Medical heat shrink tube cutting jig

Abstract

The application relates to a medical heat shrink tube cutting jig, which comprises a frame body, a clamping assembly arranged on the frame body and used for clamping a heat shrink tube and horizontally arranging the heat shrink tube, a rotary cutting blade arranged vertically on the frame body, a rotating frame arranged between the frame body and the rotary cutting blade, a position adjusting assembly arranged on the rotating frame and used for adjusting the relative position between the rotary cutting blade and the heat shrink tube, and a driving assembly arranged on the rotating frame and used for driving the rotating frame to rotate. The application has the effects of improving the finished product quality and production efficiency of the cut heat shrink tube.

Description

Technical Field

[0001] This application relates to the technical field of heat shrink tubing cutting, and in particular to a medical heat shrink tubing cutting fixture. Background Technology

[0002] Medical heat shrink tubing is widely used in the insulation, encapsulation, and fixation of medical devices. Its dimensional accuracy and cut quality directly affect the assembly reliability and safety of medical devices. Therefore, in actual production, the cutting of medical heat shrink tubing not only requires high precision and consistency, but also needs to ensure that the cut surface is flat and burr-free to prevent secondary damage or impact on insulation performance during use.

[0003] In current processing, heat shrink tubing is typically cut circumferentially manually. Operators must first use a ruler to position the tubing and then manually use tools such as utility knives to complete the cut. This method has several problems, the most prominent being that the cutting process is highly dependent on manual experience and skill, resulting in low operational efficiency, poor product consistency, and a high scrap rate. Due to inaccurate manual positioning or deviation in the cutting trajectory, problems such as the starting and ending points of the cut not coinciding and damage to the tubing often occur, seriously affecting product quality and production yield. Utility Model Content

[0004] In order to improve the quality of finished products and production efficiency, this application provides a medical heat shrink tubing cutting fixture.

[0005] The medical heat shrink tubing cutting fixture provided in this application adopts the following technical solution:

[0006] A medical heat shrink tubing cutting fixture includes a frame, on which a clamping assembly is provided for clamping the heat shrink tubing and positioning it horizontally. The frame also includes a vertically positioned rotary cutting blade. A rotating frame is positioned between the frame and the rotary cutting blade. The rotating frame includes a position adjusting assembly for adjusting the relative position between the rotary cutting blade and the heat shrink tubing. The rotating frame is rotatably connected to the frame about the horizontally positioned axis of the heat shrink tubing. A driving assembly for rotating the rotating frame is also provided.

[0007] By employing the above technical solution, uniform circumferential cutting is achieved through the rotation of a rotary cutting blade around the axis of the heat shrink tubing. Combined with a position adjustment and drive mechanism, it can stably cut heat shrink tubing of different specifications. The overall fixture can reduce human positioning errors, making the cutting process more precise and improving the consistency and efficiency of medical products.

[0008] Preferably, the position adjustment component includes a positioning frame, which slides and engages with the rotating frame along the radial direction of the heat shrink tubing. The positioning frame is provided with a pushing component for pushing the positioning frame to slide and a fixing component for fixing the positioning frame on both sides. The rotary cutting blade is detachably fixed on the positioning frame.

[0009] By adopting the above technical solution and utilizing the radial sliding structure of the positioning frame, the blade cutting depth can be adjusted according to the size of the heat shrink tubing. The pushing component facilitates fine-tuning of the position, while the fixing component ensures stability. The overall structure is easy to adjust, which helps to quickly adapt to different products and ensures cutting accuracy.

[0010] Preferably, a slider is fixed on the rotating frame, and a slide rail is fixed on the positioning frame. The length direction of the slide rail is parallel to the sliding direction between the positioning frame and the rotating frame. The slide rail is embedded in the slider, and the slider and the slide rail slide and cooperate along the length direction of the slide rail.

