Multi-twist spinning device and spinning method

Abstract

The invention relates to the technical field of spinning machines, in particular to a multi-twist spinning device and a spinning method.The multi-twist spinning device comprises a plurality of sets of racks arranged side by side and spinning equipment arranged on the inner sides of the racks, the spinning equipment comprises a wind-up roller, a roller, a first yarn guide, a waxing assembly arranged on the first yarn guide, a twisting mechanism arranged at the bottoms of the racks and a second yarn guide arranged on the bottom of the rack, the second yarn guide is arranged between the first yarn guide and the twisting mechanism. The two first clamping arms and the two second clamping arms are arranged. After the second yarn guide exerts tension on the yarn, the first yarn guide feeds the yarn through reciprocating motion, the clamping arms are arranged between the first yarn guide and the second yarn guide and between the second yarn guide and the twisting mechanism, the broken yarn end can be rapidly clamped when the yarn is broken, the broken yarn is prevented from freely waving in the equipment and being wound around other operating parts, and the yarn breaking efficiency is improved. And meanwhile, the yarn breaking position is fixed, so that a worker can splice conveniently, the shutdown maintenance time of equipment is shortened, and the production efficiency is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of spinning machines, in particular to a multi-twist spinning device and a spinning method. BACKGROUND

[0002] Yarn is a linear assembly formed by short fibers or filament bundles that are interlocked or entangled, having certain physical and appearance properties and being suitable for weaving processing. Twisting is a necessary means of yarn formation and is also a necessary means for yarn to have stability and usability. It is the most important link in the yarn forming process. The twisting action directly affects the yarn structure and almost all the physical and mechanical properties of the yarn and the performance of the corresponding fabric. Ring spinning, which realizes twisting through spindle rotation, is the most traditional spinning method and is the most commonly used spinning method on the market today, with very mature technology. Although many new spinning technologies with high production efficiency and short process flow have appeared, such as rotor spinning, air jet spinning, especially air jet spinning, which uses high-speed rotating airflow to make the fiber bundle twist and wrap into yarn and completely changes the twisting mechanism of ring spinning, these new spinning methods still cannot replace ring spinning in terms of raw material applicability and overall yarn quality. Therefore, ring spinning is still the most important spinning method in modern spinning production.

[0003] As the patent with application number CN201810336693.X discloses a double-twist spinning device, which comprises a drafting system and a first twisting and winding mechanism; a second twisting mechanism is arranged between the drafting system and the twisting and winding mechanism. The second twisting mechanism comprises a yarn winding drum and an annular ring; the yarn winding drum is sleeved with a fixed drum outside, and the yarn winding drum rotates freely in the fixed drum; a plurality of blades are fixedly connected to the yarn winding drum inside the fixed drum; the fixed drum has a negative pressure inlet and a negative pressure outlet at the upper and lower parts, respectively; the annular ring is sleeved on the outer circumference of the lower part of the yarn winding drum extending out of the fixed drum; the annular ring is a circular ring structure, and the annular ring is provided with a winding ring which can freely slide along the outer circumference of the annular ring.

[0004] Twisting equipment uses tension rollers, rollers, and other wheel mechanisms to guide the yarn. During yarn feeding, if the equipment suddenly stops, the contact points between the yarn and the tensioning components, or the weak points between the yarn and other parts of the twisting equipment, are easily broken due to the impact force. If the rollers continue to rotate, they will carry the yarn end with them, causing the yarn end to be lost or tangled. To improve yarn threading efficiency, traditional twisting spinning equipment installs a pneumatic yarn suction device. When threading the yarn, the yarn bobbin is manually fixed to the yarn bobbin seat of the twisting mechanism, and the yarn end is manually placed into the yarn inlet guide groove of the equipment. The pneumatic yarn suction device will then suck the yarn from the guide groove, allowing the yarn to automatically pass through the guide holes and guide rollers according to a preset path. In this process, manual assistance is still required to complete the yarn threading. When the yarn end is lost or tangled, it will increase the difficulty of maintenance and affect production efficiency. Summary of the Invention

[0005] To address the aforementioned problems, this invention proposes a multi-twist spinning device and spinning method to overcome the shortcomings of existing methods.

[0006] To achieve the objectives of this invention, the invention is implemented through the following technical solution: a multi-twist spinning device, comprising multiple sets of frames arranged side by side and textile equipment disposed inside the frames, the textile equipment comprising:

[0007] The take-up roller and the roller are rotatably connected at both ends to the frame. A drum is fitted on the outside of the take-up roller, and the roller is placed on one side of the drum.

