CN214772557U - Die cutting device for die cutting protective film - Google Patents

Abstract

The application discloses cutting device for cross cutting protection film includes: a frame; the first die cutting unit, the second die cutting unit, the third die cutting unit, the fourth die cutting unit and the fifth die cutting assembly are sequentially arranged on the rack; the first die cutting unit is used for bonding and die-cutting a release film, a first adhesive film and a first original film to form a first pressing die-cutting film piece; the second die cutting unit is used for die cutting the first pressing die-cutting film piece to form a second pressing die-cutting film piece; the third die cutting unit is used for die cutting the second pressing die-cutting film piece to form a third pressing die-cutting film piece; the fourth die cutting unit is used for die cutting the third pressing die-cutting film piece to form a fourth pressing die-cutting film piece; and the fifth die cutting assembly is used for die cutting the fourth pressing die cutting film piece to form a finished protective film. This application carries out pressfitting and cross cutting many times to former membrane through a plurality of cross cutting units, forms the finished product protection film, and manufacturing process is simple, can realize pressfitting and cross cutting operation many times to satisfy the demand of protection film manufacturing process.

Description

Die cutting device for die cutting protective film

Technical Field

The application relates to the technical field of film forming devices, in particular to a die cutting device for die cutting protective films.

Background

Display terminals, for example: mobile phones, tablets and the like require a large amount of protective films to ensure the cleanliness and display effect of the surface of the display terminal. However, as the manufacturing requirements of the mobile terminal on the protective film become higher and higher, the die cutting device in the existing protective film manufacturing process cannot meet the requirements of multiple pressing and die cutting in the protective film production process.

SUMMERY OF THE UTILITY MODEL

In view of the above, there is a need to provide a die cutting device for die cutting a protective film to solve the above problems.

An embodiment of the present application provides a cutting device for cross cutting protection film, the protection film includes first rete and the second rete of range upon range of setting, a cutting device for cross cutting protection film includes:

a frame;

the first die cutting unit, the second die cutting unit, the third die cutting unit, the fourth die cutting unit and the fifth die cutting assembly are sequentially arranged on the rack;

the first die cutting unit is used for bonding and die-cutting a release film, a first adhesive film and a first original film to form a first pressing die-cutting film piece;

the second die cutting unit is used for die cutting the first pressing die-cutting film piece and attaching a second adhesive film to the die-cut second die-cutting film piece so as to form a second pressing die-cutting film piece;

the third die cutting unit is used for die cutting the second pressing die-cutting film piece and removing the release film to form a third pressing die-cutting film piece;

the fourth die cutting unit is used for die cutting the third pressing die-cutting film piece and bonding a third adhesive film and a second original film to form a fourth pressing die-cutting film piece;

the fifth die cutting assembly is used for attaching and die-cutting a fourth adhesive film and the fourth pressing die-cutting film piece to form a finished protective film;

the second adhesive film is used for bonding waste materials generated in die cutting of the first die-cut film piece so as to obtain a second pressing film piece;

the third adhesive film is used for bonding waste materials generated in die cutting of the third die-cut film piece so as to obtain the first film layer;

the fourth adhesive film is used for bonding waste materials generated in the die cutting of the fifth die-cutting assembly so as to obtain the second film layer.

In an embodiment, the first die cutting unit includes:

the first laminating assembly is used for laminating a release film and a first adhesive film to form a first laminating film piece;

and the first die cutting assembly is arranged between the first pressing assembly and the second die cutting unit and used for attaching the first original film and the first pressing film piece and die-cutting the first original film frame to form the first pressing die-cutting film piece.

In one embodiment, the second die cutting unit comprises a second die cutting assembly and a second pressing assembly, the second die cutting assembly is arranged between the first die cutting assembly and the second pressing assembly and is used for die cutting the inner frame of the first original film in the first die cutting assembly to form a second die cutting film piece; the second pressing assembly is arranged between the second die cutting assembly and the third die cutting unit and used for attaching the second adhesive film and the second die cutting film piece to form the second pressing die cutting film piece.

