Clamping mechanism with buffering effect for plastic film processing

Abstract

The plastic film processing clamping mechanism with the buffering effect comprises a base, preset sliding grooves are formed in the outer surfaces of the two sides of the base correspondingly, a traction mechanism is arranged on the outer surface of one end of the base, and a plastic film clamping mechanism is movably connected to the upper end of the base. The plastic film machining device is high in practicability, the problem that a traditional clamping mechanism is poor in buffering effect, and consequently a plastic film is prone to being damaged during machining is solved by arranging the buffering clamping unit, two second driving motors and a linkage assembly are jointly matched, a hinge rod can be driven to drive a flexible clamping elastic piece to conduct lifting adjustment, and the machining efficiency is improved. The plastic film clamping device has the advantages of guaranteeing accurate clamping of a plastic film, accurately adjusting the clamping force, being matched with the elastic telescopic capacity of the arc-shaped buffering plate and the buffering spring, improving the buffering effect when the plastic film is clamped, being safe and efficient, and improving the production efficiency and the production quality of products.

Description

Technical Field

[0001] This invention relates to the field of plastic film processing technology, specifically to a clamping mechanism for processing plastic films with a cushioning effect. Background Technology

[0002] Plastic film is a film made of polyvinyl chloride, polyethylene, polypropylene, polystyrene, and other resins. It is used for packaging and as a coating layer. Plastic packaging and plastic packaging products are taking up an increasingly larger share of the market, especially composite plastic flexible packaging, which is widely used in food, medicine, chemical and other fields. Among them, food packaging accounts for the largest proportion, such as beverage packaging, frozen food packaging, retortable food packaging, fast food packaging, etc. These products have brought great convenience to people's lives. During the processing of plastic film, the film needs to be fixed. However, the existing clamping structure is not tight enough, the cushioning effect is not good, and after clamping, the surface of the film will be wrinkled, which is not conducive to processing.

[0003] A novel film clamping mechanism for a laminating machine, disclosed in publication number CN211441646U, includes a frame comprising a left frame and a right frame. An upper clamping mechanism with a cuboid frame structure is provided between the left and right frames. The upper clamping mechanism includes a left support, a right support, a base connecting the left and right supports, and an upper clamping body with a clamping tip structure. The left support is rotatably fixed to the left frame, and the right support is rotatably fixed to the right frame. A lower clamping mechanism is provided within the upper clamping mechanism. This invention can effectively adjust the film stretching angle and precisely adjust the film clamping force, improving production efficiency, reducing safety risks, and increasing product yield and quality stability.

[0004] Problems with existing technology:

[0005] 1. Traditional clamping mechanisms have poor cushioning effects, leading to easy damage during plastic film processing;

[0006] 2. Existing technology does not have an auxiliary limiting function for the film during the film winding process, resulting in loose film winding and low production efficiency.

[0007] Therefore, it is essential to design a clamping mechanism for plastic film processing that is highly practical, accurately clamps the plastic film, precisely adjusts the clamping force, and enhances the cushioning effect when clamping the plastic film. Summary of the Invention

[0008] The purpose of this invention is to provide a clamping mechanism for processing plastic films with a cushioning effect, so as to solve the problems mentioned in the background art.

[0009] To solve the above technical problems, the present invention provides the following technical solution: a clamping mechanism for processing plastic film with a buffering effect, including a base, with preset sliding grooves respectively opened on the outer surfaces of both sides of the base, a traction mechanism provided on the outer surface of one end of the base, a plastic film clamping mechanism movably connected to the upper end of the base, and an auxiliary winding mechanism provided at the lower end of the traction mechanism.

[0010] The plastic film clamping mechanism includes a drive adjustment unit, a lifting limit unit, and a buffer clamping unit, wherein the lifting limit unit and the buffer clamping unit are both located at the output end of the drive adjustment unit;

[0011] The auxiliary winding mechanism includes an angle adjustment unit and a film auxiliary roller pressing and limiting unit, with the film auxiliary roller pressing and limiting unit located at the upper end of the angle adjustment unit.