[0008] The first yarn guide is located directly in front of the roller and guides the twisted yarn between the drum and the roller through horizontal reciprocating motion. The first yarn guide is equipped with a waxing component.

[0009] The twisting mechanism, located at the bottom of the frame, is used to place the yarn bobbin and apply twist to the yarn;

[0010] The second yarn guide is located between the first yarn guide and the twisting mechanism, and is used to apply tension to the twisted yarn;

[0011] Two first clamping arms and two second clamping arms are respectively located between the first yarn guide and the second yarn guide, and between the second yarn guide and the twisting mechanism. The yarn passes through the two second clamping arms and the two first clamping arms in sequence. The inner side of the frame is provided with a control component for controlling the opening and closing of the first clamping arms and the second clamping arms after the yarn breaks.

[0012] Further improvement lies in that the first yarn guide comprises a reciprocating screw rod and a positioning bracket, the reciprocating screw rod is rotatably connected to the frame at both ends, the positioning bracket is sleeved outside the reciprocating screw rod and is threadedly connected with the reciprocating screw rod, a traction guide wheel is arranged at the lower end of the positioning bracket, a yarn guide bracket is arranged at the upper end of the positioning bracket, the yarn guide bracket is hingedly connected with the positioning bracket, a first yarn guide hole is arranged at the upper end of the yarn guide bracket, a second yarn guide hole is arranged at the lower end of the yarn guide bracket, and a tension adjusting mechanism for adjusting the angle of the yarn guide bracket is arranged below the traction guide wheel.

[0013] Further improvement lies in that the tension adjusting mechanism comprises a limiting plate and a first air push rod, the limiting plate is arranged below the traction guide wheel, the upper end of the limiting plate is fixedly connected with the lower end of the positioning bracket, a first clamping arm is arranged between the limiting plate and the yarn guide bracket, the mounting end of the first air push rod is hingedly connected with the limiting plate, and the output end of the first air push rod is hingedly connected with the lower end of the yarn guide bracket.

[0014] Further improvement lies in that the second yarn guide comprises a mounting plate and a rotating shaft, the rotating shaft is rotatably connected to the frame at both ends, a front guide wheel is sleeved outside the rotating shaft, the mounting plate is fixedly connected to the frame at both ends, a spring bracket and a wire bracket are arranged at the lower end of the mounting plate, a rear guide wheel is arranged at the end of the spring bracket close to the mounting plate, a tensioning wheel is arranged at the end of the spring bracket away from the mounting plate, the tensioning wheel is arranged below the front guide wheel, the wire bracket is provided with a third yarn guide hole at the end away from the mounting plate, and the third yarn guide hole is arranged between the tensioning wheel and the front guide wheel.

[0015] Further improvement lies in that the twisting mechanism comprises a spindle, a twisting disc for fixing a yarn drum is sleeved outside the spindle, the spindle has a through hole in the inside, a fourth yarn guide hole is arranged at the lower end of the spindle, the fourth yarn guide hole is in communication with the through hole in the inside of the spindle, a spindle pot is sleeved outside the spindle, the spindle pot is fixedly connected with the spindle, a fifth yarn guide hole is arranged at the outside of the spindle pot, the fifth yarn guide hole is arranged at one side of the fourth yarn guide hole, and a motor rotating shaft is arranged at the lower end of the twisting disc.

[0016] Further improvement lies in that the waxing assembly comprises a mounting groove arranged at the upper end of the yarn guide bracket, the mounting groove is arranged at the side of the yarn guide bracket facing the roller, a wax block is fixedly arranged in the mounting groove, and the wax block abuts against one side of the outer wall of the roller.

[0017] Further improvement lies in that the control assembly comprises a first power clamp, a second power clamp and a detection module for detecting yarn breakage, the first power clamp is fixedly connected with the positioning bracket through a connecting plate and is used for controlling the opening and closing of the two first clamping arms, the second power clamp is fixedly connected with the spring bracket through a connecting plate and is used for controlling the opening and closing of the two second clamping arms.

[0018] Further improvement lies in that the first power clamp and the second power clamp each comprise a clamping base, one end of the clamping base is provided with a second air push rod, the mounting end of the second air push rod is fixedly connected with the clamping base, the other end of the clamping base is provided with two movable arms, the movable arms are rotationally connected with cylindrical pins arranged on the left and right sides of the clamping base, one end of the movable arms extends to the inner side of the clamping base and is hingedly connected with the output end of the second air push rod, the other end of the movable arms is hingedly connected with the second clamp arm or the first clamp arm, two link rods are arranged between the two movable arms, one end of the link rods is hingedly connected with the clamping base, and the other end of the link rods is hingedly connected with the second clamp arm or the first clamp arm.

