An electric wire stripping machine

Abstract

The utility model relates to cable processing technical field, and disclose a kind of electric wire stripping machine, including cabinet, and the lateral wall of cabinet is respectively fixed with inlet and collection box, and the inside of cabinet is fixedly provided with controller, and the inside of cabinet is respectively provided with top mechanism one and clamping mechanism, and top mechanism one is provided with top mechanism two, and electric push rod is fixedly installed on top mechanism two, and stripping assembly is also provided on top mechanism two, and the output end of electric push rod is fixedly connected with stripping assembly, and stripping assembly is provided with center ejector pin, the utility model realizes the automation clamping and loosening of cable, and high-precision cutting is also realized, not only stripping efficiency is high, and precision is higher.

Description

Technical Field

[0001] This utility model relates to the field of cable processing technology, specifically to an electric wire stripping machine. Background Technology

[0002] In the current trend of specialization, automation, and division of labor in the wire harness industry, traditional manual wire stripping methods can no longer meet industry demands. Manual wire stripping relies primarily on operators using hand-held stripping tools, which presents several problems: First, it is extremely inefficient; a skilled worker can only strip a few dozen wire harnesses per hour, making it unsuitable for mass production. Second, it suffers from poor precision; manual operation easily leads to deviations in stripping length and can easily damage the internal copper core or insulation layer of the cable, resulting in impaired wire harness conductivity and a defect rate as high as 5%-10%. Third, it is labor-intensive; operators performing repetitive, single actions for extended periods are prone to fatigue, further reducing processing quality and efficiency. Fourth, it is difficult to standardize; significant differences in processing techniques among different operators result in inconsistent wire harness stripping, affecting subsequent assembly accuracy.

[0003] With increasing demands for product quality and rising labor costs, the wire harness industry urgently needs to replace manual operations with automated and semi-automated equipment to address pain points such as low efficiency, poor precision, and inconsistent performance. Simultaneously, the demand for high-precision manufacturing equipment is growing rapidly, making the technological upgrading of wire harness processing equipment crucial for driving high-quality development in the industry. Therefore, developing a high-efficiency and precise automated wire harness stripping machine is imperative.

[0004] Therefore, we propose an electric wire stripper to solve the problems mentioned above. Utility Model Content

[0005] The purpose of this invention is to provide an electric wire stripping machine to solve the problems of low efficiency, high labor intensity, and poor stripping accuracy of manual wire stripping mentioned in the background art.

[0006] This utility model provides the following technical solution: an electric wire stripper, including a casing, with a wire inlet and a collection box fixedly installed on the side wall of the casing, and a controller fixedly installed inside the casing. The casing is equipped with a first pushing mechanism and a clamping mechanism. The first pushing mechanism is equipped with a second pushing mechanism, and an electric push rod is fixedly installed on the second pushing mechanism. The second pushing mechanism is also equipped with a wire stripping assembly. The output end of the electric push rod is fixedly connected to the wire stripping assembly, and a central pin is provided on the wire stripping assembly.

[0007] Preferably, the jacking mechanism includes a first fixed plate and a second fixed plate, which are respectively fixedly installed on the bottom surface of the inner cavity of the chassis. The first fixed plate and the second fixed plate are fixedly connected by a pair of connecting rods. A tapered block is slidably installed on both connecting rods. A stepper motor is fixedly installed on one outer wall of the first fixed plate. The output shaft of the first stepper motor passes through the first fixed plate, and a driving gear is fixedly installed on the output shaft of the first stepper motor. A driven gear is rotatably installed on the other outer wall of the first fixed plate, and the driving gear and the driven gear are meshed together. A lead screw is fixedly installed on the side wall of the driven gear. The lead screw is threadedly connected to the tapered block, and the end of the lead screw away from the driven gear is rotatably installed on the side wall of the second fixed plate.

[0008] Preferably, the clamping mechanism includes a pair of rotating shafts that are rotatably mounted on the fixed plate 2. Support arms are fixedly sleeved on the side of the two rotating shafts near the tapered block 1, and each support arm is elastically connected to the fixed plate 2 by a torsion spring 1. A pair of mounting plates are symmetrically fixedly mounted on the inner wall of the collection box. A pair of sliding rods are fixedly mounted on the two mounting plates. A pair of L-shaped slide seats are symmetrically slidably sleeved on the two slide rods. A clamping plate is fixedly mounted on each L-shaped slide seat. A mounting ear 1 is fixedly mounted on the bottom surface of each L-shaped slide seat. A mounting ear 2 is fixedly mounted on the side wall of the rotating shaft near the mounting ear 1, and the mounting ear 1 and mounting ear 2 are movably connected by a connecting shaft.

