CN116052953B

CN116052953B - Automatic wire twisting device for wire and cable processing

Info

Publication number: CN116052953B
Application number: CN202310258414.3A
Authority: CN
Inventors: 孔德庆; 王东启; 杨建廷; 陈井森
Original assignee: Changfeng Wire And Cable Co ltd
Current assignee: Changfeng Wire And Cable Co ltd
Priority date: 2023-03-17
Filing date: 2023-03-17
Publication date: 2023-06-09
Anticipated expiration: 2043-03-17
Also published as: CN116052953A

Abstract

The invention relates to the technical field of cable processing, in particular to an automatic wire twisting device for wire and cable processing; comprising the following steps: a workbench placed on the ground; the upper end surface of the workbench is provided with a rectangular groove, and a support bracket is fixedly arranged in the middle of the rectangular groove; a wire expanding part is arranged in the rectangular groove on the right side of the support bracket in a sliding manner, a wire expanding part is arranged at the upper end of the support bracket, the wire expanding part is matched with the wire expanding part, and a stranded wire part is arranged in the rectangular groove on the left side of the support bracket in a sliding manner; according to the wire harness wire twisting device, the wire harness which is blocked can be outwards expanded and lifted off to release the blocked wires, and in order to keep the wire twisting process continuous and prevent the wires from being broken, the distance between the wire twisting part and the wire tensioning part is shortened by moving the wire tensioning part leftwards to provide the wires for continuing the wire twisting, so that the wire twisting efficiency is effectively ensured.

Description

Automatic wire twisting device for wire and cable processing

Technical Field

The invention relates to the technical field of cable processing, in particular to an automatic wire twisting device for wire and cable processing.

Background

Wire and cable are wire products used to transmit electrical (magnetic) energy, information, and to effect electromagnetic energy conversion. In the production and processing process of the electric wire and the cable, some electric wires and cables are used in an extra-high voltage environment, and the electric wires and the cables pass through the electric wires and the cables in the state with larger current and high voltage, so that the electric wires and the cables are obtained by a stranded wire mode through a plurality of metal wires in the production process of the electric wires and the cables; in the process of magnetic energy transmission or signal transmission, a plurality of wires of the same insulating layer are required to be grouped and mutually twisted together according to a certain density, so that electric waves radiated by the wires in the transmission process are offset by electric waves emitted by another wire, and the degree of signal interference is effectively reduced.

In the twisting process of a plurality of wires, if the wires are thicker, the wires are difficult to twist, so that the twisting density of the twisted cable wires is uncontrollable, and the pitches between the adjacent wires are larger after the adjacent wires are twisted; if the wires are thinner, the wires are easy to break in the twisting process; so that the current stranded wires are stranded according to a specified diameter; however, it should be noted that the wire hole on the wire harness disc matched with the wire with the prescribed diameter is also matched with the diameter of the wire when the wire is stranded, but because the wire has certain flexibility, if the outer wall of the wire is creased or bent when the wire is stranded, the wire is easy to be clamped with the wire hole, so that the stranded wire action is stopped, and further mechanical clamping is generated in the process of stranding the wire; at this time, the threading needs to be re-fixed to continue twisting, so that the twisting efficiency of the wires is seriously affected.

In the prior wire and cable twisting device, in order to prevent mechanical blockage, a wire straightening device is adopted to straighten the wire harness to be twisted in advance in radian, and the inner wall of a threading guide hole is kept smooth, so that the probability of wire harness blockage is reduced; however, the mode still has the defect that the wire harness is easy to deform when the wire harness is corrected by the wire correction device, so that the cross section area of the wire harness is changed; further affecting the rated load of the wire.

Therefore, in order to improve the twisting efficiency of the wires, ensure the twisting quality of the wires and prevent the twisted wire bundles from not meeting the rated requirements, the invention provides an automatic wire twisting device for processing wires and cables.

