Traction device and method for producing self-adhesive preservative film

Abstract

The traction device comprises a base, a releasing roller, a winding roller, a supporting roller, a lifting rod, a pulling roller, a winding mechanism and a stretching mechanism, the winding mechanism achieves rotation of the winding roller through a first belt wheel, a second belt wheel and a transmission belt, and winding work of the preservative film is completed. The stretching mechanism accurately controls lifting of a pull roller through cooperation of a lifting rod and a hexagonal frame so as to uniformly stretch the preservative film and ensure the consistency of the thickness of the preservative film, the traction operation stably clamps the edge of the preservative film and prevents deviation and wrinkles, and the smoothing operation drives a moving plate to perform arc-shaped reciprocating swing through an L-shaped tooth plate, so that the smoothness of the preservative film is ensured. The arc-shaped strip is in close contact with the surface of the winding roller, smoothing treatment of the preservative film is achieved, the winding quality is ensured, and efficient and uniform preservative film production is achieved through the steps of winding, stretching, traction and smoothing.

Description

Technical Field

[0001] The invention relates to the technical field of traction devices for producing self-adhesive cling film, in particular to a traction device and a method for producing self-adhesive cling film. Background Art

[0002] Self-adhesive cling film is mainly made of polyethylene (PE) or polyvinyl chloride (PVC). These two materials have good transparency, toughness and self-adhesion. As a commonly used packaging material, self-adhesive cling film is widely used in food preservation, daily household, industrial packaging and other fields. It can effectively seal the packaged objects and prevent the penetration of moisture, odor and oxygen. During the production process of cling film, the resin is melted and plasticized by an extruder to be extruded into a thin-walled tube. Then, under the action of a traction device, the polymer has a better flow state at this time and is inflated to the required thickness by compressed air. After cooling and shaping, it becomes a cling film, and then the produced cling film is wrapped around the material shaft for use.

[0003] The existing Chinese patent with announcement number CN115947159B includes: a main unit, a discharge unit, a pressure unit and a limit unit; the main unit includes: a support table, mounting side plates fixedly arranged on both sides of the support table, a lower pinching roller rotatably arranged on the mounting side plates, and a first motor installed on one side of the mounting side plates for driving the lower pinching roller to rotate; the discharge unit includes: a discharge rack fixed to the support table by a first connecting bracket, and a winding roller arranged on the discharge rack.

[0004] When the above device is in use, the automatic winding of the winding roller is completed through the cooperation of the limit roller and the lower pinch roller. When the winding reaches the specified thickness, the winding film can be automatically cut off by the cutting component, and the unloading work of the winding roller is achieved by adjusting the distance between the limit roller and the lower pinch roller. However, in actual use, it is difficult for the guide roller to stretch the cling film, which can easily cause wrinkles and uneven thickness of the cling film during the winding process, affecting the quality of the cling film. Therefore, it is difficult to stretch the cling film during the winding process.

[0005] For this reason, we propose a traction device and method for producing a self-adhesive cling film. Summary of the invention

[0006] The object of the present invention is to provide a traction device and method for producing a self-adhesive cling film, which has the advantage that the cling film is difficult to be stretched during the winding process, and solves the problems in the background technology.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a traction device for producing self-adhesive cling film, comprising a base, one end of the base is rotatably connected to a release roller for releasing the cling film through an external bracket, and winding rollers for winding the cling film are penetrated and rotatably connected at two symmetrical positions on both sides of the base away from one end of the release roller, and a supporting roller for supporting the bottom cling film is rotatably connected to the base near one end of the release roller through an external bracket, and the ends of the two rectangular blocks are provided with limiting grooves, and the inner walls of the limiting grooves on both sides are movably connected to lifting rods for lifting and moving, and the opposite surfaces of the ends of the two lifting rods are penetrated and rotatably connected to pulling rollers driven by a power mechanism, and the pulling rollers are provided with a winding mechanism for driving the winding roller to wind the cling film and a stretching mechanism for driving the pulling roller to stretch the cling film.

[0008] Preferably, the winding mechanism includes a pulling roller with one end coaxially fixedly connected to a first pulley, and the winding roller with one end coaxially fixedly connected to a second pulley at a position corresponding to the first pulley, and the outer contours of the first pulley and the second pulley are provided with a transmission belt for driving the winding roller to rotate and wind up the cling film.

[0009] Preferably, the stretching mechanism includes a hexagonal frame coaxially fixed to the winding roller at symmetrical positions near both ends of the rectangular block, which pushes the pulling roller to move up and down, and the opposite surfaces of the lifting rods on both sides are rotatably connected to columnar blocks that roll with the outer contour of the hexagonal frame, and the opposite surfaces of the lifting rods on each side and the limit groove are fixedly connected to a first spring that guides the lifting rod to reset.

