A film-tearing mechanism, film-tearing equipment, and film-tearing method.

Abstract

The invention discloses a film tearing mechanism, a film tearing device and a film tearing method, and relates to the technical field of battery production. When tearing the film of a sheet material, a rotating device first drives a film tearing disc to rotate along a first rotating direction by a preset first angle, wherein the first rotating direction refers to a direction opposite to the extending direction of an adhesive tape, and the first angle includes two stages, the first stage is a film starting angle, and the second stage is a film tearing angle. When the rotating device rotates by the film starting angle, the adhesive tape stretched on the first extrusion roller is a new adhesive tape with strong viscosity, and can ensure the efficiency of film tearing. Subsequently, the rotating device drives the film tearing disc to continue rotating by the film tearing angle along the first rotating direction. Since the first rotating direction is in the same direction as the extending direction of the adhesive tape, the old adhesive tape is pulled onto the first extrusion roller, that is, the remaining film is separated from the sheet material by the old adhesive tape, and the film tearing process is completed, the old adhesive tape is fully utilized, the environmental protection effect is achieved, and the production cost is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of battery production, and in particular to a film tearing mechanism, a film tearing device and a film tearing method. Background Art

[0002] Batteries are important parts that people use in their daily lives. Usually, there is a thin film on the battery, which is attached to the upper and lower sides of the battery. Before using the battery, the film on the surface of the battery needs to be torn off. In the past, manual film tearing was usually used, but manual film tearing has the problem of occupying labor resources, so the mechanical automation of the film tearing process is the development trend.

[0003] The film tearing equipment in the prior art drives the tape to be set on the battery through a driving part such as a cylinder. After the film is attached, the driving part drives the tape to move so as to separate the tape from the battery. However, this film tearing method causes the amount of tape used to be positively correlated with the size of the film, that is, the consumption of tape is too large, resulting in increased production costs. Summary of the invention

[0004] The object of the present invention is to provide a film tearing mechanism, a film tearing device and a film tearing method to solve the problem of excessive consumption of adhesive tape in current film tearing devices.

[0005] To achieve this object, the present invention adopts the following technical solutions:

[0006] A film-tearing mechanism comprises a film-tearing station for placing a sheet material;

[0007] A rotating device is provided on one side of the film tearing station, and a film tearing disc is installed on the rotating end of the rotating device;

[0008] An installation groove is formed in the film tearing disc, and a first winding device and a second winding device are arranged on the bottom of the installation groove, and an adhesive tape is wound on the first winding device;

[0009] The outer side wall of the film tearing plate is respectively provided with a first glue outlet and a second glue inlet, and the first glue outlet and the second glue inlet both penetrate the groove wall of the mounting groove;

[0010] One end of the adhesive tape extends out of the film tearing disc from the first adhesive outlet, extends along the outer side wall of the film tearing disc, is tensioned on the first extrusion roller, and extends into the installation space from the second adhesive inlet, and is fixed on the second winding device;

[0011] When tearing the film, part of the adhesive tape stretched on the first extrusion roller is bonded to the sheet material, and the film tearing disc is driven by the rotating end of the rotating device to rotate along the first rotating direction by a preset first angle.

[0012] Optionally, the first winding device comprises a glue discharging roller rotatably connected to the film tearing disc, and the second winding device comprises a glue collecting roller rotatably connected to the film tearing disc;

[0013] A second squeezing roller is arranged between the glue discharging roller and the glue collecting roller, and the second squeezing roller is mounted on the rotating end of the rotating device;

[0014] The glue discharging roller is arranged on a side of the second extruding roller close to the film tearing station, and the glue collecting roller is arranged on a side of the second extruding roller away from the film tearing station;

[0015] When tearing the film, the glue discharging roller is driven by the film tearing disc to rotate in a direction away from the film tearing station, and the glue collecting roller is driven by the film tearing disc to rotate in a direction close to the film tearing station, wherein the position of the glue discharging roller relative to the second extruding roller remains unchanged, and the position of the glue collecting roller relative to the second extruding roller remains unchanged.

[0016] Optionally, a first guide wheel is provided on an opening edge of the first glue outlet close to the first extrusion roller;

[0017] A second guide wheel is arranged on an opening edge of the second glue inlet close to the first extrusion roller.

