CN213703698U

CN213703698U - Cutting knife die of narrow-frame flexible circuit board

Info

Publication number: CN213703698U
Application number: CN202021529947.9U
Authority: CN
Inventors: 邹平; 林建华
Original assignee: Xiamen G&p Electronics Co ltd
Current assignee: Xiamen G&p Electronics Co ltd
Priority date: 2020-07-29
Filing date: 2020-07-29
Publication date: 2021-07-16
Anticipated expiration: 2030-07-29

Abstract

The utility model relates to a cutting die of narrow frame flexible circuit board, wherein, this narrow frame flexible circuit board's main part width is less than 2 millimeters, and the frame width is less than 0.1 millimeter, and this cutting die includes spaced apart first cutting die part and second cutting die part, and wherein first cutting die part is used for the base of the main part of die-cut narrow frame flexible circuit board, and second cutting die part is used for all the other parts outside the base of die-cut narrow frame flexible circuit board. Split type is designed for the cutting die, so that the appearance of the narrow-frame flexible circuit board can be accurately cut, and the yield is greatly improved.

Description

Cutting knife die of narrow-frame flexible circuit board

Technical Field

The utility model relates to a flexible circuit board field specifically relates to a cutting die of narrow frame flexible circuit board.

Background

The flexible printed circuit board is a flexible printed circuit board which is made of polyimide or polyester film as a base material and has high reliability and excellent property, is called as a flexible printed circuit board or FPC for short, and has the characteristics of high wiring density, light weight and thin thickness. Fig. 1 shows a narrow frame flexible circuit board product 100, wherein the width d1 of the main body of the narrow frame flexible circuit board product 100 is 0.58 mm, and the width d2 of the frame is 0.09 mm. Such narrow frame flexible circuit board products 100 are generally produced by using panels, which are cut into individual products at a later stage as shown in fig. 3. Because the main part width of product is very little to the frame width is very narrow, arrange the material not smooth on the one hand when the cutting die that current whole was cut cuts, on the other hand damages the circuit easily, causes the product defective rate to be high enough.

Disclosure of Invention

The utility model aims at providing a cutting die of narrow frame flexible circuit board to solve above-mentioned problem. Therefore, the utility model discloses a specific technical scheme as follows:

the utility model provides a cutting die of narrow frame flexible circuit board, wherein, the main part width of this narrow frame flexible circuit board is less than 2 millimeters, and the frame width is less than 0.1 millimeter, and this cutting die includes first cutting die part and the second cutting die part of spaced apart, and wherein first cutting die part is used for die-cutting the base of the main part of narrow frame flexible circuit board, and the second cutting die part is used for die-cutting the remaining part outside the base of narrow frame flexible circuit board.

Further, the first cutter die part and the second cutter die part respectively comprise a plurality of cutter edges which are uniformly spaced by a first distance from top to bottom and are sequentially staggered by a second distance from right to left.

Further, the first distance is 1-2 mm.

Further, the knife edge of the first knife mold part is a straight knife edge.

Furthermore, the cutting knife die is also provided with a positioning hole corresponding to the positioning hole of the narrow-frame flexible circuit board to be cut.

Further, the cutting knife die is a single-point knife with a straight inner part and an inclined outer part.

The utility model adopts the above technical scheme, the beneficial effect who has is: split type is designed for the cutting die, so that the appearance of the narrow-frame flexible circuit board can be accurately cut, and the yield is greatly improved.

Drawings

To further illustrate the embodiments, the present invention provides the accompanying drawings. The accompanying drawings, which are incorporated in and constitute a part of this disclosure, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the embodiments. With these references, one of ordinary skill in the art will appreciate other possible embodiments and advantages of the present invention. Elements in the figures are not drawn to scale and like reference numerals are generally used to indicate like elements.

FIG. 1 is a schematic front view of a narrow frame flexible circuit board product;

fig. 2 is a schematic view of a cutting die for a narrow-frame flexible circuit board according to the present invention;

fig. 3 is a schematic diagram of a row of narrow-sided flexible circuit board products in a panel.

Detailed Description

The present invention will now be further described with reference to the accompanying drawings and detailed description.

