A cable single-core wire terminal machine structure

Abstract

The utility model belongs to the technical field of core wire pressure terminal, especially line cable single core wire wears terminal machine structure, including base, wire clamp, positioning clamp, first mobile mechanism, second mobile mechanism, material belt conveying mechanism, cutting mechanism and clamping assembly mechanism, be equipped with support seat on the base, wire clamp is located on the base, and wire clamp is equipped with first clamping part, first mobile mechanism is located on the base, and first mobile mechanism includes first mobile seat, and first mobile seat is located close to or away from the connecting end of wire clamp, and positioning clamp is located on the connecting end, and positioning clamp includes two clamping blocks, and the opposite side of two clamping blocks is equipped with semicircle through hole and semicircle step hole, second mobile mechanism is located on first mobile seat, and second mobile mechanism includes second mobile seat, material belt conveying mechanism is located on support seat, and material belt conveying mechanism includes conveying channel, cutting mechanism is located on the output end of conveying channel, clamping assembly mechanism is located on second mobile seat, and clamping assembly mechanism includes second clamping part.

Description

Technical Field

[0001] This utility model belongs to the field of cable terminal insertion technology, and in particular relates to a structure for a single-core cable terminal insertion machine. Background Technology

[0002] Riveted terminals or connectors are placed at the ends of the core wires of a cable to facilitate subsequent connections or assembly of the cable, such as coaxial cables.

[0003] Taking coaxial cable as an example, when combining cable and connector, the connector needs to be cut from the tape and then assembled and crimped with the cable. Chinese patent document CN211238778U discloses an automated coaxial cable harness production line, which includes a synchronous circulating wire feeding mechanism, a wire feeding station, a stripping station, a sheathing station, a terminal crimping machine, an upper and lower brush braiding station, a left and right rotating braiding station, a braiding finishing station, an aluminum foil and wire core stripping station, a wire core cutting station, a CCD inspection station, a terminal crimping station, a terminal straightening station, a brush braiding finishing station, a wire stretching station, an RG external connection crimping station, a wire unloading station, a wire unloading station, and a work panel. One side of the synchronous circulating wire feeding mechanism is mounted on the work panel, and the other side is connected to the stripping station. The wire stripping machine, sheathing station, and terminal crimping machine are connected. The terminal crimping machine is located below the work panel. The upper and lower brush braiding station is connected to the left and right rotating braiding station. The braiding station is connected to the aluminum foil stripping and wire core stripping station via a synchronous circulating wire feeding mechanism. The synchronous circulating wire feeding mechanism has a wire core cutting station. The CCD detection station is located below the work panel. The terminal crimping station is located on the work panel. The straightening terminal station is connected to the braiding station. The wire stretching station and the RG external connection station are located on the synchronous circulating wire feeding mechanism. The wire unloading station is connected to the work panel below. The wire unloading station is located on the synchronous feeding mechanism.

[0004] The terminal crimping station consists of a depth positioner, upper and lower movable slide rails, a terminal clamping cylinder, a synchronous pressing rod, a terminal crimping machine body, a crimping die, a terminal motor, and a height positioner. The depth and height positioners are mounted on the terminal clamping cylinder. An upper and lower movable slide rail is located on one side of the terminal clamping cylinder, and the other side of the slide rail is mounted on the terminal crimping machine body. The crimping die is located on the terminal machine body and is connected to the synchronous pressing rod. The terminal motor is located below the terminal machine body. In the terminal crimping station, the terminal clamping cylinder clamps the wire, the terminal motor drives it to move towards the set position on the terminal machine body, the terminal machine body performs the crimping action, and the synchronous pressing rod simultaneously presses down on the clamping cylinder, thus completing the terminal crimping process for the cable.

[0005] Because the connection between the connector and the core wire in the coaxial cable requires high precision, the terminal and the material strip are cut at the same time as the core wire is crimped. This can cause interference or other problems between the terminal cutting and crimping, resulting in misalignment of the terminal and other issues. This, in turn, affects the precision of the connection between the terminal and the core wire, leading to poor quality of the coaxial cable. Utility Model Content

[0006] The purpose of this invention is to provide a single-core cable terminal assembly machine structure, which solves the problem of poor assembly accuracy caused by the assembly of core wires and terminals in existing coaxial cables.

