An automatic wrapping film clamp

Abstract

This utility model discloses an automatic wrapping film fixture, comprising: a main body, a contouring carrier disposed on the main body, and a wrapping mechanism. A wrapping film is placed inside the contouring carrier, and a product is placed on the wrapping film. The wrapping mechanism includes an upper film preparation assembly, a left film preparation assembly, and a right film preparation assembly. These assemblies respectively perform wrapping operations on the upper, left, and right sides of the product. Each assembly includes a driving component and a contouring pressure block connected to the driving component. The contouring pressure block is adapted to the shape of the product, and the driving component drives the contouring pressure block to press the wrapping film tightly against the product. This utility model uses a wrapping mechanism that mimics the shape of artificial fingers to wrap the product, and a limiting mechanism to fix the position of the wrapping film and the product, thereby ensuring wrapping quality and efficiency.

Description

Technical Field

[0001] This utility model relates to the field of film wrapping fixture technology, and in particular to an automatic film wrapping fixture. Background Technology

[0002] Currently, with the rapid popularization and application of digital products, more and more products are being launched. Among them, the power adapter is an indispensable accessory. The power adapter is used to charge digital products and ensure their normal use. Assembly and screen protector application are two key steps in the production of power adapters. Quick assembly can effectively speed up production efficiency, while applying a screen protector to the power adapter can play a protective role, preventing the surface of the power adapter from being scratched and ensuring that the power adapter shell is intact.

[0003] The main function of existing wrapping fixtures is to achieve rapid positioning of the wrapping film, but the wrapping quality of power adapters is not ideal and the work efficiency is low. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the existing technology and provide an automatic wrapping film clamp.

[0005] The objective of this utility model is achieved through the following technical solution:

[0006] An automatic wrapping film fixture includes: a main body, a contouring carrier disposed on the main body, and a wrapping mechanism. A wrapping film is placed inside the contouring carrier, and a product is placed on the wrapping film. The wrapping mechanism includes an upper film preparation assembly, a left film preparation assembly, and a right film preparation assembly. The upper film preparation assembly, the left film preparation assembly, and the right film preparation assembly respectively perform wrapping operations on the upper, left, and right sides of the product. Each of the upper film preparation assembly, the left film preparation assembly, and the right film preparation assembly includes a driving component and a contouring pressure block connected to the driving component. The contouring pressure block is adapted to the shape of the product, and the driving component can drive the contouring pressure block to press the wrapping film tightly against the product.

[0007] In one embodiment, a workbench is provided on the upper surface of the main housing, and the contouring carrier and the wrapping mechanism are both provided on the workbench. A positioning seat is provided inside the contouring carrier. The contouring carrier is arranged along the circumferential direction of the positioning seat, and the shape of the contouring carrier is adapted to the shape of the product. The wrapping film and the product are placed on the positioning seat in sequence.

[0008] In one embodiment, the upper surface of the contour carrier is provided with positioning blocks for positioning the upper part of the product. There are multiple positioning blocks, which are respectively located at the four corners of the product, and the shape of the positioning blocks is adapted to the shape of the corner of the product.

[0009] In one embodiment, a vacuum adsorption assembly is provided below the positioning seat. The vacuum adsorption assembly includes an adsorption hole on the positioning seat and a vacuum pumping device connected to the adsorption hole.

[0010] In one embodiment, the finishing upper film assembly, the finishing left film assembly, and the finishing right film assembly are respectively located on three outer sides of the product. The worktable is provided with a fixed seat relative to each of the finishing upper film assembly, the finishing left film assembly, and the finishing right film assembly. The driving component is a cylinder, which is fixed on the fixed seat. The piston rod of the cylinder is connected to the contouring pressure block. The contouring pressure block is positioned relative to one side of the product. The contouring pressure block includes an upper pressing part and a side pressing part. The upper pressing part abuts against the upper side of the product, and the side pressing part abuts against the side of the product.

