Automatic wire stripper

Abstract

The invention provides an automatic wire stripper, which belongs to the technical field of electric power tools, and comprises a pair of stripper bodies hinged by a pivot, the pair of stripper bodies is divided into a stripper head and a stripper handle along the two sides of the pivot, a pair of clamping jaws are fixedly mounted on the clamping part of the stripper head, a pair of stretching jaws are slidably mounted in the stripper head, and the stretching jaws and the stripper handle are connected through a draw bar. The forceps handle extrudes and closes the forceps head and drags the stretching jaw to move towards the forceps handle, a self-adaptive cutting mechanism irrelevant to the state of the stretching jaw is arranged between the forceps head and the stretching jaw and close to the clamping part of the forceps head, the cutting mechanism comprises a blade and a heating structure used for heating the blade, the traction rod comprises an elastic structure, and the elastic structure is used for adapting to the cutting mechanism. According to the scheme, the blade slowly cuts the insulating layer of the wire in a hot melting mode through the heating structure, the stretching jaw which is independently installed in a sliding mode is cooperated to clamp the wire skin part to be stripped, when the strength of the wire skin is reduced after hot cutting till the wire skin cannot bear the elastic tension, the wire skin is broken and falls off, and therefore automatic wire stripping without damaging an inner core is achieved.

Description

Technical Field

[0001] This invention relates to the field of power tool technology, and more specifically to an automatic wire stripper. Background Technology

[0002] Wire strippers are tools used to strip the insulation from electrical wires, aiming to quickly and accurately remove the insulation layer from the ends of wires without damaging the internal metal conductor. Traditional wire strippers consist of a pair of pivotally connected jaws, divided into a front jaw and a rear handle. The jaw has multiple stripping holes of different diameters on its inner side. To use them, the wire is inserted into the matching stripping hole, the handle is gripped, and the cutting edges of the stripping hole circumferentially cut the insulation layer. Then, by pulling, the insulation is detached from the wire. However, traditional wire strippers often require considerable force to strip the insulation, which can easily damage the wire itself and may cause the tool to slip from the hand, especially in high-voltage or high-altitude working environments, posing a significant health risk to workers.

[0003] Existing patent CN220273179U discloses a wire stripper. This wire stripper opens by pressing the handle, where a first mounting base presses down to fix the wire, and a second mounting base cuts the wire insulation. Then, it automatically pulls the wire to complete the stripping. Patent CN118412791B discloses a wire stripper with adjustable stripping length and its usage method. This solution adjusts the distance between the cutting baffle and the cutting blade by adjusting a knob, accommodating different stripping lengths and meeting the stripping needs of wires with different diameters. Both of these patents use the lateral clamping and cutting of the pliers head, combined with an opening action, to separate and remove the wire insulation. While this achieves a certain degree of automatic stripping, the pliers jaws are occupied during the stripping process, losing the clamping, bending, and shaping properties of traditional pliers.

[0004] In actual operations, especially in high-risk, high-efficiency scenarios such as working at heights, in confined spaces, or during emergency power repairs, electricians often need to perform multiple operations such as stripping and bending wires frequently. If single-function wire strippers are used, it is necessary to carry additional needle-nose pliers or other auxiliary tools, which not only increases the burden of carrying tools but also easily leads to inconvenience, reduced efficiency, and even safety hazards such as falling objects from heights or misoperation due to frequent tool switching or loss of tools.

[0005] Patent CN111418124B discloses a wire stripper comprising jaws, a cutting jaw located inside the jaws, and a handle. The cutting jaw can move towards the handle via a traction rod when the handle is closed. A blade is fixedly mounted on the front of the cutting jaw, closing with the jaws when they are closed. The blade cuts and removes the wire insulation as it moves with the jaws. A sliding groove is provided between the jaws, allowing adjustment of the blade's cutting depth. This design simultaneously features fine-tuning of the cutting depth, automatic wire stripping, and wire shaping. However, in practical use, fine-tuning the blade's cutting depth is a cumbersome process. Furthermore, the blade remains fixed relative to the jaws, which may cause the wire insulation to press against the jaws, resulting in insufficient blade penetration and incomplete cutting of the insulation. This could lead to further jaw movement and blade damage. Alternatively, even with sufficient blade penetration, damage to the conductor core may occur during the blade's axial movement to separate the insulation. Summary of the Invention

