Knotless suture hook machine tension shaft

Abstract

The utility model discloses a kind of knotless thread binding hook machine with tension shaft, belong to the technical field of binding hook, including inner shaft sleeve, tension control component and outer wire sleeve, when installing outer wire sleeve, rotating the limiting ring on inner shaft sleeve can be realized quick fixing;Tension control component can directly adjust the tension of subline, change spring compression degree by rotating knob, and then adjust the friction of gasket structure, to control the rotational speed of tubular shaft sleeve body;When replacing outer wire sleeve, tension does not need to be re-tuned, because spring elastic deformation state remains stable, the tension shaft solves the problem that traditional tension shaft is complicated to replace, tension is easy to lose, control precision is low and durability is poor, can improve the efficiency of binding hook operation, ensure that binding hook quality consistency, and prolong the overall service life of equipment.

Description

Technical Field

[0001] This utility model relates to the field of hook binding technology, and more specifically, to a tension shaft for a knotless hook binding machine. Background Technology

[0002] In the field of hook tying technology, especially for the binding of fishing lines and hooks, traditional manual hook tying methods are inefficient and greatly affected by the skill level of the operator, making it difficult to guarantee the stability of hook tying quality. Therefore, various hook tying machines have gradually become the mainstream equipment in the industry. However, existing hook tying machines still have many problems that need to be solved in practical applications, among which the cumbersome nature of tension adjustment and replacement of outer line sleeves is particularly prominent.

[0003] Chinese Patent Publication No. CN221807734U discloses a winding device and a bionic hook knotless binding device. This solution, by installing the winding device within the bionic hook knotless binding device, binds the binding line to the outside of the fishing line and hook. Compared to existing winding devices that are fixed in the binding machine with screws, the winding device in this utility model is snapped into the bionic hook knotless binding device, reducing the use and assembly of screws and other connecting parts. This reduces the labor intensity of the production and assembly of the bionic hook knotless binding device, improves its production and assembly efficiency, and lowers its production cost. However, in practical implementation, the following drawbacks exist: the tension control of this device relies heavily on a single tension shaft structure. Each time the outer sleeve is replaced, the preset tension must be completely released before the old outer sleeve can be removed and the new one installed. After the new outer sleeve is installed, the tension needs to be readjusted, which is time-consuming and makes it difficult to ensure the consistency of tension after each adjustment, seriously affecting the efficiency and quality of batch hook binding operations.

[0004] Therefore, a tension shaft for a knotless sub-line binding machine is proposed to address the above problems. Utility Model Content

[0005] 1. Technical problems to be solved

[0006] In view of the problems existing in the prior art, the purpose of this utility model is to provide a tension shaft for a knotless sub-line binding machine, which can realize the functions of convenient and quick replacement of the outer sleeve and no need for repeated tension adjustment.

[0007] 2. Technical Solution

[0008] To solve the above problems, the present invention adopts the following technical solution.

[0009] A tension shaft for a knotless thread binding machine includes an inner bushing, inside which a tension control component is detachably installed, and outside which an outer thread sleeve is rotatably installed.

[0010] Furthermore, the inner bushing includes a tubular bushing body, one end of which is fixedly connected to a limiting end, and a positioning ring is provided at the end of the tubular bushing body away from the limiting end. A threaded end is fixedly installed inside the tubular bushing body, and a through hole is provided at the center of the threaded end.

[0011] Furthermore, a bearing is fixedly installed at one end inside the tubular bushing body, a gasket structure is installed in the inner cavity of the tubular bushing body, a bearing is fixedly installed at the other end inside the tubular bushing body, a spring box is installed inside the bearing, and a limit ring is threadedly connected to the outer surface of the positioning ring.

[0012] Furthermore, the gasket structure includes multiple staggered wear-resistant gaskets and plastic brake pads.

[0013] Furthermore, the tension control assembly includes a central lead screw, one end of which is provided with an adjusting threaded section, the other end with a fixing threaded section, and the center is a square connecting section.

[0014] Furthermore, a limiting piece is fixedly connected to the outer surface of the fixed threaded section, a spring is sleeved on the outer surface of the adjusting threaded section, a flange seat is slidably connected to the outer surface of the adjusting threaded section, and the flange seat abuts against the spring, and a knob is threadedly connected to the outermost end of the adjusting threaded section.

