Film tearing device

Abstract

The utility model discloses a film tearing device. The film tearing device comprises a base, a moving assembly and a clamping assembly. The moving assembly is arranged on the base. The clamping assembly is arranged on the moving assembly. The base is configured to bear and position a workpiece bonded with a protective film. The clamping assembly comprises a support, a supporting piece, a driving piece and a clamping piece, the clamping piece comprises a connecting part and a clamping part which are connected with each other, the end, close to the clamping part, of the connecting part is rotationally connected to the support through a rotating shaft, the end, away from the clamping part, of the connecting part is rotationally connected with the driving piece, the driving piece is configured to abut against the connecting part, and the clamping part rotates around the rotating shaft along with the connecting part. One end, far away from the connecting part, of the clamping part is close to the supporting piece, so that part of the protective film is pushed to the supporting piece. The moving assembly is configured to drive the clamping assembly to move back to the base in the first direction so as to tear off the protective film. The protective film can be clamped by driving one clamping piece to rotate, so that the protective film adhered to a workpiece in a narrow station can be conveniently and accurately torn.

Description

Technical Field

[0001] This application belongs to the field of film-tearing technology, and specifically relates to a film-tearing device. Background Technology

[0002] Before assembling the workpiece, adhesive backing needs to be bonded to it. One side of the adhesive backing is used for bonding, and the other side has a protective film attached to protect it. After the adhesive backing is bonded to the workpiece, the protective film, which is a release film, needs to be peeled off. In related technologies, the film peeling device has difficulty peeling off the protective film bonded to the workpiece in narrow workstations. Utility Model Content

[0003] In view of the above situation, it is necessary to provide a film-tearing device that can accurately tear the film off workpieces in narrow workstations.

[0004] Embodiments of this application provide a film-removing device, including a base, a moving assembly, and a clamping assembly. The moving assembly is disposed on the base. The clamping assembly is disposed on the moving assembly. The base is configured to support and position a workpiece with a protective film adhered to it. The clamping assembly includes a bracket, a support member, a drive member, and a clamping member. The support member is disposed at one end of the bracket near the base, and the drive member is disposed at one end of the bracket away from the base. The clamping member is connected to the drive member and rotatably connected to the bracket. The clamping member includes a connecting portion and a clamping portion that are interconnected. The end of the connecting portion near the clamping portion is rotatably connected to the bracket via a rotating shaft, and the end of the connecting portion away from the clamping portion is rotatably connected to the drive member. The drive member is configured to push against the connecting portion, and the clamping portion rotates with the connecting portion about the rotating shaft so that the end of the clamping portion away from the connecting portion approaches the support member, thereby pushing at least partially the protective film against the support member. The moving assembly is configured to drive the clamping assembly to move away from the base in a first direction to tear off the protective film. The first direction is parallel to the height direction of the base.

[0005] In the aforementioned film-removing device, a driving component drives the end of the connecting part away from the clamping part to rotate around a pivot. The clamping part connected to the connecting part rotates around the pivot with the connecting part, and the end of the clamping part away from the connecting part can rotate to approach the support member, thereby pushing the protective film against the support member. A moving component drives the clamping component to move away from the base, and the end of the clamping part away from the connecting part and the support member drive the protective film to move away from the workpiece in the base, thereby tearing off the protective film adhered to the workpiece. By driving a clamping component to rotate, the protective film can be clamped, facilitating precise film removal from the workpiece in narrow workstations.

[0006] In some embodiments, the bracket includes a limiting rod that passes through the bracket and extends in a direction parallel to the extension direction of the rotating shaft. The limiting rod stops the clamping member when the clamping part moves away from the support member.

[0007] In some embodiments, the bracket is provided with a limiting part, which includes a plurality of insertion positions. The plurality of insertion positions are spaced apart along a second direction, which is perpendicular to the extension direction of the rotating shaft. The insertion positions can accommodate the insertion of a limiting rod to adjust the position of the limiting rod.

[0008] In some embodiments, the film-peeling device further includes a pressure block disposed on a support, which presses the protective film against the workpiece when the support contacts the protective film.

