Film tearing mechanism and film pasting device

Abstract

The application discloses a film tearing mechanism and a film pasting device. The film tearing mechanism comprises a clamping assembly, a rotating driving assembly and a translation driving assembly. The clamping assembly has a clamping part for clamping a film tearing part of a protective film. The rotating driving assembly is drivingly connected with the clamping assembly. The clamping assembly is driven by the rotating driving assembly to rotate the film tearing part relative to a body of a film piece. The translation driving assembly is drivingly connected with the rotating driving assembly. The driving direction of the translation driving assembly is parallel to the plane of the film piece, so that the film pasting efficiency is improved.

Description

Technical Field

[0001] This application belongs to the field of film application technology, specifically relating to a film peeling mechanism and a film application device. Background Technology

[0002] In the manufacturing process of electronic products such as mobile phones, tablets, and watches, diaphragms (such as film films) need to be attached to the products. These diaphragms usually have a protective film to ensure they are not contaminated or damaged during transportation and storage. Before attaching the film to the product, the protective film on the diaphragm needs to be removed.

[0003] Because the diaphragm and protective film are adhered together with adhesive, and the adhesion is quite strong, existing film application devices typically clamp the tear-off section at the corner of the protective film and then peel it off directly perpendicular to the surface of the diaphragm. However, when the adhesion force holding the diaphragm in place is insufficient, the diaphragm and protective film can easily fall off together, meaning the diaphragm is torn off along with the protective film, thus reducing application efficiency. Utility Model Content

[0004] In view of the above-mentioned defects or deficiencies, this application provides a film-peeling mechanism and a film-applying device, which aims to solve the technical problem that existing film-applying devices easily peel off the film along with the protective film, reducing the film-applying efficiency.

[0005] To achieve the above objectives, this application provides a film-tearing mechanism, which includes a clamping assembly, a rotation drive assembly, and a translation drive assembly. The clamping assembly has a clamping portion that clamps the film-tearing portion of the protective film; the rotation drive assembly is driven to the clamping assembly, and the clamping assembly rotates the film-tearing portion relative to the body of the film piece under the drive of the rotation drive assembly; the translation drive assembly is driven to the rotation drive assembly, and the driving direction of the translation drive assembly is parallel to the plane of the film piece.

[0006] In this embodiment, the rotation drive assembly includes a rotation motor and a connecting frame, and the clamping assembly is disposed on the connecting frame, with the opening direction of the clamping part along the radial direction of the output shaft of the rotation motor.

[0007] In this embodiment of the application, the connecting frame includes a first connecting rod and a second connecting rod connected to each other. One end of the first connecting rod is driven and connected to a rotary motor and extends radially along the rotation axis of the rotary motor. The second connecting rod is connected to the other end of the first connecting rod and extends axially along the rotation axis of the rotary motor. The clamping assembly is connected to the end of the second connecting rod away from the first connecting rod.

[0008] In this embodiment of the application, the translation drive assembly includes a film tearing corner drive and a moving drive. The film tearing corner drive is driven to the rotation drive assembly. The driving direction of the film tearing corner drive is set from the corner of the film to the middle of the film. The moving drive is driven to the film tearing corner drive. The driving direction of the moving drive is set to be parallel to the length direction of the film.

[0009] In addition, this application also provides a film application device, including the film tearing mechanism as described above, and a film application mechanism that is lifted and disposed on the film tearing mechanism. The film application mechanism includes a fixing member, a film piece fixedly disposed on the fixing member, and a film tearing part extending out of the fixing member.

[0010] In this embodiment, the film-applying mechanism includes a pressing component, which is spaced apart from the fixing component along the length of the film piece. The pressing component is provided with a film-applying roller for pressing down the film piece.

[0011] In this embodiment, the film application mechanism further includes a film application bracket, a suction plate translation drive component disposed on the film application bracket, and a translation frame driven and connected to the suction plate translation drive component. The film application bracket can be raised and lowered. The pressing component and the fixing component are sequentially disposed on the film application bracket along the length direction of the film piece. The fixing component includes a large suction plate and a small suction plate sequentially disposed along the length direction of the film piece. The large suction plate is fixedly disposed on the film application bracket. The opposite ends of the small suction plate are respectively connected to the translation frame. The pressing component is disposed on the film application bracket and on the same side as the small suction plate. The film application roller can extend into the translation frame.

