Controllable winding anti-loosening structure for plastic film

Abstract

The utility model provides a controllable winding anti-loosening structure for a plastic film. The controllable winding anti-loosening structure comprises a base, a winding assembly is arranged at the top of the base, and an anti-loosening assembly is arranged at the position, located on the right side of the winding assembly, of the top of the base; the winding assembly comprises a fixing block arranged on the top of the base. According to the controllable winding anti-loosening structure for the plastic film, the hand wheel is rotated to drive the rotating lead screw to rotate and drive the moving block to move towards the front side and the rear side, winding rollers of different lengths can be fixed, the applicability of a film winding device is improved, meanwhile, due to the arrangement of the sliding column, the jacking roller and the sliding sleeve, the film winding device is convenient to use, and the practicability is high. Under the normal condition, as the jacking roller is higher than the guide rollers on the two sides, the film can exert downward force on the jacking roller, and when the film is loosened, the jacking roller can be jacked up under the action of the jacking spring, so that the line spacing of the film is increased, the film is prevented from being directly wound to generate wrinkles, the structure is simple and practical, and the using effect is good.

Description

Technical Field

[0001] This utility model relates to the field of plastic film winding, and in particular to a controllable winding anti-loosening structure for plastic film. Background Technology

[0002] Plastic film is a thin and flexible plastic product made from high molecular polymers (such as polyethylene, polypropylene, polyvinyl chloride, etc.) through processes such as blow molding and casting. It has the characteristics of being lightweight, transparent, waterproof, and moisture-proof, and is widely used in agriculture, packaging, industry, and daily life.

[0003] After production, plastic film typically needs to be rolled up. Rolling reduces the volume of the plastic film, making it easier to handle, stack, and store. It also effectively protects the film surface from scratches, abrasions, and other damage during transportation and storage. Rolled plastic film is also easier to automate and continuously process in subsequent steps such as printing, lamination, and bag making, improving production efficiency. In use, it can be easily unrolled from the roll for laying, packaging, and other operations as needed.

[0004] Winding can help maintain the flatness and stability of plastic films to a certain extent, reducing problems such as film deformation and wrinkles that may occur due to folding and stacking, thereby better preserving the physical and performance properties of the film. In existing technologies, some methods for winding plastic films typically involve placing a roller on a machine, which then drives the roller to rotate and wind the film. However, this method has several drawbacks. First, it is difficult to adjust the spacing of the fixed rollers, resulting in films of different widths being wound onto rollers of the same length. Second, it lacks an anti-slackening structure, which may lead to wrinkles and other issues affecting the quality of the finished product after winding.

[0005] Therefore, it is necessary to provide a controllable winding and anti-loosening structure for plastic films to solve the above-mentioned technical problems. Utility Model Content

[0006] This invention provides a controllable winding and anti-slackening structure for plastic film, which solves the problem that in some existing film winding devices, it is inconvenient to adjust and replace rollers of different lengths during use, and it is impossible to prevent the film from loosening.

[0007] To solve the above technical problems, this utility model provides a controllable winding anti-loosening structure for plastic film, comprising: a base, a winding assembly disposed on the top of the base, and an anti-loosening assembly disposed on the top of the base and to the right of the winding assembly;

[0008] The winding assembly includes a fixed block disposed on the top of the base, a longitudinal groove is provided on the top of the base, a movable block is provided on the inner side of the longitudinal groove that can slide back and forth along its length, a retaining plate is rotatably provided on the movable block and the fixed block opposite to each other, and a winding roller is provided on the inner side of the two retaining plates.

[0009] The anti-loosening component includes two support frames disposed on the top right side of the base. Guide rollers are rotatably disposed on the inner side of both support frames. Two sliding sleeves are disposed on the top of the base and on the inner side of the two support frames.

[0010] Preferably, each of the two sliding sleeves has a sliding column that can slide up and down, and each of the two sliding columns has a connecting frame on its top. A lifting roller is rotatably provided on one side of each of the two connecting frames that are opposite to each other.

