Barbed wire cutting assembly and cutting mechanism

Abstract

The application discloses a barbed wire cutting assembly and a cutting mechanism, and aims to solve the problems of high manufacturing cost of a blade and high consumable cost of the blade in the prior art when a cutting machine processes the barbed wire, the cutting assembly or the cutting mechanism configured in the prior art relies on the accuracy of blade production when the cutting machine is aligned, so that the manufacturing cost is high; when the cutting operation is performed, the worn blade can only be replaced with a new blade, so as to meet the alignment requirement that the blade is collinear with the rotation center. The barbed wire cutting assembly and the cutting mechanism are designed, the distance between the blade handle and the rotation center is adjustable, so that the relative distance between the blade and the rotation center can be changed, and then when the blade is worn, the blade can be readjusted to be collinear, so that the technical effect of reusing the blade is achieved, the machining accuracy of the blade is greatly lowered, and the enterprise machining cost and the consumable cost are greatly reduced.

Description

Technical Field

[0001] This invention relates to the field of medical suture technology, specifically to a barbed suture cutting assembly and cutting mechanism. Background Technology

[0002] In the field of medical sutures, barbed sutures are a better suturing solution when performing organ suturing or laparoscopic surgery due to the relatively narrow space. The knot-free and absorbable properties of barbed sutures make them a better suturing solution. The raw material of barbed sutures is cut into unidirectional or opposite barbs in a 360° circumferential direction by a barb cutting machine, and 8-13 barbs are processed per centimeter.

[0003] As the core component of the barb cutting machine, the cutting assembly and cutting mechanism are responsible for processing the barbs on the suture line. The cutting mechanism is used to servo control the movement of the cutting assembly in two degrees of freedom, X and Z, so as to control the cutting assembly to cut into the suture line and fold it. The cutting assembly includes a rotary table and a blade disposed on the front end face of the rotary table. By rotating the rotary table, the posture adjustment of the blade to the required cutting angle can be controlled.

[0004] The drawbacks are as follows: First, during processing, the stitching line and the cutting edge need to be collinear with the rotation center of the rotary table at all times. However, cutting the barbs will cause wear at the contact point between the cutting edge and the stitching line. Therefore, the blade must be replaced after a certain period of time to meet the collinearity condition between the blade and the rotation center, which greatly increases the cost of blade consumables for enterprises. On the other hand, the structure of this cutting component relies on the processing accuracy of the blade to meet the basic condition of collinearity. High-precision blades have higher raw material costs, which further increases the cost of consumables. Summary of the Invention

[0005] This application addresses the shortcomings of the prior art by providing a barbed wire cutting assembly and cutting mechanism. The relative distance between the blade edge and the rotation center is adjustable, so that the collinearity of the blade edge and the rotation center no longer depends on the precision of the blade processing, greatly reducing the cost of the blade. On the other hand, after wear occurs, compensation can be made by adjusting the relative distance, allowing the worn blade to be reused and meet the collinearity requirement again, greatly reducing the replacement frequency of consumables.

[0006] The technical solution adopted by the present invention to solve the above-mentioned technical problems is as follows:

[0007] A barbed wire cutting assembly, comprising:

[0008] A rotating unit, used to control the rotation angle when cutting barbs;

[0009] The tool handle has an oblong hole on its body. A first fastener is installed in the oblong hole to fix the tool handle to the rotation center of the rotating unit. The installation position of the tool handle can be adjusted by changing the relative position of the oblong hole and the rotation center.

[0010] An adjustment mechanism, located at the lower part of the tool holder, is used to push the tool holder to move along its length.

[0011] The blade is mounted on the handle.

[0012] Furthermore, the rotating unit has a groove on its mounting surface relative to the tool holder, and the tool holder is slidably arranged in the groove.

[0013] Furthermore, the adjustment mechanism includes a threaded seat disposed on the rotating unit, the threaded seat having an internal threaded connection to a top block, and the threaded seat being fixed to the lower part of the rotating unit by a fixing member.

[0014] Furthermore, the rotating unit is a worm gear rotary table.

[0015] Furthermore, the handle has a wedge-shaped groove for mounting the blade, the upper edge of the blade is similar to the inner contour of the wedge-shaped groove, the blade is slidably arranged in the wedge-shaped groove, and the handle has a through hole communicating with the inside of the wedge-shaped groove. A second fastener is provided in the through hole to restrict the lateral displacement of the blade.

[0016] A cutting mechanism includes a first linear module and a second linear module. The first linear module is arranged along the height direction, and the second linear module is arranged along the length direction of the barb line. The second linear module is disposed at the free end of the first linear module. The free end of the second linear module is provided with a barb line cutting component as described in any one of claims 1-5. The barb line cutting component can adjust its position in the length and height directions through the first linear module and the second linear module.

[0017] Furthermore, both the first linear module and the second linear module are ball screw linear modules.

