A high-precision positioning system for laser die-cutting

Abstract

The present invention relates to a high-precision positioning system for laser die-cutting, belonging to the field of laser cutting technology. The high-precision positioning system for laser die-cutting comprises a frame and a working platform arranged on the frame, and also comprises a positioning clamping mechanism arranged on the working platform, wherein the positioning clamping mechanism comprises a positioning seat relatively arranged on both sides of the working platform and two clamping strips arranged on the positioning seat, wherein the two clamping strips on the positioning seat are respectively located on the upper and lower sides of the edge of a film product, and the two clamping strips on the positioning seat are both rollingly embedded with a plurality of balls on one side close to the film product, wherein the balls are used to abut against the film product, and a limiting component for limiting the rolling of the plurality of balls on the corresponding two clamping strips is arranged on the positioning seat. The present invention has the advantages of being able to facilitate the rapid transmission of the film product while satisfying the clamping and positioning of the film product, and helping to ensure processing efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of laser cutting, and in particular to a high-precision positioning system for laser die-cutting. Background Art

[0002] Laser die cutting is a thermal cutting method that uses a focused high-power density laser beam to irradiate the material and cut it. Optical film refers to a thin film formed by plating or coating one or more dielectric films or metal films, or a combination of these two types of films, on an optical element or an independent substrate; in the processing of optical films, a laser cutting machine is usually required to cut the product.

[0003] In the related art, a Chinese patent document with publication number CN210878143U discloses a laser cutting machine for cutting thin films, including a working platform, a pair of conveying rollers, a winding roller, a pair of clamping mechanisms and a laser cutting mechanism. The clamping mechanisms are respectively arranged on the two sides of the working platform. The clamping mechanisms include an upper clamping bar and a lower clamping bar. The outer side of the upper clamping bar is pivotally connected to the outer side of the lower clamping bar. The pivotal parts of the upper clamping bar and the lower clamping bar are provided with elastic elements for applying elastic force to the upper clamping bar so that the upper clamping bar is closed to the lower clamping bar. In the process of cutting the thin film product, the thin film product is conveyed toward the winding roller through the conveying roller, and the two sides of the thin film are located between the upper clamping bar and the lower clamping bar and are clamped. When the laser cutting machine moves to cut the thin film, the upper clamping bar and the lower clamping bar constitute a positioning system to position and clamp the thin film product.

[0004] With respect to the above-mentioned related technologies, after the corresponding position of the film product is cut during the laser cutting process, the film product is continued to be conveyed through the cooperation of the conveying roller and the winding roller, so that the position to be cut is moved to the bottom of the laser cutting machine to continue die-cutting. However, since the upper clamping bar and the lower clamping bar always clamp the film product, the conveying of the film product is difficult, affecting the processing efficiency. Summary of the invention

[0005] In order to meet the requirements of clamping and positioning a film product while facilitating the rapid transmission of the film product and helping to ensure processing efficiency, the present invention provides a high-precision positioning system for laser die-cutting.

[0006] The present invention provides a high-precision positioning system for laser die-cutting, which adopts the following technical solutions:

[0007] A high-precision positioning system for laser die-cutting, comprising a frame and a working platform arranged on the frame, and also comprising a positioning clamping mechanism arranged on the working platform, the positioning clamping mechanism comprising a positioning seat relatively arranged on both sides of the working platform and two clamping strips arranged on the positioning seat, the two clamping strips on the positioning seat are respectively located on the upper and lower sides of the edge of a film product, and a plurality of balls are rollingly embedded on a side of the two clamping strips on the positioning seat close to the film product, the balls are used to abut against the film product, and a limiting component for limiting the rolling of the plurality of balls on the corresponding two clamping strips is provided on the positioning seat.

[0008] Preferably, the limiting assembly includes a limiting rod slidably arranged on the clamping strip, a connecting strip slidably arranged on the clamping strip, a pushing member arranged on the clamping strip, a pressing member arranged on the frame and a synchronizing member arranged on the positioning seat, the limiting rods corresponding to the balls one by one, the sliding direction of the limiting rods being arranged in the vertical direction, the limiting rods being used to abut against the corresponding balls to limit the rolling of the corresponding balls, the connecting strips being located on the side of the corresponding clamping strip away from the film product, the end of the limiting rods away from the corresponding balls being connected to the corresponding connecting strip, the pushing member being used to push the corresponding connecting strip to drive multiple limiting rods to slide in a direction away from the clamping strip, the pressing member being used to drive the connecting strip located above the film product to move in the direction of the film product, and the synchronizing member being used to make the two connecting strips on the positioning seat slide synchronously in a direction close to or away from the film product.