[0010] Preferably, an L-shaped plate is fixedly connected to the rectangular block close to one side of the transmission belt, a moving rod is penetrated and movably connected to the L-shaped plate, a pulling wheel for pulling the transmission belt is fixedly connected to one end of the moving rod close to the transmission belt, and one side of the transmission belt is sleeved on the outer contour of the pulling wheel, and a second spring is fixedly connected to the opposite surface of the pulling wheel and the L-shaped plate to guide the pulling wheel to reset.

[0011] Preferably, the rectangular block is provided with a smoothing mechanism for smoothing the cling film on the surface of the winding roller, the smoothing mechanism comprises two rectangular blocks, both opposite surfaces near the bottom ends are fixedly connected to arc frames, the inner walls of the arc frames on both sides are movably connected to a movable plate for arc motion, telescopic rods are fixedly connected at symmetrical positions at both ends of the movable plate, the ends of the telescopic rods are fixedly connected to an arc strip for smoothing the cling film on the surface of the winding roller, a third spring is sleeved on the outer contour of the two telescopic rods to guide the winding roller to reset, and both ends of the third spring on each side are respectively fixedly connected to the movable plate and the arc strip.

[0012] Preferably, a track plate is fixedly connected to one side of the base close to the rectangular block, and the inner wall of the track plate is movably connected to an L-shaped toothed plate that pushes the movable plate to perform an arc movement, and one end of the bottom side of the movable plate close to the release roller is fixedly connected to an arc-shaped toothed plate that meshes with the L-shaped toothed plate for transmission, and the end of the movable rod away from the pull wheel is fixedly connected to a fixed plate that pushes the L-shaped toothed plate to perform horizontal movement.

[0013] Preferably, support plates are sleeved on both ends of the pulling roller at symmetrical positions, and movable grooves sleeved on the rotating shaft of the support roller are opened at the ends of the support plates on both sides away from the pulling roller, and rectangular through grooves are opened on the symmetrical positions of the two support plates, and the inner walls of the rectangular through grooves on both sides are movably connected with moving blocks, and one side of the opposite surfaces of the two moving blocks is fixedly connected with an upper clamping plate for supporting the edge position of the cling film, and a support groove is opened on the side of the moving block away from the upper clamping plate, and the inner walls of the support grooves on both sides are movably connected with lower clamping plates for clamping the edge position of the cling film.

[0014] Preferably, the pulling roller is coaxially fixed with elliptical plates at symmetrical positions at both ends of the supporting plate, and the two elliptical plates are provided with elliptical grooves for pulling the moving block to move back and forth, and the opposite back surfaces of the two moving blocks are fixedly connected with pull rods, and the ends of the pull rods away from the moving blocks are respectively penetrated to the inner walls of the adjacent elliptical grooves and movably connected, and the opposite back surfaces of the two support plates are fixedly connected with n-shaped frames, and each side of the n-shaped frames is provided with a parallelogram groove for pulling the lower clamping plate to move back and forth, and each lower clamping plate is fixedly connected with a slider on one side close to the n-shaped frame, and the slider penetrates to the inner wall of the parallelogram groove and is movably connected.

[0015] A traction method for producing a self-adhesive cling film comprises the following steps: S1. Rewinding the cling film: guiding the cling film to the surface of the rewinding roller through the release roller, ensuring that the starting end of the cling film is firmly adhered to the rewinding roller. During this process, the rewinding roller is driven to rotate by the motor, so that the rewinding roller rewinds the cling film; S2, stretching operation: adjusting the pulling roller to move up and down through the lifting rod, so that the pulling roller applies a uniform stretching force to the cling film, so that the cling film is fully stretched before rolling, ensuring the uniformity of the thickness of the cling film and improving the quality of the cling film; S3, traction operation: during the rolling process of the cling film, the clamping device stably clamps the edge of the cling film, and the moving block pulls the cling film, thereby preventing the cling film from shifting due to uneven traction, resulting in wrinkles at the edge of the cling film, and improving the flatness and consistency of the cling film; S4, smoothing operation: The L-shaped tooth plate drives the movable plate to swing back and forth in an arc shape, and the arc strip is in close contact with the surface of the winding roller, so that the movable plate drives the arc strip to smooth the cling film on the surface of the winding roller, ensuring the surface flatness of the cling film without wrinkles, thereby improving the quality of the cling film winding.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. Through the coordinated work of the release roller and the winding roller, the release and winding of the cling film can be carried out in parallel, thereby shortening the production cycle, reducing the frequency of manual intervention, significantly improving the overall production efficiency, and meeting the needs of large-scale production.

