CN215395663U

CN215395663U - Touch screen protection film cutting die

Info

Publication number: CN215395663U
Application number: CN202123073669.8U
Authority: CN
Inventors: 丛建成; 张永秀; 尉旭政; 解思成
Original assignee: Yantai Zh Tech Co ltd
Current assignee: Yantai Zh Tech Co ltd
Priority date: 2021-12-09
Filing date: 2021-12-09
Publication date: 2022-01-04
Anticipated expiration: 2031-12-09

Abstract

The utility model relates to the field of manufacturing of touch screen protection films, in particular to a touch screen protection film cutting die which comprises a cutting die substrate and a blade, wherein the blade is arranged on the cutting die substrate and comprises a blade inner side, a blade tip and a blade outer side, the blade outer side is arranged on the blade outer side, the blade tip is arranged in the middle of the blade, the blade inner side is arranged on the blade inner side, the width of the blade inner sides of two adjacent corners of the blade is widened, the blade inner side widths are adjusted to be different through local positions, so that different extrusion degrees are caused to a touch screen back protection film during die cutting, local bubbles are arranged on the back protection film edge of a tearing hand position after TP defoaming, and the bubbles are communicated with the outside due to the corresponding positions when the touch screen protection film is torn, and the effect of tearing the film is achieved.

Description

Touch screen protection film cutting die

Technical Field

The utility model relates to the field of manufacturing of touch screen protection films, in particular to a touch screen protection film cutting die.

Background

With the development of smart life, touch screens have become mainstream input devices for improving human-computer operation interfaces, such as mobile phones, PDAs, multimedia, public information query systems, and the like. Because the touch screen is easily damaged in the transferring process, the requirements for protecting the finished touch screen are higher and higher.

The touch screen protective film is an essential object for protecting a touch screen, and mainly has the function of protecting a touch screen sensor and preventing the touch screen from being scratched, polluted, deformed and the like in the transferring process. The current TP process is to laminate the cover plate with the bound sensor first, and because there are bubbles after the lamination, defoaming needs to be carried out, and the lamination bubbles are removed through pressure and temperature, therefore, after the glue of the touch screen back protection Film is subjected to the high-temperature and high-pressure process, the adhesive force of the glue layer is enhanced, and the back protection Film is combined with the back of the Film (i.e. Film) more tightly. When the module is assembled, the protective film on the back of the touch screen needs to be torn off, and then the touch screen is attached to the full-surface or assembled back glue. Therefore, it is important to improve the problem that the touch panel back surface protective film is difficult to peel off.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems, the utility model provides a cutting die capable of effectively improving the difficulty in peeling off a protective film on the back surface of a touch screen.

The touch screen protective film cutting die mainly comprises a cutting die substrate and a cutting edge, wherein the cutting edge is arranged on the cutting die substrate and comprises a cutting edge inner side, a cutting edge tip and a cutting edge outer side, the cutting edge outer side is arranged on the cutting edge, the cutting edge tip is positioned in the middle of the cutting edge, the cutting edge inner side is positioned on the cutting edge inner side, the width of the cutting edge inner sides of two adjacent corners of the cutting edge is widened, and the widened width refers to the widened distance from the cutting edge inner side to the perpendicular line of the cutting edge tip.

In some preferred embodiments, the non-widened width (i.e., the normal width) of the inner side of the blade is 0.02-0.03mm, such as 0.02mm, 0.025mm, 0.03 mm.

In other preferred embodiments, the width of the blade after widening inside is 0.05-0.1mm, that is, the width of the blade after widening inside at the "two adjacent corners" is 0.05-0.1 mm. In some specific embodiments, the width of the blade at the position of the two adjacent corners after being widened is 0.05mm, 0.055mm, 0.06mm, 0.065mm, 0.07mm, 0.075mm, 0.08mm, 0.085mm, 0.09mm, 0.095mm and 0.1 mm.

In some embodiments, the angle between the blade slope at the outer side of the blade and the vertical direction is 15-20 °, preferably 15 °, 16 °, 17 °, 18 °, 19 °, 20 °.

In some embodiments, the included angle between the blade slope inside the blade and the vertical direction is 15 to 20 °, preferably 15 °, 16 °, 17 °, 18 °, 19 °, and 20 °.

In some preferred embodiments, the included angle between the blade slope at the outer side of the blade and the vertical direction is the same as the included angle between the blade slope at the inner side of the blade and the vertical direction.

In some preferred embodiments, an angle between the blade slope at the outer side of the blade and the vertical direction is different from an angle between the blade slope at the inner side of the blade and the vertical direction.

According to the knife die provided by the utility model, the inner side widths of the knife edges are adjusted to be different through local positions, so that the extrusion degree of the touch screen back protective film is different during die cutting, local bubbles exist at the back protective edge of the hand tearing position after TP defoaming, and the bubbles at the corresponding position are communicated with the outside during tearing off the release film, so that the effect of film tearing is achieved. The cutting die provided by the utility model is suitable for the condition that the metal circuit is far away from the edge of a product.

