CN116856083A - Automatic group-changing rotary paying-off machine for double twisting machine and group-changing method - Google Patents

Abstract

The automatic group-changing rotary paying-off machine for the double-twisting machine comprises a large disc I, a clamping opening cylinder assembly, a positioning pin assembly, a motor sliding seat assembly, a sensor assembly, a toothed belt wheel, a toothed belt, a flying disc assembly, a wire wheel rotating frame and a braking air brake, wherein the flying disc assembly is arranged on the large disc I and the large disc II, the flying disc assembly is driven to rotate through the toothed belt wheels, a plurality of toothed belt wheels are in transmission connection with the toothed belt, the wire wheel rotating frame is arranged between the 2 groups of flying disc assemblies through bearings, and the clamping opening cylinder assembly clamps and brakes the toothed belt; the positioning pin assembly locks the big disc I; the sensor assembly is used for sensing the rotation position of the toothed belt wheel and sending a signal to the brake air brake, the motor sliding seat assembly drives the toothed belt wheel to rotate, and the brake air brake realizes braking of the toothed belt wheel. After the single strand of paying-off reaches a fixed length, the program designates the group-changing station, so that the flying disc passing line can be avoided, and the automatic group-changing work of a robot is facilitated. Reduces the labor intensity of operators and improves the automatic production level of the double twisting machine.

Description

Automatic group-changing rotary paying-off machine for double twisting machine and group-changing method

Technical Field

The invention relates to a paying-off machine for a double-twisting machine, in particular to an automatic group-changing rotary paying-off machine for a double-twisting machine and a group-changing method.

Background

At present, each enterprise is tightening and improving the automation level of production equipment, and then improves the competitiveness of the enterprise. In the double twisting machine with the outer-putting and inner-winding modes, a rotary paying-off machine is provided with an all-wing aircraft, and can rotate a single strand for paying off and then strand by the double twisting machine. After the single strand of paying-off reaches a fixed length, the paying-off spool needs to be replaced, which is called paying-off replacement group. The rotary paying-off machine can store a plurality of single strands, the number of the single strands can reach 6-18 spool wheels, and when the traditional paying-off and group changing are carried out, the whole-course tracking operation of workers is needed, so that the production efficiency cannot be improved to the maximum extent.

Disclosure of Invention

The invention provides an automatic group-changing rotary paying-off machine for a double-twisting machine and a group-changing method. Reduces the labor intensity of operators and improves the automatic production level of the double twisting machine.

In order to achieve the above purpose, the invention adopts the following technical scheme:

the automatic group-changing rotary paying-off machine for the double-twisting machine comprises a large disc I, a power bracket, an opening and clamping cylinder assembly, a positioning pin assembly, a motor sliding seat assembly, a sensor assembly, a toothed belt wheel, a large gear, a toothed belt, a large disc II, a flying disc assembly, a wire wheel rotating frame, a single-strand spool, a core wire frame, a core strand spool, a clutch, a transmission shaft, a brake disc, a brake air brake and a rotary main shaft, wherein the rotary main shaft is fixed on the power bracket through a bearing; the positioning pin assembly is fixed on the power bracket, and locks the first large disc through plugging action; the sensor assembly is fixed on the power bracket and used for sensing the rotation position of the toothed belt wheel and sending a braking signal to the braking air brake, the core wire frame is fixed on the power bracket, the core strand spool is rotationally moved on the core wire frame through the pay-off shaft, the single strand spool is rotationally moved on the wire wheel rotating frame through the pay-off shaft, the motor sliding seat assembly is fixed on the power bracket and used for transmitting power to the transmission shaft through the clutch and used for driving one of the toothed belt wheels to rotate, the braking disc is fixed on the transmission shaft, and the braking air brake realizes the clamping action on the braking disc.