[0011] By adopting the above technical solution, the slide rail and slider work together to make the positioning frame slide smoothly along the set direction, avoiding skewing or shaking, and ensuring accurate blade adjustment path. This structure ensures the controllability of the pre-cutting adjustment stage, which is beneficial to improving the consistency and repeatability of cutting.

[0012] Preferably, the pushing assembly includes a fixed block fixed on the rotating frame, the fixed block being located at one end of the slide rail along its length, an adjusting bolt being provided on the fixed block, the axis of the adjusting bolt being parallel to the length of the slide rail, the adjusting bolt passing through the fixed block and being threadedly connected to the fixed block, the end of the adjusting bolt being pressed against one end of the slide rail along its length, and a return spring being sleeved on the adjusting bolt, the two ends of the return spring being pressed against the fixed block and the slide rail respectively.

[0013] By adopting the above technical solution, the positioning frame can be pushed forward by rotating the adjusting bolt, thus achieving fine adjustment of the blade position. The return spring provides continuous thrust, facilitating return to the original position or maintaining a certain preload, enhancing adjustment sensitivity and user feel, and helping to improve adjustment efficiency and repeatability.

[0014] Preferably, the fixing component includes an abutment block, which is fixed on the rotating frame. The abutment block is located at one end of the slide rail away from the fixing block along its length. An abutment bolt is provided on the abutment block, which is parallel to the length of the slide rail. The abutment bolt passes through the abutment block along its own axis and is threadedly connected to the abutment block. The fixing frame is also provided with a push block, which slides and engages with the rotating frame along the length of the slide rail. The push block is located between the abutment bolt and the slide rail. The end of the abutment bolt abuts against the end of the push block away from the slide rail, and the end of the push block away from the abutment bolt abuts against the end of the slide rail away from the fixing block along its length.

[0015] By adopting the above technical solution, the abutment bolt and push block set on the other side can reverse the positioning frame to form a stable counterforce. After adjustment, the push block is tightened by bolts to prevent the positioning frame from shifting due to operation or vibration, further enhancing the relative stability between the blade and the heat shrink tubing during cutting.

[0016] Preferably, the frame includes a base plate, a support frame, and a rotating frame. The support frame is fixed to the base plate. The rotating frame is rotatably connected to the support frame in a direction parallel to the axis of the heat shrink tubing. The rotating frame is mounted on the rotating frame and rotatably connected to it. The clamping assembly includes a holding block, which is fixed to the support frame. A pressing block is also provided on the rotating frame. A distance adjustment assembly is also provided between the pressing block and the rotating frame. The pressing block and the holding block are respectively provided with arc-shaped grooves corresponding to the heat shrink tubing. The axial direction of any one of the arc-shaped grooves is parallel to the axial direction of the heat shrink tubing.

[0017] By employing the above technical solution, heat shrink tubing is clamped between two blocks with semi-circular grooves, and the clamping force is adjusted through a compression structure, making it adaptable to various pipe diameters. The support structure ensures overall rigidity and relative positioning accuracy, keeping the tubing stable during cutting and preventing displacement or rotation.

[0018] Preferably, the support frame is further provided with a sliding block, which is located on the side of the holding block away from the rotary cutting blade. The sliding block slides and engages with the support frame along the axis of the heat shrink tubing. A positioning post is provided on the sliding block, with the axis of the positioning post parallel to the axis of the heat shrink tubing. The positioning post passes through the sliding block along its own axis, and a positioning nut is fitted on the positioning post. The positioning nut is threadedly connected to the positioning post, and the end face of the positioning nut abuts against the side of the sliding frame away from the holding block. The side of the positioning post near the holding block abuts against the end face of the heat shrink tubing away from the rotary cutting blade.

[0019] By employing the above technical solution, the axial position of the heat shrink tubing is restricted by the sliding block and positioning post, ensuring uniform cutting position. The positioning nut allows for flexible adjustment of the limiting distance, guaranteeing consistent clamping position each time and reducing dimensional errors. This is a key supporting structure for achieving precise batch processing.

