Film tearing structure for full-automatic film tearing machine

Abstract

The utility model relates to film tearing machine technical field discloses a film tearing structure for full -automatic film tearing machine, including U -shaped base, the top left side of U -shaped base all are established with sliding slot no.

Description

Technical Field

[0001] This utility model relates to the field of film peeling machine technology, and in particular to a film peeling structure for a fully automatic film peeling machine. Background Technology

[0002] In the process of modern industrial production, many products are covered with protective films during processing, transportation and storage to prevent surface damage. As a highly automated device, the fully automatic film peeling machine is used to peel the protective film off the product surface before subsequent processing or use. It is applied in the fields of electronic manufacturing, optical lens production and automotive parts processing. With its automated operation process, the fully automatic film peeling machine greatly improves production efficiency and significantly reduces the time and labor costs required for manual film peeling.

[0003] The film-tearing structure of the fully automatic film-tearing machine is a key component for realizing its core function. This structure mainly consists of an adsorption device, a traction mechanism, a guide component, and a power drive system. The adsorption device is responsible for firmly adsorbing the edge of the protective film, providing the starting point for the subsequent film-tearing action. Under the action of the power drive system, the traction mechanism applies tension in a specific direction, gradually tearing the protective film from the product surface. The existing film-tearing structure for fully automatic film-tearing machines uses a combination of vacuum adsorption and linear traction. The negative pressure generated by the vacuum adsorption device tightly adsorbs the protective film, effectively avoiding the problems of inaccurate positioning and weak gripping that easily occur when manually grasping the protective film. This allows the film-tearing operation to be carried out relatively stably. However, because the existing vacuum adsorption device uses a fixed-specification adsorption plate and the material characteristics of the adsorption plate are uniform, when facing protective films of different materials, thicknesses, and surface roughness, the protective film is damaged or left behind during the film-tearing process, which seriously affects the quality and efficiency of film-tearing. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a film-tearing structure for a fully automatic film-tearing machine, aiming to improve the problem in the prior art where protective films of different materials, thicknesses, and surface roughness are damaged or left behind during film tearing, which seriously affects the quality and efficiency of film tearing.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a film-tearing structure for a fully automatic film-tearing machine, comprising a U-shaped base, wherein sliding grooves are provided on the left and right sides of the top of the U-shaped base, and columns are slidably connected to the left side of the interior of each of the two sliding grooves. Grooves are provided on adjacent sides of each of the two columns, and an adjustment component is provided between adjacent grooves. A lifting blade is provided at the bottom of the adjustment component. Moving grooves are provided on the front and rear sides of the interior of the U-shaped base. Air pumps are fixedly connected to the front and rear ends of the right side of the U-shaped base. Push rods are fixedly connected to the output ends of the two air pumps, and moving blocks are fixedly connected to the left ends of the two push rods. A fixed clamping plate is fixedly connected to the right ends of adjacent sides of the two moving blocks. Sliding grooves are provided on the left ends of adjacent sides of the two moving blocks. Telescopic rods are fixedly connected to the left side of the interior of each of the two sliding grooves. A moving clamping plate is fixedly connected to the right ends of the two telescopic rods. A film-winding mechanism is provided on the top right side of the U-shaped base, and the film-winding mechanism is used to recycle the torn film.

[0006] As a further description of the above technical solution: The film rolling mechanism includes two support plates. The bottoms of the two support plates are fixedly connected to the front and rear right ends of the U-shaped base, respectively. A horizontal plate is fixedly connected to the upper middle part of an adjacent side of the two support plates. The same U-shaped frame is fixedly connected to an adjacent side of the two horizontal plates. A recycling bin is rotatably connected to the bottom inner side of the U-shaped frame. A limiting groove is opened on the front side of the U-shaped frame. A rotating rod is rotatably connected to the left front end of the U-shaped frame. The front end of the rotating rod passes through the limiting groove and is fixedly connected to a limiting plate.

