Efficient spinning method

Abstract

The invention discloses an efficient spinning method. The efficient spinning method comprises the following steps that firstly, cotton is assorted; 2, opening picking; step 3, carding; 4, drawing is carried out; step 5, roving; and 6, spinning. According to the invention, the lapper is adopted to feed the laps prepared by opening and picking into the carding and combing all-in-one machine, so that the laps are directly prepared into the combed cotton slivers, the integrated production of carding and combing is realized, the spinning efficiency is greatly improved, the prepared combed cotton slivers are sequentially subjected to three times of drawing, roving and spinning to prepare the combed cotton yarns, and the production efficiency is greatly improved. And an ultra-large drafting spinning frame with a four-roller three-area drafting structure is adopted in the spinning process, so that the production of high count yarns under heavy-weight rough yarn feeding is realized, and the spinning efficiency is greatly improved.

Description

Technical Field

[0001] The invention relates to the new technical field of textiles, in particular to a high-efficiency spinning method. Background Art

[0002] The spinning process is the last process of yarn formation. It stretches and twists the coarse yarn dozens of times to make it into a yarn with a certain number of features and in line with relevant quality standards. The quality of the yarn ultimately determines the quality of the finished product. At the same time, the spinning process is also the most important process in a cotton textile factory. The size of a textile factory's production scale is expressed by the total number of spindles in the spinning machine. The unit output of the spinning machine reflects the production level of the textile enterprise. The quality of the yarn, the power consumption of raw materials, and labor productivity are the embodiment of the technology and management level of the textile enterprise. The consumption of the spinning process determines the cost of spinning, and the breakage rate of spinning per thousand spindles is an important indicator for enterprise assessment.

[0003] At present, China's textile industry is experiencing a critical period of transformation from labor-intensive to technology-intensive. Intelligent and continuous textile production has become the symbol and inevitable trend of modern textile factories. Among them, in order to reduce the impact of semi-finished products on yarn defects and hairiness caused by touch, friction, collision, etc. during the transportation between operation procedures, reduce labor and improve work efficiency, the continuous production of spinning production lines has become a future development trend. Summary of the invention

[0004] The purpose of the present invention is to provide an efficient spinning method to achieve the production of high-count yarn under heavy-quantity roving feeding and greatly improve the spinning efficiency.

[0005] The present invention provides a high-efficiency spinning method, comprising the following steps:

[0006] Step 1: Cotton matching: using 100% Xinjiang long-staple cotton fiber;

[0007] Step 2: Opening and cleaning: The selected cotton fibers are sequentially processed through cotton grabbing, mixing and opening, foreign fiber removal, vibration feeding, and single-beater rolling to obtain a relatively uniform cotton roll;

[0008] Step 3: Combing: The cotton lap obtained in the second step is fed into a combed cotton sliver through a combing and combing machine. In the combing and combing machine, the cotton lap is sequentially pressed and held by the cotton feeding part, held and combed by the licker-in opening part, freely transferred and combed by the cylinder combing part, condensed into a web and cut by the doffer stripping part, overlapped and flattened and transferred by the cotton layer gathering part, guided and pressed into a roll by the pressing and rolling part, periodically held and fed by the nipper feeding part, combed and straightened at the front end of the cylinder combing part, combed and straightened at the rear end of the separation and combination part, combined and guided for output, and guided and gathered into strips by the strip coiling part and continuously coiled in the strip can;

[0009] Step 4: Drawing: The combed cotton sliver obtained in the third step is subjected to three drawing processes to obtain the cotton sliver;

[0010] Step 5: roving: the cotton sliver obtained in the fourth step is drawn, thinned, twisted and wound to obtain cotton roving with a certain strength;

[0011] Step 6: Spinning: 1-2 cotton rovings obtained in the fifth step are fed together and then stretched, twisted and wound to obtain cotton spun yarn with a certain strength. The spinning machine adopts an ultra-large drafting CNC spinning machine equipped with a concentrated spinning device, and adopts a drafting system with a four-roller three-zone drafting structure.