[0011] Preferably, the bottom of the inner wall of each of the two sliding sleeves is provided with an ejector spring, the top of each ejector spring is fixedly connected to the bottom of the two sliding columns respectively, and the peripheral side of each of the two sliding sleeves is provided with a vent hole.

[0012] Preferably, a rotating screw is rotatably provided on the inner side of the longitudinal groove, the peripheral side of the rotating screw is threadedly connected to the bottom of the moving block, the front end of the rotating screw passes through the inner side of the longitudinal groove and extends to the front of the base, and a handwheel is provided on the front end of the rotating screw.

[0013] Preferably, the rear end of the rear-side retaining plate penetrates through the front of the fixing block and extends to its back, and a set of gears is provided at the rear end of the rear-side retaining plate.

[0014] Preferably, a drive motor is provided on the rear side of the top of the base, and the output end of the drive motor is engaged with the rear end of the retaining plate on the rear side through a set of gears. A support leg is provided on the bottom of the base.

[0015] Compared with related technologies, the controllable winding and anti-slackening structure for plastic film provided by this utility model has the following beneficial effects:

[0016] This invention provides a controllable anti-slack winding structure for plastic film. By rotating the handwheel, the rotating screw rotates, which in turn causes the moving block to move back and forth under the action of the longitudinal groove. This allows for the fixing of rollers of different lengths, improving the applicability of the film winding device. Simultaneously, through the arrangement of the sliding column, lifting roller, and sliding sleeve, under normal conditions, because the lifting roller is higher than the guide rollers on both sides, the film exerts a downward force on the lifting roller. When the film slacks, the lifting roller is lifted by the action of the ejection spring, thereby increasing the row spacing of the film and preventing wrinkles from being directly wound. The structure is simple, practical, and has good performance. Attached Figure Description

[0017] Figure 1 A schematic diagram of a preferred embodiment of a controllable winding anti-loosening structure for plastic film provided by this utility model;

[0018] Figure 2 for Figure 1 A structural schematic diagram of the front view of the base portion shown;

[0019] Figure 3 for Figure 1 A structural schematic diagram of the right-side sectional view of the base portion shown;

[0020] Figure 4 for Figure 2 A schematic diagram of the structure of the sliding sleeve section shown in the front cross-sectional view.

[0021] Figure 5 for Figure 3 The diagram shows a partial disassembly of the fixed block structure.

[0022] The following are the labels in the diagram: 1. Base; 2. Winding assembly; 21. Fixing block; 22. Longitudinal groove; 23. Moving block; 24. Snap-fit ​​plate; 25. Winding roller; 26. Rotating screw; 27. Handwheel; 28. Gear; 29. ​​Drive motor; 3. Anti-loosening assembly; 31. Support frame; 32. Guide roller; 33. Sliding sleeve; 34. Sliding column; 35. Lifting roller; 36. Ejection spring. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0024] Please refer to the following: Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 ,in Figure 1 A schematic diagram of a preferred embodiment of a controllable winding anti-loosening structure for plastic film provided by this utility model; Figure 2 for Figure 1A structural schematic diagram of the front view of the base portion shown; Figure 3 for Figure 1 A structural schematic diagram of the right-side sectional view of the base portion shown; Figure 4 for Figure 2 A schematic diagram of the structure of the sliding sleeve section shown in the front cross-sectional view. Figure 5 for Figure 3 The diagram shows a partially disassembled structure of a fixed block. A controllable winding anti-loosening structure for plastic film includes: a base 1, a winding assembly 2 on the top of the base 1, and an anti-loosening assembly 3 on the top of the base 1 and to the right of the winding assembly 2.

[0025] The winding assembly 2 includes a fixed block 21 disposed on the top of the base 1. The top of the base 1 is provided with a longitudinal groove 22. A movable block 23 is disposed on the inner side of the longitudinal groove 22, which can slide back and forth along its length. A retaining plate 24 is rotatably disposed on the movable block 23 opposite to the fixed block 21. A winding roller 25 is disposed on the inner side of the two retaining plates 24.

