A crimping tool

Abstract

This utility model discloses a crimping fixture, comprising a base and a crimping unit. The base has a first channel and a second channel extending horizontally, with openings above the first and second channels. The first and second channels are perpendicular to each other and connected. The crimping unit has a crimping end located above the base. The crimping end can slide and be positioned vertically towards or away from the base. A first pressing block is provided at the bottom of the crimping end. The projection of the first pressing block on the horizontal plane of the base lies within the projection of the connecting portion of the second and first channels on the same plane. This application, through a specific structural arrangement, ensures that after the crimping end is pressed down, the first pressing block always acts on the electrode block in a fixed position and manner, causing the electrode block to deform and clamp the conductive core wire at the through hole, thereby improving the connection stability and production standardization of the electrode block and the conductive core wire.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a crimping tool. Background Technology

[0002] In the field of medical devices, electrode blocks and conductive wires are installed in the devices to provide electrical conductivity. Currently, the connection between the electrode blocks and conductive wires mainly relies on manual clamping with pliers. First, the conductive wire is passed through the electrode block, and then the pliers are used to squeeze the electrode block, deforming it to compress the conductive wire. However, the standard of manual clamping is poor, which is not conducive to the standardization of conductive wire manufacturing. Utility Model Content

[0003] The purpose of this utility model is to provide a crimping tool to solve one or more technical problems existing in the prior art, and at least provide a beneficial option or create conditions.

[0004] The solution to the technical problem of this utility model is:

[0005] A crimping tool, comprising:

[0006] The base has a first channel and a second channel extending horizontally, with openings above the first channel and the second channel, and the first channel and the second channel are perpendicular to each other and connected.

[0007] A pressing unit has a pressing end located above the base. The pressing end can slide and be positioned in the vertical direction toward or away from the base. A first pressing block is provided at the bottom of the pressing end. The projection of the first pressing block on the horizontal plane of the base is located within the projection of the connecting portion of the second channel and the first channel on the same plane.

[0008] This technical solution has at least the following beneficial effects: a conductive core wire is placed on the first channel, and an electrode block is placed on the second channel. The conductive core wire passes through the through hole on the electrode block. When the pressing end moves downward, the first pressing block can press against the electrode block. The first pressing block continues to press down to squeeze the electrode block, causing the electrode block to deform and clamp the conductive core wire at the through hole. By using the crimping tooling in this application, through a specific structural setting, after the pressing end is pressed down, the first pressing block always acts on the electrode block in a fixed position and manner, so that the process of the electrode block deforming and clamping the conductive core wire at the through hole can be repeated and standardized. This ensures that the connection position and pressing force of the electrode block and the conductive core wire can be kept consistent each time, improving the standardization level of conductive core wire manufacturing. Compared with the method of manually adjusting the clamping multiple times with pliers, it greatly reduces the operation time and significantly improves the production efficiency.

[0009] As a further improvement to the above technical solution, with the length direction of the first channel as the first direction, the pressing unit includes a second pressing block, and the first pressing block and the second pressing block are arranged along the first direction.

[0010] The conductive core wire consists of an inner core and an outer steel tube. The inner core is placed in the steel tube and then inserted into the electrode block. When the pressing end moves down, the second pressing block simultaneously abuts against the steel tube. The pressing end continues to press down, squeezing the steel tube to fix the inner core inside the steel tube, thus completing the synchronous pressing of the inner core, steel tube, and electrode block. Through this design, the pressing fixture of this application can complete the synchronous pressing of the inner core and steel tube, as well as the steel tube and electrode block, in one pressing operation. Compared with the traditional step-by-step operation of fixing the inner core to the steel tube and the steel tube to the electrode block separately, it greatly reduces the operation steps and production time. The worker only needs to place the inner core in the steel tube and insert the electrode block together, and then perform one pressing operation through the fixture to complete all connection processes, which significantly improves production efficiency.

[0011] As a further improvement to the above technical solution, the projection of the second pressing block on the horizontal plane and the projection of the second channel on the same plane do not overlap.

