Corrugated board indentation device

Abstract

The utility model belongs to the field of packaging forming devices, and discloses a corrugated board creasing device which comprises a rack, a synchronous belt transmission assembly, a creasing assembly and a pre-pressing assembly, the rack is provided with a power source and a transmission shaft, and the transmission shaft is installed at the output end of the power source; the synchronous belt assembly comprises a driving wheel, a first driven wheel, a second driven wheel and a synchronous belt, the driving wheel, the first driven wheel and the second driven wheel are all rotationally arranged on the rack, and the synchronous belt is matched with the driving wheel, the first driven wheel and the second driven wheel so that the driving wheel can drive the first driven wheel and the second driven wheel to rotate synchronously. The transmission shaft is coaxially connected with the driving wheel; the pre-pressing assembly is arranged on the first driven wheel and used for conducting pre-creasing on the corrugated board. The creasing assembly is arranged on the second driven wheel and used for creasing the corrugated boards subjected to pre-creasing. The corrugated board creasing device has the effects that the jumping phenomenon in the creasing process can be eliminated, the creasing continuity is guaranteed, and the carton forming yield of corrugated boards is increased.

Description

Technical Field

[0001] The present application relates to the field of packaging forming devices, and more specifically, to a creasing device for corrugated cardboard. Background Art

[0002] Corrugated cardboard is widely used in product packaging because of its moisture-proof, heat-dissipating, and easy-to-carry properties. In actual use, corrugated cardboard needs to be folded into different shapes to form corrugated boxes of different sizes, so creasing the corrugated cardboard is an important step in the application of corrugated cardboard. A creasing machine is required to creasing corrugated cardboard. The creasing rubber wheel and the creasing wheel are used to press out the creasing that allows the target object to be effectively folded.

[0003] The transmission shaft of the conventional corrugated paper creasing device currently used is installed at the creasing rubber wheel, that is, the entire transmission shaft passes through the creasing rubber wheel and is fixedly connected to it as a whole, so as to achieve the purpose of driving the rubber wheel. In this transmission mode, the transmission shaft is a slender shaft, and after installation, it will inevitably sag due to its own weight. It is also difficult to prevent the transmission shaft from deforming during the actual processing. Considering various influencing factors, the motion trajectory of the transmission shaft during the rotation process is a non-circular motion, which causes the creasing rubber wheel to jump up and down during the rotation process. Therefore, the indentation on the corrugated cardboard will be disconnected, so that the discontinuous indentation leads to unqualified boxes and increases the scrap rate of corrugated cardboard.

[0004] Regarding the above-mentioned related technical means, there is a problem in the production process that the transmission shaft and the creasing rubber wheel are rigidly connected and jump up and down during rotation, resulting in discontinuous creasing of the corrugated cardboard and increased defective rate of boxes. Utility Model Content

[0005] The embodiment of the present application provides a corrugated cardboard indentation device, which can eliminate the jumping phenomenon during the indentation process to ensure the continuity of the indentation and increase the qualified rate of corrugated cardboard boxes.

[0006] The present application provides a corrugated cardboard creasing device adopts the following technical solution:

[0007] A creasing device for corrugated paperboard, comprising:

[0008] A frame, wherein the frame is provided with a power source and a transmission shaft, and the transmission shaft is installed at the output end of the power source;

[0009] A synchronous belt transmission assembly is installed on the frame, the synchronous belt assembly includes a driving wheel, a first driven wheel, a second driven wheel and a synchronous belt, the driving wheel, the first driven wheel and the second driven wheel are all rotatably arranged on the frame, the synchronous belt cooperates with the driving wheel, the first driven wheel and the second driven wheel so that the driving wheel drives the first driven wheel and the second driven wheel to rotate synchronously, and the transmission shaft is coaxially connected with the driving wheel;

[0010] A pre-pressing component, provided on the first driven wheel, for pre-pressing the corrugated paperboard;

[0011] The creasing component is arranged on the second driven wheel and is used for creasing the pre-crimped corrugated paperboard.

