An active pay-off type back-twist machine

Abstract

The present invention relates to the technical field of twisted wire equipment, and more specifically, it relates to an active pay-off type back-twisting machine, comprising a chassis and a pay-off device, a rotation control mechanism and a tension adjustment device arranged on the chassis, the pay-off device comprising a pay-off frame and a pay-off motor and a wire drum arranged on the pay-off frame, the pay-off motor drives the wire drum to pay-off, the tension adjustment device comprising a plurality of guide wheels arranged on the pay-off frame, the wire material passes through the plurality of guide wheels in sequence, one of the guide wheels is vertically slidably arranged on the pay-off frame, and the guide wheel slides vertically as the tension of the wire material changes, and also comprises a wedge bar and a first distance sensor, the wedge bar is connected to the sliding guide wheel, the side of the wedge bar is an inclined surface, the first distance sensor faces the inclined surface of the wedge bar, and the first distance sensor is connected to the pay-off motor signal. The active pay-off type back-twisting machine of the present invention solves the problem that as the tension changes, the take-up speed and the pay-off speed of the back-twisting machine will have a certain deviation.

Description

Technical Field

[0001] The invention relates to the technical field of twisted wire equipment, in particular to an active pay-off type back-twisting machine. Background Art

[0002] In the process of twisting multiple strands of wire into a stranded wire, as the wires continue to rotate in the same direction, a torsional stress in that direction will accumulate in the stranded wire, which can easily cause the wire to self-twist. This self-twisting phenomenon can cause quality problems such as unevenness, bending, and even breakage in the stranded wire, thus affecting the stability and service life of the final product. In order to effectively eliminate this torsional stress, detwisting machines are widely used in the stranding process. Specifically, the detwisting machine will slowly rotate the wire in the opposite direction before or during the twisting process to help the wire eliminate the torsional stress and maintain the integrity of its twisted shape. Through this detwisting process, the problem of self-twisting or internal stress accumulation of the wire after twisting can be avoided, thereby ensuring the straightness and quality stability of the stranded wire.

[0003] A back-twisting device disclosed in a Chinese patent with publication number CN204792210U is characterized in that bearing fixing seats are respectively installed on the left and right sides of the inner wall of the chassis, and a rotating shaft is installed on each bearing fixing seat; a back-twisting bow seat is fixedly connected to the middle of each rotating shaft, and a wire-receiving frame is connected between the inner ends of the two rotating shafts; two back-twisting bow belts are symmetrically installed between the two back-twisting bow seats; a guide wheel a is installed on each rotating shaft, and the axial direction of the guide wheel a is perpendicular to the axial direction of the rotating shaft; a guide wheel b is installed on the outer wall of each back-twisting bow seat, and the axial direction of the guide wheel b is parallel to the axial direction of the guide wheel a; a guide mechanism is installed on the upper left side of the wire-receiving frame, a wire-receiving shaft is installed on the upper right side of the wire-receiving frame, and a wire-receiving wheel is placed on the wire-receiving shaft; a wire-receiving tension control device is installed on the wire-receiving frame; a plurality of wire blocks are arranged at intervals on each of the back-twisting bow belts, and the wire blocks are provided with through holes for facilitating the passage of wires. The above-mentioned prior art can realize the untwisting of the wire and is equipped with a tension adjustment device to eliminate the torsional stress of the core wire during twisting.

[0004] However, in the process of twisting wires, the wire tension will fluctuate with factors such as the size of the wire drum and the tightness of the wire winding. Even if the detwisting machine is equipped with a tension adjustment device, its main function is to relatively compensate for the tension rather than absolute speed synchronization control. Therefore, as the tension changes, the take-up speed and pay-off speed of the detwisting machine will have certain deviations. Summary of the invention

[0005] In order to solve the problem that as the tension changes, the take-up speed and pay-off speed of the detwist machine will have a certain deviation, the present application provides an active pay-off type detwist machine.