[0012] In this embodiment of the application, the film application device further includes a film feeding platform and a film loading platform to be applied. The film feeding platform and the film loading platform to be applied are respectively driven by the translation drive component, and both can pass under the film application mechanism under the drive of the translation drive component.

[0013] In this embodiment of the application, a diaphragm component positioning assembly is provided on the diaphragm feeding platform.

[0014] In this embodiment, the film application device includes at least two film application stations arranged sequentially, and each film application station is equipped with a film peeling mechanism and a film application mechanism.

[0015] Through the above technical solution, the film-tearing mechanism provided in this application embodiment has the following beneficial effects: In the technical solution of this application, the protective film of the diaphragm has a tear-off portion, and the clamping assembly has a clamping portion capable of clamping the tear-off portion. A rotation drive assembly is driven to the clamping assembly, and the rotation drive assembly can drive the clamping assembly to rotate. When the clamping portion of the clamping assembly clamps the tear-off portion, the rotation drive assembly drives the clamping assembly to rotate. Under the drive of the rotation drive assembly, the clamping assembly causes the tear-off portion to rotate relative to the body of the diaphragm, causing the tear-off portion to fold downwards, so that the clamping assembly moves to below the diaphragm to avoid interference between the clamping assembly and the body of the diaphragm, facilitating subsequent tearing. Then, a translation drive assembly drives the rotation drive assembly to move in a direction parallel to the plane of the diaphragm, and the rotation drive assembly drives the clamping assembly to move in a direction parallel to the plane of the diaphragm, thereby peeling the protective film from the body of the diaphragm. The force peeling the protective film has no vertical component, so the body of the diaphragm is not easily torn off with the protective film, thereby improving the film application efficiency.

[0016] Other features and advantages of the embodiments of this application will be described in detail in the following detailed description section. Attached Figure Description

[0017] The accompanying drawings are provided to further illustrate the embodiments of this application and form part of the specification. They are used together with the following detailed description to explain the embodiments of this application, but do not constitute a limitation on the embodiments of this application. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without any inventive effort. In the drawings: Figure 1 This is a schematic diagram of the structure of a film-tearing mechanism according to an embodiment of this application; Figure 2 This is a schematic diagram of the structure of a film-applying device according to an embodiment of this application; Figure 3 This is a schematic diagram of the structure of a diaphragm element according to an embodiment of this application; Figure 4 This is a schematic diagram of the film-tearing state of a diaphragm element according to an embodiment of this application; Figure 5 This is a schematic diagram of the translation drive assembly in a film application device according to an embodiment of this application; Figure 6 yes Figure 5 A magnified view of a portion of point A in the middle; Figure 7 This is a schematic diagram of the film-applying mechanism in a film-applying device according to an embodiment of this application; Figure 8 This is a schematic diagram of the structure of a film-applying device according to another embodiment of this application.

[0018] Explanation of reference numerals in the attached figures Detailed Implementation

[0019] The specific embodiments of this application will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit this application.

[0020] The descriptions of directions such as "up", "down", "front", "back", "left", and "right" in this application are as follows: Figure 1 The directions shown are for reference only and are used to interpret the location. Figure 1 The relative positional relationship between the components in the shown posture is such that if the specific posture changes, the directional indication will also change accordingly.

[0021] The film-peeling mechanism 20 and the film-applying device of this application are described below with reference to the accompanying drawings.

[0022] like Figures 1 to 8 As shown, this application provides a film-tearing mechanism 20, which includes a clamping assembly 21, a rotation drive assembly 22, and a translation drive assembly 23. The clamping assembly 21 has a clamping portion 214 for clamping the film-tearing portion 2011 of the protective film 201; the rotation drive assembly 22 is driven to the clamping assembly 21, and the clamping assembly 21 causes the film-tearing portion 2011 to rotate relative to the body 202 of the film piece 200 under the drive of the rotation drive assembly 22; the translation drive assembly 23 is driven to the rotation drive assembly 22, and the driving direction of the translation drive assembly 23 is parallel to the plane of the film piece 200.