[0006] The purpose of this invention is to provide an automatic wire stripper to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention provides the following technical solution:

[0008] An automatic wire stripper includes: a pair of jaws pivotally connected by a pivot, the jaws being divided into a head and a handle on both sides of the pivot; a pair of clamping jaws fixedly mounted on the clamping portion of the jaws; a pair of extension jaws slidably mounted inside the jaws; the extension jaws and the handles being connected by a traction rod; the handles close the jaws by squeezing and pulling the extension jaws toward the handles; an adaptive cutting mechanism, independent of the state of the extension jaws, is provided between the jaws and the clamping portion of the jaws; the cutting mechanism includes a blade and a heating structure for heating the blade; the traction rod includes an elastic structure for adapting to the cutting mechanism.

[0009] Preferably, the cutting mechanism includes an installation part and a pressing part. The installation part includes an installation cavity and a buffer cavity. The lower edge of the pressing part protrudes and is nested in the installation cavity without separation. A guide post is provided at the bottom of the pressing part. An avoidance hole adapted to the guide post is provided in the buffer cavity. A buffer spring is sleeved on the guide post. The buffer spring abuts against the bottom of the pressing part and the top of the buffer cavity to provide adaptive cutting force.

[0010] Preferably, the heating structure includes a heating wire wound around the heating hole of the blade, the blade is fixedly installed in the mounting cavity, and the two ends of the heating wire are connected to a power source through wires. The power source is detachably installed in a pliers handle, and a power switch is provided on the inside of the pliers handle.

[0011] Preferably, the pliers head is provided with an adjustment hole, an adjustment buckle is embedded in the adjustment hole, and an adjustment block is provided below the adjustment buckle. The adjustment block is installed in the pliers head by rotating via a pivot and is located directly above the cutting mechanism. The adjustment buckle causes the adjustment block to abut against the cutting mechanism, thereby adjusting the depth of the cutting mechanism.

[0012] Preferably, the top edge of the pressing part protrudes radially to form an adjustment part one, and an adjustment cavity is formed between the adjustment part one and the mounting part. The inner wall of the clamp head extends into the adjustment cavity to form an adjustment part two. An adjustment spring is installed between the adjustment part one and the adjustment part two, so that when the adjustment buckle is retracted, the potential energy of the adjustment spring is released, thereby reducing the depth of the cutting mechanism.

[0013] Preferably, the end of the stretching jaw near the handle is hinged to the second pivot, and an expansion spring is installed on its inner side against the jaw. The outer side of the stretching jaw contacts the inner side of the jaw head, so that the stretching jaw opens around the second pivot by the tension of the expansion spring and closes around the second pivot by the pressure of the jaw head closing.

[0014] Preferably, the traction rod includes a driving rod, a driven rod, a movable rod, and an elastic structure. One end of the driving rod is rotatably mounted in a clamp handle via a pivot three. A torsion spring for rotating the driving rod toward the clamp head is fixedly mounted on the pivot three. The end of the driving rod away from the pivot three is connected to the driven rod via a pivot four. The driven rod has a movable hole to prevent the pivot four from jamming when the clamp handle is closed. The end of the driven rod near the pivot four is connected to the movable rod via the elastic structure. The movable rod is sleeved on a pivot through a displacement hole. The end of the movable rod away from the elastic structure is connected to the tension jaw via a pivot two. The end of the driven rod away from the pivot four is slidably mounted in the clamp handle on the non-torsion spring side.

[0015] Preferably, the elastic structure is a tension spring.

[0016] Preferably, a return spring is provided at the end of the driven rod away from the pivot four. The return spring is sleeved on the driven rod and abuts against the inner wall of the end of the jaw. The return spring is used to push the tension rod to return the tension jaw to the jaw position.

[0017] Preferably, the clamping jaw has a pointed beak structure.

[0018] The beneficial effects of the above-described technical solution of the present invention are as follows:

[0019] The blade in this solution uses a heating structure to slowly and thermally cut the wire insulation layer, softening the insulation material while significantly reducing mechanical stress and effectively preventing scratches or severing of the internal metal conductor due to excessive cutting depth. Simultaneously, an independently sliding tension jaw clamps the portion of the wire sheath to be stripped, and an elastic structure linked by a traction rod generates axial tension along the conductor. When the strength of the wire sheath decreases after thermal cutting to the point where it cannot withstand this elastic tension, it automatically breaks and detaches, thus achieving fully automated wire stripping without damaging the conductor core.