[0009] Preferably, the second jacking mechanism includes an L-shaped top plate fixedly installed on the top surface of the second fixed plate. A pair of positioning rods are fixedly installed on the side wall of the L-shaped top plate facing the wire stripping assembly. The wire stripping assembly is slidably mounted on the two positioning rods. A stepper motor is fixedly installed on one outer wall of the second fixed plate. A driving gear and a driven gear are rotatably installed on the side wall of the L-shaped top plate facing the first tapered block, and the driving gear and the driven gear are meshed together. The driving gear and the output shaft of the stepper motor are fixedly connected through a transmission shaft. A lead screw is fixedly installed on the side wall of the driven gear facing the wire stripping assembly. The second fixed plate and the L-shaped top plate are fixedly connected through a pair of reinforcing rods.

[0010] Preferably, the wire stripping assembly includes a mounting box slidably mounted on a positioning rod. The side wall of the mounting box is fixedly connected to the output end of the electric push rod. A groove is provided on the bottom surface of the inner cavity of the mounting box. A tapered block II is slidably mounted inside the groove, and the tapered block II is threadedly connected to the lead screw II. A pair of limiting posts are also symmetrically fixedly mounted on the bottom surface of the inner cavity of the mounting box. A swing arm is rotatably mounted on each limiting post. Each swing arm is elastically connected to the mounting box through a torsion spring II. A wire cutting assembly is connected to the end of each swing arm away from the limiting post.

[0011] Preferably, the swing arm includes an arm body, and a clearance groove is provided at the end of the arm body away from the limiting post.

[0012] Preferably, the tangent assembly includes a slide plate that is embedded and slidably installed in the inner cavity of the mounting box. A mounting ear three is fixedly installed on the side wall of the slide plate, and a column is fixedly installed on the top surface of the mounting ear three. The column is slidably disposed in the inner cavity of the relief groove. A screw rod is threaded through the side wall of the slide plate, and a mounting plate is fixedly installed on the screw rod. A connector is rotatably installed on the side wall of the mounting plate. A cutter is slidably installed inside the slide plate, and the cutter and the connector are elastically connected by a spring.

[0013] This utility model has the following beneficial effects:

[0014] 1. This utility model realizes the automatic clamping and loosening of cables. The structure precisely controls the movement of the tapered block by a stepper motor, which can not only adjust the clamping force on the cable, but also adapt to cables of different diameters. At the same time, it can avoid damage to the cable due to excessive clamping force or slippage of the cable due to insufficient clamping force.

[0015] 2. This utility model can change the pressure of the cutter on the cable by adjusting the deformation of the spring; when the cutter cuts the insulation layer, the elastic force of the spring keeps the cutter in contact with the surface of the cable, which can ensure accurate cutting depth and adapt to insulation layers of different thicknesses, avoiding damage to the copper core due to excessive pressure or failure to cut the insulation layer due to insufficient pressure.

[0016] 3. This utility model can accurately determine the stripping length by setting a central ejector pin, and the set length can be adjusted by PLC software to adapt to different processing needs. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0018] Figure 2 This is a schematic diagram of the internal structure of this utility model.

[0019] Figure 3 This is a schematic diagram showing the installation position of the tapered block one of this utility model.

[0020] Figure 4 This is a three-dimensional structural diagram of the wire stripping assembly of this utility model.

[0021] Figure 5 This is a schematic diagram showing the placement of the cable according to this utility model.

[0022] Figure 6 This is a schematic diagram of the internal structure of the wire stripping assembly of this utility model.

[0023] Figure 7This is a cross-sectional schematic diagram of the wire stripping assembly of this utility model.

[0024] Figure 8 for Figure 7 Enlarged view of point A.

[0025] Figure 9 for Figure 8 Enlarged view of point B.

[0026] Figure 10 This is a cross-sectional schematic diagram of the tangent component of this utility model.

[0027] Figure 11 for Figure 10 Enlarged view of point C.

