Uniform gluing device for mica paper production

Abstract

The utility model relates to the technical field of mica paper production, and discloses a uniform gluing device for mica paper production, which comprises a supporting table, the bottom end of the supporting table is fixedly connected with a supporting assembly for supporting the device, and the left side of the top end of the supporting table is fixedly connected with two supporting plates. And containing holes are formed in the sides, close to each other, of the two supporting plates, sliding rods are slidably connected to the inner walls of the top ends of the containing holes, strong springs sleeve the sliding rods, connecting blocks are fixedly connected to the bottom ends of the sliding rods, and pressing rollers are rotatably connected to the sides, close to each other, of the two connecting blocks. According to the mica paper coating device, the pressure applied to mica paper by the compression roller is more uniform, and the condition that the pressure borne by part of areas is larger and the pressure borne by other areas is smaller is avoided, so that uniform coating of a glue solution is facilitated, the product quality is improved, and the flexibility of the whole device is improved through the adjustability of the glue storage box.

Description

Technical Field

[0001] The utility model relates to the technical field of mica paper production, in particular to a uniform glue coating device for mica paper production. Background Technique

[0002] Mica paper is a high-performance insulating material made from mica as the main raw material through a series of processing technologies. Mica paper has many excellent properties, such as good insulation performance, high-temperature resistance, chemical corrosion resistance, etc. During the production process of mica paper, a uniform glue coating device is used to ensure that the glue liquid is evenly distributed on the mica paper, so that the performance of each part of the mica paper is consistent, avoiding local weak points, thereby improving the overall insulation performance, strength and stability, ensuring the flatness and smoothness of the mica paper, reducing surface defects, and improving the appearance quality.

[0003] Chinese Patent CN217569453U discloses an efficient glue coating device for mica tape production, including: a frame, a material box, a lifting assembly, a flipping frame, a flipping assembly, a glue gun, a driving assembly, a glue storage tank and a stirring assembly. The material box is arranged below the frame in a liftable manner, and the material box is lifted under the drive of the lifting assembly. The flipping frame is arranged above the material box in a flippable manner, and a plurality of suction cups are evenly arranged on its upper surface. The plurality of suction cups are connected to a vacuum pump through an air pipe, and a vacuum pump is arranged below one of the suction cups. The plurality of suction cups are used to adsorb mica paper; the flipping assembly drives the flipping frame to flip, and the glue gun is movably arranged above the flipping frame under the drive of the driving assembly; the glue storage tank is provided with a glue inlet, and the glue storage tank is connected to the glue gun through a first pipeline; the stirring assembly is arranged in the glue storage tank. The utility model has the advantages of smooth glue coating, automatic feeding and labor saving.

[0004] However, in this technical solution, "a stirring shaft 51 is arranged in the glue storage tank 14, the stirring shaft 51 rotates under the drive of a third motor 53, and a plurality of groups of stirring blades 52 are arranged on the stirring shaft 51, which can expand the stirring range of the glue material. Two scraping plates 54 are arranged on both sides of the stirring shaft 51. On the one hand, the scraping plates 54 can stir the glue material at the edge of the glue tank, and the brush 55 arranged outside the scraping plates 54 can remove the glue material on the inner wall of the glue storage tank 14, saving raw materials. The outer surfaces of the stirring shaft 51, the stirring blades 52 and the scraping plates 54 are all coated with an anti-rust coating to extend the service life of the stirring assembly 50". However, when coating the mica paper, this process is realized by the cooperation of the mica paper being conveyed between the pressure roller and the glue coating roller. In this process, due to the uneven pressure exerted by the pressure roller, some areas of the mica paper will be under greater pressure when passing through, and the glue liquid will be over-extruded or displaced, while in other areas the pressure is smaller and the glue liquid is insufficiently applied, resulting in a decline in the quality of the produced mica paper. Therefore, in view of the above deficiencies, a uniform glue coating device for mica paper production is proposed. Content of the Utility Model

[0005] The purpose of the present utility model is to solve the deficiencies existing in the prior art, and a uniform glue coating device for mica paper production is proposed, aiming to improve the problem of uneven glue coating in the prior art, which leads to the decline of the quality of mica paper products.