[0009] Preferably, an anti-skid pad is provided at one end of the limiting rod close to the corresponding ball, and the anti-skid pad is used to abut against the corresponding ball.

[0010] Preferably, the pushing member includes a spring for pushing the connecting strip to drive the corresponding plurality of limiting rods to slide in a direction away from the clamping strip, one end of the spring is arranged on the corresponding clamping strip, and the other end is arranged on the corresponding connecting strip.

[0011] Preferably, the positioning system also includes a laser cutting mechanism arranged on the frame, the laser cutting mechanism includes a cutting frame mounted on the frame, a laser cutting head slidably arranged on the cutting frame and a driving source arranged on the cutting frame, the sliding direction of the laser cutting head is parallel to the arrangement direction of the two positioning seats, the driving source is used to drive the laser cutting head to slide, a support rod is arranged on the connecting strip located above the film product, the pressing member includes a first repelling magnet arranged on the laser cutting head and a second repelling magnet arranged on the support rod, the first repelling magnet is located above the second repelling magnet, the first repelling magnet is used to drive the second repelling magnet to move in a direction away from the first repelling magnet, the repulsive force between the first repelling magnet and the second repelling magnet is greater than the elastic force of the spring, and when the laser cutting head is located at the initial position at the end of the cutting frame, the first repelling magnet and the second repelling magnet are misaligned.

[0012] Preferably, a sleeve is commonly sleeved on the support rods at both sides, the second repelling magnets are arranged on the sleeve on the support rod, and the second repelling magnets on the support rods at both sides are connected.

[0013] Preferably, distance meters for measuring the distance from the edge of the film on the corresponding side to the edge of the working platform are provided on opposite sides of the working platform, the positioning seat is slidably arranged on the working platform, the sliding direction of the positioning seat is parallel to the arrangement direction of the two positioning seats, the sleeve is fixed to the support rod on one side and is slidably connected to the support rod on the other side, a sliding member for driving the positioning seat to slide is provided on the frame, and the distance meter and the sliding member are both wirelessly connected to the external controller.

[0014] Preferably, the synchronizing member includes a gear and a rack, the gear is rotatably arranged on a positioning seat, the rotation axis of the gear is parallel to the arrangement direction of the two positioning seats, the rack corresponds one-to-one to the connecting strip on the positioning seat, the rack is arranged on the corresponding connecting strip, the length direction of the rack is parallel to the sliding direction of the connecting strip, and the gear is located between the two racks on the corresponding side and is respectively meshed with the corresponding two racks.

[0015] Preferably, the clamping strip located above the film product is slidably disposed on a corresponding positioning seat along a vertical direction, and the positioning seat is provided with an adjusting member for adjusting the sliding movement of the clamping strip located above the film product.

[0016] Preferably, the adjusting member comprises a screw threadedly provided on the positioning seat, the rotation axis of the screw is arranged along the vertical direction, and the screw is rotationally connected to a clamping strip located above the film product.

[0017] In summary, the present invention includes the following beneficial technical effects:

[0018] When it is necessary to cut the film product, the limiting component is used to limit the multiple ball bearings on the corresponding two clamping bars on the positioning seat, so that the ball bearings cannot rotate, thereby satisfying the cooperation between the two clamping bars and the multiple ball bearings to clamp and position the film product, so that the film product is not easily shifted or curled during cutting; when the film product is cut and needs to be conveyed, the limiting component is used to release the restriction on the ball bearings. Since the ball bearings on the clamping bars can roll, the resistance to the conveying of the film product is small, which facilitates the rapid conveying of the film product and helps to ensure processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present invention.

[0020] Figure 2 It is a partial structural cross-sectional view of an embodiment of the present invention.

[0021] Figure 3 It is a partial structural sectional exploded view of an embodiment of the present invention.

[0022] Figure 4 yes Figure 3 Enlarged view of part A.