[0020] Preferably, the distance adjustment assembly includes an adjustment column and an adjustment block. The adjustment block is fixed on the rotating frame. The adjustment column passes through the adjustment block along its own axis and is threadedly connected to the adjustment block. One end of the adjustment column near the clamping block is rotatably connected to the clamping block. The other end of the adjustment column extends out of the rotating frame and is fixed with a rotating boss for manual rotation. An adjustment spring is also provided on the adjustment column, and both ends of the adjustment spring abut against the adjustment block and the clamping block, respectively.

[0021] By adopting the above technical solution, the adjusting column and the clamping block are rotatably connected, allowing control of the clamping force to accommodate tubes of different specifications. The adjusting spring provides auxiliary reset and elastic adjustment functions during use, preventing damage caused by improper tightening, while also improving the adjustment feel and structural stability.

[0022] Preferably, a fastening assembly for keeping the rotating frame in the working state is provided between the rotating frame and the support frame. The base plate is also provided with a working support column and a positioning support column. When the rotating frame is in the working position, it abuts against the working support column. When the rotating frame is opened, the rotating frame abuts against the positioning support column.

[0023] By adopting the above technical solution, the rotating frame abuts against different support columns in both the working and open states, and the locking structure helps it maintain a stable position. This structure ensures a fixed posture during clamping and cutting, improves operational reliability, and prevents cutting deviation or workpiece loosening caused by misoperation.

[0024] Preferably, the frame is further fixed with a mounting bracket, which is provided with a positioning groove for placing heat shrink tubing. A vertical cutting blade is also provided on the lower side of the positioning groove, and the length direction of the blade is parallel to the axial direction of the heat shrink tubing in the positioning groove.

[0025] By adopting the above technical solution, the positioning groove is used to accurately place the heat shrink tubing, and the vertical cutting blade is set along its axial direction, allowing for longitudinal cutting after circumferential cutting, facilitating the removal of excess material. This structure not only improves cutting integrity and operational efficiency but also expands the fixture's adaptability to different subsequent processing needs, enhancing its overall applicability and versatility.

[0026] In summary, this application includes at least one of the following beneficial technical effects:

[0027] 1. Precise cutting of heat shrink tubing of different diameters and lengths is achieved through adjustable rotary cutting blade position and a stable clamping structure. The rotary cutting structure ensures a complete circular cut, while the vertical cutting function supports subsequent peeling processing. Suitable for various specifications and applications of medical heat shrink tubing, this fixture improves its versatility and adaptability.

[0028] 2. The fixture possesses a complete positioning and locking mechanism, including guide rails and sliders, push blocks and bolt fixing, and fastening supports, effectively preventing displacement caused by vibration or misoperation during the cutting process. The overall structure has high rigidity, runs smoothly, ensures operational safety, and improves processing consistency.

[0029] 3. The blade position and tube clamping can be quickly adjusted by adjusting bolts, return springs, sliding blocks, and positioning pins. The adjustment method is intuitive, allowing operators to easily complete the settings, reducing reliance on manual experience, improving clamping and adjustment efficiency, and making it suitable for mass production. Attached Figure Description

[0030] Figure 1 This is an isometric view of the overall structure of the medical heat shrink tubing cutting fixture in its working state, which is the main embodiment of this application.

[0031] Figure 2 This is an isometric view of the overall structure of the medical heat shrink tubing cutting fixture in the open state of the rotating frame, which is the main feature of this application embodiment;

[0032] Figure 3 This is an isometric view of the main components of the rotating frame in the embodiments of this application;

[0033] Figure 4 This is an isometric view of the main components on the mounting bracket in the embodiments of this application.