[0011] In one embodiment, the main housing is hollow, and a limiting mechanism is provided inside the main housing relative to the positioning seat. The limiting mechanism includes a fixing plate located below the positioning seat, a fixing rod passing through the fixing plate, and a hook located on one side of the fixing rod. The fixing plate is mounted inside the main housing. The upper end of the fixing rod is connected to the bottom of the positioning seat, and the lower end of the fixing rod has a connecting part. The hook is located on one side of the connecting part. A fixing platform for fixing the hook is provided inside the main housing. A sliding groove is provided on the fixing platform, and the hook is limited to the sliding groove. A rotating shaft is rotatably provided on the inner wall of the sliding groove, and the hook can rotate relative to the rotating shaft. The side of the hook facing the connecting part is a hooking part, which is used to hook the connecting part. A positioning groove is provided on the worktable relative to the positioning seat, and the positioning seat can pass through the positioning groove. When the product is pressed down, the positioning seat moves down to hook and fix the connecting part with the hook.

[0012] In one embodiment, a limit switch is connected to the side of the hook away from the connecting part, and the end of the limit switch away from the hook extends out of the main housing body. The limit switch is used to indicate whether the positioning seat is stuck.

[0013] In one embodiment, the bottom of the positioning seat is provided with an elastic mechanism for resetting the positioning seat. The elastic mechanism includes an upper elastic rod, a sleeve, a spring located inside the sleeve, and a lower elastic rod. The upper end of the upper elastic rod is connected to the bottom of the positioning seat, and the lower end of the upper elastic rod passes through the fixing plate and is inserted into the sleeve. The lower end of the spring is fixed to the bottom of the sleeve, and the upper end of the spring is connected to a push plate. Both the push plate and the spring can slide along the length direction of the sleeve. The lower end of the upper elastic rod is connected to the push plate, and the upper end of the lower elastic rod is connected to the bottom of the sleeve. The lower end of the lower elastic rod is set at a certain distance from the inner bottom of the main housing. The spring provides elastic force to the positioning seat. When the positioning seat is pressed down and then released, the positioning seat automatically resets due to the elastic force of the spring.

[0014] In one embodiment, the main housing is provided with a power supply component and a PLC controller. The power supply component is used to supply power to the cylinders, and the PLC controller is electrically connected to the three cylinders respectively. The PLC controller is also electrically connected to the limit switch.

[0015] In one embodiment, the workbench is provided with two start buttons, both of which are connected to the power supply assembly.

[0016] Compared with the prior art, the present invention has at least the following advantages:

[0017] 1. This utility model discloses an automatic wrapping film clamp. By setting a wrapping mechanism and a limiting mechanism, during the wrapping process, the wrapping film and the product are placed sequentially on the positioning seat. The product is gently pressed down so that the positioning seat is downward, and the connecting part is hooked and fixed. At this time, check whether the signal of the limit switch is "1". When the signal of the limit switch is "1", press the two start buttons with both hands to make the PLC controller control the upper film assembly to press the wrapping film to cover one side of the product. Then, control the left and right film assemblies to press the wrapping film to cover the two outer sides of the product. Finally, manually attach the seal of the wrapping film and press down on the positioning seat to reset the positioning seat, thereby completing the wrapping operation of the product.

[0018] 2. The automatic wrapping film fixture of this utility model improves the efficiency of automatic wrapping by setting a positioning seat and a contour carrier to quickly position the wrapping film and the product. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the embodiments will be briefly described below.

[0020] Figure 1 A schematic diagram of the structure of an automatic wrapping film clamp provided by this utility model;

[0021] Figure 2 A schematic diagram of the positioning seat and contour carrier in an automatic wrapping film fixture for positioning the wrapping film and product, provided by this utility model;

[0022] Figure 3 A schematic diagram of the limiting mechanism in an automatic wrapping film clamp provided by this utility model;

[0023] Figure 4 A partial cross-sectional view of the limiting mechanism in an automatic wrapping film clamp provided by this utility model;

[0024] Figure 5 A partial cross-sectional view of the elastic mechanism in an automatic wrapping film clamp provided by this utility model;

[0025] Figure 6 This is a cross-sectional view of the main box in an automatic wrapping film clamp provided by this utility model.

