A cutting apparatus for bellows

Abstract

The application relates to a cutting device for a corrugated pipe, which comprises a rack, a ring cutting assembly and a positioning assembly, the positioning assembly comprises a positioning frame, a positioning cylinder and a positioning block, the positioning frame is arranged on the rack, the positioning cylinder is arranged on the positioning frame, the positioning block is arranged on a piston rod of the positioning cylinder, the positioning cylinder is used for driving the positioning block to approach or move away from an outer side wall of the corrugated pipe, an avoiding groove is arranged on a lower end surface of the positioning block, the positioning block is in a "H" shape, and the positioning block is used for being clamped in a ring corrugated position of the corrugated pipe through the avoiding groove. The application has the effect of improving the consistency of the cutting position of the corrugated pipe.

Description

Technical Field

[0001] This application relates to the field of bellows production, and particularly to a cutting device for bellows. Background Art

[0002] Double-wall bellows is a kind of pipe with an annular outer wall and a smooth inner wall, and has characteristics such as light weight and strong compressive resistance.

[0003] After the pipe blank forms the shape of double-wall bellows through the forming device, a cutting device is used to perform a cutting operation on the double-wall bellows to form double-wall bellows with the same length specification.

[0004] During the operation of the existing cutting device, the cutting position of the double-wall bellows is placed at the cutting tool device. However, the size of the double-wall bellows is relatively large, and it is difficult for manual direct alignment, and errors are likely to occur. Even the annular corrugation position may be cut, resulting in a sharp drop in the bellows and the failure of the compressive resistance. Utility Model Content

[0005] In order to improve the consistency of the cutting position of the bellows by the cutting device, this application provides a cutting device for bellows.

[0006] A cutting device for bellows provided by this application adopts the following technical solution: A cutting device for bellows includes a frame, a circumferential cutting component, and a positioning component. The positioning component includes a positioning frame, a positioning cylinder, and a positioning block. The positioning frame is arranged on the frame, the positioning cylinder is arranged on the positioning frame, the positioning block is arranged on the piston rod of the positioning cylinder, the positioning cylinder is used to drive the positioning block to approach or move away from the outer wall of the bellows, an avoidance groove is opened on the lower end surface of the positioning block, the positioning block is in a "冂" shape, and the positioning block is used to be clamped at the annular corrugation position of the bellows through the avoidance groove.

[0007] By adopting the above technical solution, for the positioning component of the bellows cutting device, by arranging the positioning frame on the frame, the positioning cylinder drives the "冂"-shaped positioning block to act, and the avoidance groove on the lower end surface of the positioning block is clamped at the annular corrugation position of the bellows, which can achieve precise positioning of the bellows, replace the manual alignment operation, greatly reduce the alignment error, effectively avoid the situation that the cutting tool mistakenly cuts the annular corrugation, thereby ensuring the structural integrity of the bellows, preventing the failure of its compressive resistance, and ensuring that the cut bellows can still maintain the characteristics of light weight and strong compressive resistance, meeting the product quality requirements.

[0008] Optionally, the positioning frame is provided with an adjusting component. The positioning frame is slidably connected to the frame along the length of the corrugated pipe. The adjusting component includes two sliding columns, an adjusting bolt, and an anti-slip pad. The two sliding columns are distributed along the length perpendicular to the corrugated pipe. The sliding columns are set on the frame. The anti-slip pad is set on the positioning frame. The tail of the adjusting bolt passes through the anti-slip pad and the positioning frame in sequence and is threaded to the frame. The head of the adjusting bolt abuts against the anti-slip pad.

[0009] By adopting the above technical solution, an adjustment component is set on the positioning frame, allowing the positioning frame to slide along the length of the corrugated pipe on the machine frame. Two sliding columns are distributed perpendicular to the length of the corrugated pipe to guide the sliding direction. The adjustment bolt passes through the anti-slip pad, the positioning frame, and is threadedly connected to the machine frame. By tightening or loosening the adjustment bolt, the positioning frame is fixed and moved by the abutment between the head of the adjustment bolt and the anti-slip pad. The positioning position of the positioning block on the corrugated pipe can be flexibly adjusted without replacing the positioning components, which improves the adaptability of the equipment to different production scenarios, reduces equipment adjustment time, and improves production efficiency.

