A tape tearing mechanism and a tape tearing method

Abstract

This invention discloses a tape tearing mechanism, including a frame. The frame is equipped with a tape assembly, a tearing assembly, a suction cup assembly, and a polarizer stage. The tape assembly is used to wind tape, with both ends of the tape wound onto the tape assembly. The middle portion of the tape is connected to the tearing assembly. The suction cup assembly is used to feed a polarizer from the polarizer stage onto the tearing assembly, causing it to adhere to the tape, thus bonding the tape to and separating the protective film on the polarizer. The tape assembly includes a tape feeding roller and a tape feeding power component that provides power to it. The tape feeding roller drives the tape to move forward or backward, and the tape feeding power component is a bidirectional power component that provides forward or reverse rotation power to the tape feeding roller.

Description

Technical Field

[0001] This invention relates to the field of polarizer film peeling technology, and more particularly to a tape peeling mechanism and tape peeling method. Background Technology

[0002] In the production process of OLED (Organic Electroluminescence Display), the polarizer is an important component of OLED. A protective film needs to be attached to the polarizer during the production process to protect it. When the polarizer needs to be processed, the protective film on the polarizer is removed.

[0003] In existing technologies, adhesive tape is used to peel off the protective film on the polarizer. However, the tape is consumed in large quantities during use, has low utilization rate, and increases production costs. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a tape tearing mechanism and tape tearing method to solve the problems of high consumption, low utilization rate, and increased production costs in the process of using tape in the prior art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] An embodiment of the present invention provides a tape tearing mechanism, including a frame, on which a tape assembly, a tearing assembly, a suction cup assembly, and a polarizer stage are provided. The tape assembly is used to roll up the tape, with both ends of the tape wound onto the tape assembly, and the middle portion of the tape connected to the tearing assembly. The suction cup assembly is used to feed the polarizer on the polarizer stage to the top of the tearing assembly so that it is adhered to the tape, thereby bonding the tape to the protective film on the polarizer and separating them.

[0007] The tape assembly includes: a first mounting frame mounted on the machine frame; a new tape winding shaft, a waste tape winding shaft, and a tape feeding roller rotatably connected to the first mounting frame; and new tape power components, waste tape power components, and tape feeding power components that provide power to each of these components. The two ends of the tape are respectively connected to the new tape winding shaft and the waste tape winding shaft. The new tape winding shaft is used to wind up unused new tape, and the waste tape winding shaft is used to wind up waste tape after the film-tearing operation. The tape feeding roller is used to drive the tape to move forward or backward. The new tape power component is a unidirectional power component, providing power to the new tape winding shaft to rotate in the direction of winding up new tape. The waste tape power component is also a unidirectional power component, providing power to the waste tape winding shaft to rotate in the direction of winding up waste tape. The tape feeding power component is a bidirectional power component, providing forward or reverse rotation power to the tape feeding roller.

[0008] In one possible implementation, the film-tearing assembly includes: a second mounting bracket disposed on the frame, a film-tearing roller rotatably connected to the second mounting bracket, and a film-tearing plate disposed parallel to the side of the film-tearing roller. The adhesive tape passes over the upper sides of the film-tearing roller and the film-tearing plate, and the lower surface of the adhesive tape abuts against the upper sides of the film-tearing roller and the film-tearing plate. When the adhesive tape feeding power member rotates forward, the adhesive tape moves from the new adhesive tape unwinding axis to the waste adhesive tape unwinding axis, and moves from the upper side of the film-tearing plate toward the upper side of the film-tearing roller. When the adhesive tape feeding power member rotates in reverse, the adhesive tape moves from the waste adhesive tape unwinding axis to the new adhesive tape unwinding axis, and moves from the upper side of the film-tearing roller toward the upper side of the film-tearing plate.