[0023] The protective film 201 of the diaphragm member 200 has a tear-off portion 2011, and the clamping assembly 21 has a clamping portion 214 capable of clamping the tear-off portion 2011. A rotation drive assembly 22 is driven to the clamping assembly 21, and the rotation drive assembly 22 can drive the clamping assembly 21 to rotate. When the clamping portion 214 of the clamping assembly 21 clamps the tear-off portion 2011, the rotation drive assembly 22 drives the clamping assembly 21 to rotate. Under the drive of the rotation drive assembly 22, the clamping assembly 21 causes the tear-off portion 2011 to rotate relative to the body 202 of the diaphragm member 200, causing the tear-off portion 2011 to fold downwards, so that the clamping assembly 21 moves to below the diaphragm member 200 to avoid interference between the clamping assembly 21 and the body 202 of the diaphragm member 200, thus facilitating subsequent tear-off operations. Then, the translation drive assembly 23 drives the rotation drive assembly 22 to move in a direction parallel to the plane of the diaphragm 200. The rotation drive assembly 22 drives the clamping assembly 21 to move in a direction parallel to the plane of the diaphragm 200, thereby peeling the protective film 201 off the body 202 of the diaphragm 200. The force of peeling off the protective film 201 has no component in the vertical direction, so the body 202 of the diaphragm 200 is not easily torn off with the protective film 201, thereby improving the film application efficiency.

[0024] In the embodiments of this application, please refer to Figure 1 , Figure 2 The rotation drive assembly 22 includes a rotation motor 221 and a connecting frame 222. The clamping assembly 21 is disposed on the connecting frame 222, and the opening direction of the clamping part 214 is along the radial direction of the output shaft of the rotation motor 221.

[0025] A rotary motor 221 serves as the power source. The output shaft of the rotary motor 221 is connected to a connecting frame 222. A clamping assembly 21 is provided on the connecting frame 222. The rotary motor 221 drives the connecting frame 222 to rotate, and the rotation of the connecting frame 222 drives the clamping assembly 21 to rotate, thereby enabling the clamping assembly 21 to fold the film-tearing part 2011 downward. The opening direction of the clamping part 214 is along the radial direction of the output shaft of the rotary motor 221. Furthermore, the clamping assembly 21 is configured to rotate around the opening of the clamping part 214 as its rotation center under the drive of the rotary drive assembly 22. The output shaft of the rotary motor 221 and the rotation axis of the clamping assembly 21 are collinear, so that when the rotary drive assembly 22 drives the clamping assembly 21 to rotate, no component force is generated along the axial direction of the output shaft, thereby preventing the body 202 of the diaphragm piece 200 from bending when the clamping assembly 21 rotates.

[0026] Specifically, rotating the motor 221 can cause the clamping assembly 21 to fold downwards by 30° or 45°.

[0027] In the embodiments of this application, please refer to Figure 1 The connecting frame 222 includes a first connecting rod 2221 and a second connecting rod 2222 connected to each other. One end of the first connecting rod 2221 is driven connected to the rotating motor 221 and extends radially along the rotating shaft of the rotating motor 221. The second connecting rod 2222 is connected to the other end of the first connecting rod 2221 and extends axially along the rotating shaft of the rotating motor 221. The clamping assembly 21 is connected to the end of the second connecting rod 2222 away from the first connecting rod 2221.

[0028] The first connecting rod 2221 extends radially along the rotation shaft of the rotary motor 221, and its rear end is drivenly connected to the rotary motor 221. Specifically, the rear end of the first connecting rod 2221 is sleeved outside the rotation shaft of the rotary motor 221. The second connecting rod 2222 extends axially along the rotation shaft of the rotary motor 221, its left end is connected to the front end of the first connecting rod 2221, and its right end is connected to the clamping assembly 21. The rotation of the rotation shaft of the rotary motor 221 drives the first connecting rod 2221 to rotate, which in turn drives the second connecting rod 2222 to rotate, which in turn drives the clamping assembly 21 to rotate. By setting the first connecting rod 2221 and the second connecting rod 2222, the rotation axis of the rotation shaft of the rotary motor 221 passes through the clamping part 214 of the clamping assembly 21.

[0029] In the embodiments of this application, please refer to Figure 2 and Figure 5 The translation drive assembly 23 includes a film tearing corner drive 231 and a moving drive 232. The film tearing corner drive 231 is driven to the rotation drive assembly 22. The driving direction of the film tearing corner drive 231 is set from the corner of the film piece 200 to the middle of the film piece 200. The moving drive 232 is driven to the film tearing corner drive 231. The driving direction of the moving drive 232 is set to be parallel to the length direction of the film piece 200.

[0030] The film tearing angle drive 231 is connected to the rotation drive assembly 22. The film tearing angle drive 231 can drive the rotation drive assembly 22 to move from the corner of the diaphragm 200 towards the center of the diaphragm 200, making the film tearing action smoother and more efficient, while reducing damage to the diaphragm. Specifically, the film tearing angle drive 231 can be a cylinder, which has the advantages of stable and reliable output.

