Device for removing paperboard waste

Abstract

The utility model discloses a device for removing paperboard waste materials, which mainly comprises a transmission component, a waste material collecting tank is arranged in the rack, a waste material discharge port communicated with the waste material collecting tank is arranged on the side wall of the lower part of the rack, and a conveying mechanism for conveying paperboards is arranged at the notch of the waste material collecting tank; the cleaning assembly is arranged above the conveying assembly and used for blowing air to the conveying belt; and the collecting assembly comprises a driving roller and a driven roller which are rotationally installed in the rack, a conveying belt is in transmission connection between the driving roller and the driven roller, the tail end of the conveying belt corresponds to the waste discharging opening, and a collecting box used for collecting waste is further arranged below the tail end of the conveying belt. According to the device for removing the paperboard waste materials, the waste materials can be collected and guided in real time, so that the accumulation phenomenon of the waste materials in the device is greatly reduced, and the operation stability and reliability of the device are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of carton processing, in particular to a device for removing waste cardboard. Background Art

[0002] Carton is a packaging product, widely used in various industries. Carton is made of cardboard. In industries such as cardboard processing, chip removal is a key link to ensure product quality and processing efficiency. The existing cardboard stacking device mainly includes a conveyor belt and a fan is arranged above the conveyor belt. The conveyor belt transports the cardboard to a designated position. The fan can blow away the waste chips of the cardboard during the cardboard transportation process, and can also blow away the cut waste, thereby realizing the waste removal of the cardboard.

[0003] However, although the existing cardboard waste removal device can be used to remove cardboard waste, it has the following disadvantages: first, the waste blown away by the fan is often directly accumulated inside the device. If these wastes are not cleaned up in time, they will seriously affect the operating efficiency of the device and may even cause damage or shutdown of the device.

[0004] Secondly, as waste accumulates inside the device, it may be blown up by the fan again and come into contact with the cardboard being processed, causing contamination or damage to the surface of the cardboard, which will not only reduce the quality of the cardboard, but may also increase the defective rate of the product, causing additional losses to production. Utility Model Content

[0005] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model provides a device for removing cardboard waste, which can fully separate the chips on the cardboard from the cardboard during production and has a good chip removal effect.

[0006] A device for removing cardboard waste according to an embodiment of the utility model comprises:

[0007] The transmission assembly comprises a frame, wherein the frame has a waste collection trough inside, a waste discharge port connected to the waste collection trough is arranged on the side wall of the lower part of the frame, and a conveying mechanism for conveying cardboard is arranged at the notch of the waste collection trough;

[0008] A cleaning component, arranged above the transmission component, for blowing air to the transmission belt;

[0009] The collecting assembly includes an active roller and a driven roller rotatably installed inside a frame, a conveyor belt is transmission-connected between the active roller and the driven roller, the end of the conveyor belt corresponds to a waste discharge port, and a collecting box for collecting waste is also provided below the end of the conveyor belt.

[0010] According to some embodiments of the present utility model, the conveying mechanism includes conveying rollers rotatably installed on the side walls of the frame. There are two conveying rollers symmetrically arranged front and back, and a transmission belt is drivingly connected between the two frames.

[0011] According to some embodiments of the present utility model, there are multiple transmission belts. The multiple transmission belts are arranged in parallel and there is a gap between adjacent transmission belts. Grooves adapted to the transmission belts are provided on the conveying rollers.

[0012] According to some embodiments of the present utility model, it further includes a feeding assembly. The feeding assembly includes a feeding frame arranged on one side of the transmission assembly. A driving wheel is rotatably installed on one side of the feeding frame, and a driven wheel is rotatably installed on the other side of the feeding frame. A feeding belt is drivingly connected between the driving wheel and the driven wheel, and the feeding belt and the transmission belt are on the same horizontal plane.

[0013] According to some embodiments of the present utility model, the cleaning assembly includes a first support plate installed on the top of the frame. An installation frame is installed on the first support plate, and an inclined blower is fixedly installed on the installation frame. There are four inclined blowers arranged in a pairwise mirror image, and the inclined blowers are inclinedly arranged on the installation frame.

