Wire traction mechanism

Abstract

The utility model aims to provide a wire traction mechanism, which solves the problem of difficulty in wire feeding, comprises a guide pipe and a sleeve which are connected through threads, and is characterized in that a circular truncated cone-shaped cavity and a cavity are arranged in the guide pipe and are communicated with each other; a traction pipe is movably arranged in the circular-truncated-cone-shaped cavity and the cavity, the traction pipe comprises a hollow circular truncated cone and a pipe body, the circular truncated cone is connected with the pipe body, the circular truncated cone is located in the circular-truncated-cone-shaped cavity, and the pipe body is located in the cavity; when the wire is not required to be fed, the guide pipe is reset, and when the guide pipe moves back and forth, the guide pipe has no acting force on the balls, and the balls loosen the wire, so that the problem that the wire is difficult to feed is solved.

Description

Technical Field

[0001] The utility model relates to the field of wire traction, in particular to a wire traction mechanism. Background Art

[0002] In the process of wire production, the rough-processed wire is usually very long, and the wire needs to be further processed. At this time, the wire needs to be fed in sections. After feeding, it must be fed again within the specified time. Different processes require different wire lengths. Usually, the equipment is large and difficult to move.

[0003] Therefore, how to conveniently deliver the wires is a problem that needs to be solved. Utility Model Content

[0004] The utility model aims to provide a wire pulling mechanism, which solves the problem of difficulty in feeding the wire.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] The utility model provides a wire pulling mechanism, comprising a catheter and a sleeve, wherein the catheter and the sleeve are connected by threads, and is characterized in that:

[0007] The conduit has a truncated cone-shaped cavity and a cavity body inside, and the truncated cone-shaped cavity and the cavity body are communicated with each other;

[0008] A traction tube is movably provided inside the truncated cone-shaped cavity and the cavity body, and the traction tube comprises a hollow truncated cone and a tube body, the truncated cone is connected to the tube body, the truncated cone is located in the truncated cone-shaped cavity, and the tube body is located in the cavity;

[0009] The circular table is provided with a plurality of circular holes, the plurality of circular holes are located on the same circumference, each of the circular holes is movably provided with a round ball, and the adjacent round balls have two states of being close to each other and being far away from each other, and the centers of the plurality of round balls pass through the wire;

[0010] The sleeve is connected to the cavity and is located on the moving path of the tube.

[0011] Optionally, the outer diameter of the tube body is smaller than the rear end face of the frustum, the tube body extends to the outside of the sleeve, and the sleeve is located on the moving path of the rear end face of the frustum.

[0012] Furthermore, the traction tube further comprises a blocking disk, the blocking disk is fitted on the rear end surface of the frustum, the blocking disk is sleeved on the tube body, and the sleeve is located on the moving path of the blocking disk.

[0013] Furthermore, a spring is sleeved on the tube body, and two ends of the spring respectively abut against the blocking disk and the sleeve.

[0014] Optionally, a rotating block is sleeved on the outer circumference of the sleeve, and the rotating block has a polygonal shape.

[0015] Optionally, the outer periphery of the front end of the sleeve has a curved surface, and the curved surface shrinks as it extends.

[0016] Due to the application of the above technical solution, the utility model has the following advantages compared with the prior art:

[0017] The utility model provides a wire pulling mechanism. Due to the cooperation between the truncated cone and the truncated cone-shaped cavity, a plurality of round holes are provided on the truncated cone. Round balls are movably provided on the round holes. Adjacent round balls have two states of being close to each other and being far away from each other. The centers of the plurality of round balls pass through the wire. When an external force pushes the catheter, the catheter moves toward the direction where the sleeve is located. Then, the wall where the truncated cone-shaped cavity is located presses the round balls, and the plurality of round balls are squeezed toward the center together to clamp the wire. The wire moves with the catheter. When the wire does not need to be sent, the catheter is reset. When the catheter moves back and forth, the guide has no force on the round balls, and the round balls also loosen the wire, thereby solving the problem of difficult wire sending. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Hereinafter, some specific embodiments of the present invention will be described in detail in an exemplary and non-limiting manner with reference to the accompanying drawings. The same reference numerals in the accompanying drawings indicate the same or similar components or parts. It should be understood by those skilled in the art that these drawings are not necessarily drawn to scale. In the accompanying drawings:

[0019] Figure 1 This is a three-dimensional view of a wire pulling mechanism according to an embodiment of the utility model;

[0020] Figure 2 yes Figure 1 Exploded view shown;

[0021] Figure 3 yes Figure 1 Cross-sectional view shown.