[0020] This solution uses a pointed jaw structure, with both cutting and stretching mechanisms built into the pliers head, without affecting the external jaw shape. After stripping the wire, it can be used for clamping, bending, and shaping the wire, retaining the versatility of traditional needle-nose pliers. It reduces the number of tools required in high-risk scenarios such as working at heights, in confined spaces, or during power emergency repairs, avoiding the risks of operation interruption, tool loss, or even falling objects caused by frequent tool switching, thus balancing safety, practicality, and efficiency. Attached Figure Description

[0021] The above and other objects, features, and advantages of exemplary embodiments of the present invention will become readily apparent upon reading the following detailed description with reference to the accompanying drawings. In the drawings, several embodiments of the invention are illustrated by way of example and not limitation, and like or corresponding reference numerals denote like or corresponding parts, wherein:

[0022] Figure 1 This is a schematic diagram of the structure of the present invention;

[0023] Figure 2 This is a schematic diagram of the internal structure of the present invention;

[0024] Figure 3 for Figure 2 Enlarged view of A in the middle;

[0025] Figure 4 This is a schematic diagram of the cutting mechanism;

[0026] Figure 5 This is a diagram illustrating the adjustment of the latch.

[0027] The attached figures are for illustrative purposes only. Exaggeration or simplification may be used to depict specific structural features. The following are explanations of the figure labels:

[0028] 11. Pliers head; 12. Pliers handle; 13. Pivot; 14. Clamping jaw; 15. Extending jaw; 16. Expansion spring; 2. Adjustment hole; 21. Adjustment buckle; 22. Adjustment block; 23. Limiting rack; 3. Traction rod; 31. Driving rod; 32. Driven rod; 33. Moving rod; 34. Tension spring; 35. Torsion spring; 4. Cutting mechanism; 41. Mounting part; 42. Mounting cavity; 43. Buffer cavity; 44. Clearance hole; 45. Pressing part; 46. 48. Adjustment Part 1; 49. Adjustment Spring; 50. Guide Post; 51. Buffer Spring; 52. Blade; 53. Heating Wire; 54. Heating Hole; 55. Wire; 56. Power Supply; 57. Power Switch; 58. Pin; 61. Hub 1; 62. Hub 2; 63. Hub 3; 64. Hub 4; 65. Hub 5; 66. Hub 6; 67. Movable Hole; 68. Displacement Hole; 69. Translation Hole; 70. Return Spring. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Those skilled in the art should understand that the embodiments described below are only some, not all, of the embodiments disclosed. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0030] The principles and spirit of the present invention will be explained in detail below with reference to several representative embodiments.

[0031] Example 1

[0032] An automatic wire stripper, such as Figure 1-5 As shown, it includes a pair of jaws hinged by a pivot 13. The pair of jaws are divided into jaws 11 and jaws 12 on both sides of the pivot 13. The jaws 11 and jaws 12 of one jaw are non-rigidly connected. The rotational movement of the jaws 12 around the pivot 65 can generate a corresponding rotational movement of the jaws 11 coupled around the pivot 13.

[0033] A pair of clamping jaws 14 are fixedly installed on the clamping part of the pliers head 11. The clamping jaws 14 are pointed structures and are fixedly installed on the jaws by bolts. The clamping jaws 14 are used to clamp the wire 55 when stripping wire and also have the function of bending and shaping the wire 55. A pair of extension jaws 15 are slidably installed inside the pliers head 11. The end of the extension jaw 15 near the pliers handle 12 is hinged to the second pivot 62. An expansion spring 16 is installed on the inner side of the extension jaw 15 against the opposite side. The outer side of the extension jaw 15 contacts the inner side of the pliers head 11, so that the extension jaw 15 opens around the second pivot 62 by the tension of the expansion spring 16 and closes around the second pivot 62 by the pressure of the pliers head 11 closing. The extension jaws 15 and the pliers handle 12 are connected by a traction rod 3. The pliers handle 12 moves the extension jaws 15 towards the pliers handle 12 by squeezing and closing the pliers head 11.

