CN216119705U

CN216119705U - Back-twist and tension adjusting device for back-twist machine

Info

Publication number: CN216119705U
Application number: CN202122155185.1U
Authority: CN
Inventors: 程诗超; 曾贵旺
Original assignee: Dongguan Chuangzhan Machinery Co ltd
Current assignee: Dongguan Chuangzhan Machinery Co ltd
Priority date: 2021-09-07
Filing date: 2021-09-07
Publication date: 2022-03-22
Anticipated expiration: 2031-09-07

Abstract

The utility model relates to the technical field of cables, in particular to a back-twist and tension adjusting device for a back-twist machine, which comprises a rack, a back-twist mechanism, a back-twist driving assembly, a tension adjusting assembly and a tension adjusting driving mechanism, wherein the back-twist driving assembly is in driving connection with the back-twist mechanism; the back-twist mechanism comprises a first mounting seat and a second mounting seat which are respectively connected with the rack in a rotating manner and a connecting rod connected with the first mounting seat and the second mounting seat, and the tension adjusting assembly is positioned between the first mounting seat and the second mounting seat and is connected with the connecting rod in a sliding manner; the output end of the tension adjusting driving mechanism is rotatably connected with the tension adjusting assembly. When the tension adjusting assembly rotates synchronously with the first mounting seat and the second mounting seat, the tension adjusting driving mechanism can drive the tension adjusting assembly to move synchronously relative to the connecting rod, the relative rotation of the tension adjusting assembly and the connecting rod is not influenced, and the tension adjusting assembly and the tension adjusting driving mechanism are good in working cooperation and high in working efficiency.

Description

Back-twist and tension adjusting device for back-twist machine

Technical Field

The utility model relates to the technical field of cables, in particular to a back-twist and tension adjusting device for a back-twist machine.

Background

The stranding and cabling of the electric wire cable is a process of stranding a plurality of wires into a cable core, each wire can be bent everywhere during stranding, and meanwhile, each wire can generate torsional deformation around the axis of the wire. The bending and twisting deformation of the single wire rod causes the stranded wire to generate internal stress, and the quality of the stranded wire is influenced. Due to the stranded wire structure, the bending deformation of the single wire during twisting is inevitable, the internal stress generated during twisting of the single wire can be solved through a untwisting process, namely, a untwisting machine is additionally arranged in front of the cabling machine, the single wire is pre-twisted through the untwisting machine to generate the internal stress, the internal stress applied to the single wire by the untwisting machine is offset with the internal stress in the cabling twisting process of the wire, and therefore the twisting degree and the deformation degree of a plurality of wires forming the cable are reduced. The connecting structure of the back-twist mechanism, the tension adjusting assembly and the tension adjusting driving mechanism in the existing back-twist machine is complex, the twisting degree or the internal stress of the wire during output is difficult to control, and the back-twist efficiency of the wire is low. Therefore, the drawbacks are obvious, and a solution is needed.

SUMMERY OF THE UTILITY MODEL

In order to solve the above technical problems, an object of the present invention is to provide a back twist and tension adjusting device for a back twist machine.

In order to achieve the purpose, the utility model adopts the following technical scheme:

a back-twist and tension adjusting device for a back-twist machine comprises a rack, a back-twist mechanism, a back-twist driving assembly, a tension adjusting assembly and a tension adjusting driving mechanism, wherein the back-twist driving assembly is arranged on the rack and is in driving connection with the back-twist mechanism; the back-twist mechanism comprises a first mounting seat and a second mounting seat which are respectively connected with the rack in a rotating manner and a connecting rod connected with the first mounting seat and the second mounting seat, and the tension adjusting assembly is positioned between the first mounting seat and the second mounting seat and is connected with the connecting rod in a sliding manner; the output end of the tension adjusting driving mechanism is rotatably connected with the tension adjusting assembly, and the tension adjusting driving mechanism is used for driving the tension adjusting assembly to reciprocate along the axis direction of the connecting rod.

Furthermore, the frame includes the frame body and rotates the pivot one that sets up in the frame body, move back and turn round drive assembly including from the driving wheel, set up the driver that turns back that turns round on the frame body, rotate the action wheel that sets up on the frame body and be connected with the driver drive that turns back and connect in the drive belt one from driving wheel and action wheel, mount pad one is connected with pivot one or from the driving wheel, it locates outside the pivot one from the driving wheel cover, a pivot runs through mount pad one.

