CN221066584U - Diaphragm punching and cutting die, device and composite diaphragm - Google Patents

Abstract

The embodiment of the application provides a diaphragm punching cutter die, a device and a composite diaphragm, wherein the diaphragm punching cutter die comprises a cutter die body, the cutter die body is provided with a punching side and a back side which are oppositely arranged, and the punching side faces towards a composite diaphragm to be punched so as to punch a target composite diaphragm on the composite diaphragm to be punched; and the edge area of the stamping side is provided with a stamping die which is used for stamping and forming a meshing embossing on the edge part of the target composite membrane.

Description

Diaphragm punching and cutting die, device and composite diaphragm

Technical Field

The application relates to the technical field of diaphragm punching, in particular to a diaphragm punching cutter die, a device and a composite diaphragm.

Background

The composite membrane is an assembly membrane formed by sequentially laminating a plurality of single-layer membranes and sequentially bonding the single-layer membranes by adopting glue or other adhesives, and is widely applied to the field of backlight display. In the related art, a target membrane with a required shape and size can be obtained by punching the composite membrane; in the punching process, delamination failure is easy to occur at the edge of the target membrane, so that the membrane layer structure of the target membrane is damaged.

Disclosure of utility model

The embodiment of the application provides a diaphragm punching die, a diaphragm punching device and a composite diaphragm, which can avoid layering failure at the edge of a target diaphragm obtained by punching, ensure that the target diaphragm has a tightly adhered film structure and improve the reliability and quality of the target composite diaphragm.

In one aspect, an embodiment of the present application provides a diaphragm punching die, including a die body having a punching side and a back side disposed opposite to each other, the punching side facing a composite die to be punched to punch a target composite diaphragm on the composite die to be punched; and the edge area of the stamping side is provided with a stamping die which is used for stamping and forming a meshing embossing on the edge part of the target composite membrane.

In some embodiments, the diaphragm punch die includes a heating structure disposed in correspondence with the stamp to heat the stamp.

In some embodiments, the heating structure is an electrical heating element disposed inside the diaphragm punch die, the electrical heating element and the die are in thermally conductive connection.

In some embodiments, the orthographic projection of the heating structure on the stamping side coincides with the stamping die.

In some embodiments, the stamp is annularly disposed along an edge of the stamping side.

In some embodiments, the stamping die has a plurality of stamping teeth arranged at intervals in sequence, and the extending direction of the stamping teeth and the edge of the stamping side are arranged obliquely.

In some embodiments, the target composite membrane has a display region and a non-display region surrounding the display region, the stamp is disposed corresponding to the non-display region, and the bite embossing is formed in the non-display region of the target composite membrane.

In some embodiments, the width of the stamp is 0.25 to 0.35mm.

In some embodiments, the die body is a regular polygonal cylinder or cylinder; when the cutting die body is a regular polygon cylinder, the stamping side and the back side are respectively formed on two opposite sides of the regular polygon cylinder along the axial direction of the regular polygon cylinder; when the cutting die body is a cylinder, the stamping side and the back side are respectively formed on two opposite sides of the cylinder along the axial direction of the cylinder.

On the other hand, the embodiment of the application provides a film punching device, which comprises a bearing table, a driving element and the film punching cutter die in any embodiment, wherein the bearing table is used for bearing and mounting a composite film to be punched, and the film punching cutter die is arranged above the bearing table; the driving element is connected with the back side of the diaphragm punching and cutting die and is used for driving the diaphragm punching and cutting die to move up and down so as to enable the diaphragm punching and cutting die to be close to or far away from the bearing table.

In a third aspect, an embodiment of the present application provides a composite membrane, including a plurality of membrane layers stacked in sequence; and the edge part of the composite membrane is provided with a meshing embossing so that the plurality of membrane layers are meshed in sequence at the edge part.

In some embodiments, the composite film sheet has a display area and a non-display area surrounding the display area, and the snap emboss is formed in the non-display area of the composite film sheet.

According to the embodiment of the application, the embossing die is arranged in the edge area of the punching side of the cutting die body, so that the embossing die can be utilized to emboss the edge part of the target composite membrane in the punching process, and further, the embossing relationship between all the membrane layers in the target composite membrane is formed at the edge part by utilizing the embossing die, so that all the membrane layers in the target composite membrane form a tightly attached embossing edge sealing structure at the edge part, the layering failure of the edge of the target membrane obtained by punching is avoided, and the reliability and the forming quality of the target composite membrane obtained by punching are improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a diagram illustrating an isometric view of a die for a diaphragm punch according to some embodiments of the present application;

FIG. 2 is an enlarged view of the area M of the die of FIG. 1;

FIG. 3 is a schematic view of a projection of a die of a diaphragm punch on a punch side according to some embodiments of the present application;

FIG. 4 is a side view of a schematic block diagram of a die for stamping a diaphragm according to some embodiments of the present application;

FIG. 5 is a side view projection block diagram of a die cutting apparatus for die cutting film according to some embodiments of the present application;

FIG. 6 is a partial cross-sectional block diagram of a composite membrane provided in accordance with some embodiments of the application.

