Wire stripping equipment adaptable to various sizes

Abstract

The invention discloses wire stripping equipment capable of adapting to various sizes, which comprises wire stripping equipment, a wire stripping assembly is arranged on the wire stripping equipment, a wire stripping hole is formed in the middle of the wire stripping assembly, and a plurality of movable guide wheel assemblies for clamping wires are arranged around the wire stripping hole. The wire stripping assembly is provided with a synchronous connecting rod assembly which is used for controlling the multiple movable guide wheel assemblies and the multiple movable adjusting tool rests to be away from or close to the center of the wire stripping hole at the same time. According to the thickness of the insulating layer, the positions of the multiple cutters can be finely adjusted through the synchronous fine adjustment assembly, and it is guaranteed that the cutters cover and cut the thickness of the insulating layer; the whole adjustment and fine adjustment of the plurality of cutters and the adjustment of the plurality of auxiliary wheels are completed through the synchronous adjustment structure, the consistency of the adjustment distance and the convenience of the adjustment are ensured, the peeling machine is adaptive to the electric wires of the models and sizes for peeling processing, more processing requirements are met, and the processing efficiency is improved.

Description

Technical Field

[0001] The invention relates to a wire stripping device, in particular to a wire stripping device which can be adapted to various sizes. Background Art

[0002] Wire stripping equipment is a machine used to strip the plastic sheath and metal core of the outer wrapping of wires, etc., and can recycle the internal metal material. Wire stripping equipment is widely used in the electronics industry, auto parts industry, electrical appliances, motors and other industries. The existing stripping process is to cut a knife on the surface of the insulation layer, and then take out the internal metal material and the internal wire. Since the insulation layer is elastic, it is still wrapped after cutting, which is not convenient for taking out the internal metal material. In addition, due to the different types of wires, the wire diameters are different, and the thickness of the insulation layer is also different, resulting in the need to replace or adjust the cutter structure and distance. In view of the above problems, it is necessary to design a structure that can solve the above problems and is suitable for stripping wires of various models.

[0003] Therefore, the existing wire stripping equipment needs to be further improved. Summary of the invention

[0004] The purpose of the present invention is to provide a wire stripping device that can adapt to various sizes of wires. It can synchronously adjust multiple cutters according to the model, thickness, insulation layer thickness and other dimensions of the wires, and can also adjust the space size between multiple auxiliary pulleys to adapt to more sizes of wires for processing.

[0005] In order to achieve the above object, the present invention adopts the following scheme:

[0006] A wire stripping device that can adapt to various sizes includes a wire stripping device, wherein the wire stripping device is provided with a wire stripping assembly, a wire stripping hole is provided in the middle of the wire stripping assembly, a plurality of movable guide wheel assemblies for clamping the wire are provided around the wire stripping hole, a plurality of movable adjustable tool holders for cutting the insulating layer of the wire are provided around the wire stripping hole, a synchronous connecting rod assembly is provided on the wire stripping assembly for controlling a plurality of the movable guide wheel assemblies and a plurality of the movable adjustable tool holders to simultaneously move away from or approach the center of the wire stripping hole, a worm and worm gear adjustment assembly is provided on the wire stripping assembly for controlling the synchronous connecting rod assembly, a cutter body is movably provided in the movable adjustable tool holder, the cutter body moves radially toward the center of the wire stripping hole, an axial push-pull connecting rod assembly for controlling the radial distance movement of the cutter body is provided on the movable adjustable tool holder, and a synchronous fine-tuning assembly for controlling the movement of a plurality of the cutter bodies relative to a corresponding one of the movable guide wheel assemblies is provided on the wire stripping assembly.

[0007] Furthermore, the wire stripping assembly includes a wire outlet arranged at the end of the wire stripping device, a plurality of support rods are arranged around the wire outlet, and a support ring is connected and fixed between the plurality of support rods.

[0008] Furthermore, a plurality of the movable guide wheel assemblies are evenly distributed around the central circumference of the wire stripping hole;

[0009] The movable guide wheel assembly comprises a linear guide groove arranged on the support ring, a linear slider is movably arranged in the linear guide groove, a wheel frame is arranged on the linear slider, and an auxiliary positioning wheel is arranged on the wheel frame.