[0009] In one possible implementation, the suction cup assembly includes: a third mounting bracket disposed on the frame; a horizontal moving module movably connected to the third mounting bracket; a lifting moving module movably connected to the moving end of the horizontal moving module; and a vacuum suction plate disposed on the lifting end of the lifting moving module. The film-tearing assembly and the polarizer stage are both located below the horizontal moving module. The horizontal moving module is used to drive the lifting moving module to move horizontally between the film-tearing assembly and the polarizer stage. The lifting moving module is used to drive the vacuum suction plate to perform lifting and lowering movements. The vacuum suction plate is used to adsorb the polarizer on the upper side of the polarizer stage and bring it to the upper side of the film-tearing roller and the film-tearing plate to adhere to the tape and then separate to complete the film-tearing process.

[0010] In one possible implementation, the film-tearing assembly further includes a film sensing sensor disposed beside the film-tearing plate, the film sensing sensor being used to sense whether a torn film is attached to the tape.

[0011] In one possible implementation, a first magnetic damping is provided between the new tape power unit and the new tape winding shaft, and a second magnetic damping is provided between the waste tape power unit and the waste tape winding shaft.

[0012] In one possible implementation, a tape guide plate is provided on the travel path of the tape.

[0013] In one possible implementation, both the new tape winding shaft and the waste tape winding shaft are hand-expanding shafts.

[0014] In one possible implementation, both the new conveyor belt power unit and the waste conveyor belt power unit are unidirectional motors, while the conveyor belt feeding power unit is a bidirectional motor.

[0015] In one possible implementation, a control device is also included, which is electrically connected to the tape assembly, the film-tearing assembly, the suction cup assembly, and the polarizer stage.

[0016] The present invention also provides a method for peeling off adhesive tape, characterized in that it includes:

[0017] Film tearing operation steps: The conveyor belt power unit reverses to move the conveyor belt from the upper side of the film tearing roller of the film tearing assembly to the upper side of the film tearing plate of the film tearing assembly. The suction cup assembly picks up the polarizer from the polarizer carrier and moves it to the film tearing roller, so that the polarizer is separated from the film.

[0018] Tape return step: The tape feeding power unit rotates forward to move the tape from the upper side of the film-tearing plate of the film-tearing assembly to the upper side of the film-tearing roller of the film-tearing assembly, so that the film sheet torn off in the previous film-tearing operation step moves with the tape to the side of the film-tearing roller away from the film-tearing plate.

[0019] Compared with the prior art, the tape tearing mechanism of the present invention allows the tape to rotate clockwise or counterclockwise as a whole through the cooperation of the tape feeding power component and the tape feeding roller. This enables the tape to be turned and retracted after the tearing action is completed, reducing the tape length between two tearing actions, improving tape utilization, and reducing production costs.

[0020] The above description is merely an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention, it can be implemented according to the contents of the specification. In order to make the above and other objects, features and advantages of the present invention more obvious and understandable, preferred embodiments are described in detail below. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a perspective view of a tape tearing mechanism according to the present invention;

[0023] Figure 2 This is a schematic diagram of the tape winding route of a tape tearing mechanism according to the present invention;

[0024] Figure 3 This is a front view of the tape assembly of a tape tearing mechanism according to the present invention;

[0025] Figure 4 This is a first perspective view of the tape assembly of a tape tearing mechanism according to the present invention;

[0026] Figure 5 This is a second perspective view of the tape assembly of a tape tearing mechanism according to the present invention;

[0027] Figure 6 This is a perspective view of the film-tearing component of a tape-tearing mechanism according to the present invention;

[0028] Figure 7 This is a perspective view of the suction cup assembly of a tape tearing mechanism according to the present invention;

[0029] Figure 8 This is a front view of the suction cup assembly of a tape tearing mechanism according to the present invention;

[0030] Figure 9 This is a perspective view of the polarizer stage of the tape tearing mechanism of the present invention;

[0031] Explanation of the markings in the image:

[0032] 10. Frame; 20. Tape assembly; 21. First mounting frame; 22. New tape unwinding shaft; 221. New tape power unit; 222. First magnetic damper; 223. No material sensor; 23. Waste tape unwinding shaft; 231. Waste tape power unit; 232. Second magnetic damper; 233. Full material sensor; 24. Tape feeding roller; 241. Tape feeding power unit; 30. Film tearing assembly; 31. Second mounting frame; 32. Film tearing roller; 33. Film tearing plate; 40. Suction cup assembly; 41. Third mounting frame; 42. Horizontal moving module; 43. Lifting moving module; 44. Vacuum suction plate; 50. Polarizing film stage; 60. Tape guide plate. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0034] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0035] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0036] Furthermore, 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. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0037] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; 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. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0038] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0039] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. The illustrative expressions of the above terms in this specification should not be construed as necessarily referring 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. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0040] Please see Figures 1 to 2 This invention provides a tape tearing mechanism, including a frame 10. The frame 10 is equipped with a tape assembly 20, a tearing assembly 30, a suction cup assembly 40, and a polarizer stage 50. The tape assembly 20 is used to wind up tape, with both ends of the tape wound onto it. The middle portion of the tape is connected to the tearing assembly 30. The suction cup assembly 40 is used to feed the polarizer on the polarizer stage 50 to the tearing assembly 30 so that it adheres to the tape, thereby bonding the tape to the protective film on the polarizer and separating them. It is understood that the tape assembly 20 provides tape to the tearing mechanism and controls the forward or reverse rotation of the tape. The middle section of the tape passes through the tearing position provided on the tearing assembly 30. The tape corresponding to the tearing position is the tape that adheres to the polarizer and completes the tearing of the polarizer during the tearing action. In this embodiment, one of the film-tearing processes is as follows: the suction cup assembly 40 picks up the polarizer on the polarizer stage 50 and brings it above the film-tearing assembly 30. The suction cup assembly 40 drives the polarizer to press down onto the tape at the film-tearing position. The suction cup assembly 40 carries the polarizer to contact the tape and moves in the same direction to complete the film-tearing. After the film-tearing is completed, the tape moves in the opposite direction a certain distance to reduce the tape length between the next film-tearing and the current film-tearing, and waits for the next film-tearing action to occur.

[0041] Please see Figures 2 to 5In one embodiment, the tape assembly 20 includes: a first mounting frame 21 disposed on the frame 10; a new tape winding shaft 22, a waste tape winding shaft 23, and a tape feeding roller 24 rotatably connected to the first mounting frame 21; and new tape power components 221, waste tape power components 231, and tape feeding power components 241 that provide power to the first mounting frame 21 respectively. The two ends of the tape are respectively connected to the new tape winding shaft 22 and the waste tape winding shaft 23. The new tape winding shaft 22 is used to wind up unused new tape. The tape assembly includes a waste tape winding shaft 23 for winding up the waste tape after the film-tearing operation, and a tape feeding roller 24 for driving the tape to move forward or backward. The new tape power unit 221 is a unidirectional power unit, providing power to the new tape winding shaft 22 to rotate in the direction of winding the new tape. The waste tape power unit 231 is also a unidirectional power unit, providing power to the waste tape winding shaft 23 to rotate in the direction of winding the waste tape. The tape feeding power unit 241 is a bidirectional power unit, providing forward or reverse rotation power to the tape feeding roller 24. It should be noted that the tape assembly 20 also includes a tension roller mounted on the first mounting frame 21. The tension roller is used to change the direction of the tape and tension it, ensuring stable operation and thus improving production efficiency and product quality. The arrangement of the tension roller is a conventional technique in the prior art and will not be elaborated upon here.

[0042] Preferably, both the new tape unwinding shaft 22 and the waste tape unwinding shaft 23 are hand-expanding shafts. The hand-expanding shaft, also called an air-expanding shaft, is a type of winding and unwinding shaft. After being inflated with compressed air, the key strips on the surface of the shaft can protrude. After deflating, the key strips on the surface quickly retract, which is used to tighten the core. It can quickly inflate and deflate, and achieve rapid material change.