[0012] With the above technical solution, when the pressing end moves down, the second pressing block can accurately abut against the steel pipe without any obstruction, and the first pressing block can also act smoothly on the electrode block, effectively avoiding the possibility of collision or interference between the second pressing block and the electrode block during the pressing process.

[0013] As a further improvement to the above technical solution, multiple second pressing blocks are arranged at intervals along the first direction, and each of the multiple second pressing blocks is located on one side of the first pressing block along the first direction.

[0014] By adopting the above technical solution, each second pressing block can form an independent deformation node on the steel pipe during the pressing process. These deformation nodes work together to significantly increase the contact area between the steel pipe and the internal core wire, and produce a multi-segment tight wrapping effect. Compared with only a single second pressing block, the multiple deformation nodes formed by multiple pressing blocks greatly enhance the fixing strength of the steel pipe to the internal core wire, forming a more robust connection between the core wire and the steel pipe, which helps to ensure stable current transmission in the conductive core wire.

[0015] As a further improvement to the above technical solution, a top block is provided at the bottom of the first channel, and the projections of the top block and the second pressure block on the horizontal plane coincide with each other.

[0016] By adopting the above technical solution, the top block and the second pressure block cooperate to compress the steel pipe from both above and below, allowing the steel pipe to more tightly wrap the internal core wire. This significantly enhances the fixing effect of the steel pipe on the core wire, effectively preventing the core wire from loosening or shifting inside the steel pipe. At the same time, compressing the steel pipe from both above and below ensures that the steel pipe is subjected to more uniform force during deformation. During the pressing process, the second pressure block applies pressure from top to bottom, while the top block provides a counterforce from bottom to top. Under the action of this pair of balanced forces, the circumferential deformation of the steel pipe is more consistent. Compared with the situation where one side of the steel pipe is over-deformed and the other side is under-deformed due to unidirectional extrusion, bidirectional extrusion ensures that the deformation degree of each part of the steel pipe is similar, making the wrapping of the core wire more uniform and further improving the fixing quality and product reliability.

[0017] As a further improvement to the above technical solution, the base includes a base and a sliding seat, the pressing unit is mounted on the base, the sliding seat is able to slide and be positioned on the base along a first direction, and both the first channel and the second channel are disposed on the sliding seat.

[0018] By adopting the above technical solution, operators can easily adjust the position of the sliding seat according to actual production needs, so that the pressing end is accurately aligned with different positions on the first channel. For example, when it is necessary to press different parts of the conductive core wire, or to process conductive core wires of different lengths, the pressing position can be quickly switched by simply moving the sliding seat. There is no need for complicated readjustment or tooling replacement, which greatly improves the convenience and efficiency of operation.

[0019] As a further improvement to the above technical solution, the pressing unit includes a mounting frame and a pressing rod. The mounting frame can slide and be positioned on the base in the vertical direction, and the pressing rod can move and be positioned on the mounting frame in the vertical direction. The pressing end is the downward-facing end of the pressing rod.

[0020] By changing the height of the mounting bracket on the base, the original height of the pressure bar relative to the base is changed, which allows the crimping fixture to easily handle combinations of electrode blocks and conductive core wires of different thicknesses or sizes.

[0021] As a further improvement to the above technical solution, a gear is rotatably mounted on the mounting bracket, and multiple tooth blocks are arranged along the vertical direction on the pressure rod. The gear can mesh with the tooth blocks, and the mounting bracket is provided with an operating component for driving the gear to rotate.

[0022] An operating mechanism is installed on the mounting bracket to drive the gear to rotate, which in turn drives the gear teeth that mesh with the gear, thus moving the pressure rod up and down. This design transforms the traditional method of directly pushing the pressure rod manually into an indirect method of driving the gear through the operating mechanism. Because gear transmission has the characteristic of saving effort, the operator only needs to apply a small force to the operating mechanism to easily raise and lower the pressure rod, greatly reducing labor intensity.

[0023] As a further improvement to the above technical solution, an elastic element is provided at the upward end of the pressure rod. The end of the elastic element away from the pressure rod extends upward and is connected to the mounting bracket. When the elastic element is in its natural state, the elastic element drives the pressure rod to move upward.