[0012] According to the above technical solution, the drive adjustment unit includes a drive motor, the inner side of the drive motor is fixedly connected to the outer surface of one end of the base, a bidirectional threaded rod is fixedly installed on the output shaft of the drive motor and is rotatably connected to the inner wall of the preset slide groove, a sliding connecting block is threadedly connected to the outer surface of the bidirectional threaded rod and is slidably connected to the inner wall of the preset slide groove, a U-shaped mounting bracket is provided on the outer side of the sliding connecting block and mounted on the upper end of the base, and an inner slide groove is opened on the inner side of the U-shaped mounting bracket.

[0013] According to the above technical solution, the lifting and limiting unit includes a rotating wheel and a lifting horizontal plate. The upper outer surface of the rotating wheel is threadedly connected to the upper inner wall of the U-shaped mounting bracket, and the lower outer surface of the rotating wheel is rotatably connected to the upper inner wall of the lifting horizontal plate. An auxiliary limiting groove is provided on the lower outer surface of the lifting horizontal plate.

[0014] According to the above technical solution, the two ends of the lifting plate are respectively fixedly connected to limit sliders, and the outer surface of the limit sliders is slidably connected to the inner wall of the inner slide groove.

[0015] According to the above technical solution, the buffer clamping unit includes a second drive motor. The lower surface of the second drive motor is fixedly connected to the upper surface of the lifting horizontal plate. A linkage component is fixedly connected to the output shaft of the second drive motor. A threaded rod that is rotatably connected to the inner wall of the limiting groove is fixedly connected to the central rotating shaft of the linkage component.

[0016] According to the above technical solution, a fixing block is fixedly installed on the outer surface of the centerline of the threaded rod, and a slider 1 and a slider 2 are respectively threadedly connected to the outer surface of the threaded rod with the fixing block as the central axis and slidably connected to the inner wall of the limiting groove. The inner surfaces of slider 1 and slider 2 are provided with opposite threads.

[0017] According to the above technical solution, the lower surfaces of slider one and slider two are respectively hinged with hinge rods, and the other end of the hinge rod is hinged with a mounting base. The inner surface of the mounting base is rotatably connected with a flexible clamping elastic element. The upper end of the mounting base is fixedly installed with a buffer spring that is fixedly connected to the fixed block. Arc-shaped buffer plates are symmetrically distributed on both sides of the buffer spring. The flexible clamping elastic element, the arc-shaped buffer plates and the buffer spring are all made of flexible elastic material.

[0018] According to the above technical solution, the angle adjustment unit includes a fixed extension plate, one end of the outer surface of the fixed extension plate is fixedly connected to one end of the outer surface of the base, an adjustment plate is hinged to the upper surface of the fixed extension plate, and an abutment rod is hinged to the lower end of the adjustment plate.

[0019] According to the above technical solution, the upper end of the fixed stretching plate is provided with a limiting groove II, and a worm wheel is provided on the outer surface of one end of the fixed stretching plate. A worm is fixedly connected to the output shaft of the worm wheel and is rotatably connected to the inner wall of the limiting groove II. A moving block is threadedly connected to the outer surface of the worm and is slidably connected to the inner wall of the limiting groove II. The upper outer surface of the moving block is rotatably connected to one end of the abutment rod.

[0020] According to the above technical solution, the film-assisted roller pressing and limiting unit includes a fixed sleeve and a connecting cone. The lower outer surface of the connecting cone is slidably connected to the inner wall of the fixed sleeve. A return spring is fixedly connected to the lower end of the connecting cone and to the bottom surface of the inner cavity of the fixed sleeve. An arc-shaped abutment plate is fixedly connected to the upper outer surface of the connecting cone. The inner surface of the arc-shaped abutment plate is covered with a wear-resistant steel sheet to reduce the friction between the plate and the film and increase wear resistance.

[0021] Compared with the prior art, the beneficial effects achieved by the present invention are:

[0022] 1. This invention, by incorporating a drive adjustment unit and a lifting limit unit, enables precise adjustment and clamping of plastic films of varying thicknesses, ensuring accurate clamping force. Through the cooperation between the drive motor, the bidirectional threaded rod, and the sliding connecting block, the distance between the two sets of U-shaped mounting brackets can be adjusted, facilitating the clamping of plastic films of different widths and ensuring greater clamping precision. Utilizing the rotating wheel, combined with the limiting slider and inner sliding groove, the overall lifting of the lifting plate is achieved, allowing for precise adjustment of the film clamping force, improving the equipment's applicability, and further enhancing the quality and efficiency of plastic film processing.

