A wire stripper for stripping the middle wire insulation

Abstract

The present invention discloses a wire stripper for stripping the middle wire insulation, belonging to the technical field of wire strippers; it includes a first pliers arm and a second pliers arm that are hinged to each other. Two wire pressing components are arranged oppositely on the first pliers arm. A circumferential wire cutting component is arranged on the wire pressing component, and a longitudinal wire cutting component is arranged between the two wire pressing components; the wire pressing component is used for clamping the wire; the circumferential wire cutting component is used for cutting the wire insulation; the longitudinal wire cutting component is used for horizontally cutting the wire insulation. The present invention can strip the middle wire insulation of the wire at one time.

Description

Technical Field

[0001] The invention relates to the technical field of wire strippers, in particular to a wire stripper used for stripping a middle wire. Background Art

[0002] Wire strippers are one of the common tools used by electricians in the field, motor repair, and instrumentation. They are used by electricians to strip the surface insulation layer of the wire head. Traditional wire strippers can only strip the ends of the wires, remove the insulation layer at the ends of the wires, and facilitate the connection of the ends of the wires to other parts. However, in many scenarios, it is necessary to strip the middle part of the wire to form a "three-way" connection structure.

[0003] The invention with the publication number CN212162620U discloses a wire stripping pliers for completing the wire stripping of the middle part of a cable at one time, which comprises: two pliers bodies, the pliers bodies comprise pliers heads, the bottom of the pliers heads are provided with an annular connector, the bottom of the annular connector is provided with a pliers handle, the two pliers bodies are hinged at their respective annular connectors through a pin shaft, the inner side of the pliers heads are provided with a plurality of wire stripping openings, the wire stripping openings comprise a semicircular wire groove, both ends of the wire groove are provided with a semicircular longitudinal blade edge, and a transverse blade edge is provided between the two longitudinal blade edges. The inner diameters of the longitudinal blade edges on the plurality of wire stripping openings are different.

[0004] The existing wire stripping pliers capable of stripping the insulation skin of the middle part of the wire can only strip a short insulation layer, and it is difficult to process wires with different insulation skin thicknesses, and the application scope is relatively narrow. Summary of the invention

[0005] In view of this, it is necessary to provide a wire stripper for stripping the middle wire sheath, so as to solve the problem that the existing wire stripper is inconvenient to strip the middle wire sheath.

[0006] The present invention provides a wire stripping pliers for stripping the intermediate wire, comprising a first pliers arm and a second pliers arm hinged to each other, the first pliers arm is provided with two wire pressing assemblies arranged opposite to each other, the wire pressing assemblies are provided with a circumferential wire cutting assembly, and a longitudinal wire cutting assembly is provided between the two wire pressing assemblies;

[0007] The crimping assembly comprises two crimping pliers plates hinged to each other and a first transmission unit, one of the crimping pliers plates is connected to the first clamp arm, and the other crimping pliers plate is connected to the second clamp arm via the first transmission unit, and the first transmission unit can convert the relative rotation of the second clamp arm into the relative rotation of the first clamp arm;

[0008] The circumferential cutting line assembly includes a rotating cutter body and a second transmission unit. The rotating cutter body is movably connected to the two wire pressing pliers respectively. The two rotating cutter bodies are arranged opposite to the wire. The wire pressing pliers can drive the rotating cutter body to cut into the wire sheath. The rotating cutter body is connected to the second pliers arm via the second transmission unit. The second transmission unit can convert the relative rotation of the second pliers arm into the relative rotation of the rotating cutter body;

[0009] The longitudinal cutting line assembly includes a retractable cross cutter and a third transmission unit. The cross cutter is connected to the second pliers arm via the third transmission unit. The third transmission unit can convert the relative rotation of the second pliers arm into the linear movement of the cross cutter.

[0010] Further, a motion conversion structure is provided at one end of the second pliers arm close to the wire pressing assembly. The motion conversion structure includes a transmission gear ring and a sliding rack. The transmission gear ring is fixedly connected to the second pliers arm. The sliding rack is slidably connected to the first pliers arm. The transmission gear ring is meshed with the sliding rack; the motion conversion structure is respectively included in the first transmission unit, the second transmission unit and the third transmission unit.

