JP2000033594A - Cutting method for sheet member - Google Patents

Abstract

PROBLEM TO BE SOLVED: To cut and separate a product forming body corresponding to a product from a sheet member efficiently by cutting a cut line preset in a sheet member corresponding to a product component while rotating a rotary cutting member for cutting a sheet member by a cutting blade provided on the rotary cutting member. SOLUTION: A circular cutting blade 6a for longitudinal direction for cutting a cut line 5a along the longitudinal direction of a sheet member 1 is provided on each of both end faces of a rotary cutting member 7, and a cutting blade 6b for cross-direction of the sheet member 1 is provided on the side of the rotary cutting member 7. Accordingly, by rotating the rotary cutting member 7, the cut line 5a is cut by the circular cutting blade 6a, and a cut line 5b is cut by a rectilinear cutting blade 6b, thereby cutting and separating a product component (product) 2 from the sheet member 1 efficiently. Thus, the product 2 can be produced efficiently and vibration and noise in cutting and separating operation can be prevented efficiently.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a product such as a CSP (Chip Size Package) produced by using a sheet member on which electronic parts such as bare chips are mounted. The present invention relates to an improvement in a cutting method of a sheet member for cutting and separating a product structure (finished product or semi-finished product).

[0002]

2. Description of the Related Art Conventionally, for example, a PC board (Printed
An electronic component mounted on a plastic sheet member called a "circuit board" is molded with resin, and the formed sheet member is supplied and set at a predetermined position of a die (a receiving die) to punch a punch. By punching with
A product component corresponding to the product is cut and separated from the sheet member.

[0003]

In recent years, cost reduction has been demanded for the above-mentioned products, and productivity has been improved in a step of cutting and separating a product component corresponding to the product from the sheet member. It is becoming required. However, the method using the punch and the die described above requires a long time for the punch to reciprocate up and down,
Since the product structure cannot be efficiently cut and separated from the sheet member, the product structure (product) described above.
Has the disadvantage that it cannot be produced with high efficiency. Further, since the punch reciprocates up and down and punches out the sheet member, there is a problem that vibration and noise during operation are extremely large.

Accordingly, an object of the present invention is to efficiently cut and separate a product component corresponding to a product from a sheet member. Another object of the present invention is to efficiently prevent vibration and noise in a cutting and separating operation when cutting and separating a product component (product) from a sheet member.
Further, according to the present invention, it is possible to efficiently cut and separate a product component (product) from a sheet member, to produce the product with high efficiency, and to efficiently prevent vibration and noise in cutting and separating work. An object of the present invention is to provide a method for cutting a sheet member.

[0005]

SUMMARY OF THE INVENTION A method for cutting a sheet member according to the present invention for solving the above-mentioned technical problem is to cut and separate a product member corresponding to a product from the sheet member. The method, wherein a cutting line set in the sheet member corresponding to the product structure is cut by a cutting blade provided on the rotary cutting member while rotating a rotary cutting member for cutting the sheet member. The product component is cut and separated from the sheet member.

Further, a method for cutting and separating a sheet member according to the present invention for solving the above-mentioned technical problem includes a step of cutting a cutting line set along a width direction of the sheet member, and a step of cutting the sheet member. And the step of cutting the cutting line set along the longitudinal direction is performed substantially simultaneously.

A method for cutting a sheet member according to the present invention for solving the above-mentioned technical problem includes a step of cutting a cutting line set along a width direction of the sheet member, and a step of cutting the sheet member. And cutting the cutting line set along the longitudinal direction in any order.

[0008]

According to the present invention, as described above, the rotary cutting member provided with the cutting blade is moved in a predetermined direction while rotating with respect to the sheet member, thereby forming the sheet member. A cutting line in a product component range corresponding to a product component (product) can be cut by the cutting blade. That is, the cutting line along the longitudinal direction of the sheet member in the product structure area and the cutting line along the width direction of the sheet member in the product structure area are cut substantially simultaneously (or in any order). can do. Therefore, the product component can be efficiently cut and separated from the sheet member.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the drawings. FIG. 1 is an explanatory view illustrating a sheet member cutting method according to the present invention.