[0006] The present invention provides an active pay-off type back-twisting machine adopts the following technical solution:

[0007] An active pay-off type detwisting machine comprises a pay-off device and a tension adjusting device, wherein the pay-off device comprises a pay-off frame, a pay-off motor and a wire drum arranged on the pay-off frame, wherein the pay-off motor drives the wire drum to rotate and pay-off; the tension adjusting device comprises a plurality of guide wheels arranged on the pay-off frame, and the wire released by the pay-off device passes through the plurality of guide wheels in sequence, wherein one of the guide wheels is vertically slidably arranged on the pay-off frame, and the guide wheel vertically slides as the tension of the wire changes; the tension adjusting device also comprises a wedge bar and a first distance sensor, wherein the wedge bar is fixedly connected to the vertically sliding guide wheel, wherein one of the side surfaces of the wedge bar is an inclined surface inclined up and down, and the first distance sensor is fixed on the pay-off frame, and the first distance sensor is horizontally facing the inclined surface of the wedge bar, and the first distance sensor is connected to the pay-off motor signal.

[0008] Preferably, the tension adjusting device also includes a guide roller and a weight, and the multiple guide wheels of the tension adjusting device include an upper guide wheel, a lower guide wheel and an intermediate guide wheel, the guide roller is located on the left side of the wire drum, and the wire released from the wire drum passes around the guide roller from bottom to top, the upper guide wheel and the lower guide wheel are distributed up and down on the right side of the wire drum, the wire wound around the guide roller is wound up and down between the upper guide wheel and the lower guide wheel, and finally wound out from the upper guide wheel, the number of the intermediate guide wheels is two, the two intermediate guide wheels are distributed up and down on the right side of the upper guide wheel, the wire wound around the upper guide wheel passes around the two intermediate guide wheels in turn, and finally wound out from the bottom of the intermediate guide wheel below; the wire pay-off frame is provided with a slide rail, a slider is vertically slidably provided on the slide rail, the lower guide wheel is provided on the slider, and the weight is provided between the lower guide wheel and the slider.

[0009] Preferably, the wedge-shaped bar is thin at the upper end and thick at the lower end, the inclined surface of the wedge-shaped bar expands outward from top to bottom, and the speed of the pay-off motor increases as the wedge-shaped bar rises and decreases as the wedge-shaped bar falls.

[0010] Preferably, the tension adjustment device also includes a second distance sensor, which is fixedly arranged on the wire pay-off frame and is in the same direction as the first distance sensor, and is located below the first distance sensor. The second distance sensor is connected to the wire pay-off motor signal, and when the wire breaks and causes the wedge bar to fall, the second distance sensor controls the wire pay-off motor to stop after detecting that the wedge bar has fallen.

[0011] Preferably, the rotation control mechanism includes a rotation control motor and a bearing fixing seat, a rotating shaft, a backtwist bow seat and a backtwist bow belt arranged in pairs, the two bearing fixing seats are respectively arranged on the left inner wall and the right inner wall of the chassis, the two rotating shafts are divided into a left rotating shaft and a right rotating shaft, the left rotating shaft and the right rotating shaft are respectively rotatably arranged on the two bearing fixing seats, the rotation control motor is used to drive the left rotating shaft and the right rotating shaft to rotate synchronously, the two backtwist bow seats are divided into a left backtwist bow seat and a right backtwist bow seat, the left backtwist bow seat is fixedly connected to the left rotating shaft, and the right backtwist bow seat is fixedly connected to the right The rotating shaft is fixedly connected, and the two back-twist bow belts are symmetrically installed between the left back-twist bow seat and the right back-twist bow seat. The left rotating shaft and the right rotating shaft are respectively provided with a left axial hole and a right axial hole along their respective axial directions. The left rotating shaft and the right rotating shaft are respectively provided with a left guide wheel and a right guide wheel. There are multiple guide blocks vertically arranged on the inner sides of the two back-twist bow belts. The wire passes through the tension adjusting device, the right axial hole, the right guide wheel, the multiple guide blocks of one of the back-twist bow belts, the left guide wheel and the left axial hole in sequence, and then passes out. The wire pay-off frame is movably connected between the left rotating shaft and the right rotating shaft.

[0012] Preferably, a counterweight structure is provided at the bottom of the pay-off stand.