[0034] Reference numerals: 1. Base plate; 11. Positioning support column; 12. Working support column; 13. Base rod; 2. Support frame; 3. Rotating frame; 31. Top plate; 32. Top rod; 33. Handle; 4. Rotating frame; 41. Crank handle; 5. Position adjustment assembly; 51. Positioning frame; 52. Blade holder; 521. Rotary cutting blade; 53. Sliding block; 54. Slide rail; 56. Fixing block; 561. Adjusting bolt; 562. Return spring; 57. Abutment block; 58. 59. Abutting bolt; 6. Push block; 7. Clamping assembly; 8. Holding block; 9. Pressing block; 10. Adjusting block; 11. Adjusting column; 12. Adjusting spring; 13. Sliding block; 14. Positioning column; 15. Positioning nut; 16. Mounting bracket; 17. Clamping block; 18. Mounting block; 19. Vertical cutting blade; 20. Push spring; 21. Snap-fit ​​assembly; 22. Positioning rod; 23. L-shaped rod; 24. L-shaped block; 25. Compression spring; 26. Heat shrink tubing. Detailed Implementation

[0035] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0036] This application discloses a medical heat shrink tubing cutting fixture.

[0037] See Figures 1-3 The medical heat shrink tubing cutting fixture includes a frame, which comprises a base plate 1, a support frame 2, and a rotating frame 3. The support frame 2 is fixed to the base plate 1. The rotating frame 3 is rotatably connected to the support frame 2 in a direction parallel to the length of the frame. The rotating frame 3 also includes a top plate 31, on one side of which a handle 33 is provided. A rotating frame 4 is also provided on the rotating frame 3, and a rotary cutting blade 521 is provided on the rotating frame 4. A clamping assembly 6 is also provided between the support frame 2 and the rotating frame 3. The operator can grasp the handle 33 to rotate the rotating frame 3 relative to the support frame 2, place the heat shrink tubing 100 to be cut into the clamping assembly 6, and then close the rotating frame 4 so that the top plate 31 is parallel to the base plate 1. At this time, the heat shrink tubing 100 is clamped by the clamping assembly 6. The operator drives the rotating frame 4 to rotate, and the rotating frame 4 drives the rotary cutting blade 521 to rotate one revolution around the axis of the heat shrink tubing 100, thereby achieving precise cutting of the heat shrink tubing 100.

[0038] A positioning support column 11 is provided on the side of the support frame 2 away from the handle 33 along the width direction of the frame. The positioning support column 11 is vertically arranged. When the rotating frame 3 is opened, the rear side of the rotating frame 3 abuts against the upper side of the positioning support column 11. There are two positioning support columns 11 spaced apart along the width direction of the frame. A working support column 12 is also provided on the side of the support frame 2 near the handle 33 along the width direction of the frame. The working support column 12 is vertically arranged. When the top plate 31 is parallel to the bottom plate 1 and the clamping assembly 6 clamps the heat shrink tubing 100, the lower side of the top plate 31 abuts against the upper surface of the working support column 12.

[0039] A fastening assembly 8 is also provided between the base plate 1 and the top plate 31. The fastening assembly 8 is located on the side of the support frame 2 opposite to any positioning support column 11 along the width direction of the frame. The fastening assembly 8 includes a positioning rod 81 and an L-shaped rod 82. The length direction of the positioning rod 81 is parallel to the length direction of the frame and is fixed to the base plate 1. An L-shaped block 83 is also provided on the top plate 31. The short side of the L-shaped block 83 is fixed to the top plate 31, and the long side extends downward. The middle part of the L-shaped rod 82 is rotatably connected to the lower end of the long side of the L-shaped block 83 in a direction parallel to the length direction of the frame. The lower end of the L-shaped rod 82 is formed with a hook, which can hook onto the lower side of the positioning rod 81. A compression spring 84 is also fixed between the upper end of the L-shaped rod 82 and the lower side of the short side of the L-shaped block 83. The operator can press the upper end of the L-shaped rod 82 to rotate the L-shaped rod 82, thereby causing the hook to hook or release the positioning rod 81, thus achieving the positioning of the rotating frame 3.

