Peeling and wire twisting mechanism

Abstract

The utility model discloses a peeling and wire twisting mechanism, which comprises a rack, a driving assembly and a working assembly, the driving assembly is fixed on the rack and comprises a linear motor, a rotating motor and a gear set, the gear set at least comprises a first gear and a second gear, the linear motor and the rotating motor are fixed on the rack, and the working assembly is fixed on the rack. The first gear is rotationally arranged on one side of the rack, and the second gear is fixed to an output shaft of the rotating motor and engaged with the first gear; the working assembly is used for stripping an insulating layer and twisting a wire, is connected to the first gear and can rotate along with the first gear, the working assembly at least comprises a working arm group, and each working arm group comprises a first working arm and a second working arm which are oppositely arranged on the two axial sides of the first gear; the two working arms can be driven by the linear motor to get close to or away from each other and are provided with a blade and a clamping block respectively. The peeling and wire twisting mechanism is driven by a gear, so that the conditions of belt slipping or breakage and the like in a belt driving mode are avoided, the stability is higher, and the service life is longer.

Description

Technical Field

[0001] The utility model belongs to the technical field of electrical equipment, and in particular relates to an improved stripping and twisting wire mechanism. Background Art

[0002] Terminals are commonly used components in electrical connections. In electrical engineering, terminals mostly refer to wiring terminals, also called wiring terminals. They can be divided into single-hole, double-hole, socket, hook, etc. by type, and can be divided into copper-plated silver, copper-plated zinc, copper, aluminum, iron, etc. by material. Their main function is to transmit electrical signals or conduct electricity. Terminals must be used when signal lines are connected to other devices, otherwise the signal lines cannot be connected to other devices or communicated. The terminal press uses a pressure head tool to fix the terminal to be installed and the signal line, and then applies a squeezing force to the terminal to be installed, so that the terminal to be installed is tightly sleeved at the end of the signal line. In the terminal machine, the stripping and twisting mechanism is the core component, which is used to remove the insulation layer at the end of the wire, and then twist the wire bundle into a single strand of wire for easy crimping of the terminal. In the prior art, the stripping and twisting mechanism is mostly driven by a belt, the operation process is relatively rough, and the cutting blade is mostly a lever structure, which has the risk of incomplete stripping or cutting part of the wire bundle.

[0003] Therefore, in view of the above technical problems, it is necessary to provide an improved stripping and twisting wire mechanism to solve the above problems.

[0004] The information disclosed in this background technology section is only intended to increase the understanding of the overall background of the present invention, and should not be regarded as acknowledging or suggesting in any form that the information constitutes the prior art already known to a person skilled in the art. Utility Model Content

[0005] The utility model aims to provide a stripping and twisting wire mechanism for improving the success rate of stripping and twisting wire operations.

[0006] In order to achieve the above purpose, the technical solution provided by a specific embodiment of the utility model is as follows:

[0007] The utility model provides a wire stripping and twisting mechanism, comprising a frame, a driving component and a working component, wherein the driving component is fixed to the frame, and comprises a linear motor, a rotary motor and a gear set, the gear set comprises at least a first gear and a second gear, the linear motor and the rotary motor are fixed to the frame, the first gear is rotatably arranged on one side of the frame, the second gear is fixed to the output shaft of the rotary motor and meshes with the first gear; a working component is used to strip off the insulation layer and twist the wire, the working component is connected to the first gear and can rotate with the first gear, the working component comprises at least a working arm group, each of the working arm groups comprises a first working arm and a second working arm, the first working arm and the second working arm are relatively arranged on both sides of the axial direction of the first gear, and can be driven by the linear motor to approach or move away from each other, the first working arm is provided with a first blade facing the second working arm, and a first clamping block located between the first blade and the frame, and the second working arm is provided with a second blade and a second clamping block respectively matched with the first blade and the first clamping block.

[0008] In one or more embodiments of the present invention, the diameter of the first gear is greater than the diameter of the second gear.