Disclosure of Invention

In order to solve the technical problems, the invention provides an automatic wire twisting device for processing wires and cables, which comprises: a workbench placed on the ground; the upper end surface of the workbench is provided with a rectangular groove, and a support bracket is fixedly arranged in the middle of the rectangular groove; a guide rod is arranged in the rectangular groove on the right side of the support bracket, a wire tensioning part is slidably arranged in the rectangular groove on the right side of the support bracket, the wire tensioning part is in sliding fit with the guide rod, and a fixed spring is sleeved on the outer wall of the guide rod between the wire tensioning part and the support bracket; one end of the fixed spring is connected with the wire tensioning part, and the other end of the fixed spring is connected with the support bracket; the upper end of the support bracket is provided with a wire expanding part which is matched with the wire expanding part, and a stranded wire part is arranged in the rectangular groove at the left side of the support bracket in a sliding manner; the wire stretching part, the wire expanding part and the wire stranding part are in linkage fit to finish synchronous wire stranding operation.

The wire expanding part comprises a Z-shaped frame vertically arranged at the upper end of the support bracket, a fixed ring is arranged at the upper end of the Z-shaped frame, a plurality of groups of limiting rods are uniformly arranged on the circumferential outer wall of the fixed ring, the number of each group of limiting rods is two, and wire expanding clamping seats are arranged on each group of limiting rods in a sliding manner; the outer wall of the limiting rod is sleeved with a limiting spring, one end of the limiting spring is connected with the outer wall of the wire expanding clamp seat at the corresponding position, and the other end of the limiting spring is connected with the outer wall of the fixed ring; the inside of the fixed ring is of a cavity structure, a plurality of line segments are arranged in the cavity of the fixed ring and jointly connect a plurality of line expansion clamp seats, the limiting springs are in a compressed state, the other ends of the line segments sequentially penetrate through the fixed ring, the Z-shaped frame and the sliding cylinder and then are connected with the baffle plates, the sliding cylinder is arranged on the Z-shaped frame in a sliding fit mode, the outer wall of the sliding cylinder is sleeved with the connecting springs, one ends of the connecting springs are connected with the Z-shaped frame, and the other ends of the connecting springs are connected with the sliding cylinder; the right-hand member of sliding cylinder is provided with the shoulder hole, and the separation blade sets up inside the shoulder hole.

Preferably, the wire tensioning part comprises an L-shaped rod which is arranged in the rectangular groove in a sliding manner, the upper end of the L-shaped rod is connected with a wire through column cylinder, a wire tensioning disc is fixedly arranged on the circumferential outer wall of the wire through column cylinder, drawing grooves are uniformly formed in the circular outer wall of Zhang Xianpan along the annular direction, arc grooves which are in one-to-one correspondence with the wire expanding clamp seats are uniformly formed in the outer wall of Zhang Xianpan along the circumferential direction of the outer wall of the Zhang Xianpan, wire supporting sleeves are arranged in the arc grooves in a sliding manner, a column-shaped rod is arranged on the wire supporting sleeves, an auxiliary spring is sleeved on the outer wall of the column-shaped rod, one end of the auxiliary spring is connected with the wire supporting sleeve, and the other end of the auxiliary spring is connected with the inner wall of the arc grooves; one end of the columnar rod, which is positioned in the annular groove, is movably provided with a ball.

Preferably, the stranded wire part comprises a bracket which is slidably arranged in the rectangular groove, wherein the position of the bracket in the rectangular groove is fixed by a bolt; the upper end of the bracket is provided with an annular sleeve which is formed by two sections and is screwed and fixed through threads; one section is fixedly connected with the upper end of the support, a wire twisting disc is rotatably arranged in the annular sleeve, and movable beads which are in fit contact with the inner wall of the annular sleeve are uniformly arranged on the circumferential side wall of the wire twisting disc.