[0011] Further, the first transmission unit further includes a transmission frame and a trapezoidal part. One side of the transmission frame is connected to the two wire pressing assemblies respectively. The transmission frame is connected to the wire pressing pliers located above; the trapezoidal part is fixedly connected to the sliding rack. The other side of the transmission frame abuts against the trapezoidal part. The trapezoidal part can change the distance between the transmission frame and the first pliers arm to expand or contract the clamping space of the wire pressing assembly.

[0012] Further, the circumferential cutting line assembly further includes rotating cutter sleeves. The two rotating cutter sleeves are respectively arranged on the two hinged wire pressing pliers. The rotating cutter sleeves are fixedly connected to the inner sides of the wire pressing pliers. An annular groove for installing the rotating cutter body is provided inside the rotating cutter sleeves. The rotating cutter body is slidably connected to the annular groove.

[0013] Further, the second transmission unit further includes a telescopic rod and a protruding part. The telescopic rod is inserted into one of the rotating cutter sleeves and is slidably connected to the rotating cutter sleeve. Transverse teeth are provided on the telescopic rod. Tooth gears are provided on the outer circumferential surface of the rotating cutter body. The tooth gears are meshed with the transverse teeth; the protruding part is fixedly connected to the sliding rack. The protruding part is arranged opposite to the end of the telescopic rod. The protruding part can drive the rotating cutter body to rotate by pushing the telescopic rod to move. An elastic member is sleeved on the telescopic rod. The elastic member can drive the telescopic rod to reset.

[0014] Further, the cross-cutting knife includes a knife body and a knife head. The knife body is disposed outside the wire and is perpendicularly arranged relative to the first clamping arm. An inclined guide groove adapted to the knife body is provided in the wire pressing clamp plate, and the inclined guide groove can guide the knife body away from the wire.

[0015] Further, the third transmission unit further includes a telescopic sleeve and a movable rod. The telescopic sleeve is connected to the sliding rack. One end of the movable rod is inserted into the telescopic sleeve and is slidably connected to the telescopic sleeve. The movable rod is connected to the telescopic sleeve via an elastic member, and the movable rod is connected to the knife body.

[0016] Further, a wire skin stripping assembly is provided between the two wire pressing assemblies. The wire skin stripping assembly includes a mounting bracket, a traction jaw, and a fourth transmission unit. The traction jaw can automatically clamp the wire. The mounting bracket is connected to one of the wire pressing clamp plates located below. The traction jaw is slidably connected to the mounting bracket. The traction jaw is connected to the transmission gear ring via the fourth transmission unit, and the fourth transmission unit can drive the traction jaw away from the wire.

[0017] Further, the fourth transmission unit includes a rotating column and a traction member. An internal gear ring is provided inside the transmission gear ring. The rotating column is disposed in the internal gear ring and is rotatably connected to the first clamping arm. A gear meshing with the internal gear ring is provided on the rotating column. The rotating column and the traction jaw are connected via the traction member, and the rotating column can wind the traction member to drive the traction jaw to move.

[0018] Further, a tension spring is provided between the first clamping arm and the second clamping arm. The two ends of the tension spring are respectively connected to the first clamping arm and the second clamping arm, and the tension spring can drive the first clamping arm and the second clamping arm to move relatively away from each other.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0020] (1) The wire stripping pliers for stripping the middle wire skin of the present invention are provided with a wire pressing assembly for clamping the wire. The wire pressing assembly includes two mutually hinged wire pressing clamp plates and a first transmission unit. One wire pressing clamp plate is connected to the first clamping arm, and the other wire pressing clamp plate is connected to the second clamping arm via the first transmission unit. The second clamping arm approaches the first clamping arm under the action of human force, and the second clamping arm drives the two hinged wire pressing clamp plates to approach each other through the first transmission unit, so that the wire pressing assembly clamps the wire, and the two ends of the wire can be effectively fixed during the wire stripping process, avoiding the wire from shifting and shaking, which has an adverse impact on the wire stripping process.