[0022] The description of the accompanying drawings is as follows:

[0023] 1. Catheter; 2. Cannula; 3. Traction tube; 4. Ball; 5. Spring; 11. Frustum-shaped cavity;

[0024] 12. Cavity; 21. Rotating block; 22. Curved surface; 31. Cone; 32. Tube; 33. Circular hole; 34. Blocking disk. DETAILED DESCRIPTION

[0025] The following is a clear and complete description of the technical solution of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0026] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating positions or relationships, are based on the positions or relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0027] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0028] like Figure 1 and Figure 2 and Figure 3 As shown, it includes a catheter 1 and a sleeve 2, the catheter 1 and the sleeve 2 are connected by threads, and a wire 7 passes through the catheter 1 and the sleeve 2, so that the catheter 1 and the sleeve 2 are connected.

[0029] The inside of the catheter 1 has a truncated cone-shaped cavity 11 and a cavity 12. The truncated cone-shaped cavity 11 becomes smaller as it extends. The truncated cone-shaped cavity 11 and the cavity 12 are connected. A traction tube 3 is movably arranged inside the truncated cone-shaped cavity 11 and the cavity 12. The wire 7 is located in the traction tube 3. The traction tube 3 includes a hollow truncated cone 31 and a tube body 32. The truncated cone 31 is connected to the tube body 32. The wire 7 is located in the truncated cone 31 and the tube body 32.

[0030] The cone 31 is located in the cone-shaped cavity 11. The shape of the cone 31 matches the shape of the cone-shaped cavity 11. The tube body 32 is located in the cavity 12. The wire 7 enters from the inlet end of the cone-shaped cavity 11 and then enters from the inlet end of the cone 31. The cone-shaped cavity 11 becomes smaller as it extends toward the inlet end, and the cone 31 becomes smaller as it extends toward the inlet end.

[0031] A plurality of circular holes 33 are provided on the truncated cone 31, and the plurality of circular holes 33 are located on the same circumference. A round ball 4 is movably provided on each circular hole 33, and the wire 7 passes through the center of the plurality of round balls 4. When the wire 7 needs to be delivered, the catheter 1 is pushed first, and the catheter 1 moves toward the direction where the sleeve 2 is located. At this time, the wall of the truncated cone cavity 11 presses the round ball 4, and the plurality of round balls 4 are squeezed toward the wire 7. At this time, the plurality of round balls 4 jointly clamp the wire 7 and move a set distance with the catheter 1, and then the catheter 1 is reset. When the catheter 1 moves back and forth, the force exerted by the inner wall of the catheter 1 on the round ball 4 is reduced, and then the plurality of round balls 4 release the wire 7. After reset, the catheter 1 performs the same steps as above.

[0032] The sleeve 2 is connected to the cavity 12, and the sleeve 2 is located on the moving path of the tube body 32. When the catheter 1 moves in the direction of the sleeve 2, the inner wall of the catheter 1 exerts a force on the ball 4, and the ball 4 pushes the cone 31 and the tube body 32 to move toward the sleeve 2, and the tube body 32 abuts against the front end of the sleeve 2. Then multiple balls 4 jointly clamp the wire 7, and the balls 4 roll in contact with the wall of the cone-shaped cavity 11.

[0033] The external thread of the sleeve 2 is engaged with the internal thread of the catheter 1 . The sleeve 2 extends into the catheter 1 , that is, extends into the cavity 12 . The sleeve 2 blocks and limits the tube body 32 .

[0034] Furthermore, the cross-sectional area of ​​the tube body 32 is smaller than the rear end face of the cone 31, and the tube body 32 extends to the outside of the sleeve 2, which helps the tube body 32 to support the wire 7. The sleeve 2 is located on the moving path of the rear end face of the cone 31. When feeding the wire, the front end of the sleeve 2 blocks the rear end face of the cone 31.