[0009] In some embodiments, the film-tearing device further includes a buffer assembly, which includes a fixed plate, a movable plate, and an elastic element. The fixed plate is fixedly mounted on the bracket, the movable plate is spaced apart from the fixed plate, and the elastic element is connected to the fixed plate and the movable plate respectively. The elastic element is elastically compressed when the pressure block presses against the protective film.

[0010] In some embodiments, the support member includes a support surface facing the base, and the clamping part includes a clamping surface facing the support member. When the clamping part clamps the protective film with the support member, the clamping surface is parallel to the support surface and clamps the protective film.

[0011] In some embodiments, the base is provided with a conveying member and a positioning member. The conveying member can convey a carrier carrying a workpiece, and the positioning member is located on the side of the conveying member opposite to the clamping assembly. The positioning member can position the carrier so that the clamping assembly can clamp the protective film.

[0012] In some embodiments, the positioning element includes a lifting cylinder and a positioning platform. The lifting cylinder is connected to the positioning platform, which is provided with a pin that can be inserted into a carrier. The lifting cylinder drives the positioning platform to move toward the clamping assembly, so that the pin is inserted into the carrier to position the carrier.

[0013] In some embodiments, the base is provided with a waste box for holding the protective film torn off by the clamping assembly; the moving assembly includes a first moving member and a second moving member, the first moving member is disposed on the second moving member, the first moving member is connected to the bracket, the first moving member can drive the bracket to move along a first direction, the second moving member is disposed on the base, the second moving member drives the first moving member and the bracket to move along the extension direction of the rotating shaft, so that the clamping assembly corresponds to the waste box.

[0014] In some embodiments, the film-removing device further includes an air tube disposed on the support, one end of the air tube being located on the side of the support near the clamp, and the other end of the air tube being configured to connect to an air source, the air source providing gas to blow away the protective film electrostatically adsorbed on the support or clamp. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the film-tearing device in one embodiment of this application.

[0016] Figure 2 yes Figure 1 A partial schematic diagram of the film-tearing device.

[0017] Figure 3 yes Figure 1 A schematic diagram of the clamping assembly of the tear-off film device.

[0018] Figure 4 yes Figure 3 A schematic diagram of the clamping component when the protective film is not clamped.

[0019] Figure 5 yes Figure 3 A schematic diagram of the clamping component holding the protective film.

[0020] Figure 6 yes Figure 3 A schematic diagram of the clamping component of the clamping assembly.

[0021] Figure 7 yes Figure 1 A schematic diagram of the buffer component of the tear film device.

[0022] Figure 8 yes Figure 1 A schematic diagram of the clamping parts of the tear film device abutting the limiting rod.

[0023] Explanation of main component symbols

[0024] 100. Film tearing device; 10. Base; 11. Conveying component; 111. Conveying line; 12. Positioning component; 121. Lifting cylinder; 122. Positioning platform; 1221. Pin; 13. Waste box; 20. Moving component; 21. First moving component; 22. Second moving component; 23. Mounting bracket; 30. Clamping component; 31. Support component; 311. Support surface; 32. Driving component; 321. Cylinder body; 322. Piston rod; 33. Clamping component; 331. Connecting part; 332. Clamping part; 3321. Clamping surface ; 3322, Anti-slip teeth; 34, Rotating shaft; 35, Bracket; 351, Fixing frame; 3511, Connecting shaft; 352, Limiting part; 3521, Insertion position; 353, Limiting rod; 40, Air pipe; 50, Buffer assembly; 51, Fixing plate; 52, Moving plate; 521, Pressure block; 53, Elastic element; 54, Guide element; 541, First guide rod; 542, Second guide rod; 200, Carrier; 210, Workpiece; 220, Protective film; 230, Adhesive backing; Z, First direction; X, Second direction; Y, Third direction.

[0025] The following detailed description, in conjunction with the accompanying drawings, will further illustrate this application. Detailed Implementation

[0026] The technical solutions of the embodiments of this application will be described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments.

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

[0028] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0029] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment that is mutually exclusive with other embodiments.

[0030] Please see Figures 1 to 5 As shown, an embodiment of this application provides a film-removing device 100 for removing a protective film 220 adhered to a workpiece 210 (see Figure 220). Figure 4 and Figure 5 The workpiece 210 is bonded to the protective film 220 by the adhesive 230. The film-tearing device 100 peels off the protective film 220, leaving only the adhesive 230 on the workpiece 210 for subsequent assembly.