[0021] (2) A wire stripper for stripping the middle wire insulation of the present invention is provided with a circumferential wire stripping component for circumferentially cutting the insulation of the wire. The circumferential wire stripping component includes a rotating cutter body and a second transmission unit. The rotating cutter body is movably connected to the two wire pressing pliers respectively. A clamping space for enclosing the wire is formed between the two rotating cutter bodies. The wire pressing pliers can drive the rotating cutter body to cut into the wire insulation. The second plier arm drives the rotating cutter body to rotate through the second transmission unit. The rotating cutter body can cut off the insulation interval between the two rotating cutter bodies, so that the insulation to be stripped is completely separated from the insulation on both sides, facilitating the removal of the insulation from the wire and avoiding the adhesion between the insulations.

[0022] (3) A wire stripper for stripping the middle wire insulation of the present invention is provided with a longitudinal wire stripping component for longitudinally cutting the insulation of the wire. The longitudinal wire stripping component includes a retractable transverse cutter and a third transmission unit. The transverse cutter is connected to the second plier arm through the third transmission unit. The second plier arm moves closer to the first plier arm under the action of human force. The second plier arm drives the transverse cutter to move horizontally through the third transmission unit to longitudinally cut the insulation of the wire. The insulation of the wire is longitudinally cut in the middle, and the insulation can be very easily removed from the wire, completing the stripping of the middle wire insulation of the wire. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The drawings described herein are used to provide a further understanding of the present invention and form a part of this application. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0024] Figure 1 is a three-dimensional structural schematic diagram of the whole of the present invention;

[0025] Figure 2 is a top view structural schematic diagram of the present invention;

[0026] Figure 3 is a connection structural schematic diagram of the wire pressing component, the circumferential wire stripping component and the longitudinal wire stripping component of the present invention;

[0027] Figure 4 is a structural schematic diagram of the circumferential wire stripping component of the present invention;

[0028] Figure 5 is a structural schematic diagram of the longitudinal wire stripping component of the present invention;

[0029] Figure 6 is a structural schematic diagram of the wire insulation stripping component of the present invention;

[0030] In the figure, there are a first clamping arm 100, a second clamping arm 200, a motion conversion structure 210, a transmission gear ring 211, an internal gear ring 211a, a sliding rack 212, a wire pressing assembly 300, a wire pressing pliers plate 310, an inclined guide groove 311, a first transmission unit 320, a transmission frame 321, a trapezoidal part 322, a circumferential cutting line assembly 400, a rotary cutter body 410, a second transmission unit 420, a telescopic rod 421, a convex part 422, a rotary cutter sleeve 430, a longitudinal cutting line assembly 500, a cross cutter 510, a cutter body 511, a cutter head 512, a third transmission unit 520, a telescopic sleeve 521, a movable rod 522, a wire sheath stripping assembly 600, a mounting bracket 610, a traction jaw 620, a fourth transmission unit 630, a rotating column 631, a traction member 632, and a tension spring 700. Detailed implementation manners

[0031] The following will specifically describe the preferred embodiments of the present invention in conjunction with the accompanying drawings. The accompanying drawings form a part of this application and are used together with the embodiments of the present invention to explain the principles of the present invention, rather than to limit the scope of the present invention.

[0032] Please refer to Figures 1 to 6 , a wire stripper for stripping the middle wire sheath in this embodiment includes a first clamping arm 100 and a second clamping arm 200 that are hinged to each other. Two wire pressing assemblies 300 are provided on the first clamping arm 100 and are arranged oppositely. The wire pressing assemblies 300 can open and close and are used for clamping the wire. A circumferential cutting line assembly 400 is provided on the wire pressing assemblies 300. The circumferential cutting line assembly 400 is arranged around the wire and is used for cutting the insulating sheath of the wire. A longitudinal cutting line assembly 500 is provided between the two wire pressing assemblies 300. The longitudinal cutting line assembly 500 can cut the insulating sheath along the axial direction of the wire.