Preferably, the stranded wire part further comprises a fixed cavity arranged at the top end of the bracket, a motor is arranged in the fixed cavity through a motor seat, and an output shaft of the motor is connected with a gear; the middle part of the wire twisting disc is provided with a through hole, the inner wall of the through hole is provided with a wire sleeve through a bearing, the disc surface of the annular sleeve is uniformly provided with wire winding holes around the circumferential direction of the through hole, and the wire winding holes and the wire sleeve are internally provided with rubber threading sleeves; the circumference outer wall of the winch disc is uniformly provided with clamping teeth, the circumference outer wall of the lower end of the annular sleeve is provided with guide holes communicated with the fixed cavity, and the gears are meshed with the clamping teeth.

Preferably, the wire opening part further comprises a pressing plate which is arranged in the drawing groove in a sliding way, the pressing plate consists of an annular plate and a plurality of right trapezoid blocks, arc grooves matched with balls of the columnar rods are uniformly formed in the inclined surfaces on the right trapezoid blocks, and a threading sleeve made of rubber materials is arranged in the wire passing column tube; the inclined plane of the wire expanding clamp seat is matched with the outer wall of the bottom end of the wire supporting sleeve.

Preferably, the wire stretching part further comprises a connecting rod which is arranged on the vertical section of the L-shaped rod and has a telescopic function, a wire penetrating disc is arranged on the connecting rod, and wire through holes are uniformly formed in the wire penetrating disc.

Preferably, the wire expanding clamp seat is of a wedge type structure, and the outer wall of the upper end of the wire expanding clamp seat is of an arc-shaped concave structure.

Compared with the related art, the automatic wire twisting device for wire and cable processing provided by the embodiment of the invention has the following beneficial effects: 1. according to the invention, the clamped wire harness can be outwards expanded and lifted off by the mutual matching of the wire expanding part and the wire opening part, and in order to keep the wire twisting process continuous and prevent the wire from being broken, the distance between the wire twisting part and the wire opening part is shortened by moving the wire opening part leftwards, so that the wire is provided for continuing to twist the wire.

2. The tension of the wire can be adjusted according to the requirement of the wire by arranging the wire stretching part, the wire stretching part can be matched with the wire stretching part to trigger the wire stretching part when the wire is blocked, and the whole wire can be driven to move left to provide conditions for continuous stranded wires; the stranded wire work is continuously carried out through the wire clamping guarantee; the whole process is carried out under the condition of keeping the continuous work of the stranded wire, so that the efficiency of the stranded wire is effectively ensured.

Drawings

Fig. 1 is a schematic view of a first position structure of the present invention.

Fig. 2 is a cross-sectional view of a stranded wire portion of the present invention.

Fig. 3 is a schematic view of a second position structure of the present invention.

Fig. 4 is a cross-sectional view of the wire expanding portion of the present invention.

Fig. 5 is a cross-sectional view of the wire-opening part of the present invention.

Fig. 6 is an enlarged view of a portion of fig. 5 at a in accordance with the present invention.

Reference numerals in the drawings: 1. a work table; 2. a support bracket; 3. a guide rod; 4. a wire-stretching part; 41. an L-shaped rod; 42. a harness column casing; 43. zhang Xianpan; 44. a wire supporting sleeve; 45. a columnar rod; 46. an auxiliary spring; 47. pressing the plate; 48. a connecting rod; 49. wire penetrating disc; 5. a wire expanding part; 51. a Z-shaped frame; 52. a fixing ring; 53. a wire expanding clamp seat; 54. a limit spring; 55. a multi-line segment; 56. a sliding cylinder; 57. a baffle; 58. a connecting spring; 6. a stranded wire portion; 61. a bracket; 62. an annular sleeve; 63. a wire reel; 64. a gear; 65. and a wire sleeve.

Detailed Description

The present application is described in further detail below in conjunction with figures 1-6.