That is, the sheet member 1 shown in FIG. 1 is formed by resin sealing molding (coating) of an electronic component such as a bare chip mounted on a soft plastic sheet member, and an electronic part is formed on one surface of the sheet member. A resin molded article 3 of a part is formed, and the sheet member 1 has a product structure 2 corresponding to the resin molded article 3 (product) described above.
Are formed. A product component range 4 corresponding to the shape of the product component 2 cut and separated from the sheet member 1 is formed on the (other) surface of the sheet member 1 and the product component range 4 is formed. A cutting line 5 for cutting and separating (scheduled cutting line) is set along the outer periphery of. Therefore, by cutting the cutting line 5, the product component 2 (the resin molding 3) can be cut and separated from the sheet member 1. For example, the sheet member 1 is formed in a rectangular shape, and a required number of rectangular product component ranges 4 are set in the rectangular sheet member 1. Further, each side (the cutting line 5) in the rectangular product component range 4 is set, for example, to be parallel to the outer peripheral edge of the rectangular sheet member 1. In the illustrated example, in the rectangular product structure range 4, a longitudinal cutting line 5 (5a) is set in parallel along the longitudinal direction (long side) of the sheet member 1, and the sheet member A cutting line 5 (5b) in the width direction is set along the width direction (short side) of No. 1. Also, a cutting line 5 (5a) in each longitudinal direction of the product structure range 4 set on the sheet member 1
Are set on the same line (two lines in the illustrated example) along the longitudinal direction of the sheet member 1. The cutting line 5 serves as an outer peripheral edge of the product structure 2 cut and separated from the sheet member 1 by being cut.

FIG. 1 shows a cutting blade 6 having a required shape for cutting a cutting line 5 formed on the sheet member 1 described above.
A (cylindrical) rotary cutting member 7 (rotary cutter) provided with a (cutter) is shown, and the rotary cutting member 7 includes the rotary cutting member 7 and the sheet member 1.
A rotation drive mechanism 8 for rotating (turning over) the rotary cutting member 7 in a state where the rotary cutting member 7 is pressed against the surface is provided. Accordingly, the rotation cutting mechanism 7 is rotated by the rotation drive mechanism 8.
Is moved in a predetermined direction (the longitudinal direction of the sheet member 1 in the illustrated example) while rotating the sheet member 1, whereby the cutting line 5 of the sheet member 1 can be cut by the cutting blade 6 of the rotary cutting member 7. It is configured as follows.

Further, on both end surfaces of the rotary cutting member 7,
Cutting line 5 (5a) along the longitudinal direction of the above-mentioned sheet member 1
And a cutting line 5 (5b) along the width direction of the sheet member 1 is cut on the side surface of the rotary cutting member 7 on each side. A linear width direction cutting blade 6 (6b) is provided. Therefore, by rotating the rotary cutting member 7, the substantially circular cutting blade 6 (6a) causes the cutting line 5 (5
a) and the cutting line 5 (5b) can be cut by the straight cutting blade 6 (6b). In the illustrated example, in the substantially circular cutting blade 6 (6a), a blade portion of the cutting blade is not provided at a position corresponding to the cutting line 5 (5a) in each of the product component ranges 4. Further, in the illustrated example, one product component 2 can be cut and separated by rotating the rotary cutting member 7 once.

That is, by rotating the rotary cutting member 7 having the cutting blade 6 with respect to the surface of the sheet member 1, the rotary cutting member 7 is moved along the longitudinal direction of the sheet member 1. At the same time, the cutting line 5 (5a, 5b) of the product structure range 4 is cut by the cutting blade 6 (6a, 6b) provided on the rotary cutting member 7, whereby the sheet member 1 is cut into the product. The corresponding product components 2 can be cut and separated separately. Further, in the product structure range 4 formed on the sheet member 1, a cutting line 5 (5a) along the width direction of the sheet member 1 and the sheet member 1
Can be cut substantially simultaneously with the cutting line 5 (5b) along the longitudinal direction, so that the product component 2 can be efficiently cut and separated from the sheet member 1. Moreover, since the rotary cutting member 7 provided with the cutting blade 6 is rotated to cut and separate the product component 2 (product) from the sheet member 1, as compared with a configuration in which the sheet member is punched out by a conventional punch. Vibration and noise in the cutting and separating operation can be reduced, and the above-described vibration and noise can be efficiently prevented. Accordingly, the product member 2 (product) can be efficiently cut and separated from the sheet member 1 and the product can be produced with high efficiency, and the vibration and noise in the cutting and separating operation can be efficiently prevented. Can be provided.

Next, the embodiment shown in FIGS. 2A and 2B will be described. 2 (1) and FIG.
In the embodiment shown in (2), the cutting line along the width direction of the sheet member and the cutting line along the longitudinal direction of the sheet member in the range of the product structure formed on the sheet member. It is configured to cut sequentially.