[0019] Further improvement lies in that the detection module comprises a plurality of pressure sensors and a plurality of pattern detection probes, the pressure sensors are arranged at the connection positions of the tensioning wheel and the spring support, the front guide wheel and the rotating shaft and the traction guide wheel and the positioning support, are used for monitoring the pressure of the tensioning wheel, the front guide wheel and the traction guide wheel and the yarn, and feeding data signals to the central control system, and the pattern detection probes are distributed and arranged on the inner side of the rack, are used for monitoring the yarn conveying condition, and feeding pattern information to the central control system.

[0020] A spinning method of a multi-twist spinning device, comprising the following steps:

[0021] Step one, fix the yarn barrel to be twisted on the twisting mechanism, and apply twist to the yarn through the twisting mechanism;

[0022] Step two, the twisted yarn is first pulled through the second yarn guide, the first yarn guide feeds the yarn through reciprocating motion after the second yarn guide applies tension to the yarn, and the yarn is guided between the winding drum and the roller, so that the yarn is evenly distributed along the winding drum axis during winding;

[0023] Step three, the waxing assembly applies wax to the roller;

[0024] Step four, when the detection module detects yarn breakage, the central control system sends instructions to the control assembly, and the control assembly drives the two first clamp arms and the two second clamp arms to close, and clamps and fixes the two ends of the broken yarn.

[0025] Compared with the prior art, the beneficial effects of the present application are:

[0026] After the second yarn guide applies tension to the yarn, the first yarn guide feeds the yarn through reciprocating motion, the clamp arms are arranged between the first yarn guide and the second yarn guide, the second yarn guide and the twisting mechanism, can quickly clamp the broken yarn end when the yarn breaks, avoid the broken yarn to randomly float and wind to other running parts inside the equipment, reduce the difficulty of subsequent cleaning, at the same time, through fixing the position of the broken yarn, facilitate the staff to make joint, shorten the equipment downtime maintenance time, improve the production efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed in the embodiment description. Obviously, the drawings in the following description only some of the embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor.

[0028] Figure 1 is the structural diagram of the rack in the present application.

[0029] Figure 2 is the structural diagram of the winding drum in the present application.

[0030] Figure 3 is the structural diagram of the traction guide wheel in the present application.

[0031] Figure 4 is the structural diagram of the guide wire support in the present application.

[0032] Figure 5 is the structural diagram of the front guide wheel in the present application.

[0033] Figure 6 is the structural diagram of the rear guide wheel in the present application.

[0034] Figure 7 is the structural diagram of the first clamping arm in the present application.

[0035] Figure 8 is the structural diagram of the second clamping arm in the present application.

[0036] Figure 9 is the structural diagram of the spindle in the present application.

[0037] Figure 10 is the structural diagram of the wax block in the present application.

[0038] Wherein: 1, rack; 2, power box; 3, winding roller; 4, winding drum; 5, roller; 6, twisting mechanism; 7, mounting plate; 8, rotating shaft; 9, reciprocating screw; 10, limiting rod; 11, positioning support; 12, guide wire support; 13, first clamping arm; 14, front guide wheel; 15, spring support; 16, second clamping arm; 17, traction guide wheel; 18, limiting plate; 19, sliding sleeve; 20, first guide wire hole; 21, wax block; 22, first power clamp; 23, first air push rod; 24, second guide wire hole; 25, second power clamp; 26, rear guide wheel; 27, wire support; 28, third guide wire hole; 29, tensioning wheel; 30, rubber strip; 31, clamping seat; 32, movable arm; 33, connecting rod; 34, cylindrical pin; 35, second air push rod; 37, twisting disc; 38, spindle pot; 39, yarn drum; 40, spindle; 41, fourth guide wire hole; 42, fifth guide wire hole; 43, motor rotating shaft; 44, pattern detection probe; 45, circular arc chamfer. DETAILED DESCRIPTION

[0039] In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some but not all of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0040] According to Figure 1 , 2 , 3, 4, 5, 6, 7, 8, 9, 10, the present embodiment proposes a multi-twist spinning device, which comprises multiple groups of racks 1 arranged side by side and textile equipment arranged inside the racks 1, and the textile equipment comprises:

[0041] A winding roller 3 and a roller 5, both ends of the winding roller 3 and the roller 5 are rotationally connected with the rack 1, the winding roller 3 is sleeved with a winding drum 4 outside, and the roller 5 is arranged on one side of the winding drum 4, for applying a pulling force to the twisted yarn;

[0042] A first yarn guide is arranged in front of the roller 5, and the twisted yarn is guided to the space between the winding drum 4 and the roller 5 through horizontal reciprocating motion, and a waxing assembly is arranged on the first yarn guide;