[0024] During the operation of the crimping fixture, the pressure rod needs to be reset after each crimping operation in order to perform the next crimping operation. By setting up an elastic element, when the rotating gear drives the pressure rod to move through the tooth block, the drive of the gear is released. At this time, under the influence of the elastic element, the pressure rod moves upward to reset. This process does not require the operator to rotate the gear again to drive the pressure rod to reset, which greatly saves operation time.

[0025] As a further improvement to the above technical solution, a limiting member is provided at the upward end of the pressure rod, and the pressure rod can be moved until the downward end of the limiting member abuts against the mounting bracket.

[0026] The presence of the limiting component ensures that the pressure bar does not move down excessively, avoiding excessive compression of the conductive core wire by the crimping end. When the pressure bar moves the pressing end down to the predetermined maximum range, the limiting component promptly abuts against the mounting bracket, preventing the pressure bar from continuing to move down. This effectively prevents damage such as deformation and breakage of the conductive core wire due to excessive compression, ensuring the electrical performance and structural integrity of the conductive core wire, improving the product qualification rate, and reducing the generation of scrap. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly explained below. Obviously, the described drawings are only a part of the embodiments of this utility model, and not all of them. Those skilled in the art can obtain other design schemes and drawings based on these drawings without creative effort.

[0028] Figure 1 This is a schematic diagram of the overall structure of the crimping tool of this utility model;

[0029] Figure 2 This is a schematic diagram of the overall structure of the pressing tool sliding seat of this utility model;

[0030] Figure 3This is a schematic diagram of the overall structure of the first and second pressing blocks on the pressing end of the crimping tool of this utility model;

[0031] Figure 4 This is a side view of the crimping fixture of this utility model;

[0032] Figure 5 The pressing end and sliding seat edge of this utility model Figure 4 A cross-sectional view from the perspective of the middle AA (analogous to ...

[0033] Figure 6 This is a sectional view of the crimping fixture of this utility model from a side view perspective. Attached Figure Description

[0035] 1. Base; 11. Base; 12. Sliding seat; 13. First channel; 131. Top block; 14. Second channel; 15. Side guard; 2. Pressing unit; 21. Mounting bracket; 22. Pressing rod; 221. Pressing end; 23. First pressing block; 24. Second pressing block; 25. Limiting block; 26. Mounting rod; 27. Gear; 28. Operating component; 29. ​​Elastic component; 3. Limiting component; 4. Horizontal mounting plate; 5. Electrode block; 6. Conductive core wire. Detailed Implementation

[0036] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0037] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They 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. Therefore, they should not be construed as limitations on this utility model.

[0038] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0039] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0040] Reference Figures 1 to 3 The present application provides a crimping tool, which includes a base 1 and a crimping unit 2, wherein the base 1 has a first channel 13 and a second channel 14 extending in the horizontal direction, the first channel 13 and the second channel 14 have openings above them, and the first channel 13 and the second channel 14 are perpendicular to each other and connected.

[0041] The pressing unit 2 has a pressing end 221, which is located above the base 1. The pressing end 221 can slide and be positioned in the vertical direction toward or away from the base 1. A first pressing block 23 is provided at the bottom of the pressing end 221. The projection of the first pressing block 23 on the horizontal plane of the base 1 is located in the projection of the connecting part of the second channel 14 and the first channel 13 on the same plane.

[0042] As described above, a conductive core wire 6 is placed on the first channel 13, and an electrode block 5 is placed on the second channel 14. At this time, the conductive core wire 6 passes through the through hole on the electrode block 5. When the pressing end 221 moves downward, the first pressing block 23 can abut against the electrode block 5. The first pressing block 23 continues to press down to squeeze the electrode block 5, so that the electrode block 5 deforms and clamps the conductive core wire 6 at the through hole. Using the crimping tool in this application, through a specific structural setting, after the pressing end 221 presses down, the first pressing block 23 always acts on the electrode block 5 in a fixed position and manner, so that the process of the electrode block 5 deforming and clamping the conductive core wire 6 at the through hole can be repeated and standardized. This ensures that the connection position and pressing force of the electrode block 5 and the conductive core wire 6 can be kept consistent each time, which improves the standardization level of the manufacturing of the conductive core wire 6. Compared with the manual clamping method of adjusting the clamping multiple times, it greatly reduces the operation time and significantly improves the production efficiency.