[0014] According to some embodiments of the present utility model, the cleaning assembly further includes a second support plate installed on the top of the frame. A vertical blower is provided on the second support plate. There are two vertical blowers arranged at intervals, and the two vertical blowers are vertically installed.

[0015] According to some embodiments of the present utility model, it further includes a guiding component inclinedly installed at the waste discharge port. The guiding component includes a guiding plate fixedly connected to the inner wall of the waste discharge port, and the lower end of the guiding plate corresponds to the collection box.

[0016] According to some embodiments of the present utility model, a sliding groove is formed on one side of the upper end of the guiding plate. A sliding plate is slidably installed inside the sliding groove. A brush is provided on one side of the sliding plate and is attached to the outer wall of the conveyor belt. A support spring is fixedly connected to the other side of the sliding plate, and the end of the support spring away from the sliding plate is fixedly connected to the inner wall of the sliding groove.

[0017] According to some embodiments of the present utility model, it further includes a collision component arranged on the bottom wall of the frame. The collision component includes a transmission groove formed on the frame. A collision rack is slidably installed inside the transmission groove. One end of the collision rack is connected to a compression spring, and the other end of the compression spring is fixedly connected to the inner bottom wall of the transmission groove. A rotating shaft is also rotatably installed inside the transmission groove, and a transmission wheel is installed on the rotating shaft. Teeth meshing with the collision rack are provided on the outer wall of the transmission wheel.

[0018] According to some embodiments of the present utility model, synchronous wheels are installed on one end of the rotating shaft extending to the front end face of the frame and on the outer wall of the roller shaft of the driven roller, and a synchronous belt is drivingly connected between the two synchronous wheels.

[0019] A device for removing cardboard waste according to an embodiment of the present utility model has at least the following beneficial effects:

[0020] 1. Through the conveying mechanism provided on the frame of the present utility model, the cardboard to be removed of waste can be conveyed along the length direction of the frame. During the conveying process, the cleaning component is started, and the waste on the cardboard can be blown off and removed through the cleaning component; by optimizing the design and layout of the fan, the waste chips and waste generated during the cardboard processing can be blown away more effectively, ensuring the smoothness and flawlessness of the cardboard surface, thereby improving the overall quality of the product.

[0021] 2. By driving the driving roller to rotate, the conveyor belt rotates under the cooperative drive of the driven roller. The continuously rotating conveyor belt can discharge the waste chips collected inside the waste collection tank from the waste discharge port into the interior of the collection box, capable of collecting and guiding the waste in real time, thereby greatly reducing the accumulation of waste inside the device. This not only reduces the risk of device damage or shutdown, but also improves the operation stability and reliability of the device.

[0022] 3. By rotating the rotating shaft, the driving wheel can be driven to rotate. The driving wheel can drive the collision rack meshing with it to slide along the inner wall through the teeth. Since the teeth are of an incomplete tooth structure, and through the compression spring arranged at the bottom end of the collision rack, as the driving wheel rotates, the meshing and separation of the teeth and the collision rack occur, and then the collision rack can reciprocate. During the reciprocating sliding process of the collision rack, the bottom surface of the collision guide plate can be abutted. Through the collision component colliding with the collision guide plate, it can generate vibration, thereby effectively shaking off the waste attached to it, reducing the accumulation of waste on the guide plate, and improving the cleanliness of the production environment.

[0023] The additional aspects and advantages of the present utility model will be partially given in the following description, partially will become obvious from the following description, or will be understood through the practice of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0025] Figure 1 It is a schematic diagram of the overall structure of the present utility model;

[0026] Figure 2 is a schematic diagram of the overall sectional structure of the present utility model;

[0027] Figure 3 is a schematic diagram of the partial sectional structure of the present utility model;

[0028] Figure 4 is a schematic diagram of the structure of the material guiding component in the present utility model;

[0029] Figure 5 is a schematic diagram of the structure of the collision component in the present utility model.