[0023] Explanation of the reference numerals in the accompanying drawings: 1. frame; 2. working platform; 3. positioning seat; 4. clamping strip; 5. ball bearing; 6. limiting rod; 7. connecting strip; 8. pressing member; 81. first repelling magnet; 82. second repelling magnet; 9. synchronization member; 91. gear; 92. rack; 10. anti-slip pad; 11. spring; 12. cutting frame; 13. laser cutting head; 14. support rod; 15. sleeve; 16. rangefinder; 17. screw; 18. through hole; 19. cylinder. DETAILED DESCRIPTION

[0024] The following combination Figure 1-Figure 4 The present invention is described in further detail.

[0025] The embodiment of the present invention discloses a high-precision positioning system for laser die cutting. Figure 1 The high-precision positioning system for laser die-cutting includes a frame 1, a working platform 2, a laser cutting mechanism and a positioning clamping mechanism. The working platform 2 is fixedly arranged on the frame 1, and the laser cutting mechanism is arranged on the frame 1, and is used to laser cut the film product passing below. The positioning clamping mechanism is arranged on the working platform 2. Specifically, the positioning clamping mechanism includes a positioning seat 3 and a clamping bar 4. Two positioning seats 3 are arranged, and the two positioning seats 3 are arranged on both sides of the working platform 2. The arrangement direction of the two positioning seats 3 is perpendicular to the conveying direction of the film product, and the length direction of the positioning seat 3 is parallel to the conveying direction of the film product; the clamping bar 4 is arranged on the positioning seat 3 and there are two clamping bars 4 on each positioning seat 3. The length direction of the clamping bar 4 is parallel to the conveying direction of the film product. The two clamping bars 4 on the positioning seat 3 are respectively located on the upper and lower sides of the edge of the film product, and are used to clamp and position the film product.

[0026] Reference Figure 1 and Figure 2 A plurality of balls 5 are rollingly embedded on one side of the two clamping strips 4 on the positioning seat 3 close to the film product, and the balls 5 on the upper and lower clamping strips 4 correspond to each other one by one. The balls 5 are used to abut against the film product. A limiting component for limiting the rolling of the plurality of balls 5 on the corresponding two clamping strips 4 is provided on the positioning seat 3.

[0027] When in use, the opposite side edges of the continuous film product are respectively located between the upper and lower clamping bars 4, and the balls 5 on the clamping bars 4 are in contact with the film product. When the laser cutting mechanism cuts the film product, the limiting component limits the multiple balls 5 on the corresponding two clamping bars 4 on the positioning seat 3, so that the balls 5 cannot roll, thereby realizing the cooperation between the two clamping bars 4 and the multiple balls 5 to clamp and position the film product, so that the film product is not easily displaced or curled during cutting; when the film product is cut and needs to be transported to move the part to be cut to the bottom of the laser cutting mechanism, the limiting component releases the restriction on the balls 5. Since the balls 5 on the clamping bars 4 can roll, the resistance to the transmission of the film product is small, which facilitates the rapid transmission of the film product, and the film product is not easily damaged, which helps to ensure processing efficiency.

[0028] Reference Figure 1 In order to facilitate the laser cutting of thin film products, the laser cutting mechanism includes a cutting frame 12, a laser cutting head 13 and a driving source. The cutting frame 12 is a door-type frame and is mounted on the frame 1. Two positioning seats 3 are located in the cutting frame 12. The laser cutting head 13 is slidably arranged on the cutting frame 12. The sliding direction of the laser cutting head 13 is parallel to the arrangement direction of the two positioning seats 3. The driving source is installed on the cutting frame 12 to drive the laser cutting head 13 to slide. The driving source can be a rodless cylinder, a rodless electric cylinder, etc., which is not limited here. By driving the laser cutting head 13 to move on the cutting frame 12, the thin film product under the laser cutting head 13 can be cut. The laser cutting head 13 will move to any end of the cutting frame 12 to reset after each cutting. After the uncut thin film product moves to the bottom of the laser cutting head 13, the laser cutting head 13 moves away from the initial position for cutting.

[0029] Reference Figure 1 and Figure 2 In order to facilitate limiting the rotation of the ball 5, the limiting assembly includes a limiting rod 6, a connecting strip 7, a pushing member, a pressing member 8 and a synchronous member 9. The limiting rod 6 corresponds to the ball 5 one by one. The limiting rod 6 is slidably penetrated on the side of the clamping strip 4 where the corresponding ball 5 is located away from the film product. The sliding direction of the limiting rod 6 is set in the vertical direction. The limiting rod 6 is used to abut the corresponding ball 5 to limit its rotation.