[0028] In the diagram: 1. Chassis; 2. Cable inlet; 3. Collection box; 4. Controller; 5. Pushing mechanism one; 51. Fixing plate one; 52. Fixing plate two; 53. Connecting rod; 54. Stepper motor one; 55. Lead screw one; 56. Taper block one; 57. Driving gear one; 58. Driven gear one; 6. Clamping mechanism; 61. Rotating shaft; 62. Support arm; 63. Torsion spring one; 64. Mounting plate; 65. Slide rod; 66. L-shaped slide; 67. Clamping plate; 68. Mounting ear one; 69. Connecting shaft; 610. Mounting ear two; 7. Pushing mechanism two; 71. L-shaped top plate; 72. 73. Positioning rod; 74. Stepper motor II; 75. Drive gear II; 76. Driven gear II; 77. Lead screw II; 78. Taper block II; 79. Reinforcing rod; 80. Wire stripping assembly; 81. Mounting box; 82. Slide groove; 83. Limiting post; 84. Swing arm; 841. Arm body; 842. Relief groove; 85. Torsion spring II; 86. Wire cutting assembly; 861. Slide plate; 862. Cutting blade; 863. Mounting ear III; 864. Column; 865. Screw; 866. Mounting plate; 867. Connector; 868. Spring; 9. Center pin; 10. Electric actuator. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] Example 1

[0031] This embodiment aims to help solve the problems of unstable cable clamping and poor cutting accuracy. Please refer to [link / reference]. Figure 1-11 ,like Figure 1As shown, an electric wire stripper includes a housing 1, which supports and protects the internal components. An inlet 2 and a collection box 3 are fixedly installed on the side wall of the housing 1. When stripping cables, the operator inserts the cable through the inlet 2 before stripping. The stripped waste insulation layer falls into the collection box 3 for collection and subsequent processing. Figure 2 As shown, a controller 4 is fixedly installed inside the casing 1. The controller 4 is used to control the normal operation of the entire device. Inside the casing 1, there are a first jacking mechanism 5 and a clamping mechanism 6. A second jacking mechanism 7 is installed on the first jacking mechanism 5. An electric push rod 10 is fixedly installed on the second jacking mechanism 7. A wire stripping assembly 8 is also installed on the second jacking mechanism 7. The output end of the electric push rod 10 is fixedly connected to the wire stripping assembly 8. A central pin 9 is installed on the wire stripping assembly 8.

[0032] The center pin 9 can adjust the restoring force of the internal reset spring according to the wire harness specifications to ensure that the center pin 9 can stably hold the cable, while avoiding damage to the cable due to rigid contact. An induction switch is installed at the tail of the center pin 9. The induction switch is electrically connected to the controller 4. When the cable pushes the center pin 9 to the set position, the induction switch is triggered and sends a contact signal to the controller 4. After receiving the signal, the controller 4 locks the position of the center pin 9, thereby accurately determining the wire stripping length. The set length can be adjusted through PLC software to adapt to different processing requirements.

[0033] When stripping the cable, the operator inserts the cable into the inlet 2, and then the cable comes into contact with the center pin 9. When the center pin 9 is pushed to the preset position by the cable, the controller 4 receives the signal and starts the first jacking mechanism 5. During the operation of the first jacking mechanism 5, the clamping mechanism 6 is pushed to clamp the cable. After the cable is clamped, the controller 4 controls the second jacking mechanism 7 to operate. During the operation of the second jacking mechanism 7, the stripping assembly 8 is driven to cut the cable. After the cutting is completed, the controller 4 controls the electric push rod 10 to move the stripping assembly 8 as a whole, thereby pulling the cut insulation layer off from under the cable and dropping it into the collection box 3 for collection. Then all components are reset for subsequent use. By repeating the above operation, continuous stripping can be achieved.

[0034] like Figures 3-4As shown, the jacking mechanism 5 includes a fixing plate 51 and a fixing plate 52, which are respectively fixedly installed on the bottom surface of the inner cavity of the housing 1. The fixing plate 51 and the fixing plate 52 are fixedly connected by a pair of connecting rods 53. A tapered block 56 is slidably installed on both connecting rods 53. A stepper motor 54 is fixedly installed on one outer wall of the fixing plate 51. The output shaft of the stepper motor 54 passes through the fixing plate 51, and a drive gear 57 is fixedly installed on the output shaft of the stepper motor 54. A driven gear 58 is rotatably installed on the other outer wall of the fixing plate 51, and the drive gear 57 and the driven gear 58 are meshed. A lead screw 55 is fixedly installed on the side wall of the driven gear 58. The lead screw 55 is threadedly connected to the tapered block 56, and the end of the lead screw 55 away from the driven gear 58 is rotatably installed on the side wall of the fixing plate 52.