[0013] Preferably, the counterweight structure at the bottom of the pay-off stand includes a fixed counterweight and an adjustable counterweight, the fixed counterweight being a plurality of counterweight plates stacked on the front side of the bottom of the pay-off stand, the fixed counterweight being used to balance the weight of the tension adjustment device, the adjustable counterweight being arranged at the center of the bottom of the pay-off stand, the weight of the adjustable counterweight gradually increasing as the wire reel is paid out; the adjustable counterweight includes a water tank and a first pump body, the water tank being arranged at the bottom of the pay-off stand, the first pump body being arranged on one side of the top of the water tank, the first pump body being connected to an external water source via a flexible pipe; the first pump body is connected to the first distance sensor signal, the first pump body increases power synchronously with an increase in the pay-off speed, and decreases power synchronously with a decrease in the pay-off speed.

[0014] Preferably, the weight has a hollow interior and the hollow cavity of the weight is connected to a second pump body, the second pump body is connected to the water tank via a flexible tube, and the weight of the weight is adjusted by the water in the water tank.

[0015] Preferably, the water tank is movably arranged at the bottom of the pay-off frame forward and backward and is connected to a water tank driving component. A balance meter is arranged on the left or right side of the pay-off frame. The balance meter is connected to the water tank driving component by signal. When the weight of the weight increases, the water tank driving component controls the water tank to move toward the front side of the pay-off frame. When the weight of the weight decreases, the water tank driving component controls the water tank to move toward the back side of the pay-off frame.

[0016] Preferably, the water tank is fixedly arranged at the bottom of the wire pay-off rack, the rear side of the water tank is an inclined surface, and the upper end of the water tank is thick and the lower end is thin.

[0017] The beneficial effects of the present invention are:

[0018] An active pay-off type back-twisting machine comprises a chassis, a pay-off device, a rotation control mechanism and a tension adjustment device arranged on the chassis, the rotation control mechanism is rotatably arranged in the chassis, the rotation control mechanism allows the wire to pass through and back-twist, the pay-off device comprises a pay-off frame, a pay-off motor and a wire drum arranged on the pay-off frame, the pay-off frame is rotatably connected in the rotation control mechanism, and the pay-off motor drives the wire drum to rotate and pay-off; the tension adjustment device comprises a plurality of guide wheels arranged on the pay-off frame, the wire released by the pay-off device passes through the plurality of guide wheels in sequence, one of the guide wheels is vertically slidably arranged on the pay-off frame, and the guide wheel slides vertically as the tension of the wire changes; the tension adjustment device also comprises a wedge bar and a first distance sensor, the wedge bar is fixedly connected to the vertically sliding guide wheel, one of the side surfaces of the wedge bar is an inclined surface inclined up and down, the first distance sensor is fixed on the pay-off frame, the first distance sensor is horizontally facing the inclined surface of the wedge bar, and the first distance sensor is connected to the pay-off motor signal. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is an internal structure diagram of the active pay-off type back-twisting machine in the first embodiment;

[0020] Figure 2 is a structural diagram of a wire-releasing device and a tension adjusting device in Embodiment 1;

[0021] Figure 3 is a partial structural diagram of the tension adjustment device in the first embodiment;

[0022] Figure 4 is a side view of the pay-off frame in the second embodiment;

[0023] Figure 5 It is a schematic diagram of a module for adjusting the counterweight and the weight in the second embodiment;

[0024] Figure 6 It is a side view of the pay-off frame in the third embodiment.

[0025] Explanation of the reference numerals in the accompanying drawings: 11. pay-off rack; 12. pay-off motor; 13. reel; 21. bearing fixing seat; 22. left rotating shaft; 23. right rotating shaft; 24. left back-twist bow seat; 25. right back-twist bow seat; 26. back-twist bow belt; 27. guide block; 28. left guide wheel; 29. ​​right guide wheel; 31. guide roller; 32. upper guide wheel; 33. lower guide wheel; 34. middle guide wheel; 35. weight; 41. slide rail; 42. slider; 5. wedge bar; 61. first distance sensor; 62. second distance sensor; 71. counterweight plate; 72. water tank; 73. first pump body; 74. balancer. DETAILED DESCRIPTION

[0026] The following will be combined Figure 1-Figure 6 The present invention is further illustrated by the following embodiments.