Furthermore, the rack also comprises a first wire passing channel arranged in the first rotating shaft; the tension adjusting assembly comprises a tension adjusting seat in sliding connection with the connecting rod, a guide wheel set II arranged on the tension adjusting seat and a guide wheel set I arranged on the mounting seat I.

Furthermore, the first mounting seat comprises a mounting seat body, a protruding part connected with the mounting seat body and the driven wheel, an accommodating cavity formed by enclosing the inner side wall of the protruding part and the inner side wall of the driven wheel, and a locking part arranged in the accommodating cavity, and the first rotating shaft penetrates through the driven wheel, the accommodating cavity and the mounting seat body in sequence; the locking piece is used for locking the driven wheel on the first rotating shaft.

Furthermore, the back-twist mechanism further comprises a limiting seat arranged on the connecting rod, and the limiting seat is located between the first mounting seat and the tension adjusting assembly.

Furthermore, the tension adjusting driving mechanism comprises a tension driving assembly arranged on the rack and a pulling assembly inserted into the cavity of the second mounting seat and rotationally connected with the tension adjusting assembly, and the tension driving assembly is in driving connection with the pulling assembly.

Furthermore, the pulling assembly comprises a connecting seat rotationally connected with the tension adjusting assembly and a pull rod with one end connected with the connecting seat, and the other end of the pull rod is in driving connection with the tension driving assembly; the pull rod is inserted into the cavity of the second mounting seat and is in sliding connection with the second mounting seat.

Furthermore, the tension driving assembly comprises a wire outlet seat, a second transmission belt, an adjusting driver, a second rotating shaft and a guide wheel, wherein the second rotating shaft is rotatably arranged on the wire outlet seat, the guide wheel is sleeved on the second rotating shaft, one end of the second transmission belt is in driving connection with the adjusting driver after being wound on the guide wheel, the other end of the second transmission belt is connected to the pull rod, and the wire outlet seat and the adjusting driver are respectively arranged on the rack.

Furthermore, the number of the second driving belt, the number of the pull rod and the number of the guide wheels are two; the tension driving assembly further comprises a clamping plate, and the clamping plate is clamped outside one end, far away from the pull rod, of the two transmission belts II; the clamping plate is in driving connection with the adjusting driver; the clamping plate is movably arranged on the rack.

Furthermore, the tension driving assembly further comprises a wire passing pipe with one end penetrating through the wire seat, the wire passing pipe is provided with a second wire passing channel, and the other end of the wire passing pipe extends out of the cavity of the second mounting seat and is rotatably connected with the second mounting seat.

The utility model has the beneficial effects that: according to the utility model, the first mounting seat drives the tension adjusting assembly and the second mounting seat to synchronously rotate through the connecting rod, so that the internal stress of the cabled wire is greatly reduced, and the cabled quality of the wire is improved. The output power of the back-twist driving assembly is changed, so that the rotating speed of the back-twist driving assembly when driving the mounting seat to rotate and the twisting degree or internal stress of the wire rod when the wire rod is output from the back-twist machine can be adjusted; the second mounting seat and the first mounting seat are arranged on the rack at intervals and can rotate relative to the rack respectively, a sliding space is formed between the second mounting seat and the first mounting seat, when the tension adjusting driving mechanism drives the tension adjusting assembly to slide in the sliding space in a reciprocating mode along the axial direction of the connecting rod, the tension adjusting assembly can also rotate synchronously along with the first mounting seat and the second mounting seat, the tension adjusting assembly and the back-twist mechanism are good in working cooperation and high in working efficiency, the stability of the wire back-twist mechanism is improved, the connecting structure of the tension adjusting assembly and the back-twist mechanism is simple, the operation of workers is convenient, and the working efficiency of the back-twist machine is improved.

Drawings

Fig. 1 is a schematic perspective view of the present invention.

Fig. 2 is a partial sectional structural view of the present invention.

Fig. 3 is a partial perspective view of the present invention.

FIG. 4 is a partial side view of the present invention.