[0012] An efficient spinning method as described above, wherein preferably, the cotton feeding part includes a combing cotton feeding roller and a cotton feeding plate, the cotton feeding plate is located at the lower part of the outer circumference of the combing cotton feeding roller and a certain distance is maintained between the two, and the distance between the cotton feeding plate and the combing cotton feeding roller is gradually reduced from the entrance to the exit of the cotton layer, thereby realizing the gradual compression, gripping and feeding of the fed cotton roll driven by the rotation of the combing cotton feeding roller.

[0013] As described above, a high-efficiency spinning method, wherein preferably, the licker-in roller opening part includes a licker-in roller, and needle cloths are distributed on the outer circumference of the licker-in roller. The licker-in roller and the combing and feeding roller rotate in the same direction but at different speeds, and the rotation speed of the licker-in roller is greater than the rotation speed of the combing and feeding roller. During the rotation, the needle cloths on the surface of the licker-in roller grab the cotton fibers output by the combing and feeding roller and the feeding plate, and during the grabbing process, one end of the cotton fibers is opened and combed under the grip of the combing and feeding roller and the feeding plate, and at the same time, with the rotation of the combing and feeding roller and the licker-in roller, the cotton fibers are continuously transferred to the licker-in roller, and a dust removal knife and a carding plate are arranged at the bottom of the outer circumference of the licker-in roller, and the cross-section of the dust removal knife is triangular, and the length direction of the dust removal knife is parallel to the length direction of the licker-in roller. The length direction of the licker-in roller is kept consistent, the combing plate is an arc structure, the length direction of the combing plate is kept consistent with the length direction of the licker-in roller, the cross section of the combing plate is an arc, and the cross section of the combing plate is kept parallel to the arc surface part of the licker-in roller directly above it, and debris removal slits are arranged at equal arc intervals along the arc direction of the combing plate, and the dust removal knife and the combing plate sequentially divide the air flow layer generated by the rotation of the cotton fibers driven by the licker-in roller to achieve separation and removal of impurities in the cotton fibers, thereby forming a first debris removal area between the spacing point between the cotton carding feeding plate and the licker-in roller and the spacing point between the dust removal knife and the licker-in roller, a second debris removal area is formed between the spacing point between the dust removal knife and the licker-in roller and the entrance of the combing plate, and a third debris removal area is formed between the entrance and the exit of the combing plate.

[0014] A high-efficiency spinning method as described above, wherein, preferably, the cylinder combing part includes a combing cylinder, a needle cloth is distributed on the surface of the combing cylinder, the combing cylinder and the licker-in roller maintain different speeds in the opposite direction, and the speed of the combing cylinder is greater than the speed of the licker-in roller, during the rotation process, the needle cloth on the surface of the combing cylinder grabs the cotton fibers carried by the needle teeth on the surface of the licker-in roller, and the combing effect of the cotton fibers in a free state is realized during the grabbing process, and at the same time, with the reverse rotation of the licker-in roller and the combing cylinder, the cotton fibers are continuously transferred to the cylinder, a rotating cover plate is provided on the upper part of the outer circumference of the combing cylinder, needle cloth is distributed on the cover plate, the cover plate and the combing cylinder rotate in the opposite direction, the cotton fibers grabbed by the combing cylinder rotate with the combing cylinder, and when it rotates to contact the needle cloth of the cover plate, the whiskers are decomposed between the relatively moving needle cloths, thereby decomposing the bundled fibers into single fibers, and a large leaking bottom is provided at the bottom of the combing cylinder.

[0015] A high-efficiency spinning method as described above, wherein preferably, the doffer stripping part includes a doffer, the doffer is close to the combing cylinder and keeps rotating in the opposite direction to the cylinder, and the rotation speed of the doffer is less than the rotation speed of the combing cylinder. While the combing cylinder rotates to comb the cotton fibers, the doffer grabs part of the fibers on the needle surface of the combing cylinder and condenses them into a fiber layer. In this process, fibers on a large area of ​​the fast combing cylinder are transferred and condensed to a unit area of ​​the slow doffer, and a cotton layer cutter is arranged on the upper part of the doffer. The cotton layer cutting knife is driven up or down by a motor through a pulley device. When the cotton fiber layer condensed by the doffer reaches a certain width, the cotton layer cutting knife is driven by the motor to fall and cut the cotton layer. After the cotton layer is cut, the cotton layer cutting knife is driven by the motor to rise and return to the initial position. The cotton fibers not caught by the doffer continue to be driven by the cylinder. When it rotates to the bottom of the cotton combing cylinder, the cotton fibers overcome their own gravity and centrifugal force under the support of the large leak bottom and continue to rotate with the cotton combing cylinder. At the same time, impurities with strong centrifugal force fall and are removed along the gaps of the large leak bottom.