[0033] The wire pressing assembly 300 includes two wire pressing pliers plates 310 that are hinged to each other and a first transmission unit 320. One wire pressing pliers plate 310 is connected to the first clamping arm 100, and the other wire pressing pliers plate 310 is connected to the second clamping arm 200 via the first transmission unit 320. The second clamping arm 200 approaches the first clamping arm 100 under the action of human force. The second clamping arm 200 drives the two hinged wire pressing pliers plates 310 to approach each other through the first transmission unit 320, so that the wire pressing assembly 300 clamps the wire, and the two ends of the wire can be effectively fixed during the wire stripping process to avoid the wire from shifting and shaking, which has an adverse impact on the wire stripping process.

[0034] The circumferential cutting line assembly 400 includes a rotating cutter body 410 and a second transmission unit 420. The rotating cutter body 410 is respectively connected to the two wire pressing pliers 310 and the tension spring 700. A clamping space for enclosing the wire is formed between the two rotating cutter bodies 410. The wire pressing pliers 310 can drive the rotating cutter body 410 to cut into the wire sheath. The second plier arm 200 drives the rotating cutter body 410 to rotate through the second transmission unit 420. The rotating rotating cutter body 410 can cut off the insulation skin interval between the two rotating cutter bodies 410, so that the insulation skin to be peeled is completely separated from the insulation skins on both sides, facilitating the peeling of the insulation skin from the wire and avoiding the adhesion between the insulation skins.

[0035] The longitudinal cutting line assembly 500 includes a retractable cross cutter 510 and a third transmission unit 520. The cross cutter 510 is connected to the second plier arm 200 via the third transmission unit 520. The second plier arm 200 approaches the first plier arm 100 under the action of human force. The second plier arm 200 drives the cross cutter 510 to move laterally through the third transmission unit 520 to laterally cut open the insulation skin of the wire. Both ends of the cut insulation skin are cut off and the middle is cut open, so that the insulation skin can be very easily removed from the wire, completing the peeling of the middle wire skin of the wire.

[0036] Please refer to Figure 2 , at one end of the second plier arm 200 close to the wire pressing assembly 300, there is a motion conversion structure 210. The motion conversion structure 210 includes a transmission gear ring 211 and a sliding rack 212. The transmission gear ring 211 is fan-shaped, and the gear teeth are arranged on the arc surface of the fan shape. The end of the transmission gear ring 211 is fixedly connected to the second plier arm 200. The second plier arm 200 can drive the transmission gear ring 211 to rotate around the hinge joint of the two plier arms. The sliding rack 212 is slidably connected to the first plier arm 100, and the transmission gear ring 211 is meshed with the sliding rack 212. The transmission gear ring 211 can drive the sliding rack 212 to move linearly. The motion conversion structure 210 is respectively included in the first transmission unit 320, the second transmission unit 420 and the third transmission unit 520 and is connected to transmit the motion to the first transmission unit 320, the second transmission unit 420 and the third transmission unit 520.

[0037] In the specific implementation process, there are also various other implementation manners of the motion conversion structure 210. The motion conversion structure 210 may include a slider and a rocker. The slider is connected to the first plier arm 100 through a chute. The two ends of the rocker are respectively connected to the second plier arm 200 and the slider. When the relative rotation occurs at the end of the second plier arm 200, the rocker drives the relative movement of the slider.

[0038] The motion conversion structure 210 may include a square frame and a slider. The slider is connected to the first clamping arm 100 through a chute. A guide post is provided on the slider. The square frame is fixedly connected to the second clamping arm 200. The guide post passes through the square frame to connect the slider. When the second clamping arm 200 rotates relatively at the end, the square frame drives the relative movement of the slider.

[0039] Please refer to Figures 1 to 4 , the first transmission unit 320 further includes a transmission frame 321 and a trapezoidal portion 322. One side of the transmission frame 321 is respectively connected to the two wire pressing components 300. The transmission frame 321 is connected to the wire pressing pliers plate 310 located above. The trapezoidal portion 322 is fixedly connected to the sliding rack 212. The other side of the transmission frame 321 abuts against the trapezoidal portion 322. The transmission frame 321 is in the shape of a tuning fork. Two branch frames on one side of the transmission frame 321 are respectively connected to the two wire pressing pliers plates 310. One branch frame on the other side of the transmission frame 321 abuts against the trapezoidal portion 322. When the sliding rack 212 drives the trapezoidal portion 322 to move, due to the height change on the surface of the trapezoidal portion 322, it will upwardly press the transmission frame 321, causing the transmission frame 321 to drive the wire pressing pliers plate 310 to rotate. The trapezoidal portion 322 can change the distance between the transmission frame 321 and the first clamping arm 100, thereby completing the clamping of the wire.