[0031] Please see Figure 1 The film-peeling device 100 includes a base 10, a moving component 20, and a clamping component 30. The base 10 can be installed on the ground. The moving component 20 is disposed on the base 10, and the clamping component 30 is disposed on the moving component 20. Both the moving component 20 and the clamping component 30 are located above the base 10. The base 10 supports and positions the workpiece 210, and a protective film 220 is adhered to the side of the workpiece 210 facing away from the base 10. The moving component 20 is configured to drive the clamping component 30 to move, so that the clamping component 30 can correspond to the workpiece 210, that is, the clamping component 30 can be located directly above the workpiece 210. The moving component 20 also enables the clamping component 30 to move closer to or away from the base 10 along a first direction Z, so as to adjust the distance between the clamping component 30 and the base 10.

[0032] In the illustrated embodiment, the first direction Z is along the height direction of the base 10. The first direction Z is parallel to the vertical direction.

[0033] In some embodiments, the base 10 is provided with a waste box 13. The waste box 13 can hold the protective film 220 torn off by the clamping assembly 30 to collect the torn protective film 220 and facilitate centralized processing of the torn protective film 220.

[0034] Please combine Figure 2 In some embodiments, the base 10 is provided with a conveying member 11 and a positioning member 12. The conveying member 11 includes two conveying lines 111, which are spaced apart along a third direction Y and are used to convey a carrier 200 along a second direction X. The carrier 200 is used to carry and position the workpiece 210. The positioning member 12 corresponds to the clamping assembly 30, and is located between the two conveying lines 111 on the side of the conveying member 11 facing away from the clamping assembly 30. The positioning member 12 is used to position the carrier 200 on the conveying member 11.

[0035] In the illustrated embodiment, the second direction X is along the length of the base 10, and the third direction Y is along the width of the base 10. The second direction X and the third direction Y are two horizontal directions that are perpendicular to each other.

[0036] The carrier 200 is conveyed along the second direction X by the conveyor 11 to the positioning member 12, which positions the carrier 200. At this time, the protective film 220 can be clamped by the clamping assembly 30, and the clamping assembly 30 can be moved away from the base 10 by the first moving member 21 to tear off the protective film 220. The positioning member 12 cancels the positioning of the carrier 200, and the conveyor 11 can continue to convey the carrier 200 along the second direction X. Therefore, the conveyor 11 can feed the positioning member 12 or unload the workpiece 210 after the film has been torn off.

[0037] Please see Figure 2 In some embodiments, the positioning member 12 includes a lifting cylinder 121 and a positioning platform 122. The lifting cylinder 121 is connected to the positioning platform 122 and is used to drive the positioning platform 122 to move up and down in a first direction Z. The positioning platform 122 is provided with a pin 1221 for inserting the carrier 200. The lifting cylinder 121 is used to drive the positioning platform 122 to move toward the clamping assembly 30, so that the pin 1221 inserts into the carrier 200 to position the carrier 200.

[0038] When the conveyor 11 transports the workpiece 210 loaded with the unpeeled film to above the positioning platform 122, the lifting cylinder 121 drives the positioning platform 122 to rise, causing the carrier 200 to detach from the conveyor 11. The pin 1221 engages the carrier 200 to prevent the carrier 200 from shifting relative to the positioning platform 122. At this time, the position of the carrier 200 is fixed, and the clamping assembly 30 can hold the protective film 220. After the protective film 220 is peeled off the workpiece 210, the lifting cylinder 121 drives the positioning platform 122 to descend, causing the carrier 200 to contact the conveyor 11. The pin 1221 disengages the carrier 200, and the conveyor 11 outputs the carrier 200 along the second direction X.

[0039] In some embodiments, the top of the positioning platform 122 is provided with four pins 1221 for engaging the carrier 200 to prevent the carrier 200 from moving or rotating relative to the positioning platform 122. This application does not limit the number of pins 1221; those skilled in the art can select them according to actual circumstances.

[0040] Please see Figure 1 In some embodiments, the movable component 20 includes a mounting bracket 23, which is fixedly disposed on the upper surface of the base 10.