[0007] To achieve the above objectives, this utility model provides a single-core cable terminal crimping machine structure, including a base, a wire clamp, a positioning clamp, a first moving mechanism, a second moving mechanism, a material conveying mechanism, a cutting mechanism, and a clamping and assembly mechanism; the base is provided with a support seat; The wire clamp is disposed on the base and has a first clamping part for clamping the cable; the first moving mechanism is disposed on the base and includes a first moving seat, which is disposed near or away from the connecting end of the wire clamp; the positioning clamp is disposed on the connecting end and includes two clamping blocks, and each of the two clamping blocks has a semi-circular through hole and a semi-circular stepped hole on its opposite side. The second moving mechanism is disposed on the first moving base, and the second moving mechanism includes the second moving base; The material conveying mechanism is mounted on the support base and is used for conveying connector material. The material conveying mechanism includes a conveying channel. The cutting mechanism is located at the output end of the conveying channel and is used to cut off the connector-material connection part of the connector material. The clamping assembly mechanism is mounted on the second movable base and includes a second clamping part for clamping the cut-off connector and moving it between the two clamping blocks.

[0008] Furthermore, the clamping centers of the first clamping part, the second clamping part, and the two clamping blocks are at the same height, and the clamping center of the first clamping part and the clamping centers of the two clamping blocks are on the same straight line.

[0009] Furthermore, the cutting mechanism includes a knife holder, a moving knife, a fixed knife, and a driving member; the knife holder is connected to the support base, and a sliding groove is provided on one side of the knife holder. The moving knife is disposed in the sliding groove and connected to the driving member; a limiting groove is provided on the moving knife, and a moving knife cutting edge is formed on one side of the limiting groove. The fixed knife is disposed on one side of the knife holder and limits the moving knife in the limiting groove. The end of the fixed knife and the moving knife cutting edge form a cutting portion.

[0010] Furthermore, the material conveying mechanism is vertically arranged on one side of the support base for conveying the connector material tape downwards; the material conveying mechanism also includes a pushing mechanism, which is located on one side of the conveying channel and includes a pawl that moves up and down.

[0011] Furthermore, the clamping assembly mechanism also includes a positioning element, which is disposed on one side of the second clamping part and is used to position the end of the connector.

[0012] Furthermore, the clamping assembly mechanism also includes a pneumatic clamp, which has two jaws, and the clamping ends of the two jaws form the second clamping part; the positioning member is disposed at one end of the pneumatic clamp and is located between the two jaws.

[0013] Furthermore, the clamping assembly mechanism includes a rotary pneumatic clamp for clamping and cutting the connector rotation.

[0014] Furthermore, the single-core cable terminal block machine structure also includes a swing mechanism, which is mounted on the second movable seat, and the clamping assembly mechanism is mounted on the swing mechanism. The swing mechanism drives the clamping assembly mechanism to swing up and down.

[0015] Furthermore, the swinging mechanism includes a movable plate and a pushing cylinder; the second movable seat is provided with two connecting seats, the movable plate is rotatably connected to the connecting seats, the second movable seat is also provided with a mounting seat, the pushing cylinder is provided on the mounting seat, and the pushing cylinder is used to push the movable plate to swing; the clamping assembly mechanism is provided on the movable plate.

[0016] Furthermore, the clamping assembly mechanism is slidably mounted on the second movable seat, and an abutment is provided at one end of the clamping assembly mechanism away from the second clamping part. A pressure sensor is also provided on the second movable seat, and the abutment abuts against the pressure sensor.