[0027] Embodiment 1

[0028] This embodiment discloses an active wire-paying type detwisting machine.

[0029] Reference Figure 1 and Figure 2 The active pay-off type detwisting machine includes a chassis and a pay-off device, a rotation control mechanism and a tension adjustment device arranged on the chassis, wherein the pay-off device includes a pay-off frame 11 and a pay-off motor 12 and a wire drum 13 arranged on the pay-off frame 11, the wire drum 13 is rotatably arranged on the pay-off frame 11, the output shaft of the pay-off motor 12 is connected to the wire drum 13, and the wire drum 13 is controlled to rotate to pay off the wire.

[0030] Reference Figure 1 and Figure 2The rotation control mechanism includes a rotation control motor and a bearing fixing seat 21, a rotating shaft, a back-twist bow seat and a back-twist bow belt 26 arranged in pairs. The two bearing fixing seats 21 are respectively arranged on the left inner wall and the right inner wall of the chassis. The two rotating shafts are divided into a left rotating shaft 22 and a right rotating shaft 23. The left rotating shaft 22 and the right rotating shaft 23 are respectively rotatably arranged on the two bearing fixing seats 21. The rotation control motor is used to drive the left rotating shaft 22 and the right rotating shaft 23 to rotate synchronously. The two back-twist bow seats are divided into a left back-twist bow seat 24 and a right back-twist bow seat 25. The left back-twist bow seat 24 is fixedly connected to the left rotating shaft 22, and the right back-twist bow seat 25 is fixedly connected to the right rotating shaft 23. The two back-twist bow belts 26 are symmetrically installed between the left back-twist bow seat 24 and the right back-twist bow seat 25. Furthermore, the left rotating shaft 22 and the right rotating shaft 23 are respectively provided with a left shaft hole and a right shaft hole along their respective axis directions, and the left rotating shaft 22 and the right rotating shaft 23 are respectively provided with a left guide wheel 28 and a right guide wheel 29, and the inner sides of the two back-twisting bow belts 26 are vertically provided with a plurality of guide blocks 27. In addition, a tension adjustment device is provided on the pay-off frame 11. When paying off the wire, the wire passes through the tension adjustment device, the right shaft hole, the right guide wheel 29, the plurality of guide blocks 27 of one of the back-twisting bow belts 26, the left guide wheel 28 and the left shaft hole in sequence, and finally the wire passes outward from the left shaft hole to be taken up by the subsequent twisting equipment. In this process, the rotation control mechanism drives the wire to rotate in the opposite direction to eliminate the torsional stress of the wire during twisting.

[0031] Reference Figure 1 In this embodiment, the pay-off frame 11 is movably connected between the left rotating shaft 22 and the right rotating shaft 23, so that the pay-off frame 11 can swing around the left rotating shaft 22 and the right rotating shaft 23, but does not rotate with the left rotating shaft 22 and the right rotating shaft 23.

[0032] Reference Figure 1 and Figure 2The tension adjustment device includes a guide roller 31, a guide wheel and a weight 35. The guide wheels of the tension adjustment device include an upper guide wheel 32, a lower guide wheel 33 and an intermediate guide wheel 34. The guide roller 31 is located between the wire drum 13 and the left back-twisting bow seat 24. The axis of the guide roller 31 is parallel to the axis of the wire drum 13. The wire released from the wire drum 13 passes around the guide roller 31 from bottom to top. The upper guide wheel 32 and the lower guide wheel 33 are distributed up and down. The axes of the upper guide wheel 32 and the lower guide wheel 33 are parallel to the axis of the wire drum 13. The upper guide wheel 32 and the lower guide wheel 33 are both arranged between the wire drum 13 and the right back-twisting bow seat 25. The wire wound by the guide roller 31 is wound up and down between the upper guide wheel 32 and the lower guide wheel 33, and finally wound out by the upper guide wheel 32. There are two intermediate guide wheels 34, which are distributed up and down. The two intermediate guide wheels 34 are located between the upper guide wheel 32 and the right back-twist bow seat 25, and the heights of the two intermediate guide wheels 34 are lower than the height of the upper guide wheel 32. The axes of the two intermediate guide wheels 34 are also parallel to the axis of the wire drum 13. The wire wound by the upper guide wheel 32 is bent and bypassed by the two intermediate guide wheels 34 in sequence, and finally wound out from the bottom of the lower intermediate guide wheel 34, and finally enters the right shaft hole of the right rotating shaft 23. Further, the pay-off frame 11 is provided with a slide rail 41, and a slider 42 is vertically slidably provided on the slide rail 41. The lower guide wheel 33 is arranged on the slider 42, and the weight 35 is arranged between the lower guide wheel 33 and the slider 42. By increasing or decreasing the weight 35, the tension of the wire in the process of winding and releasing the wire can be adjusted.