Description of main reference numerals:

1-diaphragm punching cutter die, 10-cutter die body, 11-punching side, 111-punching die, 1111-punching tooth, 12-backside, 20-heating structure, 2-bearing table, 3-driving element, 4-composite diaphragm, 41-film layer, 42-snap embossing.

Detailed Description

The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to fall within the scope of the application.

In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the drawings are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more of the described features. In the description of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

"A and/or B" includes the following three combinations: only a, only B, and combinations of a and B.

The use of "adapted" or "configured" in this disclosure is meant to be an open and inclusive language that does not exclude devices adapted or configured to perform additional tasks or steps. In addition, the use of "based on" is intended to be open and inclusive in that a process, step, calculation, or other action "based on" one or more of the stated conditions or values may be based on additional conditions or beyond the stated values in practice.

In the present application, the term "exemplary" is used to mean "serving as an example, instance, or illustration. Any embodiment described as "exemplary" in this disclosure is not necessarily to be construed as preferred or advantageous over other embodiments. The following description is presented to enable any person skilled in the art to make and use the application. In the following description, details are set forth for purposes of explanation. It will be apparent to one of ordinary skill in the art that the present application may be practiced without these specific details. In other instances, well-known structures and processes have not been described in detail so as not to obscure the description of the application with unnecessary detail. Thus, the present application is not intended to be limited to the embodiments shown, but is to be accorded the widest scope consistent with the principles and features disclosed herein.

As shown in fig. 1 to 3, on one hand, the embodiment of the application provides a film punching die 1, which can be used for punching a target composite film on a composite film to be punched, and can avoid layering failure at the edge of the punched target composite film, ensure that the target film has a tightly adhered film structure, and improve the reliability and the forming quality of the target composite film.

The diaphragm punching die 1 comprises a die body 10, the die body 10 having oppositely disposed punching sides 11 and a back side 12, the punching sides 11 facing towards the composite diaphragm to be punched to punch a target composite diaphragm on the composite diaphragm to be punched. The edge region of the punching side 11 is provided with a punching die 111, and the punching die 111 is used for punching out the nip embossing 42 on the edge portion of the target composite film sheet.

When the composite die to be punched is punched by the diaphragm punching die 1, the punching side 11 is contacted with the composite die to be punched, and the punching force is applied to the latter by the die body 10 through the punching side 11, so that the area contacted with the punching side 11 on the composite die to be punched is gradually deformed and finally separated from the composite die to be punched, thereby forming the target composite diaphragm consistent with the shape and the size of the diaphragm punching die 1. In the punching process, the embossing die 111 is simultaneously brought into contact with the edge portion of the target composite film sheet, and the biting embossing 42 is embossed in the edge portion of the target composite film sheet; the occlusion embossing 42 presents a concave-convex surface shape, so that an occlusion relationship can be formed between all film layers in the target composite film at the edge part, the delamination trend of all film layers at the edge part is overcome by utilizing the occlusion force generated by the occlusion relationship, and all film layers in the target composite film form a tightly attached edge sealing structure at the edge part.

Compared with the related art, the film punching cutter die 1 provided by the embodiment of the application is provided with the punching die 111 in the edge area of the punching side 11, and can be used for punching the edge part of the target composite film by using the punching die 111 to form the meshing embossing 42, so that the meshing relation between all film layers in the target composite film is formed at the edge part by using the meshing embossing 42, and all film layers in the target composite film form a tightly-adhered meshing edge sealing structure at the edge part, thereby avoiding layering failure at the edge of the target film obtained by punching and improving the reliability and the forming quality of the target composite film obtained by punching.

As shown in fig. 1-4, in some embodiments, the diaphragm punch die 1 may include a heating structure 20. The heating structure 20 is provided corresponding to the imprint mold 111 to heat the imprint mold 111. By providing the heating structure 20, the imprint mold 111 can be heated to a preset temperature interval; when the stamping die 111 stamps the edge part of the target composite membrane, the stamping die 111 can heat and soften the edge part of the target composite membrane together, and then hot-press edge sealing is carried out on the edge part of the target composite membrane, and each membrane layer in the target composite membrane forms a multiple connection relationship of softening adhesion and tight occlusion at the edge part in a hot-press mode, so that the reliability and the forming quality of the target composite membrane obtained by punching are further improved.