[0018] Optionally, a one-way bearing is provided between the film tearing disc and the rotating end of the rotating device; the film tearing disc is sleeved on the outer ring of the one-way bearing, and the rotating end of the rotating device is sleeved in the inner ring of the one-way bearing;

[0019] When the rotating device rotates in the first direction, the one-way bearing locks the film tearing disc and the rotating end, and the position of the second squeezing roller relative to the film tearing disc remains unchanged;

[0020] When the rotating device rotates along the second direction, the one-way bearing does not lock the film tearing disc and the rotating end, and the second squeezing roller can rotate relative to the film tearing disc.

[0021] Optionally, a limiting groove is provided on the fixed end of the rotating device, and a limiting block is convexly provided on the film tearing disc corresponding to the limiting groove;

[0022] When the rotating device rotates by a preset third angle along the second direction, the limiting block is driven by the rotating end to abut against the limiting groove, and the second squeezing roller is driven by the rotating end to collect the adhesive tape into the adhesive collecting roller.

[0023] Optionally, the rotating device comprises a motor, a motor shaft of the motor is connected to an output shaft via a coupling, and the film tearing disc and the second extrusion roller are respectively sleeved on the output shaft;

[0024] The output shaft is also sleeved with a bearing, the outer ring of the bearing is mounted with a first roller mounting seat, and the first extrusion roller is mounted on the first roller mounting seat.

[0025] A film tearing device, comprising a conveying mechanism and the film tearing mechanism as described above;

[0026] The conveying mechanism is used to convey the sheet material to the film tearing station of the film tearing mechanism.

[0027] A film tearing method, applied to the film tearing device as described above;

[0028] The sheet material is conveyed to the film-tearing station, so that the film on the sheet material is adhered by the adhesive tape;

[0029] The rotating device is rotated in a first direction by a preset first angle; wherein the first glue outlet is rotated by the first angle in a direction away from the film tearing station, and the adhesive tape is pulled by the first glue outlet by a first length in a direction opposite to its extending direction.

[0030] Optionally, in the step of rotating the rotating device in a first direction by a preset first angle, wherein the first glue outlet is rotated by the first angle in a direction away from the film tearing station, and the adhesive tape is pulled by the first glue outlet by a first length in a direction opposite to its extending direction, the method further comprises:

[0031] The rotating device continues to rotate in the second direction by a preset third angle; wherein the second glue inlet is rotated by the third angle in a direction away from the film tearing station, and the tape is pulled by the second glue inlet by a third length along its extension direction, and the third length is greater than the sum of the first length and the second length.

[0032] Compared with the prior art, the present invention has the following beneficial effects:

[0033] The film tearing mechanism, film tearing equipment and film tearing method provided by the present invention firstly drive the film tearing disk to rotate along a first rotation direction by a preset first angle, wherein the first rotation direction refers to a direction opposite to the extension direction of the adhesive tape, and the first angle includes two stages, the first stage is the film starting angle, and the second stage is the film tearing angle; when the rotating device rotates to the film starting angle, the adhesive tape stretched on the first extrusion roller is a new adhesive tape with strong viscosity, which can ensure the efficiency of film tearing; then, the rotating device drives the film tearing disk to continue rotating along the first rotation direction by the film tearing angle, and since the first rotation direction is in the same direction as the extension direction of the adhesive tape, the old adhesive tape is pulled onto the first extrusion roller, that is, the remaining film is separated from the sheet material by the old adhesive tape, and the film tearing process is completed, the old adhesive tape is fully utilized, the environmental protection effect is achieved, and the production cost is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0035] The structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with this technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantive technical significance. Any structural modification, change in proportion or adjustment of size, without affecting the effects and purposes that can be achieved by the present invention, should still fall within the scope of the technical contents disclosed by the present invention.