[0040] The clamping assembly 6 includes a holding block 61 fixed on the support frame 2 and a pressing block 62 disposed on the rotating frame 3. The holding block 61 and the pressing block 62 are disposed correspondingly. The holding block 61 and the pressing block 62 are respectively provided with arc-shaped grooves corresponding to the heat shrink tube 100. The axial direction of any arc-shaped groove is parallel to the axial direction of the heat shrink tube 100 when it is located inside the clamping assembly 6.

[0041] A distance adjustment assembly is provided between the clamping block 62 and the top plate 31. The distance adjustment assembly includes an adjustment column 64 and an adjustment block 63. The lower end of the adjustment block 63 passes through the top plate 31 and is fixedly connected to the top plate 31. The adjustment column 64 passes through the adjustment block 63 along its own axis and is threadedly connected to the adjustment block 63. One end of the adjustment column 64 near the clamping block 62 is rotatably connected to the clamping block 62, and the other end of the adjustment column 64 extends out of the upper end of the adjustment block 63 and is fixed with a rotating boss for manual rotation. An adjustment spring 65 is also provided on the adjustment column 64, with its two ends respectively abutting against the adjustment block 63 and the clamping block 62. One adjustment column 64 is provided at each end of any diagonal line on the horizontal plane of the clamping block 62. The operator can rotate the rotating boss to drive the adjustment column 64 to rotate, thereby changing the distance between the clamping block 62 and the top plate 31.

[0042] The support frame 2 is also provided with a sliding block 66, which is located on the side of the holding block 61 away from the rotary cutting blade 521. The sliding block 66 slides and engages with the support frame 2 along the axis of the heat shrink tubing 100 through a U-shaped groove and bolts. The sliding block 66 is provided with a positioning post 67, whose axis is parallel to that of the heat shrink tubing 100. The positioning post 67 passes through the sliding block 66 along its own axis. A positioning nut 68 is fitted on the positioning post 67, which is threadedly connected to the positioning post 67. The end face of the positioning nut 68 abuts against the side of the sliding frame away from the holding block 61, and the side of the positioning post 67 near the holding block 61 abuts against the end face of the heat shrink tubing 100 away from the rotary cutting blade 521.

[0043] The rotating frame 4 rotates around the axis of the arc-shaped groove on the pressing block 62. A drive assembly is provided on the side of the rotating frame 4 away from the pressing block 62. The drive assembly can be electrically or manually driven. In this embodiment, the drive assembly is a crank 41. The rotation axis of the crank 41 is coaxial with the rotation axis between the rotating frame 4 and the rotating frame 3. The operator can rotate the crank 41 to drive the rotating frame 4 to rotate on the rotating frame 3.

[0044] A position adjustment component 5 is provided on the rotating frame 4. The position adjustment component 5 includes a positioning frame 51, a slider 53 fixed on the rotating frame 4, and a slide rail 54 fixed on the positioning frame 51. The length direction of the slide rail 54 is parallel to the radial direction of the heat shrink tubing 100. The slide rail 54 is embedded in the slider 53, and the slider 53 and the slide rail 54 slide and cooperate along the length direction of the slide rail 54. Pushing components for pushing the positioning frame 51 to slide and fixing components for fixing the positioning frame 51 are respectively provided on both sides of the positioning frame 51. The rotary cutting blade 521 is detachably fixed to the positioning frame 51. The slider 53 is fixed on the rotating frame 4, and the slide rail 54 is fixed on the positioning frame 51. The length direction of the slide rail 54 is parallel to the sliding direction between the positioning frame 51 and the rotating frame 4. The slide rail 54 is embedded in the slider 53, and the slider 53 and the slide rail 54 slide and cooperate along the length direction of the slide rail 54. Pushing components for pushing the slide rail 54 to slide and fixing components for fixing the slide rail 54 are respectively provided on both sides of the slide rail 54.