[0012] Optionally, the creasing assembly includes a creasing rubber wheel and a creasing wheel that are arranged opposite to each other, the creasing rubber wheel is fixed to the second driven wheel, the creasing rubber wheel and the creasing wheel have opposite rotation directions and the same rotation speed, a first material passing gap is formed between the creasing rubber wheel and the creasing wheel, and a fine-tuning assembly for adjusting the first material passing gap is provided on the frame;

[0013] Optionally, the pre-pressing assembly includes a pre-pressing wheel and a pre-pressing rubber wheel arranged opposite to each other, the pre-pressing rubber wheel is fixed to the first driven wheel. The pre-pressing rubber wheel rotates in the opposite direction to the pre-pressing wheel and has the same rotation speed, a second material passing gap is arranged between the pre-pressing rubber wheel and the pre-pressing wheel, and a fine-tuning assembly for adjusting the second material passing gap is arranged on the frame.

[0014] Optionally, an end surface of the creasing wheel in contact with the corrugated cardboard is provided with an arc flange, and the arc flange is integrally formed with the creasing wheel.

[0015] Optionally, the end surface of the pre-pressing wheel in contact with the corrugated cardboard is an arc surface.

[0016] Optionally, the fine-tuning component includes a lifting plate and an eccentric wheel, the lifting plate is arranged on the frame in a lifting and movable manner, one end of the lifting plate is provided with a mounting frame, a horizontally movable block is provided in the mounting frame, the eccentric wheel is rotatably provided on the movable block, the first transmission wheel or the second transmission wheel is rotatably provided at one end of the lifting plate away from the eccentric wheel, and the lifting plate can be moved when the eccentric wheel rotates.

[0017] Optionally, a slider is provided on the side of the lifting hanging plate facing the frame, and a slide rail cooperating with the slider is provided on the end surface of the frame facing the lifting hanging plate, and the slide rail extends in a vertical direction. When the eccentric wheel rotates, the moving block moves in the installation frame, and the lifting hanging plate moves along the slide rail.

[0018] Optionally, the synchronous belt assembly further includes a tensioning wheel, which is rotatably mounted on the frame and slidingly cooperates with the frame, and the tensioning wheel is connected to the driving wheel via the synchronous belt.

[0019] Optionally, the synchronous belt assembly further includes a spring, which is vertically arranged, and one end of the spring is connected to the axle of the tensioning wheel and provides tension to the tensioning wheel, and the other end of the spring is connected to the frame.

[0020] Optionally, the transmission shaft is a structure of an optical axis plus a key bar.

[0021] It can be seen from the above technical solutions that the embodiments of the present application have the following advantages:

[0022] The present application changes the position and transmission mode of the transmission shaft. The transmission shaft and the creasing rubber wheel and the pre-pressing rubber wheel are driven by a synchronous belt. The synchronous belt itself has a certain elasticity. The connection mode between the transmission shaft and the creasing rubber wheel and the pre-pressing rubber wheel is a soft connection. The synchronous belt will not transmit the vibration of the transmission shaft to the creasing rubber wheel and the pre-pressing rubber wheel. Therefore, the indentation of the corrugated cardboard passing through the creasing device is continuous, which greatly increases the qualified products of the corrugated cardboard boxes and reduces the scrap rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the overall structure of a creasing device for corrugated paperboard disclosed in an embodiment of the present application;

[0024] Figure 2 A schematic structural diagram of a corrugated cardboard creasing device disclosed in an embodiment of the present application from another perspective;

[0025] Figure 3 A front view showing a creasing wheel of a creasing device for corrugated paperboard disclosed in an embodiment of the present application;

[0026] Figure 4 A cross-sectional view showing a pre-pressing wheel of a creasing device for corrugated paperboard disclosed in an embodiment of the present application;

[0027] Figure 5 A schematic structural diagram of a corrugated cardboard indentation device disclosed in an embodiment of the present application, showing a fine-tuning component.

[0028] Description of reference numerals:

[0029] 1. Frame; 11. Drive shaft; 12. Slide rail; 2. Synchronous belt drive assembly; 21. Driving wheel; 22. Synchronous belt; 23. First driven wheel; 24. Second driven wheel; 25. Tensioning wheel; 26. Spring; 3. Indentation assembly; 31. Indentation rubber wheel; 32. Indentation wheel; 321. Arc flange; 33. First feed gap; 4. Pre-pressing assembly; 41. Pre-pressing rubber wheel; 42. Pre-pressing wheel; 421. Arc surface; 43. Second feed gap; 5. Fine-tuning assembly; 51. Lifting hanging plate; 511. Mounting frame; 512. Moving block; 513. Sliding block; 52. Shaft rod; 53. Eccentric wheel. DETAILED DESCRIPTION

[0030] The present application is further described in detail below in conjunction with the accompanying drawings.