Description of reference numerals:

1. a frame; 2. a back-twist mechanism; 3. a tension adjustment drive mechanism; 4. a first mounting seat; 5. a second mounting seat; 6. a connecting rod; 7. a tension adjustment assembly; 8. a back-twist drive assembly; 9. a wire wheel; 11. a first rotating shaft; 12. a first wire passing channel; 21. a limiting seat; 31. a tension drive assembly; 32. a pulling assembly; 33. a connecting seat; 34. a wire passing pipe; 35. a pull rod; 36. a second wire passing channel; 37. a limiting guide wheel; 41. a first guide wheel set; 42. a boss portion; 43. an accommodating cavity; 44. a locking member; 71. a second guide wheel set; 72. a tension adjusting seat; 81. a back-twist driver; 82. a driven wheel; 83. a driving wheel; 84. a first transmission belt; 311. an adjustment drive; 312. a wire outlet seat; 313. a second rotating shaft; 314. a second transmission belt; 315. a splint; 316. and (4) a guide wheel.

Detailed Description

In order to facilitate understanding of those skilled in the art, the present invention will be further described with reference to the following examples and drawings, which are not intended to limit the present invention.

As shown in fig. 1 to 4, the back-twist and tension adjusting device for a back-twist machine provided by the utility model comprises a frame 1, a back-twist mechanism 2, a back-twist driving assembly 8, a tension adjusting assembly 7 and a tension adjusting driving mechanism 3, wherein the back-twist driving assembly 8 is arranged on the frame 1 and is in driving connection with the back-twist mechanism 2, the tension adjusting driving mechanism 3 is installed on the frame 1, the back-twist mechanism 2 comprises a first mounting seat 4 and a second mounting seat 5 which are respectively in rotating connection with the frame 1 and a connecting rod 6 connected with the first mounting seat 4 and the second mounting seat 5, and the tension adjusting assembly 7 is located between the first mounting seat 4 and the second mounting seat 5 and is in sliding connection with the connecting rod 6; the output end of the tension adjusting driving mechanism 3 is rotatably connected with the tension adjusting assembly 7, and the tension adjusting driving mechanism 3 is used for driving the tension adjusting assembly 7 to reciprocate along the axial direction of the connecting rod 6.

Specifically, the back-twist driving assembly 8 is in driving connection with the first mounting seat 4; a wire wheel 9 for bearing packaged wires is arranged on the rack 1, and the first mounting seat 4 is positioned between the wire wheel 9 and the tension adjusting component 7; the free end of the packaged wire rod is guided by a rotating shaft I11 on the rack 1 and then wound on the tension adjusting component 7, and then the wire rod respectively passes through the mounting seat II 5 and the tension adjusting driving mechanism 3 and then penetrates out of the untwisting machine. In the in-service use process, the back-twist driving assembly 8 is used for driving the first mounting seat 4 to rotate relative to the rack 1, the first mounting seat 4 drives the tension adjusting assembly 7 and the second mounting seat 5 to synchronously rotate through the connecting rod 6, the wire wound on the tension adjusting assembly 7 synchronously rotates with the first mounting seat 4 and the tension adjusting assembly 7, so that the wire wound on the tension adjusting assembly 7 generates torsion and internal stress, the wire penetrates out of the back-twist machine from the tension adjusting driving mechanism 3 and is then connected with the cabling machine, and the stranding machine is used for stranding and cabling, the internal stress of the wire after cabling is greatly reduced, and the quality of the wire after cabling is improved. By changing the output power of the back-twist driving component 8, the rotating speed of the back-twist driving component 8 when driving the mounting seat I4 to rotate and the twisting degree or internal stress of the wire rod when the wire rod is output from the back-twist machine can be adjusted; in order to keep the torsion degree or the internal stress of the wire rod output by the untwisting machine constant, the tension of the wire rod wound on the untwisting and tension adjusting device needs to be controlled, and the phenomenon that the wire rod is too loose or too tight is avoided, so that the untwisting driving assembly 8 cannot accurately control the rotating speed of the wire rod wound on the first mounting seat 4 and the tension adjusting assembly 7, and the torsion degree or the internal stress of the wire rod output by the untwisting machine is changed. Therefore, when the tension of the wire wound on the tension adjusting assembly 7 exceeds the preset range, the tension adjusting driving mechanism 3 drives the tension adjusting assembly 7 to slide on the connecting rod 6 in the direction close to or far away from the first mounting seat 4, the length of the wire wound on the tension adjusting assembly 7 is reduced or increased, so that the tension of the wire wound on the tension adjusting assembly 7 is recovered to the preset range, the tension adjusting driving mechanism 3 is additionally arranged, the phenomena that the wire wound on the tension adjusting assembly 7 is too loose or too tight to cause crumpling, deviation or fracture of the wire and the like are avoided, and the torsion and internal stress generated by the wire can be accurately controlled by matching the torsion withdrawing driving assembly 8 and the torsion withdrawing mechanism 2. Set up mount pad two 5 and mount pad one 4 interval on frame 1 and can rotate for frame 1 respectively, the slip space has been formed between mount pad two 5 and the mount pad one 4, when tension regulation actuating mechanism 3 drove tension adjusting part 7 along the axial direction of connecting rod 6 reciprocal slip in the slip space, tension adjusting part 7 still can rotate along with mount pad one 4 and mount pad two 5 synchronization, tension adjusting part 7 and back twist mechanism 2's work cooperativeness is good, work efficiency is high, stability when having improved the wire rod and back twist, tension adjusting part 7 and back twist mechanism 2's connection structure is simple, workman convenient operation, the work efficiency of back twist machine has been improved.