[0045] The pushing component includes a fixed block 56 fixed on the rotating frame 4. The fixed block 56 is located at one end of the slide rail 54 along its length. An adjusting bolt 561 is provided on the fixed block 56. The axis of the adjusting bolt 561 is parallel to the length of the slide rail 54. The adjusting bolt 561 passes through the fixed block 56 and is threadedly connected to the fixed block 56. The end of the adjusting bolt 561 abuts against one end of the slide rail 54 along its length. A return spring 562 is also sleeved on the adjusting bolt 561. The two ends of the return spring 562 abut against the fixed block 56 and the slide rail 54, respectively.

[0046] The fixing component includes an abutment block 57, which is fixed on the rotating frame 4. The abutment block 57 is located at the end of the slide rail 54 away from the fixing block 56 along its length. An abutment bolt 58 is provided on the abutment block 57. The abutment bolt 58 is parallel to the length of the slide rail 54 and passes through the abutment block 57 along its own axis and is threadedly connected to the abutment block 57. The fixing frame is also provided with a push block 59. The push block 59 slides and engages with the rotating frame 4 along the length of the slide rail 54 through a U-shaped groove and a bolt. The push block 59 is located between the abutment bolt 58 and the slide rail 54. The end of the abutment bolt 58 abuts against the end of the push block 59 away from the slide rail 54, and the end of the push block 59 away from the abutment bolt abuts against the end of the slide rail 54 away from the fixing block 56 along its length.

[0047] A blade holder 52 is detachably fixed to one end of the positioning frame 51 near the clamping block 62, and a rotary cutting blade 521 is detachably fixed to the blade holder 52. The cutting edge of the rotary cutting blade 521 is perpendicular to the axis of the heat shrink tubing 100 and is used to cut the heat shrink tubing 100 in the radial direction.

[0048] See Figure 1 , Figure 2 , Figure 4 The base plate 1 is also equipped with a mounting bracket 7, on which multiple clamping blocks 71 are fixed, forming positioning grooves that are inclined. A mounting block 72 is also provided on the lower side of the mounting bracket 7, and the mounting block 72 is inclined corresponding to the positioning grooves. A push spring 73 is provided between the bottom of the mounting block 72 and the mounting bracket 7, with one push spring 73 on each side of the mounting block 72 along its length. A vertical cutting blade 721 is detachably fixed to the mounting block 72, and the vertical cutting blade 721 is vertically positioned and inclined corresponding to the positioning grooves.

[0049] See Figures 1-2 Multiple support rods are also provided between the base plate 1 and the top plate 31. Each support rod includes a bottom rod 13 and a top rod 32. The bottom rod 13 is fixed to the base plate 1 and is vertically arranged. The top rod 32 is fixed to the top plate 31, and the axis of the top rod 32 is parallel to the thickness direction of the top plate 31. The lower end face of the top rod 32 is also formed with a conical protrusion, and the upper end face of the bottom rod 13 is correspondingly formed with a conical groove. When the rotating frame 3 rotates to the point where the top plate 31 and the base plate 1 are parallel, the conical protrusion is inserted into the conical groove. After the operator spins and cuts the heat shrink tubing 100, the heat shrink tubing 100 can be embedded into the positioning groove and pulled diagonally downwards, so that the vertical cutting blade 721 cuts the outer side of the heat shrink tubing 100 along the axial direction, which facilitates the operator to peel off the heat shrink tubing 100 later.

[0050] The implementation principle of a medical heat shrink tubing cutting fixture according to an embodiment of this application is as follows: Before the cutting operation, the operator rotates two rotating bosses according to the required size of the heat shrink tubing 100 to be cut, which drives two adjusting columns 64 to rotate, thereby changing the distance between the clamping block 62 and the holding block 61. The relative position between the positioning column 67 and the holding block 61 is adjusted according to the length of the heat shrink tubing 100 to be processed. The adjusting bolt 561 and the abutment bolt 58 are rotated according to the required cutting depth to change the relative position of the positioning frame 51 on the rotating frame 4, thereby changing the relative position between the blade and the heat shrink tubing 100.