[0031] With the clamping portion 214 of the clamping assembly 21 clamping the tear-off portion 2011, the rotation drive assembly 22 drives the clamping assembly 21 to rotate, causing the tear-off portion 2011 to fold downwards, so that the clamping assembly 21 moves to below the diaphragm piece 200. Then, the tear-off angle drive member 231 drives the rotation drive assembly 22 to move from the corner of the diaphragm piece 200 towards the center of the diaphragm piece 200, so that the clamping assembly 21 moves the tear-off portion 2011 to peel off a portion of the protective film 201, reducing the force required for initial peeling and reducing the risk of residual adhesive. Specifically, the tear-off angle drive member 231 can drive the clamping assembly 21 to peel off about one-third of the protective film 201, wherein the angle between the driving direction of the tear-off angle drive member 231 and the width direction of the diaphragm piece 200 can be 40°, 45°, 50° or 55°.

[0032] Finally, the moving drive 232 drives the film-tearing angle drive 231 to move along the length direction parallel to the film piece 200. The film-tearing angle drive 231 drives the rotation drive assembly 22 to move. The rotation drive assembly 22 drives the clamping assembly 21 to move. The clamping assembly 21 moves along the length direction parallel to the film piece 200 to tear the entire protective film 201 off the body 202 of the film piece 200, thus completing the film-tearing action.

[0033] Specifically, please refer to Figure 1 The clamping assembly 21 includes a clamping drive 211, and the clamping part 214 includes an upper jaw 212 and a lower jaw 213 that are driven to be connected to the clamping drive 211. The clamping drive 211 drives the upper jaw 212 and the lower jaw 213 to move toward or away from each other to clamp or release the tear film part 2011.

[0034] Based on this, the lower gripper 213 includes a connecting section 2131 and a clamping section 2132 connected to each other. The connecting section 2131 is driven to connect with the clamping drive member 211, and the clamping section 2132 extends from the connecting portion toward the upper gripper 212 to form a clamping opening with the upper gripper 212. By setting the clamping section 2132 to extend from the connecting portion toward the upper gripper 212, the clamping opening is located at an upper position, avoiding interference between the upper gripper 212 and the film application mechanism 10, making the use of the clamping assembly 21 more convenient.

[0035] In addition, this application also provides a film application device, including the film peeling mechanism 20 as described above. Since the film application device adopts all the technical solutions of the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0036] The film application device also includes a film application mechanism 10 that is lifted and mounted on the film tearing mechanism 20. The film application mechanism 10 includes a fixing member 11, a film piece 200 that is fixedly mounted on the fixing member 11, and a film tearing part 2011 that extends out of the fixing member 11.

[0037] The fixing member 11 is used to fix the diaphragm piece 200. The fixing member 11 can adsorb the diaphragm piece 200 by negative pressure adsorption to fix the diaphragm piece 200. The tearing part 2011 of the protective film 201 extends out of the fixing member 11, so that the clamping part 214 of the clamping assembly 21 can clamp the tearing part 2011. The film application mechanism 10 is raised and lowered on the film tearing mechanism 20. During the film tearing process, the translation drive assembly 23 drives the clamping part 214 to move in a direction parallel to the plane of the diaphragm piece 200. At the same time, the film application mechanism 10 rises so that the protective film 201 can be separated from the body 202 of the diaphragm piece 200 more smoothly.

[0038] In the embodiments of this application, please refer to Figure 7The film application mechanism 10 includes a pressing component 13, which is spaced apart from the fixing member 11 along the length of the film member 200. The pressing component 13 is provided with a film application roller 131 for pressing down the film member 200.

[0039] The pressing assembly 13 is equipped with a film-applying roller 131, which is used to press down the film piece 200 to better adhere the film piece 200 to the film to be applied. The film to be applied can be a glass plate, a metal plate, or other structures that require film application.

[0040] Specifically, the film application mechanism 10 includes a film application bracket 12, which is vertically adjustable. A pressing component 13 and a fixing member 11 are sequentially arranged on the film application bracket 12 along the length of the film piece 200. The fixing member 11 includes a large suction plate 111 and a small suction plate 112 sequentially arranged along the length of the film piece. The large suction plate 111 is fixedly mounted on the film application bracket 12. The film application mechanism 10 also includes a suction plate translation drive 14 mounted on the film application bracket 12 and a translation frame 15 drivenly connected to the suction plate translation drive 14. The opposite ends of the small suction plate 112 are respectively connected to the translation frame 15. The pressing component 13 is mounted on the same side of the film application bracket 12 as the small suction plate 112, and the pressing component 13 is provided with a film application roller 131 that can extend into the translation frame 15 and press down on the film piece 200. The pressing assembly 13 includes a roller lifting drive 132 that is driven to connect with the film application roller 131. The roller lifting drive 132 is used to drive the film application roller 131 to lift up and down.