Further, frame 1 includes the frame body and rotates and sets up pivot 11 on the frame body, back and twist round drive assembly 8 including set up back on the frame body and twist round driver 81, the cover locate pivot 11 outside and with a pivot 11 key-type from driving wheel 82, rotate set up on the frame body and with back the action wheel 83 of twisting round driver 81 drive connection and connect in driving belt 84 from driving wheel 82 and action wheel 83, mount pad 4 is connected from driving wheel 82 with pivot 11 or from pivot 11, pivot 11 runs through in proper order from driving wheel 82 and mount pad 4.

Specifically, the rack 1 further comprises a first wire passing channel 12 arranged in the first rotating shaft 11; the tension adjusting assembly 7 comprises a tension adjusting seat 72 in sliding connection with the connecting rod 6, a guide wheel set II 71 arranged on the tension adjusting seat 72 and communicated with the wire passing channel I12, and a guide wheel set I41 arranged on the mounting seat I4 and communicated with the guide wheel set II 71, the tension adjusting driving mechanism 3 is provided with a wire passing channel II 36, and the guide wheel set I41 is communicated with the wire passing channel II 36 of the tension adjusting driving mechanism 3; the first guide wheel set 41 and the second guide wheel set 71 are both positioned in a sliding space; the back-twist driver 81 may employ a motor. In practical use, the free end of the package wire penetrates out of the first threading channel 12, then is sequentially wound on the second guide wheel set 71 and the first guide wheel set 41, and finally penetrates out of the second threading channel 36 of the tension adjusting driving mechanism 3 to the outside of the untwisting machine. The first rotating shaft 11 and the first mounting seat 4 are driven to rotate through the back-twist driver 81, the first rotating shaft 11 rotates relative to the rack body, and the stability of the back-twist mechanism 2 in the rotating process can be improved through the guiding and limiting effects of the first rotating shaft 11. A first wire passing channel 12 is additionally arranged, so that the coiled wire on the wire wheel 9 can be conveniently wound on the tension adjusting and driving mechanism 3; a first rotating shaft 11 and a first mounting seat 4 rotate synchronously, a wire rod positioned in a first wire passing channel 12 and a wire rod wound on a tension adjusting assembly 7 are twisted synchronously, and the wire rod can be prevented from colliding or colliding with the inner side wall of the first wire passing channel 12, so that the synchronism and the working efficiency of the first rotating shaft 11, the tension adjusting assembly 7, the back-twist mechanism 2 and the back-twist driving assembly 8 during working are improved.

Further, the first mounting seat 4 includes a mounting seat body, a protruding portion 42 connected to the mounting seat body and the driven wheel 82, an accommodating cavity 43 defined by an inner side wall of the protruding portion 42 and an inner side wall of the driven wheel 82, and a locking member 44 installed in the accommodating cavity 43, and the first guiding wheel set 41 is disposed on a side of the mounting seat body away from the protruding portion 42; the first rotating shaft 11 sequentially penetrates through the driven wheel 82, the accommodating cavity 43 and the mounting seat body; the locking piece 44 is sleeved outside the first rotating shaft 11; the locking piece 44 is used for locking the driven wheel 82 on the first rotating shaft 11.