Referring to fig. 1 to 3, a cutting die 1 for cutting a narrow-bezel flexible circuit board 100 shown in fig. 1 is described, the cutting die 1 including a first die portion 11 and a second die portion 12 which are spaced apart, wherein the first die portion 11 is used for punching a bottom edge of the narrow-bezel flexible circuit board, and the second die portion 12 is used for punching the rest of the narrow-bezel flexible circuit board except the bottom edge. The utility model discloses a separate die-cut with narrow frame flexible circuit board's base and remaining part, when die-cut at every turn promptly, the base of one row (row) of narrow frame flexible circuit board in the die-cut makeup and/or the all the other parts of one row (row) of adjacent narrow frame flexible circuit board have overcome current whole and have cut the problem that to have arranged the material not smooth and damage the circuit and caused the high defective rate.

Specifically, the first and

second die sections

11 and 12 each include a plurality of knife edges (four first knife edges 111 and four second knife edges 121 are shown). The

knife edges

111 and 121 are evenly spaced up and down a first distance and are sequentially staggered to the right by a second distance. In a specific embodiment, the narrow bezel flexible circuit board has a length of 63.91 mm, the finger-bearing portion has a length of 24.37 mm, the first distance is 1.78 mm, and the second distance is 24.37 mm. The first distance is typically set to 1-2 millimeters and the second distance is related to the shape of the narrow-bezel flexible circuit board.

In this embodiment, since the bottom edge of the narrow-bezel flexible circuit board is straight, the edge of the first cutting die portion is a straight edge.

For accurate positioning, the cutting die 1 is further provided with a plurality of positioning holes 13 corresponding to the positioning holes on the jointed board of the narrow-frame flexible circuit board to be cut.

Preferably, the cutting die 1 is a single-point knife with straight inside and inclined outside, so as to facilitate discharging. In one embodiment, the height of the cutting die 1 (including the cutting edge) is 23.8 ± 0.1 mm.

The working process of the present invention will be briefly described below, first, only the bottom edge of the row (row) of narrow-frame flexible circuit boards at the most side is positioned on the first cutting die part 11 of the cutting die 1, the rest of the jointed boards are all outside the cutting die 1, then the punching cylinder is operated to punch the bottom edge, then the jointed boards are moved to position the rest of the row (row) of narrow-frame flexible circuit boards on the second cutting die part 12 of the cutting die 1, the bottom edge of the adjacent row (row) is positioned on the first cutting die part 11 of the cutting die 1, then the punching cylinder is operated to punch the bottom edge of the row (row) of narrow-frame flexible circuit boards and the rest of the adjacent row (row) of narrow-frame flexible circuit boards, which is performed in sequence until the last row (row) of narrow-frame flexible circuit boards, at this time, the bottom edge of the last row (row) of narrow-frame flexible circuit boards is punched, the rest parts of the row (line) of narrow-frame flexible circuit boards are positioned on the second cutting die part 12 of the cutting die 1, and then the punching cylinder acts to punch off the rest parts to finish the cutting of a narrow-frame flexible circuit board spliced board.

While the invention has been particularly shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. The cutting die is characterized in that the width of a main body of the narrow-frame flexible circuit board is smaller than 2 mm, the width of a frame is smaller than 0.1 mm, the cutting die comprises a first die part and a second die part which are spaced, the first die part is used for punching the bottom edge of the main body of the narrow-frame flexible circuit board, and the second die part is used for punching the rest part of the narrow-frame flexible circuit board except the bottom edge.

2. The cutting die of claim 1, wherein the first die portion and the second die portion each include a plurality of knife edges that are evenly spaced apart a first distance up and down and sequentially staggered a second distance to the right.

3. The cutoff die set forth in claim 2 wherein the first distance is between 1 and 2 millimeters.

4. The cutting die of claim 2, wherein the edge of the first die portion is a straight edge.

5. The cutting die of claim 1, wherein the cutting die further comprises positioning holes corresponding to the positioning holes of the narrow-border flexible circuit board to be cut.

6. The cutting die of claim 1, wherein the cutting die is a single-point knife with straight inside and inclined outside.