The embodiment of the application discloses automatic stranded conductor device is used in wire and cable processing, specifically, this automatic stranded conductor device is used in wire and cable processing is mainly used and is carried out automatic triggering formula pencil expansion to the cable stranded conductor in-process, prevents that wire stranded conductor in-process from taking place to block to break to pencil expansion's process and stranded conductor process are not interfered each other, can guarantee through synchronous send the line to stranded conductor process in the in-process of expanding the cable stranded conductor and continue, can not cause hard dragging to the cable stranded conductor, effectually guaranteed the effect of wire stranded conductor.

Referring to fig. 1, an automatic wire twisting device for wire and cable processing includes: a workbench 1 placed on the ground; the upper end face of the workbench 1 is provided with a rectangular groove, and a support bracket 2 is fixedly arranged in the middle of the rectangular groove; a guide rod 3 is arranged in the rectangular groove on the right side of the support bracket 2, a wire tensioning part 4 is slidably arranged in the rectangular groove on the right side of the support bracket 2, the wire tensioning part 4 is in sliding fit with the guide rod 3, and a fixed spring is sleeved on the outer wall of the guide rod 3 between the wire tensioning part 4 and the support bracket 2; one end of the fixed spring is connected with the wire tensioning part 4, and the other end of the fixed spring is connected with the support bracket 2; the upper end of the support bracket 2 is provided with a wire expanding part 5, the wire expanding part 5 is matched with the wire expanding part 4, and a stranded wire part 6 is slidably arranged in a rectangular groove positioned at the left side of the support bracket 2; the wire stretching part 4, the wire expanding part 5 and the wire stranding part 6 are in linkage fit to finish the synchronous wire harness stranding operation.

Specifically, the position of the stranded wire part 6 on the workbench 1 is adjusted according to the diameter requirement of the wire harness and the like, then the position of the stranded wire part 6 is fixed through bolts, then the main wire of the wire and cable stranded wire sequentially passes through the axle center of the wire expanding part 4, the axle center of the wire expanding part 5 and the axle center of the stranded wire part 6 from right to left after being unreeled, and then is fixed on external winding equipment, then the rest wires needing to be stranded sequentially pass through the wire expanding part 4, the wire expanding part 5 and the stranded wire part 6 from the circumference of the main wire in turn, then the wires at the left side of the stranded wire part 6 are stranded together through the work of the stranded wire part 6, in the process of stranding the wires and cables, when the wires and the wire expanding part 4 are in a clamped state, the wire expanding part 4 is pulled to move from right to left in the process of continuing stranded wire, wherein the distance between the wire expanding part 4 and the stranded wire part 6 is shortened in the process of moving from right to left, so that a part of the wires at the same time can be kept stranded wire, in the process of moving from right to left, the wire expanding part 4 is matched with the wire expanding part 5 in the circumferential direction, the wire clamping part 5 is released, the wire clamping state of the wires is continued, and the wire clamping state of the wires can be restored after the wire expanding part is continued, and the wire clamping state is continued, in the wire clamping state is continued, and the wire is continued.