[0034] like Figure 1-4As shown, an adaptive cutting mechanism 4, independent of the state of the stretching jaw 15, is provided near the clamping part of the jaw 11 between the jaw 11 and the stretching jaw 15. The cutting mechanism 4 includes a mounting part 41 and a pressing part 45. The mounting part 41 includes a mounting cavity 42 and a buffer cavity 43. The mounting cavity 42 is provided with a cutting blade 52 and a heating structure for heating the blade 52. In this embodiment, the blade 52 is fixedly mounted by pins 58 through mounting holes on both sides. The blade 52 is provided with heating holes 54. The heating structure includes a heating wire 53 and a power supply 56. The heating wire 53 is wound around the heating hole 54 of the blade 52, and its two ends are connected to the power supply 56 through wires 55. The power supply 56 is detachably installed in the jaw handle 12 on the side of the pivot 65. The backup power supply can be replaced by opening the detachable cover inside the jaw handle. The inside of the jaw handle 12 is provided with a power switch 57. In this design, the clamp body structure is injection molded from an ultra-hard, high-temperature resistant material (such as polyetheretherketone, polyphenylene sulfide, polyimide, or high-temperature nylon). The temperature of the heating wire is set within a stable and safe temperature range, allowing the heating blade 52 to cut the wire insulation (above 80°C) without damaging the clamp body structure. The wire 55 is arranged within the clamp body in any feasible manner (e.g., led out from the mounting cavity 42 to the top of the mounting section 41). The wiring connections and circuit (board) configurations of the power supply 56, wire 55, heating wire 53, and power switch 57 are all existing technologies and will not be described further here.

[0035] In another embodiment, the power switch 57 can be configured as a contact switch during the closing stroke of the pliers handle 12, so that the pliers head 11 automatically contacts the heating blade 52 when it is closed, and the heating stops when the pliers head 11 is released, thus avoiding the power supply being turned on for a long time when the wire stripper is not in use. The contact switch can be provided inside the pliers body in any existing form, which will not be described in detail here.

[0036] like Figure 4-5As shown, the lower edge protrusion of the pressing part 45 is nested in the mounting cavity 42 without separation. The bottom of the pressing part 45 is provided with a guide post 50. The buffer cavity 43 is provided with a clearance hole 44 adapted to the guide post 50. A buffer spring 51 is sleeved on the guide post 50. The buffer spring 51 abuts against the bottom of the pressing part 45 and the top of the buffer cavity 43, so that when the buffer spring 51 is at its maximum stroke, the guide post 50 is still located in the clearance hole 44, avoiding misalignment of the guide post 50. The buffer spring 51 is used to provide cutting adaptive force. The top edge of the pressing part 45 protrudes radially to form an adjustment part 46. An adjustment cavity is formed between the adjustment part 46 and the mounting part 41. The inner wall of the jaw 11 extends into the adjustment cavity to form an adjustment part 48. An adjustment spring 49 is installed between the adjustment part 46 and the adjustment part 48. The adjustment spring 49 causes the cutting mechanism 4 to spring back towards the non-clamping part of the jaw. The jaw 11 is provided with an adjustment hole 2. An adjustment buckle 21 is embedded in the adjustment hole 2. A limiting rack 23 matching the adjustment buckle 21 is provided. The limiting rack 23 is used to fix the adjustment buckle 21. An adjustment block 22 is provided below the adjustment buckle 21. The adjustment block 22 is rotatably installed in the jaw 11 through a pivot 61. The adjustment block 22 is located directly above the cutting mechanism 4. By pushing the adjustment buckle 21 towards the jaw 11, the adjustment block 22 abuts against the pressing part 45, thereby adjusting the depth of the cutting mechanism 4.

[0037] Specifically, by pushing the adjusting latch 21, the adjusting block 22 moves against the pressing part 45 towards the clamping part. At this time, the adjusting spring 49 is compressed, thereby increasing the cutting depth of the blade 52. When the adjusting block 22 retracts, the compression potential energy of the adjusting spring 49 is released, pushing the adjusting part to move in the opposite direction towards the clamping part of the pliers head 11, thereby decreasing the cutting depth of the blade 52. The distance between the first adjusting part 46 and the second adjusting part 48, excluding the compression of the adjusting spring 49, is the range of the increase in the cutting depth of the blade 52. By adjusting the cutting depth of the blade 52 to the corresponding wire specification, and supplementing it with heating to deform the wire insulation, the wire insulation is made easier to cut. The buffer spring 51, in conjunction with the cutting depth setting of the blade 52, prevents damage to the wire core when cutting too deeply. Even if the cutting depth is slightly insufficient, the dragging of the pulling jaw 15 is sufficient to break off the remaining small amount of wire insulation.