[0035] like Figure 3 As shown, the clamping mechanism 6 includes a pair of rotating shafts 61 rotatably mounted on the fixed plate 52. Support arms 62 are fixedly sleeved on the side of each shaft 61 near the tapered block 56, and each support arm 62 is elastically connected to the fixed plate 52 via a torsion spring 63. Figures 4-5 As shown, a pair of mounting plates 64 are symmetrically fixedly installed on the inner wall of the collection box 3. A pair of sliding rods 65 are fixedly installed on the two mounting plates 64. A pair of L-shaped sliding seats 66 are symmetrically slidably mounted on the two sliding rods 65. A clamping plate 67 is fixedly installed on each L-shaped sliding seat 66. A mounting ear 68 is fixedly installed on the bottom surface of each L-shaped sliding seat 66. A mounting ear 610 is fixedly installed on the side wall of the rotating shaft 61 near the mounting ear 68. The mounting ear 68 and the mounting ear 610 are movably connected by a connecting shaft 69.

[0036] In this embodiment: Specifically, when stripping the wire, the operator inserts the cable into the inlet 2, and then the cable contacts the center pin 9. When the center pin 9 is pushed to the preset position by the cable, the controller 4 receives a signal and starts the stepper motor 54. During the operation of the stepper motor 54, it drives the lead screw 55 to rotate through the driving gear 57 and the driven gear 58. Since the lead screw 55 is threadedly connected to the tapered block 56, under the limiting effect of the two connecting rods 53 on the tapered block 56, when the lead screw 55 rotates, it can drive the tapered block 56 to rotate. 6. The connecting rod 53 moves towards the support arm 62. When the tapered block 56 contacts the support arm 62, it will apply pressure to the two support arms 62. When the two support arms 62 are under force, they will drive the two rotating shafts 61 to rotate in opposite directions on the fixed plate 52. During the rotation of the two rotating shafts 61, the mounting ear 68, mounting ear 610 and connecting shaft 69 will drive the two L-shaped slides 66 to move towards each other on the slide rod 65 until the clamping plate 67 on the two L-shaped slides 66 clamps the cable, thus realizing the clamping and fixing of the cable.

[0037] Through the above settings, this utility model realizes the automatic clamping and loosening of cables. The structure precisely controls the movement of the tapered block 56 through the stepper motor 54, which can not only adjust the clamping force on the cable, but also adapt to cables of different diameters. At the same time, it can avoid damage to the cable due to excessive clamping force or slippage of the cable due to insufficient clamping force.

[0038] Example 2

[0039] This embodiment aims to improve upon the low efficiency of cable cutting. It is an improvement upon Embodiment 1. For details, please refer to [link to Embodiment 1]. Figure 3-7 ,like Figures 3-4 and Figures 6-7 As shown, the jacking mechanism 2 7 includes an L-shaped top plate 71 fixedly installed on the top surface of the fixed plate 2 52. A pair of positioning rods 72 are fixedly installed on the side wall of the L-shaped top plate 71 facing the wire stripping assembly 8. The wire stripping assembly 8 is slidably mounted on the two positioning rods 72. A stepper motor 2 73 is fixedly installed on one outer wall of the fixed plate 2 52. A driving gear 2 74 and a driven gear 2 76 are rotatably installed on the side wall of the L-shaped top plate 71 facing the tapered block 1 56, and the driving gear 2 74 and the driven gear 2 76 are meshed together. The driving gear 2 74 and the output shaft of the stepper motor 2 73 are fixedly connected through a transmission shaft 75. A lead screw 2 77 is fixedly installed on the side wall of the driven gear 2 76 facing the wire stripping assembly 8. The fixed plate 2 52 and the L-shaped top plate 71 are fixedly connected through a pair of reinforcing rods 79 to enhance the structural stability of the device.

[0040] like Figures 7-8As shown, the wire stripping assembly 8 includes a mounting box 81 slidably mounted on the positioning rod 72. The side wall of the mounting box 81 is fixedly connected to the output end of the electric push rod 10. A groove 82 is provided on the bottom surface of the inner cavity of the mounting box 81. A tapered block 78 is slidably mounted inside the groove 82, and the tapered block 78 is threadedly connected to the lead screw 77. A pair of limiting posts 83 are also symmetrically fixedly mounted on the bottom surface of the inner cavity of the mounting box 81. A swing arm 84 is rotatably sleeved on each limiting post 83. Each swing arm 84 is elastically connected to the mounting box 81 by a torsion spring 85. A wire cutting assembly 86 is connected to the end of each swing arm 84 away from the limiting post 83.