[0043] A twisting mechanism 6 is arranged at the bottom of the rack 1, for placing a yarn drum 39 and applying twist to the yarn;

[0044] A second yarn guide is arranged between the first yarn guide and the twisting mechanism 6, for applying tension to the twisted yarn;

[0045] The yarn drum 39 to be twisted is fixed on the twisting mechanism 6, the twist is applied to the yarn by the twisting mechanism 6, the twisted yarn is first pulled through the second yarn guide, the second yarn guide applies tension to the yarn, the first yarn guide sends the yarn through reciprocating motion, and the yarn is guided to the space between the winding drum 4 and the roller 5, so that the yarn is evenly distributed along the axial direction of the winding drum 4 during winding, the waxing assembly applies wax to the roller, reduces the friction between the roller 5 and the yarn, and improves the quality of the yarn.

[0046] Two first clamping arms 13 and two second clamping arms 16 are arranged between the first yarn guide and the second yarn guide, the second yarn guide and the twisting mechanism 6 respectively, the yarn passes through the two second clamping arms 16 and the two first clamping arms 13 in sequence, and a control assembly for controlling the opening and closing of the first clamping arm 13 and the second clamping arm 16 after the yarn is broken is arranged inside the rack 1.

[0047] When normal spinning is carried out, the two first clamping arms 13 and the two second clamping arms 16 are kept slightly open, and the yarn can pass through smoothly; when the detection module detects yarn breakage, the central control system sends a command to the control assembly, which drives the two first clamping arms 13 and the two second clamping arms 16 to close, clamping and fixing the two ends of the broken yarn. When the yarn is broken, the broken end is quickly clamped to avoid the broken yarn randomly floating and winding around other running parts inside the equipment, reducing the difficulty of subsequent cleaning, and at the same time, by fixing the position of the broken yarn, the worker can easily make a joint, shorten the equipment downtime maintenance time, and improve the production efficiency.

[0048] A power box 2 is arranged outside the frame 1, and a transmission group for controlling the rotation of each roller shaft is installed in the power box 2. The transmission group uses a motor as the drive and cooperates with a belt transmission structure to realize the rotation control of each roller shaft.

[0049] Regarding the first yarn guide:

[0050] The first yarn guide includes a reciprocating lead screw 9 and a positioning bracket 11. The reciprocating lead screw 9 is rotatably connected to the frame 1 at both ends, and the positioning bracket 11 is sleeved outside the reciprocating lead screw 9 and is threadedly connected with the reciprocating lead screw 9. The positioning bracket 11 is provided with a traction guide wheel 17 at the lower end and a yarn guide bracket 12 at the upper end. The yarn guide bracket 12 is hingedly connected to the positioning bracket 11. The yarn guide bracket 12 is provided with a first yarn guide hole 20 at the upper end and a second yarn guide hole 24 at the lower end. The traction guide wheel 17 is provided below the tension adjusting mechanism for adjusting the angle of the yarn guide bracket 12.

[0051] The motor in the power box 2 drives the reciprocating lead screw 9 to rotate. Since the positioning bracket 11 is threadedly connected with the reciprocating lead screw 9, the positioning bracket 11 will rotate with the lead screw to realize horizontal reciprocating movement. When feeding the yarn, the yarn will pass through the second yarn guide hole 24, the first yarn guide hole 20 and the traction guide wheel 17 in turn. The traction guide wheel 17 moves along the axis of the winding drum 4 under the drive of the positioning bracket 11 to uniformly wind the yarn outside the winding drum 4. The traction guide wheel 17 assists in supporting the yarn, which can reduce the friction between the yarn and the yarn guide hole. The tension adjusting mechanism adjusts the wrap angle of the yarn at the yarn guide hole by changing the setting angle of the yarn guide bracket 12 to realize the fine adjustment of the yarn tension.

[0052] More specifically, the tension adjusting mechanism includes a limiting plate 18 and a first air push rod 23. The limiting plate 18 is arranged below the traction guide wheel 17, and the upper end of the limiting plate 18 is fixedly connected with the lower end of the positioning bracket 11. The first clamping arm 13 is arranged between the limiting plate 18 and the yarn guide bracket 12. The first air push rod 23 is hingedly connected with the limiting plate 18 at the installation end, and the output end of the first air push rod 23 is hingedly connected with the lower end of the yarn guide bracket 12.