The clamping opening cylinder assembly comprises a clamping opening cylinder, a cylinder seat, a clamping opening key, positioning clamps, clamp jaws, first screws, clamp springs, clamp seats and clamp pin shafts, wherein the clamping opening cylinder is fixed on the cylinder seat, the clamping opening key is fixed on the clamping opening cylinder, when the clamping opening cylinder does stretching and retracting movement, the clamping opening key is driven to move together, a sliding groove is formed in the cylinder seat, the clamping opening key does linear movement in the sliding groove, the clamp jaws are fixed on the positioning clamps through the first screws, the positioning clamps are two and oppositely arranged, the positioning clamps are hinged on the clamp seats through the clamp pin shafts, the clamp springs are connected between the two positioning clamps, the clamp seats are fixed on the first large disc, and the toothed belt penetrates through the middle of the clamp jaws oppositely arranged.

The positioning pin assembly comprises a positioning cylinder, a cylinder shaft rod, a transition flange, a positioning pin jacket, a large disc positioning pin and a positioning sleeve, wherein the positioning cylinder is fixed on the positioning pin jacket through the transition flange, the positioning pin jacket is fixed on a power bracket, the large disc positioning pin is fixed on the cylinder shaft rod and moves linearly in the positioning pin jacket, and the positioning sleeve is fixed on the large disc and rotates along with the large disc.

The motor sliding seat assembly comprises a motor sliding seat, an adjusting nut, a spring guide pillar, a clutch spring, a spring pad sleeve, a nut, a main motor, a clutch cylinder and a jacking sleeve, wherein the main motor is fixed on the motor sliding seat, a clutch is fixed on the main motor, the adjusting nut is connected with one end of the spring guide pillar through threads, a shaft shoulder at the other end of the spring guide pillar is matched with the nut, the spring guide pillar is locked on a power support, the spring guide pillar penetrates through the motor sliding seat and is in sliding connection with the motor sliding seat, the clutch spring is sleeved on the spring guide pillar, one end of the clutch spring is jacked with the adjusting nut, the other end of the clutch spring is jacked with the motor sliding seat, the clutch spring is tightly pressed by screwing the adjusting nut, the clutch cylinder is fixed on the motor sliding seat, the jacking sleeve is fixed on the clutch cylinder, and sliding guide mechanisms are arranged on two sides of the main motor.

The sensor assembly comprises a sensing cylinder, a sensing cylinder rod, a sensing bracket, sensing sleeves, displacement sensors and sensing pins, wherein the sensing cylinder is fixed on a power bracket through the sensing bracket, the displacement sensors are fixed on the sensing sleeves, the sensing sleeves are fixed on the sensing cylinder rod and extend and retract together with the sensing cylinder rod, and the number of the sensing pins is 2, and the sensing pins are uniformly distributed and fixed on a toothed belt wheel.

The large gear is driven to rotate through a servo motor, the servo motor is fixed on a power bracket, a motor gear is fixed on the end of a motor shaft of the servo motor, and the motor gear is meshed with the large gear for transmission.

The flying disc assembly comprises a wire passing nozzle and a flying disc, wherein the wire passing nozzle is fixed on two sides of the flying disc and rotates together with the flying disc.

A group changing method of an automatic group changing rotary paying-off machine for a double twisting machine comprises the following steps:

1) When the paying-off single strand reaches a fixed length, the system automatically sends out a deceleration stop instruction;

2) When the speed of the flying disc assembly is reduced to a set value, a sensing cylinder in the sensor assembly extends out of a sensing cylinder rod, so that a displacement sensor approaches to a sensing pin to further sense the rotation stopping position of the toothed belt wheel, the displacement sensor slowly approaches to the sensing pin, and when the sensing distance is entered, a signal for braking an air brake is generated;

3) The brake air brake clamps the brake disc, the brake air brake is released after clamping for 5 seconds, the flying disc assembly stops rotating at the moment, the stop position is a group changing position of the flying disc assembly, a wire passing channel of the group changing position is relatively horizontal to a wire wheel turning frame position, and the sensing cylinder retracts to the sensing cylinder rod;

the wire passing channel is relatively horizontal to the wire wheel turning frame, so that the single-strand spool can be conveniently replaced; in the position replacement group, the robot does not interfere with the wire passing channel when replacing the single-strand spool;

4) The clamping opening cylinder drives the clamping opening key to retract, the positioning clamp drives the clamp jaw to clamp the toothed belt under the action of the clamp spring, at the moment, the flying disc assembly cannot rotate freely, and the positions of the wire passing channel and the wire wheel rotating frame are relatively fixed;