[0030] Reference Figure 3 and Figure 4 In order to improve the limiting effect on the ball 5, a non-slip pad 10 is fixed to the side of the limiting rod 6 close to the corresponding ball 5. The non-slip pad 10 is used to abut against the corresponding ball 5. The non-slip pad 10 is an arc-shaped silicone pad. The non-slip pad 10 abuts against the corresponding ball 5 to increase the friction of the rotation of the ball 5, thereby improving the limiting effect on the ball 5.

[0031] Reference Figure 1 and Figure 2 The connecting strips 7 correspond to the clamping strips 4 one by one, and the connecting strips 7 are slidably arranged on the side of the corresponding clamping strip 4 away from the film product. The end of the limiting rod 6 away from the corresponding ball 5 is fixedly connected to the corresponding connecting strip 7. The pushing member is arranged on the clamping strip 4, and the pushing member is used to push the corresponding connecting strip 7 to drive the corresponding multiple limiting rods 6 to slide in the direction away from the clamping strip 4; the pressing member 8 is arranged on the laser cutting head 13, and the pressing member 8 is used to drive the connecting strip 7 located above the film product to move in the direction of the film product. The synchronous member 9 is arranged on the positioning seat 3, and the synchronous member 9 is used to make the two clamping strips 4 on the positioning seat 3 slide synchronously in the direction close to or away from the film product.

[0032] Reference Figure 1 and Figure 2 In order to facilitate pushing the corresponding connecting strip 7 to drive the corresponding plurality of limiting rods 6 to slide in a direction away from the clamping strip 4, the pushing member includes a spring 11, which is located between the connecting strip 7 and the corresponding clamping strip 4, with one end of the spring 11 fixed to the corresponding clamping strip 4 and the other end fixed to the corresponding connecting strip 7. In order to improve the pushing effect, in the embodiment of the present invention, a plurality of springs 11 are distributed at intervals between each connecting strip 7 and the corresponding clamping strip 4.

[0033] Reference Figure 1 and Figure 2 In order to facilitate driving the connection strip 7 located above the film product to move toward the film product, a support rod 14 is fixed on the connection strip 7 located above the film product, and the support rod 14 is L-shaped. The pressing member 8 includes a first repelling magnet 81 and a second repelling magnet 82. The first repelling magnet 81 is fixed on the laser cutting head 13, and the second repelling magnet 82 is arranged on the support rod 14. The first repelling magnet 81 is located above the second repelling magnet 82. The first repelling magnet 81 is used to drive the second repelling magnet 82 to move in a direction away from the first repelling magnet 81. The repulsive force between the first repelling magnet 81 and the second repelling magnet 82 is greater than twice the sum of the elastic forces of multiple springs 11. When the laser cutting head 13 is located at the initial position at the end of the cutting frame 12, the first repelling magnet 81 is misaligned with the second repelling magnet 82. In the embodiment of the present invention, two first repelling magnets 81 are arranged relatively along the center line of the laser cutting head 13, and the L-shaped support rod 14 on the connection strip 7 located above the film product corresponds to the first repelling magnet 81 one by one.

[0034] Reference Figure 1 and Figure 3In order to facilitate the two clamping bars 4 on the positioning seat 3 to slide synchronously toward or away from the film product, the synchronization member 9 includes a gear 91 and a rack 92. The gear 91 is rotatably arranged on the positioning seat 3, and the rotation axis of the gear 91 is parallel to the arrangement direction of the two positioning seats 3. The gear 91 is located in the middle of the positioning seat 3; the rack 92 corresponds to the connecting bar 7 on the positioning seat 3 one by one, and the rack 92 is fixed on the corresponding connecting bar 7. The length direction of the rack 92 is parallel to the sliding direction of the connecting bar 7. The gear 91 is located between the two racks 92 on the corresponding side and meshes with the corresponding two racks 92 respectively. Through the meshing of the gear 91 and the corresponding two racks 92, when the connecting bar 7 above the film product slides, it can drive the corresponding connecting bar 7 below to move synchronously in the opposite direction.