[0016] An efficient spinning method as described above, wherein preferably, the cotton layer gathering part includes a cotton layer tray, the cotton layer tray is a rectangular structure, a supporting rod is arranged at the bottom of the cotton layer tray, the supporting rod is driven by a motor to perform rising, falling and left and right sliding, and a pressure sensor is arranged on the cotton layer tray. In the initial state, the cotton layer tray is in a completely lowered static state. At this time, the cotton layer cut by the cotton layer cutting knife directly slides into the cotton layer tray, and the fallen cotton layer is layered and stacked and laid flat in the cotton layer tray. When the pressure sensor on the cotton layer tray detects that the pressure of the stacked cotton layer reaches the set value, the motor drives the supporting rod to first perform an upward movement, and then slide left and right, so as to deliver the cotton layer of the required thickness to the compacted roll part.

[0017] An efficient spinning method as described above, wherein preferably, the compacting and rolling part includes a compacting roller, a cotton guide roller, and a cotton roll roller, and the cotton layer transmitted from the cotton layer tray of the cotton layer gathering part is directly held and pressed by the compacting roller, and the fluffy cotton layer before rolling is flattened and compacted under the pressure of the compacting roller to form a tight cotton roll, and the formed cotton roll is driven to rotate by friction of a pair of cotton roll rollers and a pressing roll roller under the guidance of the cotton guide roller, thereby achieving uniform rolling and obtaining a cotton roll with uniform thickness and uniform density.

[0018] An efficient spinning method as described above, wherein preferably, the nipper feeding part includes a combed cotton feeding roller and a nipper, the nipper includes an upper nipper and a lower nipper, and a tension roller is arranged at the rear of the nipper feeding part, and the cotton roll outputted from the compacting roll part is directly pressed by the combed cotton feeding roller after passing through the tension roller, and at this time, the tension adjustment of the cotton roll during feeding is realized by the tension roller, so that the cotton roll can enter the nipper feeding part uniformly under constant tension control, and the cotton roll outputted by the combed cotton feeding roller is then held by the upper nipper and the lower nipper, and the upper nipper and the lower nipper in the nipper feeding part swing back and forth periodically, and the periodic feeding of the cotton roll is realized by the back and forth swinging.

[0019] A high-efficiency spinning method as described above, wherein preferably, the cylinder combing part includes a combing cylinder and an upper top comb, the upper nipper plate and the lower nipper plate periodically swing and feed the cotton roll, and under the effective clamping of the nipper plate, the combing cylinder combs the front end and middle part of the cotton roll fiber bundle extending out of the panel, thereby removing short fibers and part of dust during the combing process and making the fibers straight and parallel, and the upper top comb combs the rear end of the fiber bundle, and at the same time prevents the short fibers and dust clamped in the beard from re-entering the cotton net.

[0020] An efficient spinning method as described above, wherein preferably, the separation and combining part includes a group of separation roller pairs, each separation roller pair includes an upper separation roller and a lower separation roller, and in each working cycle, the cotton net of the previous working cycle is poured in first, and the front end of the beard clump sent by the clamp is grasped in time and overlapped on the poured cotton net to achieve combining, because the speed of the separation jaws is greater than the speed of the beard clumps fed by the top comb, the fibers grasped by the separation jaws are drawn out and separated from the fed beard clumps, and the tail ends thereof are combed by the top comb.

[0021] Compared with the prior art, the present invention adopts a rolling machine to feed the cotton rolls obtained by opening and cleaning cotton into a carding and combing integrated machine, so as to directly make combed cotton slivers from cotton rolls, thereby realizing the integrated production of carding and combing, greatly improving the spinning efficiency, and the prepared combed cotton slivers are successively subjected to three stages of drawing, roving and spinning to obtain cotton combed yarn, and an ultra-large drafting spinning frame with a four-roller three-zone drafting structure is adopted in the spinning process, thereby realizing the production of high-count yarn under heavy-quantity roving feeding, greatly improving the spinning efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the carding and combing integrated machine of the present invention.