5) The clutch cylinder stretches out, the top sleeve is contacted with the power bracket, the motor sliding seat is reversely pushed to slide, the main motor slides together with the clutch, and the clutch separation of the main motor and the transmission system is realized;

6) The positioning cylinder retracts, the cylinder shaft lever drives the positioning pin of the large disc to retract, and the positioning of the first large disc is released;

7) The servo motor drives a motor gear to rotate, and the motor gear drives a large gear to rotate so as to transmit power to the rotating main shaft; under the drive of a servo motor, the rotary main shaft slowly rotates, so that the large disc I and the large disc II are driven to rotate and position together;

8) After each single-strand spool is replaced by the manipulator, the servo motor drives the rotary main shaft to rotate, the large disc I and the large disc II slowly rotate, and the other spool is rotated to a group replacing position; when the large disc rotates, the wire wheel rotating frame is always kept horizontal, and the flying disc and the wire wheel rotating frame can rotate relatively; when each wire wheel rotating frame rotates to the group changing position, the wire passing channel can keep the same horizontal position with the wire wheel rotating frame, so that group changing is facilitated;

9) When all single-strand group changing work is finished, an operator needs to confirm on site and sends out a starting-up reset instruction;

10 A servo motor drives the rotary main shaft to reversely rotate, and the primary disc and the secondary disc recover to the original positions, so that the positions of the single-strand wire outlet channel and the wire collecting and distributing disc are correspondingly recovered;

11 The positioning cylinder stretches out, the cylinder shaft rod drives the positioning pin of the large disc to stretch out, and the positioning pin is inserted into the positioning sleeve, so that the large disc is locked at a first position;

12 The clamping opening cylinder drives the clamping opening key to extend out, and the clamping opening key expands to position the clamp, so that the clamp jaw cannot clamp the toothed belt;

13 The clutch cylinder is retracted, and the motor sliding seat positively slides under the action of the clutch spring; the main motor and the clutch slide together to realize the joint of the main motor and the transmission system;

14 The operator confirms on site and sends out a starting command.

Compared with the prior art, the invention has the beneficial effects that:

1) When paying off and changing groups, the rotary paying-off machine can perform semi-automatic group changing work.

2) The invention designates the group-changing station by the program, can avoid the flying disc passing line, and is convenient for the automatic group-changing work of the robot.

3) Reduces the labor intensity of operators and improves the automatic production level of the double twisting machine.

Drawings

Fig. 1 is a partial cutaway isometric view of the present invention.

Fig. 2 is an isometric view of the present invention.

Fig. 3 is a schematic diagram of the mechanical transmission principle of the invention.

Fig. 4 is an exploded view of the open clamp cylinder assembly of the present invention.

FIG. 5 is an exploded schematic view of the dowel assembly of the present invention.

Fig. 6 is an exploded view of the motor slide assembly of the present invention.

Fig. 7 is an exploded view of the sensor assembly of the present invention.

Fig. 8 is an exploded view of the flying disc assembly and reel truck of the present invention.

In the figure: 1. large disc one, 2, power bracket, 3, open clamp cylinder assembly, 4, locating pin assembly, 5, motor slide assembly, 6, sensor assembly, 7, toothed pulley, 8, servo motor, 9, large gear, 10, toothed belt, 11, large disc two, 12, fly disc assembly, 13, idler, 14, wire wheel rotating stand, 15, single strand spool, 16, spool, 17, core strand spool, 18, clutch, 19, drive shaft, 20, brake disc, 21, brake air brake, 22, rotating spindle, 301, open clamp cylinder, 302, cylinder block, 303, open clamp key, 304, locating clamp, 305, clamp jaw, 306, screw one, 307, clamp spring, 308, clamp seat, 309, clamp pin, 310, chute. 401, positioning cylinder, 402, cylinder shaft, 403, transition flange, 404, dowel pin housing, 405, large disc dowel pin, 406, dowel sleeve, 501, screw two, 502, linear bearing, 503, motor slide, 504, pilot lever, 505, adjustment nut, 506, spring guide post, 507, clutch spring, 508, spring spacer, 509, nut, 510, main motor, 511, clutch cylinder, 512, top sleeve, 601, sensing cylinder, 602, sensing cylinder rod, 603, sensing bracket, 604, sensing sleeve, 605, displacement sensor, 606, thin nut, 607, sensing pin, 1201, wire passing nozzle, 1202, flying disc, 1203 bearing, 1204, wire passing channel, 801 motor gear, 1401 spool.