[0043] Optionally, the first mounting frame 21 is also equipped with a material shortage sensor 223 and a material full sensor 233. The material shortage sensor 223 is used to detect whether the amount of new tape on the new tape unwinding shaft 22 is lower than the minimum preset value of tape. If the material shortage sensor 223 detects that the amount of new tape on the new tape unwinding shaft 22 is lower than the minimum preset value of tape, an alarm will be triggered to remind the staff to replenish the new tape. The material full sensor 233 is used to detect whether the amount of waste tape on the waste tape unwinding shaft 23 is higher than the maximum preset value of tape. If the material full sensor 233 detects that the amount of waste tape on the waste tape unwinding shaft 23 is higher than the maximum preset value of tape, an alarm will be triggered to remind the staff to unload the waste tape. It is understandable that the empty material sensor 223 and the full material sensor 233 can be laser sensors. The minimum preset value of the tape is the minimum winding thickness of the tape on the new tape unwinding shaft 22, and the maximum preset value of the tape is the maximum winding thickness of the tape on the waste tape unwinding shaft 23. The minimum winding thickness and the maximum winding thickness can be set according to actual usage requirements.

[0044] In one embodiment, a first magnetic damper 222 is provided between the new tape power component 221 and the new tape unwinding shaft 22, and a second magnetic damper 232 is provided between the waste tape power component 231 and the waste tape unwinding shaft 23. Since both the new tape power component 221 and the waste tape power component 231 in the tape tearing mechanism are unidirectional power components, when the tape feeding power component 241 rotates in the forward or reverse direction, it will inevitably conflict with the power direction of the new tape power component 221 or the waste tape power component 231. The setting of the first magnetic damper 222 and the second magnetic damper 232 reduces the power conflict and prevents the power conflict from damaging the new tape power component 221 and the waste tape power component 231, so that the tape assembly 20 can work normally and run smoothly.

[0045] In one embodiment, a tape guide plate 60 is provided on the tape's movement path. The tape guide plate 60 makes the tape more stable during movement and prevents the tape from falling due to gravity and connecting with other components during movement.

[0046] Optionally, both the new conveyor belt power unit 221 and the waste conveyor belt power unit 231 are unidirectional power motors, while the conveyor belt feeding power unit 241 is a bidirectional power motor.

[0047] Please see Figure 1 , Figure 2 as well as Figure 6In one embodiment, the film-tearing assembly 30 includes: a second mounting frame 31 disposed on the frame 10, a film-tearing roller 32 rotatably connected to the second mounting frame 31, and a film-tearing plate 33 disposed parallel to the side of the film-tearing roller 32. The adhesive tape passes over the upper sides of the film-tearing roller 32 and the film-tearing plate 33, and the lower surface of the adhesive tape abuts against the upper sides of the film-tearing roller 32 and the film-tearing plate 33. When the adhesive tape feeding power member 241 rotates forward, the adhesive tape moves from the new adhesive tape unwinding shaft 22 to the waste adhesive tape unwinding shaft 23, and moves from the upper side of the film-tearing plate 33 to the upper side of the film-tearing roller 32. When the adhesive tape feeding power member 241 rotates in reverse, the adhesive tape moves from the waste adhesive tape unwinding shaft 23 to the new adhesive tape unwinding shaft 22, and moves from the upper side of the film-tearing roller 32 to the upper side of the film-tearing plate 33. It should be explained that, generally, when the tape moves from the tearing roller 32 to the tearing plate 33, this is the direction of tape movement during the tearing operation, and it is also the winding direction of the new tape unwinding shaft 22; when the tape moves from the tearing plate 33 to the tearing roller 32, this is the direction of tape retraction to reduce the tape length between the next tear and the current tear, and it is also the winding direction of the waste tape unwinding shaft 23. During the film-tearing operation, the suction cup assembly 40 picks up the polarizer of the film to be peeled and places it against the tape on the upper side of the film-tearing roller 32. Due to the elastic space of the film-tearing roller 32, the tape above it will adhere more closely to the polarizer of the film to be peeled. Then, the polarizer and the tape move together toward the film-tearing plate 33. When the film-tearing plate 33 moves to the side away from the film-tearing roller 32, the tape will move downwards, and the suction cup assembly 40 will move upwards again in the original direction of movement. Thus, the polarizer is successfully separated from the film on it. The polarizer is picked up and carried away by the suction cup assembly 40, and the film is adhered and carried away by the tape. The film-tearing operation is thus completed. After completing one film-tearing operation, a tape pull-back operation can be performed to reduce the direction of tape movement between the next film-tearing operation and the current film-tearing operation. That is, the position of the tape with the film attached in the previous film-tearing operation is moved to the side of the film-tearing roller 32 away from the film-tearing plate 33, so that the polarizer in the next film-tearing operation is attached to the back side of the film that was attached and torn off in the previous film-tearing operation. Note that the back side here refers to the last point when the tape moves from the new tape unwinding shaft 22 to the waste tape unwinding shaft 23.