[0033] Reference Figure 2 and Figure 3Since the lower guide wheel 33 is vertically movably arranged on the pay-off frame 11 through the tension adjustment device, if the pay-off speed of the wire is greater than the take-up speed, the lower guide wheel 33 will be lowered, and if the pay-off speed of the wire is less than the take-up speed, the lower guide wheel 33 will be raised. In order to solve the problem that the take-up speed and pay-off speed of the detwisting machine will have a certain deviation as the tension changes, the present invention also makes the following improvements. Specifically, the tension adjustment device also includes a wedge bar 5 and a first distance sensor 61, the wedge bar 5 is fixedly connected to the slider 42, the length direction of the wedge bar 5 is parallel to the vertical direction, and one side wall of the wedge bar 5 is an inclined surface. The first distance sensor is fixedly arranged on the pay-off frame 11, and the sensing end of the first distance sensor 61 is horizontally facing the inclined surface of the wedge bar 5, and the first distance sensor 61 is connected to the pay-off motor 12 signal. When the lower guide wheel 33 rises or falls due to the difference in the wire reeling and unreeling speed, the distance between the sensing end of the first distance sensor 61 and the inclined surface of the wedge bar 5 will change, and the pay-off motor 12 will adjust the pay-off speed according to the data of the first distance sensor 61. In this embodiment, the wedge bar 5 is thin at the upper end and thick at the lower end, so that the inclined surface of the wedge bar 5 expands outward from top to bottom, that is, as the wedge bar 5 rises, the first distance sensor 61 will sense that the distance data decreases, which means that the pay-off speed is less than the take-up speed, so the pay-off motor 12 speeds up and adjusts, and as the wedge bar 5 falls, the first distance sensor 61 will sense that the distance data increases, which means that the pay-off speed is greater than the take-up speed, so the pay-off motor 12 decelerates and adjusts, ultimately ensuring that the take-up speed of the back-twist machine is always consistent with the pay-off speed.

[0034] Reference Figure 2 and Figure 3 The tension adjustment device also includes a second distance sensor 62, which is also fixedly arranged on the pay-off frame 11 and is in the same direction as the first distance sensor 61. The second distance sensor 62 is located below the first distance sensor 61. The second distance sensor 62 is connected to the pay-off motor 12 signal. The purpose of setting the second distance sensor 62 is that when the wire breaks, the lower guide wheel 33, the slider 42 and the wedge bar 5 will fall downward. The falling wedge bar 5 will make the second distance sensor 62 sense specific distance data, so that the pay-off motor 12 will be shut down urgently to avoid continuing to pay off the wire.

[0035] Reference Figure 2In order to improve the stability of the pay-off frame 11, a counterweight structure is provided at the bottom of the pay-off frame 11. In this embodiment, the counterweight structure includes a plurality of counterweight plates 71, and the plurality of counterweight plates 71 are stacked and arranged at the bottom of the pay-off frame 11. Further, the positions of the plurality of counterweight plates 71 are adjusted according to the position of the tension adjustment device to ensure that the center of gravity of the pay-off frame 11 is closer to the center. In this embodiment, since the structures of the tension adjustment device except the guide roller 31 are all arranged at the rear side of the pay-off frame 11, the plurality of counterweight plates 71 are arranged at the front side of the bottom of the pay-off frame 11, so as to better ensure the balance of the pay-off frame 11 and ensure that the center of gravity of the pay-off frame 11 is closer to the center.