[0006] To achieve the above purpose, the present utility model provides the following technical solutions:

[0007] A uniform glue coating device for mica paper production, including a support table, the bottom end of the support table is fixedly connected with a support component for supporting the device, the left side of the top end of the support table is fixedly connected with two support plates, accommodating holes are opened on the adjacent sides of the two support plates, a sliding rod is slidably connected to the inner wall of the top end of the accommodating hole, a strong spring is sleeved outside the sliding rod, the bottom end of the sliding rod is fixedly connected with a connecting block, the adjacent sides of the two connecting blocks are rotatably connected with a pressure roller, the rear end of the rear support plate is fixedly connected with a transmission component for transmitting driving force, the right side of the top end of the support table is fixedly connected with a C-shaped plate, the front end of the transmission component is fixedly connected with a rotating roller, the front end of the transmission component is fixedly connected with a glue coating roller, the left side of the bottom end of the support table is fixedly connected with two extended blocks, a motor two is fixedly connected to the inside of the top end of the front extended block, the driving end of the motor two is fixedly connected with a threaded rod, a threaded block is slidably connected to the inside of the extended block, the left end of the threaded block is fixedly connected with an adapter block, and the top ends of the two adapter blocks are fixedly connected with an accommodating component for storing glue liquid.

[0008] Further, the support component includes a plurality of support legs, the bottom ends of the support legs are fixedly connected with suction cups, each support leg is connected through a connecting rod, and the top ends of the plurality of support legs are fixedly connected to the bottom end of the support table.

[0009] Further, the top end of the sliding rod is fixedly connected with a stop disk, one end of the strong spring is fixedly connected to the inner side of the accommodating hole, the other end of the strong spring is fixedly connected to the top end of the connecting block, and the outside of the connecting block is slidably connected to the inside of the accommodating hole.

[0010] Further, the transmission component includes a motor one, the front end of the motor one is fixedly connected to the rear end of the rear support plate, the driving end of the motor one is fixedly connected with a driving wheel, the rear end of the C-shaped plate is rotatably connected with a driven wheel, a belt pulley is sleeved outside the driving wheel and the driven wheel, the front end of the driven wheel is fixedly connected to the rear end of the rotating roller, and the front end of the driving wheel is fixedly connected to the rear end of the glue coating roller.

[0011] Further, the outer part of the pressure roller is rotatably connected to the adjacent sides of the two support plates, the outer part of the glue - applying roller is rotatably connected to the adjacent sides of the two support plates, the outer part of the threaded rod is rotatably connected to the inside of the front extension block, and the inside of the front threaded block is threadedly connected to the outer part of the threaded rod.

[0012] Further, a fixing rod is fixedly connected to the inside of the rear extension block, the inside of the rear threaded block is slidably connected to the outer part of the fixing rod, and the outer part of the connecting block is slidably connected to the left inner wall of the extension block.

[0013] Further, the accommodating assembly includes a gasket, the bottom end of the gasket is fixedly connected to the top ends of the two connecting blocks, and a glue storage box is fixedly connected to the top end of the gasket.

[0014] Further, an auxiliary roller is rotatably connected to the inside of the C - shaped plate, two movable holes are opened in the inside of the C - shaped plate, a plurality of telescopic springs are arranged in the movable holes, a force - transmitting plate is slidably connected to the inside of the movable holes, a cleaning brush is fixedly connected to one side of the force - transmitting plate, two accommodating plates are fixedly connected to the middle of the top end of the support table, an expansion hole is opened in the inside of the accommodating plate, an electric push rod is fixedly connected to the top end of the accommodating plate, the driving end of the electric push rod is rotatably connected to a movable rod, a rotating rod is fixedly connected to the inside of the expansion hole, the adjacent sides of the two movable rods are rotatably connected to an adjusting roller, the outer part of the movable rod is rotatably connected to the inside of the expansion hole, and the inside of the movable rod is rotatably connected to the outer part of the rotating rod.