In the actual installation process, firstly, one end of the first rotating shaft 11 is rotatably inserted into the rack body, then the driven wheel 82 is sleeved outside the other end of the first rotating shaft 11 and is connected with the first rotating shaft 11 in a key mode, the locking piece 44 is in threaded connection or clamping connection with the first rotating shaft 11, the end face of the locking piece 44 is abutted against the inner side wall of the driven wheel 82 or the inner side wall of the protruding part 42, and finally the protruding part 42 is firmly connected with the driven wheel 82 in a threaded connection or clamping connection mode. The first rotating shaft 11 and the driven wheel 82 are axially limited through the locking piece 44, so that relative displacement of the first rotating shaft 11 relative to the driven wheel 82 or the boss 42 in the axial direction is avoided, and the stability of the first rotating shaft 11 and the driven wheel 82 in synchronous rotation is improved.

Further, the back-twist mechanism 2 further comprises a limiting seat 21 arranged on the connecting rod 6, and the limiting seat 21 is located between the first mounting seat 4 and the tension adjusting seat 72.

In practical use, the number of the connecting rods 6 can be two to six, and preferably, the number of the connecting rods 6 is four. The first 41 and the second 71 guide wheel sets are located in the sliding space and between the tension adjusting seat 72 and the first 4 mounting seat, the first 41 and the second 71 guide wheel sets are oppositely arranged, the tension adjusting driving mechanism 3 drives the tension adjusting seat 72 to slide back and forth on the connecting rod 6 to adjust the tension of wires wound on the first 41 and the second 71 guide wheel sets, the limiting seat 21 is additionally arranged, when the tension adjusting seat 72 slides to be abutted against the limiting seat 21, the tension adjusting seat 72 stops sliding, collision between the first 41 guide wheel sets and the second 71 guide wheel sets can be avoided, the tension adjusting assembly 7 is damaged or deformed, and the service life of the tension adjusting assembly 7 is prolonged.

Further, the tension adjusting driving mechanism 3 includes a tension driving assembly 31 disposed on the frame 1 and a pulling assembly 32 inserted into the cavity of the second mounting seat 5 and rotationally connected to the tension adjusting seat 72, and the tension driving assembly 31 is drivingly connected to the pulling assembly 32.

Specifically, the reel 9, the first rotating shaft 11, the first mounting seat 4, the second mounting seat 5 and the tension driving component 31 are linearly arranged on the rack 1. The tension driving assembly 31 is in sliding connection with the cavity of the second mounting seat 5; the pulling assembly 32 is arranged corresponding to the first guiding wheel set 41, and even can be communicated with the first guiding wheel set. In the actual use process, the wire wound on the first guide wheel set 41 passes through the pulling assembly 32 and then is conveyed out of the untwisting machine. Tension drive assembly 31 drives pulling subassembly 32 and tension adjusting part 7 and slides along the length direction of connecting rod 6, and tension adjusting seat 72 and two 5 of mount pad can rotate for pulling subassembly 32, and the cavity of two 5 of mount pad is convenient for pull subassembly 32 and the connection of tension adjusting seat 72 to tension adjusting drive mechanism 3 carries out tension adjustment to the wire rod of twining on tension adjusting part 7, and it is convenient to adjust, easy operation.

Further, the pulling assembly 32 comprises a connecting seat 33 rotatably connected with the tension adjusting seat 72 and a pull rod 35 with one end connected with the connecting seat 33, and the other end of the pull rod 35 is in driving connection with the tension driving assembly 31; the pull rod 35 is inserted into the cavity of the second mounting seat 5 and is connected with the second mounting seat 5 in a sliding manner.

In the actual use process, the tension driving component 31 drives the pull rod 35, the connecting seat 33 and the tension adjusting seat 72 to slide back and forth along the length direction of the connecting rod 6, the pull rod 35 slides back and forth in the cavity of the second mounting seat 5, and the pulling component 32 is simple in structure and convenient to produce.

Further, the tension driving assembly 31 includes a wire outlet seat 312, an adjusting driver 311, a second driving belt 314, a second rotating shaft 313 rotatably disposed on the wire outlet seat 312, and a guide wheel 316 sleeved on the second rotating shaft 313 and connected with the second rotating shaft 313 in a key manner, one end of the second driving belt 314 is wound around the guide wheel 316 and then is in driving connection with the adjusting driver 311, the other end of the second driving belt 314 is connected to the pull rod 35, and the wire outlet seat 312 and the adjusting driver 311 are respectively disposed on the frame 1.