[0017] Second, by setting up a stretching mechanism and adjusting the pulling roller to move up and down through the lifting rod, the pulling roller can stretch the cling film during the rolling process, thereby achieving uniform stretching of the cling film, ensuring the uniformity of the thickness of the cling film, avoiding wrinkles caused by uneven thickness during the rolling process of the cling film, and ensuring the quality stability of the finished product.

[0018] 3. Utilize the adaptive adjustment of the arc strip to always maintain close contact with the surface of the winding roller. Drive the movable plate to swing back and forth in an arc through the L-shaped tooth plate, so that the movable plate drives the arc strip to smooth the cling film on the surface of the winding roller, eliminating edge wrinkles and improving the smoothness of the cling film rolled by the winding roller.

[0019] Fourth, the edge of the cling film is clamped by the upper and lower clamping plates, so that the moving block can move to pull the cling film, further improving the smoothness of the cling film transportation, avoiding the cling film from shifting due to uneven traction, resulting in wrinkles at the edge of the cling film, and affecting the winding effect.

[0020] The coordinated use of the above-mentioned structure solves the problem that in actual use of the existing device, since it is difficult for the guide roller to stretch the cling film, wrinkles and uneven thickness of the cling film may occur during the winding process, affecting the quality of the cling film, and it is difficult to stretch the cling film during the winding process. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 This is a schematic diagram of the three-dimensional structure of the winding roller of the present invention; Figure 3 It is a schematic cross-sectional view of the three-dimensional structure of the rectangular block of the present invention; Figure 4 This is a schematic diagram of the three-dimensional structure of the support plate of the present invention; Figure 5 For the present invention Figure 4Schematic diagram of the structure at A in the middle; Figure 6 It is a schematic cross-sectional view of the three-dimensional structure of the part where the moving block of the present invention is located; Figure 7 This is a schematic diagram of the three-dimensional structure of the part where the movable plate of the present invention is located; Figure 8 This is a schematic diagram of the three-dimensional structure of the pulley of the present invention; Fig. 9 This is a schematic diagram of the three-dimensional structure of the slider of the present invention; Fig.10 The present invention is a schematic diagram of the process of producing and pulling the self-adhesive cling film.

[0022] In the figure: 1, base; 2, release roller; 3, rectangular block; 301, limit groove; 4, winding roller; 5, support roller; 6, lifting rod; 7, pulling roller; 8, first pulley; 9, second pulley; 10, transmission belt; 11, first spring; 12, columnar block; 13, hexagonal frame; 14, L-shaped plate; 15, moving rod; 16, pulling wheel; 161, second spring; 17, arc frame; 18, moving plate; 19, telescopic rod ; 20. Arc strip; 21. Third spring; 22. Track plate; 23. L-shaped tooth plate; 24. Arc tooth plate; 25. Fixed plate; 26. Support plate; 261. Rectangular through groove; 262. Movable groove; 27. Moving block; 271. Support groove; 28. Upper clamping plate; 29. ​​Lower clamping plate; 30. Pull rod; 31. Oval plate; 311. Oval groove; 32. N-shaped frame; 321. Parallelogram groove; 33. Slider. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] Embodiment 1:

[0025] See also Figures 1 to 10The present invention provides a technical solution: a traction device and method for producing self-adhesive cling film, comprising a base 1, one end of the base 1 is rotatably connected to a release roller 2 for releasing the cling film through an external bracket, and winding rollers 4 for winding the cling film are penetrated and rotatably connected on fixed axes at symmetrical positions on both sides of the base 1 away from one end of the release roller 2, and a supporting roller 5 for supporting the bottom cling film is rotatably connected to the base 1 near one end of the release roller 2 through an external bracket, and the ends of the two rectangular blocks 3 are provided with limiting grooves 301, and the inner walls of the limiting grooves 301 on both sides are movably connected to lifting rods 6 for lifting and moving, and the opposite surfaces of the ends of the two lifting rods 6 are penetrated and rotatably connected to pulling rollers 7 driven by a power mechanism, and the pulling rollers 7 are provided with a winding mechanism for driving the winding roller 4 to wind the cling film and a stretching mechanism for driving the pulling roller 7 to stretch the cling film.

[0026] The winding mechanism includes a pulling roller 7, one end of which is coaxially fixedly connected to a first pulley 8, and the end of the winding roller 4 corresponding to the first pulley 8 is coaxially fixedly connected to a second pulley 9, and the outer contours of the first pulley 8 and the second pulley 9 are provided with a transmission belt 10 for driving the winding roller 4 to rotate and wind up the cling film.