[0026] Figure Descriptions: 10. Main housing; 11. Worktable; 111. Positioning groove; 20. Contouring carrier; 21. Positioning block; 30. Wrapping mechanism; 31. Upper film assembly; 32. Left film assembly; 33. Right film assembly; 34. Contouring pressure block; 341. Upper pressing part; 342. Side pressing part; 35. Cylinder; 36. Fixing seat; 40. Wrapping film; 50. Product; 60. Positioning seat; 70. Vacuum adsorption assembly; 71. Adsorption hole; 72. Vacuum pumping equipment; 8 0. Limiting mechanism; 81. Fixing plate; 82. Fixing rod; 821. Connecting part; 83. Hook; 831. Hook holding part; 8311. Guide surface; 84. Fixing platform; 841. Slide groove; 842. Rotating shaft; 90. Limit switch; 100. Elastic mechanism; 101. Upper elastic rod; 102. Sleeve; 103. Spring; 104. Lower elastic rod; 105. Push plate; 110. Power supply assembly; 120. PLC controller; 130. Start button; 140. Support leg. Detailed Implementation

[0027] To facilitate understanding of this utility model, a more comprehensive description of this utility model will be given below with reference to the accompanying drawings.

[0028] An automatic wrapping film clamp, as described in the reference Figure 1The system includes a main housing 10, a contouring carrier 20 mounted on the main housing 10, and a wrapping mechanism 30. A wrapping film 40 is placed inside the contouring carrier 20, and a product 50 is placed on the wrapping film 40. The wrapping mechanism 30 includes an upper film assembly 31, a left film assembly 32, and a right film assembly 33, which respectively perform wrapping operations on the upper, left, and right sides of the product 50. Each of the upper film assembly 31, left film assembly 32, and right film assembly 33 includes a driving component and a contouring pressure block 34 connected to the driving component. The contouring pressure block 34 is adapted to the shape of the product 50, and the driving component can drive the contouring pressure block 34 to press the wrapping film 40 tightly against the product 50, thereby achieving the wrapping operation of the product 50.

[0029] Furthermore, referring to Figure 1 and Figure 2 The upper surface of the main housing 10 is provided with a worktable 11, on which the contour carrier 20 and the wrapping mechanism 30 are both located. The contour carrier 20 contains a positioning seat 60, which is arranged circumferentially around the positioning seat 60, and the shape of the contour carrier 20 is adapted to the shape of the product 50. The size and shape of the positioning seat 60 are adapted to the size and shape of the product 50. The wrapping film 40 and the product 50 are placed sequentially on the positioning seat 60, and the contour carrier 20 fixes the product 50 to the positioning seat 60 along the periphery of the product 50 for subsequent wrapping operations.

[0030] Furthermore, referring to Figure 1 and Figure 2 The upper surface of the contour carrier 20 is provided with positioning blocks 21 for positioning the upper part of the product 50. Multiple positioning blocks 21 are provided, and each positioning block 21 is located at one of the four corners of the product 50. The shape of the positioning blocks 21 is adapted to the shape of the corners of the product 50. Since the product 50 has a certain thickness, after the product 50 is fixed to the positioning seat 60, the upper part of the product 50 is located outside the positioning seat 60 and the contour carrier 20. By adding positioning blocks 21 to position the periphery of the product 50, the fixing effect of the product 50 is strengthened.