In one embodiment, the third die cutting unit comprises a third pressing component and a third die cutting component, and the third pressing component is arranged between the second pressing component and the third die cutting component to form a third pressing film; the third die cutting assembly is arranged between the second pressing assembly and the fourth die cutting unit and used for die cutting the third pressing film piece to form a third pressing die cutting film piece.

In one embodiment, the fourth die cutting unit includes a fourth die cutting assembly for die cutting the third die-cut film member and adhering the third adhesive film to form a fourth die-cut film member and a fourth pressing assembly; and the fourth pressing assembly is used for attaching the second original film to the fourth die-cutting film piece so as to form a fourth pressing die-cutting film piece.

In one embodiment, the die cutting device for die cutting the protective film further includes:

the release film feeding roller is arranged on one side of the first pressing assembly and used for conveying the release film to the first pressing assembly;

and the protective film collecting roller is arranged on one side of the fifth die cutting assembly and is used for collecting the finished protective film.

In one embodiment, the die cutting device for die cutting the protective film further includes:

the first mucosa feeding roller is arranged on one side of the first pressing component and used for conveying the first mucosa to the first pressing component;

the first mucosa waste roller is arranged on one side of the first pressing component and used for gathering the waste of the first mucosa from the first pressing component;

the second adhesive film feeding roller is arranged above the second die cutting assembly and used for conveying the second adhesive film to the second pressing assembly;

the second mucosa waste roller is arranged above the second die cutting assembly and used for gathering the waste of the second mucosa from the second pressing assembly;

the fourth adhesive film feeding roller is arranged on one side of the fifth die-cutting assembly and used for conveying the fourth adhesive film to the fifth die-cutting assembly;

and the fourth mucosa waste roller is arranged below the fourth pressing component and used for gathering the fourth mucosa waste from the fifth die cutting component.

In one embodiment, the die cutting device for die cutting the protective film further includes:

the first original film feeding roller is arranged above the first pressing component and used for conveying the first original film to the first die cutting component;

the first raw film waste roller is arranged above the first die cutting assembly and used for gathering the waste of the first raw film from the first die cutting assembly.

In one embodiment, the die cutting device for die cutting the protective film further includes:

the second original film feeding roller is arranged above the fourth die cutting assembly and used for conveying the second original film to the fourth die cutting assembly;

and the second raw film waste roller is arranged above the fifth die cutting assembly and used for gathering the waste of the second raw film from the fourth die cutting assembly.

In one embodiment, the die cutting device for die cutting the protective film further includes:

and the deviation corrector is arranged between the first mucosa feeding roller and the first pressing component and used for guiding the first mucosa to enter the first pressing component along a preset direction.

The die cutting device for die cutting the protective film performs multiple times of pressing and die cutting on the original film through the first die cutting unit, the second die cutting unit, the third die cutting unit, the fourth die cutting unit and the fifth die cutting assembly, and wastes generated in the die cutting process of each die cutting unit are taken out through the plurality of adhesive films, so that the finished protective film is finally formed. Compared with the prior art, the die cutting device is simple in manufacturing process and can realize multiple pressing and die cutting operations so as to meet the requirements of a finished product protective film manufacturing process.

Drawings

Fig. 1 is a schematic plan view of a die cutting device for die cutting a protective film according to an embodiment of the present application.

Fig. 2 is an enlarged schematic plan view of region ii in fig. 1.

Fig. 3 is a schematic cross-sectional view of a first press-fit film member according to an embodiment of the present disclosure.

Fig. 4 is a schematic cross-sectional view of a first compression die-cut film member according to an embodiment of the present application.

Fig. 5 is a schematic cross-sectional view of a second compression-die-cut film member according to an embodiment of the present application.

Fig. 6 is a schematic cross-sectional view of a third press-die cut film member according to an embodiment of the present application.

Fig. 7 is a schematic cross-sectional view of a fourth compression-die-cut film member according to an embodiment of the present application.