[0023] Explanation of the accompanying drawings: 1-feeding plate, 2-combing feeding roller, 3-licker-in roller, 4-dust removal knife, 5-combing plate, 6-combing cylinder, 7-cover plate, 8-large leaking bottom, 9-doffer, 10-cotton layer cutting knife, 11-pulley device, 12-cotton layer tray, 13-supporting rod, 14-pressing roller, 15-cotton guide roller, 16-cotton roll roller, 17-pressing roll roller, 18-tension roller, 19-combing feeding roller, 20-upper nipper plate, 21-lower nipper plate, 22-upper top comb, 23-combing cylinder, 24-separating roller pair, 25-cotton guide plate, 26-pressing roller, 27-bell mouth, 28-upper coil disc, 29-lower coil can, 30-ground disc. DETAILED DESCRIPTION

[0024] The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, but should not be construed as limiting the present invention.

[0025] The invention relates to an efficient spinning method, wherein a cotton roll obtained by opening and cleaning cotton is fed into a carding and combing integrated machine by using a lap forming machine, and along the movement direction of the cotton roll in the carding and combing integrated machine, the carding and combing integrated machine comprises, from back to front, a cotton feeding part, a licker-in combing part, a cylinder combing part, a doffer stripping part, a compacting and rolling device, a nipper feeding part, a cylinder combing part, a separation and combination part, and a sliver forming and coiling part, so that the cotton roll is directly made into a combed cotton strip, thereby realizing the integrated production of carding and combing, improving the spinning efficiency, and the prepared combed cotton strip is sequentially subjected to three drawing, roving, and spinning to obtain a cotton combed yarn, and an ultra-large drafting spinning machine with a four-roller three-zone drafting structure is adopted in the spinning process, so as to realize the production of high-count yarn under the feeding of heavy-quantity roving, and greatly improve the spinning efficiency. Specifically, the method comprises the following steps:

[0026] Step 1: Cotton matching: Use 100% Xinjiang long-staple cotton fiber, with a main fiber length of 36.5mm, a quality length of 39.0mm, a micronaire value of 3.7, a fineness of 1.39dtex, a short-staple rate of 13.5%, and a foreign matter rate of 1.5%.

[0027] Step 2: Opening and cleaning cotton: The selected cotton fibers are picked up by the disc-type plucking machine in the required mixing ratio, and the preliminary opening and mixing are achieved in the process of the beaters picking up the cotton fibers. The cotton fibers picked up are opened, mixed and impurities are removed by the mixing cotton opener, and further opened by the combing needle beater cotton opener. In the process of opening, the impurities in the cotton fibers are further separated and removed. The foreign fiber remover separates and removes other fibers in the opened cotton fibers. The dynamic cotton feeder realizes opening and uniform cotton feeding under vibration, so that the cotton layer is evenly transported to the lap forming machine, and the single-beater lap forming machine produces an overall relatively uniform cotton lap; in the process of opening and cleaning cotton, the function of each single machine gradually realizes the opening, mixing and uniform arrangement of the raw cotton, following the process principle of "multiple bins, fine cotton grasping, sufficient mixing, gradual opening, early falling and less breakage, combing instead of beating, and less fiber damage", so as to improve the quality and make the unevenness rate of cotton lap reach below 1.2% and the impurity rate reach below 0.9%.

[0028] The third step: combing: the cotton rolls obtained in the second step are passed through a combing and cotton-combing machine to obtain combed cotton slivers. Along the movement direction of the cotton rolls in the combing and cotton-combing machine, the combing and cotton-combing machine includes, from back to front, a cotton feeding part, a licker-in roller opening part, a cylinder combing part, a doffer stripping part, a cotton layer gathering part, a compacting and rolling part, a nipper feeding part, a cylinder combing part, a separation and combining part, and a sliver coiling part.