[0007] As a further description of the above technical solution: The adjustment assembly includes two telescopic rods and a transmission belt. The tops of the two telescopic rods are fixedly connected to the inner top of the corresponding grooves. The bottom ends of the two telescopic rods are fixedly connected to brackets. The top of the front bracket is fixedly connected to a motor. The output end of the motor passes through the front bracket and is fixedly connected to a rotating rod. The lower middle part of the adjacent side of the two brackets is rotatably connected to a rotating rod. A rotating cylinder is fixedly connected to the outer wall of the rotating rod. Multiple lifting blades are fixedly connected at equal intervals to the outer wall of the rotating cylinder. Rollers are fixedly connected to the rear ends of the outer walls of the rotating rods and the rotating rods. The outer walls of the two rollers are connected by the transmission belt.

[0008] As a further description of the above technical solution: The U-shaped base has sliding grooves on both the upper and lower sides, and the two moving blocks are fixedly connected to sliders on their upper and lower sides.

[0009] As a further description of the above technical solution: A switch is fixedly connected to the front right side of the U-shaped base. The switch is electrically connected to telescopic rod one, the motor, the air pump, and telescopic rod two, respectively.

[0010] As a further description of the above technical solution: The bottom of the U-shaped base is fixedly connected to a support frame, and the four corners of the bottom of the support frame are all fixedly connected to support legs.

[0011] As a further description of the above technical solution: The front and rear sides of the U-shaped base are fixedly connected with triangular reinforcing plates, and the bottoms of the two triangular reinforcing plates are fixedly connected to the top of the support frame.

[0012] As a further description of the above technical solution: The right side of the movable clamp is provided with a fixing groove, and multiple rubber pads are fixedly connected at equal intervals inside the fixing groove.

[0013] This utility model has the following beneficial effects: 1. In this utility model, the sliding groove at the top of the U-shaped base cooperates with the column, the telescopic rod in the adjustment component adjusts the height of the bracket, the motor drives the rotating rod to rotate and the rotating rod 2 rotates synchronously through the transmission belt, driving the lifting knife to work. At the same time, the air pump pushes the moving block to clamp the fixed clamping plate and the moving clamping plate to clamp the object. All components work together to realize the ability to flexibly adjust the position and height of the lifting knife, accurately clamp objects of different sizes, efficiently lift and tear off the film, and improve the efficiency and quality of film tearing.

[0014] 2. In this utility model, by fixing one end of the film to the recycling bin and rotating the rotating rod, the limiting plate moves within the limiting groove. The limiting groove restricts the movement path of the limiting plate, ensuring the stability of the rotating rod's rotation trajectory. During the film tearing process, the film is continuously torn off and wrapped around the recycling bin, achieving effective recycling of the torn film and preventing the film from shifting or loosening during winding, thus ensuring a tight and neat roll. Attached Figure Description

[0015] Figure 1 This is a perspective view of the film-tearing structure for a fully automatic film-tearing machine proposed in this utility model; Figure 2 This is a side view of the film-tearing structure for a fully automatic film-tearing machine proposed in this utility model; Figure 3 for Figure 2 Enlarged view of point A in the image; Figure 4 This is a structural exploded view of the film-tearing structure for a fully automatic film-tearing machine proposed in this utility model; Figure 5 This is a structurally exploded view of the film-rolling mechanism of the film-tearing structure for a fully automatic film-tearing machine proposed in this utility model.