[0023] 2. This invention, by incorporating a buffer clamping unit, solves the problem of poor buffering effect in traditional clamping mechanisms, which easily damages plastic films during processing. Through the coordinated operation of two sets of drive motors and linkage components, the hinge rod can drive the flexible clamping elastic element to adjust its height, ensuring precise clamping of the plastic film and precise adjustment of the clamping force. Combined with the elastic extension and contraction capabilities of the arc-shaped buffer plate and buffer spring, the buffering effect when clamping the plastic film is improved, making it safe, efficient, and improving product production efficiency and quality.

[0024] 3. This invention, by incorporating an angle adjustment unit, solves the problem in existing technologies where the film winding process lacks auxiliary limiting functions, leading to loose film winding and low production efficiency. Through the cooperation between the worm gear and the worm, the moving block can slide on the inner wall of the limiting groove. Combined with the connection between the abutment rod and the adjustment plate, the overall angle of the adjustment plate can be changed. The angle of the adjustment plate can be precisely and quickly adjusted according to the thickness of the winding. The structure is simple, easy to operate, and improves the overall practicality and effectiveness of the device.

[0025] 4. This invention, by setting a film auxiliary roller pressure limiting unit, achieves an auxiliary limiting effect on the winding film. Utilizing the buffering effect of the return spring, it can assist in limiting the film without damaging the film surface. The setting of the arc-shaped abutment plate and the anti-wear steel sheet can reduce the degree of wear between the film and the film, making it safe, efficient, and improving the protection effect on the winding plastic film. Attached Figure Description

[0026] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0027] Figure 1 This is a schematic diagram of the overall frontal three-dimensional structure of the present invention;

[0028] Figure 2 This is a partial three-dimensional schematic diagram of the present invention;

[0029] Figure 3 This is a three-dimensional schematic diagram of the plastic film clamping mechanism of the present invention;

[0030] Figure 4 This is a three-dimensional cross-sectional schematic diagram of the lifting horizontal plate of the present invention;

[0031] Figure 5 This is a partial three-dimensional schematic diagram of the plastic film clamping mechanism of the present invention;

[0032] Figure 6 This is a three-dimensional schematic diagram of the auxiliary winding mechanism of the present invention;

[0033] Figure 7 This is a three-dimensional cross-sectional schematic diagram of the fixed stretching plate of the present invention;

[0034] Figure 8 This is the invention Figure 6 Enlarged view of point A;

[0035] In the diagram: 1. Base; 11. Preset slide groove; 12. Traction mechanism; 2. Plastic film clamping mechanism; 3. Auxiliary winding mechanism; 211. Drive motor one; 212. Bidirectional threaded rod; 213. Sliding connecting block; 214. U-shaped mounting bracket; 221. Rotary wheel; 222. Lifting horizontal plate; 2221. Limiting groove one; 223. Limiting slider; 224. Inner slide groove; 231. Drive motor two; 232. Linkage assembly; 2321. Threaded rod; 2 33. Slider 1; 234. Slider 2; 235. Hinge rod; 236. Mounting base; 237. Flexible clamping elastic element; 238. Arc-shaped buffer plate; 239. Buffer spring; 311. Fixed stretching plate; 3111. Limiting groove 2; 312. Adjusting plate; 313. Worm gear; 314. Worm; 315. Moving block; 316. Abutment rod; 321. Fixed sleeve; 322. Connecting cone; 3221. Return spring; 323. Arc-shaped abutment plate. Detailed Implementation

[0036] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0037] Please see Figure 1-8 The present invention provides a technical solution: a clamping mechanism for processing plastic film with a buffering effect, comprising a base 1, with preset sliding grooves 11 respectively opened on the outer surfaces of both sides of the base 1, a traction mechanism 12 provided on the outer surface of one end of the base 1, a plastic film clamping mechanism 2 movably connected to the upper end of the base 1, and an auxiliary winding mechanism 3 provided at the lower end of the traction mechanism 12; the plastic film clamping mechanism 2 includes a drive adjustment unit, a lifting limit unit, and a buffer clamping unit, both of which are located at the output end of the drive adjustment unit; the auxiliary winding mechanism 3 includes an angle adjustment unit and a film auxiliary roller pressing limit unit, the film auxiliary roller pressing limit unit being located at the upper end of the angle adjustment unit;