[0029] Reference Figure 1As shown, the cotton feeding part includes a carding cotton feeding roller 2 and a cotton feeding plate 1. The cotton feeding plate 1 is located at the lower part of the outer circumference of the carding cotton feeding roller 2 and a certain distance is maintained between the two. The distance between the cotton feeding plate 1 and the carding cotton feeding roller 2 is gradually reduced from the entrance to the exit of the cotton layer, so that the fed cotton roll is gradually pressed, gripped and fed driven by the rotation of the carding cotton feeding roller 2.

[0030] The licker-in roller 3 opening part comprises a licker-in roller 3, on the outer circumference of which a needle cloth is distributed, the licker-in roller 3 and the carding and feeding roller 2 rotate in the same direction but at different speeds, and the rotation speed of the licker-in roller 3 is greater than that of the carding and feeding roller 2. During the rotation, the needle cloth on the surface of the licker-in roller 3 grabs the cotton fibers output by the carding and feeding roller 2 and the feeding plate 1, and in the grabbing process, one end of the cotton fibers is opened and combed under the grip of the carding and feeding roller 2 and the feeding plate 1, and at the same time, with the rotation of the carding and feeding roller 2 and the licker-in roller 3, the cotton fibers are continuously transferred to the licker-in roller 3, and a dust removal knife 4 and a carding plate 5 are arranged at the bottom of the outer circumference of the licker-in roller 3. The cross section of the dust removal knife 4 is triangular, and the length direction of the dust removal knife 4 is consistent with the length direction of the licker-in roller 3. The carding plate 5 is an arc structure, and the carding plate 5 is a carding plate. The length direction of the carding plate 5 is consistent with the length direction of the taker-in roller 3. The cross-section of the carding plate 5 is arc-shaped, and the cross-section of the carding plate 5 is parallel to the arc surface part of the taker-in roller 3 directly above it. There are debris falling slits at equal arc intervals along the arc direction of the carding plate 5. The dust removal knife 4 and the carding plate 5 successively divide the air flow layer generated by the rotation of the cotton fiber driven by the taker-in roller 3 to realize the separation and removal of impurities in the cotton fiber, so as to form a first debris falling area between the spacing point between the cotton feeding plate 1 and the taker-in roller 3 and the spacing point between the dust removal knife 4 and the taker-in roller 3, which mainly realizes the falling and removal of large impurities, and forms a second debris falling area between the spacing point between the dust removal knife 4 and the taker-in roller 3 and the entrance of the carding plate 5, which mainly removes a small amount of large impurities and most small impurities, and forms a third debris falling area between the entrance and the exit of the carding plate 5, which mainly removes short fluff and dust.

[0031] The cylinder combing part comprises a carding cylinder 6, on the surface of which carding cylinder 6 is distributed card clothing, the carding cylinder 6 and the licker-in roller 3 maintain different rotation speeds in the opposite direction, and the rotation speed of the carding cylinder 6 is greater than that of the licker-in roller 3, during the rotation process, the card clothing on the surface of the carding cylinder 6 grabs the cotton fibers carried by the needle teeth on the surface of the licker-in roller 3, and the combing effect of the cotton fibers in a free state is realized during the grabbing process, and at the same time, with the reverse rotation of the licker-in roller 3 and the carding cylinder 6, the cotton fibers are continuously transferred to the cylinder, a rotating cover plate 7 is arranged on the upper part of the outer circumference of the carding cylinder 6, card clothing is distributed on the cover plate 7, the cover plate 7 and the carding cylinder 6 rotate in the opposite direction, the cotton fibers grabbed by the carding cylinder 6 rotate with the carding cylinder 6, and when it rotates to contact with the card clothing of the cover plate 7, the whiskers are decomposed between the relatively moving card clothings, thereby decomposing the bundled fibers into single fibers, and a large leaking bottom 8 is arranged at the bottom of the carding cylinder 6.