[0040] During implementation, there are also other implementation manners for the first transmission unit 320. The first transmission unit 320 may include a telescopic column and an inclined slot. A spring is provided inside the telescopic column, which can control one end of the telescopic column to always extend outwards. One end of the telescopic column is connected to the wire pressing pliers plate 310 located above. The other end of the transmission column is hemispherical and inserted into the inclined slot. The inclined slot is opened on the sliding rack 212. During the movement of the sliding rack 212, the inclined slot always abuts against the hemispherical end of the telescopic column, thereby driving the wire pressing component 300 to clamp the wire tightly.

[0041] Please continue to refer to Figures 1 to 4 , the circumferential section component 400 further includes a rotary cutter sleeve 430. The two rotary cutter sleeves 430 are respectively arranged on the two hinged wire pressing pliers plates 310. The rotary cutter sleeve 430 is fixedly connected to the inner side of the wire pressing pliers plate 310. The rotary cutter sleeve 430 is semi-circular. An annular groove for installing the rotary cutter body 410 is provided inside the rotary cutter sleeve 430. The rotary cutter body 410 is slidably connected to the annular groove. During specific implementation, the rotary cutter body 410 is located in the rotary cutter sleeve 430. The cutting edge of the rotary cutter body 410 is arc-shaped. The two rotary cutter bodies 410 approach each other under the drive of the wire pressing pliers plate 310 and cut into the wire insulation. There is still uncut insulation at the interval between the two rotary cutter bodies 410. The second transmission unit 420 can drive the rotary cutter body 410 to rotate, thereby cutting off the connected insulation and completing the circumferential cutting of the wire insulation.

[0042] Please refer to Figure 3 andFigure 4 The second transmission unit 420 includes a telescopic rod 421 and a protrusion 422. The telescopic rod 421 is inserted into the rotating knife sleeve 430 and is slidably connected to the rotating knife sleeve 430. A through hole is provided in the rotating knife sleeve 430, and the through hole is connected to the annular groove. The telescopic rod 421 is provided with a transverse tooth, and the outer circumferential surface of the rotating knife body 410 is provided with a gear tooth, and the gear tooth is meshed with the transverse tooth. When the telescopic rod 421 moves along the through hole, it can drive the rotating knife body 410 to rotate, thereby cutting the insulation skin of the wire.

[0043] As a further embodiment, the protrusion 422 is fixedly connected to the sliding rack 212, and the protrusion is arranged relative to the end of the telescopic rod 421. When the sliding rack 212 drives the protrusion to move, the protrusion pushes up the telescopic rod 421, so that the telescopic rod 421 drives the rotating blade 410 to rotate. In addition, an elastic member is sleeved on the telescopic rod 421, and the elastic member is specifically a spring. One end of the spring is fixed to the middle of the telescopic rod 421, and the other end of the spring is in contact with the rotating blade sleeve 430. The telescopic rod 421 that is pressed and moved can be reset and retracted under the action of the spring after losing the protrusion. At the same time, the end of a rotating blade body 410 that is actively rotating can pass through the gap between the two rotating blade sleeves 430, and press the other rotating blade body 410 that matches it, so that the two rotating blade bodies 410 rotate at the same time. In the specific implementation process, the rotating blade body 410 is embedded in the annular groove, and a limiting column is provided in the middle of the rotating blade body 410. The limiting column, an arc groove is provided inside the rotating blade sleeve 430, and the wire protection groove is arranged relative to the rotation axis of the rotating blade body 410. The limiting column is inserted in the arc groove, and the arc groove can limit the extreme movement position of the limiting column to prevent the rotating blade body 410 from being separated from the rotating blade sleeve 430. As a further embodiment, the driven rotating blade body 410 adopts a method similar to the combination of the telescopic rod 421 and the spring to realize the position recovery of the driven rotating blade body 410. The telescopic rod 421 matched with the driven rotating blade body 410 is arranged at intervals from the sliding rack 212, and the sliding rack 212 does not act on the driven rotating blade body 410.