[0015] 3. Beneficial effects

[0016] Compared with existing technologies, the advantages of this utility model are:

[0017] (1) This solution features convenient replacement of the outer sleeve and maintains stable tension, effectively improving work efficiency. Traditional tension shafts require disassembling multiple components when replacing the outer sleeve, and the tension needs to be readjusted after replacement, which is cumbersome and time-consuming. However, this solution uses a threaded connection design between the limiting ring and the positioning ring, which allows for quick disassembly and installation of the outer sleeve by simply rotating the limiting ring, without the need for complex tools. At the same time, the elastic deformation of the spring is stable after tension adjustment, and the spring force state remains unchanged during the replacement of the outer sleeve, thus maintaining the previously adjusted tension parameters. This avoids repeated adjustments, significantly shortens the work preparation time, and improves the overall hook binding efficiency, making it particularly suitable for production scenarios that require frequent replacement of different specifications of sub-lines.

[0018] (2) This solution offers high tension adjustment accuracy and stability, ensuring consistent hook quality. Traditional tension shafts use single-material gaskets, whose friction coefficient is prone to change due to wear, leading to decreased tension control accuracy. This solution employs a design where wear-resistant gaskets and plastic brake pads are interleaved, both providing stable friction coefficients. The high wear resistance of the wear-resistant gaskets prevents friction coefficient fluctuations caused by long-term use. Simultaneously, the adjusting thread section of the central screw uses a precision fine-pitch thread, allowing for fine-tuning of tension through knob rotation, meeting the precise tension requirements of different specifications of sub-lines. Furthermore, the placement of bearings one and two ensures smooth shaft rotation, preventing tension fluctuations caused by rotational jamming. This guarantees consistent sub-line tension across different batches of hook products, improving hook quality stability and reducing defective products due to abnormal tension. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a partial sectional view of the inner bushing of this utility model;

[0021] Figure 3 This is a schematic diagram of the tension control component of this utility model;

[0022] Figure 4 This is a schematic diagram of the gasket structure of this utility model.

[0023] Explanation of the labels in the diagram:

[0024] 1. Inner bushing; 11. Tubular bushing body; 12. Bearing 1; 13. Gasket structure; 131. Wear-resistant gasket; 132. Plastic brake pad; 14. Bearing 2; 15. Spring box; 16. Limiting ring; 17. Limiting end; 18. Threaded end; 19. Positioning ring; 2. Tension control assembly; 21. Center screw; 211. Adjusting threaded section; 212. Fixed threaded section; 213. Square connecting section; 22. Limiting piece; 23. Knob; 24. Spring; 25. Flange seat. Detailed Implementation

[0025] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0026] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0027] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0028] Example 1:

[0029] Please see Figure 1 - Figure 4 A tension shaft for a knotless wire binding machine includes an inner shaft sleeve 1, a tension control component 2 detachably installed inside the inner shaft sleeve 1, and an outer wire sleeve 3 rotatably installed outside the inner shaft sleeve 1.

[0030] The inner bushing 1 includes a tubular bushing body 11, one end of which is fixedly connected to a limiting end 17, and a positioning ring 19 is provided at the end of the tubular bushing body 11 away from the limiting end 17. A threaded end 18 is fixedly installed inside the tubular bushing body 11, and a through hole is provided at the center of the threaded end 18.

[0031] A bearing 12 is fixedly installed at one end inside the tubular bushing body 11. A gasket structure 13 is installed inside the tubular bushing body 11. A bearing 14 is fixedly installed at the other end inside the tubular bushing body 11. A spring box 15 is installed inside the bearing 14. A limit ring 16 is threadedly connected to the outer surface of the positioning ring 19.

[0032] The gasket structure 13 includes multiple staggered wear-resistant gaskets 131 and plastic brake pads 132.