[0043] Reference Figure 1 and Figure 2 The base 1 includes a base 11 and a sliding seat 12. The pressing unit 2 is installed on the base 11. The sliding seat 12 can slide and be positioned above the base 11 along a first direction. The first channel 13 and the second channel 14 are both provided on the sliding seat 12. A baffle 15 is provided at one end of the base 11 along the first direction. The baffle 15 can block the conductive core wire 6.

[0044] Specifically, the base 11 has a threaded hole, and the sliding seat 12 has two sliding elongated holes extending along the first direction. A connecting bolt is rotatably installed in the sliding elongated hole. One end of the connecting bolt passes through the sliding elongated hole and extends downward and is threadedly connected to the threaded hole.

[0045] Reference Figure 1 The pressing unit 2 includes a mounting frame 21 and a pressing rod 22. The mounting frame 21 can slide and be positioned on the base 11 in the vertical direction. The pressing rod 22 can move and be positioned on the mounting frame 21 in the vertical direction. The pressing end 221 is the downward end of the pressing rod 22. Specifically, the base 11 is provided with a mounting rod 26, which extends in the vertical direction. The mounting frame 21 is mounted on the mounting rod 26. The mounting frame 21 is provided with two clamping parts, and a clamping gap is formed between the two clamping parts. The mounting rod 26 is inserted into the clamping gap. A clamping bolt is provided between the two clamping parts. After the mounting frame 21 is moved to a suitable position on the mounting rod 26, the clamping bolt is tightened to fix the mounting frame 21 on the clamping rod.

[0046] Reference Figure 3 , Figure 4 and Figure 5 With the length direction of the first channel 13 as the first direction, the pressing unit 2 includes a second pressing block 24. The first pressing block 23 and the second pressing block 24 are arranged along the first direction. The projection of the second pressing block 24 on the horizontal plane does not overlap with the projection of the second channel 14 on the same plane.

[0047] As described above, the conductive core wire 6 includes an inner core and an outer steel tube. The inner core is placed in the steel tube and then inserted into the electrode block 5. When the pressing end 221 moves down, the second pressing block 24 simultaneously abuts against the steel tube. The pressing end 221 continues to press down, squeezing the steel tube to fix the inner core inside the steel tube, thus completing the synchronous pressing of the inner core, steel tube, and electrode block 5. Through this design, the pressing fixture of this application can complete the synchronous pressing of the inner core and steel tube and the steel tube and electrode block 5 in one pressing operation. Compared with the traditional step-by-step operation of fixing the inner core and steel tube separately and fixing the steel tube and electrode block 5 separately, the operation steps and production time are greatly reduced. The worker only needs to place the inner core in the steel tube and insert it into the electrode block 5 together, and then perform one pressing operation through the fixture to complete all connection processes.

[0048] Reference Figure 5 The bottom of the first pressing block 23 is at a higher height than the bottom of the second pressing block 24. This arrangement ensures that when the second pressing block 24 presses the smaller diameter steel pipe and core wire, the first pressing block 23 simultaneously presses the electrode block 5, the steel pipe, and the core wire. When the first pressing block 23 moves downward, it prevents the second pressing block 24 from moving too far to contact the smaller diameter conductive core wire 6, which would cause excessive pressure on the electrode block 5 and damage it.

[0049] A limiting block 25 is provided on one side of the pressing end 221 corresponding to the retaining edge 15. The bottom height of the limiting block 25 is less than the bottom height of the second pressing block 24, so that the limiting block 25 can abut against the sliding seat 12 as early as possible, preventing the second pressing block 24 from excessively squeezing the steel pipe and inner core after the pressing end 221 moves, causing damage.