[0030] Reference numerals:

[0031] 1. Transmission component; 11. Frame; 12. Conveyor roller; 13. Transmission belt;

[0032] 2. Cleaning component; 21. First support plate; 22. Mounting frame; 23. Oblique fan; 24. Second support plate; 25. Vertical fan;

[0033] 3. Collection component; 31. Driving roller; 32. Driven roller; 33. Conveyor belt; 34. Collection box;

[0034] 4. Loading component; 41. Loading frame; 42. Driving wheel; 43. Driven wheel; 44. Loading belt;

[0035] 5. Material guiding component; 51. Material guiding plate; 52. Sliding groove; 53. Sliding plate; 54. Support spring; 55. Brush bristles;

[0036] 6. Collision component; 61. Rotating shaft; 62. Collision rack; 63. Driving wheel; 64. Teeth; 65. Compression spring; 66. Transmission groove. Detailed implementation manners

[0037] The following details the embodiments of the present utility model. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions from beginning to end. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present utility model and should not be construed as a limitation of the present utility model.

[0038] In the description of the present utility model, it should be understood that for the orientation description, such as the orientation or positional relationship indicated by up, down, front, back, left, right, etc., is 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 should not be construed as a limitation of the present utility model.

[0039] In the description of the present utility model, the meaning of "several" is one or more, the meaning of "multiple" is more than two, and understandings such as "greater than", "less than", "exceeding", etc. do not include the corresponding number, while understandings such as "above", "below", "within", etc. include the corresponding number. If there is a description of "first" and "second", this is only for the purpose of distinguishing technical features and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features or implicitly specifying the sequence relationship of the indicated technical features.

[0040] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0041] The following describes a device for removing cardboard waste according to an embodiment of the present utility model with reference to the accompanying drawings.

[0042] Refer to Figures 1 - 5 This utility model aims to provide an embodiment of a device for removing cardboard waste.

[0043] A device for removing cardboard waste mainly includes:

[0044] A transmission assembly 1, including a frame 11. The inside of the frame 11 has a waste collection groove. A waste discharge port communicating with the waste collection groove is provided on the side wall of the lower part of the frame 11. A conveying mechanism for conveying cardboard is provided at the notch of the waste collection groove.

[0045] A cleaning assembly 2, arranged above the transmission assembly 1, for blowing air on the conveyor belt 13.

[0046] A collection assembly 3, including a driving roller 31 and a driven roller 32 rotatably installed inside the frame 11. A conveyor belt 33 is drivingly connected between the driving roller 31 and the driven roller 32. The end of the conveyor belt 33 corresponds to the waste discharge port, and a collection box 34 for collecting waste is further arranged below the end of the conveyor belt 33.

[0047] In this embodiment, the cardboard to be removed of waste can be conveyed along the length direction of the frame 11 through the conveying mechanism arranged on the frame 11. During the conveying process, the cleaning assembly 2 is started, and the waste on the cardboard can be blown off and removed through the cleaning assembly 2; by optimizing the design and layout of the fan, the waste chips and waste generated during the cardboard processing can be blown away more effectively, ensuring the smoothness and flawlessness of the cardboard surface, thereby improving the overall quality of the product.

[0048] The removed waste materials will be collected inside the waste collection trough. By driving the rotation of the driving roller 31, the conveyor belt 33 is rotated under the cooperative transmission of the driven roller 32. The continuous rotation of the conveyor belt 33 can discharge the waste chips collected inside the waste collection trough from the waste discharge port into the interior of the collection box 34, enabling real-time collection and guiding of the waste materials, thereby significantly reducing the accumulation of waste materials inside the device. This not only reduces the risk of device damage or shutdown but also improves the operating stability and reliability of the device.

[0049] Referring to Figures 1 - 2 , in a further embodiment of the present utility model, the conveying mechanism includes conveying rollers 12 rotatably installed on the side walls of the frame 11. There are two conveying rollers 12 arranged symmetrically in the front and rear, and a transmission belt 13 is drivingly connected between the two frames 11.