[0033] The inner bushing 1 serves as the supporting foundation for the entire tension shaft. Its tubular bushing body 11 is made of high-strength aluminum alloy. This material not only possesses excellent structural strength, capable of withstanding the weight of the outer sleeve 3 and the sub-line, as well as the radial force during rotation, but also has a lighter weight, reducing the inertia during shaft rotation and preventing sudden fluctuations in sub-line tension due to excessive inertia. The limiting end 17, fixedly connected to one end of the tubular bushing body 11, is made of stainless steel. The high hardness and wear resistance of stainless steel ensure that the limiting end 17 is not easily deformed or worn during long-term contact and limiting with the outer sleeve 3, guaranteeing the axial positioning accuracy of the outer sleeve 3. The positioning ring 19, located at the end of the tubular bushing body 11 away from the limiting end 17, is an integrally formed structure with the tubular bushing body 11, also made of high-strength aluminum alloy. Its outer surface is machined with precision threads for cooperating with the limiting ring 16 to limit and fix the outer sleeve 3. The threaded end 18, which is fixedly installed inside the tubular bushing body 11, is made of stainless steel. The through hole in the center is used for the central screw 21 of the tension control component 2 to pass through. The corrosion resistance of stainless steel can prevent the threaded end 18 from getting stuck due to rust during long-term contact with the central screw 21.

[0034] The bearing 12, fixedly mounted at one end, and the bearing 14, fixedly mounted at the other end, both inside the tubular bushing body 11 are deep groove ball bearings made of bearing steel. Deep groove ball bearings have good rotational accuracy and wear resistance, reducing frictional loss during the rotation of internal components of the tubular bushing body 11. This ensures the smoothness of the outer sleeve 3 as it rotates with the tubular bushing body 11, preventing momentary fluctuations in the tension of the sub-wire due to bearing jamming. The gasket structure 13 installed inside the tubular bushing body 11 includes multiple staggered wear-resistant gaskets 131 and plastic brake pads 132. The wear-resistant gaskets 131 are made of silicon carbide ceramic, which has extremely high wear resistance and a stable coefficient of friction, extending the service life of the gasket structure 13. The plastic brake pads 132 are made of polytetrafluoroethylene, which has a stable coefficient of friction and good self-lubricating properties, preventing abnormal noise or excessive wear during the clamping friction process. The staggered distribution of these two materials increases the contact area, making the frictional force more uniform and ensuring the linear accuracy of tension adjustment. The spring box 15 installed inside the bearing 2 14 is made of aluminum alloy, and its inner wall is machined with a smooth guide surface to ensure the smooth sliding of the spring box 15 inside the tubular bushing body 11, and to prevent the force of the spring 24 from being unevenly transmitted to the gasket structure 13 due to jamming. The limiting ring 16 with threaded connection on the outer surface of the positioning ring 19 is made of engineering plastic. Engineering plastic is not only lightweight, but also has good insulation and anti-slip properties, which makes it easy for operators to manually rotate and disassemble. At the same time, its surface is machined with anti-slip texture to increase the grip friction when the operator rotates and prevent slippage.

[0035] The tension control assembly 2 includes a central lead screw 21, one end of which is provided with an adjusting thread section 211, the other end of which is provided with a fixing thread section 212, and the center is a square connecting section 213.

[0036] A limit plate 22 is fixedly connected to the outer surface of the fixed thread section 212, a spring 24 is sleeved on the outer surface of the adjusting thread section 211, a flange seat 25 is slidably connected to the outer surface of the adjusting thread section 211, and the flange seat 25 abuts against the spring 24. A knob 23 is threadedly connected to the outermost end of the adjusting thread section 211.