[0009] In one or more embodiments of the present utility model, the first working arm includes a first accommodating groove, and a first guide groove and a second guide groove that are relatively arranged and connected to the accommodating groove, the first guide groove and the second guide groove are parallel and extend along the first direction, the second working arm includes a second accommodating groove, and a third guide groove and a fourth guide groove that are connected to the second accommodating groove, the third guide groove and the fourth guide groove are parallel and extend along the second direction, the first direction and the second direction extend from the axial direction of the first gear to both sides respectively, and the first direction and the second direction have the same angle with the axial direction of the first gear, the working component also includes a connecting arm, the connecting arm includes a first driving arm and a second driving arm that extend into the first accommodating groove and the second accommodating groove respectively, the ends of the first driving arm and the second driving arm are respectively provided with a first hole and a second hole, the first guide groove, the second guide groove and the first hole are provided with a first guide column, the third guide groove, the fourth guide groove and the second hole are provided with a second guide column, the linear motor acts on and drives the connecting arm to move along the axial direction of the first gear.

[0010] In one or more embodiments of the present utility model, a bearing is provided on the frame, and the working component also includes a main shaft fixed to the inner ring of the bearing, the main shaft includes a first shaft body extending along the axis of the first gear, the first shaft body includes a first limiting groove and a second limiting groove, the first working arm and the second working arm are respectively limited in the first limiting groove and the second limiting groove and can approach or move away from each other.

[0011] In one or more embodiments of the present utility model, the main shaft also includes a second shaft body fixed to the inner ring of the bearing, and the second shaft body is provided with a third limiting groove and a fourth limiting groove respectively connected to the first limiting groove and the second limiting groove, and the first driving arm and the second driving arm are respectively limited to the third limiting groove and the fourth limiting groove.

[0012] In one or more embodiments of the present utility model, the first limit groove and the second limit groove are respectively provided with a first limit strip and a second limit strip at both ends, and the first limit strip and the second limit strip extend along the moving direction of the first working arm or the second working arm, and the first working arm is provided with a first groove body and a second groove body corresponding to the first limit strip and the second limit strip at both ends of the first limit groove, and the second working arm is provided with a third groove body and a fourth groove body corresponding to the first limit strip and the second limit strip at both ends of the second limit groove.

[0013] In one or more embodiments of the present invention, the connecting arm is provided with a channel coaxial with the first gear, and the main shaft includes a third shaft extending in the channel.

[0014] In one or more embodiments of the present invention, the frame includes a first fixing plate and a second fixing plate that are arranged opposite to each other, the bearing and the first gear are connected to the first fixing plate, and the linear motor is fixed to the second fixing plate.

[0015] In one or more embodiments of the present utility model, a first support rod and a second support rod arranged in parallel are connected between the first fixed plate and the second fixed plate, a movable movable plate is sleeved on the first support rod and the second support rod, the linear motor acts on the movable plate, the connecting arm is provided with an annular groove coaxial with the first gear, a first pulley and a second pulley limitedly located in the annular groove are provided on the movable plate, the rotation direction of the first pulley and the second pulley is perpendicular to the rotation direction of the annular groove, and / or the frame includes a third fixed plate fixed on the first fixed plate, and the rotating motor is fixed to the third fixed plate.

[0016] In one or more embodiments of the present invention, a dust cover is provided on a side of the first gear facing the first blade, and a diameter of the dust cover is greater than a diameter of the first gear.

[0017] Compared with the prior art, the stripping and twisting mechanism in the utility model adopts a gear drive mode, which makes the processing and adjustment more delicate, and at the same time avoids the slippage or breakage of the belt in the belt drive mode, and has higher stability and longer service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 It is a schematic diagram of a stripping and twisting wire mechanism in one embodiment of the utility model;

[0020] Figure 2 It is a schematic diagram of another angle of the stripping and twisting mechanism in one embodiment of the utility model;

[0021] Figure 3 It is a schematic diagram of a frame in one embodiment of the utility model.

[0022] Figure 4 This is a disassembled diagram of a frame in one embodiment of the utility model;

[0023] Figure 5 This is a disassembled view of the frame at another angle in one embodiment of the utility model;

[0024] Figure 6 This is a schematic diagram of a driving assembly in one embodiment of the utility model;

[0025] Figure 7 This is a schematic diagram of a working component in one embodiment of the utility model;

[0026] Figure 8 This is a disassembled diagram of a working component in one embodiment of the utility model;

[0027] Fig. 9 This is a disassembled view of the working components in one embodiment of the utility model from another angle.