[0031] Furthermore, referring to Figure 3 A vacuum adsorption component 70 is provided below the positioning seat 60. The vacuum adsorption component 70 includes an adsorption hole 71 on the positioning seat 60 and a vacuum pumping device 72 connected to the adsorption hole 71. By placing the wrapping film 40 and the product 50 on the positioning seat 60 in sequence, the vacuum pumping device 72 performs vacuuming, and the adsorption hole 71 draws air to adsorb and fix the wrapping film 40 and the product 50, so as to achieve the effect of quickly positioning the wrapping film 40 and accurately attaching the wrapping film 40, preventing the wrapping film 40 from being misaligned, improving the wrapping efficiency and quality, and ensuring the stability of the wrapping process.

[0032] Furthermore, referring to Figure 1 The upper film assembly 31, the left film assembly 32, and the right film assembly 33 are located on the three outer sides of the product 50, respectively. A fixed seat 36 is provided on the worktable 11 at a position relative to each of the upper film assembly 31, left film assembly 32, and right film assembly 33. The driving component is a cylinder 35, which is fixed to the fixed seat 36. The piston rod of the cylinder 35 is connected to a contouring pressure block 34, which is positioned relative to one side of the product 50. The contouring block 34 is arranged in an inverted L shape. The contouring block 34 includes an upper pressing part 341 and a side pressing part 342. The upper pressing part 341 and the side pressing part 342 are integrally formed. The upper pressing part 341 abuts against the upper side of the product 50, and the side pressing part 342 abuts against the side of the product 50. The upper pressing part 341 and the side pressing part 342 are combined to form a right-angled contouring block 34, which presses the outer side of the wrapping film 40 so that the wrapping film 40 is tightly attached to the side and the upper side of the product 50. By setting up an upper film assembly 31, a left film assembly 32, and a right film assembly 33, each of which includes a contouring pressure block 34, the three contouring pressure blocks 34, in the form of contoured artificial fingers, perform a pressing and wrapping operation on the outside of the product 50. Specifically, the upper film assembly 31 attaches the wrapping film 40 to one side of the product 50, so that the wrapping film 40 is attached to the side and top of the product 50. The left film assembly 32 and the right film assembly 33 are used to press and attach the wrapping films 40 on both sides of the product 50. Finally, the wrapping films 40 are sealed manually, thereby completing the wrapping operation of the wrapping film 40 on the product 50. The contouring pressure blocks 34, in the form of contoured artificial fingers, improve the adhesion quality of the wrapping film 40.

[0033] Furthermore, referring to Figure 3 and Figure 4The main housing 10 is hollow. A limiting mechanism 80 is installed inside the main housing 10 relative to the positioning seat 60. The limiting mechanism 80 is used to fix the positions of the positioning seat 60 and the product 50, preventing the product 50 from shifting and affecting the wrapping operation. The limiting mechanism 80 includes a fixing plate 81 located below the positioning seat 60, a fixing rod 82 passing through the fixing plate 81, and a hook 83 located on one side of the lower end of the fixing rod 82. The fixing plate 81 is mounted inside the main housing 10, the upper end of the fixing rod 82 is fixedly connected to the bottom of the positioning seat 60, and the lower end of the fixing rod 82 has a connecting part 821. The hook 83 is located on one side of the connecting part 821. A fixing platform 84 for fixing the hook 83 is provided inside the main housing 10. A sliding groove 841 is provided on the fixing platform 84, and the hook 83 is confined within the sliding groove 841. A rotating shaft 842 is rotatably mounted on the inner wall of the sliding groove 841. The rotating shaft 842 passes through the side of the hook 83, allowing the hook 83 to rotate slightly relative to the rotating shaft 842. The side of the hook 83 facing the connecting part 821 is a hook-holding part 831, used to hook the connecting part 821. The upper surface of the hook-holding part 831 is provided with a guide surface 8311. The worktable 11 has a positioning groove 111 relative to the positioning seat 60. The positioning seat 60 can pass through the positioning groove 111. When the wrapping film 40 and the product 50 are placed on the positioning seat 60 in sequence, pressing down the product 50 causes the positioning seat 60 to pass through the positioning groove 111. The connecting part 821 reaches the upper part of the hook 83 and moves downward along the guide surface 8311 to the hooking part 831, so that the hook 83 hooks the connecting part 821, thereby locking the position of the positioning seat 60 and fixing the position of the wrapping film 40 and the product 50. The limiting mechanism 80 can control the downward position of the positioning seat 60 to a predetermined position. When the wrapping film 40 and the product 50 are pressed down to the predetermined position with the positioning seat 60, the hook 83 hooks and fixes with the connecting part 821 to lock the position of the positioning seat 60, preventing the wrapping film 40 and the product 50 from shifting and avoiding affecting the normal operation of the wrapping mechanism 30.