[0041] Please see Figure 2 In some embodiments, the moving component 20 further includes a first moving member 21 and a second moving member 22. The first moving member 21 is disposed on the second moving member 22. The second moving member 22 is mounted on the mounting bracket 23. The first moving member 21 is connected to the clamping component 30. The first moving member 21 can drive the clamping component 30 to move along a first direction Z to adjust the distance between the clamping component 30 and the base 10, facilitating the removal of the film by the clamping component 30. The second moving member 22 can drive the first moving member 21 and the clamping component 30 to move along a third direction Y to adjust the position of the clamping component 30 so that the clamping component 30 can correspond to the workpiece 210 or the waste box 13.

[0042] After the clamping assembly 30 clamps the protective film 220, the first moving member 21 drives the clamping assembly 30 to move away from the base 10 in the first direction Z to precisely tear off the protective film 220. The second moving member 22 drives the first moving member 21 to move in the third direction Y, so that the gripper assembly is directly above the waste box 13, and the clamping assembly 30 releases the protective film 220, allowing the protective film 220 to fall into the waste box 13. The second moving member 22 drives the first moving member 21 to reset, and the first moving member 21 drives the clamping assembly 30 to reset, thus preparing the clamping assembly 30 for the next film tearing.

[0043] In the illustrated embodiment, the first direction Z, the second direction X, and the third direction Y are all perpendicular to each other.

[0044] In some embodiments, both the first moving member 21 and the second moving member 22 are linear drive structures. The linear drive structure is a lead screw assembly or a linear guide rail; this application does not limit this, and those skilled in the art can choose according to the actual situation.

[0045] Please see Figure 3 In some embodiments, the clamping assembly 30 includes a support member 31, a drive member 32, a clamping member 33, and a bracket 35. The bracket 35 is connected to the first movable member 21. The support member 31 is fixedly disposed at one end of the bracket 35 near the base 10. The drive member 32 is rotatably disposed at one end of the bracket 35 away from the base 10. The clamping member 33 is connected to the drive member 32 and rotatably connected to the bracket 35.

[0046] The clamp 33 includes a connecting portion 331 and a clamping portion 332 that are interconnected. The end of the connecting portion 331 near the clamping portion 332 is rotatably connected to the bracket 35 via a pivot 34, allowing the clamp 33 to rotate relative to the bracket 35. The end of the connecting portion 331 away from the clamping portion 332 is rotatably connected to a driving member 32. The end of the clamping portion 332 away from the connecting portion 331 corresponds to a support member 31.

[0047] Please combine Figure 4 and Figure 5 The driving member 32 pushes the end of the connecting portion 331 away from the clamping portion 332 to rotate around the rotating shaft 34. The clamping portion 332 rotates with the connecting portion 331 around the rotating shaft 34, so that the end of the clamping portion 332 away from the connecting portion 331 approaches the support member 31, thereby partially pushing the protective film 220 against the support member 31. At this time, the clamping portion 332 and the support member 31 clamp the protective film 220.

[0048] In use, the first moving member 21 drives the bracket 35 to move towards the base 10 along the first direction Z, so that the support member 31 contacts the protective film 220; the driving member 32 pushes against the connecting part 331, causing the connecting part 331 and the clamping part 332 to rotate together around the rotating shaft 34 until the clamping part 332 clamps the protective film 220 with the support member 31 (see...). Figure 4 The first moving member 21 drives the bracket 35 to move away from the base 10 along the first direction Z, causing the clamping member 33 and the support member 31 to peel off the protective film 220 adhered to the workpiece 210; the second moving member 22 drives the clamping assembly 30 to move along the third direction Y until the clamping assembly 30 corresponds to the waste box 13; the driving member 32 pushes the connecting part 331 to make the connecting part 331 and the clamping part 332 rotate together around the rotating shaft 34, causing the clamping part 332 to release the protective film 220 (see...). Figure 3 ).

[0049] The protective film 220 can be clamped by rotating one clamp 33. Compared with the two clamps 33 moving towards each other to clamp the protective film 220, it saves space and makes it easier to accurately peel off the protective film 220 that is attached to the workpiece 210 in a narrow work station.