[0018] Furthermore, both the first linear module and the second linear module are linear modules with lead screw thread pairs.

[0019] Furthermore, both the first linear module and the second linear module are synchronous belt linear modules.

[0020] The beneficial effects of this invention are as follows:

[0021] 1) Compared with the prior art, the relative distance between the tool holder and the rotation center of the present invention is adjustable, thereby making the relative distance between the blade and the rotation center adjustable. As a result, the collinearity of the blade edge and the rotation center no longer depends on the precision of the blade processing, which greatly reduces the processing cost of the blade.

[0022] 2) Compared with the prior art, the relative distance between the blade edge and the rotary table of the present invention is adjustable, so distance compensation can be performed. After wear occurs, the worn blade can be reused by adjusting the relative distance to meet the collinearity requirement again, which greatly reduces the replacement frequency of consumables and thus reduces production costs.

[0023] 3) Existing blades are mounted on the front face of the rotary table via a shank, and the mounting position of the blade is fixed. Therefore, the contact point between the blade and the barb is fixed, resulting in the grinding point being only one point in the length direction of the blade, which reduces the utilization rate of the blade. The blade of the present invention can be adjusted along its length direction, and the contact point relative to the barb can be adjusted, which further improves the reuse rate of the blade and thus reduces production costs. Attached Figure Description

[0024] Figure 1 This is a three-dimensional schematic diagram of the cutting component in this invention;

[0025] Figure 2 This is a three-dimensional schematic diagram of the cutting mechanism in this invention;

[0026] Figure 3 for Figure 1 An explosion diagram;

[0027] Figure 4 for Figure 1 A schematic diagram of the middle tool holder.

[0028] in:

[0029] 1. Rotating unit;

[0030] 2. Tool holder; 21. Waist-shaped hole; 22. First fastener; 23. Wedge groove; 24. Through hole; 25. Second fastener; 26. Blade;

[0031] 3. Adjustment mechanism; 31. Threaded seat; 32. Top block; 33. Fixing component;

[0032] 4. First linear module; 5. Second linear module; 6. Frame. Detailed Implementation

[0033] The technical solution of the present invention will be further described below with reference to the accompanying drawings.

[0034] like Figures 1 to 4As shown, this invention mainly provides a barb cutting assembly, aiming to solve the problems of high manufacturing cost and high consumable cost of blades when producing barb lines. Existing cutting assemblies or mechanisms rely on the precision of blade manufacturing during blade setting (collinearity between the blade edge and the rotation center), resulting in high manufacturing costs. During cutting, blade wear necessitates replacement with a new blade, thus meeting the requirement of blade alignment between the blade edge and the rotation center. The barb cutting assembly and mechanism designed in this invention have an adjustable distance between the blade holder 2 and the rotation center, thereby changing the relative distance between the blade edge and the rotation center. This allows the blade edge to be readjusted to collinearity when worn, achieving blade reuse while significantly reducing the precision requirements for blade processing, greatly lowering enterprise processing and consumable costs.

[0035] The cutting assembly includes a rotating unit 1, a handle 2, a blade 26, and an adjusting mechanism 3. The rotating unit 1 is used to control the rotation angle when cutting barbs. The handle 2 has a waist-shaped hole 21 on its body. The handle 2 is fixed to the rotation center of the rotating unit 1 by a first fastener 22 in the waist-shaped hole 21. The installation position of the handle 2 is adjusted by changing the relative position of the waist-shaped hole 21 and the rotation center.

[0036] It is understood that the first fastener 22 includes, but is not limited to, the use of anti-loosening combinations such as bolts, screws, or bolt washers.

[0037] In some embodiments, the adjusting mechanism 3 is disposed at the lower part of the tool holder 2, for pushing the tool holder 2 along the length direction ( Figure 2 The adjustment mechanism 3 includes a threaded seat 31 set on the rotating unit 1 (worm gear rotary table). The threaded seat 31 is internally threaded with a top block 32. The threaded seat 31 is fixed to the lower part of the rotating unit 1 by a fixing member 33. The fixing member 33 includes, but is not limited to, the form of anti-loosening combination such as screws, bolts or bolt washers.

[0038] In some embodiments, the rotating unit 1 has a groove on the mounting surface of the tool holder 2, and the tool holder 2 is slidably arranged in the groove. It can be understood that the function of the groove is to provide guidance for the sliding of the tool holder 2, so that the sliding is more stable and remains relatively vertical. Therefore, the cross-sectional shape of the groove can be adapted to the cross-sectional shape of the side of the tool holder 2, and its cross-sectional shape is not limited.

[0039] It is understood that the rotating unit 1 is preferably a worm gear rotary table. As a supplementary embodiment, it can also be a DD motor, a gear reduction mechanism, or other alternative implementation methods.