[0034] Furthermore, referring to Figure 3 and Figure 4A limit switch 90 is connected to the side of the hook 83 away from the connecting part 821. The end of the limit switch 90 away from the hook 83 extends out of the main housing 10. The limit switch 90 is used to indicate whether the positioning seat 60 is stuck. When the hook 83 is not engaged by the connecting part 821, the hook 83 does not move. When the positioning seat 60 moves downward to the predetermined position, the connecting part 821 moves downward and engages with the hook 83. The hook 83 rotates slightly relative to the rotating shaft 842. The limit switch 90 is connected to the hook 83 and can receive the movement signal of the hook 83, so as to change the signal of the limit switch 90. When the signal of the limit switch 90 is "1", it means that the product 50 is placed normally, the connecting part 821 is hooked and fixed with the hook 83, and the wrapping mechanism 30 can perform the wrapping operation; when the signal of the limit switch 90 is "0", it means that the product 50 is not placed flat, the connecting part 821 may not be hooked and fixed with the hook 83, and the wrapping mechanism 30 stops working to avoid pinching and damaging the product 50.

[0035] Furthermore, referring to Figure 5 When it is necessary to unlock the positioning seat 60 to remove the product 50, the positioning seat 60 needs to be raised to return to its original position. Therefore, the bottom of the positioning seat 60 is provided with an elastic mechanism 100 for resetting the positioning seat 60. One end of the elastic mechanism 100 is connected to the bottom of the positioning seat 60, and the other end of the elastic mechanism 100 passes through the fixing plate 81 and is set at a certain distance from the inner bottom of the main box 10. The elastic mechanism 100 includes an upper elastic rod 101, a sleeve 102, a spring 103 located inside the sleeve 102, and a lower elastic rod 104. The upper end of the upper elastic rod 101 is connected to the bottom of the positioning seat 60, and the lower end of the upper elastic rod 101 passes through the fixing plate 81 and is installed inside the sleeve 102. The lower end of the spring 103 is fixed to the bottom of the sleeve 102, and the upper end of the spring 103 is connected to a push plate 105. Both the push plate 105 and the spring 103 can slide along the length of the sleeve 102. The lower end of the upper elastic rod 101 is connected to the push plate 105. The upper end of the lower elastic rod 104 is connected to the bottom of the sleeve 102, and the lower end of the lower elastic rod 104 is positioned at a certain distance from the inner bottom of the main housing 10. The elastic mechanism 100 is provided with elasticity by the spring 103. When the positioning seat 60 is pressed down, the upper elastic rod 101 moves downward to compress the spring 103 in the sleeve 102 and pushes the lower elastic rod 104 downward until it abuts against the inner bottom of the main housing 10. When the positioning seat 60 is released, the spring 103 will provide elastic force to the positioning seat 60, causing the positioning seat 60 to move upward, thereby achieving the effect of automatic reset.

[0036] Furthermore, referring to Figure 5 There are two elastic mechanisms 100, which are located at the bottom of the positioning seat 60 near the two outer edges. By setting two elastic mechanisms 100, the positioning seat 60 can be quickly reset when it needs to be reset.