[0035] When the laser cutting head 13 is located at the initial position, that is, at either end of the cutting frame 12, the first repelling magnet 81 is misaligned with the second repelling magnet 82. At this time, the connecting bar 7, under the elastic force of the multiple springs 11, makes the multiple limiting rods 6 move away from the corresponding balls 5, so that the balls 5 can roll, which is convenient for the transmission of the film product; when the uncut film product is transmitted to the bottom of the laser cutting head 13, the laser cutting head 13 moves to the middle of the cutting frame 12, away from the initial position for cutting, the first repelling magnet 81 is aligned with the second repelling magnet 82, and the first repelling magnet 81 will repel the second repelling magnet 82 in the direction away from the first repelling magnet 81. The connecting strip 7 located above the film product is pushed downward through the second repelling magnet 82 and the support rod 14, and the connecting strip 7 located above the film product drives the corresponding rack 92 to move, so that the gear 91 rotates, and the gear 91 drives the rack 92 on the connecting strip 7 located below the film to slide, so that the two connecting strips 7 on the positioning seat 3 drive the corresponding multiple limiting rods 6 to approach the ball 5, and the anti-slip pad 10 on the limiting rod 6 abuts against the ball 5, thereby limiting the rotation of the ball 5, so that the ball 5 on the upper and lower clamping strips 4 clamps and fixes the edge of the film product, thereby facilitating laser cutting of the film product and preventing the film product from moving or curling.

[0036] Reference Figure 1 The corresponding support rods 14 on both sides of the length direction of the frame 1 are jointly sleeved with a sleeve 15, the second repulsive magnets 82 are fixed on the sleeve 15, and the second repulsive magnets 82 corresponding to the two support rods 14 are integrally formed on the sleeve 15, so that when the laser cutting head 13 is only aligned with the second repulsive magnets 82 on one side of the support rod 14, the sleeve connection of the two support rods 14 can drive the support rod 14 on the other side to move downward synchronously.

[0037] Reference Figure 1, distance meters 16 for measuring the distance from the edge of the film on the corresponding side to the edge of the working platform 2 are set up on the opposite sides of the working platform 2. The distance meters 16 are wirelessly connected to the external controller. The distance meters 16 are located at the end of the positioning seat 3 away from the film winding roller; the positioning seat 3 is slidably arranged on the working platform 2, and the sliding direction of the positioning seat 3 is parallel to the arrangement direction of the two positioning seats 3. The sleeve 15 is fixedly connected to the corresponding support rod 14 on one side and slidably connected to the corresponding support rod 14 on the other side to adapt to the sliding of the two positioning seats 3; a sliding member for driving the positioning seat 3 to slide is arranged on the frame 1. In the embodiment of the present invention, the sliding member includes a cylinder 19 fixedly mounted on the frame 1, and each positioning seat 3 corresponds to two cylinders 19. The positioning seat 3 is fixed to the piston rod of the corresponding cylinder 19, and the cylinder 19 is wirelessly connected to the external controller. In other embodiments, the cylinder 19 can be replaced by an electric cylinder, an electric push rod, etc.

[0038] The distance from the edge of the film on the corresponding side to the edge of the working platform 2 is measured by the distance meter 16 and transmitted to the external controller. The external controller compares the received distance value with the preset value to start the cylinder 19 to drive the positioning seat 3 to move the film product, thereby positioning and adjusting the film product, which helps to improve the positioning accuracy of the film product.

[0039] Reference Figure 2 and Figure 4 The clamping strip 4 located above the film product is slidably arranged on the corresponding positioning seat 3 in the vertical direction, and the positioning seat 3 is provided with an adjusting member, which is used to adjust the clamping strip 4 located above the film product to slide toward or away from the film product. In order to facilitate the adjustment of the sliding of the clamping strip 4 located above the film product, the adjusting member includes a screw rod 17 threadedly penetrated on the positioning seat 3, and the rotation axis of the screw rod 17 is arranged in the vertical direction. The screw rod 17 is rotatably connected to the clamping strip 4 located above the film product, and a through hole 18 for the corresponding screw rod 17 to movably pass through is opened on the connecting strip 7 located above the film product.