Referring to fig. 2, the stranded wire part 6 includes a bracket 61 slidably installed inside a rectangular groove, wherein the position of the bracket 61 inside the rectangular groove is fixed by a bolt; the upper end of the bracket 61 is provided with an annular sleeve 62, and the annular sleeve 62 is formed by two sections and is screwed and fixed through threads; the annular sleeve 62 is formed by two sections, one section of the annular sleeve is fixedly connected with the upper end of the support 61, the inner part of the annular sleeve 62 is rotatably provided with the stranded wire disc 63, the circumferential side wall of the stranded wire disc 63 is uniformly provided with movable beads which are in contact with the inner wall of the annular sleeve 62, and the movable beads are arranged to improve the smoothness of rotation of the stranded wire disc 63 in the annular sleeve 62 and facilitate the continuity of stranded wires; the stranded wire part 6 also comprises a fixed cavity arranged at the top end of the bracket 61, a motor is arranged in the fixed cavity through a motor seat, and an output shaft of the motor is connected with a gear 64; the middle part of the stranded wire disc 63 is provided with a through hole, the inner wall of the through hole is provided with a wire sleeve 65 through a bearing, the disc surface of the annular sleeve 62 is uniformly provided with winding holes around the circumferential direction of the through hole, and the winding holes and the wire sleeve 65 are internally provided with threading sleeves made of rubber materials; the purpose of the threading sleeve made of rubber is to reduce the abrasion to the wire in the moving process of the wire, and the threading sleeve made of rubber can be replaced periodically according to the service period, so that the smoothness of the wire passing through the threading sleeve is further maintained, the circumferential outer wall of the stranded wire disc 63 is uniformly provided with a latch, the circumferential outer wall of the lower end of the annular sleeve 62 is provided with a guide hole communicated with a fixed cavity, and the gear 64 is meshed with the latch.

When a specific wire is twisted, the motor works to drive the wire twisting disc 63 to rotate in the annular sleeve 62 through the action of the gear 64, and the wire twisting disc 63 can drive wires in the wire winding holes to twist with a main wire in the middle of the through hole in the rotating process, and the wire twisting sleeve 65 can prevent the wire twisting disc 63 from interfering with the main wire in the rotating process of the wire twisting disc 63 through the bearing because the main wire moves linearly in the through hole, so that the twisting effect of wires and cables is effectively ensured.

Referring to fig. 3 and 4, the wire expanding portion 5 includes a Z-shaped frame 51 vertically installed at the upper end of the support bracket 2, a fixed ring 52 is provided at the upper end of the Z-shaped frame 51, a plurality of groups of limiting rods are uniformly provided on the circumferential outer wall of the fixed ring 52, the number of each group of limiting rods is two, and a wire expanding clamping seat 53 is slidably provided on each group of limiting rods; the outer wall of the limiting rod is sleeved with a limiting spring 54, one end of the limiting spring 54 is connected with the outer wall of the wire expanding clamp seat 53 at the corresponding position, and the other end of the limiting spring 54 is connected with the outer wall of the fixed ring 52; the inside of the fixed ring 52 is of a cavity structure, a plurality of line segments 55 are arranged in the cavity of the fixed ring 52, the line segments 55 connect a plurality of line expansion clamp seats 53 together, the limiting springs 54 are in a compressed state, the other ends of the line segments 55 sequentially penetrate through the fixed ring 52, the Z-shaped frame 51 and the sliding cylinder 56 and then are connected with the baffle plates 57, the sliding cylinder 56 is arranged on the Z-shaped frame 51 in a sliding fit mode, the connecting springs 58 are sleeved on the outer wall of the sliding cylinder 56, one ends of the connecting springs 58 are connected with the Z-shaped frame 51, and the other ends of the connecting springs 58 are connected with the sliding cylinder 56; the right end of the sliding cylinder 56 is provided with a stepped hole, and a baffle 57 is arranged inside the stepped hole; the wire expanding clamp seat 53 is of a wedge type structure, the wedge type structure is convenient for being matched with the wire supporting sleeve 44 to push the wire supporting sleeve 44 outwards, and the outer wall of the upper end of the wire expanding clamp seat 53 is of an arc-shaped concave structure, so that the wire expanding clamp seat is convenient for limiting a wire; the total stiffness coefficient of the plurality of spacing springs 54 on the retaining ring 52 is less than the stiffness coefficient of the connecting springs 58; the purpose is to ensure that the wire expanding portion 5 can compress all the limiting springs 54 under the action of the connecting springs 58 in the initial state, and more precisely to keep the multi-wire segments 55 in a tensioned state, so that the wire expanding clamp 53 has an outward expanding trend.