Description of the main elements

Die cutting device 10 for die cutting protective film

Finished protective film 102

Rack 110

First die cutting unit 120

First press-fit die-cut film member 1210

First press-fit membrane 1212

First pressing component 1220

First die cut component 1230

Second die cutting unit 130

Second press-fit die-cut film 1310

Second die cut film 1312

Second pressing assembly 1320

Second die cut assembly 1330

Third die cutting unit 140

Third press-fit die-cut film 1410

Third press-fit membrane 1412

Third lamination assembly 1420

Third die cut assembly 1430

Fourth die cutting unit 150

Fourth compression die cut film 1510

Fourth die cut film 1512

Fourth compression assembly 1520

Fourth die cut assembly 1530

Fifth die cut component 160

Release film 170

First mucosa 180

First original film 190

Second mucosa 200

Second original film 220

Fourth mucosa 230

Release film feeding roller 240

Protective film collecting roller 250

First mucosal feeding roller 260

First mucosal waste roll 270

Second mucosal feeding roller 280

Second mucosal waste roll 290

Fourth mucosal feeding roller 300

Fourth mucosal waste roll 310

First raw film feeding roller 320

First raw film waste roll 330

Second raw film feeding roller 340

Second raw film waste roll 350

Deviation rectifier 360

Release adhesive film 370

Release adhesive film feeding roller 380

From type mucosa waste roller 390

Detailed Description

Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative and are only for the purpose of explaining the present application and are not to be construed as limiting the present application.

In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the application and for simplicity in description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and thus should not be considered limiting. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise contact of the first and second features not directly but through another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly above and obliquely above the second feature, or simply meaning that the first feature is at a lesser level than the second feature.

The following disclosure provides many different embodiments or examples for implementing different features of the application. In order to simplify the disclosure of the present application, specific example components and arrangements are described below. Of course, they are merely examples and are not intended to limit the present application. Moreover, the present application may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, examples of various specific processes and materials are provided herein, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials.

Referring to fig. 1 and fig. 2, an embodiment of the present application provides a die-cutting device 10 for die-cutting a protective film, in which a finished protective film 102 includes a first film layer and a second film layer which are stacked, the die-cutting device 10 for die-cutting a protective film includes a frame 110, and a first die-cutting unit 120, a second die-cutting unit 130, a third die-cutting unit 140, a fourth die-cutting unit 150, and a fifth die-cutting assembly 160 which are sequentially disposed on the frame 110 from left to right along a horizontal direction.

The first die cutting unit 120 is used for laminating and die cutting a release film 170, a first adhesive film 180 and a first original film 190 to form a first pressing die-cutting film member 1210; the second die cutting unit 130 is used for die cutting the first pressing die-cutting film 1210 and attaching a second adhesive film 200 and the die-cut second die-cutting film 1312 to form a second pressing die-cutting film 1310; the third die-cutting unit 140 is used for die-cutting the second die-cut film piece 1312 and removing the release film 170 to form a third press-fit die-cut film piece 1410; the fourth die-cutting unit 150 is used for die-cutting the third press-fit die-cut film 1410 and adhering a third adhesive film (not shown) and a second original film 220 to form a fourth press-fit die-cut film 1510; the fifth die-cutting assembly 160 laminates and die-cuts a fourth adhesive film 230 and a fourth laminated die-cut film 1510 to form the finished protective film 102.

The second adhesive film 200 is used to adhere waste materials generated during the die cutting of the first compression die-cut film 1210 to obtain a second compression die-cut film 1310; the third adhesive film is used for bonding waste generated in the die cutting of the third press-fit die-cut film piece 1410 to obtain a first film layer; the fourth adhesive film 230 is used to adhere waste generated in the die cutting of the fifth die-cut assembly 160 to obtain a second film layer.