[0017] The above-mentioned technical solutions in the single-core wire terminal block machine structure provided in this utility model embodiment have at least the following technical effects: This single-core cable conduit machine allows connector tape to be placed on a tape conveyor mechanism, with the self-positioned end of the connector tape extending from the output end of the conveyor channel. The cable to be assembled is clamped in the first clamping part of the wire clamp, with the end of the core wire facing the positioning clamp. The first and second moving mechanisms simultaneously drive the second clamping part of the clamping assembly mechanism to move to the output end of the conveyor channel and clamp the connector extending out of the conveyor channel. The cutting mechanism cuts the connector off the tape, and the second clamping part holds the cut connector. The second moving mechanism drives the second clamping part to move the connector between the two clamping blocks of the positioning clamp. The two clamping blocks hold the connector and position it in the positioning hole formed by the semi-circular stepped holes of the two clamping blocks. The first moving mechanism again drives the clamping assembly mechanism and the positioning clamp to move synchronously towards the wire clamp, so that the end of the core wire clamped on the wire clamp passes through the guide hole formed by the semi-circular through hole and enters the connector, realizing the assembly of the cable and the connector. After assembly, the cable can be conveyed to the next station for crimping, etc. Because the connector is cut from the tape before being assembled with the cable during coaxial cable assembly, the positional accuracy of the core wire and connector assembly can be distinguished, and this positional accuracy can be maintained during subsequent crimping. This solves the misalignment problem caused by mutual interference during simultaneous crimping and cutting of existing coaxial cables. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 The structural diagram of the single-core cable terminal block machine provided in this embodiment of the utility model is shown.

[0020] Figure 2 This is a structural diagram of the other side of the single-core cable terminal block machine provided in an embodiment of this utility model.

[0021] Figure 3 A structural diagram of the cutting mechanism of the single-core cable terminal passing machine provided in this embodiment of the utility model.

[0022] Figure 4 for Figure 3 A magnified view of a portion of the image.

[0023] Figure 5 This is a structural diagram of the connector tape conveying mechanism of the single-core wire terminal passing machine provided in this embodiment of the utility model.

[0024] Figure 6The structural diagram of the clamping and assembly mechanism of the single-core cable terminal passing machine provided in this embodiment of the utility model.

[0025] Figure 7 The structural diagram of the positioning clamp of the single-core cable terminal passing machine provided in this embodiment of the utility model.

[0026] Figure 8 The structural diagram of the clamping block of the single-core cable terminal passing machine provided in this embodiment of the utility model. Detailed Implementation

[0027] The embodiments of this utility model are described in detail below. Examples of the 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 intended to explain the embodiments of this utility model, and should not be construed as limiting the utility model.

[0028] In the description of the embodiments of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the embodiments of 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.

[0029] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of embodiments of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0030] In this embodiment of the invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment of the invention according to the specific circumstances.

[0031] In one embodiment of the single-core wire conduit machine of this utility model, please refer to... Figure 1 and Figure 2The single-core cable terminal crimping machine of this embodiment includes a base 100, a wire clamp 200, a positioning clamp 300, a first moving mechanism 400, a second moving mechanism 500, a material conveying mechanism 600, a cutting mechanism 700, and a clamping and assembly mechanism 800.

[0032] Reference Figure 1 and Figure 2 The cable clamp 200 is mounted on the base 100 and has a first clamping part 201 for clamping cables. Specifically, the cable clamp 200 includes a connecting seat 210 and a cylinder parallel clamp 220 mounted on the connecting seat 210. The two jaws of the cylinder parallel clamp 220 form the first clamping part 201. When clamping a cable, the cable is placed between the two jaws, and the cylinder parallel clamp 220 drives the two jaws to clamp the cable.

[0033] Reference Figure 1 , Figure 2 , Figure 7 and Figure 8 The first moving mechanism 400 is mounted on the base 100. The first moving mechanism 400 includes a first moving seat 410, located near or away from the connecting end 411 of the wire clamp 200. A positioning clamp 300 is located at the connecting end 411. Preferably, the first moving mechanism 400 is an electric lead screw linear module. The positioning clamp 300 includes two clamping blocks 310 and a parallel clamp 320. The parallel clamp 320 is located at the connecting end 411, and the two clamping blocks 310 are connected to the parallel clamp 320. Each of the two clamping blocks 310 has a semi-circular through hole 311 and a semi-circular stepped hole 312 on opposite sides. When the two clamping blocks 310 clamp each other, the two semi-circular through holes 311 form guide through holes for guiding the core wire. The two semi-circular stepped holes 312 form positioning holes for clamping and positioning the connector.