[0016] Legend: 1. U-shaped base; 2. Film winding mechanism; 201. Support plate; 202. Horizontal plate; 203. U-shaped frame; 204. Recycling bin; 205. Limiting groove; 206. Rotating rod; 207. Limiting plate; 3. Sliding groove one; 4. Column; 5. Groove; 6. Telescopic rod one; 7. Bracket; 8. Motor; 9. Rotating rod one; 10. Rotating rod two; 11. Rotating drum; 12. Lifting knife; 13. Roller; 14. Transmission belt; 15. Moving groove; 16. Air pump; 17. Push rod; 18. Moving block; 19. Fixed clamping plate; 20. Sliding groove two; 21. Telescopic rod two; 22. Moving clamping plate; 23. Sliding groove; 24. Slider; 25. Switch; 26. Triangular reinforcing plate; 27. Support frame; 28. Support leg; 29. ​​Fixed groove; 30. Rubber pad. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Reference Figure 1 , Figure 2 and Figure 4This utility model provides an embodiment of a film-tearing structure for a fully automatic film-tearing machine, comprising a U-shaped base 1. Sliding grooves 3 are provided on both the left and right sides of the top of the U-shaped base 1, providing tracks for the sliding of columns 4. Columns 4 are slidably connected to the left side of each of the two sliding grooves 3, allowing the columns 4 to slide along the sliding grooves 3 for easy adjustment of the position of the adjustment component. Grooves 5 are provided on adjacent sides of each of the two columns 4, providing installation space for telescopic rods 6 in the adjustment component. An adjustment component is provided between adjacent grooves 5 to adapt to different film-tearing requirements. A lifting blade 12 is provided at the bottom of the adjustment component, capable of lifting the film. Moving grooves are provided on the front and rear sides of the interior of the U-shaped base 1. 15. The moving groove 15 provides guidance for the movement of the moving block 18. Air pumps 16 are fixedly connected to the front and rear ends of the right side of the U-shaped base 1. Air pumps 16 can push push rods 17 to move. The output ends of both air pumps 16 pass through push rods 17 and are fixedly connected to them. Push rods 17 drive the moving block 18 to move within the moving groove 15. The left ends of both push rods 17 are fixedly connected to the moving block 18. The moving block 18 can drive the fixed clamping plate 19 to move. The right ends of adjacent sides of the two moving blocks 18 are fixedly connected to the same fixed clamping plate 19. The fixed clamping plate 19 cooperates with the moving clamping plate 22 to fix the object. Sliding grooves 20 are provided on the left ends of adjacent sides of the two moving blocks 18. Sliding grooves 20 provide space for the extension and retraction of the telescopic rod 21. Both sliding grooves 20 have telescopic rods 21 fixedly connected to their left sides to accommodate objects of different sizes. The right ends of both telescopic rods 21 are fixedly connected to the same movable clamping plate 22. A film winding mechanism 2 is located on the top right side of the U-shaped base 1. This mechanism can recycle the torn film, preventing film accumulation and ensuring smooth operation. The adjustment assembly includes two telescopic rods 6 and a transmission belt 14. The telescopic rods 6 can adjust the height of the support 7. The tops of the two telescopic rods 6 are fixedly connected to the top of the corresponding grooves 5. The bottom ends of both telescopic rods 6 are fixedly connected to the support 7. A motor 8 is fixedly connected to the top of the front support 7. The motor 8 drives the rotating rod 9 to rotate. The output end of the motor 8 passes through… A rotating rod 9 is fixedly connected to the front support 7. A rotating rod 10 is rotatably connected to the lower middle part of an adjacent side of the two supports 7. The rotating rod 10 can rotate under the drive of the rotating rod 9, thereby driving the rotating drum 11 to rotate. The rotating drum 11 is fixedly connected to the outer wall of the rotating rod 10. The rotating drum 11 can rotate with the rotation of the rotating rod 10, driving the lifting knife 12 to rotate. Multiple lifting knives 12 are fixedly connected at equal intervals to the outer wall of the rotating drum 11. The multiple lifting knives 12 can perform lifting operations on the film, improving the film tearing efficiency. Rollers 13 are fixedly connected to the rear ends of the outer walls of the rotating rod 9 and the rotating rod 10. The rollers 13 can cooperate with the transmission belt 14. The outer walls of the two rollers 13 are connected through the transmission belt 14, which can ensure that the rotating rod 9 and the rotating rod 10 rotate synchronously.Ensure the stability of the lifting blade 12 during operation; Specifically, when using the film-tearing structure of the fully automatic film-tearing machine, the sliding grooves 3 on the top left and right sides are used for the sliding connection of the column 4. The grooves 5 on the column 4 provide an installation position for the adjustment components. The telescopic rod 6 can adjust the height of the bracket 7. The motor 8 is installed on the top of the front bracket 7. After starting, it drives the rotating rod 9 to rotate. The rotating rod 9 and the rotating rod 10 are connected through the roller 13 and the transmission belt 14, so that the rotating rod 10 rotates synchronously. The rotating drum 11 on the rotating rod 10 rotates accordingly, driving the equidistant fixed lifting blades 12 to work. The lifting blades 12 are used to lift the film. The moving grooves on the front and rear sides inside the U-shaped base 1 15 works in conjunction with air pump 16. The output end of air pump 16 is connected to push rod 17, which pushes moving block 18 to slide in moving groove 15. Moving block 18 drives fixed clamping plate 19 to move, which is used to fix the object to be peeled. Telescopic rod 21 in sliding groove 20 on moving block 18 is connected to moving clamping plate 22, which can be adjusted and clamped according to the size of the film. First, adjust the position of the adjustment component through sliding groove 3 and column 4. Start motor 8 to make lifting knife 12 rotate. Lifting knife 12 contacts the film and lifts it. At the same time, air pump 16 pushes fixed clamping plate 19 and moving clamping plate 22 to clamp the object and move to complete the film peeling operation.