[0050] In this embodiment, the rotation of the conveying roller 12 is driven by the power provided by a motor or other power equipment. The conveying roller 12 causes the transmission belt 13 to rotate in a cycle through the frictional force with the transmission belt 13. When the cardboard is placed on the transmission belt 13, the conveyance of the cardboard along the length direction of the frame 11 can be achieved.

[0051] Specifically, in order to improve the stability of the cardboard conveyed on the transmission belt 13, a transmission belt 13 with a relatively large surface frictional force can be used.

[0052] Referring to Figures 1 - 2 , in a further embodiment of the present utility model, multiple transmission belts 13 are provided. The multiple transmission belts 13 are arranged in parallel and there is a gap between adjacent transmission belts 13. The conveying roller 12 is provided with grooves adapted to the transmission belts 13.

[0053] In this embodiment, through the grooves provided on the conveying roller 12, the stability of the rotation of the transmission belt 13 on the conveying roller 12 can be improved. The multiple transmission belts 13 provide sufficient support for the cardboard, ensuring the stable conveyance of the cardboard on the transmission belt 13, and the waste materials blown off during the process of removing waste materials can fall into the interior of the waste collection trough from the gap between two adjacent transmission belts 13.

[0054] Referring to Figures 1 - 2 , in a further embodiment of the present utility model, it further includes a feeding assembly 4. The feeding assembly 4 includes a feeding frame 41 provided on one side of the transmission assembly 1. A driving wheel 42 is rotatably installed on one side of the feeding frame 41, and a driven wheel 43 is rotatably installed on the other side of the feeding frame 41. A feeding belt 44 is drivingly connected between the driving wheel 42 and the driven wheel 43. The feeding belt 44 and the transmission belt 13 are on the same horizontal plane.

[0055] In this embodiment, the driving wheel 42 is rotated by the power provided by a motor or other power equipment. The driving wheel 42 causes the driven wheel 43 to rotate through the frictional force with the feeding belt 44, and then the feeding belt 44 rotates cyclically. When the cardboard is placed on the feeding rack 41, the feeding belt 44 can drive the cardboard to be conveyed along the length direction of the feeding rack 41, thereby achieving the effect of conveying the cardboard above the transmission assembly 1.

[0056] Referring to Figures 1 - 2 , in a further embodiment of the present utility model, the cleaning assembly 2 includes a first support plate 21 installed on the top of the frame 11. An installation frame 22 is installed on the first support plate 21, and an inclined blower 23 is fixedly installed on the installation frame 22. There are four inclined blowers 23 arranged in a pairwise mirror image, and the inclined blowers 23 are inclined on the installation frame 22.

[0057] In this embodiment, the cardboard conveyed above the conveyor belt 13 can be blown by the provided inclined blower 23. The blowing can blow off the waste and scraps on the cardboard. The provided first support plate 21 provides a bearing for the installation of the inclined blower 23. The provided installation frame 22 can facilitate the installation of the inclined blower 23 on the first support plate 21. At the same time, the inclined blower 23 can adjust the angle on the installation frame 22, thereby achieving the effect of adjusting the blowing angle.

[0058] Referring to Figures 1 - 2 , in a further embodiment of the present utility model, the cleaning assembly 2 further includes a second support plate 24 installed on the top of the frame 11. A vertical blower 25 is provided on the second support plate 24. There are two vertical blowers 25 arranged at intervals, and the two vertical blowers 25 are vertically installed.

[0059] In this embodiment, the provided second support plate 24 provides a bearing for the installation of the vertical blower 25. The vertical blower 25 can blow vertically on the cardboard conveyed on the conveyor belt 13 to achieve the effect of double blowing and chip removal.

[0060] Referring to Figures 1 - 3 , in a further embodiment of the present utility model, it further includes a material guiding assembly 5 inclinedly installed at the waste discharge port. The material guiding assembly 5 includes a material guiding plate 51 fixedly connected to the inner wall of the waste discharge port. The lower end of the material guiding plate 51 corresponds to the collection box 34.