[0036] Embodiment 2

[0037] This embodiment also discloses an active wire-releasing type detwisting machine.

[0038] Reference Figure 4 , which is different from the first embodiment in that the counterweight structure at the bottom of the pay-off frame 11 includes a fixed counterweight and an adjustable counterweight. The fixed counterweight is a plurality of counterweight plates 71 stacked on the front side of the bottom of the pay-off frame 11. The fixed counterweight is used to balance the weight of the tension adjustment device. The adjustable counterweight is set at the center of the bottom of the pay-off frame 11. The weight of the adjustable counterweight is adjustable. Specifically, the weight of the adjustable counterweight gradually increases as the wire drum 13 is paid out. By setting the adjustable counterweight, the overall weight of the pay-off frame 11 can be kept consistent, avoiding the instability of the pay-off frame 11 caused by the decrease in the weight of the wire drum 13.

[0039] Reference Figure 4 and Figure 5 In this embodiment, the counterweight adjustment device includes a water tank 72 and a first pump body 73. The water tank 72 is arranged at the bottom of the pay-off frame 11, and the first pump body 73 is arranged at one side of the top of the water tank 72. The first pump body 73 is connected to an external water source through a flexible pipe. Through this arrangement, as the wire drum 13 continues to pay out the wire, the first pump body 73 continues to pump water into the water tank 72, so that the weight of the water tank 72 increases as the wire drum 13 continues to pay out the wire, thereby achieving the effect of adjusting the counterweight. Further, the first pump body 73 is connected to the first distance sensor 61 signal, so that the first pump body 73 increases the power as the distance data of the first distance sensor 61 decreases, and decreases the power as the distance data of the first distance sensor 61 increases, so that the first pump body 73 increases the power synchronously with the increase of the pay-off speed, and decreases the power synchronously with the decrease of the pay-off speed.

[0040] Reference Figure 4 and Figure 5, which is different from the first embodiment, in the present embodiment, the interior of the weight 35 is a cavity and the cavity of the weight 35 is connected to a second pump body, and the second pump body is connected to the water tank 72 through a flexible tube. When the weight of the weight 35 needs to be adjusted to adjust the tension, the second pump body pumps the water in the water tank 72 into the weight 35 or pumps the water in the weight 35 out of the water tank 72, thereby quickly adjusting the weight of the weight 35 while avoiding changes in the overall weight of the pay-off rack 11, ensuring that the pay-off rack 11 always maintains the optimal weight.

[0041] Reference Figure 4 and Figure 5 , with the adjustment of the weight of the weight 35, the pay-off frame 11 is easily unbalanced front and back, and it is troublesome to adjust the fixed counterweight. For this reason, the present embodiment further makes the following improvements. The water tank 72 is movably arranged at the bottom of the pay-off frame 11 front and back and is connected to a water tank 72 driving member. A balancer 74 is arranged on the left or right side of the pay-off frame 11. The balancer 74 is connected to the water tank 72 driving member by signal. When the weight of the weight 35 increases, the balancer 74 detects that the pay-off frame 11 is tilted to the rear side, and the water tank 72 driving member controls the water tank 72 to move to the front side of the pay-off frame 11, thereby performing balance adjustment. Conversely, when the weight of the weight 35 decreases, the water tank 72 driving member controls the water tank 72 to move to the rear side of the pay-off frame 11.

[0042] It should be noted that both the top of the water tank 72 and the top of the weight 35 have air holes to ensure that the internal air pressure of the water tank 72 and the weight 35 is balanced during use.

[0043] Embodiment 3

[0044] This embodiment also discloses an active wire-releasing type detwisting machine.