[0051] In actual operation, the worker presses down on the L-shaped rod 82 and L-shaped block 83 to separate the hook of the L-shaped rod 82 from the positioning rod 81. Grasping the handle 33, the worker rotates the rotating frame 3 so that its rear side abuts against the positioning support column 11. The worker places the heat shrink tubing 100 into the arc-shaped groove on the holding block 61, so that the tail end of the heat shrink tubing 100 is pressed against the positioning column 67. The rotating frame 3 is rotated so that the top plate 31 and the bottom plate 1 are parallel, and the lower end face of any top rod 32 abuts against the upper end face of the bottom rod 13. The top plate 31 abuts against the working support column 12. The L-shaped rod 82 is driven to rotate by the compression spring 84, causing the hook to engage the positioning rod 81. At this time, the clamping block 62 presses the heat shrink tubing 100 firmly onto the holding block 61. The operator turns the crank handle 41, which drives the rotating frame 4 to rotate around the axis of the heat shrink tubing 100, so that the rotary cutting blade 521 cuts evenly in the circumferential direction, thus achieving a precise circumferential cutting operation on the heat shrink tubing 100.

[0052] 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 medical heat shrink tubing cutting fixture, characterized in that: The device includes a frame, on which a clamping assembly (6) is provided for clamping the heat shrink tubing (100) and making the heat shrink tubing (100) horizontally positioned. The frame is also provided with a rotary cutting blade (521), which is vertically positioned. A rotating frame (4) is provided between the frame and the rotary cutting blade (521). The rotating frame (4) is provided with a position adjusting assembly (5) for adjusting the relative position between the rotary cutting blade (521) and the heat shrink tubing (100). The rotating frame (4) is rotatably connected to the frame about the axis of the horizontally positioned heat shrink tubing (100). The rotating frame (4) is also provided with a driving assembly for driving its rotation.

2. The medical heat shrink tubing cutting fixture according to claim 1, characterized in that: The position adjustment component (5) includes a positioning frame (51), which slides and engages with the rotating frame (4) along the radial direction of the heat shrink tubing (100). The positioning frame (51) is provided with a pushing component for pushing the positioning frame (51) to slide and a fixing component for fixing the positioning frame (51) on both sides. The rotary cutting blade (521) is detachably fixed on the positioning frame (51).

3. A medical heat shrink tubing cutting fixture according to claim 2, characterized in that: A slider (53) is fixed on the rotating frame (4), and a slide rail (54) is fixed on the positioning frame (51). The length direction of the slide rail (54) is parallel to the sliding direction between the positioning frame (51) and the rotating frame (4). The slide rail (54) is embedded in the slider (53), and the slider (53) and the slide rail (54) slide and cooperate along the length direction of the slide rail (54).

4. A medical heat shrink tubing cutting fixture according to claim 3, characterized in that: The pushing assembly includes a fixed block (56) fixed on the rotating frame (4). The fixed block (56) is located at one end of the slide rail (54) along its length. An adjusting bolt (561) is provided on the fixed block (56). The axis of the adjusting bolt (561) is parallel to the length of the slide rail (54). The adjusting bolt (561) passes through the fixed block (56) and is threadedly connected to the fixed block (56). The end of the adjusting bolt (561) abuts against one end of the slide rail (54) along its length. A return spring (562) is also sleeved on the adjusting bolt (561). The two ends of the return spring (562) abut against the fixed block (56) and the slide rail (54) respectively.