[0031] An embodiment of the present application provides a creasing device for corrugated cardboard.

[0032] See also Figure 1 and Figure 2 In the embodiment of the present application, a creasing device for corrugated cardboard includes a frame 1, a synchronous belt 22 component, a creasing component 3, a pre-pressing component 4 and a fine-tuning component 5. The pre-pressing component 4 is used to perform pre-pressing treatment on the corrugated cardboard. The corrugated cardboard after the pre-pressing treatment is then indented by the creasing component 3. The fine-tuning component 5 is used to adjust the distance between the creasing component 3 and the pre-pressing component 4 and the corrugated cardboard, and can be adaptively adjusted according to the thickness of the corrugated cardboard to expand the applicability of the creasing device.

[0033] The frame 1 is plate-shaped and vertically arranged. A power source and a transmission shaft 11 are arranged on the frame 1. The transmission shaft 11 is installed at the output end of the power source. When the power source is started, the transmission shaft 11 is driven to rotate. The straight line where the length direction of the transmission shaft 11 is located is perpendicular to the frame 1. In this embodiment, the transmission shaft 11 preferably uses a light axis plus key bar structure. Compared with the prior art in which the transmission shaft 11 uses the shaft rod 52, the transmission shaft 11 with the light axis plus key bar structure is not easy to deform during the processing process and has a high coaxiality accuracy. Moreover, the sagging phenomenon caused by its own weight after installation is slower than that of the shaft rod 52.

[0034] The synchronous belt 22 assembly includes a driving wheel 21, a synchronous belt 22, a first driven wheel 23, a second driven wheel 24 and a tensioning wheel 25. The driving wheel 21, the first driven wheel 23 and the second driven wheel 24 are all rotatably arranged on the frame 1. The synchronous belt 22 cooperates with the driving wheel 21, the first driven wheel 23, the second driven wheel 24 and the tensioning wheel 25 to make the driving wheel 21, the first driven wheel 23, the second driven wheel 24 and the tensioning wheel 25 rotate synchronously. The tensioning wheel 25 plays a tensioning role in the transmission process of the synchronous belt 22. The tensioning wheel 25 is rotatably installed on the frame 1 and slides with the frame 1. The transmission shaft 11 is coaxially connected with the driving wheel 21. The rotation of the transmission wheel drives the driving wheel 21 to rotate. The rotation of the driving wheel 21 drives the first driven wheel 23 and the second driven wheel 24 to rotate synchronously through the synchronous belt 22.

[0035] The creasing assembly 3 is arranged on the second driven wheel 24, and the creasing assembly 3 includes a creasing rubber wheel 31 and a creasing wheel 32. The creasing rubber wheel 31 and the creasing wheel 32 are arranged opposite to each other, and the creasing rubber wheel 31 is located directly above the creasing wheel 32. The creasing rubber wheel 31 is fixed to the second driven wheel 24 and rotates with the frame 1. The creasing rubber wheel 31 and the driving wheel 21 are connected through the synchronous belt 22 and rotate synchronously. The creasing rubber wheel 31 and the creasing wheel 32 have opposite rotation directions and the same rotation speed, and a first feeding gap 33 is arranged between the creasing rubber wheel 31 and the creasing wheel 32. The corrugated cardboard is located in the first feeding gap 33, and the creasing rubber wheel 31 and the creasing wheel 32 press the corrugated cardboard in the first feeding gap 33 to perform creasing treatment. In this embodiment, the creasing wheel 32 is rotatably mounted on a mounting frame arranged opposite to the frame 1, and the creasing wheel 32 is driven to rotate by a driving member. In other embodiments, the creasing wheel 32 is rotatably arranged on the frame 1.

[0036] The output end of the power source drives the transmission shaft 11 to rotate, and the transmission shaft 11 drives the driving wheel 21 to rotate synchronously, and drives the second driven wheel 24 to rotate through the synchronous belt 22 to rotate the creasing rubber wheel 31. With the cooperation of the creasing wheel 32, the corrugated cardboard enters the material gap from one side of the creasing rubber wheel 31, and the creasing wheel 32 and the creasing rubber wheel 31 rotate synchronously and oppositely to perform the creasing operation on the corrugated cardboard. The corrugated cardboard that has been creasing is discharged from one side of the creasing rubber wheel 31, thereby completing the creasing process. The present application changes the position and transmission method of the transmission shaft 11. The transmission shaft 11 and the creasing rubber wheel 31 are transmitted through the synchronous belt 22. The synchronous belt 22 itself has a certain elasticity. The connection method between the transmission shaft 11 and the creasing rubber wheel 31 is a soft connection. The synchronous belt 22 does not transmit the vibration of the transmission shaft 11 to the creasing rubber wheel 31. Therefore, the creasing of the corrugated cardboard passing through the creasing device is continuous, which greatly increases the qualified products of the corrugated cardboard boxes and reduces the scrap rate.