[0045] Reference Figure 6 , which is different from the second embodiment in that the water tank 72 of this embodiment adopts another balance adjustment structure. Specifically, the water tank 72 is fixedly arranged at the bottom of the pay-off frame 11, the rear side of the water tank 72 is an inclined surface, the upper end of the water tank 72 is thick and the lower end is thin, when the water in the water tank 72 is added to the weight 35 so that the pay-off frame 11 has a tendency to tilt backward, the water tank 72 will move its center of gravity forward as the water volume decreases, thereby achieving the balance adjustment of the pay-off frame 11. Conversely, when the weight 35 discharges water so that the pay-off frame 11 has a tendency to tilt forward, the water tank 72 will move its center of gravity backward as the water volume increases, thereby also achieving the balance adjustment of the pay-off frame 11.

[0046] The above are all preferred embodiments of the present invention, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An active pay-off type back-twist machine, characterized in that: The invention comprises a case and a wire-releasing device, a rotation control mechanism and a tension adjustment device arranged on the case. The rotation control mechanism is rotatably arranged in the case. The rotation control mechanism allows the wire to pass through and untwist. The wire-releasing device comprises a wire-releasing frame (11) and a wire-releasing motor (12) and a wire drum (13) arranged on the wire-releasing frame (11). The wire-releasing frame (11) is rotatably connected in the rotation control mechanism. The wire-releasing motor (12) drives the wire drum (13) to rotate and release the wire. The tension adjustment device comprises a plurality of guide wheels arranged on the wire-releasing frame (11). The wire released by the wire-releasing device passes through a plurality of guide wheels in sequence. The guide wheels are arranged on the pay-off frame (11) in a vertically sliding manner, and the guide wheel slides vertically as the tension of the wire changes; the tension adjustment device also includes a wedge bar (5) and a first distance sensor (61), the wedge bar (5) is fixedly connected to the vertically sliding guide wheel, one side of the wedge bar (5) is an inclined surface inclined up and down, the first distance sensor (61) is fixed on the pay-off frame (11), the first distance sensor (61) is horizontally facing the inclined surface of the wedge bar (5), and the first distance sensor (61) is connected to the pay-off motor (12) by signal; The rotation control mechanism comprises a rotation control motor and a bearing fixing seat (21) arranged in pairs, a rotating shaft, a back-twist bow seat and a back-twist bow belt (26). The two bearing fixing seats (21) are respectively arranged on the left inner wall and the right inner wall of the chassis. The two rotating shafts are divided into a left rotating shaft (22) and a right rotating shaft (23). The left rotating shaft (22) and the right rotating shaft (23) are respectively rotatably arranged on the two bearing fixing seats (21). The rotation control motor is used to drive the left rotating shaft (22) and the right rotating shaft (23) to rotate synchronously. The two back-twist bow seats are divided into a left back-twist bow seat (24) and a right back-twist bow seat (25). The left back-twist bow seat (24) is fixedly connected to the left rotating shaft (22), and the right back-twist bow seat (25) is fixedly connected to the right rotating shaft (23). The two detwisting bow belts (26) are symmetrically installed between the left detwisting bow seat (24) and the right detwisting bow seat (25); the left rotating shaft (22) and the right rotating shaft (23) are respectively provided with a left axial hole and a right axial hole along their respective axial directions; the left rotating shaft (22) and the right rotating shaft (23) are respectively provided with a left guide wheel (28) and a right guide wheel (29); a plurality of guide blocks (27) are vertically arranged on the inner sides of the two detwisting bow belts (26); the wire passes through the tension adjusting device, the right axial hole, the right guide wheel (29), the plurality of guide blocks (27) of one of the detwisting bow belts (26), the left guide wheel (28) and the left axial hole in sequence, and then passes out; the pay-off frame (11) is movably connected between the left rotating shaft (22) and the right rotating shaft (23).