[0050] Please see Figure 3 and Figure 4 In some embodiments, in the second direction X, the length of the protective film 220 is greater than the length of the workpiece 210 and the adhesive 230, so that when the protective film 220 is bonded to the workpiece 210 by the adhesive 230, the protective film 220 can be partially exposed to the workpiece 210, which facilitates the clamping assembly 30 to clamp the protective film 220 exposed to the workpiece 210.

[0051] Please see Figure 4 In some embodiments, the support member 31 includes a support surface 311, which is disposed toward the base 10. See also... Figure 6 The clamping part 332 includes a clamping surface 3321, which is disposed facing the support member 31. (See also...) Figure 5 When the clamping part 332 and the support member 31 clamp the protective film 220, the clamping surface 3321 is parallel to the support surface 311 and clamps the protective film 220, so as to increase the contact area between the clamping member 33 and the support member 31 and the protective film 220, and prevent the protective film 220 from sliding relative to the clamping member 33 when the film is torn.

[0052] When the clamping part 332 and the support member 31 clamp the protective film 220, the connecting part 331 and the rotating shaft 34 are located on the same horizontal plane. The connecting part 331 and the clamping part 332 are spaced apart in the first direction Z, so that the clamping surface 3321 can push the protective film 220 to the support surface 311 along the first direction Z under the drive of the driving member 32, thereby increasing the contact area between the clamping member 33 and the support member 31 and the protective film 220, so that the clamping member 33 and the support member 31 can clamp the protective film 220 more stably.

[0053] In the illustrated embodiment, the clamp 33 is Z-shaped.

[0054] Please see Figure 6 In some embodiments, the clamping surface 3321 is provided with anti-slip teeth 3322, which are used to prevent the protective film 220 from sliding relative to the clamping surface 3321, so that the clamping part 332 and the support member 31 can clamp the protective film 220 more stably.

[0055] Please see Figures 3 to 5In some embodiments, the driving component 32 is a piston cylinder. The piston cylinder includes a cylinder body 321 and a piston rod 322. The cylinder body 321 is connected to the piston rod 322, and the end of the piston rod 322 away from the cylinder body 321 is rotatably connected to the connecting portion 331 of the clamp 33. A bracket 35 is fixedly provided with a fixing frame 351. The fixing frame 351 is provided with a connecting shaft 3511, and the extending direction of the connecting shaft 3511 is parallel to the extending direction of the rotating shaft 34. The end of the cylinder body 321 away from the piston rod 322 is rotatably disposed on the connecting shaft 3511. When the piston rod 322 extends and drives the connecting portion 331 to move, the connecting portion 331 moves in an arc around the rotating shaft 34, and the cylinder body 321 can rotate relative to the fixing frame 351 around the connecting shaft 3511 to prevent the piston rod 322 from jamming.

[0056] In the illustrated embodiment, the extension direction of the rotating shaft 34 is parallel to the third direction Y.

[0057] Please see Figure 8 In some embodiments, the bracket 35 includes a limiting rod 353. The limiting rod 353 passes through the bracket 35. The extending direction of the limiting rod 353 is parallel to the extending direction of the rotating shaft 34. The limiting rod 353 is used to stop the clamping member 33 when the clamping part 332 moves away from the support member 31.

[0058] The rotation range of the clamp 33 is limited by the limiting rod 353 to reduce the space occupied by the rotation of the clamp 33, so as to facilitate the clamp 33 to clamp the protective film 220 in the narrow work station.

[0059] In some embodiments, the bracket 35 is provided with a limiting portion 352. The limiting portion 352 includes a plurality of insertion positions 3521. The plurality of insertion positions 3521 are spaced apart along a second direction X, which is perpendicular to the extension direction of the rotating shaft 34. The limiting rod 353 can be inserted into different insertion positions 3521 to adjust the position of the limiting rod 353, thereby adjusting the rotation range of the clamp 33.

[0060] Please see Figure 4 When the workpiece 210 is small, the distance between the base 10 and the clamp 33 is close, and the space is confined, the limiting rod 353 is inserted into a connection position 3521 closer to the connecting part 331, thus reducing the rotation range of the clamp 33. Conversely, when the workpiece 210 is large, and there is a larger distance between the base 10 and the clamp 33, the limiting rod 353 can be inserted into a connection position 3521 farther from the connecting part 331, thus increasing the rotation range of the clamp 33. The position of the limiting rod 353 is adjusted according to the size of the operating station space to control the rotation range of the clamp 33.