[0053] The limiting plate 18 provides support for the first air push rod 23. When the yarn tension needs to be adjusted, the central control system controls the first air push rod 23 to extend and retract, pushing the guide bracket 12 to rotate around the hinge point with the positioning bracket 11, thereby changing the inclination angle of the guide bracket 12. The guide bracket 12 changes the contact length and wrap angle of the yarn at the first guide hole 20 and the second guide hole 24 through the change in angle, thereby adjusting the tension of the yarn. In cooperation with the pressure sensor, dynamic adjustment of the yarn tension is realized.

[0054] In the preferred scheme, a limiting rod 10 is arranged below the reciprocating lead screw 9, the two ends of the limiting rod 10 are fixedly connected with the rack 1, a sliding sleeve 19 is sleeved outside the limiting rod 10, the sliding sleeve 19 is slidingly connected with the limiting rod 10, and the sliding sleeve 19 is fixedly connected with the lower end of the limiting plate 18.

[0055] When the reciprocating lead screw 9 rotates to drive the positioning bracket 11 to move, the limiting plate 18 slides along the limiting rod 10 through the sliding sleeve 19. The sliding sleeve 19 guides the positioning bracket 11 by cooperating with the limiting rod 10, thereby improving the stability of the horizontal movement of the positioning bracket 11 and preventing the guide wire position from deviating.

[0056] Regarding the first guide:

[0057] The second guide includes a mounting plate 7 and a rotating shaft 8, the two ends of the rotating shaft 8 are rotatably connected with the rack 1, the rotating shaft 8 is sleeved with a front guide wheel 14 outside, the two ends of the mounting plate 7 are fixedly connected with the rack 1, the mounting plate 7 is provided with a spring bracket 15 and a guide wire bracket 27 at the lower end, the spring bracket 15 is provided with a rear guide wheel 26 close to one end of the mounting plate 7, the spring bracket 15 is provided with a tensioning wheel 29 away from one end of the mounting plate 7, the tensioning wheel 29 is arranged below the front guide wheel 14, the guide wire bracket 27 is provided with a third guide hole 28 away from one end of the mounting plate 7, the third guide hole 28 is arranged between the tensioning wheel 29 and the front guide wheel 14, and the third guide hole 28 is staggered with the tensioning wheel 29 and the front guide wheel 14.

[0058] After the yarn is output from the twisting mechanism 6, it first passes through the third guide hole 28 for preliminary guidance, then changes direction by passing around the rear guide wheel 26, and then passes around the tensioning wheel 29 before being delivered to the first guide through the front guide wheel 14. The staggered arrangement of the guide wheels and the guide holes can lengthen the yarn delivery path and enhance the stability of the guidance, thereby preventing the yarn from slipping. The spring bracket 15 elastically supports the tensioning wheel 29. When the yarn tension fluctuates, the spring bracket 15 drives the tensioning wheel 29 to move up and down through elastic deformation, dynamically adjusts the yarn wrap angle to compensate for the tension deviation, and ensures the stability of the yarn tension. The spring bracket 15 is a commonly used structure as a tensioning member, which will not be described in detail here.

[0059] Regarding the twisting mechanism:

[0060] The twisting mechanism 6 comprises a spindle 40, the spindle 40 is sleeved with a twisting disc 38 for fixing a yarn bobbin 39 outside, the spindle 40 has a through hole inside, the spindle 40 is provided with a fourth guide hole 41 at the lower end, the fourth guide hole 41 is communicated with the through hole inside the spindle 40, the spindle 40 is sleeved with a spindle pot 38 outside, the spindle pot 38 is fixedly connected with the spindle 40, the spindle pot 38 is provided with a fifth guide hole 42 outside, the fifth guide hole 42 is arranged on one side of the fourth guide hole 41, and the twisting disc 38 is provided with a motor rotating shaft 43 at the lower end.

[0061] The yarn bobbin 39 to be twisted is fixed outside the spindle pot 38, the transmission group in the power box 2 drives the motor rotating shaft 43 to rotate, the motor rotating shaft 43 drives the twisting disc 38 and the spindle 40 to rotate synchronously, the yarn on the yarn bobbin 39 is unwound, and the yarn passes through the through hole inside the spindle 40, the fourth guide hole 41 and the fifth guide hole 42 in sequence, under the rotation of the spindle 40 and the twisting disc 38, the yarn is twisted around the spindle axis, so that the set twist is obtained, and the twisting process is completed.

[0062] It is worth noting that the waxing assembly comprises a mounting groove arranged at the upper end of the guide bracket 12, the mounting groove is arranged on the side of the guide bracket 12 facing the roller 5, and the wax block 21 is fixedly arranged in the mounting groove and abuts against one side of the outer wall of the roller 5.