[0019] Reference Figure 2 and Figure 5 The film-rolling mechanism 2 includes two support plates 201. The bottoms of the two support plates 201 are fixedly connected to the front and rear right ends of the U-shaped base 1, respectively. This allows the film-rolling mechanism 2 to be securely installed on the U-shaped base 1, enabling it to work in conjunction with the film-tearing structure. A horizontal plate 202 is fixedly connected to the upper middle part of each adjacent side of the two support plates 201. The horizontal plate 202 connects the two support plates 201, enhancing the overall integrity and strength of the structure. A U-shaped frame 203 is fixedly connected to each adjacent side of the two horizontal plates 202. The U-shaped frame 203 provides installation space and support for components such as the recycling bin 204. The inner bottom of the U-shaped frame 203 is rotatably connected to... There is a recycling bin 204, which can roll up the torn film to realize the film recycling function. The front side of the U-shaped frame 203 has a limiting groove 205, which can limit the rotation range of the rotating rod 206 to ensure that it rotates along the prescribed trajectory. The rotating rod 206 is rotatably connected to the front left end of the U-shaped frame 203. The rotating rod 206 can rotate around the connection point, driving the limiting plate 207 to move. The front end of the rotating rod 206 passes through the limiting groove 205 and is fixedly connected to the limiting plate 207. Under the limitation of the limiting groove 205, the limiting plate 207 can prevent the film from shifting or loosening during the winding process, and ensure the neatness of the rolled film. Specifically, one end of the film to be recycled is fixed to the recycling bin 204. The rotating rod 206 can rotate around the connection point on the left side of the front side of the U-shaped frame 203. The limiting plate 207 fixed at the front end of the rotating rod 206 moves accordingly. Since the limiting plate 207 passes through the limiting groove 205, the limiting groove 205 restricts the movement path of the limiting plate 207, ensuring that the rotating rod 206 can maintain a stable trajectory when rotating. As the film is continuously torn off during the tearing process, the film will gradually wrap around the recycling bin 204. The movement of the limiting plate 207 in the limiting groove 205 can prevent the film from shifting or loosening during the winding process, ensuring the tightness and neatness of the film roll.