[0041] In this embodiment: Specifically, after the cable is clamped, the controller 4 controls the stepper motor 73 to operate. During the operation of the stepper motor 73, the lead screw 77 will rotate through the driving gear 74 and the driven gear 76. Since the tapered block 78 is threadedly connected to the lead screw 77, and due to the limiting effect of the sliding groove 82 on the tapered block 78, when the lead screw 77 rotates, it can drive the tapered block 78 to move towards the swing arm 84. When the tapered block 78 contacts the swing arm 84 and applies pressure to the swing arm 84, the swing arm 84 will rotate on the limiting post 83, thereby causing the tangent groups on the two swing arms 84 to rotate. The stripper 86 moves towards the cable to cut it. After the insulation layer on the cable is cut, the electric push rod 10 drives the stripping assembly 8 to move away from the cable. The purpose is to remove the cut insulation layer from the cable. During this process, the controller 4 controls the stepper motor 73 to reverse, and then drives the lead screw 77 to rotate in the opposite direction through the drive gear 74 and the driven gear 76. This causes the tapered block 78 to move synchronously away from the cable along with the stripping assembly 8. The purpose is to prevent the force applied by the tapered block 78 and the swing arm 84 from increasing, thus avoiding cutting or damaging the cable.

[0042] Example 3

[0043] This embodiment aims to address the limitations of traditional wire stripping devices in adapting to insulation layers of varying thicknesses, preventing damage to the copper core due to excessive pressure or failure to cut the insulation layer due to insufficient pressure. This embodiment is an improvement upon Embodiment 2. For details, please refer to [link to Embodiment 2]. Figure 8-11 ,like Figures 8-9 As shown, the swing arm 84 includes an arm body 841, and a clearance groove 842 is provided at the end of the arm body 841 away from the limiting post 83.

[0044] like Figures 9-11As shown, the tangent assembly 86 includes a slide plate 861 embedded and slidably installed in the inner cavity of the mounting box 81. A mounting ear 3 863 is fixedly installed on the side wall of the slide plate 861. A column 864 is fixedly installed on the top surface of the mounting ear 3 863, and the column 864 is slidably disposed in the inner cavity of the relief groove 842. A screw 865 is threadedly connected to the side wall of the slide plate 861. A mounting plate 866 is fixedly installed on the screw 865. A connector 867 is rotatably installed on the side wall of the mounting plate 866. A cutter 862 is slidably installed inside the slide plate 861, and the cutter 862 and the connector 867 are elastically connected by a spring 868.

[0045] In this embodiment: Specifically, before continuing to cut the insulation layer of the cable, the operator can determine the screw depth of the screw 865 according to the cable specifications, and then adjust the deformation of the spring 868 to change the pressure of the cutter 862 on the cable; when the cutter 862 cuts the insulation layer, the elastic force of the spring 868 keeps the cutter 862 always in contact with the surface of the cable, which can ensure accurate cutting depth (cutting only the insulation layer without damaging the copper core), and can adapt to insulation layers of different thicknesses, avoiding damage to the copper core due to excessive pressure or failure to cut the insulation layer due to insufficient pressure.

[0046] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0047] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. An electric wire stripper, comprising a housing (1), wherein a wire inlet (2) and a collection box (3) are fixedly disposed on the side wall of the housing (1), and a controller (4) is fixedly disposed inside the housing (1), characterized in that: The chassis (1) is equipped with a first jacking mechanism (5) and a clamping mechanism (6). The first jacking mechanism (5) is equipped with a second jacking mechanism (7). An electric push rod (10) is fixedly installed on the second jacking mechanism (7). A wire stripping assembly (8) is also installed on the second jacking mechanism (7). The output end of the electric push rod (10) is fixedly connected to the wire stripping assembly (8). A central pin (9) is installed on the wire stripping assembly (8).