[0063] The angle of the guide bracket 12 can be adjusted through the tension adjusting mechanism, so that the wax block 21 at the upper end of the guide bracket 12 is further attached to the roller 5, and the guide bracket 12 moves horizontally and reciprocally to uniformly coat the wax block on the surface of the roller 5, so as to form a lubricating film, and the wax layer lubricating film can reduce the friction damage of the yarn to the roller 5, reduce the hairiness and breakage rate of the yarn, and improve the quality of the yarn.

[0064] Regarding the control assembly:

[0065] The control assembly comprises a first power clamp 22, a second power clamp 25 and a detection module for detecting yarn breakage, the first power clamp 22 is fixedly connected with the positioning support 11 through a connecting plate and is used for controlling the opening and closing of the two first clamping arms 13, and the second power clamp 25 is fixedly connected with the spring support 15 through a connecting plate and is used for controlling the opening and closing of the two second clamping arms 16.

[0066] The power clamp is a conventional mechanical clamp for controlling the first clamping arm 13 or the second clamping arm 16.

[0067] Specifically, the first power clamp 22 and the second power clamp 25 each include a clamping seat 31, one end of the clamping seat 31 is provided with a second air push rod 35, the installation end of the second air push rod 35 is fixedly connected with the clamping seat 31, the other end of the clamping seat 31 is provided with two movable arms 32, the movable arms 32 are rotationally connected with the cylindrical pins 34 arranged on the left and right sides of the clamping seat 31, one end of the movable arms 32 extends to the inner side of the clamping seat 31 and is hingedly connected with the output end of the second air push rod 35, the other end of the movable arms 32 is hingedly connected with the second clamp arm 16 or the first clamp arm 13, two link rods 33 are arranged between the two movable arms 32, one end of the link rods 33 is hingedly connected with the clamping seat 31, and the other end of the link rods 33 is hingedly connected with the second clamp arm 16 or the first clamp arm 13.

[0068] When the clamp arms need to be closed, the output end of the second air push rod 35 is extended to push the movable arms 32 to rotate around the cylindrical pins 34; the movable arms 32 drive the clamp arms hingedly connected therewith to move synchronously, and the link rods 33 limit the movement trajectories of the clamp arms to ensure that the two clamp arms are symmetrically closed and uniformly clamp the yarn; when the clamp arms are opened, the output end of the second air push rod 35 is retracted to drive the movable arms 32 and the clamp arms to reset.

[0069] The detection module adopts dual detection of pressure and image to reduce the misjudgment rate and improve the accuracy and reliability of the broken yarn detection.

[0070] Specifically, the detection module includes a plurality of pressure sensors and a plurality of image detection probes 44, the pressure sensors are arranged at the connection positions of the tensioning wheel 29 and the spring bracket 15, the front guide wheel 14 and the rotating shaft 8, and the traction guide wheel 17 and the positioning bracket 11, are used to monitor the contact pressure of the tensioning wheel 29, the front guide wheel 14 and the traction guide wheel 17 with the yarn, and feed data signals to the central control system, and the image detection probes 44 are distributed and arranged on the inner side of the rack 1, are used to monitor the yarn conveying condition, and feed image information to the central control system.

[0071] The pressure sensors in the detection module monitor the contact pressure of the tensioning wheel 29, the front guide wheel 14, the traction guide wheel 17 and the yarn in real time, and the image detection probes 44 monitor the yarn conveying state; if the yarn is broken, the pressure sensor feeds back a pressure drop signal, and the image detection probe 44 feeds back a no-yarn signal, and after the central control system receives the signals, the two first clamp arms 13 and the two second clamp arms 16 are controlled to be closed to avoid the broken end of the yarn to be randomly floated, and at the same time, the power box 2 controls the related roller shafts to be temporarily stopped to run, so as to facilitate the subsequent joint operation of the staff.

[0072] In order to strengthen the clamping effect of the two first clamp arms 13 and the two second clamp arms 16 on the yarn, the opposite sides of the two first clamp arms 13 and the opposite sides of the two second clamp arms 16 are each provided with a rubber strip 30, and the rubber strip 30 can not only enhance the clamping effect, but also avoid damage to the yarn.

[0073] In addition, the edges of the first guide hole 20, the second guide hole 24, the third guide hole 28, the fourth guide hole 41 and the fifth guide hole 42 are all provided with a circular arc chamfer 45, which is designed to also avoid damaging the yarn.