[0038] The traction rod 3 includes a driving rod 31, a driven rod 32, a movable rod 33, and an elastic structure adapted to the cutting mechanism 4. In this embodiment, the elastic structure is a tension spring 34. One end of the driving rod 31 is rotatably mounted in a pliers handle 12 via a pivot 3 63. A torsion spring 35 for rotating the driving rod 31 toward the pliers head 11 is fixedly mounted on the pivot 3 63. The end of the driving rod 31 away from the pivot 3 63 is connected to a driven rod 32 via a pivot 4 64. The driven rod 32 is provided with a movable hole 67 to prevent the pivot 4 64 from jamming when the pliers handle 12 is closed. The end of the driven rod 32 near the pivot 4 64 is connected to a movable rod 33 via a tension spring 34. The movable rod 33 is sleeved on the pivot 13 via a displacement hole 68. The displacement hole 68 provides a clearance for the stretching jaw 15 to move back and forth. The end of the movable rod 33 away from the tension spring 34 is connected to the stretching jaw 15 via a pivot 2 62. The end of the driven rod 32 away from the pivot 4 64 is provided with a translation hole 69. The translation hole 69 is slidably mounted in the pliers handle 12 on the side not covered by the torsion spring 35 via a pivot 66. When the clamp handle 12 is initially closed by pressing, the drive rod 31 rotates initially around the pivot 63, causing the clamp head 11 and the tension jaw 15 to close. Further pressing of the clamp handle 12 causes the drive rod 31 to continue rotating around the pivot 63, driving the driven rod 32 to translate towards the clamp handle 12. This causes the tension spring 34 to stretch the movable rod 33, which in turn moves the tension jaw 15 towards the clamp handle 12, allowing the cut wire insulation to be removed. When the clamp handle 12 is released, the torsion spring 35 drives the drive rod 31, which in turn drives the overall traction rod 3 to reset, and the tension jaw 15 returns to its initial state. Furthermore, all pivots 61 to 66 are through-bolt installations, allowing for the installation and removal of the structure through the detachment of these pivots.

[0039] Example 2

[0040] Its main difference from Example 1 is:

[0041] A return spring 70 is provided at the end of the driven rod 32 away from the pivot 64. The return spring 70 is sleeved on the driven rod 32 and abuts against the inner wall of the end of the jaw 12. The return spring 70 is used to assist in pushing the tension rod to return the tension jaw 15 to the jaw position.

[0042] The above-described preferred embodiments of the present invention are provided as examples, but it will be apparent to those skilled in the art that such embodiments are provided merely by way of example. Many modifications, alterations, and alternatives will occur to those skilled in the art without departing from the spirit and intent of the invention. It should be understood that various alternatives to the embodiments of the invention described herein may be employed in the practice of the invention. The appended claims are intended to define the scope of protection of the invention and therefore cover the modular compositions, equivalents, or alternatives within the scope of these claims.

Claims

1. An automatic wire stripping pliers, comprising a pair of pliers bodies hinged by a pivot (13), the pair of pliers bodies is divided into a pliers head (11) and a pliers handle (12) along both sides of the pivot (13), a pair of clamping jaws (14) is fixedly installed on the clamping part of the pliers head (11), a pair of stretching jaws (15) is slidingly installed inside the pliers head (11), the stretching jaws (15) and the pliers handle (12) are connected through a traction rod (3), the pliers handle (12) moves the stretching jaws (15) to the pliers handle (12) by extruding the pliers head (11) and closing the pliers head (11), characterized in that, The self-adapting cutting mechanism (4) is arranged between the plier head (11) and the stretching jaw (15) near the clamping part of the plier head (11) and is irrelevant to the state of the stretching jaw (15), the cutting mechanism (4) comprises a blade (52) and a heating structure for heating the blade (52), and the traction rod (3) comprises an elastic structure for adapting the cutting mechanism (4).