[0035] Furthermore, the traction tube 3 also includes a blocking disk 34, which fits the rear end surface of the cone 31. The blocking disk 34 is sleeved on the tube body 32, and the sleeve 2 is located on the moving path of the blocking disk 34. The blocking disk 34, the cone 31 and the tube body 32 are all integrally formed. When the wire 7 is fed, the front end of the sleeve 2 limits the blocking disk 34, and the blocking disk 34 has a protective effect on the cone 31.

[0036] A spring 5 is sleeved on the tube body 32, and the two ends of the spring 5 respectively abut against the blocking disk 34 and the sleeve 2. When the wire 7 is fed, the spring 5 can play a buffering role. When the catheter 1 is reset, the spring 5 also plays a buffering role, quickly resetting the traction tube 3.

[0037] A rotating block 21 is sleeved on the outer periphery of the sleeve 2. The rotating block 21 has a polygonal shape, which is convenient for rotation using external force. At the same time, the rotating block 21 has a limiting effect. When the rotating block 21 abuts the rear end of the catheter 1, the sleeve 2 can no longer enter the cavity 12.

[0038] The outer periphery of the front end of the sleeve 2 has a curved surface 22, which shrinks as it extends, that is, the sleeve 2 becomes smaller as it extends forward. This facilitates the alignment of the sleeve 2 when it is docked with the catheter 1, making it easy to thread the sleeve 2 and the catheter 1 together.

[0039] The above embodiments are only for illustrating the technical concept and features of the present invention. Their purpose is to enable people familiar with this technology to understand the content of the present invention and implement it accordingly. They are not intended to limit the scope of protection of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the scope of protection of the present invention.

Claims

1. A wire pulling mechanism, comprising a catheter (1) and a sleeve (2), wherein the catheter (1) and the sleeve (2) are connected by threads, characterized in that: The catheter (1) has a truncated cone-shaped cavity (11) and a cavity (12) inside, and the truncated cone-shaped cavity (11) and the cavity (12) are in communication; A traction tube (3) is movably provided inside the truncated cone-shaped cavity (11) and the cavity body (12), the traction tube (3) comprising a hollow truncated cone (31) and a tube body (32), the truncated cone (31) being connected to the tube body (32), the truncated cone (31) being located in the truncated cone-shaped cavity (11), and the tube body (32) being located in the cavity body (12); The truncated table (31) is provided with a plurality of circular holes (33), the plurality of circular holes (33) are located on the same circumference, each of the circular holes (33) is movably provided with a round ball (4), and adjacent round balls (4) have two states of being close to each other and being away from each other, and the centers of the plurality of round balls (4) pass through a wire; The sleeve (2) is connected to the cavity (12), and the sleeve (2) is located on the moving path of the tube body (32).

2. The wire pulling mechanism according to claim 1, characterized in that: The cross-sectional area of ​​the tube body (32) is smaller than the rear end face of the truncated cone (31), the tube body (32) extends to the outside of the sleeve (2), and the sleeve (2) is located on the moving path of the rear end face of the truncated cone (31).

3. The wire pulling mechanism according to claim 2, characterized in that: The traction tube (3) further includes a blocking disk (34), the blocking disk (34) being fitted to the rear end surface of the truncated table (31), the blocking disk (34) being sleeved on the tube body (32), and the sleeve (2) being located on the moving path of the blocking disk (34).

4. The wire pulling mechanism according to claim 3, characterized in that: A spring (5) is sleeved on the tube body (32), and two ends of the spring (5) respectively abut against the blocking disk (34) and the sleeve (2).

5. The wire pulling mechanism according to claim 1, characterized in that: A rotating block (21) is sleeved on the outer circumference of the sleeve (2), and the rotating block (21) has a polygonal shape.

6. The wire pulling mechanism according to claim 1, characterized in that: The outer periphery of the front end of the sleeve (2) is provided with a curved surface (22), and the curved surface (22) contracts as it extends.

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