Drawings

FIG. 1 is a schematic view of a cutting die according to the present invention;

FIG. 2 is a sectional view of the cutting die according to the present invention under normal conditions, wherein A is an angle between an outer edge bevel of the edge and a vertical direction, B is an angle between an inner edge bevel of the edge and the vertical direction, and C is a width from an inner side of the edge to a vertical line from the tip of the edge;

FIG. 3 is a sectional view of a knife mold with a widened blade inside, wherein A is an angle between a blade bevel outside the blade and a vertical direction, B is an angle between a blade bevel inside the blade and the vertical direction, and C is a width from the blade inside to a vertical line from the blade tip;

in the figure: 1-knife mold base plate, 2-blade inside, 3-blade tip, 4-blade outside.

Detailed Description

In order to make the present invention better understood by those skilled in the art, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1, the present embodiment provides a touch screen protective film cutting die, which includes a cutting die substrate 1 and a blade, wherein the blade is disposed on the cutting die substrate 1, the blade includes a blade inner side 2, a blade tip 3, and a blade outer side 4, the blade outer side 4 is disposed on the outer side of the blade, the blade tip 3 is located in the middle of the blade, the blade inner side 2 is located on the inner side of the blade, and the width of the blade inner side 2 of two adjacent corners (such as X and Y positions in fig. 1) of the blade is widened.

Referring to fig. 2, fig. 2 shows a schematic view of a tangent plane structure of a normal cutting die, where an angle a is an angle between an inclined plane of a blade 4 on the outer side of the blade and the vertical direction, and in this embodiment, the angle is 20 °, and in other embodiments, the angle of a may be 15 °, 16 °, 17 °, 18 °, 19 °, or other degrees.

Referring to fig. 3, fig. 3 shows a schematic view of a tangent plane structure of a blade at a widened position (i.e., position X and/or position Y in fig. 1) inside the blade, where an angle B is an angle between an inclined plane of the blade 2 inside the blade and a vertical direction, in this embodiment, the degree of B is the same as that of a and is 20 °, and in other embodiments, the degree of B may be 15 °, 16 °, 17 °, 18 °, 19 ° or other degrees.

In the present embodiment, referring to fig. 2, the width (i.e., C) of the blade inner side 2 in the normal position (i.e., the position where the blade inner side is not widened) is 0.03 mm. In other embodiments, C may also be 0.02mm, 0.025mm, 0.03mm wide, or other thicknesses.

In the present embodiment, the widened width of the blade inner side 2 at the position X and/or the position Y is 0.05mm, see fig. 3. In other embodiments, the width of the blade inner side 2 of position X and/or position Y may also be 0.05mm, 0.055mm, 0.06mm, 0.065mm, 0.07mm, 0.075mm, 0.08mm, 0.085mm, 0.09mm, 0.095mm, 0.1mm, or others.

When the adhesive tape is used, the other positions (namely any position except the position X and/or the position Y) are designed as normal blades, the back protective film can keep certain adhesive force when the OCA is torn off from the release film in the attaching operation, the back protective film cannot be tilted and peeled off in the operation, the position X and/or the position Y are designed as the blades widening the inner side of the blades, the larger the width is, the heavier the material edge is extruded when the material edge is punched, therefore, the material is stressed when the material edge is punched, the material deformation is large, obvious bubbles exist at the edge of the protective film at the corresponding position, and the effect of tearing the film can be achieved because the bubbles at the corresponding position are communicated with the outside when the release film is torn off.

The above-mentioned embodiments are described in more detail, but the utility model is not to be construed as being limited to the scope of the utility model. It should be noted that, for those skilled in the relevant art, various changes and modifications can be made without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. The utility model provides a touch-sensitive screen protection film cutting die, a serial communication port, touch-sensitive screen protection film cutting die include cutting die base plate (1) and blade, the blade setting is on cutting die base plate (1), the blade include blade inboard (2), blade point (3), blade point outside (4) set up in the outside of blade point, blade point (3) are located the centre of blade point, blade point inboard (2) are located the inboard of blade point, the width of the blade point inboard (2) of the adjacent two angles of blade point is widened.

2. The touch screen protection film cutting die according to claim 1, wherein the width of the inner side (2) of the blade, which is not widened, is 0.02-0.03 mm.

3. The touch screen protection film cutting die according to claim 1, wherein the width of the widened blade inside (2) is 0.05-0.1 mm.

4. The touch screen protection film cutting die according to claim 1, wherein the angle between the blade slope of the blade outer side (4) and the vertical direction is 15-20 °.

5. The touch screen protection film cutting die according to claim 1, wherein the angle between the blade slope of the blade inner side (2) and the vertical direction is 15-20 °.

6. The touch screen protective film cutting die according to claim 1, wherein the angle between the blade bevel of the blade outer side (4) and the vertical direction is the same as the angle between the blade bevel of the blade inner side (2) and the vertical direction.

7. The touch screen protective film cutting die according to claim 1, wherein the angle between the blade bevel of the blade outer side (4) and the vertical direction is different from the angle between the blade bevel of the blade inner side (2) and the vertical direction.