2. The automatic wire stripper of claim 1, wherein, The cutting mechanism (4) comprises a mounting part (41) and a pressing part (45), the mounting part (41) comprises a mounting cavity (42) and a buffer cavity (43), the lower edge of the pressing part (45) is embedded in the mounting cavity (42) without separation, the bottom of the pressing part (45) is provided with a guide column (50), the buffer cavity (43) is provided with a avoiding hole (44) matched with the guide column (50), the guide column (50) is sleeved with a buffer spring (51), the buffer spring (51) abuts against the bottom of the pressing part (45) and the top of the buffer cavity (43) to provide a cutting adaptation force.

3. The automatic wire stripper of claim 2, wherein, The heating structure comprises an electric heating wire (53), the electric heating wire (53) is wound on a heating hole (54) of the blade (52), the blade (52) is fixedly installed in the mounting cavity (42), the two ends of the electric heating wire (53) are connected with a power supply (56) through wires (55), and the power supply (56) is detachably installed in one plier handle (12), and the inner side of the plier handle (12) is provided with a power switch (57).

4. The automatic wire stripper of claim 2, wherein, The plier head (11) is provided with an adjusting hole (2), the adjusting hole (2) is embedded with an adjusting buckle (21), the lower side of the adjusting buckle (21) is provided with an adjusting block (22), the adjusting block (22) is rotatably installed in the plier head (11) through a hinge (61), the adjusting block (22) is located directly above the cutting mechanism (4), and the adjusting block (22) is adjusted by the adjusting buckle (21) to abut against the cutting mechanism (4) to adjust the depth of the cutting mechanism (4).

5. The automatic wire stripper of claim 4, wherein, The top edge of the pressing part (45) is radially protruded to form an adjusting part (46), the adjusting part (46) and the mounting part (41) form an adjusting cavity, the inner wall of the plier head (11) extends into the adjusting cavity to form an adjusting part (48), and the adjusting spring (49) is installed between the adjusting part (46) and the adjusting part (48) to release the potential energy of the adjusting spring (49) when the adjusting buckle (21) is adjusted, so that the depth of the cutting mechanism (4) is reduced.

6. The automatic wire stripper of claim 1, wherein, The stretching jaw (15) is hingedly connected to one end of the plier handle (12) through a hinge (62), the inner side of the stretching jaw (15) is oppositely and abuttingly installed with an expansion spring (16), the outer side of the stretching jaw (15) is in contact with the inner side of the plier head (11), so that the stretching jaw (15) is opened around the hinge (62) through the tension of the expansion spring (16) and is closed around the hinge (62) through the closing pressure of the plier head (11).

7. The automatic wire stripper of claim 6, wherein, The traction rod (3) comprises a driving rod (31), a driven rod (32), a movable rod (33) and an elastic structure, one end of the driving rod (31) is rotatably installed in one handle (12) through a hinge three (63), the hinge three (63) is fixedly installed with a torsion spring (35) for rotating the driving rod (31) to the direction of the jaw (11), the end of the driving rod (31) away from the hinge three (63) is connected with the driven rod (32) through a hinge four (64), the driven rod (32) is provided with a movable hole (67) for avoiding the hinge four (64) from being stuck when the handle (12) is closed, the end of the driven rod (32) close to the hinge four (64) is connected with the movable rod (33) through the elastic structure, the movable rod (33) is sleeved on the pivot (13) through a displacement hole (68), the end of the movable rod (33) away from the elastic structure is connected with the stretching jaw (15) through a hinge two (62), and the end of the driven rod (32) away from the hinge four (64) is slidably installed in the handle (12) on the side of the non-torsion spring (35).

8. The automatic wire stripper of claim 7, wherein, The elastic structure is a stretching spring (34).

9. The automatic wire stripper of claim 7, wherein, The end of the driven rod (32) away from the hinge four (64) is provided with a reset spring (70), the reset spring (70) is sleeved on the driven rod (32) and abuts against the inner wall of the end of the handle (12), and the reset spring (70) is used for pushing the stretching rod to reset the stretching jaw (15) to the state of the jaw.

10. The automatic wire stripper of claim 1, wherein, The clamping jaw (14) is a sharp beak structure.

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