Detailed Description

Embodiments of the invention are further described below in conjunction with specific examples:

as shown in fig. 1, 2 and 3, the automatic group-changing rotary pay-off machine for the double-twisting machine comprises a large disc 1, a power bracket 2, an open clamping cylinder assembly 3, a positioning pin assembly 4, a motor sliding seat assembly 5, a sensor assembly 6, a toothed belt wheel 7, a large gear 9, a toothed belt 10, a large disc two 11, a flying disc assembly 12, a riding wheel 13, a wire wheel rotating frame 14, a single-strand spool 15, a core wire frame 16, a core strand spool 17, a clutch 18, a transmission shaft 19, a brake disc 20, a brake air brake 21 and a rotary main shaft 22, wherein the rotary main shaft 22 is arranged on the power bracket 2 through a bearing, and the riding wheel 13 is used for supporting the large disc two 11. The large disc I1, the large gear 9 and the large disc II 11 are fixed on the rotary main shaft 22 and perform rotary motion together; the plurality of flying disc assemblies 12 are respectively arranged on the large disc 1 and the large disc 2 through bearings, the flying disc assemblies 12 are fixedly connected with the toothed belt wheels 7 and driven to rotate through the toothed belt wheels 7, the plurality of toothed belt wheels 7 are in transmission connection with the toothed belt 10, the wire wheel rotating frame 14 is arranged between the 2 groups of flying disc assemblies 12 which are oppositely arranged through the bearings 1203 (see figure 8), the flying disc assemblies 12 do rotary motion around the wire wheel rotating frame 14, and the clamping opening cylinder assembly 3 is fixed on the power bracket 2 and is used for clamping the toothed belt 10 so as to realize clamping braking on the toothed belt 10. The locating pin assembly 4 is fixed on the power bracket 2, and locks the big disc 1 through the plug-in action, so that the action of locking the position of the big disc 1 is realized. The sensor assembly 6 is fixed on the power bracket 2 and is used for sensing the rotation position of the toothed belt wheel 7 and sending a braking signal to the braking air brake 21, the core wire frame 16 is fixed on the power bracket 2, the core wire frame 17 is rotationally moved on the core wire frame 16 through the wire releasing shaft, the single-strand spool 15 is rotationally moved on the spool rotating frame 14 through the wire releasing shaft 1401 (see fig. 8), the motor sliding seat assembly 5 is fixed on the power bracket 2, power is transmitted to the transmission shaft 19 through the clutch 18 and is used for driving one of the toothed belt wheels 7 to rotate, the braking disc 20 is fixed on the transmission shaft 19, and the braking air brake 21 realizes the clamping action on the braking disc 20.

The number of the toothed belt wheels 7 is one more than that of the flying disc assemblies, one toothed belt wheel 7 is fixed on the transmission shaft 19, rotates and stops with the transmission shaft 19 in a one-pass way, and transmits power to other toothed belt wheels 7 through the toothed belt 10.

The toothed pulley 7 to which the sensor assembly 6 corresponds and senses position is the toothed pulley 7 connected to the drive shaft 19.

Referring to fig. 4, the opening cylinder assembly 3 includes an opening gas, 301, a cylinder seat 302, an opening key 303, positioning clamps 304, clamp jaws 305, a first screw 306, a clamp spring 307, a clamp seat 304 and a clamp pin 309, the opening cylinder 301 is fixed on the cylinder seat 302, the opening key 303 is fixed on the opening cylinder 301, when the opening cylinder 301 performs extending and retracting movements, the opening key 303 is driven to move together, a chute 310 is opened on the cylinder seat 302, the opening key 303 performs linear movement in the chute 310, the clamp jaws 305 are fixed on the positioning clamps 304 through the first screw 306, the positioning clamps 304 are two and are oppositely arranged, the positioning clamps 304 are hinged on the clamp seat 308 through the clamp pin 309, the clamp spring 307 is connected between the two positioning clamps 304, the clamp seat 308 is fixed on the first large disc 1, and the toothed belt 10 passes through the middle of the clamp jaws 305 which are oppositely arranged.