Specifically, the tension driving assembly 31 further includes a wire passing tube 34 having one end penetrating through the wire seat 312, the second wire passing channel 36 is disposed in the axial direction of the wire passing tube 34, and the other end of the wire passing tube 34 protrudes out of the cavity of the second mounting seat 5 and is rotatably connected therewith; one end of the second wire passing channel 36 is communicated with the first guide wheel set 41, and the other end of the second wire passing channel 36 is communicated with the outside of the wire outlet seat 312; the number of the second transmission belt 314, the pull rod 35 and the guide wheel 316 is two; the tension driving assembly 31 further comprises a clamping plate 315 for clamping the two second transmission belts 314, the clamping plate 315 is clamped outside one ends of the second transmission belts 314 far away from the pull rod 35, and the clamping plate 315 is in driving connection with the adjusting driver 311; the clamping plate 315 is slidably disposed on the frame 1. In the actual use process, the adjusting driver 311 drives the clamping plate 315 to move towards the direction close to or away from the second rotating shaft 313, the clamping plate 315 pulls the second driving belt 314, the pull rods 35, the connecting seat 33 and the tension adjusting seat 72 to move, the two pull rods 35 are symmetrically arranged along the central axis of the wire passing pipe 34, and the two pull rods 35 drive the connecting seat 33 to move, so that the stress of the connecting seat 33 is balanced, and the stability of the reciprocating movement of the connecting seat 33 and the tension adjusting seat 72 is improved; meanwhile, the second transmission belt 314 can drive the guide wheel 316 and the second rotating shaft 313 to rotate relative to the wire outlet seat 312, and the second rotating shaft 313 and the guide wheel 316 limit and guide the movement of the second transmission belt 314 so as to improve the accuracy of the second transmission belt 314 in moving. The coordination and the synchronization are high when the clamping plate 315 drives the two second transmission belts 314 to move, so that the simple structure and the good stability of the tension adjusting driving mechanism 3 are improved; in the operation process of the back-twist driving assembly 8, the second mounting seat 5 can rotate relative to the wire passing pipe 34, and the wire passes through the second wire passing channel 36 and penetrates out of the wire outlet seat 312, so that the tension adjusting and driving mechanism 3 can convey the wire conveniently, and the stability of the tension adjusting and driving mechanism 3 in conveying the wire is improved.

Specifically, the tension driving assembly 31 further includes a limit guide wheel 37 rotatably disposed on the wire outlet base 312, and the second driving belt 314 is disposed between the guide wheel 316 and the limit guide wheel 37.

Specifically, the adjustment actuator 311 is located below the clamp plate 315; the number of the limit guide wheels 37 is two. In the practical use process, the second driving belt 314 can also drive the limiting guide wheel 37 to rotate relative to the wire outlet seat 312, the limiting guide wheel 37 is in rolling contact with the side face of the second driving belt 314, and the structural design enables the second driving belt 314 to be more stable and accurate in the driving process.

All the technical features in the embodiment can be freely combined according to actual needs.

The above embodiments are preferred implementations of the present invention, and the present invention can be implemented in other ways without departing from the spirit of the present invention.

Claims

1. The utility model provides a move back and turn round and tension adjusting device for moving back machine of turning round which characterized in that: the device comprises a rack (1), a back-twist mechanism (2), a back-twist driving component (8), a tension adjusting component (7) and a tension adjusting driving mechanism (3), wherein the back-twist driving component (8) is arranged on the rack (1) and is in driving connection with the back-twist mechanism (2), and the tension adjusting driving mechanism (3) is arranged on the rack (1); the back-twist mechanism (2) comprises a first mounting seat (4), a second mounting seat (5) and a connecting rod (6), wherein the first mounting seat (4) and the second mounting seat (5) are respectively rotatably connected with the rack (1), the connecting rod (6) is connected with the first mounting seat (4) and the second mounting seat (5), and the tension adjusting assembly (7) is positioned between the first mounting seat (4) and the second mounting seat (5) and is in sliding connection with the connecting rod (6); the output end of the tension adjusting driving mechanism (3) is rotatably connected with the tension adjusting assembly (7), and the tension adjusting driving mechanism (3) is used for driving the tension adjusting assembly (7) to reciprocate along the axis direction of the connecting rod (6).