[0034] The second moving mechanism 500 is disposed on the first moving base 400, and the second moving mechanism 500 includes a second moving base 510. Preferably, the second moving mechanism 500 is an electric lead screw linear module.

[0035] Reference Figure 1 , Figure 2 and Figure 5 A support base 110 is provided on the base 100, and a tape conveying mechanism 600 is disposed on the support base 110. The tape conveying mechanism 600 is used for conveying connector tape. Specifically, the tape conveying mechanism 600 includes a conveying channel 610 and a pushing mechanism 620. The conveying channel 610 is disposed on the support base 110, and the pushing mechanism 620 is disposed on one side of the conveying channel 610. The pushing mechanism 620 includes a vertically movable claw 621, which extends into the conveying channel 610 and pushes the tape to be conveyed. The pushing mechanism 620 is existing technology for terminal crimping machines and will not be described in detail in this embodiment.

[0036] The cutting mechanism 700 is located at the output end of the conveying channel 610 and is used to cut the connector-to-strip connection part of the connector tape. The clamping and assembly mechanism 800 is located on the second movable seat 510 and includes a second clamping part 801 for clamping the cut connector and moving it between the two clamping blocks 310.

[0037] In this embodiment of the single-core cable conduit machine, the connector tape can be disposed in the tape conveying mechanism 600, and the self-positioning end of the connector tape extends from the output end of the conveying channel 610. The cable to be assembled is clamped in the first clamping part 201 of the wire clamp 200, with the end of the core wire facing the positioning clamp 300; the first moving mechanism 400 and the second moving mechanism 500 simultaneously drive the second clamping part 801 of the clamping assembly mechanism 800 to move to the output end of the conveying channel 610, and clamp the connector extending out of the conveying channel 610. The cutting mechanism 700 cuts the connector from the material strip, and the second clamping part 801 holds the cut connector. The second moving mechanism 500 drives the second clamping part 801 to move the connector between the two clamping blocks 310 of the positioning clamp 300. The two clamping blocks 310 clamp the connector and position it in the positioning hole formed by the semi-circular stepped holes 312 of the two clamping blocks 310. The first moving mechanism 400 then drives the clamping assembly mechanism 800 and the positioning clamp 300 to move synchronously towards the wire clamp 200, so that the end of the core wire clamped on the wire clamp 200 passes through the guide hole formed by the semi-circular through hole 311 and enters the connector, realizing the assembly of the cable and the connector as one unit. After the assembly is completed, the cable can be transported to the next station for crimping, etc. Because the connector is cut from the material strip before being assembled with the cable during coaxial cable assembly, the positional accuracy of the core wire and the connector assembly can be distinguished, and the positional accuracy of both can still be maintained during subsequent crimping. This solves the problem of misalignment caused by mutual interference when the existing coaxial cable is simultaneously crimped and cut.

[0038] Preferably, refer to Figure 1 and Figure 2 The clamping centers of the first clamping part 201, the second clamping part 801, and the two clamping blocks 310 are at the same height, and the clamping center of the first clamping part 201 and the clamping centers of the two clamping blocks 310 are on the same straight line. Therefore, the positioning clamp 300 only needs to move back and forth.