That is, the sheet member 1 shown in FIGS. 2 (1) and 2 (2) is cut and separated from the above-mentioned sheet member 1 (a rectangular shape on which the resin-sealed molded body 3 is formed). A product component range 4 is set corresponding to the component 2, and a cutting line 21 (to be cut) in the width direction along the width direction of the sheet member 1 is provided around the product component range 4. Line) is set. Further, a cutting line 22 (planned cutting line) is set on the sheet member 1 along the longitudinal direction of the sheet member 1, and the cutting line 22 in the longitudinal direction extends around the outer periphery of the product component range 4. (In the illustrated example, two cutting lines 22). Also, in FIG. 2 (1),
A width direction rotary cutting member 24 provided with a width direction linear cutting blade 23 for cutting the width direction cutting line 21 is shown, and FIG. 2B shows the longitudinal direction cutting line 22. Longitudinal rotary cutting member 26 having a circular cutting blade 25 for cutting
It is shown. As in the embodiment shown in FIG. 1, each of the rotary cutting member 24 and the rotary cutting member 26 is provided with a rotation drive mechanism separately.

Therefore, as shown in FIG.
The width direction cutting line 21 of the sheet member 1 is cut by the width direction rotation cutting member 24, and then the sheet member 1 is cut by the longitudinal direction rotation cutting member 25 as shown in FIG. One longitudinal cutting line 22 is cut. That is, similarly to the embodiment shown in FIG. 1, the product component 2 can be efficiently cut and separated from the sheet member 1 described above. Further, similarly to the embodiment shown in FIG. 1, vibration and noise in the cutting and separating operation can be reduced, and the above-described vibration and noise can be efficiently prevented. Therefore, similarly to the embodiment shown in FIG. 1, the product component 2 (product) can be efficiently cut and separated from the sheet member 1 and the product can be produced with high efficiency, and vibration and noise in the cutting and separating operation can be obtained. And a method for cutting the sheet member, which can efficiently prevent the occurrence of the sheet member. The cutting line 21 shown in FIG.
(Shown by a solid line) shows a cutting line after being cut by the above-described width direction rotary cutting member 23.

In the embodiment shown in FIGS. 2 (1) and 2 (2), the longitudinal cutting line 22 is cut first, and then the width cutting line 21 is cut. May be adopted.

In each of the above-described embodiments, a rectangular product structure range set on the sheet member, that is, a cutting line set parallel to the longitudinal direction and the width direction of the sheet member is cut. Although the configuration described above is exemplified, the present invention can also be adopted when cutting a cutting line that is not parallel to the longitudinal direction and the width direction of the sheet member.

Although the plastic sheet member used in each of the above embodiments has been exemplified, a long (plastic) film or tape-like sheet member may be used as the sheet member. Can be.
Further, as the sheet member, for example, BGA (Ball Gr
Metal Carrier (Carrier) used for id Array)
Or a type in which a heat sink (Heat Sink) is attached to a metal carrier.

The present invention is not limited to the above-described embodiment, but can be arbitrarily and appropriately changed and selected as necessary without departing from the spirit of the present invention. It is.

[0021]

According to the present invention, a rotary cutting member provided with a cutting blade is rotated to convert a sheet member to a product structure (product).
Therefore, there is an excellent effect that the product component can be efficiently cut and separated from the sheet member.

Further, according to the present invention, since the rotary cutting member provided with the cutting blade is rotated to cut and separate the product component (product) from the sheet member, vibration and noise in the cutting and separating operation are reduced. In addition, there is an excellent effect that the above-described vibration and noise can be efficiently prevented.

Further, according to the present invention, a product structure (product) can be efficiently cut and separated from the sheet member, and the product can be produced with high efficiency, and vibration and noise in the cutting and separating operation can be efficiently reduced. This provides an excellent effect that a method for cutting a sheet member that can be prevented can be provided.

[Brief description of the drawings]

FIG. 1 is a schematic perspective view schematically showing a sheet member cutting method according to the present invention.

FIGS. 2 (1) and 2 (2) are schematic perspective views schematically showing a sheet member cutting method according to another embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Sheet member 2 Product structure 3 Resin-sealed molded body 4 Product structure range 5 Cutting line 6 Cutting blade 7 Rotary cutting member 8 Rotary drive mechanism 21 Cutting line 22 Cutting line 23 Cutting blade 24 Width direction rotary cutting member 25 Cutting Blade 26 Rotary cutting member for longitudinal direction

Claims (3)

[Claims] 1. A sheet member cutting method for cutting and separating a product component corresponding to a product from a sheet member, wherein a cutting line set corresponding to the product component is formed on the sheet member. Cutting the product construct from the sheet member by cutting with a cutting blade provided on the rotary cutting member while rotating the rotary cutting member. 2. The method according to claim 1, wherein the step of cutting the cutting line set along the width direction of the sheet member and the step of cutting the cutting line set along the longitudinal direction of the sheet member are performed substantially simultaneously. The method for cutting and separating a sheet member according to claim 1. 3. The method according to claim 1, wherein the step of cutting a cutting line set along the width direction of the sheet member and the step of cutting a cutting line set along the longitudinal direction of the sheet member are performed in any order. The method for cutting a sheet member according to claim 1.