[0044] The second transmission unit 420 may also have other embodiments, one of which is: the second transmission unit 420 includes a traction rope and a guide wheel, one end of the rotating blade body 410 is connected to the rotating blade sleeve 430 through a spring, one end of the traction rope is connected to the other end of the rotating blade body 410, and the other end of the traction rope is connected to the sliding rack 212. Guided by the guide wheel, the two rotating blade bodies 410 can rotate clockwise or counterclockwise at the same time to cut the insulation skin between the two rotating blade sleeves 430.

[0045] Another implementation is as follows: The second transmission unit 420 includes a traction rope and a rotating shaft. The rotating shaft is rotatably connected to the first clamping arm 100. A torsion spring connects the rotating shaft and the first clamping arm 100. A gear is provided on the rotating shaft, and the gear meshes with the teeth on the rotating cutter body 410. One end of the traction rope is connected to the rotating shaft, and the other end of the traction rope is connected to the sliding rack 212. The traction rope drives the rotating shaft to rotate, cuts the insulating skin between the two rotating cutter sleeves 430, and resets under the action of the torsion spring.

[0046] Please refer to Figure 3 and Figure 5 , the cross-cutting knife 510 includes a knife body 511 and a knife head 512. The knife body 511 is arranged outside the wire and is vertically arranged relative to the first clamping arm 100. The cross-cutting knife 510 can always maintain a tendency to move towards the wire. An inclined guide groove 311 adapted to the knife body 511 is provided in the wire pressing clamp plate 310. When the wire stripping pliers are in the initial position, the wire is placed in the two wire pressing assemblies 300, and the knife body 511 of the cross-cutting knife 510 is located in the inclined guide groove 311 offset from the wire. The knife head 512 is separated from the wire, facilitating the installation of the wire. When the first clamping arm 100 and the second clamping arm 200 rotate relative to each other, the knife body 511 moves along the axial direction of the guide, the knife body 511 disengages from the inclined guide groove 311, and the knife head 512 cuts into the insulating skin, longitudinally cutting the insulating skin of the wire.

[0047] Please refer to Figure 3 , the third transmission unit 520 includes a telescopic sleeve 521 and a movable rod 522. The telescopic sleeve 521 is connected to the sliding rack 212. One end of the movable rod 522 is inserted into the telescopic sleeve 521 and is slidably connected to the telescopic sleeve 521. The movable rod 522 is connected to the telescopic sleeve 521 via an elastic member, and the movable rod 522 is connected to the knife body 511. The telescopic sleeve 521 is driven by the sliding rack 212, and the spring inside the telescopic sleeve 521 provides the power for the cross-cutting knife 510 to move relative to the wire.

[0048] The third transmission unit 520 can also have other implementations. One of the implementations is as follows: The third transmission unit 520 includes a connecting rod. The connecting rod connects the sliding rack 212 and the knife body 511. A sleeve is provided at the end of the knife body 511, and the knife head 512 is inserted into the sleeve. The sleeve is preferably square. A spring is provided between the knife head 512 and the sleeve, and the spring is sleeved on the knife head 512. The spring always drives the knife head 512 to move towards the wire.

[0049] Please refer to Figure 6, a wire skin stripping component 600 is provided between the two wire pressing components 300. The wire skin stripping component 600 includes a mounting bracket 610, a traction jaw 620, and a fourth transmission unit 630. The traction jaw 620 can automatically clamp the wire. Specifically, the traction jaw 620 is a jaw that can automatically close. The mounting bracket 610 is connected to one of the wire pressing jaw plates 310 located below. An opening is reserved between the mounting bracket 610 and the first jaw arm 100 to facilitate the passage of the telescopic sleeve 521 or the connecting rod. The traction jaw 620 is slidably connected to the mounting bracket 610. The traction jaw 620 is connected to the transmission gear ring 211 via the fourth transmission unit 630. The fourth transmission unit 630 can drive the traction jaw 620 to approach the sliding rack 212 to strip the insulating skin of the wire. As a further implementation, the fourth transmission unit 630 includes a rotating column 631 and a traction member 632. An internal gear ring 211a is provided inside the transmission gear ring 211. The rotating column 631 is disposed in the internal gear ring 211a and is rotatably connected to the first jaw arm 100. A gear meshing with the internal gear ring 211a is provided on the rotating column 631. The traction member 632 connects the rotating column 631 and the traction jaw 620. Specifically, the traction member 632 is a traction rope. The rotating column 631 can wind the traction rope to drive the traction jaw 620 to move.