[0028] Fig.10 It is a schematic diagram of the main shaft in one embodiment of the utility model;

[0029] Fig.11 A side view of a main shaft in one embodiment of the utility model;

[0030] Fig.12 This is a schematic diagram of a connecting arm in one embodiment of the utility model;

[0031] Fig.13 It is a schematic diagram of the first working arm / the second working arm in one embodiment of the utility model.

[0032] Description of main reference numerals:

[0033] 100-stripping and twisting mechanism, 10-frame, 11-first fixed plate, 12-second fixed plate, 13-third fixed plate, 14-bearing, 15-moving plate, 151-first guide wheel, 152-second guide wheel, 16-support rod, 20-driving assembly, 21-first gear, 211-positioning groove, 22-second gear, 23-rotating motor, 24-linear motor, 25-dust cover, 30-working assembly, 31-first working arm, 311-first slot body, 312-second slot body, 313-first receiving slot, 314-first guide slot, 315-second guide slot, 32-second working arm, 321-third slot body, 322-fourth slot body, 323-second receiving slot, 32 4-third guide groove, 325-fourth guide groove, 33-connecting arm, 331-first driving arm, 332-second driving arm, 333-first hole, 334-second hole, 335-annular groove, 336-first channel, 34-first guide column, 35-second guide column, 36-main shaft, 361-first shaft body, 3611-positioning column, 3612-first limiting groove, 3613-second limiting groove, 362-second shaft body, 3621-third limiting groove, 3622-fourth limiting groove, 363-third shaft body, 364-second channel, 365-positioning rod, 366-fixed plate, 371-first blade, 372-first clamping block, 373-second blade, 374-second clamping block. DETAILED DESCRIPTION

[0034] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0035] like Figure 1-13As shown, the stripping and twisting mechanism 100 in one embodiment of the utility model includes a frame 10, a driving assembly 20 and a working assembly 30, wherein the frame 10 provides a mounting platform for the driving assembly 20 and the working assembly 30, the working assembly 30 is used to strip the insulation layer and twist the internal wire bundle to prevent a single or multiple wires from warping, and the driving assembly 20 is used to drive the working assembly 30 to work. The driving assembly 20 includes a gear set, a rotary motor 23 and a linear motor 24, wherein the gear set includes at least two gears, a first gear 21 and a second gear 22, the first gear 21 is rotatably arranged on the frame 10, the second gear 22 is arranged on the output shaft of the rotary motor 23 and meshes with the first gear 21, and the rotary motor 23 can drive the second gear 22 and drive the first gear 21 to rotate. The working assembly 30 includes at least one working arm group, each working arm group includes a first working arm 31 and a second working arm 32, which are connected to and relatively arranged on both sides of the axial direction of the first gear 21, and are respectively fixed with a first blade 371 and a second blade 373 at the end, and a first clamp block 372 and a second clamp block 374 are respectively fixed at the rear end of the blade. The linear motor 24 is fixed on the frame 10, and acts on the first working arm 31 and the second working arm 32 to move closer to or away from each other.

[0036] During operation, the end of the wire to be crimped penetrates between the first clamp block 372 and the second clamp block 374, and the linear motor 24 drives the first working arm 31 and the second working arm 32 to approach each other, so that the first blade 371 and the second blade 373 cut into the insulation layer of the wire, and the first clamp block 372 and the second clamp block 374 clamp the insulation layer at the end of the wire. At the same time, the rotary motor 23 drives the second gear 22 and drives the first gear 21 to rotate, at which time the first working arm 31 and the second working arm 32 rotate accordingly, the first blade 371 and the second blade 373 rotate in coordination and cut the insulation layer, the first clamp block 372 and the second clamp block 374 cooperate to clamp the insulation layer, and the two twist the internal wire bundle into a single bundle while rotating to prevent a single or multiple wires from standing up and affecting the crimping of the rear-end terminal.

[0037] Due to the use of gear-driven rotation, compared with the traditional belt-driven method, the risk of peeling failure caused by belt slippage is avoided, and the rotation and adjustment of the working arm are more delicate; at the same time, the gear-driven working method is more stable, avoiding the situation where the belt is broken and the work is interrupted due to replacement, thereby improving production efficiency and stability.