[0048] In one embodiment, the film-tearing assembly 30 further includes a film sensing sensor, which is disposed beside the film-tearing plate 33. The film sensing sensor is used to sense whether there is a torn film attached to the tape. After the tape tearing mechanism performs a film-tearing action, the film sensing sensor senses whether there is a film torn off on the tape during the tearing action. If there is, the tape tearing mechanism continues to work normally; if not, the tape tearing mechanism stops working and alarms, thus ensuring the stability of the tape tearing mechanism and enabling timely detection of film-tearing failures.

[0049] Please see Figure 1 , Figure 2as well as Figure 7 and Figure 8 In one embodiment, the suction cup assembly 40 includes: a third mounting frame 41 disposed on the frame 10, a horizontal moving module 42 movably connected to the third mounting frame 41, a lifting moving module 43 movably connected to the moving end of the horizontal moving module 42, and a vacuum suction plate 44 disposed on the lifting end of the lifting moving module 43. The film-tearing assembly 30 and the polarizer stage 50 are both located below the horizontal moving module 42. The horizontal moving module 42 is used to drive the lifting moving module 43 to move horizontally between the film-tearing assembly 30 and the polarizer stage 50. The lifting moving module 43 is used to drive the vacuum suction plate 44 to perform lifting and lowering movements. The vacuum suction plate 44 is used to adsorb the polarizer on the upper side of the polarizer stage 50 and bring it to the upper side of the film-tearing roller 32 and the film-tearing plate 33 to adhere to the tape and then separate to complete the film-tearing.

[0050] Optionally, the third mounting bracket 41 has a two-column, one-beam structure. The beam is connected to the upper ends of the two columns and is placed horizontally. The horizontal movement module 42 consists of a horizontal lead screw motor, a horizontal lead screw, a horizontal slider, a horizontal guide rail, and a horizontal guide seat, all mounted on the beam. The horizontal lead screw is rotatably connected to the beam and is placed horizontally. The horizontal slider is threadedly connected to the horizontal lead screw. The horizontal lead screw motor drives the horizontal lead screw to rotate. The horizontal slider is connected to the horizontal guide seat. The horizontal guide rail is fixedly connected to the beam and is placed horizontally. The horizontal guide seat is slidably connected to the horizontal guide rail. Therefore, when the horizontal lead screw motor drives the horizontal lead screw to rotate, the horizontal slider will undergo horizontal displacement on the horizontal lead screw, thereby causing the horizontal guide seat to undergo horizontal displacement on the horizontal guide rail. Specifically, setting the lead screw and slider mechanism as a horizontal movement module 42 is a common technical means in the prior art and will not be elaborated here.