[0010] Optionally, the circumferential cutting assembly coaxially sets the circumferential cutting tube and the corrugated pipe and rotatably connects them to the frame. The cylinder body of the cutting cylinder is installed on the circumferential cutting tube, with its length direction parallel to the radial direction of the circumferential cutting tube. The cutter is set on the piston rod of the cutting cylinder. During cutting, the circumferential cutting tube drives the cutting cylinder and the cutter to rotate around the corrugated pipe. At the same time, the cutting cylinder drives the cutter to cut into the corrugated pipe radially, forming a circular cutting trajectory that matches the cross-section of the corrugated pipe. This avoids problems such as skewed cuts and burrs caused by uneven force, ensuring the flatness and accuracy of the cut, and facilitating subsequent processes such as connecting and installing the corrugated pipe.

[0011] By adopting the above technical solution, the circumferential cutting assembly includes a circumferential cutting tube, a cutter, a cutting cylinder, and a driving component. The circumferential cutting tube is coaxially arranged with the corrugated pipe and is rotatably connected to the frame. The length direction of the cutting cylinder is parallel to the radial direction of the circumferential cutting tube. The cylinder body of the cutting cylinder is disposed on the circumferential cutting tube, and the cutter is disposed on the piston rod of the cutting cylinder.

[0012] Optionally, the driving component includes a drive motor, a bevel gear, and a bevel gear ring. The bevel gear ring is coaxially arranged with the circumferential tube and is disposed on the outer side wall of the circumferential tube. The drive motor is disposed on the frame, and the bevel gear is disposed on the output shaft of the drive motor. The bevel gear meshes with the bevel gear ring.

[0013] By adopting the above technical solution, the drive component is constructed by mounting the drive motor on the frame, installing the bevel gear on the output shaft of the drive motor, and having the bevel gear ring coaxial with the circumferential tube and fixed to the outer wall of the circumferential tube. The drive motor's power is transmitted to the circumferential tube through the meshing transmission of the bevel gear and the bevel gear ring, causing the circumferential tube to rotate smoothly. This transmission method can change the direction of power transmission, adapt to the installation layout of the circumferential tube on the frame, and has low power loss and stable transmission ratio during transmission, ensuring the uniformity of the circumferential tube's rotation speed and avoiding inconsistent cutting depths caused by speed fluctuations, further improving cutting accuracy and the stability of the cutting process.

[0014] Optionally, the frame is further provided with a limiting component to restrict the rotation of the bellows. The limiting component includes two clamping members and a driving member. The two clamping members are respectively located on both sides of the circumferential cutting component. The clamping members include a plurality of clamping rods and a clamping ring. The plurality of clamping rods are evenly distributed circumferentially along the axis of the circumferentially cut tube. The clamping rods are perpendicular to the axis of the bellows. The clamping rods are slidably connected to the frame along the length of the clamping rods. The clamping rings are coaxially arranged with the circumferentially cut tube. The clamping rings are rotatably connected to the frame. A limiting groove is formed on the clamping rings. The distance from the limiting groove to the axis of the bellows gradually decreases from one end of the limiting groove to the other end. A limiting post is provided on the clamping rod. The limiting post is located in the limiting groove. The driving member is used to drive the two clamping rings to rotate simultaneously.

[0015] By adopting the above technical solution, the limiting component has clamping members on both sides of the circumferential cutting component. Each clamping member has several clamping rods evenly distributed circumferentially along the axis of the circumferential cutting tube and can slide along its own length. The clamping ring is coaxially rotatably connected to the circumferential cutting tube, and the distance from its limiting groove to the axis of the corrugated tube gradually changes. The limiting post on the clamping rod is located in the limiting groove. When the driving component drives the two clamping rings to rotate simultaneously, the limiting post moves along the limiting groove and pushes the clamping rod closer to the corrugated tube, clamping the corrugated tube from multiple circumferential positions. This effectively limits the rotation or offset of the corrugated tube caused by factors such as the rotation of the circumferential cutting tube and the force of the cutting blade during the cutting process, ensuring that the cutting blade always cuts at the preset cutting position, further improving the cutting accuracy and reducing the generation of defective products.

[0016] Optionally, an arc-shaped plate is provided at one end of the clamping rod facing the bellows, the axis of the arc-shaped plate is parallel to the length direction of the bellows, and the inner arc surface of the arc-shaped plate is used to abut against the outer wall of the bellows.