[0039] Furthermore, refer to Figure 3 and Figure 4The cutting mechanism 700 includes a knife holder 710, a movable knife 720, a fixed knife 730, and a drive member 740. The knife holder 710 is connected to a support base 110. A groove 711 is provided on one side of the knife holder 710. The movable knife 720 is disposed in the groove 711 and connected to the drive member 740. A limiting groove 721 is provided on the movable knife 720. A moving knife cutting edge 722 is formed on one side of the limiting groove 721. The fixed knife 730 is disposed on one side of the knife holder 710 and limits the movable knife 720 within the limiting groove 721. The end of the fixed knife 730 and the moving knife cutting edge 722 form a cutting portion. In this embodiment, the free end of the connector tape passes into the limiting groove 721, and the connector extends out of the limiting groove 721. During cutting, the drive member 740 pulls the movable knife 720 to move, causing the movable knife 720 to cooperate with the fixed knife 730 to cut the portion of the tape connected to the connector. The main body of the conveyor belt remains within the limiting groove 721, ensuring stable and orderly conveying of the conveyor belt.

[0040] Furthermore, refer to Figure 1 , Figure 2 and Figure 5 The material conveyor mechanism 900 is vertically arranged on one side of the support base 110 and is used to convey the connector material tape downwards to facilitate the upward conveying of the material tape.

[0041] Furthermore, refer to Figure 6 The clamping assembly mechanism 800 also includes a positioning member 802, which is disposed on one side of the second clamping part 801 and is used to position the end of the connector. In this embodiment, when the clamping assembly mechanism 800 extends toward the connector, the positioning member 802 positions the end face of the connector, thereby ensuring the position of the second clamping part 801 clamping the connector, which facilitates the positioning of the connector within the positioning hole formed by the two semi-circular stepped holes 312.

[0042] Furthermore, refer to Figure 6 The clamping assembly mechanism 800 includes a pneumatic clamp 810, which has two jaws 820. The clamping ends of the two jaws 820 form a second clamping part 801. A positioning member 802 is provided at one end of the pneumatic clamp 810 and is located between the two jaws 820.

[0043] Furthermore, the pneumatic clamp 810 is a rotary pneumatic clamp used to clamp and rotate the cut connector. Therefore, after the connector is cut, the pneumatic clamp 810 clamps the connector and rotates it 90° to assemble it with the core wire.

[0044] Furthermore, the single-core cable conduit machine in this embodiment also includes a swing mechanism 900, as shown in the reference. Figure 1 and Figure 6The swing mechanism 900 is mounted on the second movable seat 510, and the clamping assembly mechanism 800 is mounted on the swing mechanism 900. The swing mechanism 900 drives the clamping assembly mechanism 800 to swing up and down. In this embodiment, when the cutting structure 700 completes the connector cutting, the swing mechanism 900 can drive the clamping assembly mechanism 800 to swing up and down, thereby completely separating the connector from the material strip and preventing the connector from remaining connected to the material strip or having any burrs left in the cutting mechanism 700.

[0045] Furthermore, refer to Figure 6 The swing mechanism 900 includes a movable plate 910 and a push cylinder 920. Two connecting seats 511 are provided on the second movable seat 510, and the movable plate 910 is rotatably connected to the connecting seats 511. A mounting seat 512 is also provided on the second movable seat 510, and the push cylinder 920 is mounted on the mounting seat 512. The push cylinder 920 is used to push the movable plate 910 to swing. A clamping assembly mechanism 800 is provided on the movable plate 910, which can be pushed to swing up and down.

[0046] Furthermore, refer to Figure 6 The clamping assembly mechanism 800 is slidably mounted on the second movable seat 510. Specifically, the clamping assembly mechanism 800 is slidably mounted on the movable plate 910. An abutment member 803 is provided at one end of the clamping assembly mechanism 800 away from the second clamping part 801. A pressure sensor 804 is also provided on the movable plate 910, and the abutment member 803 abuts against the pressure sensor 804. In this embodiment, when the second clamping part 802 extends towards the connector to clamp the connector to be cut, the pressure sensor 804 can detect the pressure change when the positioning member 802 contacts the connector, thereby determining whether the positioning member 802 is in contact with the connector. Furthermore, when assembling the connector and the core wire, after the core wire is inserted into the connector, the connector will be subjected to a force, which will react on the clamping assembly mechanism 800 and be detected by the pressure sensor 804, thereby accurately controlling the position of the core wire and connector assembly.