[0037] Reference Figure 6 The main housing 10 houses a power supply assembly 110 and a PLC controller 120. The power supply assembly 110 supplies power to the cylinders 35 to ensure the normal film coating operation of the upper film assembly 31, the left film assembly 32, and the right film assembly 33. The PLC controller 120 is electrically connected to the three cylinders 35 and is also electrically connected to the limit switch 90.

[0038] Furthermore, referring to Figure 6 The workbench 11 is equipped with two start buttons 130, which are connected to the power supply assembly 110. Pressing both start buttons 130 simultaneously triggers the power supply assembly 110 to supply power to the cylinder 35. By providing two start buttons 130 for operation with both hands, the coating mechanism 30 is designed to prevent injury to workers from being pinched.

[0039] Furthermore, referring to Figure 6 The bottom of the main box 10 is provided with a support bracket 140. The support bracket 140 is used to raise the height of one side of the main box 10 so that the line of sight of the workers is parallel when placing the wrapping film 40 and the product 50, thereby reducing the fatigue of the workers.

[0040] During the wrapping process, first place the wrapping film 40 on the positioning seat 60, then place the product 50 on top of the wrapping film 40, and gently press the product 50 downwards to make the positioning seat 60 lower, so that the connecting part 821 and the hook 83 hook and fix it. At this time, check whether the signal of the limit switch 90 is "1". When the signal of the limit switch 90 is "1", press the two start buttons 130 with both hands to make the PLC controller 120 control the upper film assembly 31 to press the wrapping film 40 to cover one side of the product 50, and then control the left film assembly 32 and the right film assembly 33 to press the wrapping film 40 to cover the two outer sides of the product 50. Finally, manually attach the seal of the wrapping film 40 and press down on the positioning seat 60 to reset the positioning seat 60, thereby completing the wrapping operation of the product 50.

[0041] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. An automatic wrapping film clamp characterized by, include: The package includes a main housing (10), a contour carrier (20) mounted on the main housing (10), and a wrapping mechanism (30). A wrapping film (40) is placed inside the contour carrier (20), and a product (50) is placed on the wrapping film (40). The wrapping mechanism (30) includes an upper film preparation assembly (31), a left film preparation assembly (32), and a right film preparation assembly (33). (33) The upper, left and right sides of the product (50) are coated respectively. The upper coating assembly (31), the left coating assembly (32) and the right coating assembly (33) each include a driving member and a contouring block (34) connected to the driving member. The contouring block (34) is adapted to the shape of the product (50). The driving member can drive the contouring block (34) to press the coating film (40) tightly against the product (50).

2. An automatic wrapping film clamp according to claim 1, characterized in that, The upper surface of the main box (10) is provided with a worktable (11). The contour carrier (20) and the wrapping mechanism (30) are both located on the worktable (11). The contour carrier (20) is provided with a positioning seat (60). The contour carrier (20) is arranged along the circumferential direction of the positioning seat (60), and the shape of the contour carrier (20) is adapted to the shape of the product (50). The wrapping film (40) and the product (50) are placed on the positioning seat (60) in sequence.

3. An automatic wrapping film clamp according to claim 2, characterized in that, The upper surface of the contour carrier (20) is provided with positioning blocks (21) for positioning the upper part of the product (50). There are multiple positioning blocks (21), and the multiple positioning blocks (21) are located at the four corners of the product (50), and the shape of the positioning blocks (21) is adapted to the shape of the corner of the product (50).

4. An automatic wrapping film clamp according to claim 2, characterized in that, A vacuum adsorption assembly (70) is provided below the positioning seat (60). The vacuum adsorption assembly (70) includes an adsorption hole (71) provided on the positioning seat (60) and a vacuum pumping device (72) connected to the adsorption hole (71).