[0037] Furthermore, in order to improve the effect of creasing, the corrugated cardboard is pre-pressed before creasing to press the corrugated layer in the middle of the corrugated cardboard to a certain thickness. The pre-pressing component 4 is arranged on the first driven wheel 23, and the pre-pressing component 4 includes a pre-pressing rubber wheel 41 and a pre-pressing wheel 42. The pre-pressing rubber wheel 41 is arranged opposite to the pre-pressing wheel 42, and the pre-pressing rubber wheel 41 is located directly above the pre-pressing wheel 42. The pre-pressing rubber wheel 41 is fixed to the first driven wheel 23 and rotates with the frame 1. The pre-pressing rubber wheel 41 is connected to the driving wheel 21 through the synchronous belt 22 so that the pre-pressing rubber wheel 41 rotates synchronously with the creasing rubber wheel 31. The pre-pressing rubber wheel 41 and the pre-pressing wheel 42 rotate in opposite directions and at the same speed. A second material passing gap 43 is arranged between the pre-pressing rubber wheel 41 and the pre-pressing wheel 42. In this embodiment, the pre-pressing wheel 42 is rotatably mounted on a mounting frame arranged opposite to the frame 1, and the pre-pressing wheel 42 is mounted at the output end of the driving member and driven to rotate by the driving member; the creasing rubber wheel 31 and the pre-pressing rubber wheel 41 have the same installation height, the creasing wheel 32 and the pre-pressing wheel 42 have the same installation height, and the first feeding gap 33 and the second feeding gap 43 have the same size. With the cooperation of the pre-pressing rubber wheel 41 and the pre-pressing wheel 42, the corrugated cardboard first presses the corrugated layer of the middle layer of the cardboard to a certain thickness, so as to facilitate the subsequent creasing operation and better forming. Under the action of the synchronous belt 22 assembly, the pre-pressing rubber wheel 41 and the creasing rubber wheel 31 keep rotating synchronously, and the corrugated cardboard is first pressed through the second feeding gap 43, and then the creasing operation is performed through the first feeding gap 33, which improves the quality of the creasing of the corrugated cardboard on the one hand, and accelerates the creasing speed on the other hand.

[0038] See also Figure 3 and Figure 4 The end surface of the creasing wheel 32 in contact with the corrugated cardboard is provided with an arc flange 321, which is integrally formed with the creasing wheel 32 and is located at the midpoint of the peripheral wall of the creasing wheel 32; the end surface of the pre-pressing wheel 42 in contact with the corrugated cardboard is an arc surface 421. In the process of pressing the corrugated cardboard, the setting of the arc surface 421 of the pre-pressing wheel 42 reduces the stress between the corrugated cardboard at the pressed part and the adjacent corrugated cardboard, and prevents the edge of the pre-pressing wheel 42 from damaging the corrugated cardboard when pressing the corrugated layer. When the pressed corrugated cardboard is creasing, the arc flange 321 contacts the corrugated cardboard and the stress generated by the pressing is higher than the stress generated by the peripheral wall of the creasing wheel 32 on the corrugated cardboard, and the arc flange 321 has a better effect of creasing the corrugated cardboard.

[0039] See also Figure 2 and Figure 5In order to adapt to corrugated paperboards of different thicknesses, the frame 1 is provided with two sets of fine-tuning components 5, which are arranged side by side. The two sets of fine-tuning components 5 correspond to the indentation components 3 and the pre-pressing components 4 one by one, respectively. The fine-tuning components 5 are used to adjust the size of the first feeding gap 33 and the second feeding gap 43 to adapt to corrugated paperboards of different thicknesses. The structures and principles of the two sets of fine-tuning components 5 are the same, and the fine-tuning components 5 corresponding to the indentation rubber wheel 31 are used as an example for explanation.