[0027] When in use, by setting the base 1, the base 1 is first placed on the ground to improve the stability of the traction device, and the release roller 2 set on the base 1 is fixedly supported on the base 1 through an external bracket, so that the release roller 2 can be rotated to release the cling film. The rectangular block 3 set on the base 1 and the winding roller 4 set on the rectangular block 3 enable the rectangular block 3 to fix the winding roller 4 on the base 1, and the support roller 5 set on the base 1 is fixed to the base 1 through an external bracket, and the support roller 5 supports the cling film at the bottom, and the limiting groove 301 opened on the rectangular block 3 and the lifting rod 6 set on the limiting groove 301 can make the lifting rod 6 be lifted and moved on the inner wall of the limiting groove 301, and the pulling roller 7 set on the lifting rod 6 can support the cling film on the top of the winding roller 4.

[0028] The pulling roller 7 is driven to rotate by the motor, so that the motor can drive the pulling roller 7 to rotate on the lifting rod 6. Through the second pulley 9 arranged on the winding roller 4 and the first pulley 8 arranged on the pulling roller 7, the second pulley 9 and the first pulley 8 are coaxially fixedly connected with the winding roller 4 and the pulling roller 7 respectively. Through the transmission belt 10 arranged on the first pulley 8 and the second pulley 9, the pulling roller 7 rotates on the fixed axis, and then the transmission belt 10 can drive the second pulley 9 and the winding roller 4 to rotate on the fixed axis synchronously under the action of the first pulley 8, and the end of the cling film away from the release roller 2 is adhered to the surface of the winding roller 4, which further realizes the rotation of the winding roller 4 to wind up the cling film, and the winding roller 4 is detachably connected to the rectangular block 3 to facilitate the replacement of the winding roller 4. At the same time, the stretching mechanism can drive the pulling roller 7 to move up and down to stretch the cling film.

[0029] Embodiment 2:

[0030] On the basis of the first embodiment, further: The stretching mechanism includes a hexagonal frame 13 coaxially fixedly connected to the winding roller 4 at symmetrical positions near the two ends of the rectangular block 3, which pushes the pulling roller 7 to move up and down, and the opposite surfaces of the lifting rods 6 on both sides are rotatably connected to the columnar blocks 12 that roll with the outer contour of the hexagonal frame 13, and the opposite surfaces of the lifting rods 6 on each side and the limiting groove 301 are fixedly connected to the first spring 11 that guides the lifting rod 6 to reset.

[0031] An L-shaped plate 14 is fixedly connected to the rectangular block 3 near one side of the transmission belt 10, and a moving rod 15 is penetrated and movably connected to the L-shaped plate 14. An end of the moving rod 15 near the transmission belt 10 is fixedly connected to a pulling wheel 16 for pulling the transmission belt 10, and one side of the transmission belt 10 is sleeved on the outer contour of the pulling wheel 16, and a second spring 161 is fixedly connected to the opposite surface of the pulling wheel 16 and the L-shaped plate 14 for guiding the pulling wheel 16 to perform reset movement.

[0032] When in use, the hexagonal frame 13 is arranged on the winding roller 4, and the hexagonal frame 13 is coaxially fixedly connected with the winding roller 4, so that the hexagonal frame 13 can be synchronously rotated with the winding roller 4, and the first spring 11 and the column block 12 arranged on the lifting rod 6 can make the lifting rod 6 drive the column block 12 to move and fit the outer contour of the hexagonal frame 13 under the pulling force of the first spring 11. When the corner position of the hexagonal frame 13 rotates and contacts with the column block 12, the corner position of the hexagonal frame 13 and the axial radius of the winding roller 4 increase, so that the column block 12 is in the hexagonal position. Under the action of the hexagonal frame 13, the lifting rod 6 and the pulling roller 7 are pushed to move in the upward vertical direction, and the first spring 11 is in a released state under the action of the lifting rod 6, so that the pulling roller 7 can stretch the cling film, ensure the uniformity of the thickness of the cling film, and avoid the problem of wrinkles in the cling film due to uneven thickness during the winding process. When the side of the hexagonal frame 13 rotates to the position corresponding to the columnar block 12, the axial radius of the side and the winding roller 4 is reduced, and then the first spring 11 contracts to drive the lifting rod 6 and the pulling roller 7 to reset in the downward vertical direction.