Specifically, when wires and cables are clamped on the wire expanding part 4 in the wire twisting process, the clamped wires pull the L-shaped rod 41 to move left, so that the L-shaped rod 41 and the sliding cylinder 56 are matched to push the L-shaped rod to the left, the connecting spring 58 is further extruded, the connecting spring 58 keeps continuously contracting, when the sliding cylinder 56 moves for a certain distance, the wire supporting sleeve 44 is firstly contacted and matched with the wire expanding clamp seat 53, the wire supporting sleeve 44 and the wire expanding clamp seat 53 are overlapped in more areas along with the continuous movement of the sliding cylinder 56, the connecting spring 58 contracts to enable the limiting spring 54 to expand outwards, the wire is further lifted from the inside of the wire supporting sleeve 44 by the radial movement of the plurality of wire expanding clamp seats 53 synchronously along the fixed ring 52, the clamping condition of the wires is relieved, after the clamping condition of the wires is relieved, namely the tension of the wires to the wire expanding part 4 is lost, the wire expanding seat 53 is reset through the action of the connecting spring 58, and the wire expanding clamp seat 53 is reset synchronously; the wire expanding part 5 can make timely response according to the clamping state of the wire, and makes synchronous outward expansion action to the wire, the wire is lifted outwards completely and can be reset after being stirred, external power and manual intervention are not needed in the whole process, wire blocking or wire preventing treatment is not needed in a hard dragging or wire correcting mode, and the wire blocking state is not needed to be relieved completely, so that the continuity of stranded wires is effectively guaranteed.

Referring to fig. 3, 5 and 6, the wire opening part 4 includes an L-shaped rod 41 slidably disposed in the rectangular slot, the upper end of the L-shaped rod 41 is connected with a wire through column casing 42, a wire tensioning disc 43 is fixedly disposed on the circumferential outer wall of the wire through column casing 42, drawing slots are uniformly disposed on the circular outer wall of the wire tensioning disc 43 along the annular direction, arc slots corresponding to the wire expanding holders 53 one by one are uniformly disposed on the outer wall of the wire tensioning disc 43 along the circumferential direction, a wire supporting sleeve 44 is slidably disposed in the arc slots, a column-shaped rod 45 is disposed on the wire supporting sleeve 44, an auxiliary spring 46 is sleeved on the outer wall of the column-shaped rod 45, one end of the auxiliary spring 46 is connected with the wire supporting sleeve 44, and the other end of the auxiliary spring 46 is connected with the inner wall of the arc slots; one end of the columnar rod 45, which is positioned in the annular groove, is movably provided with a ball; the wire opening part 4 further comprises a pressing plate 47 which is arranged in the drawing groove in a sliding way, the pressing plate 47 consists of an annular plate and a plurality of right trapezoid blocks, arc grooves matched with balls of the columnar rods 45 are uniformly formed in the inclined surfaces of the right trapezoid blocks, and a threading sleeve made of rubber materials is arranged in the wire passing column casing 42; the inclined surface of the wire expanding clamp seat 53 is matched with the outer wall of the bottom end of the wire supporting sleeve 44; the wire opening part 4 further comprises a connecting rod 48 which is arranged on the vertical section of the L-shaped rod 41 and has a telescopic function, a wire penetrating disc 49 is arranged on the connecting rod 48, and wire penetrating holes are uniformly formed in the wire penetrating disc 49.

Before a specific stranded wire is twisted, the position of the wire supporting sleeve 44 in the arc-shaped groove can be adjusted according to the tension requirement of the wire, and the specific adjustment process is that the arc-shaped groove at the corresponding position on the pressing plate 47 is matched with the ball of the columnar rod 45 by pushing the pressing plate 47 into the wire tensioning disc 43, wherein the arrangement of the arc-shaped groove can enable the arc-shaped groove to be matched with the ball of the columnar rod 45 to lock the position of the pressing plate 47; when the pressing plate 47 is pulled out, the wire supporting sleeve 44 can be reset under the action of the auxiliary spring 46, the tension of the wires can be adjusted by the arranged wire opening part 4 according to the requirements of the wires, the wires can also move leftwards to be matched with the wire expanding part 5 to trigger the wire expanding part 5 when the wires are blocked, and the wires can be driven to move leftwards integrally to provide conditions for continuous stranded wires; the stranded wire work is continuously carried out through the wire clamping guarantee.