When the clamping opening key 303 extends, the clamping opening key 303 is inserted between two oppositely arranged positioning clamps 304, the two positioning clamps 304 are spread, an open slot is formed in the middle of the clamping opening key 303, and at the moment, the toothed belt 10 can pass through the open slot between the two pairs of clamping jaws 305 and the middle of the clamping opening key 303; when the clamp opening key 303 is retracted, the clamp opening key 303 is withdrawn from the two oppositely disposed positioning clamps 304, and the two positioning clamps 304 are snapped together under the action of the clamp springs 307, at which time the toothed belt 10 is clamped by the two pairs of clamp jaws 305.

Referring to fig. 5, the locating pin assembly 4 comprises a locating cylinder 401, a cylinder shaft lever 402, a transition flange 403, a locating pin outer sleeve 404, a large disc locating pin 405 and a locating sleeve 406, wherein the locating cylinder 401 is fixed on the locating pin outer sleeve 404 through the transition flange 403, the locating pin outer sleeve 404 is fixed on the power bracket 2, the large disc locating pin 405 is fixed on the cylinder shaft lever 402, and the locating pin outer sleeve 404 performs linear motion, and the locating sleeve 406 is fixed on the large disc 1 and rotates along with the large disc 1.

Referring to fig. 6, the motor slider assembly 5 includes a motor slider 503, an adjusting nut 505, a spring guide pillar 506, a clutch spring 507, a spring pad 508, a nut 509, a main motor 510, a clutch cylinder 511, and a top cover 512, wherein the main motor 510 is fixed on the motor slider 503, the clutch 18 is fixed on the main motor 510, the adjusting nut 505 is connected with one end of the spring guide pillar 506 through threads, a shoulder at the other end of the spring guide pillar 506 is matched with the nut 509, the spring guide pillar 506 is locked on the power bracket 2, the spring guide pillar 506 passes through the motor slider 503 and is slidably connected with the motor slider 503, the clutch spring 507 is sleeved on the spring guide pillar 506, one end of the clutch spring 507 is propped against the adjusting nut 505, the other end of the clutch spring 507 is propped against the motor slider 503, the clutch spring 507 is tightly pressed by screwing the adjusting nut 505, the clutch cylinder 511 is fixed on the motor slider 503, the top cover 512 is fixed on the clutch cylinder 511, and sliding guide mechanisms are arranged at two sides of the main motor 510. When the top cover 512 is extended, the power bracket 2 is pressed tightly, the motor slide 503 is reversely ejected, and the main motor 510 is separated from the transmission shaft 19 through the clutch 18.

The sliding guide mechanism comprises a screw II 501, a linear bearing 502 and a guide bar 504, wherein the linear bearing 502 is fixed on a motor slide 503 through the screw II 501, the guide bar 504 is fixed on the power bracket 2, the linear bearing 502 moves linearly on the guide bar 504,

referring to fig. 7, the sensor assembly 6 includes a sensor cylinder 601, a sensor cylinder rod 602, a sensor bracket 603, a sensor sleeve 604, a displacement sensor 605, a thin nut 606, and sensor pins 607, wherein the sensor cylinder 601 is fixed on the sensor bracket 603 through an end screw thread, the sensor bracket 603 is fixed on the power bracket 2, the displacement sensor 605 is fixed on the sensor sleeve 604 through a screw thread, the thin nut 606 is used for locking the position of the displacement sensor 605, the sensor sleeve 604 is fixed on the sensor cylinder rod 602 through a screw thread, and the sensor pins 607 are extended and retracted together with the sensor cylinder rod 602, and the sensor pins 607 are 2 and are uniformly arranged and fixed on the toothed belt wheel 7.

The displacement sensor 605 senses the position of the sensing pin 607, triggers the brake air brake 21 to brake the transmission shaft 19, and enables the toothed belt wheel 7 to stop rotating, wherein the position is a position where the mechanical arm changes the group of the paying-off machine, and when the toothed belt wheel 7 stops rotating, the thread passing nozzle 1201 (thread passing channel) is level relative to the thread wheel rotating frame 14.