[0038] In this embodiment, the first blade 371 has two blades that are at a certain angle (such as 90 degrees) to each other, and the same is true for the second blade 373. Compared with a single straight blade, the double-blade structure can increase the contact area with the insulating layer, and the cooperation of the double blades can improve the cutting effect, and can achieve a predetermined cutting effect with a relatively small number of rotations. Therefore, the number of terminal crimpings can be increased in the same time (especially during a long period of uninterrupted work), thereby improving production efficiency.

[0039] Preferably, the diameter of the second gear 22 is smaller than that of the first gear 21, so this embodiment adopts a differential structure in which a small gear drags a large gear. When the second gear 22 rotates one circle, it only drives the first gear 21 to rotate a certain angle, so the rotation speed of the first gear 21 can be adjusted more delicately, and then the optimal stripping speed when the same wire is used and different wires are replaced can be adjusted and confirmed, which is more flexible. Of course, the specific number of gears can be increased according to the fixed position of the rotating motor 23, the distance between the rotating motor 23 and the working component 30, the internal space limitation of the terminal machine, etc., and this embodiment does not limit it.

[0040] Specifically, the first working arm 31 includes a first receiving groove 313, and a first guide groove 314 and a second guide groove 315 provided at the upper and lower sides of the first receiving groove 313, and the two guide grooves are parallel to each other and extend along the first direction. Similarly, the second working arm 32 is provided with a second receiving groove 323, and a third guide groove 324 and a fourth guide groove 325 provided in parallel along the second direction. The working assembly 30 also includes a connecting arm 33 connected to the linear motor 24, which has a first driving arm 331 and a second driving arm 332 extending into the first receiving groove 313 and the second receiving groove 323 respectively, and a first hole 333 and a second hole 334 are provided at the ends of the two driving arms respectively, and a first guide column 34 and a second guide column 35 are provided in the first guide groove 314, the first hole 333 and the second guide groove 315, and in the third guide groove 324, the second hole 334 and the fourth guide groove 325 respectively. In this embodiment, the first direction and the second direction point to the two sides of the axis of the first gear 21 respectively, and the angles between the two and the axis of the first gear 21 are the same. Therefore, the connecting arm 33 moves toward the front end (blade direction) under the action of the linear motor 24, and the first working arm 31 and the second working arm 32 approach each other under the cooperation of their respective guide grooves and guide columns, and the blades and clamps of the two approach each other at the same time to complete the cutting and clamping of the insulating layer respectively.

[0041] Traditional stripping and twisting mechanisms all use the lever principle, that is, the blade and the drive device are respectively arranged at the two ends of the lever, and the stripping is performed by the movement of the lever. This method is essentially a partial circular motion, especially at the tip of the blade far away from the support point of the lever, and its movement is not translation but with angle change. This phenomenon may cause incomplete stripping, incomplete detachment of the insulation layer leading to pulling, or excessive cutting causing part of the wire bundle to be cut at the same time when replacing wires with different diameters and insulation thicknesses. In this embodiment, the stripping and twisting mechanism 100 adopts an oblique wedge movement method (through the cooperation of holes, guide grooves and guide columns), and the blade moves in a translational manner without angle change, so the movement process is more linear and the control accuracy is higher.

[0042] like Figure 5 As shown, the frame 10 includes a first fixing plate 11, a second fixing plate 12 and a third fixing plate 13. A hole is opened on the first fixing plate 11, and a bearing 14 is arranged in the hole, and its outer ring is fixed in the hole. The working assembly 30 includes a main shaft 36, which is fixed to the inner ring of the bearing 14. The front end of the main shaft 36 is a first shaft body 361, and the first gear 21 is opened and sleeved on the first shaft body 361. Two pairs of positioning grooves 211 are opened on the first gear 21, and corresponding positioning columns 3611 that can be respectively inserted into the positioning grooves 211 at both ends are arranged on the first shaft body 361, so that the main shaft 36 and the first gear 21 can remain relatively stationary and rotate with it.