The implementation principle of the embodiment is as follows: the position of the stranded wire part 6 on the workbench 1 is adjusted firstly, then the tension of the wire on the wire supporting sleeve 44 is adjusted through the wire stretching part 4, the wire stretching part 5 and the stranded wire part 6 are sequentially penetrated through the wire stretching part 4, the wire stretching part 5 and the stranded wire part 6, and finally the stranded wire is completed through the work of the stranded wire part 6, the wire stretching part 4 is pulled to move left to be matched with the wire stretching part 5 when the wire is blocked in the stranded wire process, so that the wire stretching part 5 outwards lifts the wire blocked on the wire stretching part 4, and the blocking condition of the wire is relieved.

The foregoing description is only illustrative of the present invention and is not intended to limit the scope of the invention, and all equivalent structures or equivalent processes or direct or indirect application in other related technical fields are included in the scope of the present invention.

Claims

1. An automatic wire twisting device for wire and cable processing, comprising: a workbench (1) placed on the ground; the method is characterized in that: the upper end face of the workbench (1) is provided with a rectangular groove, and a support bracket (2) is fixedly arranged in the middle of the rectangular groove; a guide rod (3) is arranged in the rectangular groove on the right side of the support bracket (2), a wire tensioning part (4) is slidably arranged in the rectangular groove on the right side of the support bracket (2), the wire tensioning part (4) is slidably matched with the guide rod (3), and a fixed spring is sleeved on the outer wall of the guide rod (3) between the wire tensioning part (4) and the support bracket (2); one end of the fixed spring is connected with the wire tensioning part (4), and the other end of the fixed spring is connected with the support bracket (2); the upper end of the support bracket (2) is provided with a wire expanding part (5), the wire expanding part (5) is matched with the wire expanding part (4), a stranded wire part (6) is slidably arranged in a rectangular groove at the left side of the support bracket (2), and the wire expanding part (4), the wire expanding part (5) and the stranded wire part (6) are matched in a linkage manner to finish synchronous stranded wire operation;

the wire expanding part (5) comprises a Z-shaped frame (51) vertically arranged at the upper end of the support bracket (2), a fixed ring (52) is arranged at the upper end of the Z-shaped frame (51), a plurality of groups of limiting rods are uniformly arranged on the circumferential outer wall of the fixed ring (52), the number of each group of limiting rods is two, and wire expanding clamping seats (53) are arranged on each group of limiting rods in a sliding mode; the outer wall of the limiting rod is sleeved with a limiting spring (54), one end of the limiting spring (54) is connected with the outer wall of the wire expanding clamp seat (53) at the corresponding position, and the other end of the limiting spring (54) is connected with the outer wall of the fixed ring (52); the inside of the fixed ring (52) is of a cavity structure, a plurality of line segments (55) are arranged in the cavity of the fixed ring (52), the line segments (55) are connected with a plurality of line expansion clamp bases (53) together, the limiting springs (54) are in a compressed state, the other ends of the line segments (55) sequentially penetrate through the fixed ring (52), the Z-shaped frames (51) and the sliding cylinders (56) and then are connected with the baffle plates (57), the sliding cylinders (56) are arranged on the Z-shaped frames (51) in a sliding fit mode, the outer walls of the sliding cylinders (56) are sleeved with connecting springs (58), one ends of the connecting springs (58) are connected with the Z-shaped frames (51), and the other ends of the connecting springs are connected with the sliding cylinders (56); the right end of the sliding cylinder (56) is provided with a stepped hole, and the baffle (57) is arranged inside the stepped hole.