[0041] A large suction plate 111 is fixedly mounted on the film-applying bracket 12, and can adsorb and fix the film piece 200. A small suction plate 112 is located at one end of the film piece 200 near the film-tearing section 2011. The opposite ends of the small suction plate 112 are respectively connected to the translation frame 15, and the translation frame 15 is driven to connect with the suction plate translation drive 14. During the film-tearing operation on the protective film 201 on the film piece 200, the large suction plate 111 and the small suction plate 112 jointly adsorb and fix the film piece 200. With the protective film 201 on the diaphragm 200 already peeled off, and the body 202 of the diaphragm 200 to be attached to the film to be attached, the suction plate translation drive 14 drives the translation frame 15 to move forward. The translation frame 15 drives the small suction plate 112 to move forward, so that a gap is formed between the small suction plate 112 and the large suction plate 111. The roller lifting drive 132 of the pressing assembly 13 drives the film-applying roller 131 to move downward and extend into the translation frame 15, so that the film-applying roller 131 presses the diaphragm 200 onto the film to be attached.

[0042] In the embodiments of this application, please refer to Figure 8The system also includes a visual positioning mechanism 30, whose image acquisition direction is directed downwards towards the film application mechanism 10. The visual positioning mechanism 30 can photograph and position the body 202 of the film piece 200 on the film application mechanism 10 to determine the position of the body 202 of the film piece 200, facilitating subsequent bonding of the body 202 of the film piece 200 to the film to be applied. Those skilled in the art will understand that when the film to be applied moves between the visual positioning mechanism 30 and the film application mechanism 10, the film to be applied can also be photographed and positioned to determine its position, thereby improving bonding accuracy.

[0043] Specifically, the visual positioning mechanism 30 can be set as a CCD visual positioning mechanism 30, which acquires images through a camera and analyzes the images using image processing technology to achieve positioning.

[0044] In the embodiments of this application, please refer to Figure 5 and Figure 6 The film application device also includes a film feeding platform 40 and a film loading platform 50. The film feeding platform 40 and the film loading platform 50 are respectively driven by the translation drive assembly 23, and can pass under the film application mechanism 10 under the drive of the translation drive assembly 23.

[0045] The film loading platform 40 and the film-to-be-applied loading platform 50 can be respectively located at the left and right ends of the translation drive assembly 23, and the film-applied mechanism 10 is located between the film loading platform 40 and the film-to-be-applied loading platform 50. The film loading platform 40 and the film-to-be-applied loading platform 50 are respectively driven by the translation drive assembly 23, and both the film loading platform 40 and the film-to-be-applied loading platform 50 can pass under the film-applied mechanism 10 under the drive of the translation drive assembly 23.

[0046] The film application steps are as follows: The film piece 200 is placed on the film feeding platform 40. The film feeding platform 40 moves to the bottom of the film application mechanism 10. The film application mechanism 10 descends to pick up the film piece 200. The film tearing mechanism 20 moves to the bottom of the film application mechanism 10. The clamping component 21 clamps the tearing part 2011 of the protective film 201 and performs the tearing action. After the tearing is completed, the tearing mechanism 20 moves away. When the film feeding platform 50 moves to the bottom of the film application structure, the film application roller 131 presses down to apply the body 202 of the film piece 200 to the film piece to be applied.

[0047] In the embodiments of this application, please refer to Figure 6 The diaphragm feeding platform 40 is equipped with a diaphragm component positioning assembly 401.

[0048] Specifically, the diaphragm element positioning assembly 401 includes at least two positioning rods 4011 movably disposed on the diaphragm loading platform 40, with the at least two positioning rods 4011 spaced apart. After the diaphragm element 200 is placed on the diaphragm loading platform 40, the positioning rods 4011 move relative to the diaphragm loading platform 40 until the positioning rods 4011 abut against the diaphragm element 200 to limit the diaphragm element 200 and prevent the diaphragm element 200 from shifting on the diaphragm loading platform 40.

