A fixed-length cutting fixture for pull ropes

Abstract

This utility model discloses a fixed-length cutting fixture for traction ropes, belonging to the technical field of wire rope fixed-length cutting equipment. It includes a base, a positioning mold and a support fixed on the base, a slider slidably disposed between the positioning mold and the support, and a cutting component slidably disposed longitudinally above the positioning mold. The top of the positioning mold has a first positioning groove, and the top of the slider has a second positioning groove corresponding to the first positioning groove. A cutting surface is formed on the side wall of the positioning mold away from the slider, and a limiting surface is formed on the side wall of the slider away from the positioning mold. A spring tube is placed on the support with its front end abutting against the limiting surface. The front end of the traction rope passes through the second positioning groove and the second positioning groove in sequence. This fixed-length cutting fixture for traction ropes first determines the final exposed length of the traction rope by sliding the slider, and then limits the spring tube through the abutting action between the slider and the spring tube. The operation is simple and convenient, greatly improving processing efficiency.

Description

Technical Field

[0001] This utility model relates to the technical field of wire rope fixed-length cutting equipment, and in particular, to a fixed-length cutting fixture for traction ropes. Background Technology

[0002] The applicant previously applied for two patents related to medical devices: a utility model patent with publication number CN219230040U for "an endoscope catheter cutting device" and a utility model patent with publication number CN221205502U for "a disposable endoscope sampling forceps with a rotatable forceps head". The devices involved in the above two patents are used by driving the pulling rope (corresponding to a steel wire rope and a cable respectively) through the operating handle, thereby controlling the operation of the cutting component (or forceps head assembly) in front. In addition, a spring tube is also sleeved on the outside of the pulling rope. The spring tube is a spirally formed tubular structure that cannot be compressed when compressed, but can be bent with the cavity. During installation, the front end of the pulling rope extends to the outside of the front end of the spring tube.

[0003] For the devices involved in the two patents mentioned above, during assembly, the rear end of the pull rope is first connected to the handle, and then the rear end of the spring tube is connected to the handle. At this time, the front end of the pull rope extends beyond the front end of the spring tube. In order to facilitate the connection of the front end of the pull rope and the front end of the spring tube with the cutting assembly (or clamp assembly), the part of the pull rope extending beyond the front end of the spring tube needs to be cut so that the length of the pull rope extending beyond the spring tube is a specific value. The traditional cutting method is to first measure the specific length with a ruler and mark it with a marker, and then place it on the cutting equipment to cut it according to the marked position. This method involves steps such as straightening measurement and marking the cutting point, which is cumbersome, inconvenient for cutting, and the production efficiency needs to be improved. Utility Model Content

[0004] The technical problem to be solved by this utility model is: in order to overcome the above-mentioned defects in the prior art, a pull rope fixed length cutting tool that is easy to operate is provided.

[0005] The technical solution adopted by this utility model to solve its technical problem is: a fixed-length cutting fixture for a pull rope, used to cut the pull rope extending outside the spring tube, including a base, a positioning mold and a support fixed on the base, a slider slidably disposed between the positioning mold and the support, and a cutting piece slidably disposed above the positioning mold along the longitudinal direction. The top of the positioning mold is provided with a first positioning groove, and the top of the slider is provided with a second positioning groove corresponding to the first positioning groove. The side wall of the positioning mold away from the slider forms a cutting surface, and the side wall of the slider away from the positioning mold forms a limiting surface. The spring tube is placed on the support and its front end face abuts against the limiting surface. The front end of the pull rope passes through the second positioning groove and the second positioning groove in sequence.

[0006] Furthermore, a guide rod is fixedly connected to the base, and the slider is slidably sleeved on the outside of the guide rod.

[0007] Furthermore, the top of the base protrudes upward to form a fixing block, the positioning mold and the slider are respectively located on opposite sides of the fixing block, the positioning groove is fixedly connected to the fixing block, and the guide rod is fixedly connected to the fixing block.

[0008] Furthermore, a fixing hole is provided on the surface of the fixing block near the slider, one end of the guide rod is inserted into the fixing hole, and a fixing bolt is installed on the top of the fixing block, with the tail of the fixing bolt extending into the fixing hole and abutting against the outer wall of the guide rod.

[0009] Furthermore, the slider has a through hole, and the slider is sleeved on the outside of the guide rod through the through hole. A locking bolt is installed on the top of the slider, and the tail of the locking bolt extends into the through hole and abuts against the outer wall of the guide rod.

[0010] Furthermore, a groove is formed by a longitudinal downward indentation at the edge of the upper surface of the slider away from the positioning mold. The limiting surface is formed by the side wall of the groove, and the bottom wall of the groove forms a supporting surface. The bottom of the front end of the spring tube is placed on the supporting surface.