[0015] The beneficial effects of the present utility model are as follows:

[0016] (1) In the present utility model, under the elastic support of the strong spring, the pressure exerted by the pressure roller on the mica paper is more uniform, avoiding the situation that some areas are under greater pressure while some other areas are under less pressure, thus contributing to the uniform application of the glue and improving the quality of the product. And through the adjustability of the glue storage box, the flexibility of the overall device is increased.

[0017] (2) In the present utility model, by starting the electric push rod to drive the movable rod to move inside the expansion hole, the tightness of the mica paper is adjusted, which can ensure that the mica paper remains flat and stable during the conveying process, avoiding wrinkles or slack. And through the cleaning by the brush, impurities and dust on the surface of the mica paper can be removed, enabling the glue to adhere more evenly to the clean and flat surface of the mica paper.

[0018] In summary, the present utility model has the advantages of uniform coating, increased flexibility, adjustable tension, and the ability to clean the mica paper. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 The perspective view of a uniform glue coating device for mica paper production proposed by the present utility model;

[0020] Figure 2 The schematic structural view of the rotating roller of a uniform glue coating device for mica paper production proposed by the present utility model;

[0021] Figure 3 The schematic structural view of the support plate of a uniform glue coating device for mica paper production proposed by the present utility model;

[0022] Figure 4 The schematic structural view of the extended long block of a uniform glue coating device for mica paper production proposed by the present utility model;

[0023] Figure 5 The schematic structural view of the C-shaped plate of a uniform glue coating device for mica paper production proposed by the present utility model;

[0024] Figure 6 The schematic structural view of the receiving plate of a uniform glue coating device for mica paper production proposed by the present utility model. Specific embodiments

[0025] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0026] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation of the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, "a plurality" means two or more unless otherwise specifically defined.

[0027] Embodiment 1

[0028] Refer to Figure 1 - Figure 3 , an embodiment provided by the present utility model: a uniform gluing device for mica paper production, including a support table 1. The support table 1 provides a stable installation foundation for the entire device, ensuring that each component can be accurately installed and work together. The bottom end of the support table 1 is fixedly connected with a support component for supporting the device, which can firmly support the entire device on the ground or workbench, ensuring that the device does not shake or tilt during operation. The support component includes a plurality of support legs 2, making the support more uniform and stable. The bottom end of the support leg 2 is fixedly connected with a suction cup 3, which can increase the adsorption force with the contact surface, further improving the stability of the device and preventing displacement during work. Each support leg 2 is connected by a connecting rod 4, and the connecting rod 4 enhances the connection strength between the support legs 2, making the entire support structure more stable. The top ends of the plurality of support legs 2 are fixedly connected to the bottom end of the support table 1. The left side of the top end of the support table 1 is fixedly connected with two support plates 5, providing a fixed position and support for the subsequent component installation. A receiving hole 6 is provided on the adjacent side of the two support plates 5, providing additional space. The inner wall of the top end of the receiving hole 6 is slidably connected with a sliding rod 7 for providing force. A strong spring 9 is sleeved outside the sliding rod 7, providing spring force and restoring force. The bottom end of the sliding rod 7 is fixedly connected with a connecting block 10 for transmitting the spring force of the strong spring 9. The top end of the sliding rod 7 is fixedly connected with a stop disk 8, which can prevent the sliding rod 7 from disengaging from the receiving hole 6. One end of the strong spring 9 is fixedly connected to the inner side of the receiving hole 6, ensuring that the strong spring 9 has a fixed installation point and can play a stable role. The other end of the strong spring 9 is fixedly connected to the top end of the connecting block 10. The outside of the connecting block 10 is slidably connected to the inside of the receiving hole 6, enabling the connecting block 10 to move smoothly up and down in the receiving hole 6. A pressure roller 11 is rotatably connected to the adjacent side of the two connecting blocks 10, and the pressure roller 11 can apply pressure to the mica paper to keep it flat during the gluing process.