[0033] The L-shaped plate 14 is fixedly supported on the rectangular block 3 by the L-shaped plate 14, and the moving rod 15 is provided on the L-shaped plate 14, and the pull wheel 16 is provided on the moving rod 15, so that the moving rod 15 drives the pull wheel 16 to move horizontally on the L-shaped plate 14, and the second spring 161 provided on the pull wheel 16 first sets one side of the transmission belt 10 on the outer contour of the pull wheel 16, so that the pull wheel 16 can tighten the transmission belt 10 under the tension of the second spring 161, and when the lifting rod 6 moves in the upward direction When the pull wheel 16 is pulled by the transmission belt 10 and moves horizontally in the direction away from the L-shaped plate 14, the second spring 161 is in a released state under the action of the pull wheel 16. When the lifting rod 6 moves in the downward direction, the second spring 161 contracts and pulls the pull wheel 16 to reset in the direction close to the L-shaped plate 14, so that the pull wheel 16 can pull the transmission belt 10 to fit the outer contour of the first pulley 8 and the second pulley 9, thereby ensuring the stability of the transmission between the transmission belt 10 and the first pulley 8 and the second pulley 9.

[0034] Embodiment three:

[0035] On the basis of the second embodiment, further: The rectangular block 3 is provided with a smoothing mechanism for smoothing the cling film on the surface of the winding roller 4, and the smoothing mechanism includes two rectangular blocks 3, on opposite surfaces near the bottom ends of which arc frames 17 are fixedly connected, and inner walls of the arc frames 17 on both sides are movably connected with movable plates 18 for arc motion, and telescopic rods 19 are fixedly connected at symmetrical positions at both ends of the movable plate 18, and the ends of the telescopic rods 19 are fixedly connected with arc strips 20 for smoothing the cling film on the surface of the winding roller 4, and the outer contours of the two telescopic rods 19 are provided with third springs 21 for guiding the winding roller 4 to reset and move, and the two ends of the third spring 21 on each side are respectively fixedly connected to the movable plate 18 and the arc strip 20.

[0036] A track plate 22 is fixedly connected to one side of the base 1 close to the rectangular block 3, and an inner wall of the track plate 22 is movably connected to an L-shaped toothed plate 23 that pushes the movable plate 18 to perform an arc motion, and an arc-shaped toothed plate 24 that meshes with the L-shaped toothed plate 23 is fixedly connected to one end of the bottom side of the movable plate 18 close to the release roller 2, and a fixed plate 25 that pushes the L-shaped toothed plate 23 to perform horizontal movement is fixedly connected to one end of the movable rod 15 away from the pull wheel 16.

[0037] When in use, the arc frame 17 is fixedly supported on the rectangular block 3 through the arc frame 17 provided on the rectangular block 3, and the movable plate 18 is provided on the arc frame 17, so that the movable plate 18 limits the moving direction of the movable plate 18, and the telescopic rod 19 is provided on the movable plate 18 and the arc strip 20 is provided on the transmission belt 10, so that the telescopic rod 19 fixes the arc strip 20 on the movable plate 18, and the third spring 21 provided on the telescopic rod 19 can make the arc strip 20 fit with the surface of the winding roller 4 under the elastic force of the third spring 21. As the diameter of the winding roller 4 increases continuously during the winding process of the cling film, the telescopic rod 19 can perform corresponding contraction adjustment on the arc strip 20, so as to facilitate the subsequent smoothing operation of the cling film on the surface of the winding roller 4.

[0038] The track plate 22 is fixedly supported on the base 1 by the track plate 22 arranged on the base 1, and the L-shaped toothed plate 23 arranged on the track plate 22 enables the track plate 22 to limit the moving direction of the L-shaped toothed plate 23. The fixed plate 25 is arranged on the moving rod 15, and the fixed plate 25 is fixedly connected to the L-shaped toothed plate 23. The moving rod 15 is driven to move horizontally back and forth by the pull wheel 16, so that the fixed plate 25 can drive the L-shaped toothed plate 23 to move horizontally back and forth synchronously inside the track plate 22 under the action of the moving rod 15. The arc-shaped tooth plate 24 and the teeth on the arc-shaped tooth plate 24 and the L-shaped tooth plate 23 are meshed with each other. As the L-shaped tooth plate 23 moves back and forth horizontally, the arc-shaped tooth plate 24 can drive the movable plate 18 to move back and forth in an arc along the inner wall of the movable block 27 under the action of the L-shaped tooth plate 23. At the same time, the movable plate 18 can drive the arc-shaped strip 20 to reciprocate and smooth the cling film on the surface of the winding roller 4, thereby improving the flatness of the cling film rolled up by the winding roller 4. The arc-shaped strip 20 is made of silicone material with a smooth surface and good wear resistance and anti-stickiness, thereby preventing the arc-shaped strip 20 from scratching the cling film.