[0020] Reference Figure 1 , Figure 3 and Figure 4 The U-shaped base 1 has grooves 23 on both its upper and lower sides to ensure the stability and straightness of the movement of the moving blocks 18. Slider blocks 24 are fixedly connected to the upper and lower sides of both moving blocks 18. The sliders 24, in conjunction with the grooves 23, ensure that the moving blocks 18 can slide smoothly and precisely within the U-shaped base 1, thereby driving the fixed clamping plate 19 and the moving clamping plate 22 to move. A switch 25 is fixedly connected to the front right side of the U-shaped base 1. The switch 25 serves as the control center, allowing operators to centrally control the key components of the equipment. The switch 25 is electrically connected to the first telescopic rod 6, the motor 8, the air pump 16, and the second telescopic rod 21. Through the switch 25, operators can flexibly start, stop, or adjust the working status of these components, achieving overall control of the film-tearing process. A support frame 27 is fixedly connected to the bottom of the U-shaped base 1. The support frame 27 bears the weight of the U-shaped base 1 and the entire film-tearing structure, enhancing the load-bearing capacity of the bottom of the equipment. Support legs 28 are fixedly connected to the four corners of the bottom of the 27. The support legs 28 increase the contact area between the equipment and the ground, improve the stability of the equipment placement, and prevent the equipment from shifting or tipping over due to vibration or external force during operation. Triangular reinforcing plates 26 are fixedly connected to the front and rear sides of the U-shaped base 1. The triangular reinforcing plates 26 utilize the stability of triangles to strengthen the connection between the U-shaped base 1 and the support frame 27. The bottoms of the two triangular reinforcing plates 26 are fixedly connected to the top of the support frame 27, further ensuring the stability of the overall structure of the equipment and reducing the risk of deformation or loosening at the connection due to force. A fixing groove 29 is provided on the right side of the movable clamping plate 22. The fixing groove 29 provides space for installing rubber pads 30, so that they can be firmly installed on the movable clamping plate 22. Multiple rubber pads 30 are fixedly connected at equal intervals inside the fixing groove 29. The rubber pads 30 increase the friction with the clamped object and prevent the object from sliding during clamping. Specifically, when the air pump 16 pushes the push rod 17 to move the moving block 18, the slider 24 slides in the groove 23 to ensure the stability of the moving block 18 during movement and prevent swaying or deviation. The operator can start or stop each component by operating the switch 25, and can also reasonably control the operating status of each component according to different stages and needs of the film tearing work. The support frame 27 enhances the support strength and stability of the bottom of the U-shaped base 1. The legs 28 are distributed at the four corners, expanding the support area and enabling the equipment to be placed stably on the work site. The connection strength between the U-shaped base 1 and the support frame 27 is enhanced. During the operation of the equipment, it can effectively disperse and bear stress from all directions. When the moving clamp 22 and the fixed clamp 19 cooperate to clamp the object, the rubber pad 30 can increase the friction with the surface of the object and prevent the object from sliding during clamping.

[0021] Working principle: When using the film-tearing structure of the fully automatic film-tearing machine, the sliding grooves 3 on the top left and right sides are used for the sliding connection of the column 4. The grooves 5 on the column 4 provide the installation position for the adjustment components. The telescopic rod 6 can adjust the height of the bracket 7. The motor 8 is installed on the top of the front bracket 7. After starting, it drives the rotating rod 9 to rotate. The rotating rod 9 and the rotating rod 10 are connected by the roller 13 and the transmission belt 14, so that the rotating rod 10 rotates synchronously. The rotating drum 11 on the rotating rod 10 rotates accordingly, driving the equidistant fixed lifting blades 12 to work. The lifting blades 12 are used to lift the film. The moving grooves on the front and rear sides inside the U-shaped base 1 15 works in conjunction with air pump 16. The output end of air pump 16 is connected to push rod 17, which pushes moving block 18 to slide in moving groove 15. Moving block 18 drives fixed clamping plate 19 to move, which is used to fix the object to be peeled. Telescopic rod 21 in sliding groove 20 on moving block 18 is connected to moving clamping plate 22, which can be adjusted and clamped according to the size of the film. First, adjust the position of the adjustment component through sliding groove 3 and column 4. Start motor 8 to make lifting knife 12 rotate. Lifting knife 12 contacts the film and lifts it. At the same time, air pump 16 pushes fixed clamping plate 19 and moving clamping plate 22 to clamp the object and move to complete the peeling operation. The membrane to be recycled is fixed at one end to the recycling bin 204. The rotating rod 206 can rotate around the connection point on the left side of the front side of the U-shaped frame 203. The limiting plate 207 fixed at the front end of the rotating rod 206 moves accordingly. Since the limiting plate 207 passes through the limiting groove 205, the limiting groove 205 restricts the movement path of the limiting plate 207, ensuring that the rotating rod 206 can maintain a stable trajectory when rotating. As the membrane is continuously torn off during the tearing process, the membrane will gradually wrap around the recycling bin 204. The movement of the limiting plate 207 in the limiting groove 205 can prevent the membrane from shifting or loosening during the winding process, ensuring the tightness and neatness of the rolled film.

[0022] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model 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 utility model should be included within the protection scope of the present utility model.