[0050] The fourth transmission unit 630 can also have other implementation manners. One of the implementation manners is that the fourth transmission unit 630 includes a crank and a rocker. The crank is rotatably connected to the rotating column 631. One end of the rocker is hinged to the crank, and the other end of the rocker is hinged to the traction jaw 620. During the rotation of the crank, the traction jaw 620 can be driven to reciprocate via the rocker.

[0051] Another implementation manner is that the fourth transmission unit 630 includes a rack. One end of the rack is fixedly connected to the traction jaw 620. The teeth on the rack are connected to the gear on the rotating column 631. The gear drives the rack to move, thereby driving the traction jaw 620 to reciprocate.

[0052] It should be noted that a through groove is provided on the sliding rack 212, and the traction rope or the rocker can pass through the through groove to avoid interference of the sliding rack 212 with the movement. In addition, a redundant space is provided in the traction jaw 620. Only after the sliding gear moves to the limit position, the end of the traction jaw 620 will act on the insulating skin of the wire.

[0053] Please refer to Figure 1 and Figure 2, a tension spring 700 is provided between the first pliers arm 100 and the second pliers arm 200. The two ends of the tension spring 700 are respectively connected to the first pliers arm 100 and the second pliers arm 200, and the tension spring 700 can drive the first pliers arm 100 and the second pliers arm 200 to move relatively away from each other. In the specific implementation process, connection columns are provided on both the first pliers arm 100 and the second pliers arm 200, and the two ends of the tension spring 700 are respectively installed on the connection columns. When a person squeezes the two pliers arms tightly, the tension spring 700 is stretched. When the person releases the hands, the tension spring 700 drives the two pliers arms to reset, and the recycling use of the wire stripper can be realized.

[0054] Working process: First, insert the wire into the wire pressing assembly 300 and the traction jaw 620. Manually hold the first pliers arm 100 and the second pliers arm 200 tightly. During the sliding process of the sliding gear, first drive the wire pressing jaw plate 310 to press the wire tightly through the transmission frame 321, and the rotary cutter body 410 cuts into the insulating skin of the wire. At the same time, continuously drive the cross cutter 510 to move, and longitudinally cut open the insulating skin of the wire from the middle. During the movement of the sliding gear, the protrusions on the sliding gear successively press against the telescopic rod 421, and the telescopic rod 421 drives the rotary cutter body 410 to rotate, cutting off the insulating skin interval between the two rotary cutter sleeves 430. Finally, the traction jaw 620 removes the cut insulating skin from the wire.

[0055] The above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present invention should be covered by the present invention.