[0011] Furthermore, multiple first positioning grooves are provided along the direction perpendicular to the sliding of the slider, and multiple second positioning grooves are provided, with each first positioning groove corresponding to the previous one. A groove is provided on the upper surface of the support along the sliding direction of the slider, and the support can be moved along the direction perpendicular to the sliding of the slider so that the groove is aligned with any one of the second positioning grooves.

[0012] Furthermore, the support has a waist-shaped hole, and the waist-shaped hole is fixedly connected to the base by bolts.

[0013] Furthermore, a scale line is provided at the edge of the side wall of the base along the sliding direction of the slider, and the zero point of the scale line is aligned with the cutting surface.

[0014] The beneficial effects of this utility model are as follows: The pull rope fixed-length cutting fixture of this utility model first moves the slider according to the required length of the pull rope to determine the distance between the cutting surface and the limiting surface. Then, the pull rope passes through the positioning mold and the positioning groove on the slider, and the front end face of the spring tube abuts against the limiting surface. At this time, the length of the pull rope exposed outside the front end of the spring tube is determined. The user can then operate the cutting piece to cut the pull rope. Compared with the traditional fixed-length cutting method, this utility model is simple and convenient to operate, and greatly improves the processing efficiency. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0016] Figure 1 This is a three-dimensional view of the pull rope fixed-length cutting fixture of this utility model; Figure 2 yes Figure 1 A three-dimensional view of the fixed-length cutting fixture with the pull rope shown from another perspective; Figure 3 yes Figure 1 A partially exploded view of the fixed-length cutting fixture for the pull rope shown. Figure 4 yes Figure 1 The front view of the fixed-length cutting fixture for the pull rope shown.

[0017] In the diagram: 10. Pull rope, 20. Spring tube, 1. Base, 11. Fixing block, 111. Fixing hole, 112. Clearance groove, 12. Fixing bolt, 13. Scale line, 2. Positioning mold, 21. First positioning groove, 22. Cutting surface, 3. Slider, 31. Second positioning groove, 32. Limiting surface, 33. Through hole, 34. Locking bolt, 35. Notch, 351. Support surface, 36. Reference line, 4. Support seat, 41. Groove, 42. Waist-shaped hole, 5. Cutting piece, 51. Shearing surface, 6. Guide rod. Detailed Implementation

[0018] The present invention will now be described in detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.

[0019] Please see Figures 1-4This utility model provides a fixed-length cutting fixture for a pull rope, used to cut the part of the pull rope 10 that extends to the outside of the spring tube 20. It includes a base 1, a positioning mold 2, a slider 3, a support 4, and a cutting piece 5. The positioning mold 2 and the support 4 are both fixedly installed on the base 1. The slider 3 is slidably disposed between the positioning mold 2 and the support 4, so that the slider 3 is close to or away from the positioning mold 2. The top of the positioning mold 2 has a first positioning groove 21, and the top of the slider 3 has a second positioning groove 31 corresponding to the first positioning groove 21. The side wall of the positioning mold 2 away from the slider 3 forms a cutting surface 22, and the side wall of the slider 3 away from the positioning mold 2 forms a limiting surface 32. The cutting piece 5 is movably disposed longitudinally above the positioning mold 2, corresponding to the cutting surface 22. The spring tube 20 is placed on the support 4 and its front end face abuts against the limiting surface 32. The front end of the pull rope 10 passes through the second positioning groove 31 and the second positioning groove 21 in sequence. It should be noted that the opening size of the second positioning groove 31 is smaller than the front end face size of the spring tube 20. The second positioning groove 31 can only allow the pulling rope 10 to pass through laterally, but cannot allow the spring tube 20 to pass through.

[0020] In use, the pull rope 10 is placed into the first positioning groove 21 and the second positioning groove 31 corresponding to the top of the positioning mold 2 and the slider 3, and the spring tube 20 is placed on the support seat 4. Then, the pull rope 10 is pulled forward, thereby moving the handle connected to the rear end of the pull rope 10 and the spring tube 20 connected to the front end of the handle forward together until the front end face of the spring tube 20 abuts against the limiting surface 32. At this time, the pull rope 10 is in a straightened state, and the user can operate the cutting piece 5 to move downward. The shearing action between the cutting piece 5 and the cutting surface 22 can cut the pull rope 10. At this time, the length of the pull rope 10 extending outside the front end of the spring tube 20 is cut to the correct length. That is, the length of the pull rope 10 exposed at the front end of the spring tube 20 is the distance between the cutting surface 22 and the limiting surface 32. Before cutting, the user can slide slider 3 to adjust the distance between the limiting surface 32 and the cutting surface 22, that is, determine the length left after the pull rope 10 is finally cut, and then carry out the cutting operation.