2. The automatic wire twisting device for wire and cable processing according to claim 1, wherein: the wire tensioning part (4) comprises an L-shaped rod (41) which is arranged in a rectangular groove in a sliding mode, a wire through column tube (42) is connected to the upper end of the L-shaped rod (41), a wire tensioning disc (43) is fixedly arranged on the circumferential outer wall of the wire through column tube (42), drawing grooves are uniformly formed in the circular outer wall of the wire tensioning disc (43) along the annular direction, arc grooves which are in one-to-one correspondence with wire expanding clamp seats (53) are uniformly formed in the outer wall of the wire tensioning disc (43) along the circumferential direction of the wire tensioning disc, wire supporting sleeves (44) are arranged in the arc grooves in a sliding mode, columnar rods (45) are arranged on the wire supporting sleeves (44), auxiliary springs (46) are sleeved on the outer wall of the columnar rods (45), one ends of the auxiliary springs (46) are connected with the wire supporting sleeves (44), and the other ends of the auxiliary springs (46) are connected with the inner walls of the arc grooves; one end of the columnar rod (45) positioned in the annular groove is movably provided with a ball.

3. The automatic wire twisting device for wire and cable processing according to claim 1, wherein: the stranded wire part (6) comprises a bracket (61) which is slidably arranged in the rectangular groove, wherein the position of the bracket (61) in the rectangular groove is fixed by a bolt; the upper end of the bracket (61) is provided with an annular sleeve (62), and the annular sleeve (62) is formed by two sections and is screwed and fixed through threads; one section is fixedly connected with the upper end of the support (61), a wire twisting disc (63) is rotatably arranged in the annular sleeve (62), and movable beads which are in fit contact with the inner wall of the annular sleeve (62) are uniformly arranged on the circumferential side wall of the wire twisting disc (63).

4. An automatic wire twisting device for wire and cable processing according to claim 3, wherein: the stranded wire part (6) further comprises a fixed cavity arranged at the top end of the bracket (61), a motor is arranged in the fixed cavity through a motor seat, and an output shaft of the motor is connected with a gear (64); the middle part of the stranded wire disc (63) is provided with a through hole, the inner wall of the through hole is provided with a wire sleeve (65) through a bearing, the disc surface of the annular sleeve (62) is uniformly provided with winding holes around the circumferential direction of the through hole, and the winding holes and the wire sleeve (65) are internally provided with threading sleeves made of rubber materials; the circumference outer wall of stranded conductor dish (63) evenly is provided with the latch, and the lower extreme circumference outer wall of annular cover (62) is provided with the guide hole with fixed chamber intercommunication, gear (64) and latch intermeshing.

5. An automatic wire twisting device for electric wire and cable processing according to claim 2, wherein: the wire opening part (4) further comprises a pressing plate (47) which is arranged in the drawing groove in a sliding mode, the pressing plate (47) consists of an annular plate and a plurality of right trapezoid blocks, arc grooves matched with balls of the columnar rods (45) are uniformly formed in inclined planes on the right trapezoid blocks, and a threading sleeve made of rubber materials is arranged in the wire through column casing (42); the inclined plane of the wire expanding clamp seat (53) is matched with the outer wall of the bottom end of the wire supporting sleeve (44).

6. An automatic wire twisting device for electric wire and cable processing according to claim 2, wherein: the wire opening part (4) further comprises a connecting rod (48) which is arranged on the vertical section of the L-shaped rod (41) and has a telescopic function, a wire penetrating disc (49) is arranged on the connecting rod (48), and wire penetrating holes are uniformly formed in the wire penetrating disc (49).

7. The automatic wire twisting device for wire and cable processing according to claim 1, wherein: the wire expanding clamp seat (53) is of a wedge type structure, and the outer wall of the upper end of the wire expanding clamp seat (53) is of an arc-shaped concave structure.