The die cutting device 10 for die cutting the protective film is pressed and die cut for multiple times through the first die cutting unit 120, the second die cutting unit 130, the third die cutting unit 140, the fourth die cutting unit 150 and the fifth die cutting assembly 160, and wastes generated in the die cutting process of each die cutting unit are taken out through multiple adhesive films, so that the finished protective film 102 is finally formed. Compared with the prior art, the die cutting device 10 for die cutting of the protective film has a simple manufacturing process, and can realize multiple pressing and die cutting operations, so as to meet the requirements of the manufacturing process of the finished protective film 102.

In one embodiment, the first die cutting unit 120 includes a first pressing assembly 1220 and a second pressing assembly 1320. The first pressing assembly 1220 is used for attaching a release film 170 to a first adhesive film 180 to form a first pressing film 1212; the first die-cutting assembly 1230 is disposed between the first pressing assembly 1220 and the second die-cutting unit 130, and is configured to attach the first original film 190 to the first pressing film 1212 and to die-cut the border of the first original film 190, and the first adhesive film 180 attaches and drives the border waste of the first original film 190 to form the first pressing die-cutting film 1210.

The first adhesive film 180 is a release film with a single layer, and has a thickness of 0.05mm ± 0.01mm, and the first original film 190 is an original film made of thermoplastic polyester or saturated polyester, and has a thickness of 0.025mm ± 0.005 mm.

In one embodiment, the second die cutting unit 130 includes a second die cutting assembly 1330 and a second pressing assembly 1320, the second die cutting assembly 1330 is disposed between the first die cutting assembly 1230 and the second pressing assembly 1320 for die cutting the inner frame of the first original film 190 in the first die cutting assembly 1230 to form a second die cutting film 1312; the second pressing assembly 1320 is disposed between the second die-cutting assembly 1330 and the third die-cutting unit 140 for adhering the second adhesive film 200 and the second die-cutting film 1312, and taking away the middle frame waste of the first original film 190 through the second adhesive film 200 to form the second pressing die-cutting film 1310.

In one embodiment, the third die cutting unit 140 includes a third pressing assembly 1420 and a third die cutting assembly 1430, the third pressing assembly 1420 is disposed between the second pressing assembly 1320 and the third die cutting assembly 1430 for removing the release film 170 in the second pressing die-cut film 1310 to form a third pressing film 1412; the third die-cutting assembly 1430 is disposed between the second pressing assembly 1320 and the fourth die-cutting unit 150 for die-cutting the third pressing film member 1412 to form the third pressing die-cutting film member 1410. A release film feeding roller 380 is further disposed above the third pressing assembly 1420 for conveying the release film 370 and the third pressing film 1412 into the third die cutting assembly 1430, and a release film waste roller 390 is disposed above the third die cutting assembly 1430 for removing the release film 170 cut by the third die cutting assembly 1430.

In one embodiment, the fourth die-cutting unit 150 includes a fourth die-cutting assembly 1530 and a fourth pressing assembly 1520, the fourth die-cutting assembly 1530 is used for die-cutting the third pressing die-cutting film 1410, and adhering the waste material generated by the third pressing die-cutting film 1410 through the third adhesive film to form a fourth die-cutting film 1512; the fourth pressing assembly 1520 is used to attach the second raw film 220 to the fourth die-cut film member 1512 to form the fourth pressing die-cut film member 1510.

In one embodiment, the die cutting device 10 for die cutting the protective film further includes a release film feeding roller 240 and a protective film collecting roller 250. The release film feeding roller 240 is arranged on the left side of the first pressing assembly 1220 and used for conveying the release film 170 to the first pressing assembly 1220; and a protective film collecting roller 250 disposed at one side of the fifth die-cutting assembly 160 for collecting the finished protective film 102.