[0010] Furthermore, the number of the movable adjustable knife holders is the same as the number of the movable guide wheel assemblies, and a plurality of the movable adjustable knife holders and a plurality of the movable guide wheel assemblies are staggered in a clockwise direction along the wire stripping hole.

[0011] Furthermore, the movable adjustable tool holder comprises an oblique guide groove arranged between two adjacent linear guide grooves, an oblique sliding block is movably arranged in the oblique guide groove, and a cutter mounting groove is arranged on the oblique sliding block.

[0012] Furthermore, the synchronous connecting rod assembly includes an annular guide groove arranged on the back side of the support ring, a rotating adjustment ring is rotatably installed in the annular guide groove, the number of the movable adjustment tool holders is four, the end surface of the rotating adjustment ring has eight first hinged parts evenly distributed around the center circumference of the rotating adjustment ring, the oblique slider and the linear slider are each provided with a second hinged part, and a synchronous connecting rod is hinged between the first hinged part and a corresponding one of the second hinged parts.

[0013] Furthermore, the worm and worm wheel adjustment assembly includes a worm mounting seat arranged on the back of the support ring, an adjusting worm is rotatably mounted on the worm mounting seat, an adjusting worm wheel is arranged on the circumferential outer wall of the rotating adjustment ring, and the adjusting worm and the adjusting worm wheel are meshed for transmission.

[0014] Furthermore, the axial push-pull connecting rod assembly includes an axial guide hole arranged at the outer end of the cutter mounting groove, an axial adjustment rod is movably arranged in the axial guide hole, a third hinge part is arranged on the axial adjustment rod, a fourth hinge part is arranged at the outer end of the cutter body, and a push-pull connecting rod is arranged between the third hinge part and the fourth hinge part.

[0015] Furthermore, the synchronous fine-tuning component includes a wire tube arranged on the wire stripping hole, a plurality of guide rod through holes are arranged on both sides of the inclined guide groove, guide rods are movably arranged in the guide rod through holes, a synchronous adjustment frame is arranged between the plurality of guide rods, a synchronous inclined groove is arranged on the synchronous adjustment frame, an annular groove is arranged on the circumferential outer wall of the outer end of the axial adjustment rod, the annular groove is movably installed in a corresponding one of the synchronous inclined grooves, the annular groove synchronously follows the axial movement of the synchronous inclined groove, and a synchronous axial adjustment structure for synchronously controlling the axial movement of the plurality of guide rods is arranged on the wire tube.

[0016] Further, the synchronous axial adjustment structure comprises an external thread arranged on the circumferential outer wall of the wire tube, an adjusting nut is threadedly connected to the external thread, an annular synchronous groove is arranged on the circumferential outer wall of the adjusting nut, a synchronous arc-shaped piece is arranged on the inner end of the guide rod, and the synchronous arc-shaped piece is fitted in the annular synchronous groove;

[0017] The plurality of synchronization arc-shaped members synchronously follow the axial movement of the annular synchronization groove.

[0018] In summary, the present invention has the following beneficial effects compared with the prior art:

[0019] The present invention solves the shortcomings of the existing wire stripping equipment. Through the structural setting of the present invention, it has the following advantages: a plurality of cutter structures designed around the circumference of the wire are provided, which can make multiple openings and cut the outer skin of the wire insulation layer, making it more convenient to remove the internal metal material; a plurality of auxiliary wheels are designed to clamp the outer surface of the wire to improve the centering stability and transportation stability during the wire stripping process; a plurality of cutters and a plurality of auxiliary wheels can realize synchronous opening and closing adjustment to meet the adjustment of more models, diameters, insulation layer thickness and other parameters, greatly improving the adaptability of the cutting process; after the synchronous adjustment of the cutter position is completed, the plurality of cutter positions can also be fine-tuned according to the thickness of the insulation layer through a synchronous fine-tuning component to ensure that the cutter completes the covering and cutting of the insulation layer thickness; the overall adjustment and fine-tuning of the plurality of cutters and the adjustment of the plurality of auxiliary wheels are completed through the synchronous adjustment structure to ensure the consistency of the adjustment distance and the convenience of the adjustment, and the stripping processing of wires of suitable models and sizes is carried out to meet more processing requirements and improve the processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a right side view of the present invention;