[0040] In some embodiments, the blade 26 is mounted at the front end of the horizontal side of the handle 2. The handle 2 has a wedge-shaped groove 23 for mounting the blade 26, and the upper edge of the blade 26 is similar to the inner contour of the wedge-shaped groove 23. This allows the blade 26 to slide within the wedge-shaped groove 23. Specifically, to ensure that the cutting point of the barb is not limited to a single position on the blade, the blade mounting position is designed to be adjustable, thereby meeting the need for blade reuse and reducing costs. The adjustment principle is as follows: based on the sliding design of the wedge-shaped groove 23, a through hole 24 communicating with the interior of the wedge-shaped groove 23 is provided on the handle 2. A second fastener 25 is installed within the through hole 24 to press against the blade 26, thereby increasing the friction between the blade 26 and the wedge-shaped groove 23 and limiting its lateral displacement. If the center of the cutting edge is the contact point for cutting the barb line, it will wear down during grinding and no longer meet the collinearity requirement. In this case, the positional relationship of the cutting edge in the length direction can be adjusted by the second fastener 25, thereby changing the contact point for cutting and achieving reuse. It is understandable that the selection of the second fastener 25 is similar to that of the first fastener 22.

[0041] The present invention also discloses a cutting mechanism, which includes a frame 6, a first linear module 4 and a second linear module 5. The first linear module 4 is disposed on the frame 6 along the height direction, and the second linear module 5 is disposed along the length direction of the barb line. The second linear module 5 is disposed at the free end of the first linear module 4, and a barb line cutting component is disposed at the free end of the second linear module 5. The barb line cutting component can be adjusted in length and height direction by means of the first linear module 4 and the second linear module 5.

[0042] It is understandable that the selection of linear modules in the first linear module 4 and the second linear module 5 includes, but is not limited to, using ball screw linear modules, screw thread pair linear modules, synchronous belt linear modules or other linear module forms.

[0043] Preferably, the cutting mechanism includes a frame 6, a first ball screw linear module, and a second ball screw linear module. The first ball screw linear module is vertically mounted on the frame 6, and the second ball screw linear module is mounted on a slide of the first ball screw linear module along the length of the barb line. The cutting component as described in Embodiment 1 is mounted on the slide of the second ball screw linear module. In use, the cutting mechanism as a whole serves as the cutting component of the cutting machine. By adjusting its posture, it is used to cut oblique thorns in a 360-degree circumferential direction along the barb line under servo control.

[0044] It should be noted that the above description is an explanation of the present invention and not a limitation thereof. The scope of the present invention is defined by the claims. Within the scope of protection of the present invention, any form of modification may be made.

Claims

1. A barbed wire cutting assembly, characterized in that: include: Rotating unit (1), which is used to control the rotation angle when cutting barbs; The handle (2) has a waist-shaped hole (21) on its body. The handle (2) is fixed to the rotation center of the rotating unit (1) by a first fastener (22) in the waist-shaped hole (21). The installation position of the handle (2) is adjusted by changing the relative position of the waist-shaped hole (21) and the rotation center. Adjustment mechanism (3), which is arranged at the lower part of the tool holder (2), is used to push the tool holder (2) to move along the length direction; The blade (26) is mounted on the handle (2); The rotating unit (1) has a groove on its mounting surface relative to the tool holder (2), and the tool holder (2) is slidably arranged in the groove; The adjustment mechanism (3) includes a threaded seat (31) disposed on the rotating unit (1), the threaded seat (31) is internally threaded with a top block (32), and the threaded seat (31) is fixed to the lower part of the rotating unit (1) by a fastener (33).

2. The barbed wire cutting assembly as described in claim 1, characterized in that: The rotating unit (1) is a worm gear rotary table.

3. The barbed wire cutting assembly as described in claim 1, characterized in that: The handle (2) has a wedge-shaped groove (23) for mounting the blade (26). The upper edge of the blade (26) is similar to the inner contour of the wedge-shaped groove (23). The blade (26) is slidably arranged in the wedge-shaped groove (23). The handle (2) has a through hole (24) communicating with the inside of the wedge-shaped groove (23). The lateral displacement of the blade (26) is restricted in the through hole (24) by setting a second fastener (25).

4. A cutting mechanism, characterized in that: The device includes a first straight module (4) and a second straight module (5). The first straight module (4) is arranged along the height direction, and the second straight module (5) is arranged along the length direction of the barb line. The second straight module (5) is located at the free end of the first straight module (4). The free end of the second straight module (5) is provided with a barb line cutting component as described in any one of claims 1-3. The barb line cutting component can adjust its position in the length and height directions through the first straight module (4) and the second straight module (5).

5. The cutting mechanism as described in claim 4, characterized in that: Both the first linear module (4) and the second linear module (5) are ball screw linear modules.

6. The cutting mechanism as described in claim 4, characterized in that: Both the first linear module (4) and the second linear module (5) are linear modules of lead screw thread pairs.

7. The cutting mechanism as described in claim 4, characterized in that: Both the first linear module (4) and the second linear module (5) are synchronous belt linear modules.

Images