[0029] Refer to Figure 2 - Figure 4, the outer part of the pressing roller 11 is rotatably connected to the adjacent sides of the two support plates 5. This rotational connection method of the pressing roller 11 can ensure its flexible rotation during operation, apply uniform pressure to the mica paper. The rear end of the rear support plate 5 is fixedly connected to a transmission component for transmitting driving force. This fixed connection ensures the stability and reliability of power transmission. The transmission component includes a first motor 12, and the front end of the first motor 12 is fixedly connected to the rear end of the rear support plate 5. This fixed connection method ensures that the first motor 12 will not be displaced during operation and stably outputs power. The driving end of the first motor 12 is fixedly connected to a driving wheel 13. The rear end of the C-shaped plate 14 is rotatably connected to a driven wheel 15. A belt pulley 16 is sleeved outside the driving wheel 13 and the driven wheel 15. The belt pulley 16 ensures smooth and efficient power transmission between the driving wheel 13 and the driven wheel 15. The front end of the driven wheel 15 is fixedly connected to the rear end of the rotating roller 17 to realize the conveying and auxiliary gluing of the mica paper. The front end of the driving wheel 13 is fixedly connected to the rear end of the gluing roller 18, enabling the gluing roller 18 to obtain stable power for gluing work. The outer part of the gluing roller 18 is rotatably connected to the adjacent sides of the two support plates 5. This rotational connection enables the gluing roller 18 to evenly apply the glue liquid to the mica paper. The top right side of the support table 1 is fixedly connected to a C-shaped plate 14. The C-shaped plate 14 provides support and protection for the installation and operation of related components. The front end of the transmission component is fixedly connected to a rotating roller 17 to ensure that the rotating roller 17 can stably receive power and rotate. The front end of the transmission component is fixedly connected to a gluing roller 18 to ensure that the gluing roller 18 can accurately perform the gluing operation. The bottom left side of the support table 1 is fixedly connected to two extended blocks 19, and the motor 20 is fixedly connected to the inside of the top of the front extended block 19.

[0030] Refer to Figure 1 , Figure 4, a threaded rod 21 is fixedly connected to the driving end of the second motor 20. A threaded block 22 is slidably connected inside the extended long block 19, ensuring the linearity and stability of its movement. The threaded rod 21 is rotatably connected to the inside of the front extended long block 19, and the front threaded block 22 is threadedly connected to the outside of the threaded rod 21, enabling the rotation of the threaded rod 21 to be converted into the linear movement of the threaded block 22. The left end of the threaded block 22 is fixedly connected to a connecting block 23. The top ends of the two connecting blocks 23 are fixedly connected to a containing assembly for storing glue, which can store the glue safely and stably and provide a continuous supply of glue for the glue application work. The containing assembly includes a gasket 24. The bottom end of the gasket 24 is fixedly connected to the top ends of the two connecting blocks 23. The top end of the gasket 24 is fixedly connected to a glue storage box 25, which can effectively store the glue and ensure the smooth progress of the glue application work. The gasket 24 plays a role in buffering and increasing the connection stability, reducing the impact of vibration on the glue storage box 25. A fixing rod 26 is fixedly connected to the inside of the rear extended long block 19. The rear threaded block 22 is slidably connected to the outside of the fixing rod 26. The outside of the connecting block 23 is slidably connected to the left inner wall of the extended long block 19. This sliding connection method enables the connecting block 23 to move smoothly within the extended long block 19 without obstruction.

[0031] Refer to Figure 1 , Figure 2 and 6 , an auxiliary roller 27 is rotatably connected inside the C-shaped plate 14. The rotation connection of the auxiliary roller 27 helps the mica paper to be more smooth during the conveying process and reduces the resistance. Two moving holes 28 are opened inside the C-shaped plate 14. A plurality of telescopic springs 29 are arranged inside the moving holes 28. The telescopic springs 29 can provide an elastic restoring force, enabling the subsequent components to adjust adaptively. A force transmission plate 30 is slidably connected inside the moving holes 28. One side of the force transmission plate 30 is fixedly connected to a cleaning brush 31, which can effectively remove the impurities on the surface of the mica paper and prepare for the glue application. Two containing plates 32 are fixedly connected to the middle of the top end of the support table 1. An extended hole 33 is opened inside the containing plate 32. An electric push rod 34 is fixedly connected to the top end of the containing plate 32. The driving end of the electric push rod 34 is rotatably connected to a movable rod 35. This rotation connection method enables the movable rod 35 to respond flexibly to the drive of the electric push rod 34. A rotating rod 36 is fixedly connected to the inside of the extended hole 33. The adjacent sides of the two movable rods 35 are rotatably connected to an adjusting roller 37, which can adjust the tension of the mica paper and ensure the glue application effect. The outside of the movable rod 35 is rotatably connected to the inside of the extended hole 33. This rotation connection ensures that the movable rod 35 will not be subject to excessive frictional resistance during the movement process. The inside of the movable rod 35 is rotatably connected to the outside of the rotating rod 36. Mica paper production technology.