[0021] Figure 2 It is a schematic diagram of stripping a wire with a smaller diameter according to the present invention;

[0022] Figure 3 It is a schematic diagram of stripping a relatively large diameter electric wire of the present invention;

[0023] Figure 4 for Figure 3 Schematic diagram of cutting depth adjustment;

[0024] Figure 5 It is a left view of the wire stripping structure of the present invention;

[0025] Figure 6 It is a rear view of the wire stripping structure of the present invention;

[0026] Figure 7 It is one of the cross-sectional views of the present invention;

[0027] Figure 8 This is the second cross-sectional view of the present invention;

[0028] Fig. 9 The third cross-sectional view of the present invention

[0029] Fig.10 This is the fourth cross-sectional view of the present invention;

[0030] Fig.11 It is a stereogram of the present invention. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] See also Figure 1-Figure 11 The present invention provides a wire stripping device that can adapt to various sizes, including a wire stripping device 1, a wire stripping assembly 2 is arranged on the wire stripping device 1, a wire stripping hole 3 is arranged in the middle of the wire stripping assembly 2, a plurality of movable guide wheel assemblies 4 for clamping the wire are arranged around the wire stripping hole 3, a plurality of movable adjustment knife holders 5 for cutting the insulation layer of the wire are arranged around the wire stripping hole 3, and a synchronous device for controlling the plurality of movable guide wheel assemblies 4 and the plurality of movable adjustment knife holders 5 to move away from or close to the center of the wire stripping hole 3 at the same time is arranged on the wire stripping assembly 2. The step connecting rod assembly 6, the wire stripping assembly 2 is provided with a worm gear adjustment assembly 7 for controlling the synchronous connecting rod assembly 6, the movable adjustment tool holder 5 is provided with a cutter body 8, the cutter body 8 moves radially toward the center of the wire stripping hole 3, the movable adjustment tool holder 5 is provided with an axial push-pull connecting rod assembly 9 for controlling the radial distance movement of the cutter body 8, and the wire stripping assembly 2 is provided with a synchronous fine-tuning assembly 10 for controlling the movement of multiple cutter bodies 8 relative to a corresponding one of the movable guide wheel assemblies 4;

[0033] Adjust the positions of the plurality of movable guide wheel assemblies 4, the plurality of movable adjustment knife holders 5 and the plurality of cutter bodies 8 according to the outer diameter of the wire and the thickness of the insulation layer;

[0034] According to the outer diameter of the wire: control the synchronous connecting rod assembly 6 to make the multiple movable guide wheel assemblies 4 and the movable adjustment knife holder 5 open and close synchronously, that is, move away from or close to the center of the stripping hole 3, so that the movable guide wheel assembly 4 and the movable adjustment knife holder 5 fit the outer surface of the wire;

[0035] The plurality of movable guide wheel assemblies 4 are used for clamping, positioning and conveying wires;

[0036] Cooperating with the wire stripping device 1 to convey the wire into the movable guide wheel assembly 4, so that the wire moves between the plurality of movable guide wheel assemblies 4;

[0037] Adjustment according to the thickness of the wire insulation layer: After the position of the movable adjustment knife holder 5 is adjusted, the plurality of cutter bodies 8 can be adjusted to be close to or away from the center of the wire stripping hole 3 according to the thickness of the wire insulation layer;

[0038] Since the cutter body 8 moves along the radial direction of the wire stripping hole 3, at this time, the wire stripping hole 3 can be driven to move radially by pressing the axial push-pull connecting rod assembly 9 to move axially;

[0039] And by controlling the synchronous fine-tuning assembly 10, the plurality of axial push-pull connecting rod assemblies 9 can be synchronously moved forward and backward axially, so that the plurality of cutter bodies 8 are moved close to or away from the center of the stripping hole 3;

[0040] The worm gear adjustment assembly 7 enables the synchronous connecting rod assembly 6 to be adjusted stably to prevent displacement due to accidental contact.

[0041] The wire stripping assembly 2 of the present invention comprises a wire outlet 201 arranged at the end of the wire stripping device 1 , a plurality of support rods 202 are arranged around the wire outlet 201 , and a support ring 203 is connected and fixed between the plurality of support rods 202 .