[0040] When the film product needs to be placed between the two clamping strips 4 of the positioning seat 3, the screw 17 is rotated so that the screw 17 drives the clamping strip 4 above the film product away from the clamping strip 4 below, so that a large opening is formed between the corresponding two clamping strips 4 to facilitate the film product to pass through. Then the screw 17 is rotated in the opposite direction so that the ball 5 of the upper clamping strip 4 abuts against the film product, thereby realizing the positioning of the film product. The screw connection between the screw 17 and the positioning seat 3 is used to lock the film product so that the clamping strip 4 will not move when the screw 17 does not rotate, and the film product can be adapted to film products of different thicknesses.

[0041] The implementation principle of the embodiment of the present invention is as follows: when in use, the edges of the film product on both sides are respectively located between the two clamping bars 4 on the corresponding side, and the ball 5 on the clamping bar 4 abuts against the film product; when the laser cutting mechanism needs to cut the film product, the laser cutting head 13 moves toward the middle of the cutting frame 12, away from the initial position, so that the first repulsive magnet 81 is aligned with the second repulsive magnet 82, and the first repulsive magnet 81 repels the second repulsive magnet 82 from sliding in a direction away from the first repulsive magnet 81, and pushes the connecting bar 7 located above the film product through the support rod 14. Press down, so that the connecting strip 7 located above the film product drives the corresponding rack 92 to move, and then drives the gear 91 to rotate. The gear 91 drives the rack 92 on the connecting strip 7 located below the film to slide, so that the two connecting strips 7 on the positioning seat 3 drive the corresponding multiple limiting rods 6 to approach the ball 5, and the anti-slip pads 10 on the limiting rods 6 abut against the ball 5, thereby limiting the rotation of the ball 5, so that the ball 5 on the upper and lower clamping strips 4 clamps the edge of the film product in place, thereby facilitating laser cutting of the film product and preventing the film product from shifting or curling during cutting.

[0042] When a section of the film product is cut, the laser cutting head 13 quickly returns to the initial position, that is, any end of the cutting frame 12, so that the first repelling magnet 81 and the second repelling magnet 82 are misaligned. At this time, the connecting bar 7 slides in the direction away from the clamping bar 4 under the elastic force of the corresponding multiple springs 11, so that the anti-slip pads 10 on the multiple limiting rods 6 are away from the corresponding balls 5, so that the balls 5 can roll. The balls 5 have little resistance to the transmission of the film product, which facilitates the rapid transmission of the film product, so that the part to be cut can be quickly moved to the bottom of the laser cutting head 13 for cutting, and continuous processing is achieved in this reciprocating manner, which helps to ensure processing efficiency.

[0043] The above are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A high-precision positioning system for laser die-cutting, comprising a frame (1) and a working platform (2) arranged on the frame (1), characterized in that: The device also comprises a positioning clamping mechanism arranged on the working platform (2), the positioning clamping mechanism comprising a positioning seat (3) arranged on both sides of the working platform (2) and two clamping strips (4) arranged on the positioning seat (3), the two clamping strips (4) on the positioning seat (3) are respectively located on the upper and lower sides of the edge of the film product, and a plurality of balls (5) are rollingly embedded on the side of the two clamping strips (4) on the positioning seat (3) close to the film product, and the balls (5) are used to abut against the film product, and a limiting component for limiting the rolling of the plurality of balls (5) on the corresponding two clamping strips (4) is arranged on the positioning seat (3), and the limiting component comprises a sliding A limiting rod (6) is inserted into the clamping strip (4), a connecting strip (7) is slidably arranged on the clamping strip (4), a pushing member is arranged on the clamping strip (4), a pressing member (8) is arranged on the frame (1), and a synchronizing member (9) is arranged on the positioning seat (3), the limiting rod (6) corresponds to the ball (5) one by one, the sliding direction of the limiting rod (6) is arranged along the vertical direction, the limiting rod (6) is used to abut against the corresponding ball (5) to limit the rolling of the corresponding ball (5), the connecting strip (7) is located on the side of the corresponding clamping strip (4) away from the film product, and the end of the limiting rod (6) away from the corresponding ball (5) is in contact with the corresponding connecting strip (7). The positioning system (1) is connected to the frame (1), wherein the pushing member is used to push the corresponding connecting strip (7) to drive the plurality of limiting rods (6) to slide in a direction away from the clamping strip (4), the pressing member (8) is used to drive the connecting strip (7) located above the film product to move in the direction of the film product, and the synchronizing member (9) is used to make the two connecting strips (7) on the positioning seat (3) slide synchronously in a direction close to or away from the film product. The positioning system also includes a laser cutting mechanism arranged on the frame (1), and the laser cutting mechanism includes a cutting frame (12) mounted on the frame (1), a laser cutting head (13) slidably arranged on the cutting frame (12), and a laser cutting head (13) arranged on the cutting frame (12). The invention relates to a driving source, wherein a support rod (14) is arranged on the connecting strip (7) located above the film product, and the pressing member (8) comprises a first repulsive magnet (81) arranged on the laser cutting head (13) and a second repulsive magnet (82) arranged on the support rod (14), wherein the first repulsive magnet (81) is located above the second repulsive magnet (82), and the first repulsive magnet (81) is used to drive the second repulsive magnet (82) to move in a direction away from the first repulsive magnet (81), and when the laser cutting head (13) is located at an initial position at the end of the cutting frame (12), the first repulsive magnet (81) and the second repulsive magnet (82) are misaligned.

