area A. As will be described later, when the film 2 is wound around the suction drum 24 and the suction drum is rotated, the film 2 contacting the outer peripheral surface of the circumferential wall 25 forming the region A is attracted to the suction hole 26, In order to close the suction hole 26, the area A is decompressed, and the film 2 is suction-held.

Suction drum 24 constructed as described above
As shown in FIG. 3, the film 2 is wound about 180 degrees through the sprocket 22 on the rotating surface of the suction drum 24, and when the suction drum 24 is rotated, the film 2 is sucked from the inside on the rotating surface of the suction drum 24. Move while being. As a result, when the film 2 is separated from the suction drum 24, the film 2 is separated into the product foil 38 and the scrap foil 40 at the boundary of the cut 8. The scrap foil 40 peeled off from the film 2 is sucked by the suction drum 24.
It is wound up on a scrap spool 44 via a tension roll 42 drawn from. On the other hand, the product foil 38 separated from the film 2 passes through the guide roll 46 and is wound up on the product spool 48. At this time, the interleaf paper 52 supplied from the interleaf paper spool 50 is wound up integrally with the product foil 38. Be done. In this embodiment, an example is shown in which the products 4 continuously formed in 6 rows on the continuous wide film 2 are separated and wound in each row, so that the spool 48 for winding the product foil 38 is shown. Are shown as six.

[0017]

According to the method of the present invention, a narrow multi-row pattern product can be continuously separated and wound from a thin wide film, for example, a film having a thickness of 50 microns and a width of 250 mm. is there. Further, even in the case of a film that requires low-speed processing, the present invention is useful for improving productivity because the product having a multi-row pattern can be continuously separated and wound. The method of the present invention is preferably used for producing a two-layer or three-layer TAB film and a TAB film composed of two kinds of metals.

[Brief description of drawings]

FIG. 1 is a plan view showing a part of a film in which products are continuously formed in a multi-row pattern and scrap is interposed between the products.

FIG. 2 is an enlarged view of a stitch-shaped or dotted line-shaped cut.

FIG. 3 is a schematic diagram of an apparatus used to carry out the method of the present invention.

FIG. 4 is a sectional view of a suction drum.

FIG. 5 is a perspective view of a suction drum.

[Explanation of symbols]

 16 Film unwinding section 2 Wide film 4 Multi-row pattern product 6 Scrap 8 Mesh or dotted line break 24 Suction drum 38 Product foil 40 Scrap foil 48 Product spool 44 Scrap spool

Claims (2)

[Claims] 1. A product multi-row pattern is continuously formed in the longitudinal direction, each column separating the pre-Symbol products in continuous manner a single row of a film scrap interposed between the products
In the method of winding up to, a step of forming a mesh-like or dotted-line cut in the longitudinal direction at the boundary between the product and scrap, and having a suction hole on the rotating surface and depressurizing the inside over a predetermined angle range. The suction drum is wound around the suction drum at a certain angle and the suction drum is rotated, while the product moves through the predetermined angle range. And a step of winding the product and the scrap separately. To 2. A multi-row pattern products are formed continuously in the longitudinal direction, separating the pre-Symbol products in continuous manner a single row of a film scrap interposed between the products for each column A winding device, which is a suction drum around which a film having mesh- like or dotted-line cuts formed in the longitudinal direction is wound around a boundary between the product and scrap, and which passes through the suction drum. Means for winding the product stripped from the scrap at the boundary of the cut line, the suction drum, a circumferential wall having suction holes on the surface, and means for rotating the circumferential wall, Suction means introduced into the inside of the circumferential wall and connected to the vacuum system, and a pair of fixed partition walls fixed to the suction means, extending in the circumferential wall direction, and slidably contacting the tip with the inner surface of the circumferential wall. And having the circumferential wall and the pair of fixings Film cutting winding device, which comprises forming a reduced pressure area defined by walls.