[0042] The plurality of movable guide wheel assemblies 4 of the present invention are evenly distributed around the central circumference of the wire stripping hole 3;

[0043] The movable guide wheel assembly 4 comprises a linear guide groove 401 arranged on the support ring 203, a linear slider 402 is movably arranged in the linear guide groove 401, a wheel frame 403 is arranged on the linear slider 402, and an auxiliary positioning wheel 404 is arranged on the wheel frame 403;

[0044] The four auxiliary positioning wheels 404 are close to the outer surface of the wire and drive the wire to be output; they cooperate with the four cutter bodies 8 to make four incisions on the wire, making it convenient to take out the metal material and the inner wire;.

[0045] The number of the movable adjusting knife holders 5 of the present invention is the same as the number of the movable guide wheel assemblies 4 , and a plurality of the movable adjusting knife holders 5 and a plurality of the movable guide wheel assemblies 4 are staggered in a clockwise direction along the wire stripping hole 3 .

[0046] The movable adjustable tool holder 5 of the present invention comprises an oblique guide groove 501 arranged between two adjacent linear guide grooves 401 , an oblique slide block 502 is movably arranged in the oblique guide groove 501 , and a cutter installation groove 503 is arranged on the oblique slide block 502 .

[0047] The synchronous connecting rod assembly 6 of the present invention comprises an annular guide groove 601 arranged on the back of the support ring 203, a rotating adjustment ring 602 is rotatably installed in the annular guide groove 601, the number of the movable adjustment tool holder 5 is four, the end surface of the rotating adjustment ring 602 is evenly distributed with eight first hinged parts 603 around the central circumference of the rotating adjustment ring 602, the oblique slider 502 and the linear slider 402 are respectively provided with a second hinged part 604, and a synchronous connecting rod 605 is hinged between the first hinged part 603 and a corresponding second hinged part 604;

[0048] The rotating adjustment ring 602 is rotated to adjust the angle. When the rotating adjustment ring 602 rotates, it will drive the multiple synchronous connecting rods 605 to push and pull the corresponding second hinged part 604. When the second hinged part 604 is pushed and pulled, the corresponding inclined slider 502 or the linear slider 402 will be positioned in the corresponding guide groove, thereby realizing a synchronous opening and closing action.

[0049] The worm gear adjustment assembly 7 of the present invention comprises a worm mounting seat 701 arranged on the back of the support ring 203, an adjustment worm 702 is rotatably mounted on the worm mounting seat 701, an adjustment worm gear 703 is arranged on the circumferential outer wall of the rotating adjustment ring 602, and the adjustment worm 702 and the adjustment worm gear 703 are meshed for transmission;

[0050] The adjusting worm 702 is rotated to drive the adjusting worm wheel 703 to rotate stably.

[0051] The axial push-pull connecting rod assembly 9 of the present invention comprises an axial guide hole 901 arranged at the outer end of the cutter installation groove 503, an axial adjustment rod 902 is movably arranged in the axial guide hole 901, a third hinge part 903 is arranged on the axial adjustment rod 902, a fourth hinge part 904 is arranged at the outer end of the cutter body 8, and a push-pull connecting rod 905 is arranged between the third hinge part 903 and the fourth hinge part 904;

[0052] When the axial adjustment rod 902 moves in the axial direction, it drives the push-pull connecting rod 905 to make the cutter body 8 move in the radial direction;

[0053] The synchronous fine-tuning assembly 10 of the present invention comprises a wire tube 101 arranged on the wire stripping hole 3, a plurality of guide rod through holes 102 are arranged on both sides of the inclined guide groove 501, guide rods 103 are movably arranged in the guide rod through holes 102, a synchronous adjustment frame 104 is arranged between the plurality of guide rods 103, a synchronous bevel groove 105 is arranged on the synchronous adjustment frame 104, an annular groove 106 is arranged on the circumferential outer wall of the outer end of the axial adjustment rod 902, the annular groove 106 is movably installed in a corresponding one of the synchronous bevel grooves 105, the annular groove 106 synchronously follows the axial movement of the synchronous bevel groove 105, and a synchronous axial adjustment structure 107 for synchronously controlling the axial movement of the plurality of guide rods 103 is arranged on the wire tube 101;