[0039] Embodiment 4:

[0040] On the basis of the third embodiment, further: Support plates 26 are sleeved on both ends of the pulling roller 7 at symmetrical positions, and movable grooves 262 sleeved on the rotating shaft of the support roller 5 are opened at the ends of the support plates 26 on both sides away from the pulling roller 7, and rectangular through grooves 261 are opened on the symmetrical positions of the two support plates 26, and the inner walls of the rectangular through grooves 261 on both sides are movably connected with moving blocks 27, and one side of the opposite surfaces of the two moving blocks 27 is fixedly connected with an upper clamping plate 28 for supporting the edge position of the cling film, and a support groove 271 is opened on the side of the moving block 27 away from the upper clamping plate 28, and the inner walls of the support grooves 271 on both sides are movably connected with lower clamping plates 29 for clamping the edge position of the cling film.

[0041] The pulling roller 7 is coaxially fixed with elliptical plates 31 at symmetrical positions at both ends of the support plate 26, and the two elliptical plates 31 are each provided with an elliptical groove 311 for pulling the moving block 27 for reciprocating movement. The opposite back surfaces of the two moving blocks 27 are fixedly connected with pull rods 30, and the ends of the pull rods 30 away from the moving block 27 are respectively penetrated to the inner walls of the adjacent elliptical grooves 311 and movably connected. The opposite back surfaces of the two support plates 26 are fixedly connected with n-shaped frames 32, and each side of the n-shaped frames 32 is provided with a parallelogram groove 321 for pulling the lower clamping plate 29 for reciprocating movement, and each side of the lower clamping plate 29 close to the n-shaped frame 32 is fixedly connected with a slider 33, and the slider 33 penetrates to the inner wall of the parallelogram groove 321 and is movably connected.

[0042] When in use, through the support plate 26 arranged on the pulling roller 7, the support plate 26 is sleeved on the rotating shaft of the pulling roller 7 and movably connected, and through the movable groove 262 opened on the support plate 26, and the movable groove 262 is sleeved on the rotating shaft of the support roller 5 and movably connected, as the pulling roller 7 moves up and down, the movable groove 262 can be adaptively adjusted on the support roller 5, avoiding obstruction to the lifting and lowering movement of the pulling roller 7.

[0043] Through the rectangular through groove 261 opened on the support plate 26 and the moving block 27 set on the support plate 26, the rectangular through groove 261 limits the moving direction of the moving block 27. Through the upper clamping plate 28 set on the moving block 27, the edge positions of both sides of the cling film are placed on the bottom side of the upper clamping plates 28 on both sides, so that the upper clamping plates 28 can support the edge positions of both sides of the cling film. Through the support groove 271 opened on the moving block 27 and the lower clamping plate 29 arranged on the support groove 271, the moving block 27 provides limited support for the moving direction of the lower clamping plate 29. Through the elliptical plate 31 arranged on the pulling roller 7, and the elliptical plate 31 is coaxially fixedly connected with the pulling roller 7, the pulling roller 7 can drive the elliptical plate 31 to rotate synchronously on a fixed axis. Through the pull rod 30 set on the moving block 27 and the elliptical groove 311 opened on the elliptical plate 31, the elliptical plate 31 rotates on a fixed axis, so that the pull rod 30 can pull the moving block 27 to reciprocate along the inner wall of the rectangular through groove 261 under the action of the elliptical groove 311.

[0044] like Figure 1 , Figure 4 , Figure 5 , Figure 6 and Fig. 9As shown, the n-shaped frame 32 is fixed on the support plate 26 through the n-shaped frame 32 set on the support plate 26, and the parallelogram groove 321 opened on the n-shaped frame 32 and the slider 33 set on the lower clamping plate 29, when the pull rod 30 pushes the moving block 27 to move to the extreme position at one end of the support roller 5, the slider 33 can drive the lower clamping plate 29 to move towards the direction close to the upper clamping plate 28 under the action of the parallelogram groove 321, so that the lower clamping plate 29 can clamp the cling film on the bottom side of the upper clamping plate 28, and when the pull rod 30 pulls the moving block 27 to move towards the end close to the pull roller 7, the upper clamping plate 29 is 28 and the lower clamping plate 29 can pull the cling film towards the direction close to the pulling roller 7. When the moving block 27 moves to the extreme position at one end of the pulling roller 7, the slider 33 drives the lower clamping plate 29 to reset in the direction away from the upper clamping plate 28 under the action of the parallelogram groove 321. At this time, the lower clamping plate 29 releases the clamping state of the cling film, so that the pull rod 30 can push the moving block 27 to reset towards the end close to the supporting roller 5, further improving the flatness of the cling film conveying, avoiding the deviation of the cling film due to uneven traction force, resulting in wrinkles at the edge of the cling film, affecting the winding effect.