[0021] Compared with traditional cutting steps such as measurement and marking of cutting points, this utility model provides a fixed-length cutting fixture. First, the slider 3 is moved into place according to the final length that the pull rope 10 needs to be retained. Then, the pull rope 10 is placed in place and pulled straight forward. At this time, the cutting part 5 can be operated to cut the pull rope 10. The operation is simple and convenient, which greatly improves the processing efficiency.

[0022] In this embodiment, a guide rod 6 is fixedly connected to the base 1. The guide rod 6 is arranged along the sliding direction of the slider 3. The lower surface of the slider 3 is in contact with the upper surface of the base 1, and the slider 3 is slidable relative to the base 1. In addition, the slider 3 is slidably sleeved on the outside of the guide rod 6. The guide rod 6 can guide the sliding of the slider 3, ensuring that the slider 3 moves away from or towards the positioning mold 2. Furthermore, there are two guide rods 6, which are symmetrically arranged. The use of two guide rods 6 improves the sliding stability of the slider 3.

[0023] In a preferred embodiment, the top of the base 1 protrudes upward to form a fixing block 11. The positioning mold 2 and the slider 3 are located on opposite sides of the fixing block 11. The positioning mold 2 is fixedly connected to the fixing block 11, and the guide rod 6 is fixedly connected to the fixing block 11. In this embodiment, a fixing hole 111 is provided on the surface of the fixing block 11 near the slider 3. One end of the guide rod 6 is inserted into the fixing hole 111. A fixing bolt 12 is installed on the top of the fixing block 11, and the tail of the fixing bolt 12 extends into the fixing hole 111 and abuts against the outer wall 5 of the guide rod. Thus, when the user tightens the fixing bolt 12 inward, the guide rod 6 can be pressed and fixed in the fixing hole 111, thereby realizing the fixed connection between the guide rod 6 and the fixing block 11. In addition, a relief groove 112 is recessed on the upper surface of the fixing block 11 to avoid the traction rope 10 passing through the first positioning groove 21 and the second positioning groove 31.

[0024] Furthermore, the slider 3 has a through hole 33, through which it is fitted onto the outside of the guide rod 6. A locking bolt 34 is installed on the top of the slider 3, with its tail extending into the through hole 33 and abutting against the outer wall of the guide rod 6. Thus, when the locking bolt 34 is loosened outward, the slider 3 can slide along the guide rod 6. Once it has slid into place, the locking bolt 34 can be tightened inward to lock the slider 3 onto the guide rod 6.

[0025] In this embodiment, a groove 35 is formed by a longitudinal downward indentation at the edge of the upper surface of the slider 3 away from the positioning mold 2. The limiting surface 32 is formed by the sidewall of the groove 35, and the bottom wall of the groove 35 forms the supporting surface 351. The supporting surface 351 is perpendicular to the limiting surface 32. In use, the bottom of the front end of the spring tube 20 is placed on the supporting surface 351 to support the front end of the spring tube 20 and improve the placement stability of the front end of the spring tube 20. In addition, a groove 41 is formed on the upper surface of the support 4 along the sliding direction of the slider 3. The groove 41 cooperates with the spring tube 20 and corresponds to the second positioning groove 31. In use, the front end of the spring tube 20 is placed in the groove 41, which facilitates the positioning and installation of the spring tube 20.

[0026] The positioning mold 2 is fixedly connected to the base 1 by bolts. The positioning mold 2 is a rectangular block structure. The cutting surface 22 is formed by a longitudinal plane of the positioning mold 2, and the cutting surface 22 is parallel to the limiting surface 32. The cutting piece 5 has a longitudinal shearing surface 51, and the shearing surface 51 is coplanar with the cutting surface 22. In this way, when the cutting piece 5 moves downward, the pulling rope 10 can be cut.

[0027] As a preferred embodiment, multiple first positioning grooves 21 are provided along the vertical direction of sliding with the slider 3, and multiple second positioning grooves 31 are also provided. In this embodiment, three first positioning grooves 21 are sequentially provided along the vertical direction of sliding with the slider 3, and three second positioning grooves 31 are provided on the slider 3. The first positioning grooves 21 and the second positioning grooves 31 correspond one-to-one. Multiple first positioning grooves 21 and second positioning grooves 31 can be provided as spare grooves. When one of the positioning grooves is worn and cannot be used, the pull rope 10 can be placed in other spare positioning grooves to achieve positioning and cutting.

[0028] Correspondingly, the support 4 can slide on the base 1 in a direction perpendicular to the sliding direction of the slider 3, so that the groove 41 on the support 4 is aligned with the second positioning groove 31. In this embodiment, the support 4 is provided with a waist-shaped hole 42, and the waist-shaped hole 42 is fixedly connected to the base 1 by bolts. Specifically, the base 1 is provided with a threaded hole, and the tail of the bolt passes through the waist-shaped hole 42 and connects with the threaded hole. In use, after the user loosens the bolt, the position of the support 4 can be adjusted so that the groove 41 can be aligned with any of the second positioning grooves 31. After adjusting the groove 41 to be aligned with the second positioning groove 31 to be used, the user can tighten the bolt, thereby pressing and fixing the support 4 onto the base 1.