In one embodiment, the die cutting device 10 for die cutting a protective film further includes:

the first mucosa feeding roller 260 is arranged at the left side of the first pressing component 1220 and used for conveying the first mucosa to the first pressing component 1220;

the first mucosa waste roller 270 is arranged on the left side of the first pressing component 1220 and above the first mucosa feeding roller, and is used for collecting the first mucosa waste from the first pressing component 1220, wherein the first mucosa waste refers to the waste in the first pressing component 1220 to which the first mucosa is adhered;

a second adhesive film feeding roller 280 disposed above the second die cutting assembly 1330 for feeding the second adhesive film 200 to the second pressing assembly 1320;

a second adhesive film waste roller 290, disposed above the second die-cutting assembly 1330, for collecting the waste material of the second adhesive film 200 from the second pressing assembly 1320, wherein the waste material of the second adhesive film 200 refers to the waste material generated in the die-cutting process of the second die-cutting assembly 1330 to which the second adhesive film 200 is adhered;

a fourth adhesive film feeding roller 300 disposed at the right side of the fifth die-cutting assembly 160 for feeding the fourth adhesive film 230 to the fifth die-cutting assembly 160;

the fourth adhesive film waste roller 310 is disposed below the fourth pressing assembly 1520 and is used for collecting the waste of the fourth adhesive film 230 from the fifth die-cutting assembly 160, wherein the waste of the fourth adhesive film 230 refers to the waste generated in the die-cutting process of the fifth die-cutting assembly 160 to which the fourth adhesive film 230 is adhered.

In one embodiment, the die cutting device 10 for die cutting the protective film further includes a first raw film feeding roller and a first raw film waste roller. The first original film feeding roller is arranged above the first pressing component 1220 and used for conveying a first original film to the first die cutting component 1230; the first raw film waste roller is disposed above the first die cutting assembly 1230, and is used for collecting the waste of the first raw film from the first die cutting assembly 1230.

In one embodiment, the die cutting device 10 for die cutting the protective film further includes a second raw film feeding roller 340 and a second raw film waste roller 350. The second original film feeding roller 340 is disposed above the fourth die cutting assembly 1530, and is configured to convey the second original film 220 to the fourth die cutting assembly 1530; the second raw film waste roll 350 is disposed above the fifth die-cutting assembly 160, and collects the waste of the second raw film 220 from the fourth die-cutting assembly 1530.

In an embodiment, the die cutting device 10 for die cutting the protective film further includes a deviation corrector 360, and the deviation corrector 360 is disposed between the first adhesive film feeding roller 260 and the first pressing assembly 1220 and is used for guiding the first adhesive film 180 to enter the first pressing assembly 1220 along a preset direction.

Referring to fig. 1 to 7, the operation of the die cutting device 10 for die cutting a protective film is as follows:

the first adhesive film 180 is conveyed to the first pressing component 1220 by the first adhesive film feeding roller 260 through the deviation rectifier 360, the first adhesive film 180 and the release film 170 simultaneously enter the first pressing component 1220, and are pressed by the first pressing component 1220 to form a first pressing film piece 1212 as shown in fig. 3, and in the process, the first adhesive film 180 takes away waste materials stuck on the first adhesive film 180 through the first adhesive film waste roller 270; the first laminating film assembly 1212 is transported to the first die-cutting assembly 1230, the first original film 190 is transported to the first die-cutting assembly 1230 by the first original film feeding roller 320, the first laminating assembly 1220 and the first original film 190 are simultaneously transported to the first die-cutting assembly 1230, the first laminating film assembly 1210 shown in fig. 4 is formed by die-cutting by the first die-cutting assembly 1230, and the waste material of the first original film 190 is discharged by the first original film waste roller 330.

Then, the first pressing die-cutting film 1210 is continuously conveyed to the second die-cutting assembly 1330, the second die-cutting film 1312 is formed by die-cutting the second die-cutting assembly 1330, the second die-cutting film 1312 is continuously conveyed to the second pressing assembly 1320, the second adhesive film 200 is conveyed to contact with the first pressing die-cutting film 1210 by the second adhesive film feeding roller 280 so as to stick the inner frame waste of the first original film 190 generated in the die-cutting process of the first die-cutting assembly 1230, and is discharged by the second adhesive film waste roller 290, the second die-cutting film 1312 from which the inner frame waste of the first original film 190 is discharged is conveyed to the second pressing assembly 1320, and is pressed by the second pressing assembly 1320 to form the second pressing die-cutting film 1310 as shown in fig. 5.