[0036] Figure 1 A first overall structural schematic diagram of the film tearing structure provided in Embodiment 1 of the present invention;

[0037] Figure 2 It is a schematic cross-sectional structure diagram of a rotating device according to Embodiment 1 of the present invention;

[0038] Figure 3 A second overall structural schematic diagram of the film tearing structure provided in the first embodiment of the present invention;

[0039] Figure 4 A schematic diagram of the first state structure of the film tearing structure provided in the first embodiment of the present invention;

[0040] Figure 5 A schematic diagram of the second state structure of the film tearing structure provided in the first embodiment of the present invention;

[0041] Figure 6 A schematic diagram of the third state structure of the film tearing structure provided in the first embodiment of the present invention;

[0042] Figure 7 This is a schematic diagram of the overall structure of the film tearing device provided in Example 2 of the present invention.

[0043] Illustrations: 1. Film tearing station; 2. Rotating device; 21. Limiting groove; 22. Motor; 23. Coupling; 24. Output shaft; 25. Bearing; 26. First roller mounting seat; 3. Film tearing disc; 31. First glue outlet; 32. Second glue inlet; 33. First extrusion roller; 34. Limiting block; 41. Glue outlet roller; 42. Glue collection roller; 43. Second extrusion roller; 5. Tape; 51. New tape; 52. Old tape; 6. One-way bearing. DETAILED DESCRIPTION

[0044] In order to make the purpose, features and advantages of the present invention more obvious and easy to understand, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described below are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0045] In the description of the present invention, it should be understood that the terms "upper", "lower", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. It should be noted that when a component is considered to be "connected" to another component, it may be directly connected to the other component or there may be a centrally arranged component at the same time.

[0046] The technical solution of the present invention is further described below with reference to the accompanying drawings and through specific implementation methods.

[0047] Please refer to Figures 1 to 7 , Figure 1 This is a first overall structural schematic diagram of the film tearing structure provided in the first embodiment of the present invention. Figure 2 FIG. 1 is a schematic cross-sectional view of a rotating device according to a first embodiment of the present invention. Figure 3 This is a second overall structural diagram of the film tearing structure provided in the first embodiment of the present invention, Figure 4 This is a schematic diagram of the first state structure of the film tearing structure provided in the first embodiment of the present invention, Figure 5 This is a schematic diagram of the second state structure of the film tearing structure provided in the first embodiment of the present invention. Figure 6 This is a schematic diagram of the third state structure of the film tearing structure provided in the first embodiment of the present invention. Figure 7 This is a schematic diagram of the overall structure of the film tearing device provided in Example 2 of the present invention.

[0048] Embodiment 1

[0049] The film-tearing structure provided in this embodiment is mainly used in the scenario of battery film-tearing, and can perform the film-tearing process on sheet materials with thin films such as batteries and screens. Among them, the film-tearing structure of this embodiment has the characteristic of high tape utilization rate.

[0050] like Figure 1 , Figures 4 to 6 As shown, the film tearing mechanism of this embodiment includes a film tearing station 1 for placing a sheet material.

[0051] A rotating device 2 is provided on one side of the film tearing station 1 , and a film tearing disc 3 is installed at the rotating end of the rotating device 2 .

[0052] An installation groove is formed in the film tearing disc 3 , and a first winding device and a second winding device are arranged on the bottom of the installation groove, and the adhesive tape 5 is wound on the first winding device.

[0053] The outer side wall of the film tearing disc 3 is respectively provided with a first glue outlet 31 and a second glue inlet 32 ​​, and both the first glue outlet 31 and the second glue inlet 32 ​​penetrate through the groove wall of the installation groove.

[0054] One end of the adhesive tape 5 extends out of the film tearing disc 3 from the first adhesive outlet 31, extends along the outer wall of the film tearing disc 3, is tensioned on the first squeezing roller 33, and extends into the installation space from the second adhesive inlet 32, and is fixed on the second winding device.

[0055] When tearing the film, part of the adhesive tape 5 stretched on the first squeezing roller 33 adheres to the sheet material, and the film tearing disc 3 is driven by the rotating end of the rotating device 2 to rotate along the first rotating direction by a preset first angle.