2. A high-precision positioning system for laser die-cutting according to claim 1, characterized in that: An anti-skid pad (10) is provided at one end of the limiting rod (6) close to the corresponding ball (5), and the anti-skid pad (10) is used to abut against the corresponding ball (5).

3. The high-precision positioning system for laser die-cutting according to claim 1, characterized in that: The pushing member comprises a spring (11) for pushing the connecting strip (7) to drive the corresponding plurality of limiting rods (6) to slide in a direction away from the clamping strip (4); one end of the spring (11) is arranged on the corresponding clamping strip (4), and the other end is arranged on the corresponding connecting strip (7).

4. A high-precision positioning system for laser die-cutting according to claim 3, characterized in that: The sliding direction of the laser cutting head (13) is parallel to the arrangement direction of the two positioning seats (3), the driving source is used to drive the laser cutting head (13) to slide, and the repulsive force between the first repulsive magnet (81) and the second repulsive magnet (82) is greater than the elastic force of the spring (11).

5. A high-precision positioning system for laser die-cutting according to claim 4, characterized in that: The support rods (14) on both sides are commonly sleeved with a sleeve (15), the second repulsive magnet (82) is arranged on the sleeve (15) on the support rod (14), and the second repulsive magnets (82) on the support rods (14) on both sides are connected.

6. A high-precision positioning system for laser die-cutting according to claim 5, characterized in that: Distance meters (16) for measuring the distance from the edge of the film on the corresponding side to the edge of the working platform (2) are arranged on opposite sides of the working platform (2); the positioning seat (3) is slidably arranged on the working platform (2); the sliding direction of the positioning seat (3) is parallel to the arrangement direction of the two positioning seats (3); the sleeve (15) is fixed to the support rod (14) on one side and is slidably connected to the support rod (14) on the other side; a sliding member for driving the positioning seat (3) to slide is arranged on the frame (1); the distance meter (16) and the sliding member are both wirelessly connected to an external controller.

7. The high-precision positioning system for laser die-cutting according to claim 1, characterized in that: The synchronous member (9) comprises a gear (91) and a rack (92); the gear (91) is rotatably arranged on the positioning seat (3); the rotation axis of the gear (91) is parallel to the arrangement direction of the two positioning seats (3); the rack (92) corresponds to the connecting bar (7) on the positioning seat (3) one by one; the rack (92) is arranged on the corresponding connecting bar (7); the length direction of the rack (92) is parallel to the sliding direction of the connecting bar (7); the gear (91) is located between the two racks (92) on the corresponding side and is respectively meshed with the corresponding two racks (92).

8. A high-precision positioning system for laser die-cutting according to any one of claims 1 to 7, characterized in that: The clamping strip (4) located above the film product is slidably arranged on the corresponding positioning seat (3) along the vertical direction, and the positioning seat (3) is provided with an adjusting member for adjusting the sliding of the clamping strip (4) located above the film product.

9. A high-precision positioning system for laser die-cutting according to claim 8, characterized in that: The adjusting member comprises a screw rod (17) threadedly penetrated on the positioning seat (3), the rotation axis of the screw rod (17) is arranged along the vertical direction, and the screw rod (17) is rotationally connected to a clamping strip (4) located above the film product.

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