CN216442707U

CN216442707U - Touch screen protection film cutting die

Info

Publication number: CN216442707U
Application number: CN202123073734.7U
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: 2022-05-06
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 blade inner side at any position of the blade is designed in an inclined mode, the width of the blade inner side at any position of the blade is adjusted in a local position to be different, the extrusion degree of a touch screen back protection film is different during die cutting, local bubbles exist at the back protection edge of a tearing hand position after TP defoaming, and the effect of film tearing is achieved due to the fact that the bubbles at the corresponding position are communicated with the outside during film tearing.

Description

Touch screen protection film cutting die

Technical Field

The utility model relates to the field of manufacturing of touch screen protective films, in particular to a knife die for a touch screen protective film.

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 on the protection of the finished touch screen are higher and higher.

The touch screen protective film is an essential object for protecting the 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 inductor after binding, because there is the bubble after the laminating, need carry out the defoaming, get rid of the laminating bubble through pressure and temperature, consequently, the gluey process high temperature high pressure process back of touch screen back protection film, its glue film adhesion reinforcing, the back protection film combines inseparabler with the film (being film) back. 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 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 located in the middle of the blade, the blade inner side is located on the blade inner side, and the blade inner side at any position of the blade is designed in an inclined mode.

The inclined design of the blade at the inner side of the blade is that an inclined blade is designed between the top end position of the tip of the blade and the substrate of the cutting die, and the shape of the inclined cutting blade is a right-angled triangle with any gradient.

In some preferred embodiments, the width of the inner side of the blade (i.e. the width of the non-inclined point) is 0.02-0.03mm, such as 0.02mm, 0.025mm, 0.03 mm. The width of the inner side of the blade point refers to the width of a perpendicular line from the inner side of the blade point to the tip end of the blade point.

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 close to 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 schematic view of a tangential plane structure of the blade with an inclined design of the inner side of the blade (in which a is an included angle between the inclined plane of the blade at the outer side of the blade and the vertical direction, and B is an included angle between the inclined plane of the blade at the inner side of the blade and the vertical direction;

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 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 blade of the blade inner side 2 at any position of the blade is designed to be inclined.

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 is a schematic view of a tangent plane structure of a blade inside the blade with an inclined design (i.e., position X and/or position Y in fig. 1), in which an illustrative situation of the inclined design is given, the inclined design of the blade inside 2 is that an inclined blade is designed between the top end position of the blade tip 3 and the blade mold base plate 1, and the shape of the inclined cutting blade is a right triangle with any slope.

In addition, the middle angle B in fig. 3 is the angle between the blade inner 2 blade bevel and the vertical direction, in this embodiment, the degree of B is the same as the degree of a, and is 15 °, and in other embodiments, the degree of B may be 16 °, 17 °, 18 °, 19 °, 20 °, or other degrees.

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

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 outside (4) set up in the outside of blade, blade point (3) are located the centre of blade, blade inboard (2) are located the inboard of blade, the design of inclining is done to the blade of the inboard (2) of blade of any position of blade.

2. The touch screen protective film cutting die according to claim 1, wherein the inclination of the blade inside (2) is designed to form an inclined blade from the top position of the blade tip (3) to the cutting die substrate (1).

3. The touch screen protection film cutting die according to claim 1, wherein the width of the blade inner side (2) is 0.02mm, 0.025mm, 0.03 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 protective film cutting die according to claim 1, wherein the angle between the blade bevel on the inner side (2) of the blade 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.