[0037] Both the adjusting threaded section 211 at one end and the fixed threaded section 212 at the other end of the central lead screw 21 are machined with precision fine threads. These fine threads provide high adjustment accuracy, allowing for fine-tuning of tension to meet the tension requirements of different specifications of sub-lines. The square connecting section 213 in the center connects to the drive mechanism of the binding machine. The square structure ensures stable power transmission and prevents slippage of the central lead screw 21 during rotation. The limiting plate 22, fixedly connected to the outer surface of the fixed threaded section 212, is made of stainless steel and is welded to the central lead screw 21. The end face of the limiting plate 22 has a smooth surface for contact with the gasket structure 13, ensuring uniform force distribution on the gasket structure 13 during clamping. The spring 24, sleeved on the outer surface of the adjusting threaded section 211, is made of spring steel. Spring steel has good elastic limit and fatigue strength, ensuring that the spring 24 is not prone to permanent deformation during long-term compression and relaxation cycles, thus guaranteeing the stability of tension parameters. The flange seat 25, which is slidably connected to the outer surface of the adjusting thread section 211, is made of aluminum alloy. Its inner wall is machined with smooth through holes to ensure smooth sliding of the flange seat 25 on the adjusting thread section 211. One end of the flange seat 25 abuts against the spring 24, and the other end contacts the knob 23, converting the rotational force of the knob 23 into axial pressure on the spring 24. The knob 23, whose outermost thread is connected to the adjusting thread section 211, is made of engineering plastic. Its outer surface is machined with anti-slip textures for easy manual adjustment. Simultaneously, the internal threads of the knob 23 precisely match the threads of the adjusting thread section 211, ensuring stability during the adjustment process.

[0038] The outer sleeve 3, as the component for winding the lead wire, is made of ABS engineering plastic. ABS plastic has good surface smoothness and wear resistance, which can prevent wear on the lead wire during winding and unwinding. At the same time, its lightweight characteristics can reduce the inertia when the shaft rotates, ensuring the stability of the lead wire tension. The inner wall of the outer sleeve 3 is machined with smooth channels that match the outer surface of the tubular bushing body 11, ensuring that the outer sleeve 3 can slide smoothly on the outer surface of the tubular bushing body 11, and the fit clearance between the two is controlled within a reasonable range, avoiding both excessive clearance causing the outer sleeve 3 to wobble and excessive clearance increasing rotational resistance.

[0039] Working principle:

[0040] During the outer sleeve installation phase, the outer sleeve 3 first needs to be fixed to the outer surface of the tubular bushing body 11. The operator manually rotates the limiting ring 16. Since the limiting ring 16 and the positioning ring 19 are threadedly connected, during rotation, the limiting ring 16 gradually disengages from the positioning ring 19 along the axial direction of the tubular bushing body 11 until it is completely removed from the tubular bushing body 11. Then, the pre-wound outer sleeve 3 is slidably installed along the axial direction of the tubular bushing body 11, so that one end of the outer sleeve 3 is tightly fitted with the limiting end 17 on the tubular bushing body 11, and the other end contacts the end face of the positioning ring 19. Afterwards, the limiting ring 16 is rotated in the opposite direction, so that the limiting ring 16 is re-threadedly connected to the outer surface of the positioning ring 19, and rotation continues until the end face of the limiting ring 16 is tightly abutted against the other end face of the outer sleeve 3. Thus, through the bidirectional limiting action of the limiting end 17 and the limiting ring 16, the outer sleeve 3 is firmly fixed to the outer surface of the tubular bushing body 11. In the subsequent hook binding operation, when the drive mechanism of the hook binding machine drives the central screw 21 to rotate, the central screw 21 will transmit power to the inner bushing 1 through the square connecting section 213, causing the tubular bushing body 11 to rotate accordingly. The outer sleeve 3, because it is fixed by the limiting end 17 and the limiting ring 16, will rotate synchronously with the tubular bushing body 11, thereby achieving stable laying of the sub-line.