[0026] The movable block 23, which can move back and forth, allows for the removal and installation of rollers 25 of different lengths when winding films of different widths, thereby improving the applicability of the device. The snap-fit ​​plate 24 is engaged with the front and rear ends of the roller 25. When the snap-fit ​​plate 24 rotates, it can drive the roller 25 to rotate.

[0027] The anti-loosening component 3 includes two support frames 31 located on the top right side of the base 1. Guide rollers 32 are rotatably provided on the inner side of both support frames 31. Two sliding sleeves 33 are provided on the top of the base 1 and on the inner side of the two support frames 31.

[0028] The tops of the two sliding sleeves 33 are provided with sliding columns 34 that can slide up and down. The tops of the two sliding columns 34 are provided with connecting frames. The opposite sides of the two connecting frames are provided with lifting rollers 35 that can be rotated.

[0029] With the arrangement of sliding column 34, lifting roller 35 and sliding sleeve 33, under normal circumstances, since the lifting roller 35 is higher than the guide rollers 32 on both sides, the film will exert a downward force on the lifting roller 35. When the film is relaxed, the lifting roller 35 will be lifted by the action of the ejection spring 36, thereby increasing the row spacing of the film and preventing the film from directly winding and causing wrinkles.

[0030] The bottom of the inner wall of each of the two sliding sleeves 33 is provided with an ejector spring 36. The top of each ejector spring 36 is fixedly connected to the bottom of each of the two sliding columns 34. Vent holes are provided on the circumferential side of each of the two sliding sleeves 33.

[0031] The vent design prevents the sliding column 34 from failing to slide down.

[0032] A rotating screw 26 is rotatably provided on the inner side of the longitudinal groove 22. The circumferential side of the rotating screw 26 is threadedly connected to the bottom of the moving block 23. The front end of the rotating screw 26 passes through the inner side of the longitudinal groove 22 and extends to the front of the base 1. A handwheel 27 is provided at the front end of the rotating screw 26.

[0033] Depending on the length of the rollers 25 used, the rotating screw 26 is driven to rotate by rotating the handwheel 27, and then the moving block 23 moves back and forth under the action of the longitudinal groove 22, thereby fixing the rollers 25 of different lengths.

[0034] The rear end of the rear retaining plate 24 passes through the front of the fixing block 21 and extends to its back. A set of gears 28 is provided at the rear end of the rear retaining plate 24.

[0035] The rotation of the output end of the drive motor 29 drives the rotation of the gear set 28, which in turn drives the winding roller 25 to wind up the film. When the film is severely loose and the sliding column 34 can no longer rise, the speed of the drive motor 29 can be slightly increased to prevent the film from loosening during winding.

[0036] A drive motor 29 is provided on the rear side of the top of the base 1. The output end of the drive motor 29 is engaged with the rear end of the rear retaining plate 24 through a set of gears 28. Support legs are provided at the bottom of the base 1.

[0037] The working principle of the controllable winding and anti-loosening structure for plastic film provided by this utility model is as follows:

[0038] Step 1: When using, select the appropriate roller 25 according to the required width of the film to be wound, and drive the rotating screw 26 to rotate by turning the handwheel 27. Then, under the action of the longitudinal groove 22, the moving block 23 moves back and forth, thereby fixing the roller 25 of different lengths.

[0039] Step 2: Pass one end of the film through the inside of the right guide roller 32, the top of the lifting roller 35, and the inside of the left guide roller 32. Finally, fix this end to the surface of the winding roller 25. The rotation of the output end of the drive motor 29 drives the rotation of the gear 28 group, which in turn drives the winding roller 25 to rotate and wind up the film. When the film is severely loose and the sliding column 34 can no longer rise, the speed of the drive motor 29 can be slightly increased to prevent the film from loosening and winding up.