The type of heating structure 20 may be determined according to actual needs, and embodiments of the present application are not limited thereto. In some examples, the heating structure 20 may be an electrical heating element. An electrical heating element may be provided inside the diaphragm punch die 1 and is thermally connected to the stamp 111 to transfer heat generated by the heat generation to the stamp 111. The type of the electric heating element can be determined according to actual needs, and for example, a metal electric heating element, a nonmetal electric heating element and the like can be adopted, which is not limited by the embodiment of the application.

In some examples, the orthographic projection of the heating structure 20 on the stamping side 11 may coincide with the stamping die 111. In this way, the heating structure 20 can completely cover the area of the imprint mold 111, thereby uniformly and reliably heating the respective areas of the imprint mold 111.

In some embodiments, the stamp 111 may be annularly disposed along the edge of the stamping side 11 such that the stamp 111 is disposed corresponding to each side of the stamping side 11, thereby enabling the stamping of edge seals to each side edge of the target composite film sheet. In some examples, the stamping side 11 may have a regular polygonal profile and the stamping die 111 may have an annular profile with outer sides that coincide with the sides of the regular polygonal profile. In some examples, the orthographic projection of the heating structure 20 on the stamping side 11 may coincide with the stamping die 111; here, the front projection of the heating structure 20 on the stamping side 11 also has an annular contour.

In some embodiments, the stamp 111 may have a plurality of stamp teeth 1111 arranged at intervals in sequence, the extending direction of the stamp teeth 1111 and the edge portion of the stamping side 11 being arranged obliquely. When the embossing 111 embosses the edge portion of the target composite film, the plurality of embossing teeth 1111 are respectively brought into contact with and pressed against the edge portion of the target composite film, so that the edge portion of the target composite film forms the engaging embossments 42 which are matched with the plurality of embossing teeth 1111. Since the extending direction of the embossed teeth 1111 and the edge of the punching side 11 are inclined, the engaging embossments 42 on the edge of the target composite film are distributed in a diagonal manner, and have a more reliable engaging relationship.

In some embodiments, the target composite membrane has a display area and a non-display area surrounding the display area, and the snap emboss 42 may be formed in the non-display area of the target composite membrane. Here, the stamper 111 may be disposed corresponding to the non-display area. When the target composite film is used as an optical film for backlight display, the nip embossing 42 formed by the embossing 111 is located in the non-display area of the target composite film; thus, the light emitted by the backlight source does not pass through the area where the engaging embossment 42 is located, and interference patterns are prevented from being formed on the display picture, so that better display visual effect is ensured.

The width of the imprint mold 111 may be determined according to actual needs, and the embodiment of the present application is not limited thereto. In some embodiments, the width of the stamp 111 may be 0.25 to 0.35mm, such as 0.25mm, 0.28mm, 0.3mm, 0.33mm, 0.35mm, or the like. Here, the width of the stamp 111 may refer to a single-sided width of the stamp 111, i.e., a width of a section of the stamp 111 located near one side of the stamping side 11. In the above width range, on one hand, the edge portion of the target composite membrane can be guaranteed to be tightly engaged with the edge seal, and on the other hand, the engaging embossment 42 can be controlled in a narrower distribution range, so that interference to light emitting display is avoided.

The shape of the die body 10 may be determined according to actual needs, and the embodiment of the present application is not limited thereto. In some embodiments, the die body 10 may be a regular polygonal cylinder such as a triangular cylinder, a quadrangular cylinder, or may be a cylinder such as a right circular cylinder, an elliptical cylinder, or the like. In some examples, the die body 10 is a regular polygonal cylinder, opposite sides of which along the axial direction may form a punching side 11 and a back side 12, respectively. In other examples, the die body 10 is a cylinder, and opposite sides of the cylinder in its axial direction may form the punching side 11 and the back side 12, respectively.

As shown in fig. 1 to 5, on the other hand, the embodiment of the present application provides a film punching device, which includes a carrying table 2, a driving element 3, and a film punching die 1 provided in any of the foregoing embodiments, and may be used to punch a target composite film on a composite film to be punched, and may avoid delamination failure at an edge of the target composite film obtained by punching, so as to ensure that the target film has a film layer structure that is tightly adhered, and improve reliability and molding quality of the target composite film.

The bearing table 2 is used for bearing and mounting the composite die to be punched, and the diaphragm punching die 1 is arranged above the bearing table 2. The driving element 3 is connected to the back side 12 of the diaphragm punch die 1 for driving the diaphragm punch die 1 to move up and down so as to bring the diaphragm punch die 1 close to or away from the carrying table 2. The type of the driving element 3 may be determined according to actual needs, and for example, a linear motor, a driving cylinder, a driving hydraulic cylinder, an electric push rod, etc. may be used, which is not limited in the embodiment of the present application.