[0017] By adopting the above technical solution, an arc-shaped plate is set at the end of the clamping rod facing the corrugated pipe. The axis of the arc-shaped plate is parallel to the length direction of the corrugated pipe, and its inner arc surface fits against the outer wall of the corrugated pipe. Compared with the flat contact at the end of the clamping rod, the arc-shaped surface contact increases the clamping area, disperses the clamping force, and prevents excessive local pressure from causing deformation and damage to the outer wall of the corrugated pipe, thus ensuring the appearance and structural integrity of the product. At the same time, the higher fit enhances the clamping friction, avoids the corrugated pipe from sliding or shifting during clamping, further ensures the stability of the corrugated pipe during cutting, and indirectly improves the cutting accuracy.

[0018] Optionally, the driving component includes a drive screw, a sliding block, two mating rods, and a drive motor. The sliding block is slidably connected to the frame along a length direction perpendicular to the bellows. The two mating rods correspond to two clamping rings. One end of each mating rod is rotatably connected to the clamping ring. The length direction of each mating rod is perpendicular to the sliding direction of the sliding block. The mating rod is slidably connected to the sliding block along its length direction. The drive motor is used to drive the sliding block to move.

[0019] By adopting the above technical solution, the driving component drives the sliding block to slide along the direction perpendicular to the length of the corrugated pipe via a drive motor. Two mating rods correspond to two clamping rings respectively. One end of the mating rod is rotatably connected to the clamping ring, and the other end slides along its own length and is connected to the sliding block. The length direction of the mating rod is perpendicular to the sliding direction of the sliding block. When the sliding block moves, the mating rods push or pull the two clamping rings to rotate synchronously, so that the clamping rods on both sides move closer to or further away from the corrugated pipe at the same time. This design eliminates the need to set a separate driving device for each clamping ring, simplifying the equipment structure and reducing the equipment manufacturing cost and maintenance difficulty. At the same time, synchronous driving ensures that the clamping force and clamping speed on both sides are consistent, avoiding the corrugated pipe from shifting due to uneven force caused by asynchronous clamping on both sides, thus ensuring the clamping effect and cutting accuracy.

[0020] Optionally, the drive unit further includes a torque sensor for detecting the torque of the drive motor, the torque sensor being disposed on the drive motor and electrically connected to the drive motor.

[0021] By adopting the above technical solution, the problems of excessive clamping force easily damaging the bellows and insufficient clamping force failing to effectively fix the bellows are addressed. A torque sensor is installed in the drive component, which is mounted on and electrically connected to the drive motor. This allows for real-time detection of the drive motor's torque. When the clamping rod approaches the bellows and applies clamping force, the motor load increases, causing a change in torque. When the torque sensor detects that the motor torque has reached a preset value, it indicates that the clamping force is sufficient to stably fix the bellows without over-clamping. At this point, the drive motor can be stopped by the motor control system, effectively avoiding damage to the bellows or insecure fixation caused by improper clamping force.

[0022] In summary, the present application includes at least one of the following beneficial technical effects: 1. The "冂"-shaped positioning block is clamped with the corrugation to achieve precise positioning, restrict the clamping of the component to prevent deviation, and the circumferential cutting component forms an adapted annular cutting trajectory. The three cooperate to avoid cutting at the wrong position and ensure the core performance of the compressive resistance of the bellows; 2. The adjusting part can flexibly adjust the positioning position. There is no need to replace the component. The driving part uses a single motor to synchronously control the clamping, which simplifies the structure. The two reduce the time-consuming of equipment adjustment and operation, and improve the adaptability and production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a schematic structural diagram of a cutting device for a bellows.

[0024] Figure 2 is Figure 1 a cross-sectional view of the circumferential cutting component in

[0025] Figure 3 is Figure 1 a schematic structural diagram of the positioning component.

[0026] Figure 4 is

[0027] Reference numerals: 1, frame; 2, circumferential cutting component; 21, circumferential cutting pipe; 22, cutter; 23, cutting cylinder; 24, driving part; 241, driving motor; 242, bevel gear; 243, bevel gear ring; 3, positioning component; 31, positioning frame; 32, positioning cylinder; 33, positioning block; 34, avoidance groove; 4, limiting component; 41, clamping part; 411, clamping rod; 412, clamping ring; 413, arc plate; 414, limiting groove; 415, limiting column; 42, driving part; 421, driving screw; 422, sliding block; 423, cooperating rod; 424, driving motor; 425, torque sensor; 5, adjusting part; 51, sliding column; 52, adjusting bolt; 53, anti-slip pad. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] The following will further describe the present application in detail with reference to the attached Figure 1 - attached Figure 4 drawings.