Referring to fig. 1 and 3, the large gear 9 is driven to rotate by a servo motor 8, the servo motor 8 is fixed on the power bracket 2, a motor gear 801 is fixed on the shaft end of the servo motor 8, and the motor gear 801 is meshed with the large gear 9 for transmission.

Referring to fig. 8, flying disc assembly 12 includes a wire guide 1201 and a flying disc 1202, and wire guide 1201 is fixed to both sides of flying disc 1202 and rotates with flying disc 1202.

A group changing method of an automatic group changing rotary paying-off machine for a double twisting machine comprises the following steps:

1) When the paying-off single strand reaches a fixed length, the system automatically sends out a deceleration stop instruction;

2) When the speed of the flying disc assembly 12 is reduced to a set value, a sensing cylinder 601 in the sensor assembly 6 extends out of a sensing cylinder rod 602, so that a displacement sensor 605 approaches a sensing pin 607 and further senses the position of the toothed belt wheel 7 at which rotation is stopped, the displacement sensor 605 slowly approaches the sensing pin 607, and when the sensing distance is entered, a signal of a brake air brake 21 is generated;

3) The brake air brake 21 clamps the brake disc 20, the brake air brake 21 is released after clamping for 5 seconds, at the moment, the flying disc assembly 12 stops rotating, the stop position is the group changing position of the flying disc assembly 12, a wire passing channel of the group changing position is relatively horizontal to the position of the wire wheel rotating frame 14, and the sensing cylinder 601 is retracted to the sensing cylinder rod 602;

the wire passing channel is relatively horizontal to the wire wheel rotating frame 14, so that the single-strand spool 15 can be conveniently replaced by a manipulator; in the position replacement group, the robot does not interfere with the wire passing channel when replacing the single-strand spool 15;

4) The clamping opening cylinder 301 drives the clamping opening key 303 to retract, and the positioning clamp 304 drives the clamping jaw 305 to clamp the toothed belt 10 under the action of the clamp spring 307, so that the flying disc assembly 12 cannot rotate freely at the moment, and the positions of the wire passing channel and the wire wheel rotating frame 14 are relatively fixed;

5) The clutch cylinder 511 extends out, the top sleeve 512 contacts with the power bracket 2, the motor slide 503 is pushed to slide reversely, the main motor 510 slides together with the clutch 18, and the main motor 510 is separated from the transmission system in a clutch mode;

6) The positioning cylinder 401 is retracted, the cylinder shaft rod 402 drives the big disc positioning pin 405 to retract, and the positioning of the big disc 1 is released;

7) The servo motor 8 drives the motor gear 801 to rotate, the motor gear 801 drives the large gear 9 to rotate, and power is transmitted to the rotary main shaft 22; under the drive of the servo motor 8, the rotary main shaft 22 slowly rotates, so that the large disc I1 and the large disc II 11 are driven to rotate and position together;

8) After each single-strand spool 15 is replaced by the manipulator, the servo motor 8 drives the rotating main shaft 22 to rotate, the large disc I1 and the large disc II 11 slowly rotate, and the other spool truck 14 rotates to a group replacing position; when the large disc I1 rotates, the wire wheel rotating frame 14 is always kept horizontal, and the flying disc 1202 and the wire wheel rotating frame 14 can rotate relatively; when each wire wheel rotating frame 14 rotates to the group changing position, the wire passing channel and the wire wheel rotating frame 14 keep the same horizontal position, so that group changing is facilitated;

9) When all single-strand group changing work is finished, an operator needs to confirm on site and sends out a starting-up reset instruction;

10 The servo motor 8 drives the rotary main shaft 22 to reversely rotate, and the first large disc 1 and the second large disc 11 recover to the original positions, so that the positions of the single-strand wire outlet channel and the wire collecting and distributing disc are correspondingly recovered;

11 Positioning cylinder 4 extends, cylinder shaft rod 402 drives big disc positioning pin 405 to extend, positioning pin 405 is inserted into positioning sleeve 406, so that big disc one 1 is locked;

12 A clamping opening cylinder 301 drives a clamping opening key 303 to extend, and the clamping opening key 303 expands to position a clamp 304 so that a clamp jaw 305 cannot clamp the toothed belt 10;