[0056] Specifically, when tearing the film, first let the rotating device 2 drive the film tearing disc 3 to rotate along the first rotation direction to a preset first angle, wherein the first rotation direction refers to the direction opposite to the extension direction of the adhesive tape 5, and the first angle includes two stages, the first stage is the film starting angle, and the second stage is the film tearing angle; when the rotating device rotates to the film starting angle, the adhesive tape 5 stretched on the first extrusion roller is the new adhesive tape 51, which has strong viscosity and can ensure the efficiency of film tearing; then, the rotating device 2 drives the film tearing disc 3 to continue rotating along the first rotation direction to the film tearing angle. Since the first rotation direction is in the same direction as the extension direction of the adhesive tape 5, the old adhesive tape 52 is pulled onto the first extrusion roller 33, that is, the old adhesive tape 52 is used to separate the remaining film from the sheet material, completing the film tearing process, making full use of the old adhesive tape 52, achieving an environmental protection effect, and reducing production costs. For example, Figure 4 As shown in FIG. 1 , when the rotation angle of the rotating device 2 is the film-forming angle, the adhesive tape 5 stretched on the first extruding roller 33 is the new adhesive tape 51, the adhesive tape 5 on the left side near the second adhesive inlet 32 ​​is the old adhesive tape 52, and the adhesive tape 5 on the right side near the first adhesive outlet 31 is the new adhesive tape 51; then, when the rotation angle of the rotating device 2 is the film-tearing angle, as shown in FIG. Figure 5 As shown, the film tearing disc 3 rotates counterclockwise to drive the adhesive tape 5 to rotate counterclockwise, so that the old adhesive tape 52 is pulled to between the first extrusion roller 33 and the film tearing station 1, thereby achieving the effect of using the old adhesive tape 52 to tear the film.

[0057] That is, when tearing the film from the sheet material, the new tape 51 is extended to between the first extrusion roller 33 and the film tearing station 1. Due to the strong viscosity of the new tape, a corner of the film can be stably separated from the sheet material, thereby ensuring the efficiency of film tearing. After film tearing, the old tape 52 is extended to the outside of the film tearing disk 3 through the second glue inlet 32, extending to between the first extrusion roller 33 and the film tearing station 1, while the new tape 51 moves in a direction away from the first extrusion roller 33, that is, the subsequent film tearing can be completed by the old tape 51 with weaker viscosity. Through the above-mentioned arrangement, the entire film tearing process is divided into two steps, film tearing and film tearing. The film tearing step is first performed by the new tape 51, and the remaining film tearing step is completed by the old tape 52, thereby making full use of the old tape 51, achieving an environmental protection effect, and reducing production costs.

[0058] Furthermore, if Figure 1 , Figures 4 to 6 As shown, the first winding device includes a glue discharging roller 41 rotatably connected to the film tearing disc 3 , and the second winding device includes a glue collecting roller 42 rotatably connected to the film tearing disc 3 .

[0059] A second squeezing roller 43 is disposed between the glue discharging roller 41 and the glue collecting roller 42 . The second squeezing roller 43 is mounted on the rotating end of the rotating device 2 .

[0060] The glue discharging roller 41 is arranged on a side of the second squeezing roller 43 close to the film tearing station 1 , and the glue collecting roller 42 is arranged on a side of the second squeezing roller 43 away from the film tearing station 1 .

[0061] When tearing the film, the glue discharging roller 41 is driven by the film tearing disc 3 to rotate in the direction away from the film tearing station 1, and the glue collecting roller 42 is driven by the film tearing disc 3 to rotate in the direction close to the film tearing station 1, wherein the position of the glue discharging roller 41 relative to the second extrusion roller 43 remains unchanged, and the position of the glue collecting roller 42 relative to the second extrusion roller 43 remains unchanged.

[0062] Specifically, after the sheet enters the film tearing station 1, the glue discharging roller 41 is driven by the film tearing disc 3 to rotate in a direction away from the film tearing station 1, and the glue collecting roller 42 is driven by the film tearing disc 3 to rotate in a direction close to the film tearing station 1, wherein the position of the glue discharging roller 41 relative to the second squeezing roller 43 remains unchanged, and the position of the glue collecting roller 42 relative to the second squeezing roller 43 remains unchanged. In this process, the length of the adhesive tape 5 between the glue discharging roller 41 and the glue collecting roller 42 remains unchanged, but due to the position changes of the first glue outlet 31, the second glue inlet 32, the glue discharging roller 41 and the glue collecting roller 42, the new adhesive tape 51 moves in a direction away from the first squeezing roller 33, and the old adhesive tape 52 moves in a direction close to the first squeezing roller 33, and gradually passes through the gap between the first squeezing roller 33 and the film tearing station 1 during the film tearing process, so that the old adhesive tape 52 is used to complete most of the film tearing process.