2. The active pay-off type back-twisting machine according to claim 1, characterized in that: The tension adjustment device further comprises a guide roller (31) and a weight (35); the plurality of guide wheels of the tension adjustment device comprise an upper guide wheel (32), a lower guide wheel (33) and an intermediate guide wheel (34); the guide roller (31) is located on the left side of the wire drum (13); the wire released from the wire drum (13) passes around the guide roller (31) from bottom to top; the upper guide wheel (32) and the lower guide wheel (33) are vertically distributed on the right side of the wire drum (13); the wire released from the guide roller (31) is vertically wound between the upper guide wheel (32) and the lower guide wheel (33) and finally passed through the upper guide wheel (32) to be released. 32), the number of the intermediate guide wheels (34) is two, the two intermediate guide wheels (34) are distributed up and down on the right side of the upper guide wheel (32), the wire material wound around the upper guide wheel (32) sequentially bypasses the two intermediate guide wheels (34), and finally winds out from the bottom of the lower intermediate guide wheel (34); the pay-off frame (11) is provided with a slide rail (41), a slider (42) is vertically slidably provided on the slide rail (41), the lower guide wheel (33) is arranged on the slider (42), and the weight (35) is arranged between the lower guide wheel (33) and the slider (42).

3. The active pay-off type back-twisting machine according to claim 2, characterized in that: The wedge-shaped strip (5) is thin at the upper end and thick at the lower end, and the inclined surface of the wedge-shaped strip (5) expands outward from top to bottom. The speed of the pay-off motor (12) increases as the wedge-shaped strip (5) rises and decreases as the wedge-shaped strip (5) falls.

4. The active pay-off type back-twisting machine according to claim 3, characterized in that: The tension adjustment device further comprises a second distance sensor (62), the second distance sensor (62) being fixedly arranged on the pay-off frame (11) and being in the same direction as the first distance sensor (61), the second distance sensor (62) being located below the first distance sensor (61), the second distance sensor (62) being connected to the pay-off motor (12) by signal, and when the wire is broken and the wedge-shaped bar (5) falls, the second distance sensor (62) controls the pay-off motor (12) to stop after detecting that the wedge-shaped bar (5) has fallen.

5. The active pay-off type back-twisting machine according to claim 4, characterized in that: A counterweight structure is provided at the bottom of the pay-off frame (11).

6. The active pay-off type back-twisting machine according to claim 5, characterized in that: The counterweight structure at the bottom of the pay-off frame (11) comprises a fixed counterweight and an adjustable counterweight, wherein the fixed counterweight is a plurality of counterweight plates (71) stacked on the front side of the bottom of the pay-off frame (11), and the fixed counterweight is used to balance the weight of the tension adjustment device, and the adjustable counterweight is arranged at the center of the bottom of the pay-off frame (11), and the weight of the adjustable counterweight gradually increases as the wire reel (13) pays off the wire; the adjustable counterweight comprises a water tank (72) and a first pump body (73), wherein the water tank (72) is arranged at the bottom of the pay-off frame (11), and the first pump body (73) is arranged on one side of the top of the water tank (72), and the first pump body (73) is connected to an external water source through a flexible pipe; the first pump body (73) is connected to the first distance sensor (61) by signal, and the first pump body (73) increases power synchronously with an increase in the wire paying-off speed, and decreases power synchronously with a decrease in the wire paying-off speed.

7. The active pay-off type back-twisting machine according to claim 6, characterized in that: The weight (35) has a hollow interior and the hollow cavity of the weight (35) is connected to a second pump body, the second pump body is connected to the water tank (72) via a flexible tube, and the weight of the weight (35) is adjusted by using the water in the water tank (72).

8. The active pay-off type back-twisting machine according to claim 7, characterized in that: The water tank (72) is movably arranged at the bottom of the pay-off frame (11) and is connected to a water tank (72) driving member. A balancer (74) is arranged on the left or right side of the pay-off frame (11). The balancer (74) is connected to the water tank (72) driving member by signal. When the weight of the weight (35) increases, the water tank (72) driving member controls the water tank (72) to move toward the front side of the pay-off frame (11). When the weight of the weight (35) decreases, the water tank (72) driving member controls the water tank (72) to move toward the rear side of the pay-off frame (11).

9. The active pay-off type back-twisting machine according to claim 7, characterized in that: The water tank (72) is fixedly arranged at the bottom of the pay-off frame (11), the rear side of the water tank (72) is an inclined surface, and the upper end of the water tank (72) is thick and the lower end is thin.

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