[0061] Please see Figure 7In some embodiments, the limiting part 352 is an arc-shaped groove, and the extending direction of the arc-shaped groove is parallel to the movement trajectory of the connecting part 331, thereby adapting to the movement path of the connecting part 331. A plurality of insertion positions 3521 are spaced apart on the inner wall of the arc-shaped groove, and the limiting rod 353 is cylindrical. The insertion positions 3521 are arc-shaped grooves to position the cylindrical limiting rod 353.

[0062] In some embodiments, the insertion position 3521 can also be a limiting hole, and the limiting rod 353 can be inserted into the limiting hole at different positions to adjust the position of the limiting rod 353.

[0063] Please see Figures 2 to 4 In some embodiments, the film-tearing device 100 further includes an air tube 40. The air tube 40 is disposed on the support 35. One end of the air tube 40 is located on the side of the support 31 near the clamp 33, and the other end of the air tube 40 is used to connect to an air source, which provides gas to blow away the protective film 220 that is electrostatically adsorbed on the support 31 or the clamping part 332.

[0064] The protective film 220 is easily electrostatically attracted to the clamping part 332 or the support 31, preventing the torn protective film 220 from falling into the waste box 13 under the action of gravity. Gas is blown from the air tube 40 onto the clamping assembly 30 towards the base 10 to blow the protective film 220 into the waste box, in preparation for the clamping assembly 30 to tear the film again.

[0065] Please see Figure 4 and Figure 5 In some embodiments, the film-tearing device 100 further includes a pressure block 521 disposed on the support 35. The pressure block 521 is used to press the protective film 220 against the workpiece 210 when the support 31 contacts the protective film 220.

[0066] When the film is peeled off, the first moving member 21 drives the support 35 to move until the pressure block 521 pushes the protective film 220 against the base 10, that is, the pressure block 521 presses down on the protective film 220. At this time, the support surface 311 contacts the protective film 220, and the driving member 32 drives the clamping member 33 to rotate so that the clamping part 332 and the support member 31 clamp the protective film 220. By pressing down on the protective film 220 by the pressure block 521, the adhesive 230 is more firmly bonded to the workpiece 210, so that the adhesive 230 is retained on the workpiece 210 when the film is peeled off, preventing the adhesive 230 from being torn off when the film is peeled off.

[0067] Please see Figure 7 In some embodiments, the film-tearing device 100 further includes a buffer assembly. The buffer assembly includes a fixed plate 51, a movable plate 52, and an elastic element 53. The fixed plate 51 is fixedly mounted on the bracket 35. The movable plate 52 is spaced apart from the fixed plate 51 to facilitate the connection of the elastic element 53. The elastic element 53 connects the fixed plate 51 and the movable plate 52 respectively, and is used to elastically compress the protective film 220 when the pressure block 521 presses against it.

[0068] When the pressure block 521 presses down on the protective film 220, the elastic element 53 is elastically compressed to buffer and dampen the pressure block 521, preventing it from damaging the workpiece 210. When the first moving element 21 drives the bracket 35 to move away from the base 10, the elastic element 53 rebounds, and the pressure block 521 moves closer to the base 10 than the support surface 311, in preparation for the next press of the pressure block 521 on the protective film 220.

[0069] In some embodiments, the buffer assembly further includes a guide member 54, which includes a first guide rod 541 and a second guide rod 542. The first guide rod 541 is fixedly disposed on the fixed plate 51, and the second guide rod 542 is fixedly disposed on the movable plate 52. The first guide rod 541 is sleeved on the second guide rod 542, allowing the second guide rod 542 to move relative to the first guide rod 541. An elastic member 53 is sleeved on the first guide rod 541 to elastically extend and retract when the second guide rod 542 moves relative to the first guide rod 541. Both the first guide rod 541 and the second guide rod 542 extend along a first direction Z to guide the movable plate 52 and the pressure block 521 to move along the first direction Z and prevent the pressure block 521 from shaking.