[0038] The drive adjustment unit includes a drive motor 211. The inner side of the drive motor 211 is fixedly connected to the outer surface of one end of the base 1. A bidirectional threaded rod 212, which is rotatably connected to the inner wall of the preset slide groove 11, is fixedly installed on the output shaft of the drive motor 211. A sliding connecting block 213, which is slidably connected to the inner wall of the preset slide groove 11, is threadedly connected to the outer surface of the bidirectional threaded rod 212. A U-shaped mounting bracket 214, which is mounted on the upper end of the base 1, is provided on the outer side of the sliding connecting block 213. An inner slide groove 224 is opened on the inner side of the U-shaped mounting bracket 214. Through the cooperation between the drive motor 211, the bidirectional threaded rod 212 and the sliding connecting block 213, the distance between the two sets of U-shaped mounting brackets 214 can be adjusted, which is convenient for cutting plastic films of different widths for clamping and ensures more accurate clamping.

[0039] The lifting limit unit includes a rotating wheel 221 and a lifting horizontal plate 222. The upper outer surface of the rotating wheel 221 is threadedly connected to the upper inner wall of the U-shaped mounting bracket 214, and the lower outer surface of the rotating wheel 221 is rotatably connected to the upper inner wall of the lifting horizontal plate 222. The lower outer surface of the lifting horizontal plate 222 is provided with a limit groove 2221 for auxiliary limiting.

[0040] Limiting sliders 223 are fixedly connected to both ends of the lifting horizontal plate 222. The outer surface of the limiting sliders 223 is slidably connected to the inner wall of the inner slide groove 224. By using the setting of the rotating wheel 221, in conjunction with the limiting ability of the limiting sliders 223 and the inner slide groove 224, the lifting horizontal plate 222 as a whole can be lifted and lowered. This can precisely adjust the film clamping force, improve the applicability of the equipment, and further improve the quality and work efficiency of plastic film processing.

[0041] The buffer clamping unit includes a second drive motor 231. The lower surface of the second drive motor 231 is fixedly connected to the upper surface of the lifting horizontal plate 222. A linkage component 232 is fixedly connected to the output shaft of the second drive motor 231. A 2321 that is rotatably connected to the inner wall of the first limiting groove 2221 is fixedly connected to the central rotation shaft of the linkage component 232.

[0042] A fixing block is fixedly installed on the outer surface of the centerline of the threaded rod 2321. The outer surface of the threaded rod 2321 and the fixing block are respectively threaded to the slider 233 and the slider 234, which are slidably connected to the inner wall of the limiting groove 2221. The inner surfaces of the slider 233 and the slider 234 are provided with opposite threads. Through the cooperation of two sets of drive motors 231 and linkage components 232, the hinge rod 235 can drive the flexible clamping elastic element 237 to adjust the height, so as to ensure the precise clamping of the plastic film and the precise adjustment of the clamping force.

[0043] The lower surfaces of slider 1 233 and slider 2 234 are respectively hinged with hinge rods 235. The other end of the hinge rod 235 is hinged with a mounting base 236. The inner surface of the mounting base 236 is rotatably connected with a flexible clamping elastic element 237. The upper end of the mounting base 236 is fixedly installed with a buffer spring 239 that is fixedly connected to the fixed block. Arc-shaped buffer plates 238 are symmetrically distributed on both sides of the buffer spring 239. The elastic extension and contraction capacity of the arc-shaped buffer plates 238 and the buffer spring 239 are combined to improve the buffering effect when clamping plastic film, which is safe and efficient, and improves the production efficiency and quality of the product.

[0044] The angle adjustment unit includes a fixed extension plate 311, one end of the outer surface of the fixed extension plate 311 is fixedly connected to one end of the outer surface of the base 1, an adjustment plate 312 is hinged to the upper surface of the fixed extension plate 311, and an abutment rod 316 is hinged to the lower end of the adjustment plate 312.