Claims

1. A wire stripper for stripping the middle wire skin, comprising a first pliers arm and a second pliers arm that are hinged to each other. Characterized in that, Two wire pressing components are arranged oppositely on the first pliers arm, a circumferential wire cutting component is arranged on the wire pressing component, and a longitudinal wire cutting component is arranged between the two wire pressing components; The wire pressing component includes two wire pressing pliers plates that are hinged to each other and a first transmission unit. One wire pressing pliers plate is connected to the first pliers arm, and the other wire pressing pliers plate is connected to the second pliers arm via the first transmission unit. The first transmission unit can convert the relative rotation of the second pliers arm into the relative rotation of the first pliers arm; The circumferential wire cutting component includes a rotating knife body and a second transmission unit. The rotating knife bodies are respectively movably connected to the two wire pressing pliers plates. The two rotating knife bodies are arranged opposite to the wire. The wire pressing pliers plate can drive the rotating knife body to cut into the wire skin. The rotating knife body is connected to the second pliers arm via the second transmission unit. The second transmission unit can convert the relative rotation of the second pliers arm into the relative rotation of the rotating knife body; The longitudinal wire cutting component includes a retractable cross-cutting knife and a third transmission unit. The cross-cutting knife is connected to the second pliers arm via the third transmission unit. The third transmission unit can convert the relative rotation of the second pliers arm into the linear movement of the cross-cutting knife; A motion conversion structure is arranged at one end of the second pliers arm close to the wire pressing component. The motion conversion structure includes a transmission gear ring and a sliding rack. The transmission gear ring is fixedly connected to the second pliers arm. The sliding rack is slidably connected to the first pliers arm. The transmission gear ring is meshed with the sliding rack; The motion conversion structure is respectively included in the first transmission unit, the second transmission unit and the third transmission unit; The circumferential wire cutting component further includes a rotating knife sleeve. The two rotating knife sleeves are respectively arranged on the two hinged wire pressing pliers plates. The rotating knife sleeve is fixedly connected to the inner side of the wire pressing pliers plate. An annular groove for installing the rotating knife body is arranged inside the rotating knife sleeve. The rotating knife body is slidably connected to the annular groove; The cross-cutting knife includes a knife body and a knife head. The knife body is arranged outside the wire and is perpendicular to the first pliers arm. An inclined guide groove adapted to the knife body is arranged in the wire pressing pliers plate. The inclined guide groove can guide the knife body away from the wire; The third transmission unit further includes a telescopic sleeve and a movable rod. The telescopic sleeve is connected to the sliding rack. One end of the movable rod is inserted into the telescopic sleeve and is slidably connected to the telescopic sleeve. The movable rod is connected to the telescopic sleeve via an elastic member. The movable rod is connected to the knife body.

2. A wire stripper for stripping the middle wire skin according to claim 1, Characterized in that, The first transmission unit further includes a transmission frame and a trapezoidal portion. One side of the transmission frame is respectively connected to the two wire pressing assemblies, and the transmission frame is connected to the wire pressing pliers plate located above. The trapezoidal portion is fixedly connected to the sliding rack, and the other side of the transmission frame abuts against the trapezoidal portion. The trapezoidal portion can change the distance between the transmission frame and the first pliers arm to expand or contract the clamping space of the wire pressing assembly.

3. The wire stripper for stripping the intermediate wire sheath according to claim 1, wherein, the second transmission unit further includes a telescopic rod and a convex portion. The telescopic rod is inserted into one of the rotary knife sleeves and is slidably connected to the rotary knife sleeve. Transverse teeth are provided on the telescopic rod, and gear teeth are provided on the outer circumferential surface of the rotary knife body. The gear teeth are meshed and connected with the transverse teeth. The convex portion is fixedly connected to the sliding rack, and the convex portion is arranged opposite to the end of the telescopic rod. The convex portion can drive the telescopic rod to move, thereby driving the rotary knife body to rotate. An elastic member is sleeved on the telescopic rod, and the elastic member can drive the telescopic rod to reset.

4. The wire stripper for stripping the intermediate wire sheath according to claim 1, wherein, a wire sheath stripping assembly is provided between the two wire pressing assemblies. The wire sheath stripping assembly includes a mounting bracket, a traction jaw, and a fourth transmission unit. The traction jaw can automatically clamp the wire. The mounting bracket is connected to one of the wire pressing pliers plates located below. The traction jaw is slidably connected to the mounting bracket. The traction jaw is connected to the transmission gear ring via the fourth transmission unit, and the fourth transmission unit can drive the traction jaw away from the wire.

5. The wire stripper for stripping the intermediate wire sheath according to claim 4, wherein, the fourth transmission unit includes a rotating column and a traction member. An internal gear ring is provided inside the transmission gear ring. The rotating column is arranged in the internal gear ring and is rotatably connected to the first pliers arm. A gear meshing with the internal gear ring is provided on the rotating column. The rotating column and the traction jaw are connected via the traction member, and the rotating column can wind the traction member to drive the traction jaw to move.

6. The wire stripper for stripping the intermediate wire sheath according to claim 1, wherein, a tension spring is provided between the first pliers arm and the second pliers arm. Two ends of the tension spring are respectively connected to the first pliers arm and the second pliers arm. The tension spring can drive the first pliers arm and the second pliers arm to move relatively away from each other.

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