[0040] Step 3: During the winding process, in order to avoid wrinkles caused by film slack, the sliding column 34, the lifting roller 35 and the sliding sleeve 33 are set up so that, under normal circumstances, since the lifting roller 35 is higher than the guide rollers 32 on both sides, the film will exert a downward force on the lifting roller 35, which will slightly compress the ejector spring 36. When the film is slack, the lifting roller 35 will be lifted by the ejector spring 36, thereby increasing the film spacing and preventing the film from directly winding and causing wrinkles.

[0041] Compared with related technologies, the controllable winding and anti-slackening structure for plastic film provided by this utility model has the following beneficial effects:

[0042] By rotating the handwheel 27, the rotating screw 26 is driven to rotate, which in turn causes the moving block 23 to move back and forth under the action of the longitudinal groove 22. This allows for the fixing of rollers 25 of different lengths, improving the applicability of the film winding device. At the same time, through the setting of the sliding column 34, the lifting roller 35, and the sliding sleeve 33, under normal circumstances, since the lifting roller 35 is higher than the guide rollers 32 on both sides, the film will exert a downward force on the lifting roller 35. When the film is relaxed, the lifting roller 35 will be lifted under the action of the ejection spring 36, thereby increasing the row spacing of the film and preventing wrinkles caused by direct film winding. The structure is simple and practical, and the effect is good.

[0043] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A controllable winding anti-slackening structure for plastic film, characterized in that, include: A base (1) is provided with a winding assembly (2) on the top of the base (1), and an anti-loosening assembly (3) is provided on the top of the base (1) and on the right side of the winding assembly (2). The winding assembly (2) includes a fixing block (21) disposed on the top of the base (1). The top of the base (1) is provided with a longitudinal groove (22). A moving block (23) is disposed on the inner side of the longitudinal groove (22) and can slide back and forth along its length direction. A retaining plate (24) is rotatably disposed on one side of the moving block (23) and the fixing block (21). A winding roller (25) is disposed on the inner side of the two retaining plates (24). The anti-loosening component (3) includes two support frames (31) disposed on the top right side of the base (1). The inner sides of the two support frames (31) are rotatably provided with guide rollers (32). The top of the base (1) and the inner sides of the two support frames (31) are provided with two sliding sleeves (33) in front and behind.

2. The controllable winding anti-slackening structure for plastic film according to claim 1, characterized in that, The tops of the two sliding sleeves (33) are provided with sliding columns (34) that can slide up and down. The tops of the two sliding columns (34) are provided with connecting frames. The opposite sides of the two connecting frames are provided with lifting rollers (35).

3. The controllable winding anti-slackening structure for plastic film according to claim 2, characterized in that, The bottom of the inner wall of each of the two sliding sleeves (33) is provided with an ejector spring (36), the top of each of the two ejector springs (36) is fixedly connected to the bottom of each of the two sliding columns (34), and the circumferential side of each of the two sliding sleeves (33) is provided with a vent hole.

4. The controllable winding anti-slackening structure for plastic film according to claim 1, characterized in that, A rotating screw (26) is rotatably provided on the inner side of the longitudinal groove (22). The circumferential side of the rotating screw (26) is threadedly connected to the bottom of the moving block (23). The front end of the rotating screw (26) passes through the inner side of the longitudinal groove (22) and extends to the front of the base (1). A handwheel (27) is provided on the front end of the rotating screw (26).

5. The controllable winding anti-slackening structure for plastic film according to claim 1, characterized in that, The rear end of the rear-side card plate (24) passes through the front of the fixing block (21) and extends to its back. A set of gears (28) is provided at the rear end of the rear-side card plate (24).

6. The controllable winding anti-slackening structure for plastic film according to claim 5, characterized in that, A drive motor (29) is provided on the rear side of the top of the base (1). The output end of the drive motor (29) on the front is engaged with the rear end of the retaining plate (24) on the rear side through a set of gears (28). A support leg is provided at the bottom of the base (1).

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