[0040] The fine-tuning assembly 5 includes a lifting plate 51, a shaft 52, an eccentric wheel 53, and a driving member for driving the shaft 52 to rotate. The lifting plate is arranged on the frame 1 in a manner that it can be lifted and moved. A mounting frame 511 is arranged at one end of the lifting plate 51. The eccentric wheel 53 is located in the mounting frame 511. A moving block 512 that can be moved horizontally is arranged in the mounting frame 511. The eccentric wheel 53 is rotatably arranged on the moving block 512. One end of the lifting plate 51 away from the eccentric wheel 53 is rotatably connected to the second driven wheel 24. The shaft 52 penetrates the frame 1 and the eccentric wheel 53 at the same time, and the shaft 52 is meshed with the eccentric wheel 53. When the eccentric wheel 53 rotates, the lifting plate 51 can be moved. Specifically, the shaft 52 can be a toothed shaft or an optical shaft plus a key bar structure. In this embodiment, the optical shaft plus a key bar structure is preferably used. The eccentric wheel 53 has a mounting hole, and an inner groove is arranged in the mounting hole. The shaft 52 passes through the mounting hole so that the chain cooperates with the inner groove so that the eccentric wheel 53 and the shaft 52 are engaged and rotate synchronously. The driving member drives the shaft 52 to rotate, thereby driving the eccentric wheel 53 to rotate synchronously. When the shaft 52 rotates and drives the eccentric wheel 53 to rotate, it will drive the moving block 512 to move horizontally in the mounting frame 511, thereby moving the lifting hanging plate 51 relative to the frame 1. A slider 513 is provided on the side of the lifting hanging plate 51 facing the frame 1, and a slide rail 12 cooperating with the slider 513 is provided on the end surface of the frame 1 facing the lifting hanging plate 51. The slider 513 is installed on the slide rail 12 and slides with the slide rail 12. The slide rail 12 extends in the vertical direction. When the eccentric wheel 53 rotates, the moving block 512 moves in the installation frame 511, and the lifting hanging plate 51 moves along the slide rail 12. Due to the action of the slide rail 12, the horizontally moving moving block 512 provides the lifting hanging plate 51 with a driving force for up and down movement, so that the first lifting hanging plate 51 can realize the lifting and lowering movement, thereby driving the creasing rubber wheel 31 to lift and lower, so as to adjust the distance between the creasing rubber wheel 31 and the creasing wheel 32 according to production requirements, that is, the size of the first material transfer channel.

[0041] Before production, according to the different thickness specifications of the corrugated cardboard, the sizes of the first feeding gap 33 and the second feeding gap 43 are adjusted by operating the fine-tuning component 5, so that the pre-pressing rubber wheel 41 and the creasing rubber wheel 31 are adjusted to appropriate heights, so that the creasing rubber wheel 31 and the creasing wheel 32 as well as the pre-pressing rubber wheel 41 and the pre-pressing wheel 42 can just clamp the corrugated cardboard.

[0042] See also Figure 1In order to adapt to the adjustment of the fine-tuning assembly 5 and prevent the synchronous belt 22 from loosening, the tension wheel 25 is slidably matched with the frame 1 through the spring 26. The spring 26 is vertically arranged, one end of the spring 26 is connected to the axle of the tension wheel 25 and provides tension to the tension wheel 25, and the other end of the spring 26 is connected to the frame 1. In this embodiment, the frame 1 is provided with a connecting rod, the axle of the tension wheel 25 protrudes from the side end face of the tension wheel 25, and the connecting rod and the tension wheel 25 are located on the same side of the frame 1, and the spring 26 is installed on the frame 1 through the connecting rod. In the process of adjusting the lifting hanging plate 51, the indentation rubber wheel 31 and / or the pre-pressing rubber wheel 41 are synchronously lifted and lowered, and the synchronous belt 22 changes synchronously. Since the tension wheel 25 is tightened by the spring 26, it will also move up and down with the lifting hanging plate 51 to tighten the synchronous belt 22, preventing the synchronous belt 22 from loosening and causing insufficient power.