2. A back-twist and tension adjusting device for a back-twist machine, as claimed in claim 1, wherein: frame (1) includes that frame body and rotation set up pivot (11) on the frame body, back twist reverse drive assembly (8) including from driving wheel (82), set up back twist reverse driver (81) on the frame body, rotate and set up on the frame body and with back twist reverse drive wheel (83) that driver (81) drive is connected and connect in driving belt (84) from driving wheel (82) and driving wheel (83), mount pad (4) are connected with pivot (11) or from driving wheel (82), outside pivot (11) were located to follow driving wheel (82) cover, pivot (11) run through mount pad (4).

3. A back-twist and tension adjusting device for a back-twist machine, as claimed in claim 2, wherein: the rack (1) also comprises a first wire passing channel (12) arranged in the first rotating shaft (11); the tension adjusting assembly (7) comprises a tension adjusting seat (72) in sliding connection with the connecting rod (6), a guide wheel set II (71) arranged on the tension adjusting seat (72) and a guide wheel set I (41) arranged on the mounting seat I (4).

4. A back-twist and tension adjusting device for a back-twist machine, as claimed in claim 2, wherein: the mounting seat I (4) comprises a mounting seat body, a protruding part (42) connected to the mounting seat body and the driven wheel (82), an accommodating cavity (43) formed by enclosing of the inner side wall of the protruding part (42) and the inner side wall of the driven wheel (82), and a locking piece (44) arranged in the accommodating cavity (43), wherein the rotating shaft I (11) sequentially penetrates through the driven wheel (82), the accommodating cavity (43) and the mounting seat body; the locking piece (44) is used for locking the driven wheel (82) on the first rotating shaft (11).

5. A back-twist and tension adjusting device for a back-twist machine, as claimed in claim 1, wherein: the back-twist mechanism (2) further comprises a limiting seat (21) arranged on the connecting rod (6), and the limiting seat (21) is located between the first mounting seat (4) and the tension adjusting component (7).

6. A back-twist and tension adjusting device for a back-twist machine, as claimed in claim 1, wherein: the tension adjusting driving mechanism (3) comprises a tension driving assembly (31) arranged on the rack (1) and a pulling assembly (32) inserted into the cavity of the second mounting seat (5) and rotatably connected with the tension adjusting assembly (7), and the tension driving assembly (31) is in driving connection with the pulling assembly (32).

7. A back-twist and tension adjusting device for a back-twist machine, according to claim 6, wherein: the pulling assembly (32) comprises a connecting seat (33) rotatably connected with the tension adjusting assembly (7) and a pull rod (35) with one end connected with the connecting seat (33), and the other end of the pull rod (35) is in driving connection with the tension driving assembly (31); and the pull rod (35) is inserted into the cavity of the second mounting seat (5) and is in sliding connection with the second mounting seat (5).

8. A back-twist and tension adjusting device for a back-twist machine, according to claim 7, wherein: the tension driving assembly (31) comprises a wire outlet seat (312), a second transmission belt (314), an adjusting driver (311), a second rotating shaft (313) rotatably arranged on the wire outlet seat (312) and a guide wheel (316) sleeved on the second rotating shaft (313), one end of the second transmission belt (314) is in driving connection with the adjusting driver (311) after being wound on the guide wheel, the other end of the second transmission belt (314) is connected to the pull rod (35), and the wire outlet seat (312) and the adjusting driver (311) are respectively arranged on the rack (1).

9. A back-twist and tension adjusting device for a back-twist machine, according to claim 8, wherein: the number of the second transmission belt (314), the number of the pull rod (35) and the number of the guide wheels (316) are two; the tension driving assembly (31) further comprises a clamping plate (315), and the clamping plate (315) is clamped outside one ends, far away from the pull rod (35), of the two second transmission belts (314); the clamping plate (315) is in driving connection with the adjusting driver (311); the clamping plate (315) is movably arranged on the frame (1).

10. A back-twist and tension adjusting device for a back-twist machine, according to claim 8, wherein: the tension driving assembly (31) further comprises a wire passing pipe (34) with one end penetrating through the wire seat (312), the wire passing pipe (34) is provided with a second wire passing channel (36), and the other end of the wire passing pipe (34) extends out of the cavity of the second mounting seat (5) in a protruding mode and is connected with the second mounting seat in a rotating mode.