[0070] Furthermore, those skilled in the art should recognize that the above embodiments are merely illustrative of this application and are not intended to limit this application. Any appropriate changes and variations made to the above embodiments within the essential spirit and scope of this application fall within the scope of this application's disclosure.

Claims

1. A film tearing device, characterized by, The application relates to a film tearing device. The film tearing device comprises a base configured to carry and position a workpiece with a protective film adhered thereto; a moving assembly arranged on the base; a clamping assembly arranged on the moving assembly, the clamping assembly comprising a support, a support piece, a driving piece and a clamping piece, the support being arranged on the moving assembly, the support piece being arranged on one end of the support close to the base, the driving piece being arranged on the other end of the support away from the base, and the clamping piece being connected to the driving piece and rotatably connected to the support; the clamping piece comprises a connecting part and a clamping part connected to each other, one end of the connecting part close to the clamping part is rotatably connected to the support through a rotating shaft, the other end of the connecting part away from the clamping part is rotatably connected to the driving piece, the driving piece is configured to push the connecting part, and the clamping part rotates around the rotating shaft with the connecting part to make one end of the clamping part away from the connecting part close to the support piece, so that at least part of the protective film is pushed to the support piece. The moving assembly drives the clamping assembly to move in a first direction away from the base to tear the protective film, and the first direction is parallel to the height direction of the base. The support comprises a limiting rod, the limiting rod is arranged in the support, the extending direction of the limiting rod is parallel to the extending direction of the rotating shaft, and the limiting rod stops the clamping piece when the clamping part moves away from the support piece. The support is provided with a limiting part, the limiting part comprises a plurality of plug-in positions, the plurality of plug-in positions are arranged in a second direction, the second direction is perpendicular to the extending direction of the rotating shaft, the plug-in positions can be inserted with the limiting rod to adjust the position of the limiting rod.

2. The film tearing device of claim 1, wherein, The film tearing device further comprises a pressing block, the pressing block is arranged on the support, and the pressing block presses the protective film to the workpiece when the support piece contacts the protective film.

3. The film tearing device of claim 2, wherein, The film tearing device further comprises a buffer assembly, the buffer assembly comprises a fixed plate, a moving plate and an elastic piece, the fixed plate is fixedly arranged on the support, the moving plate is arranged in a spaced manner with the fixed plate, the elastic piece is connected to the fixed plate and the moving plate respectively, and the elastic piece is elastically compressed when the pressing block presses the protective film.

4. The film tearing device of any one of claims 1 to 3, wherein, The support piece comprises a support surface, the support surface faces the base, the clamping part comprises a clamping surface, the clamping surface faces the support piece, the clamping surface is parallel to the support surface and clamps the protective film when the clamping part clamps the protective film with the support piece.

5. The film tearing device of claim 4, wherein, The base is provided with a conveying piece and a positioning piece, the conveying piece can convey a carrier carrying the workpiece, the positioning piece is arranged on one side of the conveying piece away from the clamping assembly, and the positioning piece can position the carrier so that the clamping assembly can clamp the protective film.

6. The film tearing device of claim 1, wherein, The positioning piece comprises a jacking cylinder and a positioning platform, the jacking cylinder is connected to the positioning platform, the positioning platform is provided with a plug-in pin capable of plugging the carrier, the jacking cylinder drives the positioning platform to move towards the clamping assembly, the plug-in pin plugs the carrier to position the carrier.

7. The film tearing device of claim 1, wherein, The base is provided with a waste box for accommodating the protective film torn by the clamping assembly.

8. The film tearing device of claim 7, wherein, ​ 9. The film tearing device of claim 1, wherein, ​ The moving assembly comprises a first moving piece and a second moving piece, the first moving piece is arranged on the second moving piece, the first moving piece is connected with the support, the first moving piece can drive the support to move along the first direction, the second moving piece is arranged on the base, the second moving piece drives the first moving piece and the support to move along the extension direction of the rotating shaft, so that the clamping assembly corresponds to the waste box.

10. The film tearing device of claim 9, wherein, The film tearing device further comprises an air pipe, the air pipe is arranged on the support, one end of the air pipe is located on the side of the supporting piece close to the clamping piece, and the other end of the air pipe is configured to be connected with an air source, and the air source provides gas to blow away the protective film statically adsorbed on the supporting piece or the clamping part.

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