[0032] Working steps

[0033] First, the bottom end of the support table 1 is supported by multiple support legs 2. The suction cups 3 at the bottom ends of the support legs 2 enhance the stability of the device. The connecting rods 4 connect the support legs 2, further improving the firmness of the support. On the left side of the top end of the support table 1, two support plates 5 are fixed. A sliding rod 7 is slidably connected in the accommodation hole 6 opened on the adjacent side thereof. The stop plate 8 at the top end of the sliding rod 7 cooperates with the sleeved strong spring 9. One end of the strong spring 9 is connected to one side inside the accommodation hole 6, and the other end is connected to the top end of the connecting block 10. The connecting block 10 is slidably connected outside inside the accommodation hole 6. The pressing roller 11 rotatably connected to the adjacent side of the connecting block 10 can apply a uniform pressure to the mica paper under the elastic support of the strong spring9. In this way, even if there are slight changes in the thickness or flatness of the mica paper during the conveying process, the telescopic characteristics of the strong spring9 can automatically adjust the pressure of the pressing roller11 to ensure that the mica paper at different positions can receive a relatively stable and appropriate pressure, thereby laying a foundation for subsequent uniform gluing. The motor one 12 located at the rear end of the rear support plate 5 serves as the power source of the transmission component. The driving end thereof is connected to the driving wheel 13, which is connected to the driven wheel 15 through the pulley 16. The rotating roller17 connected to the front end of the driven wheel 15 and the glue applicator roller 18 connected to the front end of the driving wheel 13 work together under the drive of the motor one12. The glue applicator roller18 is responsible for evenly applying the glue liquid on the mica paper, and the rotating roller17 plays a role in assisting the conveying and adjusting the position of the mica paper. On the right side of the top end of the support table1, the auxiliary roller27 rotatably connected inside the C-shaped plate 14 helps the smooth conveying of the mica paper. At the same time, the telescopic spring29 uses its own spring force to push the force transmission plate 30, so that the cleaning brush 31 can closely contact the surface of the mica paper to be glued, thereby effectively removing impurities and dust and ensuring that the glue liquid can be evenly and firmly attached to the clean and flat mica paper surface.

[0034] Among the two extended long blocks 19 on the left side of the bottom end of the support table1, the motor two20 inside the front extended long block 19 drives the threaded rod21 to rotate, thereby driving the threaded block 2 to slide inside the extended long block 9. Since the left end of the threaded block 22 is fixedly connected to the connection block 23, and the top end of the connection block 23 is fixedly connected to the accommodation component, that is, the structure composed of the gasket and the glue storage box 25, the position of the glue storage box 25 can be adjusted by driving the motor two, increasing the flexibility and applicability of the device.

[0035] In the middle of the top end of the support table 1, expansion holes 33 are formed inside the two fixed receiving plates 32. The movable rod 35, whose driving end is rotatably connected to the electric push rod 34 at the top end of the receiving plate 32, moves inside the expansion hole 33. The inside of the movable rod 35 is rotatably connected to the outside of the rotating rod 36. The adjusting roller 37, which is rotatably connected to the adjacent sides of the two movable rods 35, can adjust the tension of the mica paper under the action of the electric push rod 34, enabling the mica paper to maintain a flat and stable state during transportation, avoiding wrinkles or slack, and creating good conditions for uniform gluing.