[0029] The embodiment of the present application discloses a cutting device for a bellows. Refer to Figure 1A corrugated pipe cutting device includes a frame 1, a ring cutting assembly 2, a positioning assembly 3, and a limiting assembly 4. The ring cutting assembly, the positioning assembly 3, and the limiting assembly 4 are all mounted on the frame 1. The ring cutting assembly 2 is used to perform a ring cutting operation on the corrugated pipe. The positioning assembly 3 is used to position the corrugated pipe so that the ring cutting assembly 2 can cut between the annular corrugations of the corrugated pipe. The limiting assembly 4 is used to clamp the corrugated pipe and restrict its movement and rotation.

[0030] The circumferential cutting assembly 2 includes a circumferential cutting tube 21, three cutters 22, three cutting cylinders 23, and a drive component 24. The circumferential cutting tube 21 is coaxially arranged with the corrugated pipe and rotatably connected to the frame 1. The three cutting cylinders 23 are evenly distributed circumferentially along the axis of the circumferential cutting tube 21, and the length direction of the cutting cylinders 23 is perpendicular to the axis of the circumferential cutting tube 21. The cylinder body of the cutting cylinder 23 is fixedly mounted on the outer wall of the circumferential cutting tube 21, and the piston rod of the cutting cylinder 23 passes through the circumferential cutting tube 21. The three cutters 22 correspond to the three cutting cylinders 23 and are fixed. The drive component 24, located on the piston rod of the cutting cylinder 23, is used to drive the circumferential cutting tube 21 to rotate. The drive component 24 includes a drive motor 241, a bevel gear 242, and a bevel gear ring 243. The bevel gear ring 243 is coaxially arranged with the circumferential cutting tube 21 and is fixedly arranged on the outer wall of the circumferential cutting tube 21. The drive motor 241 is fixedly arranged on the frame 1. The bevel gear 242 is coaxially arranged with the output shaft of the drive motor 241 and is fixedly arranged on the output shaft of the drive motor 241. The bevel gear 242 and the bevel gear ring 243 are meshed.

[0031] The positioning assembly 3 includes a positioning frame 31, a positioning cylinder 32, and a positioning block 33. The positioning frame 31 is equipped with an adjusting component 5, which includes two sliding columns 51, an adjusting bolt 52, and an anti-slip pad 53. The sliding columns 51 are vertically arranged and fixedly mounted on the upper end face of the frame 1 along a direction perpendicular to the axis of the circumferentially cut tube 21. The positioning frame 31 is slidably connected to the two sliding columns 51 along the axis of the circumferentially cut tube 21. The anti-slip pad 53 is located on the upper end face of the positioning frame 31. The adjusting bolt 52 is vertically arranged, with its tail passing through the anti-slip pad 53 and the positioning frame 31 sequentially and threaded onto the frame 1. The head of the adjusting bolt 52 abuts against the upper end face of the anti-slip pad 53. The positioning cylinder 32 is vertically set and fixedly set on the positioning frame 31. The positioning block 33 is fixedly set on the piston rod of the positioning cylinder 32. The lower end face of the positioning block 33 is provided with a relief groove 34. The cross-section of the positioning block 33 is horizontal and perpendicular to the axis of the annular pipe 21 and is U-shaped. The relief groove 34 of the positioning block 33 is used to engage the annular corrugations of the corrugated pipe.

[0032] The limiting component 4 includes two clamping members 41 and a driving member 42. The two clamping members 41 are located on both sides of the circumferentially cut tube 21. Each clamping member 41 includes three clamping rods 411 and a clamping ring 412. The clamping ring 412 is coaxially arranged with the circumferentially cut tube 21 and is rotatably connected to the frame 1. The three clamping rods 411 are evenly distributed circumferentially along the axis of the clamping ring 412. The length direction of the clamping rods 411 is perpendicular to the axis of the clamping ring 412. The clamping rods 411 are slidably connected to the frame 1 along their length direction. The clamping ring 412 is provided with a limiting groove 414, which is arc-shaped. The distance from the limiting groove 414 to the axis of the circumferential tube 21 gradually decreases from one end of the limiting groove 414 to the other end. A limiting post 415 is fixedly provided on the clamping rod 411, which is located in the limiting groove 414. An arc plate 413 is provided on one end of the clamping rod 411 near the axis of the clamping ring 412. The length direction of the arc plate 413 is parallel to the axis direction of the clamping ring 412. The inner arc surface of the arc plate 413 is used to clamp the outer wall of the corrugated tube.