Then, the second pressing die-cut film 1310 is conveyed to the third pressing module 1420, a third pressing film 1412 is formed by the pressing action of the third pressing module 1420, the third pressing film 1412 is conveyed to the third die-cutting module 1430, the release film 370 is conveyed to the third pressing film 1412 by the release film feeding roller 380, and enters the third die-cutting module 1430 together with the third pressing film 1412, the third pressing die-cut film 1410 as shown in fig. 6 is formed by the die-cutting of the third die-cutting module 1430, and the release film 170 molded by the third die-cutting module 1430 is discharged by the release film 370 through the release film waste roller 390.

Then, the third pressing die-cutting film 1410 is continuously conveyed to the fourth die-cutting assembly 1530, the fourth die-cutting film 1512 is formed by die-cutting of the fourth die-cutting assembly 1530, the fourth die-cutting film 1512 is conveyed to the fourth pressing assembly 1520, the second original film 220 is conveyed to the fourth pressing assembly 1520 by the second original film feeding roller 340, the fourth die-cutting film 1512 and the second original film 220 are simultaneously conveyed to the fourth pressing assembly 1520, the fourth pressing die-cutting film 1510 shown in fig. 7 is formed by pressing of the fourth pressing assembly 1520, and the waste material of the second original film 220 is discharged by the second original film waste roller 350.

Then, the fourth press-fit die-cutting film 1510 is continuously conveyed to the fifth die-cutting assembly 160, the fourth adhesive film 230 is conveyed to the fifth die-cutting assembly 160 through the fourth adhesive film feeding roller 300, the fourth press-fit die-cutting film 1510 and the fourth adhesive film 230 are simultaneously conveyed to the fifth die-cutting assembly 160, the finished protective film 102 is formed through die cutting of the fifth die-cutting assembly 160, and the fourth adhesive film 230 discharges waste materials in the adhered fifth die-cutting assembly 160 through the fourth adhesive film waste roller 310.

It will be evident to those skilled in the art that the present application is not limited to the details of the foregoing illustrative embodiments, and that the present application may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the application being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present application and not for limiting, and although the present application is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made on the technical solutions of the present application without departing from the spirit and scope of the technical solutions of the present application.

Claims (10)

1. The die cutting device for die cutting of protective films is characterized in that the protective films comprise a first film layer and a second film layer which are arranged in a stacked mode, and the die cutting device for die cutting of the protective films comprises:

a frame;

the first die cutting unit, the second die cutting unit, the third die cutting unit, the fourth die cutting unit and the fifth die cutting assembly are sequentially arranged on the rack;

the first die cutting unit is used for bonding and die-cutting a release film, a first adhesive film and a first original film to form a first pressing die-cutting film piece;

the second die cutting unit is used for die cutting the first pressing die-cutting film piece and attaching a second adhesive film to the die-cut second die-cutting film piece so as to form a second pressing die-cutting film piece;

the third die cutting unit is used for die cutting the second pressing die-cutting film piece and removing the release film to form a third pressing die-cutting film piece;

the fourth die cutting unit is used for die cutting the third pressing die-cutting film piece and bonding a third adhesive film and a second original film to form a fourth pressing die-cutting film piece;

the fifth die cutting assembly is used for attaching and die-cutting a fourth adhesive film and the fourth pressing die-cutting film piece to form a finished protective film;

the second adhesive film is used for bonding waste materials generated in die cutting of the first pressing die-cutting film piece so as to obtain a second pressing film piece;

the third adhesive film is used for bonding waste materials generated in die cutting of the third pressing die-cutting film piece so as to obtain the first film layer;

the fourth adhesive film is used for bonding waste materials generated in the die cutting of the fifth die-cutting assembly so as to obtain the second film layer.