[0074] Working principle of the present application:

[0075] The yarn barrel 39 to be twisted is fixed on the twisting mechanism 6, and the twisting mechanism 6 applies twist to the yarn;

[0076] The twisted yarn is first pulled by the second guide, and after the second guide applies tension to the yarn, the first guide pulls the yarn by reciprocating motion, guides the yarn between the winding drum 4 and the roller 5, and makes the yarn evenly distributed along the winding drum 4 during winding. The waxing assembly applies wax to the roller 5;

[0077] After the yarn is output from the twisting mechanism 6, it is first guided through the third guide hole 28, then changes direction by passing around the rear guide wheel 26, and then passes around the tensioning wheel 29 before being delivered to the first guide wheel 14 through the front guide wheel 14. The staggered arrangement of the guide wheels and the guide holes can lengthen the yarn delivery path, enhance the stability of the guide, prevent the yarn from slipping, and the spring support 15 elastically supports the tensioning wheel 29. When the yarn tension fluctuates, the spring support 15 drives the tensioning wheel 29 to move up and down through elastic deformation, dynamically adjusts the yarn wrap angle to compensate for the tension deviation, and ensures the stability of the yarn tension.

[0078] When the yarn is delivered, it will pass through the second guide hole 24, the first guide hole 24 and the traction guide wheel 17 in turn. The traction guide wheel 17 is driven by the positioning support 11 to move axially along the winding drum 4, and the yarn is evenly wound outside the winding drum 4. The traction guide wheel 17 assists in supporting the yarn, which can reduce the friction between the yarn and the guide hole. The tension adjusting mechanism adjusts the wrap angle of the yarn in the guide hole by changing the setting angle of the guide support 12, and realizes the fine adjustment of the yarn tension.

[0079] When the detection module detects that the yarn is broken, the central control system sends a command to the control assembly, which drives the two first clamping arms 13 and the two second clamping arms 16 to close and clamp and fix the ends of the broken yarn.

[0080] In the description of the application, it should be noted that the terms "upper", "lower", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the application. Unless otherwise expressly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the application can be understood according to the specific circumstances.

[0081] The above is only a specific embodiment of the application, which enables those skilled in the art to understand or implement the application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the application. Therefore, the application will not be limited to these embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features applied herein.

Claims

1. A multi-twist spinning apparatus, comprising multiple sets of frames (1) arranged side by side and textile equipment disposed inside the frames (1), characterized in that, The textile equipment includes: The take-up roller (3) and the roller (5) are rotatably connected at both ends to the frame (1). A drum (4) is fitted on the outside of the take-up roller (3), and the roller (5) is placed on one side of the drum (4). The first yarn guide is located directly in front of the roller (5) and guides the twisted yarn to the space between the drum (4) and the roller (5) through horizontal reciprocating motion. The first yarn guide is equipped with a waxing component. A twisting mechanism (6) is provided at the bottom of the frame (1) for placing the yarn bobbin (39) and applying twist to the yarn; The second yarn guide is located between the first yarn guide and the twisting mechanism (6) and is used to apply tension to the twisted yarn. Two first clamping arms (13) and two second clamping arms (16) are respectively disposed between the first yarn guide and the second yarn guide, and between the second yarn guide and the twisting mechanism (6). The yarn passes through the two second clamping arms (16) and the two first clamping arms (13) in sequence. The inner side of the frame (1) is provided with a control component for controlling the opening and closing of the first clamping arms (13) and the second clamping arms (16) after the yarn breaks.

2. The multi-twist spinning device according to claim 1, characterized in that: The first yarn guide includes a reciprocating screw (9) and a positioning bracket (11); The two ends of the reciprocating screw (9) are rotatably connected to the frame (1). The positioning bracket (11) is sleeved on the outside of the reciprocating screw (9) and threadedly connected to the reciprocating screw (9). The lower end of the positioning bracket (11) is provided with a guide wheel (17). The upper end of the positioning bracket (11) is provided with a yarn guide bracket (12). The yarn guide bracket (12) is hinged to the positioning bracket (11). The upper end of the yarn guide bracket (12) is provided with a first yarn guide hole (20). The lower end of the yarn guide bracket (12) is provided with a second yarn guide hole (24). Below the guide wheel (17) is a tension adjustment mechanism for adjusting the angle of the yarn guide bracket (12).

3. The multi-twist spinning device according to claim 2, characterized in that: The tension adjustment mechanism includes a limiting plate (18) and a first pneumatic push rod (23); The limiting plate (18) is placed below the traction guide wheel (17). The upper end of the limiting plate (18) is fixedly connected to the lower end of the positioning bracket (11). The first clamping arm (13) is arranged between the limiting plate (18) and the yarn guide bracket (12). The mounting end of the first air push rod (23) is hinged to the limiting plate (18), and the output end of the first air push rod (23) is hinged to the lower end of the yarn guide bracket (12).