[0043] like Figure 8-10 As shown, a cross-shaped groove is dug in the middle of the first shaft body 361, and the groove divides the surface of the first shaft body 361 into four identical parts. The first working arm 31 is set in the gap between two adjacent parts, and the second working arm 32 is set in the gap between the other two adjacent parts. The gaps where the first working arm 31 and the second working arm 32 are located are the first limiting groove 3612 and the second limiting groove 3613 respectively. In this embodiment, the width of each limiting groove is the same as the thickness of the working arm, so the two working arms will not shake, and the flexibility is higher. Preferably, the first groove 311 and the second groove 312 are formed at both ends of the first working arm 31, respectively, and the third groove 321 and the fourth groove 322 are also formed at both ends of the second working arm 32. A fixing plate 366 is fixed to each first shaft body 361 part, and the fixing plates 366 at both ends of the first limiting groove 3612 protrude into the first groove body 311 and the second groove body 312 respectively. Similarly, the fixing plates 366 at both ends of the second limiting groove 3613 protrude into the third groove body 321 and the fourth groove body 322 respectively. The parts of the fixing plates 366 protruding into the first groove body 311 and the second groove body 312 respectively constitute the first limiting strip and the second limiting strip, which are used to further ensure the moving direction of the first working arm 31 and the second working arm 32 and improve the stability of the two working arms when moving.

[0044] The part of the main shaft 36 fixed to the inner ring of the bearing 14 is the second shaft body 362, and a third limiting groove 3621 connected to the first limiting groove 3612 and a fourth limiting groove 3622 connected to the second limiting groove 2613 are provided on the second shaft body 362. The thickness of the third limiting groove 3621, the fourth limiting groove 3622 and the first driving arm 331, the second driving arm 332 are the same, so the first driving arm 331 and the second driving arm 332 are respectively limited in the third limiting groove 3612 and the fourth limiting groove 3622, and the two will not shake, and can only extend along the extension direction of their respective corresponding limiting grooves to the first accommodating groove 313 and the second accommodating groove 323, so they have higher stability.

[0045] It is easy to imagine that since the cross-shaped groove divides the front end of the main shaft 36 into four equal parts, in addition to the above-mentioned first working arm 31 and the second working arm 32, additional working arms can be further arranged in the remaining two gaps to increase the number of blades and clamps and improve the stripping and twisting effect.

[0046] Preferably, the connecting arm 33 includes an annular groove 335, and the frame 10 also includes a movable plate 15, which is sleeved on two support rods 16 connected between the first fixed plate 11 and the second fixed plate 12, and can move between the first fixed plate 11 and the second fixed plate 12 along the two support rods. The first guide wheel 151 and the second guide wheel 152 are fixed on the movable plate 15, both of which are located between the annular groove 335. The linear motor 24 acts on the movable plate 15 to move it forward and backward. Since the rotation direction of the two guide wheels is perpendicular to the rotation direction of the annular groove 335 (i.e., the rotation direction of the main shaft 36 and the connecting arm 33), the forward and backward movement of the connecting arm 33 and its own rotation will not interfere with each other, and the stability is high.

[0047] In this embodiment, the connecting arm 33 is provided with a first channel 336 at the position of the annular groove 335, which is coaxial with the first gear 21 and the main shaft 36, and the main shaft 36 also includes a third shaft body 363 extending into the first channel 336, so the connecting arm 33 is sleeved on the main shaft 36, and the first driving arm 331 and the second driving arm 332 are simultaneously limited by the third limiting groove 3621 and the fourth limiting groove 3622 on the second shaft body 362, so the overall stability is higher.

[0048] Preferably, the main shaft 36 is provided with a second channel 364 on its central axis, and a positioning rod 365 is arranged in the second channel 364. The positioning rod 365 extends forward to the first clamp block 372 and the second clamp block 374, and is used to determine the stripping position of the wire to prevent the wire from being too deep and causing the stripping distance to be too large, and the wire bundle is exposed too long to affect the rear-end crimping operation.

[0049] In this embodiment, the rotating motor 23 is fixed on the third fixed plate 13, and a dust cover 25 is provided on the first gear 21. The dust cover 25 is arranged at the front end of the first gear 21 and has a diameter larger than the first gear 21. The dust cover 25 is used to prevent foreign matter from entering between the first gear 21 and the second gear 22.