[0051] Optionally, the lifting and moving module 43 includes a vertical lead screw motor, a vertical lead screw, a vertical slider, and a vertical guide rail, all mounted on a horizontal guide seat. The vertical guide rail is fixedly connected to the horizontal guide seat and placed vertically. The vertical lead screw is rotatably connected to the vertical guide rail, and the vertical slider is threadedly connected to the vertical lead screw. The vertical lead screw motor drives the vertical lead screw to rotate, and the vertical slider is also slidably connected to the vertical guide rail. Therefore, when the vertical lead screw motor drives the vertical lead screw to rotate, the vertical slider will undergo vertical displacement on the vertical lead screw and the vertical guide rail. A connecting seat is provided on the vertical slider, and a vacuum suction plate 44 is connected to the connecting seat. Thus, when the vertical slider moves, it will drive the vacuum suction plate 44 to perform vertical lifting and lowering movements. Specifically, setting the lead screw and slider mechanism as the lifting and moving module 43 is a common technical means in the prior art, and will not be elaborated here.

[0052] Preferably, the tape tearing mechanism further includes a control device electrically connected to the tape assembly 20, the tearing assembly 30, the suction cup assembly 40, and the polarizer stage 50.

[0053] The present invention also provides a method for peeling off adhesive tape, comprising:

[0054] Film tearing operation steps: The conveyor belt power unit 241 reverses to move the conveyor belt from the upper side of the film tearing roller 32 of the film tearing assembly 30 to the upper side of the film tearing plate 33 of the film tearing assembly 30. The suction cup assembly 40 picks up the polarizer from the polarizer carrier 50 and moves it to the film tearing roller 32, so that the polarizer is separated from the film.

[0055] Tape return step: The tape feeding power unit 241 rotates forward to move the tape from the upper side of the tearing plate 33 of the tearing assembly 30 to the upper side of the tearing roller 32 of the tearing assembly 30, so that the film torn off in the previous tearing operation step moves with the tape to the side of the tearing roller 32 away from the tearing plate 33.

[0056] Specifically, the purpose of the film-tearing operation is to separate the film adsorbed on the polarizer from the polarizer. The tape feeding power component 241 reverses to move the tape from the upper side of the film-tearing roller 32 to the upper side of the film-tearing plate 33. The suction cup assembly 40 adsorbs the polarizer to be peeled and sticks it to the tape on the upper side of the film-tearing roller 32. It moves horizontally along the film-tearing roller 32 towards the film-tearing plate 33. When it moves to the side of the film-tearing plate 33 away from the film-tearing roller 32, the suction cup assembly 40 lifts upward while moving horizontally along the film-tearing roller 32 towards the film-tearing plate 33, so that the polarizer to be peeled is peeled off. After the film is peeled off, it moves with the tape to a preset peeling distance away from the film-tearing roller 32 on the film-tearing plate 33. The preset peeling distance can be selected according to actual needs.

[0057] Specifically, the purpose of the tape return step is to reduce tape waste between two film-tearing steps, so that the film torn off in the previous film-tearing step moves with the tape to a preset pullback distance away from the film-tearing roller 32 in the direction away from the film-tearing plate 33. The preset pullback distance can be set according to actual needs.

[0058] In this embodiment, it should be explained that both the pre-set tearing distance and the pre-set pullback distance can be set according to actual needs. The pre-set tearing distance is set so that the polarizer and the film can be completely separated, and the pre-set pullback distance is set so that it does not affect the next tearing operation. Optionally, in this embodiment, the pre-set tearing distance is 5mm, and the pre-set pullback distance is also 5mm.

[0059] Furthermore, the tape tearing method also includes a tearing preparation step, which includes: the new tape power unit 221 and the waste tape power unit 231 respectively provide power, so that the tape between the new tape unwinding shaft 22 and the waste tape unwinding shaft 23 is in a state of constant tension. Keeping the tape in a state of constant tension can ensure the stable operation of the tearing operation step and the tape return step, and avoid problems such as the tape being easily dented under force and the adhesive not being firm.