[0050] As a further embodiment, multiple second pressing blocks 24 are arranged at intervals along the first direction. Each of the multiple second pressing blocks 24 is located on one side of the first pressing block 23 along the first direction. Specifically, each second pressing block 24 is located between the first pressing block 23 and the limiting block 25. At this time, the second pressing blocks 24 can press the end of the conductive core wire 6 that passes through the electrode block 5 and faces the baffle 15. Since the end of the conductive core wire 6 that is far from the baffle 15 is longer, it can be used for normal use to conduct electricity. After the shorter end is squeezed and connected, the negative impact on the normal operation of the conductive core wire 6 is reduced.

[0051] As can be seen from the above, during the pressing process, each second pressing block 24 can form an independent deformation node on the steel pipe. These deformation nodes work together to greatly increase the contact area between the steel pipe and the internal core wire, and produce a multi-segment tight wrapping effect. Compared with only a single second pressing block 24, the multiple deformation nodes formed by multiple pressing blocks greatly enhance the fixing strength of the steel pipe to the internal core wire, forming a more solid connection between the core wire and the steel pipe.

[0052] As a further implementation method, refer to Figure 5 The bottom of the first channel 13 is provided with a top block 131 corresponding to the second pressure block 24. The projections of the top block 131 and the corresponding second pressure block 24 on the horizontal plane coincide. The top block 131 and the second pressure block 24 cooperate with each other to squeeze the steel pipe from both the top and bottom directions, which can make the steel pipe more uniformly stressed during the deformation process. During the pressing process, the second pressure block 24 applies pressure from top to bottom, and the top block 131 provides a reverse force from bottom to top. Under the action of this pair of balanced forces, the circumferential deformation of the steel pipe is more consistent. Compared with the situation where one side of the steel pipe is over-deformed and the other side is under-deformed due to unidirectional extrusion, this is a significant improvement.

[0053] As a further implementation method, refer to Figure 4 and Figure 6 The mounting frame 21 has a mounting cavity, in which a gear 27 is rotatably mounted. A pressure rod 22 is mounted in the mounting cavity and can move and be positioned in the vertical direction. Multiple tooth blocks are arranged on the pressure rod 22 in the vertical direction, and the gear 27 can mesh with the tooth blocks. An operating component 28 for driving the gear 27 to rotate is provided on the mounting frame 21.

[0054] In this embodiment, the operating component 28 is a handle. The handle is rotatably mounted outside the mounting bracket 21 and coaxially mounted with the gear 27. When the handle is rotated, the gear 27 can be directly driven to rotate.

[0055] In other embodiments, the operating element 28 is a drive motor, which is mounted outside the mounting bracket 21 and coaxially with the gear 27. The gear 27 is precisely driven to rotate by electric drive, thereby precisely controlling the movement of the pressure rod 22 and realizing stable crimping of the electrode block 5 and the wire core.

[0056] During the operation of the crimping fixture, the pressure rod 22 needs to be reset after each crimping operation in order to perform the next crimping operation. Therefore, refer to Figure 1 An elastic element 29 is provided at the upward end of the pressure rod 22. The end of the elastic element 29 away from the pressure rod 22 extends upward and is connected to the mounting bracket 21. When the elastic element 29 is in its natural state, the elastic element 29 drives the pressure rod 22 to move upward.

[0057] Specifically, the mounting bracket 21 is provided with a first limiting rod extending upwards, and a second limiting rod extending horizontally is provided at the upward end of the first limiting rod. The pressure rod 22 extends out of the mounting bracket 21 at one end and is provided with a horizontal mounting plate 4. The horizontal mounting plate 4 extends parallel to the horizontal plane. One end of the elastic element 29 is connected to the end of the second limiting rod away from the first limiting rod, and the other end extends downwards and is connected to the horizontal mounting plate 4. By providing the elastic element 29, when the rotating gear 27 drives the pressure rod 22 to move through the tooth block, the drive on the gear 27 is released. At this time, under the trend of the elastic element 29, the pressure rod 22 moves upwards to reset. This process does not require the operator to rotate the gear 27 again to drive the pressure rod 22 to reset, which greatly saves operation time.

[0058] As a further embodiment, a limiting member 3 is provided at the upward end of the pressure rod 22, and the pressure rod 22 can be moved until the downward end of the limiting member 3 abuts against the mounting bracket 21.