[0045] A traction method for producing a self-adhesive cling film comprises the following steps: S1, rolling up the cling film: guiding the cling film to the surface of the winding roller 4 through the release roller 2, ensuring that the starting end of the cling film is firmly adhered to the winding roller 4, during which the winding roller 4 is driven by the motor to rotate, so that the winding roller 4 rolls up the cling film; S2, stretching operation: adjusting the pulling roller 7 to move up and down through the lifting rod 6, so that the pulling roller 7 applies a uniform stretching force to the cling film, so that the cling film is fully stretched before rolling, ensuring the uniformity of the thickness of the cling film and improving the quality of the cling film; S3, traction operation: during the rolling process of the cling film, the clamping device stably clamps the edge of the cling film, and the moving block 27 pulls the cling film, thereby preventing the cling film from shifting due to uneven traction force, resulting in wrinkles at the edge of the cling film, and improving the flatness and consistency of the cling film; S4, smoothing operation: The L-shaped tooth plate 23 drives the movable plate 18 to swing back and forth in an arc shape, and the arc strip 20 is in close contact with the surface of the winding roller 4, so that the movable plate 18 drives the arc strip 20 to smooth the cling film on the surface of the winding roller 4, ensuring the surface flatness of the cling film without wrinkles, thereby improving the quality of the cling film winding.

[0046] Furthermore, the existing device can stretch the cling film during the winding process, which is safe to use and better than traditional products.

[0047] The standard parts used in this embodiment can be purchased directly from the market, and the non-standard structural components recorded in the specification and the drawings can also be directly processed according to the existing technical common sense. At the same time, the connection method of each component adopts the mature conventional means in the prior art, and the machinery, parts and equipment all adopt the conventional models in the prior art, so no specific description will be given here.

[0048] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A traction device for producing self-adhesive cling film, characterized in that: The invention comprises a base (1), one end of the base (1) is rotatably connected to a release roller (2) for releasing a cling film through an external bracket, a winding roller (4) for winding up the cling film is penetrated and rotatably connected to a fixed axis at two symmetrical positions on both sides of the base (1) away from one end of the release roller (2), a support roller (5) for supporting the bottom cling film is rotatably connected to the base (1) near one end of the release roller (2) through an external bracket, the ends of the two rectangular blocks (3) are provided with limit grooves (301), the inner walls of the limit grooves (301) on both sides are movably connected to lifting rods (6) for lifting and moving, and the opposite surfaces of the ends of the two lifting rods (6) are penetrated and rotatably connected to a pulling roller (7) driven to rotate by a power mechanism, and the pulling roller (7) is provided with a winding mechanism for driving the winding roller (4) to wind up the cling film and a stretching mechanism for driving the pulling roller (7) to stretch the cling film.

2. A traction device for producing self-adhesive cling film according to claim 1, characterized in that: The rewinding mechanism comprises a pulling roller (7) having one end coaxially fixedly connected to a first belt pulley (8), and a rewinding roller (4) having one end coaxially fixedly connected to a second belt pulley (9) at a position corresponding to the first belt pulley (8), and a transmission belt (10) for driving the rewinding roller (4) to rotate and rewind the cling film is sleeved on the outer contours of the first belt pulley (8) and the second belt pulley (9).

3. A traction device for producing self-adhesive cling film according to claim 1, characterized in that: The stretching mechanism comprises a hexagonal frame (13) coaxially fixedly connected to a push-pull roller (7) for lifting and lowering at symmetrical positions of the winding roller (4) near the two ends of the rectangular block (3); columnar blocks (12) are rotatably connected to the opposite surfaces of the lifting rods (6) on both sides and are rollably connected to the outer contour of the hexagonal frame (13); and a first spring (11) is fixedly connected to the opposite surface of the lifting rod (6) and the limiting groove (301) on each side to guide the lifting rod (6) to reset.

4. A traction device for producing self-adhesive cling film according to claim 1, characterized in that: An L-shaped plate (14) is fixedly connected to the rectangular block (3) on one side close to the transmission belt (10), a moving rod (15) is penetrated and movably connected to the L-shaped plate (14), one end of the moving rod (15) close to the transmission belt (10) is fixedly connected to a pulley (16) for pulling the transmission belt (10), and one side of the transmission belt (10) is sleeved on the outer contour of the pulley (16), and a second spring (161) for guiding the pulley (16) to reset is fixedly connected to the opposite surface of the pulley (16) and the L-shaped plate (14).