[0049] In the embodiments of this application, please refer to Figure 8 The film application device includes at least two film application stations arranged sequentially, each equipped with a film-peeling mechanism 20 and a film-applying mechanism 10. The at least two film application stations are arranged sequentially in a front-to-back direction. By providing at least two film application stations on the film application device, each equipped with a film-peeling mechanism 20 and a film-applying mechanism 10, the film application device can perform at least two film application operations simultaneously, thereby improving the film application efficiency of the device.

[0050] In the description of this application, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0051] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between components; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0052] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0053] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A film-tearing mechanism, characterized in that, The film-tearing mechanism includes: The clamping assembly (21) has a clamping portion (214) for clamping the tear-off portion (2011) of the protective film (201); A rotation drive assembly (22) is driven to connect with the clamping assembly (21), and the clamping assembly (21) rotates the film tearing part (2011) relative to the body (202) of the film piece (200) under the drive of the rotation drive assembly (22); The translation drive assembly (23) is driven to connect with the rotation drive assembly (22), and the driving direction of the translation drive assembly (23) is parallel to the plane of the diaphragm (200).

2. The film-tearing mechanism according to claim 1, characterized in that, The rotation drive assembly (22) includes a rotation motor (221) and a connecting frame (222). The clamping assembly (21) is disposed on the connecting frame (222), and the opening direction of the clamping part (214) is along the radial direction of the output shaft of the rotation motor (221).

3. The film-tearing mechanism according to claim 2, characterized in that, The connecting frame (222) includes a first connecting rod (2221) and a second connecting rod (2222) connected to each other. One end of the first connecting rod (2221) is drivenly connected to the rotating motor (221) and extends radially along the rotation axis of the rotating motor (221). The second connecting rod (2222) is connected to the other end of the first connecting rod (2221) and extends axially along the rotation axis of the rotating motor (221). The clamping assembly (21) is connected to the end of the second connecting rod (2222) away from the first connecting rod (2221).

4. The film-tearing mechanism according to claim 1, characterized in that, The translation drive assembly (23) includes a film tearing corner drive (231) and a moving drive (232). The film tearing corner drive (231) is driven to the rotation drive assembly (22). The driving direction of the film tearing corner drive (231) is set from the corner of the film piece (200) to the middle of the film piece (200). The moving drive (232) is driven to the film tearing corner drive (231). The driving direction of the moving drive (232) is set to be parallel to the length direction of the film piece (200).

5. A film-applying device, characterized in that, The film-tearing mechanism according to any one of claims 1 to 4 is further comprising a film-applying mechanism (10) that is lifted and lowered on the film-tearing mechanism (20), wherein the film-applying mechanism (10) includes a fixing member (11), the film piece (200) is fixedly disposed on the fixing member (11), and the film-tearing part (2011) extends out of the fixing member (11).

6. The film-applying device according to claim 5, characterized in that, The film application mechanism (10) includes a pressing component (13), which is spaced apart from the fixing member (11) along the length of the film piece (200). The pressing component (13) is provided with a film application roller (131) for pressing down the film piece (200).

7. The film-applying device according to claim 6, characterized in that, The film application mechanism (10) further includes a film application bracket (12), a suction plate translation drive (14) disposed on the film application bracket (12), and a translation frame (15) drivenly connected to the suction plate translation drive (14). The film application bracket (12) is vertically adjustable. The pressing component (13) and the fixing member (11) are sequentially disposed on the film application bracket (12) along the length direction of the film piece (200). The fixing member (11) includes components along the film... A large suction plate (111) and a small suction plate (112) are arranged sequentially along the length of the sheet (200). The large suction plate (111) is fixedly mounted on the film-applying bracket (12). The opposite ends of the small suction plate (112) are connected to the translation frame (15). The pressing component (13) is mounted on the film-applying bracket (12) and is mounted on the same side as the small suction plate (112). The film-applying roller (131) can extend into the translation frame (15).

8. The film-applying device according to claim 5 or 6, characterized in that, The film application device further includes a film feeding platform (40) and a film loading platform (50). The film feeding platform (40) and the film loading platform (50) are respectively driven and connected to the translation drive assembly (23), and can pass under the film application mechanism (10) under the drive of the translation drive assembly (23).

9. The film-applying device according to claim 8, characterized in that, The diaphragm feeding platform (40) is equipped with a diaphragm positioning assembly (401).

10. The film-applying device according to claim 5 or 6, characterized in that, The film application device includes at least two film application stations arranged in sequence, and each film application station is provided with the film peeling mechanism (20) and the film application mechanism (10).

Images