5. A medical heat shrink tubing cutting fixture according to claim 4, characterized in that: The fixing component includes an abutment block (57), which is fixed on the rotating frame (4). The abutment block (57) is located at one end of the slide rail (54) away from the fixing block (56) along its length. An abutment bolt (58) is provided on the abutment block (57). The abutment bolt (58) is parallel to the length of the slide rail (54). The abutment bolt (58) passes through the abutment block (57) along its own axis and is threaded with the abutment block (57). The fixed frame is also provided with a push block (59). The push block (59) and the rotating frame (4) slide and cooperate along the length direction of the slide rail (54). The push block (59) is located between the abutting bolt (58) and the slide rail (54). The end of the abutting bolt (58) is pressed against the end of the push block (59) away from the slide rail (54). The end of the push block (59) away from the abutting bolt is pressed against the end of the slide rail (54) away from the fixed block (56) in the length direction of the slide rail (54).

6. A medical heat shrink tubing cutting fixture according to claim 1, characterized in that: The frame includes a base plate (1), a support frame (2), and a rotating frame (3). The support frame (2) is fixed on the base plate (1). The rotating frame (3) is rotatably connected to the support frame (2) in a direction parallel to the axis of the heat shrink tubing (100). The rotating frame (4) is mounted on the rotating frame (3) and is rotatably connected to the rotating frame (3). The clamping assembly (6) includes a holding block (61) which is fixed on the support frame (2). The rotating frame (3) is also provided with a pressing block (62). A distance adjustment assembly is also provided between the pressing block (62) and the rotating frame (3). The pressing block (62) and the holding block (61) are respectively provided with arc-shaped grooves corresponding to the heat shrink tubing (100). The axis of any arc-shaped groove is parallel to the axis of the heat shrink tubing (100).

7. A medical heat shrink tubing cutting fixture according to claim 6, characterized in that: The support frame (2) is also provided with a sliding block (66), which is located on the side of the holding block (61) away from the rotary cutting blade (521). The sliding block (66) slides and cooperates with the support frame (2) along the axis of the heat shrink tube (100). The sliding block (66) is provided with a positioning post (67), which is parallel to the axis of the heat shrink tube (100). The positioning post (67) passes through the sliding block (66) along its own axis. The positioning post (67) is fitted with a positioning nut (68), which is threaded to the positioning post (67). The end face of the positioning nut (68) abuts against the side of the sliding frame away from the holding block (61), and the side of the positioning post (67) near the holding block (61) abuts against the side of the heat shrink tube (100) away from the rotary cutting blade (521).

8. A medical heat shrink tubing cutting fixture according to claim 6, characterized in that: The distance adjustment assembly includes an adjustment column (64) and an adjustment block (63). The adjustment block (63) is fixed on the rotating frame (3). The adjustment column (64) passes through the adjustment block (63) along its own axis and is threadedly connected to the adjustment block (63). One end of the adjustment column (64) near the pressing block (62) is rotatably connected to the pressing block (62). The other end of the adjustment column (64) extends out of the rotating frame (3) and is fixed with a rotating boss for manual rotation. An adjustment spring (65) is also provided on the adjustment column (64). The two ends of the adjustment spring (65) abut against the adjustment block (63) and the pressing block (62) respectively.

9. A medical heat shrink tubing cutting fixture according to claim 6, characterized in that: A fastening assembly (8) for keeping the rotating frame (3) in the working state is provided between the rotating frame (3) and the support frame (2). A working support column (12) and a positioning support column (11) are also provided on the base plate (1). When the rotating frame (3) is in the working position, it abuts against the working support column (12). When the rotating frame (3) is opened, the rotating frame (3) abuts against the positioning support column (11).

10. A medical heat shrink tubing cutting fixture according to claim 1, characterized in that: The frame is also fixed with a mounting bracket (7), which is provided with a positioning groove for placing the heat shrink tubing (100). A vertical cutting blade (721) is also provided on the lower side of the positioning groove. The blade length direction of the vertical cutting blade (721) is parallel to the axial direction of the heat shrink tubing (100) in the positioning groove.

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