[0061] In this embodiment, the material guiding assembly 5 can conduct the waste conveyed by the conveyor belt 33 into the interior of the collection box 34 to prevent the waste from spilling into the gap between the collection box 34 and the conveyor belt 33.

[0062] Referring to Figures 3 - 4, in a further embodiment of the present utility model, a sliding groove 52 is provided on one side of the high end of the material guiding plate 51. A sliding plate 53 is slidably installed inside the sliding groove 52. A brush hair 55 that fits against the outer wall of the conveyor belt 33 is provided on one side of the sliding plate 53. A support spring 54 is fixedly connected to the other side of the sliding plate 53. The end of the support spring 54 away from the sliding plate 53 is fixedly connected to the inner wall of the sliding groove 52.

[0063] In this embodiment, the elastic force of the support spring 54 can push the sliding plate 53 to slide inside the sliding groove 52. The sliding groove 52 drives the brush hair 55 to abut against the outer wall of the conveyor belt 33. The surface of the conveyor belt 33 can be cleaned by the brush hair 55 during the rotation of the conveyor belt 33, avoiding small waste chips remaining on the surface of the conveyor belt 33.

[0064] Refer to Figure 2 , Figure 3 and Figure 5 , in a further embodiment of the present utility model, it further includes a collision assembly 6 provided on the bottom wall of the frame 11. The collision assembly 6 includes a transmission groove 66 opened on the frame 11. A collision rack 62 is slidably installed inside the transmission groove 66. One end of the collision rack 62 is connected to a compression spring 65. The other end of the compression spring 65 is fixedly connected to the inner bottom wall of the transmission groove 66. A rotating shaft 61 is also rotatably installed inside the transmission groove 66. A transmission wheel 63 is installed on the rotating shaft 61. Teeth 64 that mesh with the collision rack 62 are provided on the outer wall of the transmission wheel 63.

[0065] In this embodiment, by rotating the rotating shaft 61, the transmission wheel 63 can be driven to rotate. The transmission wheel 63 can drive the collision rack 62 meshing with it to slide along the inner wall of the transmission groove 66 through the teeth 64. Since the teeth 64 are of an incomplete tooth structure, and through the compression spring 65 provided at the bottom end of the collision rack 62, as the transmission wheel 63 rotates, the meshing and separation of the teeth 64 and the collision rack 62 can be achieved, and thus the collision rack 62 can reciprocate. During the reciprocating sliding of the collision rack 62, the bottom surface of the material guiding plate 51 can be abutted. By colliding the material guiding plate 51 with the collision assembly 6, vibration can be generated, effectively shaking off the waste attached to it, reducing the accumulation of waste on the material guiding plate 51, and improving the cleanliness of the production environment.

[0066] Refer to Figure 1 , in a further embodiment of the present utility model, synchronous wheels are installed on the outer walls of the roller shafts of the rotating shaft 61 extending to the front end face of the frame 11 and the driven roller 32, and a synchronous belt is drivingly connected between the two synchronous wheels.

[0067] In this embodiment, the rotation of the driven roller 32 and the transmission of the synchronous wheel and synchronous belt can drive the rotating shaft 61 to rotate, and thus the rotating shaft 61 can rotate synchronously with the driven roller 32.

[0068] In the description of this specification, the description with reference to terms such as "one embodiment, some embodiments, illustrative embodiments, examples, specific examples or some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0069] The embodiments of the present utility model have been described in detail above in conjunction with the accompanying drawings. However, the present utility model is not limited to the above embodiments, and various changes can be made without departing from the gist of the present utility model within the scope of knowledge possessed by those of ordinary skill in the relevant art.

Claims

1. A device for removing cardboard waste, characterized in that: include: A transmission assembly (1) comprises a frame (11), wherein the frame (11) has a waste collection trough inside, a waste discharge port connected to the waste collection trough is arranged on a side wall at a lower portion of the frame (11), and a conveying mechanism for conveying cardboard is arranged at the notch of the waste collection trough; A cleaning component (2) is arranged above the transmission component (1) and is used to blow air to the transmission belt (13); The collecting assembly (3) comprises an active roller (31) and a driven roller (32) rotatably mounted inside the frame (11); a conveyor belt (33) is drivingly connected between the active roller (31) and the driven roller (32); the end of the conveyor belt (33) corresponds to a waste discharge port; and a collecting box (34) for collecting waste is also provided below the end of the conveyor belt (33).