[0043] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereby. The same parts are represented by the same figure marks. It should be noted that the words "front", "rear", "left", "right", "up" and "down" used in the above description refer to the directions in the drawings, and the words "inside" and "outside" refer to the directions toward or away from the geometric center of a specific component, respectively. Therefore: all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A creasing device for corrugated cardboard, characterized in that: include: A frame (1), the frame (1) being provided with a power source and a transmission shaft (11), the transmission shaft (11) being installed at an output end of the power source; A synchronous belt transmission assembly (2), the synchronous belt transmission assembly (2) comprising a driving wheel (21), a first driven wheel (23), a second driven wheel (24) and a synchronous belt (22), the driving wheel (21), the first driven wheel (23) and the second driven wheel (24) are all rotatably arranged on the frame (1), the synchronous belt (22) cooperates with the driving wheel (21), the first driven wheel (23) and the second driven wheel (24) so ​​that the driving wheel (21) drives the first driven wheel (23) and the second driven wheel (24) to rotate synchronously, and the transmission shaft (11) is coaxially connected with the driving wheel (21); A pre-pressing assembly (4), arranged on the first driven wheel (23), for pre-pressing the corrugated paperboard; The creasing assembly (3) is arranged on the second driven wheel (24) and is used for creasing the pre-crimped corrugated paperboard.

2. A corrugated cardboard creasing device according to claim 1, characterized in that: The creasing assembly (3) comprises a creasing rubber wheel (31) and a creasing wheel (32) which are arranged opposite to each other. The creasing rubber wheel (31) is fixed to the second driven wheel (24). The creasing rubber wheel (31) and the creasing wheel (32) rotate in opposite directions and have the same rotation speed. A first material transfer gap (33) is formed between the creasing rubber wheel (31) and the creasing wheel (32). The frame (1) is provided with a fine-tuning assembly (5) for adjusting the first material transfer gap (33).

3. The creasing device for corrugated board according to claim 1, characterized in that: The pre-pressing assembly (4) comprises a pre-pressing wheel (42) and a pre-pressing rubber wheel (41) which are arranged opposite to each other, the pre-pressing rubber wheel (41) is fixed to the first driven wheel (23), the pre-pressing rubber wheel (41) and the pre-pressing wheel (42) rotate in opposite directions and have the same rotation speed, a second material passing gap (43) is arranged between the pre-pressing rubber wheel (41) and the pre-pressing wheel (42), and a fine adjustment assembly (5) for adjusting the second material passing gap (43) is arranged on the frame (1).

4. A creasing device for corrugated board according to claim 2, characterized in that: The end surface of the creasing wheel (32) in contact with the corrugated paperboard is provided with an arc flange (321), and the arc flange (321) and the creasing wheel (32) are integrally formed.

5. The creasing device for corrugated board according to claim 3, characterized in that: The end surface of the pre-pressing wheel (42) in contact with the corrugated paperboard is an arc surface (421).

6. A creasing device for corrugated board according to claim 2 or 3, characterized in that: The fine-tuning assembly (5) comprises a lifting plate (51) and an eccentric wheel (53); the lifting plate (51) is arranged on the frame (1) in a manner that allows it to be lifted and moved; a mounting frame (511) is arranged at one end of the lifting plate (51); a horizontally movable block (512) is arranged in the mounting frame (511); the eccentric wheel (53) is rotatably arranged on the movable block (512); the first driven wheel (23) or the second driven wheel (24) is rotatably arranged at one end of the lifting plate (51) away from the eccentric wheel (53); and the lifting plate (51) can be moved when the eccentric wheel (53) rotates.

7. A creasing device for corrugated board according to claim 6, characterized in that: A slider (513) is arranged on the side of the hanging plate (51) facing the frame (1), and a slide rail (12) cooperating with the slider (513) is arranged on the end surface of the frame (1) facing the lifting hanging plate (51), and the slide rail (12) extends in a vertical direction. When the eccentric wheel (53) rotates, the moving block (512) moves in the installation frame (511), and the lifting hanging plate (51) moves along the slide rail (12).

8. The creasing device for corrugated board according to claim 5, characterized in that: The synchronous belt transmission assembly (2) also includes a tensioning wheel (25), which is rotatably mounted on the frame (1) and slidingly cooperates with the frame (1), and the tensioning wheel (25) is connected to the driving wheel (21) through the synchronous belt (22).

9. A creasing device for corrugated board according to claim 8, characterized in that: The synchronous belt transmission assembly (2) further comprises a spring (26), wherein the spring (26) is arranged vertically, and one end of the spring (26) is connected to the axle of the tensioning wheel (25) and provides a pulling force to the tensioning wheel (25), and the other end of the spring (26) is connected to the frame (1).

10. The creasing device for corrugated board according to claim 1, characterized in that: The transmission shaft (11) is a structure of an optical shaft plus a key bar.

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