4. The multi-twist spinning device according to claim 2, characterized in that: The second yarn guide includes a mounting plate (7) and a rotating shaft (8); The two ends of the rotating shaft (8) are rotatably connected to the frame (1), and a front guide wheel (14) is fitted on the outside of the rotating shaft (8). The two ends of the mounting plate (7) are fixedly connected to the frame (1). The mounting plate (7) is provided with a spring bracket (15) and a wire bracket (27) at its lower end. The spring bracket (15) is provided with a rear guide wheel (26) at one end near the mounting plate (7), and a tension wheel (29) is provided at one end away from the mounting plate (7). The tension wheel (29) is located below the front guide wheel (14). The wire bracket (27) is provided with a third yarn guide hole (28) at one end away from the mounting plate (7). The third yarn guide hole (28) is located between the tension wheel (29) and the front guide wheel (14).

5. A multi-twist spinning device according to claim 1, characterized in that: The twisting mechanism (6) includes a spindle (40); The spindle (40) is fitted with a twisting disc (38) for fixing the yarn bobbin (39) on its outer side. The spindle (40) has a through hole inside. The lower end of the spindle (40) is provided with a fourth yarn guide hole (41). The fourth yarn guide hole (41) is connected to the through hole inside the spindle (40). The spindle can (38) is fitted with a spindle can on its outer side. The spindle can (38) is fixedly connected to the spindle (40). The spindle can (38) is provided with a fifth yarn guide hole (42) on its outer side. The fifth yarn guide hole (42) is located on one side of the fourth yarn guide hole (41). The twisting disc (38) is provided with a motor shaft (43) at its lower end.

6. A multi-twist spinning device according to claim 2, characterized in that: The waxing assembly includes a mounting groove on the upper end of the yarn guide bracket (12). The mounting groove is located on the side of the yarn guide bracket (12) facing the roller (5). A wax block (21) is fixedly disposed in the mounting groove, and the wax block (21) abuts against one side of the outer wall of the roller (5).

7. A multi-twist spinning device according to claim 4, characterized in that: The control assembly includes a first power clamp (22), a second power clamp (25), and a detection module for detecting yarn breakage; The first power clamp (22) is fixedly connected to the positioning bracket (11) through a connecting plate and is used to control the opening and closing of the two first clamping arms (13). The second power clamp (25) is fixedly connected to the spring bracket (15) through a connecting plate and is used to control the opening and closing of the two second clamping arms (16).

8. A multi-twist spinning device according to claim 7, characterized in that: Both the first power clamp (22) and the second power clamp (25) include a clamping seat (31); The clamping seat (31) has a second pneumatic rod (35) at one end, and the mounting end of the second pneumatic rod (35) is fixedly connected to the clamping seat (31). The other end of the clamping seat (31) has two movable arms (32). The movable arms (32) are rotatably connected to cylindrical pins (34) on the left and right sides of the clamping seat (31). One end of the movable arm (32) extends to the inside of the clamping seat (31) and is hinged to the output end of the second pneumatic rod (35). The other end of the movable arm (32) is hinged to the second clamping arm (16) or the first clamping arm (13). Two connecting rods (33) are provided between the two movable arms (32). One end of the connecting rod (33) is hinged to the clamping seat (31), and the other end of the connecting rod (33) is hinged to the second clamping arm (16) or the first clamping arm (13).

9. A multi-twist spinning device according to claim 7, characterized in that: The detection module includes multiple pressure sensors and multiple graphic detection probes (44); The pressure sensor is located at the connection between the tension wheel (29) and the spring bracket (15), the front guide wheel (14) and the rotating shaft (8), and the traction guide wheel (17) and the positioning bracket (11). It is used to monitor the pressure between the tension wheel (29), the front guide wheel (14), and the traction guide wheel (17) and the yarn, and to feed back data signals to the central control system. The graphic detection probe (44) is distributed inside the frame (1) to monitor the yarn conveying situation and to feed back graphic information to the central control system.

10. A spinning method using a multi-twist spinning apparatus as described in any one of claims 1-9, characterized in that, Includes the following steps: Step 1: Fix the yarn bobbin (39) to be twisted onto the twisting mechanism (6), and apply twist to the yarn through the twisting mechanism (6); Step 2: The twisted yarn is first pulled by the second yarn guide. After the second yarn guide applies tension to the yarn, the first yarn guide feeds the yarn through reciprocating motion, guiding the yarn between the drum (4) and the roller (5), so that the yarn is evenly distributed along the axis of the drum (4) during the winding process. Step 3: The waxing component will wax the roller (5); Step 4: When the detection module detects a yarn breakage, the central control system sends a command to the control component, which will drive the two first clamping arms (13) and the two second clamping arms (16) to close and clamp and fix the two ends of the broken yarn.

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