[0045] The upper end of the fixed stretching plate 311 is provided with a limiting groove 3111. A worm wheel 313 is provided on the outer surface of one end of the fixed stretching plate 311. A worm 314 is fixedly connected to the output shaft of the worm wheel 313 and is rotatably connected to the inner wall of the limiting groove 3111. A moving block 315 is threadedly connected to the outer surface of the worm 314 and is slidably connected to the inner wall of the limiting groove 3111. The upper outer surface of the moving block 315 is rotatably connected to one end of the abutment rod 316. Through the cooperation between the worm wheel 313 and the worm 314, the moving block 315 can be driven to slide on the inner wall of the limiting groove 3111. With the connection between the abutment rod 316 and the adjusting plate 312, the overall angle of the adjusting plate 312 can be changed. The angle of the adjusting plate 312 can be adjusted accurately and quickly according to the thickness of the winding. The structure is simple, easy to operate, and improves the overall practicality and effectiveness of the device.

[0046] The film auxiliary roller pressing limiting unit includes a fixed sleeve 321 and a connecting cone 322. The lower outer surface of the connecting cone 322 is slidably connected to the inner wall of the fixed sleeve 321. A return spring 3221, which is fixedly connected to the bottom surface of the inner cavity of the fixed sleeve 321, is fixedly connected to the lower end of the connecting cone 322. An arc-shaped abutment plate 323 is fixedly connected to the upper outer surface of the connecting cone 322. By utilizing the buffering effect of the return spring 3221, the surface of the film can be protected without damaging it while assisting in the limiting. The arc-shaped abutment plate 323 and the anti-wear steel sheet can reduce the degree of wear between the film and the roller, making it safe, efficient, and improving the protection effect on the wound plastic film.

[0047] The working principle of the clamping mechanism for processing plastic film with a cushioning effect will be explained in detail below.

[0048] like Figure 1-8As shown, during operation, firstly, the operator winds one end of the plastic film around the traction mechanism 12, then lays the plastic film flat on the surface of the base 1. At this time, the distance between the two sets of U-shaped mounting brackets 214 is adjusted by cutting the film to a suitable width as needed. The drive motor 211 is then turned on, causing the bidirectional threaded rod 212 to rotate. Under the action of the rotational force, the sliding connecting block 213 drives the two sets of U-shaped mounting brackets 214 to move in opposite horizontal directions. After adjusting to the appropriate position, the drive motor 211 is started and stopped. Then, depending on the thickness of the plastic film to be processed, the user manually rotates the rotating wheel 221, causing the lifting plate 222 to descend. After descending to a suitable height, the drive motor 231 is turned on, causing the linkage component 232 to rotate via the belt. The threaded rod 2321 rotates, and slider 1 233 and slider 2 234 move in opposite directions. The flexible clamping elastic element 237 gradually comes into contact with the upper surface of the plastic film. The clamping force is adjusted by controlling the distance the flexible clamping elastic element 237 descends. In addition, the curved buffer plate 238 and the buffer spring 239 work together to achieve a buffering effect on the plastic film. Furthermore, when the processed plastic film is wound up to the traction mechanism 12, the user manually rotates the worm gear 313, causing the worm 314 to rotate, which drives the moving block 315 to slide on the inner wall of the limiting groove 2 3111. The abutment rod 316 is connected to the adjusting plate 312 to adjust the angle of the adjusting plate 312, so that the curved abutment plate 323 can be precisely adjusted according to the thickness of the winding.

[0049] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0050] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A clamping mechanism for processing plastic film with a cushioning effect, comprising a base (1), characterized in that: The base (1) has a preset sliding groove (11) on each of its two outer surfaces. A traction mechanism (12) is provided on one outer surface of the base (1). A plastic film clamping mechanism (2) is movably connected to the upper end of the base (1). An auxiliary winding mechanism (3) is provided at the lower end of the traction mechanism (12). The plastic film clamping mechanism (2) includes a drive adjustment unit, a lifting limit unit and a buffer clamping unit, and the lifting limit unit and the buffer clamping unit are both located at the output end of the drive adjustment unit; The auxiliary winding mechanism (3) includes an angle adjustment unit and a film auxiliary roller pressing limit unit, wherein the film auxiliary roller pressing limit unit is disposed at the upper end of the angle adjustment unit.

2. The clamping mechanism for processing plastic film with a buffering effect according to claim 1, characterized in that: The drive adjustment unit includes a drive motor (211), the inner side of the drive motor (211) is fixedly connected to the outer surface of one end of the base (1), a bidirectional threaded rod (212) is fixedly installed on the output shaft of the drive motor (211) and is rotatably connected to the inner wall of the preset slide groove (11), the outer surface of the bidirectional threaded rod (212) is threadedly connected to a sliding connecting block (213) that is slidably connected to the inner wall of the preset slide groove (11), the outer side of the sliding connecting block (213) is provided with a U-shaped mounting bracket (214) mounted on the upper end of the base (1), and the inner side of the U-shaped mounting bracket (214) is respectively provided with an inner slide groove (224).