[0060] Optionally, a film tearing detection step is also included: after a film tearing action is completed, the film sensing sensor detects whether there is a film piece torn off during the tearing action on the tape. If there is, it waits for the tape return step or stops the machine. If not, the tape tearing mechanism stops working and alarms.

[0061] Compared with the prior art, the tape tearing mechanism of the present invention allows the tape to rotate clockwise or counterclockwise as a whole through the cooperation of the tape feeding power component and the tape feeding roller. This enables the tape to be turned and retracted after the tearing action is completed, reducing the tape length between two tearing actions, improving tape utilization, and reducing production costs.

[0062] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in the present invention, and these modifications or substitutions should all be covered within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. An adhesive tape film-removing mechanism characterized by comprising: The application relates to a polaroid film stripping device, which comprises a rack, a tape assembly, a film stripping assembly, a suction plate assembly and a polaroid film loading platform. The tape assembly comprises a first mounting frame arranged on the rack, a new tape winding shaft, a waste tape winding shaft and a tape feeding roller rotatably connected to the first mounting frame, and a new tape power component, a waste tape power component and a tape feeding power component for providing power for the new tape winding shaft, the waste tape winding shaft and the tape feeding roller respectively. The film stripping assembly comprises a second mounting frame arranged on the rack, a film stripping roller rotatably connected to the second mounting frame and a film stripping plate arranged on the side of the film stripping roller.

2. The tape film tearing mechanism of claim 1, wherein, The suction plate assembly comprises a third mounting frame arranged on the rack, a horizontal movement module movably connected to the third mounting frame, a lifting movement module movably connected to the horizontal movement module, and a vacuum suction plate arranged on the lifting end of the lifting movement module.

3. The tape film tearing mechanism of claim 1, wherein, The film stripping assembly further comprises a film sensing sensor arranged on the side of the film stripping plate, which is used for sensing whether the film is stripped from the tape.

4. The tape film tearing mechanism of claim 1, wherein, The new adhesive tape power element and the new adhesive tape winding and unwinding shaft are provided with a first magnetic damping, and the waste adhesive tape power element and the waste adhesive tape winding and unwinding shaft are provided with a second magnetic damping.

5. The tape film tearing mechanism of claim 1, wherein, An adhesive tape guide plate is arranged on the moving path of the adhesive tape.

6. The tape film tearing mechanism of claim 1, wherein, The new adhesive tape winding and unwinding shaft and the waste adhesive tape winding and unwinding shaft are hand expansion shafts.

7. The tape film tearing mechanism of claim 1, wherein, The new adhesive tape power element and the waste adhesive tape power element are one-way power motors, and the adhesive tape feeding power element is a two-way power motor.

8. The tape film tearing mechanism of claim 1, wherein, The control device is electrically connected to the adhesive tape assembly, the film tearing assembly, the suction cup assembly and the polaroid loading platform.

9. A tape film tearing method based on the tape film tearing mechanism according to any one of claims 1 to 8, characterized by, The control device is electrically connected to the adhesive tape assembly, the film tearing assembly, the suction cup assembly and the polaroid loading platform. The film tearing operation step: the suction cup assembly sucks the polaroid from the polaroid loading platform and moves to the film tearing rubber roller, the adhesive tape feeding power element reverses to move the adhesive tape from the upper side of the film tearing rubber roller to the upper side of the film tearing plate of the film tearing assembly, so that the polaroid is separated from the film piece; The adhesive tape feeding step: the adhesive tape feeding power element rotates to move the adhesive tape from the upper side of the film tearing plate to the upper side of the film tearing rubber roller, so that the film piece torn in the last film tearing operation step moves to the side of the film tearing rubber roller away from the film tearing plate.

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