[0033] The drive unit 42 includes a drive screw 421, a sliding block 422, two mating rods 423, a drive motor 424, and a torque sensor 425. The two mating rods 423 correspond to the two clamping rings 412. The mating rods 423 are vertically arranged, with one end rotatably connected to the clamping rings 412. The mating rods 423 slide vertically onto the sliding block 422. The sliding block 422 slides horizontally and perpendicularly to the axis of the clamping rings 412 onto the frame 1. The drive screw 421... The length direction of 21 is parallel to the sliding direction of the sliding block 422. The drive screw 421 is rotatably connected to the frame 1. The sliding block 422 is threadedly connected to the drive screw 421. The drive motor 424 is fixedly mounted on the frame 1. The drive motor 424 is used to drive the drive screw 421 to rotate. The torque sensor 425 is fixedly mounted on the drive motor 424. The torque sensor 425 is electrically connected to the drive motor 424. The torque sensor 425 is used to detect the torque of the output shaft of the drive motor 424.

[0034] The implementation principle of the corrugated pipe cutting device in this application embodiment is as follows: First, positioning adjustment is performed. The positioning frame 31 can slide along the sliding column 51 on the frame 1. After it is adjusted to a position that matches the required cutting position of the corrugated pipe, the adjusting bolt 52 is tightened. The positioning frame 31 is fixed by the force of the bolt head pressing against the anti-slip pad 53. Then, the positioning cylinder 32 drives the "U"-shaped positioning block 33, so that the positioning block 33 is engaged with the annular corrugated position of the corrugated pipe by means of the clearance groove at the lower end, thereby completing the precise positioning of the corrugated pipe and ensuring that the subsequent ring cutting component 2 can cut between the annular corrugations.

[0035] After positioning, the clamping and fixing stage begins. The drive motor 424 starts and drives the drive screw 421 to rotate. The sliding block 422, which is threadedly connected to the drive screw 421, moves in a direction perpendicular to the axis of the corrugated pipe. The sliding block 422 drives the clamping rings 412 on both sides to rotate synchronously through the cooperating rod 423. During the rotation of the clamping rings 412, their limiting grooves 414 push the limiting posts 415 on the clamping rod 411, causing the clamping rod 411 to move closer to the corrugated pipe along its own length until the inner arc surface of the arc plate 413 at the end of the clamping rod 411 is in contact with the outer wall of the corrugated pipe. At the same time, the torque sensor 425 set on the drive motor 424 detects the torque of the motor output shaft in real time. When the torque reaches the preset value, the torque sensor 425 feeds back a signal to stop the drive motor 424, thus achieving stable and damage-free clamping of the corrugated pipe and effectively limiting the movement and rotation of the corrugated pipe during the cutting process.

[0036] Finally, the circumferential cutting operation is performed, which drives the motor 241 to run. The bevel gear 242 on its output shaft meshes with the bevel gear ring 243 on the outer wall of the circumferential cutting tube 21, causing the circumferential cutting tube 21 to rotate coaxially around the corrugated tube. At the same time, the three cutting cylinders 23 on the circumferential cutting tube 21 synchronously drive the piston rod to extend, pushing the cutter 22 to cut into the corrugated tube radially along the circumferential cutting tube 21. The cutter 22 completes the circumferential cutting of the corrugated tube as the circumferential cutting tube 21 rotates, and finally obtains a corrugated tube product that meets the length specifications.

[0037] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A bellows cutting device, characterized in that: It includes a frame (1), a circumferential cutting component (2) and a positioning component (3). The positioning component (3) includes a positioning frame (31), a positioning cylinder (32) and a positioning block (33). The positioning frame (31) is arranged on the frame (1), the positioning cylinder (32) is arranged on the positioning frame (31), and the positioning block (33) is arranged on the piston rod of the positioning cylinder (32). The positioning cylinder (32) is used to drive the positioning block (33) to approach or move away from the outer wall of the bellows. An avoidance groove is formed on the lower end surface of the positioning block (33), and the positioning block (33) is in a "冂" shape. The positioning block (33) is used to be clamped on the annular corrugation position of the bellows through the avoidance groove.