2. The device for removing cardboard waste according to claim 1, characterized in that: The conveying mechanism comprises a conveying roller (12) rotatably mounted on a side wall of a frame (11), two conveying rollers (12) are symmetrically arranged front and back, and a transmission belt (13) is transmission-connected between the two frames (11).

3. The device for removing cardboard waste according to claim 2, characterized in that: A plurality of the conveyor belts (13) are provided, the plurality of conveyor belts (13) are arranged in parallel and a gap is left between adjacent conveyor belts (13), and a groove matching the conveyor belt (13) is provided on the conveying roller (12).

4. The device for removing cardboard waste according to claim 2, characterized in that: The invention also comprises a loading assembly (4), wherein the loading assembly (4) comprises a loading frame (41) arranged on one side of the transmission assembly (1), a driving wheel (42) being rotatably mounted on one side of the loading frame (41), and a driven wheel (43) being rotatably mounted on the other side of the loading frame (41), a loading belt (44) being transmission-connected between the driving wheel (42) and the driven wheel (43), and the loading belt (44) and the transmission belt (13) being located on the same horizontal plane.

5. The device for removing cardboard waste according to claim 1, characterized in that: The cleaning assembly (2) comprises a first support plate (21) mounted on the top of the frame (11); a mounting frame (22) is mounted on the first support plate (21); an oblique fan (23) is fixedly mounted on the mounting frame (22); four oblique fans (23) are arranged in a mirror-like manner in pairs; and the oblique fans (23) are arranged on the mounting frame (22) in an inclined manner.

6. The device for removing cardboard waste according to claim 5, characterized in that: The cleaning assembly (2) further comprises a second support plate (24) mounted on the top of the frame (11), a vertical fan (25) being arranged on the second support plate (24), two of the vertical fans (25) being arranged at intervals, and the two vertical fans (25) being mounted vertically.

7. The device for removing cardboard waste according to claim 1, characterized in that: It also comprises a material guide assembly (5) obliquely mounted on the waste discharge outlet, the material guide assembly (5) comprising a material guide plate (51) fixedly connected to the inner wall of the waste discharge outlet, the lower end of the material guide plate (51) corresponding to the collection box (34).

8. The device for removing cardboard waste according to claim 7, characterized in that: A sliding groove (52) is provided on one side of the high end of the guide plate (51), a sliding plate (53) is slidably mounted inside the sliding groove (52), bristles (55) that fit the outer wall of the conveyor belt (33) are provided on one side of the sliding plate (53), a support spring (54) is fixedly connected to the other side of the sliding plate (53), and one end of the support spring (54) away from the sliding plate (53) is fixedly connected to the inner wall of the sliding groove (52).

9. The device for removing cardboard waste according to claim 1, characterized in that: The invention also comprises a collision assembly (6) arranged on the bottom wall of the frame (11), the collision assembly (6) comprising a transmission groove (66) opened on the frame (11), a collision rack (62) being slidably mounted inside the transmission groove (66), one end of the collision rack (62) being connected to a compression spring (65), the other end of the compression spring (65) being fixedly connected to the bottom wall of the transmission groove (66), a rotating shaft (61) being rotatably mounted inside the transmission groove (66), a transmission wheel (63) being mounted on the rotating shaft (61), and teeth (64) meshing with the collision rack (62) being arranged on the outer wall of the transmission wheel (63).

10. The device for removing cardboard waste according to claim 9, characterized in that: One end of the rotating shaft (61) extending to the front end surface of the frame (11) and the outer wall of the roller shaft of the driven roller (32) are both equipped with synchronous wheels, and a synchronous belt is connected between the two synchronous wheels.

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