13 The clutch cylinder 511 is retracted, and the motor slider 503 slides forward under the action of the clutch spring 507; the main motor 510 slides with the clutch 18, enabling the main motor 510 to engage the drive train;

14 The operator confirms on site and sends out a starting command.

Claims (8)

1. The automatic group-changing rotary paying-off machine for the double-twisting machine is characterized by comprising a large disc I, a power bracket, an opening and clamping cylinder assembly, a positioning pin assembly, a motor sliding seat assembly, a sensor assembly, a tooth-shaped belt pulley, a large gear, a tooth-shaped belt, a large disc II, a flying disc assembly, a wire wheel rotating frame, a single-strand spool, a core wire frame, a core strand spool, a clutch, a transmission shaft, a brake disc, a brake air brake and a rotary main shaft, wherein the rotary main shaft is fixed on the power bracket through a bearing; the positioning pin assembly is fixed on the power bracket, and locks the first large disc through plugging action; the sensor assembly is fixed on the power bracket and used for sensing the rotation position of the toothed belt wheel and sending a braking signal to the braking air brake, the core wire frame is fixed on the power bracket, the core strand spool is rotationally moved on the core wire frame through the pay-off shaft, the single strand spool is rotationally moved on the wire wheel rotating frame through the pay-off shaft, the motor sliding seat assembly is fixed on the power bracket and used for transmitting power to the transmission shaft through the clutch and used for driving one of the toothed belt wheels to rotate, the braking disc is fixed on the transmission shaft, and the braking air brake realizes the clamping action on the braking disc.

2. The automatic group-changing rotary paying-off machine for double twisting machines according to claim 1, wherein the opening cylinder assembly comprises an opening cylinder, a cylinder seat, an opening key, positioning clamps, clamp jaws, a first screw, a clamp spring, a clamp seat and a clamp pin shaft, the opening cylinder is fixed on the cylinder seat, the opening key is fixed on the opening cylinder, when the opening cylinder moves in an extending and retracting mode, the opening key is driven to move together, a sliding groove is formed in the cylinder seat, the opening key moves in a straight line mode in the sliding groove, the clamp jaws are fixed on the positioning clamps through the first screw, the positioning clamps are oppositely arranged, the positioning clamps are hinged on the clamp seat through the clamp pin shaft, the clamp spring is connected between the two positioning clamps, the clamp seat is fixed on the first large disc, and the toothed belt penetrates through the middle of the clamp jaws oppositely arranged.

3. The automatic group-changing rotary paying-off machine for double twisting machines according to claim 1, wherein the positioning pin assembly comprises a positioning cylinder, a cylinder shaft rod, a transition flange, a positioning pin jacket, a large disc positioning pin and a positioning sleeve, the positioning cylinder is fixed on the positioning pin jacket through the transition flange, the positioning pin jacket is fixed on the power bracket, the large disc positioning pin is fixed on the cylinder shaft rod and moves linearly in the positioning pin jacket, and the positioning sleeve is fixed on the large disc and rotates along with the large disc.

4. The automatic group-changing rotary paying-off machine for double twisting machines according to claim 1, wherein the motor sliding seat assembly comprises a motor sliding seat, an adjusting nut, a spring guide pillar, a clutch spring, a spring pad sleeve, a nut, a main motor, a clutch cylinder and a top sleeve, the main motor is fixed on the motor sliding seat, the clutch is fixed on the main motor, the adjusting nut is connected with one end of the spring guide pillar through threads, a shaft shoulder at the other end of the spring guide pillar is matched with the nut to lock the spring guide pillar on a power bracket, the spring guide pillar penetrates through the motor sliding seat and is in sliding connection with the motor sliding seat, the clutch spring is sleeved on the spring guide pillar, one end of the clutch spring is propped against the adjusting nut, the other end of the clutch spring is propped against the motor sliding seat, the clutch spring is compressed by screwing the adjusting nut, the clutch cylinder is fixed on the motor sliding seat, the top sleeve is fixed on the clutch cylinder, the top sleeve extends and retracts along with the cylinder, and sliding guide mechanisms are arranged at two sides of the main motor.