[0054] Since the cutter body 8 will move synchronously radially with the movable adjustment tool holder 5, the cutter body 8 will be at different radial positions before fine adjustment. In order to enable the cutter body 8 at different radial positions to be synchronously axially pushed, the synchronous bevel groove 105 and the annular clamping groove 106 are provided at this time. The length of the synchronous bevel groove 105 covers the length range of the movable adjustment tool holder 5, ensuring that the cutter body 8 drives the annular clamping groove 106 to be driven by the front-rear axial movement of the synchronous bevel groove 105 at any radial position within the range;

[0055] When the synchronous inclined groove 105 moves axially, the annular groove 106 moves axially along with the synchronous movement, thereby driving the axial adjustment rod 902 to move axially;

[0056] The synchronous axial adjustment structure 107 of the present invention comprises an external thread 1071 provided on the circumferential outer wall of the wire tube 101, an adjusting nut 1072 is threadedly connected to the external thread 1071, an annular synchronous groove 1073 is provided on the circumferential outer wall of the adjusting nut 1072, a synchronous arc 1074 is provided at the inner end of the guide rod 103, and the synchronous arc 1074 is fitted in the annular synchronous groove 1073;

[0057] The plurality of synchronization arc-shaped members 1074 synchronously follow the axial movement of the annular synchronization groove 1073;

[0058] The adjusting nut 1072 is rotated, and the adjusting nut 1072 cooperates with the external thread 1071 to move in the axial direction. At this time, the annular synchronous groove 1073 moves forward and backward along the axial direction, and cooperates with the synchronous arc-shaped member 1074 to drive the synchronous arc-shaped member 1074 to move forward and backward synchronously. When the synchronous arc-shaped member 1074 moves forward and backward, it will drive the synchronous adjustment frame 104 to move forward and backward synchronously.

[0059] Since the adjusting nut 1072 will rotate in a circular motion, at this time, the synchronization arc member 1074 does not interfere with the rotational motion of the annular synchronization groove 1073. When the annular synchronization groove 1073 moves axially, it will drive the synchronization arc member 1074 to move axially.

[0060] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A wire stripping device that can adapt to various sizes of wires, comprising a wire stripping device (1), characterized in that: The wire stripping device (1) is provided with a wire stripping assembly (2), a wire stripping hole (3) is provided in the middle of the wire stripping assembly (2), a plurality of movable guide wheel assemblies (4) for clamping the wire are provided around the wire stripping hole (3), a plurality of movable adjustable knife holders (5) for cutting the insulation layer of the wire are provided around the wire stripping hole (3), a synchronous connecting rod assembly (6) for controlling the plurality of movable guide wheel assemblies (4) and the plurality of movable adjustable knife holders (5) to simultaneously move away from or approach the center of the wire stripping hole (3) is provided on the wire stripping assembly (2), and a plurality of movable guide wheel assemblies (4) and a plurality of movable adjustable knife holders (5) are provided on the wire stripping assembly (2). A worm gear adjustment assembly (7) is provided for controlling the synchronous connecting rod assembly (6); a cutter body (8) is movably provided in the movable adjustment tool holder (5); the cutter body (8) moves radially toward the center of the wire stripping hole (3); an axial push-pull connecting rod assembly (9) is provided on the movable adjustment tool holder (5) for controlling the radial distance movement of the cutter body (8); and a synchronous fine-tuning assembly (10) is provided on the wire stripping assembly (2) for controlling the movement of a plurality of the cutter bodies (8) relative to a corresponding one of the movable guide wheel assemblies (4).

2. The wire stripping device that can adapt to various sizes according to claim 1 is characterized in that: The wire stripping assembly (2) comprises a wire outlet (201) arranged at the end of the wire stripping device (1), a plurality of support rods (202) are arranged around the wire outlet (201), and a support ring (203) is connected and fixed between the plurality of support rods (202).