[0036] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims

1. A uniform glue coating device for mica paper production, comprising a support table, characterized in that: A support component for supporting the device is fixedly connected to the bottom end of the support platform. Two support plates are fixedly connected to the left side of the top end of the support platform. Accommodation holes are provided on the adjacent sides of the two support plates. A sliding rod is slidably connected to the inner wall of the top end of the accommodation hole. A strong spring is sleeved on the outer part of the sliding rod. A connecting block is fixedly connected to the bottom end of the sliding rod. A pressing roller is rotatably connected to the adjacent sides of the two connecting blocks. A transmission component for transmitting driving force is fixedly connected to the rear end of the rear support plate. A C-shaped plate is fixedly connected to the right side of the top end of the support platform. A rotating roller is fixedly connected to the front end of the transmission component. A glue application roller is fixedly connected to the front end of the transmission component. Two extended long blocks are fixedly connected to the left side of the bottom end of the support platform. A second motor is fixedly connected to the inner part of the top end of the front extended long block. A threaded rod is fixedly connected to the driving end of the second motor. A threaded block is slidably connected to the inner part of the extended long block. A connecting block is fixedly connected to the left end of the threaded block. An accommodation component for storing glue is fixedly connected to the top ends of the two connecting blocks.

2. The uniform glue coating device for mica paper production according to claim 1, characterized in that: The support component includes a plurality of support legs. A suction cup is fixedly connected to the bottom end of each support leg. Each support leg is connected by a connecting rod. The top ends of the plurality of support legs are fixedly connected to the bottom end of the support platform.

3. The uniform gluing device for mica paper production according to claim 1, characterized in that: A stop disk is fixedly connected to the top end of the sliding rod. One end of the strong spring is fixedly connected to one side inside the accommodation hole. The other end of the strong spring is fixedly connected to the top end of the connecting block. The outer part of the connecting block is slidably connected inside the accommodation hole.

4. The uniform glue coating device for mica paper production according to claim 1, characterized in that: The transmission component includes a first motor. The front end of the first motor is fixedly connected to the rear end of the rear support plate. A driving wheel is fixedly connected to the driving end of the first motor. A driven wheel is rotatably connected to the rear end of the C-shaped plate. A pulley is sleeved on the outer parts of the driving wheel and the driven wheel. The front end of the driven wheel is fixedly connected to the rear end of the rotating roller. The front end of the driving wheel is fixedly connected to the rear end of the glue application roller.

5. A uniform glue coating device for mica paper production according to claim 1, characterized in that: The outer part of the pressing roller is rotatably connected to the adjacent sides of the two support plates. The outer part of the glue application roller is rotatably connected to the adjacent sides of the two support plates. The outer part of the threaded rod is rotatably connected to the inner part of the front extended long block. The inner part of the front threaded block is threadedly connected to the outer part of the threaded rod.

6. The uniform glue coating device for mica paper production according to claim 1, wherein: A fixed rod is fixedly connected to the inner part of the rear extended long block. The inner part of the rear threaded block is slidably connected to the outer part of the fixed rod. The outer part of the connecting block is slidably connected to the left inner wall of the extended long block.

7. The uniform glue coating device for mica paper production according to claim 1, wherein: The accommodation component includes a gasket. The bottom end of the gasket is fixedly connected to the top ends of the two connecting blocks. A glue storage box is fixedly connected to the top end of the gasket.

8. The uniform glue coating device for mica paper production according to claim 1, characterized in that: An auxiliary roller is rotatably connected inside the C-shaped plate. Two movable holes are formed inside the C-shaped plate. A plurality of telescopic springs are arranged inside the movable holes. A force transmission plate is slidably connected inside the movable holes. A cleaning brush is fixedly connected to one side of the force transmission plate. Two receiving plates are fixedly connected to the middle of the top end of the support table. An expansion hole is formed inside the receiving plate. An electric push rod is fixedly connected to the top end of the receiving plate. The driving end of the electric push rod is rotatably connected to a movable rod. A rotating rod is fixedly connected inside the expansion hole. The adjacent sides of the two movable rods are rotatably connected to an adjusting roller. The outer part of the movable rod is rotatably connected inside the expansion hole. The inner part of the movable rod is rotatably connected to the outer part of the rotating rod.

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