[0029] In this embodiment, a scale line 13 is provided on the side wall edge of the base 1 along the sliding direction of the slider 3. The zero point of the scale line is aligned with the cutting surface 22. Thus, when the user slides the slider 3, they can know the position of the slider 3 by observing the alignment between the scale line 13 and the limiting surface 32, facilitating quick adjustment of the slider 3's position. Furthermore, a vertically arranged reference line 36 is provided on the side wall of the slider 3 corresponding to the limiting surface 32. The reference line 36 is aligned with the limiting surface 32, allowing the user to know the position of the slider 3 by observing the alignment between the reference line 36 and the scale line 13.

[0030] In addition, the cutting component 5 can move longitudinally under the action of the cylinder, thereby cutting the pull rope 10. Specifically, a connecting frame can be fixedly installed on one side of the base 1, the cylinder is installed on the top of the support frame, and the cutting component 5 is fixedly installed on the telescopic end of the cylinder.

[0031] The pull rope fixed-length cutting fixture of this utility model first moves the slider 3 according to the required length of the pull rope 10 to determine the distance between the cutting surface 22 and the limiting surface 32. Then, the pull rope 10 passes through the positioning groove on the positioning mold 2 and the slider 3, and the front end face of the spring tube 20 abuts against the limiting surface 32. At this time, the length of the pull rope 10 exposed outside the front end of the spring tube 20 is determined. The user can then cut the pull rope 10 by operating the cutting piece 5. Compared with the traditional fixed-length cutting method, this utility model is simple and convenient to operate, and greatly improves the processing efficiency.

[0032] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the scope of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A fixed-length cutting fixture for traction ropes, used for cutting traction ropes extending outside a spring tube, characterized in that: The device includes a base, a positioning mold and a support fixed on the base, a slider slidably disposed between the positioning mold and the support, and a cutting element slidably disposed above the positioning mold along the longitudinal direction. The top of the positioning mold has a first positioning groove, and the top of the slider has a second positioning groove corresponding to the first positioning groove. A cutting surface is formed on the side wall of the positioning mold away from the slider, and a limiting surface is formed on the side wall of the slider away from the positioning mold. The spring tube is placed on the support and its front end face abuts against the limiting surface. The front end of the pull rope passes through the second positioning groove and the second positioning groove in sequence.

2. The fixed-length cutting fixture for the pull rope as described in claim 1, characterized in that: A guide rod is fixedly connected to the base, and the slider is slidably sleeved on the outside of the guide rod.

3. The fixed-length cutting fixture for the pull rope as described in claim 2, characterized in that: The top of the base protrudes upward to form a fixing block. The positioning mold and the slider are located on opposite sides of the fixing block. The positioning groove is fixedly connected to the fixing block, and the guide rod is fixedly connected to the fixing block.

4. The fixed-length cutting fixture for the pull rope as described in claim 3, characterized in that: A fixing hole is provided on the surface of the fixing block near the slider. One end of the guide rod is inserted into the fixing hole. A fixing bolt is installed on the top of the fixing block. The tail of the fixing bolt extends into the fixing hole and abuts against the outer wall of the guide rod.

5. The fixed-length cutting fixture for the pull rope as described in claim 2, characterized in that: The slider has a through hole, and the slider is sleeved on the outside of the guide rod through the through hole. A locking bolt is installed on the top of the slider, and the tail of the locking bolt extends into the through hole and abuts against the outer wall of the guide rod.

6. The fixed-length cutting fixture for the pull rope as described in claim 1, characterized in that: The upper surface edge of the slider away from the positioning mold is recessed longitudinally downward to form a notch. The limiting surface is formed by the side wall of the notch, and the bottom wall of the notch forms a support surface. The bottom of the front end of the spring tube is placed on the support surface.

7. The fixed-length cutting fixture for the pull rope as described in claim 1, characterized in that: The first positioning groove is provided in multiple ways along the direction perpendicular to the sliding of the slider, and the second positioning groove is provided in multiple ways, with each first positioning groove corresponding to the first positioning groove. The upper surface of the support is provided with a groove along the sliding direction of the slider, and the support is movable in a direction perpendicular to the sliding of the slider so that the groove is aligned with any one of the second positioning grooves.

8. The fixed-length cutting fixture for the pull rope as described in claim 7, characterized in that: The support has a waist-shaped hole, and the waist-shaped hole is fixedly connected to the base by bolts.

9. The fixed-length cutting fixture for the pull rope as described in claim 1, characterized in that: The base has scale lines along the sliding direction of the slider on the side wall edge, and the zero point of the scale lines is aligned with the cutting surface.

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