[0041] During the tension adjustment phase, the operator can change the tension of the sub-line by adjusting the tension control component 2 according to the specifications of the sub-line and the requirements of the binding hook. Specifically, the operator manually rotates the knob 23 of the tension control component 2. Since the knob 23 is threadedly connected to the adjusting thread section 211 of the central screw 21, rotating the knob 23 will cause it to move axially along the adjusting thread section 211. When it is necessary to increase the sub-line tension, rotating the knob 23 clockwise will move the knob 23 closer to the flange seat 25, generating axial pressure on the flange seat 25. This causes the flange seat 25 to slide along the adjusting thread section 211 towards the spring 24, thereby compressing the spring 24. Since one end of the spring 24 abuts against the flange seat 25 and the other end abuts against the spring box 15, the spring 24 generates an elastic reaction force after being compressed, and transmits this force to the spring box 15, causing the spring box 15 to slide along the inner cavity of the tubular bushing body 11 towards the gasket structure 13. As the spring box 15 slides, it exerts a clamping force on the gasket structure 13, causing the multiple staggered wear-resistant gaskets 131 and the plastic brake pads 132 to press against each other, increasing the friction between the gasket structure 13, the limiting plate 22, and the spring box 15. When the tubular bushing body 11 rotates, this friction hinders its rotation, causing the rotation speed of the tubular bushing body 11 to slow down. The outer cable sleeve 3 rotates synchronously with the tubular bushing body 11, and its rotation speed also slows down, reducing the cable release speed and thus increasing the cable tension. Conversely, when it is necessary to reduce the cable tension, rotating the knob 23 counterclockwise moves the knob 23 away from the flange seat 25. The pressure of the flange seat 25 on the spring 24 decreases, and the spring 24 gradually recovers its elastic deformation, weakening the force on the spring box 15. The clamping force of the spring box 15 on the gasket structure 13 decreases, and the friction between the gasket structure 13, the limiting plate 22, and the spring box 15 decreases. At this time, the resistance encountered by the tubular bushing body 11 when rotating decreases, the rotation speed increases, the rotation speed of the outer sleeve 3 also increases, the feeding speed of the sub-line increases, and the tension of the sub-line decreases.

[0042] During the outer sleeve replacement stage, when it is necessary to replace the outer sleeve 3 with one wound with a different specification of sub-line, the operator only needs to manually rotate the limiting ring 16 to remove it from the positioning ring 19, and then slide the old outer sleeve 3 along the axial direction of the tubular bushing body 11 to remove it. The new outer sleeve 3 with the sub-line wound is then slidably installed on the outer surface of the tubular bushing body 11 and re-secured by the limiting ring 16. During this process, the spring 24 in the tension control assembly 2 remains in the previously adjusted compressed or relaxed state, its elastic deformation remains unchanged, and the force exerted on the spring box 15 and the gasket structure 13 remains stable. Therefore, the previously adjusted tension parameters are retained, and there is no need to readjust the tension; the hook binding operation can proceed directly.

[0043] The above description is merely a preferred embodiment of this utility model; however, the protection scope of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in this utility model, based on the technical solution and its improved concept, should be included within the protection scope of this utility model.

Claims

1. A tension shaft for a knotless sub-line binding machine, comprising an inner bushing (1), characterized in that: The inner bushing (1) is detachably fitted with a tension control component (2), and the inner bushing (1) is rotatably fitted with an outer sleeve (3).

2. The tension shaft for the knotless sub-line binding machine according to claim 1, characterized in that: The inner bushing (1) includes a tubular bushing body (11), one end of which is fixedly connected to a limiting end (17), and a positioning ring (19) is provided at the end of the tubular bushing body (11) away from the limiting end (17). A threaded end (18) is fixedly installed inside the tubular bushing body (11), and a through hole is provided at the center of the threaded end (18).

3. The tension shaft for the knotless sub-line binding machine according to claim 2, characterized in that: A bearing (12) is fixedly installed at one end inside the tubular bushing body (11), a gasket structure (13) is installed in the inner cavity of the tubular bushing body (11), a bearing (14) is fixedly installed at the other end inside the tubular bushing body (11), a spring box (15) is installed inside the bearing (14), and a limit ring (16) is threadedly connected to the outer surface of the positioning ring (19).

4. The tension shaft for the knotless sub-line binding machine according to claim 3, characterized in that: The gasket structure (13) includes multiple staggered wear-resistant gaskets (131) and plastic brake pads (132).

5. The tension shaft for the knotless sub-line binding machine according to claim 1, characterized in that: The tension control assembly (2) includes a central lead screw (21), one end of which is provided with an adjusting thread section (211), the other end of which is provided with a fixing thread section (212), and the center is a square connecting section (213).

6. The tension shaft for the knotless sub-line binding machine according to claim 5, characterized in that: A limiting piece (22) is fixedly connected to the outer surface of the fixed thread section (212), a spring (24) is sleeved on the outer surface of the adjusting thread section (211), a flange seat (25) is slidably connected to the outer surface of the adjusting thread section (211), and the flange seat (25) abuts against the spring (24). A knob (23) is threadedly connected to the outermost end of the adjusting thread section (211).

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