[0050] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0051] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A wire stripping and twisting mechanism, characterized in that: include: frame; A driving assembly is fixed to the frame, comprising a linear motor, a rotary motor and a gear set, wherein the gear set comprises at least a first gear and a second gear, the linear motor and the rotary motor are fixed to the frame, the first gear is rotatably arranged on one side of the frame, and the second gear is fixed to the output shaft of the rotary motor and meshes with the first gear; A working component is used to strip off the insulation layer and twist the wires. The working component is connected to the first gear and can rotate with the first gear. The working component includes at least one working arm group. Each of the working arm groups includes a first working arm and a second working arm. The first working arm and the second working arm are relatively arranged on both sides of the axial direction of the first gear, and can be driven by the linear motor to approach or move away from each other. The first working arm is provided with a first blade facing the second working arm, and a first clamping block located between the first blade and the frame. The second working arm is provided with a second blade and a second clamping block respectively matching the first blade and the first clamping block.

2. The stripping and twisting mechanism according to claim 1, characterized in that: A diameter of the first gear is greater than a diameter of the second gear.

3. The stripping and twisting mechanism according to claim 1, characterized in that: The first working arm includes a first accommodating groove, and a first guide groove and a second guide groove that are relatively arranged and connected to the accommodating groove, the first guide groove and the second guide groove are parallel and extend along the first direction, the second working arm includes a second accommodating groove, and a third guide groove and a fourth guide groove that are connected to the second accommodating groove, the third guide groove and the fourth guide groove are parallel and extend along the second direction, the first direction and the second direction extend to both sides from the axial direction of the first gear respectively, and the first direction and the second direction have the same angle with the axial direction of the first gear, the working component also includes a connecting arm, the connecting arm includes a first driving arm and a second driving arm that extend into the first accommodating groove and the second accommodating groove respectively, the ends of the first driving arm and the second driving arm are respectively provided with a first hole and a second hole, the first guide groove, the second guide groove and the first hole are provided with a first guide column, the third guide groove, the fourth guide groove and the second hole are provided with a second guide column, the linear motor acts on and drives the connecting arm to move along the axial direction of the first gear.

4. The stripping and twisting mechanism according to claim 3, characterized in that: A bearing is arranged on the frame, and the working component also includes a main shaft fixed to the inner ring of the bearing, the main shaft includes a first shaft body extending along the axial direction of the first gear, the first shaft body includes a first limiting groove and a second limiting groove, the first working arm and the second working arm are respectively limited in the first limiting groove and the second limiting groove and can approach or move away from each other.

5. The stripping and twisting mechanism according to claim 4, characterized in that: The main shaft also includes a second shaft body fixed to the inner ring of the bearing, and the second shaft body is provided with a third limiting groove and a fourth limiting groove respectively connected to the first limiting groove and the second limiting groove, and the first driving arm and the second driving arm are respectively limited in the third limiting groove and the fourth limiting groove.

6. The stripping and twisting mechanism according to claim 4, characterized in that: The first and second limit strips are respectively arranged at the two ends of the first limit slot and the second limit slot, and the first and second limit strips extend along the moving direction of the first working arm or the second working arm. The first working arm is provided with a first slot body and a second slot body corresponding to the first and second limit strips at the two ends of the first limit slot, and the second working arm is provided with a third slot body and a fourth slot body corresponding to the first and second limit strips at the two ends of the second limit slot.

7. The wire stripping and twisting mechanism according to claim 4, characterized in that: The connecting arm defines a channel coaxial with the first gear, and the main shaft includes a third shaft extending into the channel.

8. The wire stripping and twisting mechanism according to claim 4, characterized in that: The frame includes a first fixing plate and a second fixing plate that are arranged opposite to each other, the bearing and the first gear are connected to the first fixing plate, and the linear motor is fixed to the second fixing plate.

9. The wire stripping and twisting mechanism according to claim 8, characterized in that: A first support rod and a second support rod arranged in parallel are connected between the first fixed plate and the second fixed plate, a movable movable plate is sleeved on the first support rod and the second support rod, the linear motor acts on the movable plate, the connecting arm is provided with an annular groove coaxial with the first gear, a first pulley and a second pulley limitedly located in the annular groove are provided on the movable plate, the rotation direction of the first pulley and the second pulley is perpendicular to the rotation direction of the annular groove, and / or the frame includes a third fixed plate fixed on the first fixed plate, and the rotating motor is fixed to the third fixed plate.

10. The wire stripping and twisting mechanism according to claim 1, characterized in that: A dust cover is provided on a side of the first gear facing the first blade, and a diameter of the dust cover is larger than a diameter of the first gear.

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