5. The automatic group-changing rotary paying-off machine for a double twisting machine according to claim 1, wherein the sensor assembly comprises a sensing cylinder, a sensing cylinder rod, a sensing bracket, a sensing sleeve, a displacement sensor and sensing pins, the sensing cylinder is fixed on the power bracket through the sensing bracket, the displacement sensor is fixed on the sensing sleeve, the sensing sleeve is fixed on the sensing cylinder rod, the sensing sleeve and the sensing cylinder rod extend and retract together, and the sensing pins are 2 and uniformly arranged and fixed on the toothed belt wheel.

6. The automatic group-changing rotary pay-off machine for double twisting machines according to claim 1, wherein the large gear is driven to rotate by a servo motor, the servo motor is fixed on a power bracket, a motor gear is fixed on a motor shaft end of the servo motor, and the motor gear is meshed with the large gear for transmission.

7. The automatic group-changing rotary pay-off machine for double twisting machines according to claim 1, wherein the flying disc assembly comprises a wire passing nozzle and a flying disc, and the wire passing nozzle is fixed on two sides of the flying disc and rotates together with the flying disc.

8. A group changing method of an automatic group changing rotary pay-off machine for a double twisting machine according to any one of claims 1 to 7, comprising:

1) When the single strand of paying-off reaches a fixed length, the system sends out a deceleration stop instruction;

2) When the speed of the flying disc assembly is reduced to a set value, a sensing cylinder in the sensor assembly extends out of a sensing cylinder rod, so that a displacement sensor approaches to a sensing pin, and further the position of the tooth-shaped belt wheel stopping rotating is sensed, the displacement sensor approaches to the sensing pin, and when the sensing distance is entered, a signal of a brake air brake occurs;

3) The brake air brake clamps the brake disc, the flying disc assembly stops rotating, the stop position is a group changing position of the flying disc assembly, a wire passing channel of the group changing position is relatively horizontal to a wire wheel truck position, and the sensing cylinder retracts to the sensing cylinder rod;

4) The clamping opening cylinder drives the clamping opening key to retract, the positioning clamp drives the clamp jaw to clamp the toothed belt under the action of the clamp spring, at the moment, the flying disc assembly cannot rotate freely, and the positions of the wire passing channel and the wire wheel rotating frame are relatively fixed;

5) The clutch cylinder stretches out, the top sleeve is contacted with the power bracket, the motor sliding seat is reversely pushed to slide, the main motor slides together with the clutch, and the clutch separation of the main motor and the transmission system is realized;

6) The positioning cylinder retracts, the cylinder shaft lever drives the positioning pin of the large disc to retract, and the positioning of the first large disc is released;

7) The servo motor drives a motor gear to rotate, and the motor gear drives a large gear to rotate so as to transmit power to the rotating main shaft; under the drive of a servo motor, the rotary main shaft rotates, so that the large disc I and the large disc II are driven to rotate and position together;

8) After each single-strand spool is replaced, the servo motor drives the rotary main shaft to rotate, the large disc I and the large disc II rotate, and the other spool is turned to a group replacing position; when the large disc rotates, the wire wheel rotating frame is always kept horizontal, and the flying disc and the wire wheel rotating frame can rotate relatively; when each wire wheel truck rotates to the group changing position, the wire passing channel can keep the same horizontal position with the wire wheel truck;

9) When the group replacement work of all single strands is finished, starting up and resetting are carried out;

10 A servo motor drives the rotary main shaft to reversely rotate, and the primary disc and the secondary disc recover to the original positions, so that the positions of the single-strand wire outlet channel and the wire collecting and distributing disc are correspondingly recovered;

11 The positioning cylinder stretches out, the cylinder shaft rod drives the positioning pin of the large disc to stretch out, and the positioning pin is inserted into the positioning sleeve, so that the large disc is locked at a first position;

12 The clamping opening cylinder drives the clamping opening key to extend out, and the clamping opening key expands to position the clamp, so that the clamp jaw cannot clamp the toothed belt;

13 The clutch cylinder is retracted, and the motor sliding seat positively slides under the action of the clutch spring; the main motor and the clutch slide together to realize the joint of the main motor and the transmission system;

14 Boot-up.