Here, when the composite die to be punched needs to be punched, the driving element 3 may drive the film punching die 1 to move downward to approach the composite die to be punched, and the film punching die 1 applies a punching force to a target area on the composite die to be punched to obtain a required target composite film, and the pressing die 111 performs press-fit edge sealing on an edge portion of the target composite film synchronously. And after the punching is completed, the driving element 3 may drive the film punching blade die 1 to move upward away from the carrying table 2 so as to take down the target composite film obtained by punching.

As shown in fig. 6, in a third aspect, an embodiment of the present application provides a composite membrane 4, where the composite membrane 4 includes a plurality of membrane layers 41 that are sequentially stacked. The composite film 4 has a nip embossing 42 provided on the edge portion thereof so that the plurality of film layers 41 are sequentially engaged with each other at the edge portion. Therefore, the layering trend of each film layer 41 at the edge part can be overcome by utilizing the biting force generated by the biting relation, so that each film layer 41 in the composite membrane 4 forms a tightly-attached edge sealing structure at the edge part, the composite membrane is prevented from layering failure at the edge part, and the reliability and the forming quality of the composite membrane are improved. Here, the composite membrane 4 may be obtained by punching by the above-described membrane punching die 1, that is, a target composite membrane obtained by punching a composite membrane to be punched by the membrane punching die 1.

In some embodiments, the composite membrane 4 has a display area and a non-display area surrounding the display area, and the snap emboss 42 may be formed in the non-display area of the composite membrane 4. When the composite film 4 is used as an optical film for backlight display, the engaging embossment 42 is positioned in a non-display area of the composite film 4; thus, the light emitted by the backlight source does not pass through the area where the engaging embossment 42 is located, and interference patterns are prevented from being formed on the display picture, so that better display visual effect is ensured.

The foregoing has described in detail the die and apparatus for die punching and die cutting and the composite film provided by the embodiments of the present application, and specific examples have been employed herein to illustrate the principles and embodiments of the present application, the above examples being provided only to assist in understanding the method and core idea of the present application; meanwhile, as those skilled in the art will have variations in the specific embodiments and application scope in light of the ideas of the present application, the present description should not be construed as limiting the present application.

Claims (10)

1. The die body is provided with a stamping side and a back side which are oppositely arranged, and the stamping side faces towards a composite die sheet to be die-cut so as to die-cut a target composite film sheet on the composite die sheet to be die-cut; and the edge area of the stamping side is provided with a stamping die which is used for stamping and forming a meshing embossing on the edge part of the target composite membrane.

2. The die of claim 1, wherein the die includes a heating structure disposed in correspondence with the stamp to heat the stamp.

3. The diaphragm punch die of claim 2, wherein the heating structure is an electrical heating element disposed within the diaphragm punch die, the electrical heating element and the punch die being in thermally conductive connection; and/or the orthographic projection of the heating structure on the punching side coincides with the punching die.

4. The diaphragm punch die of claim 1, wherein the punch die is annularly disposed along an edge of the punch side.

5. The diaphragm punch die according to claim 1, wherein the punch die has a plurality of punch teeth arranged at intervals in order, and the extending direction of the punch teeth and the edge portion on the punching side are arranged obliquely.

6. The film stamping die of claim 1, wherein the target composite film has a display area and a non-display area surrounding the display area, the stamping die being disposed in correspondence with the non-display area, the snap embossments being formed in the non-display area of the target composite film; and/or the width of the stamping die is 0.25-0.35 mm.

7. The die of claim 1, wherein the die body is a regular polygonal cylinder or a cylinder; when the cutting die body is a regular polygon cylinder, the stamping side and the back side are respectively formed on two opposite sides of the regular polygon cylinder along the axial direction of the regular polygon cylinder; when the cutting die body is a cylinder, the stamping side and the back side are respectively formed on two opposite sides of the cylinder along the axial direction of the cylinder.

8. A die-cutting device for a diaphragm, characterized by comprising a bearing table, a driving element and the diaphragm die-cutting die of any one of claims 1 to 7, wherein the bearing table is used for bearing and mounting a composite diaphragm to be die-cut, and the diaphragm die-cutting die is arranged above the bearing table; the driving element is connected with the back side of the diaphragm punching and cutting die and is used for driving the diaphragm punching and cutting die to move up and down so as to enable the diaphragm punching and cutting die to be close to or far away from the bearing table.

9. The composite membrane is characterized by comprising a plurality of membrane layers which are sequentially laminated; and the edge part of the composite membrane is provided with a meshing embossing so that the plurality of membrane layers are meshed in sequence at the edge part.

10. The composite membrane of claim 9 wherein the composite membrane has a display area and a non-display area surrounding the display area, the bite emboss being formed in the non-display area of the composite membrane.