[0063] Specifically, a first guide wheel is disposed on an opening edge of the first glue outlet 31 close to the first extrusion roller 33 , and a second guide wheel is disposed on an opening edge of the second glue inlet 32 ​​close to the first extrusion roller 33 .

[0064] Furthermore, a one-way bearing 6 is provided between the film tearing disc 3 and the rotating end of the rotating device 2 ; the film tearing disc 3 is sleeved on the outer ring of the one-way bearing 6 , and the rotating end of the rotating device 2 is sleeved in the inner ring of the one-way bearing 6 .

[0065] When the rotating device 2 rotates in the first direction, the one-way bearing 6 locks the film tearing disc 3 and the rotating end, and the position of the second squeezing roller 43 relative to the film tearing disc 3 remains unchanged.

[0066] When the rotating device 2 rotates along the second direction, the one-way bearing 6 does not lock the film tearing disc 3 and the rotating end, and the second squeezing roller 43 can rotate relative to the film tearing disc 3 .

[0067] Furthermore, if Figure 3 As shown, a limiting groove 21 is provided on the fixed end of the rotating device 2 , and a limiting block 34 is protruded from the film tearing disc 3 corresponding to the limiting groove 21 .

[0068] When the rotating device 2 rotates by a preset third angle along the second direction, the limiting block 34 is driven by the rotating end to abut against the limiting groove 21 , and the second squeezing roller 43 is driven by the rotating end to collect the adhesive tape 5 into the adhesive collecting roller 42 .

[0069] Specifically, the third angle is greater than the first angle, such as Figures 4 to 6 As shown, the first angle is when the film tearing disc 3 is at Figures 4 to 5 The third angle is the change of the film tearing disc 3 in Figures 5 and 6 When the rotating device 2 rotates in the second direction, that is, clockwise, the one-way bearing 6 is not locked at this time, but due to the friction, the relative positions of the second extrusion roller 43, the glue discharging roller 41 and the glue collecting roller 42 remain unchanged until the limit block 34 is stuck in the limit groove 21, that is, the position of the film tearing disc 3 is limited, and the rotating end of the rotating device 2 continues to rotate, driving the second extrusion roller 43 to rotate. At this time, the second extrusion roller 43 rotates relative to the glue discharging roller 41 and the glue collecting roller 42, thereby driving the old tape 52 to be collected in the glue collecting roller 42, and the new tape 51 extends from the glue discharging roller 42. Finally, the rotating device 2 rotates counterclockwise again, so that the end of the new tape 51 is located between the film tearing station 1 and the first extrusion roller 33, in preparation for the next film tearing process, ensuring the continuity of the overall film tearing process and improving the processing efficiency.

[0070] Furthermore, if Figure 2As shown, the rotating device 2 includes a motor 22 , a motor shaft of the motor 22 is connected to an output shaft 24 via a coupling 23 , and the film tearing disc 3 and the second squeezing roller 43 are respectively sleeved on the output shaft 22 .

[0071] The output shaft 22 is also sleeved with a bearing 25 , and the outer ring of the bearing 25 is mounted with a first roller mounting seat 26 , and the first extrusion roller 33 is mounted on the first roller mounting seat 26 .

[0072] In summary, the film-tearing structure provided in this embodiment fully utilizes both the old adhesive and the new adhesive to perform the film-tearing process, and the utilization rate of the adhesive tape is high, which reduces the production cost and ensures the processing efficiency.

[0073] Embodiment 2

[0074] like Figure 7 As shown, the film tearing device includes a conveying mechanism and a film tearing mechanism as in the first embodiment.

[0075] The conveying mechanism is used to convey the sheet material to the film tearing station 1 of the film tearing mechanism.

[0076] Embodiment 3

[0077] A film tearing method, applied to the film tearing device as in the second embodiment, specifically comprising:

[0078] S1, conveying the sheet material to the film-tearing station, so that the film on the sheet material is adhered by the new tape 51;

[0079] S2, rotate the rotating device 2 in a first direction by a preset first angle; wherein the first glue outlet 31 is rotated by a first angle in a direction away from the film tearing station 1, and the adhesive tape 5 is pulled by a first length by the first glue outlet 31 in a direction opposite to its extending direction.