[0059] Specifically, the limiting component 3 is a limiting bolt, which is threaded onto the horizontal mounting plate 4 and extends downwards. When the pressure rod 22 moves, the limiting bolt can be driven to move synchronously through the horizontal mounting plate 4. The presence of the limiting component 3 ensures that the pressure rod 22 will not move downwards excessively, avoiding excessive compression of the conductive core wire 6 by the pressing end. When the pressure rod 22 drives the pressing end 221 to move downwards to the predetermined maximum range, the limiting component 3 promptly abuts against the mounting frame 21, preventing the pressure rod 22 from continuing to move downwards. This effectively prevents damage such as deformation and breakage of the conductive core wire 6 due to excessive compression. At the same time, the limiting bolt can move on the horizontal mounting plate 4, thereby adjusting the limiting length of the pressure rod 22.

[0060] The preferred embodiments of the present invention have been described in detail above, but the present invention is not limited to the described embodiments. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention, and these equivalent modifications or substitutions are all included within the scope defined by the claims of this application.

Claims

1. A crimping tool, characterized in that, include: The base (1) has a first channel (13) and a second channel (14) extending in the horizontal direction. The first channel (13) and the second channel (14) are open above each other. The first channel (13) and the second channel (14) are perpendicular to each other and connected. The pressing unit (2) has a pressing end (221) located above the base (1). The pressing end (221) can slide and be positioned in the vertical direction toward or away from the base (1). A first pressing block (23) is provided at the bottom of the pressing end (221). The projection of the first pressing block (23) on the horizontal plane of the base (1) is located within the projection of the connecting part of the second channel (14) and the first channel (13) on the same plane.

2. The crimping fixture according to claim 1, characterized in that, With the length direction of the first channel (13) as the first direction, the pressing unit (2) includes a second pressing block (24), and the first pressing block (23) and the second pressing block (24) are arranged along the first direction.

3. The crimping fixture according to claim 2, characterized in that, The projection of the second pressure block (24) on the horizontal plane does not overlap with the projection of the second channel (14) on the same plane.

4. The crimping fixture according to claim 2, characterized in that, Multiple second pressure blocks (24) are arranged at intervals along the first direction, and each of the multiple second pressure blocks (24) is located on one side of the first pressure block (23) along the first direction.

5. A crimping fixture according to claim 2, characterized in that, The bottom of the first channel (13) is provided with a top block (131), and the projections of the top block (131) and the second pressure block (24) on the horizontal plane coincide with each other.

6. A crimping fixture according to claim 2, characterized in that, The base (1) includes a base (11) and a sliding seat (12). The pressing unit (2) is installed on the base (11). The sliding seat (12) can slide and be positioned on the base (11) along a first direction. The first channel (13) and the second channel (14) are both provided on the sliding seat (12).

7. A crimping fixture according to claim 6, characterized in that, The pressing unit (2) includes a mounting frame (21) and a pressing rod (22). The mounting frame (21) can slide and be positioned on the base (11) in the vertical direction. The pressing rod (22) can move and be positioned on the mounting frame (21) in the vertical direction. The pressing end (221) is the end of the pressing rod (22) facing downward.

8. A crimping fixture according to claim 7, characterized in that, A gear (27) is rotatably mounted on the mounting bracket (21), and multiple tooth blocks are arranged on the pressure rod (22) in the vertical direction. The gear (27) can mesh with the tooth blocks. An operating component (28) for driving the gear (27) to rotate is provided on the mounting bracket (21).

9. A crimping fixture according to claim 8, characterized in that, The pressure rod (22) is provided with an elastic element (29) at its upward end. The end of the elastic element (29) away from the pressure rod (22) extends upward and is connected to the mounting bracket (21). When the elastic element (29) is in its natural state, the elastic element (29) drives the pressure rod (22) to move upward.

10. A crimping fixture according to claim 8, characterized in that, The pressure rod (22) is provided with a limiting member (3) at its upward end, and the pressure rod (22) can move until the lower end of the limiting member (3) abuts against the mounting bracket (21).

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