3. The wire stripping device that can adapt to various sizes according to claim 2 is characterized in that: A plurality of movable guide wheel assemblies (4) are evenly distributed around the central circumference of the wire stripping hole (3); The movable guide wheel assembly (4) comprises a linear guide groove (401) arranged on the support ring (203), a linear slider (402) is movably arranged in the linear guide groove (401), a wheel frame (403) is arranged on the linear slider (402), and an auxiliary positioning wheel (404) is arranged on the wheel frame (403).

4. The wire stripping device that can adapt to various sizes according to claim 3 is characterized in that: The number of the movable adjustment knife racks (5) is the same as the number of the movable guide wheel assemblies (4); a plurality of the movable adjustment knife racks (5) and a plurality of the movable guide wheel assemblies (4) are arranged alternately in a clockwise direction along the wire stripping hole (3).

5. The wire stripping device that can adapt to various sizes according to claim 4 is characterized in that: The movable adjustable tool holder (5) comprises an oblique guide groove (501) arranged between two adjacent linear guide grooves (401), an oblique sliding block (502) is movably arranged in the oblique guide groove (501), and a cutter installation groove (503) is arranged on the oblique sliding block (502).

6. The wire stripping device that can adapt to various sizes according to claim 5 is characterized in that: The synchronous connecting rod assembly (6) comprises an annular guide groove (601) arranged on the back side of the support ring (203), a rotating adjustment ring (602) is rotatably installed in the annular guide groove (601), the number of the movable adjustment tool holders (5) is four, the end surface of the rotating adjustment ring (602) is evenly distributed with eight first hinged parts (603) around the central circumference of the rotating adjustment ring (602), the oblique slider (502) and the linear slider (402) are each provided with a second hinged part (604), and a synchronous connecting rod (605) is hinged between the first hinged part (603) and a corresponding one of the second hinged parts (604).

7. The wire stripping device that can adapt to various sizes according to claim 6 is characterized in that: The worm and worm gear adjustment assembly (7) comprises a worm mounting seat (701) arranged on the back of the support ring (203), an adjustment worm (702) is rotatably mounted on the worm mounting seat (701), an adjustment worm gear (703) is arranged on the circumferential outer wall of the rotating adjustment ring (602), and the adjustment worm (702) and the adjustment worm gear (703) are meshed and transmitted.

8. The wire stripping device that can adapt to various sizes according to claim 7 is characterized in that: The axial push-pull connecting rod assembly (9) comprises an axial guide hole (901) arranged at the outer end of the cutter mounting groove (503), an axial adjustment rod (902) is movably arranged in the axial guide hole (901), a third hinge part (903) is arranged on the axial adjustment rod (902), a fourth hinge part (904) is arranged at the outer end of the cutter body (8), and a push-pull connecting rod (905) is arranged between the third hinge part (903) and the fourth hinge part (904).

9. The wire stripping device adaptable to various sizes according to claim 8, characterized in that: The synchronous fine-tuning component (10) comprises a wire tube (101) arranged on the wire stripping hole (3), a plurality of guide rod through holes (102) are arranged on both sides of the inclined guide groove (501), guide rods (103) are movably arranged in the guide rod through holes (102), a synchronous adjustment frame (104) is arranged between the plurality of guide rods (103), a synchronous inclined groove (105) is arranged on the synchronous adjustment frame (104), an annular groove (106) is arranged on the circumferential outer wall of the outer end of the axial adjustment rod (902), the annular groove (106) is movably installed in a corresponding one of the synchronous inclined grooves (105), the annular groove (106) synchronously follows the axial movement of the synchronous inclined groove (105), and a synchronous axial adjustment structure (107) for synchronously controlling the axial movement of the plurality of guide rods (103) is arranged on the wire tube (101).

10. The wire stripping device that can adapt to various sizes according to claim 9 is characterized in that: The synchronous axial adjustment structure (107) comprises an external thread (1071) arranged on the circumferential outer wall of the wire tube (101), an adjusting nut (1072) is threadedly connected to the external thread (1071), an annular synchronous groove (1073) is arranged on the circumferential outer wall of the adjusting nut (1072), and a synchronous arc-shaped member (1074) is arranged at the inner end of the guide rod (103), and the synchronous arc-shaped member (1074) is fitted in the annular synchronous groove (1073); The plurality of synchronization arc-shaped members (1074) synchronously follow the axial movement of the annular synchronization groove (1073).

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