[0080] Further, in step S2: the rotating device 2 is rotated by a preset first angle in a first direction; wherein the first glue outlet 31 is rotated by a first angle in a direction away from the film tearing station 1, and the adhesive tape 5 is pulled by a first length by the first glue outlet 31 in a direction opposite to its extension direction, the method further includes:

[0081] S3, let the rotating device 2 continue to rotate in the second direction by a preset third angle; wherein, the second glue inlet 32 ​​is rotated by a third angle in a direction away from the film tearing station 1, and the tape 5 is pulled by the second glue inlet 32 ​​by a third length along its extension direction, and the third length is greater than the sum of the first length and the second length.

[0082] Specifically, the overall working process of the film tearing equipment is as follows: when the conveying mechanism conveys the sheet material to the film tearing station, the film on the sheet material is stuck by the new tape 51; then, the conveying mechanism continues to convey the sheet material to the right, and the rotating device 2 drives the film tearing disk 3 to rotate counterclockwise. At this time, the one-way bearing 6 is in a locked state, and the rotating device 2 drives the second extrusion roller 43 to rotate at the same time. Therefore, the relative positions of the second extrusion roller 43, the glue discharge roller 41 and the glue collection roller 42 remain unchanged, but the second extrusion roller 43, the glue discharge roller 41 and the glue collection roller 42 rotate counterclockwise relative to the first extrusion roller 33, that is, the glue discharge roller 41 moves away from the first extrusion roller 33, and the glue collection roller 42 approaches the first extrusion roller 33, thereby making the old tape 52 stick to the remaining film, and finally completing the film tearing process with the old tape 52 and a small amount of new tape 51, and the battery is pulled to the next station by the tape 5 while the film is being torn off.

[0083] Next, the rotating device rotates clockwise. At this time, the one-way bearing 6 is in an unlocked state. However, due to the friction force, the relative positions of the second extrusion roller 43, the glue discharging roller 41 and the glue collecting roller 42 remain unchanged until the limit block 34 is inserted into the limit groove 21, that is, the position of the film tearing disc 3 is limited, and the rotating end of the rotating device 2 continues to rotate, driving the second extrusion roller 43 to rotate. At this time, the second extrusion roller 43 rotates relative to the glue discharging roller 41 and the glue collecting roller 42, thereby driving the old adhesive tape 52 to be collected in the glue collecting roller 42, and the new adhesive tape 51 extends from the glue discharging roller 42. Finally, the rotating device 2 rotates counterclockwise again, so that the end of the new adhesive tape 51 is located between the film tearing station 1 and the first extrusion roller 33, in preparation for the next film tearing process, ensuring the continuity of the overall film tearing process and improving the processing efficiency.

[0084] As described above, the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features thereof may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A film tearing mechanism, characterized in that: It includes a film-tearing station (1) for placing a sheet material; A rotating device (2) is provided on one side of the film tearing station (1), and a film tearing disc (3) is installed on the rotating end of the rotating device (2); An installation groove is formed in the film tearing disc (3), a first winding device and a second winding device are arranged on the bottom of the installation groove, and an adhesive tape (5) is wound on the first winding device; The outer side wall of the film tearing disc (3) is respectively provided with a first glue outlet (31) and a second glue inlet (32), and the first glue outlet (31) and the second glue inlet (32) both penetrate the groove wall of the installation groove; One end of the adhesive tape (5) extends out of the film tearing disc (3) from the first adhesive outlet (31), extends along the outer side wall of the film tearing disc (3), is tensioned on the first squeezing roller (33) on the film tearing disc, and extends into the installation groove from the second adhesive inlet (32), and is fixed on the second winding device; When tearing the film, part of the adhesive tape (5) stretched on the first squeezing roller (33) adheres to the sheet material, and the film tearing disc (3) is driven by the rotating end of the rotating device (2) to rotate along the first rotation direction by a preset first angle.