5. The traction device for producing self-adhesive cling film according to claim 1, characterized in that: The rectangular block (3) is provided with a smoothing mechanism for smoothing the cling film on the surface of the winding roller (4), the smoothing mechanism comprising two rectangular blocks (3) having arc frames (17) fixedly connected to opposite surfaces near the bottom ends, the inner walls of the arc frames (17) on both sides being movably connected to movable plates (18) for performing arc motion, telescopic rods (19) fixedly connected at symmetrical positions at both ends of the movable plate (18), the ends of the telescopic rods (19) being fixedly connected to arc strips (20) for smoothing the cling film on the surface of the winding roller (4), the outer contours of the two telescopic rods (19) being sleeved with third springs (21) for guiding the winding roller (4) to perform reset movement, the two ends of the third spring (21) on each side being respectively fixedly connected to the movable plate (18) and the arc strip (20).

6. A traction device for producing self-adhesive cling film according to claim 1, characterized in that: A track plate (22) is fixedly connected to one side of the base (1) close to the rectangular block (3); an L-shaped toothed plate (23) is movably connected to the inner wall of the track plate (22) for pushing the movable plate (18) to move in an arc shape; an arc-shaped toothed plate (24) is fixedly connected to one end of the bottom side of the movable plate (18) close to the release roller (2) for meshing transmission with the L-shaped toothed plate (23); and a fixed plate (25) is fixedly connected to one end of the movable rod (15) away from the pull wheel (16) for pushing the L-shaped toothed plate (23) to move horizontally.

7. The traction device for producing self-adhesive cling film according to claim 1, characterized in that: Support plates (26) are sleeved at symmetrical positions on both ends of the pulling roller (7), and movable grooves (262) sleeved on the rotating shaft of the support roller (5) are opened at the ends of the support plates (26) on both sides away from the pulling roller (7), and rectangular through grooves (261) are opened at symmetrical positions of the two support plates (26), and the inner walls of the rectangular through grooves (261) on both sides are movably connected to moving blocks (27), and the upper clamping plates (28) for supporting the edge position of the cling film are fixedly connected to one side of the opposite surfaces of the two moving blocks (27), and the side of the moving blocks (27) away from the upper clamping plates (28) is opened. The inner walls of the support grooves (271) on both sides are movably connected to lower clamping plates (29) for clamping the edge position of the cling film.

8. The traction device for producing self-adhesive cling film according to claim 1, characterized in that: The pulling roller (7) is coaxially fixedly connected with an elliptical plate (31) at symmetrical positions at both ends of the supporting plate (26), and the two elliptical plates (31) are each provided with an elliptical groove (311) for pulling the moving block (27) to move back and forth. The opposite back surfaces of the two moving blocks (27) are fixedly connected with a pull rod (30), and the end of the pull rod (30) away from the moving block (27) is respectively penetrated to the inner wall of the adjacent side elliptical groove (311) and movably connected. The opposite back surfaces of the two supporting plates (26) are fixedly connected with an n-shaped frame (32), and each side of the n-shaped frame (32) is provided with a parallelogram groove (321) for pulling the lower clamping plate (29) to move back and forth. Each side of the lower clamping plate (29) close to the n-shaped frame (32) is fixedly connected with a slider (33), and the slider (33) is penetrated to the inner wall of the parallelogram groove (321) and movably connected.

9. A traction method for producing a self-adhesive cling film, applied to a traction device for producing a self-adhesive cling film according to any one of claims 1 to 8, comprising the following steps: S1, rolling up the cling film: guiding the cling film to the surface of the winding roller (4) through the release roller (2), ensuring that the starting end of the cling film is firmly adhered to the winding roller (4), and during this process, the winding roller (4) is driven to rotate by a motor, so that the winding roller (4) can roll up the cling film; S2, stretching operation: adjusting the pulling roller (7) to move up and down by means of the lifting rod (6), so that the pulling roller (7) applies a uniform stretching force to the cling film, so that the cling film is fully stretched before being rolled up, thereby ensuring the uniformity of the thickness of the cling film and improving the quality of the cling film; S3, traction operation: during the rolling process of the cling film, the clamping device stably clamps the edge of the cling film, and the moving block (27) pulls the cling film, thereby preventing the cling film from shifting due to uneven traction force, resulting in wrinkles at the edge of the cling film, and improving the flatness and consistency of the cling film; S4, smoothing operation: the L-shaped tooth plate (23) drives the movable plate (18) to swing back and forth in an arc shape, and the arc strip (20) is in close contact with the surface of the winding roller (4), so that the movable plate (18) drives the arc strip (20) to smooth the cling film on the surface of the winding roller (4), thereby ensuring that the surface of the cling film is flat and wrinkle-free, thereby improving the quality of the cling film winding.

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