5. An automatic wrapping film clamp according to claim 2, characterized in that, The upper film assembly (31), the left film assembly (32), and the right film assembly (33) are located on the three outer sides of the product (50). The worktable (11) is provided with a fixed seat (36) relative to the upper film assembly (31), the left film assembly (32), and the right film assembly (33). The driving component is a cylinder (35), which is fixed on the fixed seat (36). The piston rod of the cylinder (35) is connected to the contouring block (34). The contouring block (34) is positioned relative to one side of the product (50). The contouring block (34) includes an upper pressing part (341) and a side pressing part (342). The upper pressing part (341) abuts against the upper side of the product (50), and the side pressing part (342) abuts against the side of the product (50).

6. An automatic wrapping film clamp according to claim 5, characterized in that The main housing (10) is hollow. A limiting mechanism (80) is provided inside the main housing (10) relative to the positioning seat (60). The limiting mechanism (80) includes a fixing plate (81) located below the positioning seat (60), a fixing rod (82) passing through the fixing plate (81), and a hook (83) located on one side of the fixing rod (82). The fixing plate (81) is mounted inside the main housing (10). The upper end of the fixing rod (82) is connected to the bottom of the positioning seat (60), and the lower end of the fixing rod (82) has a connecting part (821). The hook (83) is located on one side of the connecting part (821). A fixing platform (84) for fixing the hook (83) is provided inside the main housing (10). A sliding groove (841) is provided on the fixed platform (84). The hook (83) is limited to the sliding groove (841). A rotating shaft (842) is rotatably provided on the inner wall of the sliding groove (841). The hook (83) can rotate relative to the rotating shaft (842). The side of the hook (83) facing the connecting part (821) is a hooking part (831). The hooking part (831) is used to hook the connecting part (821). A positioning groove (111) is provided on the worktable (11) relative to the positioning seat (60). The positioning seat (60) can be inserted into the positioning groove (111). When the product (50) is pressed down, the positioning seat (60) moves down to hook and fix the connecting part (821) with the hook (83).

7. An automatic wrapping film clamp according to claim 6, characterized in that A limit switch (90) is connected to the side of the hook (83) away from the connecting part (821). The end of the limit switch (90) away from the hook (83) extends out of the main housing (10). The limit switch (90) is used to indicate whether the positioning seat (60) is stuck.

8. An automatic wrapping film clamp according to claim 6, characterized in that, The bottom of the positioning seat (60) is provided with an elastic mechanism (100) for resetting the positioning seat (60). The elastic mechanism (100) includes an upper elastic rod (101), a sleeve (102), a spring (103) located inside the sleeve (102), and a lower elastic rod (104). The upper end of the upper elastic rod (101) is connected to the bottom of the positioning seat (60), and the lower end of the upper elastic rod (101) passes through the fixing plate (81) and is inserted into the sleeve (102). The lower end of the spring (103) is fixed to the bottom of the sleeve (102), and the upper end of the spring (103) is connected to the bottom of the positioning seat (60). A push plate (105) is connected, and both the push plate (105) and the spring (103) can slide along the length direction of the sleeve (102). The lower end of the upper elastic rod (101) is connected to the push plate (105), and the upper end of the lower elastic rod (104) is connected to the bottom of the sleeve (102). The lower end of the lower elastic rod (104) is set at a certain distance from the inner bottom of the main box (10). The spring (103) provides elastic force to the positioning seat (60). When the positioning seat (60) is pressed down and then released, the positioning seat (60) automatically resets due to the elastic force of the spring (103).

9. An automatic wrapping film clamp according to claim 7, characterized in that, The main housing (10) is equipped with a power supply assembly (110) and a PLC controller (120). The power supply assembly (110) is used to supply power to the cylinder (35). The PLC controller (120) is electrically connected to the three cylinders (35) respectively, and the PLC controller (120) is also electrically connected to the limit switch (90).

10. An automatic wrapping film clamp according to claim 9, characterized in that, The workbench (11) is provided with two start buttons (130), both of which are connected to the power supply assembly (110).

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