2. The bellows cutting device according to claim 1, characterized in that: An adjusting part (5) is arranged on the positioning frame (31). The positioning frame (31) is slidably connected to the frame (1) along the length direction of the bellows. The adjusting part (5) includes two sliding columns (51), an adjusting bolt (52) and an anti-slip pad (53). The two sliding columns (51) are distributed along the direction perpendicular to the length direction of the bellows. The sliding columns (51) are arranged on the frame (1), the anti-slip pad (53) is arranged on the positioning frame (31), the tail of the adjusting bolt (52) sequentially passes through the anti-slip pad (53) and the positioning frame (31) and is threadedly connected to the frame (1), and the head of the adjusting bolt (52) abuts against the anti-slip pad (53).

3. The bellows cutting device according to claim 1, characterized in that: The circumferential cutting component (2) includes a circumferential cutting pipe (21), a cutting knife (22), a cutting cylinder (23) and a driving part (24). The circumferential cutting pipe (21) is coaxially arranged with the bellows. The circumferential cutting pipe (21) is rotatably connected to the frame (1). The length direction of the cutting cylinder (23) is parallel to the radial direction of the circumferential cutting pipe (21). The cylinder body of the cutting cylinder (23) is arranged on the circumferential cutting pipe (21), and the cutting knife (22) is arranged on the piston rod of the cutting cylinder (23).

4. The bellows cutting device according to claim 3, characterized in that: The driving part (24) includes a driving motor (241), a bevel gear (242) and a bevel gear ring (243). The bevel gear ring (243) is coaxially arranged with the circumferential cutting pipe (21). The bevel gear ring (243) is arranged on the outer wall of the circumferential cutting pipe (21). The driving motor (241) is arranged on the frame (1). The bevel gear (242) is arranged on the output shaft of the driving motor (241), and the bevel gear (242) meshes with the bevel gear ring (243).

5. The bellows cutting device according to claim 3, characterized in that: The frame (1) is also provided with a limiting component (4) for restricting the rotation of the bellows. The limiting component (4) includes two clamping members (41) and a driving member (42). The two clamping members (41) are located on both sides of the ring-cutting component (2). The clamping members (41) include several clamping rods (411) and clamping rings (412). The several clamping rods (411) are evenly distributed circumferentially along the axis of the ring-cutting tube (21). The clamping rods (411) are perpendicular to the axis of the bellows. The clamping rods (411) slide along the length of the clamping rods (411) and are connected to the frame (21). 1) The clamping ring (412) is coaxially arranged with the circumferential tube (21). The clamping ring (412) is rotatably connected to the frame (1). A limiting groove (414) is provided on the clamping ring (412). The distance from the limiting groove (414) to the axis of the corrugated tube gradually decreases from one end of the limiting groove (414) to the other end. A limiting post (415) is provided on the clamping rod (411). The limiting post (415) is located in the limiting groove (414). The driving member (42) is used to drive the two clamping rings (412) to rotate simultaneously.

6. The bellows cutting device according to claim 5, characterized in that: The clamping rod (411) has an arc plate (413) at one end facing the bellows. The axis of the arc plate (413) is parallel to the length direction of the bellows, and the inner arc surface of the arc plate (413) is used to abut against the outer wall of the bellows.

7. The bellows cutting device according to claim 5, characterized in that: The driving component (42) drives the screw (421), the sliding block (422), the two mating rods (423), and the driving motor (424). The sliding block (422) is slidably connected to the frame (1) along the length direction perpendicular to the bellows. The two mating rods (423) correspond to the two clamping rings (412). One end of the mating rod (423) is rotatably connected to the clamping ring (412). The length direction of the mating rod (423) is perpendicular to the sliding direction of the sliding block (422). The mating rod (423) is slidably connected to the sliding block (422) along the length direction of the mating rod (423). The driving motor (424) is used to drive the sliding block (422) to move.

8. The bellows cutting device according to claim 7, characterized in that: The drive unit (42) further includes a torque sensor (425) for detecting the torque of the drive motor (424), the torque sensor (425) being disposed on the drive motor (424) and electrically connected to the drive motor (424).

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