[0047] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A cable single-core wire terminal passing machine structure, characterized in that, It includes a base, a wire clamp, a positioning clamp, a first moving mechanism, a second moving mechanism, a material conveying mechanism, a cutting mechanism, and a clamping and assembly mechanism; the base is provided with a support seat; The wire clamp is disposed on the base and has a first clamping part for clamping the cable; the first moving mechanism is disposed on the base and includes a first moving seat, which is disposed near or away from the connecting end of the wire clamp; the positioning clamp is disposed on the connecting end and includes two clamping blocks, and each of the two clamping blocks has a semi-circular through hole and a semi-circular stepped hole on its opposite side. The second moving mechanism is disposed on the first moving base, and the second moving mechanism includes the second moving base; The material conveying mechanism is mounted on the support base and is used for conveying connector material. The material conveying mechanism includes a conveying channel. The cutting mechanism is located at the output end of the conveying channel and is used to cut off the connector-material connection part of the connector material. The clamping assembly mechanism is mounted on the second movable base and includes a second clamping part for clamping the cut-off connector and moving it between the two clamping blocks.

2. The cable single-core wire terminal passing machine structure according to claim 1, characterized in that: The clamping centers of the first clamping part, the second clamping part, and the two clamping blocks are at the same height, and the clamping center of the first clamping part and the clamping centers of the two clamping blocks are on the same straight line.

3. The cable single-core wire terminal passing machine structure according to claim 1, characterized in that: The cutting mechanism includes a knife holder, a moving knife, a fixed knife, and a driving member; the knife holder is connected to the support base, and a sliding groove is provided on one side of the knife holder. The moving knife is disposed in the sliding groove and connected to the driving member; a limiting groove is provided on the moving knife, and a moving knife cutting edge is formed on one side of the limiting groove. The fixed knife is disposed on one side of the knife holder and limits the moving knife in the limiting groove. The end of the fixed knife and the moving knife cutting edge form a cutting portion.

4. The cable single-core wire terminal passing machine structure according to any one of claims 1 to 3, characterized in that: The material conveying mechanism is vertically arranged on one side of the support base and is used to convey the connector material tape downwards; the material conveying mechanism also includes a pushing mechanism, which is located on one side of the conveying channel and includes a pawl that moves up and down.

5. The cable single-core wire terminal passing machine structure according to claim 1, characterized in that: The clamping assembly mechanism further includes a positioning element, which is disposed on one side of the second clamping part and is used to position the end of the connector.

6. The cable single-core wire terminal passing machine structure according to claim 5, characterized in that: The clamping assembly mechanism further includes a pneumatic clamp, which has two jaws, and the clamping ends of the two jaws form the second clamping part; the positioning member is disposed at one end of the pneumatic clamp and is located between the two jaws.

7. The cable single-core wire terminal passing machine structure according to any one of claims 1 to 3, 5, and 6, characterized in that: The clamping assembly mechanism includes a rotary pneumatic clamp for clamping and cutting the connector rotation.

8. The cable single-core wire terminal passing machine structure according to any one of claims 1 to 3, 5, and 6, characterized in that: It also includes a swing mechanism, which is disposed on the second movable seat, and the clamping assembly mechanism is disposed on the swing mechanism. The swing mechanism drives the clamping assembly mechanism to swing up and down.

9. The cable single-core wire terminal passing machine structure according to claim 8, characterized in that: The swinging mechanism includes a movable plate and a push cylinder; the second movable seat is provided with two connecting seats, the movable plate is rotatably connected to the connecting seats, the second movable seat is also provided with a mounting seat, the push cylinder is provided on the mounting seat, and the push cylinder is used to push the movable plate to swing; the clamping assembly mechanism is provided on the movable plate.

10. The cable single-core wire terminal passing machine structure according to any one of claims 1 to 3, 5, and 6, characterized in that: The clamping assembly mechanism is slidably mounted on the second movable seat. An abutment is provided at one end of the clamping assembly mechanism away from the second clamping part. A pressure sensor is also provided on the second movable seat. The abutment abuts against the pressure sensor.

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