2. The film tearing mechanism according to claim 1, characterized in that: The first winding device comprises a glue discharging roller (41) rotatably connected to the film tearing disc (3), and the second winding device comprises a glue collecting roller (42) rotatably connected to the film tearing disc (3); A second squeezing roller (43) is provided between the glue discharging roller (41) and the glue collecting roller (42), and the second squeezing roller (43) is mounted on the rotating end of the rotating device (2); The glue discharging roller (41) is arranged on a side of the second squeezing roller (43) close to the film tearing station (1), and the glue collecting roller (42) is arranged on a side of the second squeezing roller (43) away from the film tearing station (1); When tearing the film, the glue discharge roller (41) is driven by the film tearing disc (3) to rotate in a direction away from the film tearing station (1), and the glue collection roller (42) is driven by the film tearing disc (3) to rotate in a direction close to the film tearing station (1), wherein the position of the glue discharge roller (41) relative to the second squeezing roller (43) remains unchanged, and the position of the glue collection roller (42) relative to the second squeezing roller (43) remains unchanged.

3. The film tearing mechanism according to claim 2, characterized in that: A first guide wheel is provided on an opening edge of the first glue outlet (31) close to the first extrusion roller (33); A second guide wheel is provided on an opening edge of the second glue inlet (32) close to the first extrusion roller (33).

4. The film tearing mechanism according to claim 2, characterized in that: A one-way bearing (6) is provided between the film tearing disc (3) and the rotating end of the rotating device (2); the film tearing disc (3) is sleeved on the outer ring of the one-way bearing (6), and the rotating end of the rotating device (2) is sleeved on the inner ring of the one-way bearing (6); When the rotating device (2) rotates in a first direction, the one-way bearing (6) locks the film tearing disc (3) and the rotating end, and the position of the second squeezing roller (43) relative to the film tearing disc (3) remains unchanged; When the rotating device (2) rotates in the second direction, the one-way bearing (6) does not lock the film tearing disc (3) and the rotating end, and the second squeezing roller (43) can rotate relative to the film tearing disc (3).

5. The film tearing mechanism according to claim 4, characterized in that: A limiting groove (21) is provided on the fixed end of the rotating device (2), and a limiting block (34) is protrudingly provided on the film tearing disc (3) corresponding to the limiting groove (21); When the rotating device (2) rotates along the second direction by a preset third angle, the limit block (34) is driven by the rotating end to abut against the limit groove (21), and the second squeezing roller (43) is driven by the rotating end to collect the adhesive tape (5) into the adhesive collecting roller (42).

6. The film tearing mechanism according to claim 2, characterized in that: The rotating device (2) comprises a motor (22), the motor shaft of the motor (22) being connected to an output shaft (24) via a coupling (23), and the film tearing disc (3) and the second squeezing roller (43) being respectively sleeved on the output shaft (24); The output shaft (24) is also sleeved with a bearing (25), the outer ring of the bearing (25) is mounted with a first roller mounting seat (26), and the first extrusion roller (33) is mounted on the first roller mounting seat (26).

7. A film tearing device, characterized in that: It comprises a conveying mechanism and a film tearing mechanism as claimed in any one of claims 1 to 6; The conveying mechanism is used to convey the sheet material to the film tearing station (1) of the film tearing mechanism.

8. A film tearing method, characterized in that: Applicable to the film-tearing device as claimed in claim 7; The sheet material is conveyed to the film-tearing station, so that the film on the sheet material is adhered by the adhesive tape (5); The rotating device (2) is rotated in a first direction by a preset first angle; wherein the first glue outlet (31) is rotated by the first angle in a direction away from the film tearing station (1), and the adhesive tape (5) is pulled by the first glue outlet (31) by a first length in a direction opposite to its extension direction.

9. The film peeling method according to claim 8, characterized in that: In the step of rotating the rotating device (2) in a first direction by a preset first angle, wherein the first glue outlet (31) is rotated by the first angle in a direction away from the film tearing station (1), and the adhesive tape (5) is pulled by the first glue outlet (31) by a first length in a direction opposite to its extension direction, the method further comprises: The rotating device (2) is allowed to continue to rotate in the second direction by a preset third angle; wherein the second glue inlet (32) is rotated by the third angle in a direction away from the film tearing station (1), and the adhesive tape (5) is pulled by the second glue inlet (32) by a third length along its extension direction, and the third length is greater than the first length.

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