2. The die-cutting device for die-cutting a protective film according to claim 1, wherein the first die-cutting unit includes:

the first laminating assembly is used for laminating a release film and a first adhesive film to form a first laminating film piece;

and the first die cutting assembly is arranged between the first pressing assembly and the second die cutting unit and used for attaching the first original film and the first pressing film piece and die-cutting the first original film frame to form the first pressing die-cutting film piece.

3. The die-cutting device for die-cutting protective films according to claim 2, wherein the second die-cutting unit comprises a second die-cutting assembly and a second pressing assembly, the second die-cutting assembly is arranged between the first die-cutting assembly and the second pressing assembly and is used for die-cutting the inner frame of the first original film in the first die-cutting assembly to form a second die-cutting film;

the second pressing assembly is arranged between the second die cutting assembly and the third die cutting unit and used for attaching the second adhesive film and the second die cutting film piece to form the second pressing die cutting film piece.

4. The die cutting device for die cutting protective films according to claim 3, wherein the third die cutting unit includes a third pressing assembly and a third die cutting assembly, the third pressing assembly is disposed between the second pressing assembly and the third die cutting assembly to form a third pressed film;

the third die cutting assembly is arranged between the second pressing assembly and the fourth die cutting unit and used for die cutting the third pressing film piece to form a third pressing die cutting film piece.

5. The die-cutting device for die-cutting protective films according to claim 4, wherein the fourth die-cutting unit includes a fourth die-cutting module for die-cutting the third die-cutting film member and adhering the third adhesive film to form a fourth die-cutting film member and a fourth pressing module;

and the fourth pressing assembly is used for attaching the second original film to the fourth die-cutting film piece so as to form a fourth pressing die-cutting film piece.

6. The die-cutting device for die-cutting a protective film according to claim 5, wherein the die-cutting device for die-cutting a protective film further comprises:

the release film feeding roller is arranged on one side of the first pressing assembly and used for conveying the release film to the first pressing assembly;

and the protective film collecting roller is arranged on one side of the fifth die cutting assembly and is used for collecting the finished protective film.

7. The die-cutting device for die-cutting a protective film according to claim 5, wherein the die-cutting device for die-cutting a protective film further comprises:

the first mucosa feeding roller is arranged on one side of the first pressing component and used for conveying the first mucosa to the first pressing component;

the first mucosa waste roller is arranged on one side of the first pressing component and used for gathering the waste of the first mucosa from the first pressing component;

the second adhesive film feeding roller is arranged above the second die cutting assembly and used for conveying the second adhesive film to the second pressing assembly;

the second mucosa waste roller is arranged above the second die cutting assembly and used for gathering the waste of the second mucosa from the second pressing assembly;

the fourth adhesive film feeding roller is arranged on one side of the fifth die-cutting assembly and used for conveying the fourth adhesive film to the fifth die-cutting assembly;

and the fourth mucosa waste roller is arranged below the fourth pressing component and used for gathering the fourth mucosa waste from the fifth die cutting component.

8. The die-cutting device for die-cutting a protective film according to claim 5, wherein the die-cutting device for die-cutting a protective film further comprises:

the first original film feeding roller is arranged above the first pressing component and used for conveying the first original film to the first die cutting component;

the first raw film waste roller is arranged above the first die cutting assembly and used for gathering the waste of the first raw film from the first die cutting assembly.

9. The die-cutting device for die-cutting a protective film according to claim 5, wherein the die-cutting device for die-cutting a protective film further comprises:

the second original film feeding roller is arranged above the fourth die cutting assembly and used for conveying the second original film to the fourth die cutting assembly;

and the second raw film waste roller is arranged above the fifth die cutting assembly and used for gathering the waste of the second raw film from the fourth die cutting assembly.

10. The die cutting device for die cutting a protective film according to claim 7, wherein the die cutting device for die cutting a protective film further comprises:

and the deviation corrector is arranged between the first mucosa feeding roller and the first pressing component and used for guiding the first mucosa to enter the first pressing component along a preset direction.

Images