2. The electric wire stripper according to claim 1, characterized in that: The jacking mechanism 1 (5) includes a fixing plate 1 (51) and a fixing plate 2 (52) respectively fixedly installed on the bottom surface of the inner cavity of the housing (1). The fixing plate 1 (51) and the fixing plate 2 (52) are fixedly connected by a pair of connecting rods (53). A tapered block 1 (56) is slidably installed on both connecting rods (53). A stepper motor 1 (54) is fixedly installed on one outer wall of the fixing plate 1 (51). The output shaft of the stepper motor 1 (54) passes through the fixing plate 1 (51), and the stepper motor 1 (54) is fixedly installed on the outer wall of one side of the fixing plate 1 (51). 4) A drive gear 1 (57) is fixedly installed on the output shaft. A driven gear 1 (58) is rotatably installed on the outer wall of the other side of the fixed plate 1 (51). The drive gear 1 (57) and the driven gear 1 (58) are meshed together. A lead screw 1 (55) is fixedly installed on the side wall of the driven gear 1 (58). The lead screw 1 (55) is threadedly connected to the tapered block 1 (56). The end of the lead screw 1 (55) away from the driven gear 1 (58) is rotatably installed on the side wall of the fixed plate 2 (52).

3. The electric wire stripper according to claim 2, characterized in that: The clamping mechanism (6) includes a pair of rotating shafts (61) that are rotatably mounted on the second fixed plate (52). Support arms (62) are fixedly fitted onto the side of the two rotating shafts (61) near the first tapered block (56), and each support arm (62) is elastically connected to the second fixed plate (52) via a torsion spring (63). A pair of mounting plates (64) are symmetrically fixedly mounted on the inner wall of the collection box (3), and a pair of sliding rods (65) are fixedly mounted on both mounting plates (64). Two sliding rods (65) are symmetrically fitted with a pair of L-shaped sliding blocks (66). Each L-shaped sliding block (66) is fixedly fitted with a clamping plate (67). Each L-shaped sliding block (66) is fixedly fitted with a mounting ear (68) on its bottom surface. The rotating shaft (61) is fixedly fitted with a mounting ear (610) on the side wall of one end near the mounting ear (68). The mounting ear (68) and the mounting ear (610) are movably connected by a connecting shaft (69).

4. The electric wire stripper according to claim 2, characterized in that: The second jacking mechanism (7) includes an L-shaped top plate (71) fixedly installed on the top surface of the second fixed plate (52). A pair of positioning rods (72) are fixedly installed on the side wall of the L-shaped top plate (71) facing the wire stripping assembly (8). The wire stripping assembly (8) is slidably mounted on the two positioning rods (72). A second stepper motor (73) is fixedly installed on one outer wall of the second fixed plate (52). Active gears are rotatably installed on the side wall of the L-shaped top plate (71) facing the first tapered block (56). The second gear (74) and the driven gear (76) are meshed together. The second gear (74) and the driven gear (76) are fixedly connected to the output shaft of the second stepper motor (73) through a transmission shaft (75). The second driven gear (76) is fixedly mounted with a lead screw (77) on the side wall facing the wire stripping assembly (8). The second fixing plate (52) and the L-shaped top plate (71) are fixedly connected through a pair of reinforcing rods (79).

5. An electric wire stripper according to claim 4, characterized in that: The wire stripping assembly (8) includes a mounting box (81) slidably mounted on a positioning rod (72). The side wall of the mounting box (81) is fixedly connected to the output end of the electric push rod (10). A groove (82) is provided on the bottom surface of the inner cavity of the mounting box (81). A tapered block (78) is slidably mounted inside the groove (82), and the tapered block (78) is threadedly connected to the lead screw (77). A pair of limiting posts (83) are also symmetrically fixedly mounted on the bottom surface of the inner cavity of the mounting box (81). A swing arm (84) is rotatably mounted on each limiting post (83). Each swing arm (84) is elastically connected to the mounting box (81) through a torsion spring (85). A wire cutting assembly (86) is connected to the end of each swing arm (84) away from the limiting post (83).

6. An electric wire stripper according to claim 5, characterized in that: The swing arm (84) includes an arm body (841), and a relief groove (842) is provided at one end of the arm body (841) away from the limiting post (83).

7. An electric wire stripper according to claim 6, characterized in that: The tangent assembly (86) includes a slide plate (861) embedded and slidably installed in the inner cavity of the mounting box (81). A mounting ear (863) is fixedly installed on the side wall of the slide plate (861). A column (864) is fixedly installed on the top surface of the mounting ear (863). The column (864) is slidably disposed in the inner cavity of the relief groove (842). A screw (865) is threadedly connected to the side wall of the slide plate (861). A mounting plate (866) is fixedly installed on the screw (865). A connector (867) is rotatably installed on the side wall of the mounting plate (866). A cutter (862) is slidably installed inside the slide plate (861). The cutter (862) and the connector (867) are elastically connected by a spring (868).

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