3. The clamping mechanism for processing plastic film with a cushioning effect according to claim 1, characterized in that: The lifting and limiting unit includes a rotating wheel (221) and a lifting horizontal plate (222). The upper outer surface of the rotating wheel (221) is threadedly connected to the upper inner wall of the U-shaped mounting bracket (214), and the lower outer surface of the rotating wheel (221) is rotatably connected to the upper inner wall of the lifting horizontal plate (222). The lower outer surface of the lifting horizontal plate (222) is provided with a limiting groove (2221) for auxiliary limiting.

4. The clamping mechanism for processing plastic film with a buffering effect according to claim 3, characterized in that: The lifting horizontal plate (222) is fixedly connected to two ends of a limiting slider (223), and the outer surface of the limiting slider (223) is slidably connected to the inner wall of the inner sliding groove (224).

5. The clamping mechanism for processing plastic film with a cushioning effect according to claim 1, characterized in that: The buffer clamping unit includes a second drive motor (231), the lower surface of the second drive motor (231) is fixedly connected to the upper surface of the lifting horizontal plate (222), a linkage component (232) is fixedly connected to the output shaft of the second drive motor (231), and a threaded rod (2321) that is rotatably connected to the inner wall of the first limiting groove (2221) is fixedly connected to the central rotating shaft of the linkage component (232).

6. The clamping mechanism for processing plastic film with a cushioning effect according to claim 5, characterized in that: A fixing block is fixedly installed on the outer surface of the centerline of the threaded rod (2321). The outer surface of the threaded rod (2321) and the fixing block are respectively threaded to slide block 1 (233) and slide block 2 (234) which are slidably connected to the inner wall of the limiting groove 1 (2221). The inner surfaces of slide block 1 (233) and slide block 2 (234) are provided with opposite threads.

7. The clamping mechanism for processing plastic film with a cushioning effect according to claim 6, characterized in that: The lower surfaces of slider one (233) and slider two (234) are respectively hinged with hinge rods (235), and the other end of the hinge rods (235) is hinged with a mounting base (236). The inner surface of the mounting base (236) is rotatably connected with a flexible clamping elastic element (237). The upper end of the mounting base (236) is fixedly installed with a buffer spring (239) that is fixedly connected to the fixed block. The buffer spring (239) has arc-shaped buffer plates (238) symmetrically distributed on both sides.

8. The clamping mechanism for processing plastic film with a cushioning effect according to claim 1, characterized in that: The angle adjustment unit includes a fixed extension plate (311), one end of the outer surface of the fixed extension plate (311) is fixedly connected to one end of the outer surface of the base (1), the upper surface of the fixed extension plate (311) is hinged with an adjustment plate (312), and the lower end of the adjustment plate (312) is hinged with an abutment rod (316).

9. A clamping mechanism for processing plastic film with a cushioning effect according to claim 8, characterized in that: The upper end of the fixed stretching plate (311) is provided with a limiting groove (3111). A worm wheel (313) is provided on the outer surface of one end of the fixed stretching plate (311). A worm (314) is fixedly connected to the output shaft of the worm wheel (313) and is rotatably connected to the inner wall of the limiting groove (3111). A moving block (315) is threadedly connected to the outer surface of the worm (314) and is slidably connected to the inner wall of the limiting groove (3111). The upper outer surface of the moving block (315) is rotatably connected to one end of the abutment rod (316).

10. A clamping mechanism for processing plastic film with a cushioning effect according to claim 1, characterized in that: The film-assisted roller pressing limiting unit includes a fixed sleeve (321) and a connecting cone (322). The lower outer surface of the connecting cone (322) is slidably connected to the inner wall of the fixed sleeve (321). A return spring (3221) is fixedly connected to the lower end of the connecting cone (322) and fixedly connected to the bottom surface of the inner cavity of the fixed sleeve (321). An arc-shaped abutment plate (323) is fixedly connected to the upper outer surface of the connecting cone (322).

Images