Claims

1. A film-tearing structure for a fully automatic film-tearing machine, comprising a U-shaped base (1), characterized in that: The top left and right sides of the U-shaped base (1) are provided with sliding grooves (3), and the left side of the two sliding grooves (3) are slidably connected with columns (4). The adjacent sides of the two columns (4) are provided with grooves (5), and the adjacent grooves (5) are provided with adjustment components. The bottom of the adjustment components is provided with lifting blades (12). The front and rear sides of the U-shaped base (1) are provided with moving grooves (15). The front and rear ends of the right side of the U-shaped base (1) are fixedly connected with air pumps (16). The output ends of the two air pumps (16) pass through push rods (17) and are fixedly connected with push rods. The left end of each of the two push rods (17) is fixedly connected to a moving block (18). The right end of each of the two moving blocks (18) is fixedly connected to the same fixed clamp (19). The left end of each of the two moving blocks (18) is provided with a sliding groove (20). The left side of each of the two sliding grooves (20) is fixedly connected to a telescopic rod (21). The right end of each of the two telescopic rods (21) is fixedly connected to the same moving clamp (22). A film winding mechanism (2) is provided on the top right side of the U-shaped base (1). The film winding mechanism (2) is used to recycle the torn film.

2. The film-tearing structure for a fully automatic film-tearing machine according to claim 1, characterized in that: The film rolling mechanism (2) includes two support plates (201). The bottoms of the two support plates (201) are fixedly connected to the front and rear right ends of the U-shaped base (1). A horizontal plate (202) is fixedly connected to the upper middle part of the adjacent side of the two support plates (201). The same U-shaped frame (203) is fixedly connected to the adjacent side of the two horizontal plates (202). A recycling bin (204) is rotatably connected to the bottom inner side of the U-shaped frame (203). A limiting groove (205) is opened on the front side of the U-shaped frame (203). A rotating rod (206) is rotatably connected to the left front end of the U-shaped frame (203). The front end of the rotating rod (206) passes through the limiting groove (205) and is fixedly connected to a limiting plate (207).

3. The film-tearing structure for a fully automatic film-tearing machine according to claim 1, characterized in that: The adjustment assembly includes two telescopic rods (6) and a transmission belt (14). The tops of the two telescopic rods (6) are fixedly connected to the top of the inner side of the corresponding groove (5). The bottom ends of the two telescopic rods (6) are fixedly connected to brackets (7). The top of the front bracket (7) is fixedly connected to a motor (8). The output end of the motor (8) passes through the front bracket (7) and is fixedly connected to a rotating rod (9). The lower middle part of the adjacent side of the two brackets (7) is rotatably connected to a rotating rod (10). The outer wall of the rotating rod (10) is fixedly connected to a rotating cylinder (11). The outer wall of the rotating cylinder (11) is fixedly connected to multiple lifting blades (12) at equal intervals. The rear ends of the outer walls of the rotating rods (9) and the rotating rods (10) are fixedly connected to rollers (13). The outer walls of the two rollers (13) are connected through the transmission belt (14).

4. The film-tearing structure for a fully automatic film-tearing machine according to claim 1, characterized in that: The U-shaped base (1) has grooves (23) on both the upper and lower sides, and sliders (24) are fixedly connected to the upper and lower sides of the two moving blocks (18).

5. The film-tearing structure for a fully automatic film-tearing machine according to claim 1, characterized in that: A switch (25) is fixedly connected to the front right side of the U-shaped base (1). The switch (25) is electrically connected to the first telescopic rod (6), the motor (8), the air pump (16), and the second telescopic rod (21).

6. The film-tearing structure for a fully automatic film-tearing machine according to claim 1, characterized in that: The bottom of the U-shaped base (1) is fixedly connected to a support frame (27), and the four corners of the bottom of the support frame (27) are fixedly connected to support legs (28).

7. The film-tearing structure for a fully automatic film-tearing machine according to claim 6, characterized in that: The front and rear sides of the U-shaped base (1) are fixedly connected with triangular reinforcing plates (26), and the bottoms of the two triangular reinforcing plates (26) are fixedly connected to the top of the support frame (27).

8. The film-tearing structure for a fully automatic film-tearing machine according to claim 1, characterized in that: The right side of the movable clamp (22) is provided with a fixing groove (29), and multiple rubber pads (30) are fixedly connected at equal intervals inside the fixing groove (29).

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