[0032] The doffer stripping part includes a doffer 9, which is close to the carding cylinder 6 and keeps rotating in the opposite direction to the carding cylinder 6. At the same time, the rotation speed of the doffer 9 is lower than that of the carding cylinder 6. While the carding cylinder 6 is rotating to comb the cotton fibers, the doffer 9 grabs part of the fibers on the needle surface of the carding cylinder 6 and condenses them into a fiber layer. In this process, many areas of the fibers on the fast carding cylinder 6 are transferred and condensed onto a unit area of ​​the slow doffer 9. A cotton layer cutter 10 is arranged on the upper part of the doffer 9. The cotton layer cutter 10 passes through a pulley device 1 1 is driven to rise or fall by a motor. When the cotton fiber layer agglomerated by the doffer 9 reaches a certain width, the cotton layer cutting knife 10 is driven by the motor to fall and cut the cotton layer. After the cotton layer is cut, the cotton layer cutting knife 10 is driven by the motor to rise and return to the initial position. The cotton fibers not caught by the doffer 9 continue to be driven by the combing cylinder 6. When it rotates to the bottom of the combing cylinder 6, the cotton fibers overcome their own gravity and centrifugal force under the support of the large leak bottom 8 and continue to rotate with the cylinder. At the same time, impurities with strong centrifugal force fall along the gap of the large leak bottom 8 and are removed.

[0033] The cotton layer gathering part includes a cotton layer tray 12, which is a rectangular structure. A supporting rod 13 is arranged at the bottom of the cotton layer tray 12. The supporting rod 13 is driven by a motor to rise, fall and slide left and right. A pressure sensor is arranged on the cotton layer tray 12. In the initial state, the cotton layer tray 12 is in a completely lowered static state. At this time, the cotton layer cut by the cotton layer cutter 10 directly slides into the cotton layer tray 12, and the fallen cotton layer is layered and laid flat in the cotton layer tray 12. When the pressure sensor on the cotton layer tray 12 detects that the pressure of the stacked cotton layer reaches the set value, the motor drives the supporting rod 13 to first rise and then slide left and right, so that the cotton layer of the required thickness is sent to the compacted roll part.

[0034] The compacting and rolling part includes a compacting roller 14, a cotton guide roller 15, and a cotton roll roller 16. The cotton layer transmitted from the cotton layer tray 12 of the cotton layer gathering part is directly held and pressed by the compacting roller 14. Under the pressure of the compacting roller 14, the fluffy cotton layer before rolling is flattened and compacted to form a compact cotton roll. The formed cotton roll is driven to rotate by friction of a pair of cotton roll rollers 16 and a rolling roller 17 under the guidance of the cotton guide roller 15, thereby achieving uniform rolling and obtaining a cotton roll with uniform thickness and uniform density.

[0035] The nipper feeding part includes a combed cotton feeding roller 19 and a nipper, and the nipper includes an upper nipper 20 and a lower nipper 21. A tension roller 18 is arranged at the rear part of the nipper feeding part. The cotton rolls output from the compacted roll part are directly combed and pressed by the cotton feeding roller 19 after passing through the tension roller 18. At this time, the tension of the cotton rolls during feeding is adjusted by the tension roller 18, so that the cotton rolls can enter the nipper feeding part uniformly under constant tension control. The cotton rolls output by the combed cotton feeding roller 19 are then gripped by the upper and lower nippers 21. The upper nipper 20 and the lower nipper 21 in the nipper feeding part swing back and forth periodically, and the periodic feeding of the cotton rolls is achieved by swinging back and forth.

[0036] The cylinder combing part includes a combing cylinder 23 and an upper top comb 22. The upper nipper plate 20 and the lower nipper plate 21 periodically swing and feed the cotton roll. Under the effective clamping of the nipper plate, the combing cylinder 23 combs the front end and middle part of the cotton roll fiber bundle extending out of the panel, thereby removing short fibers and part of dust during the combing process and making the fibers straight and parallel. The upper top comb 22 combs the rear end of the fiber bundle and prevents the short fibers and dust sandwiched in the beard from re-entering the cotton net.

[0037] The separation and combining part includes a group of separation roller pairs 24, each separation roller pair 24 includes an upper separation roller and a lower separation roller. In each working cycle, the cotton net of the previous working cycle is poured in first, and the front end of the beard clump sent by the clamp is grasped in time and overlapped on the poured cotton net to achieve combining. Because the speed of the separation jaws is greater than the speed of the beard clumps fed by the top comb, the fibers grasped by the separation jaws are drawn out and separated from the fed beard clumps, and their tail ends are combed by the top comb.

[0038] The sliver forming and coiling part includes a pressing roller 26 and a sliver coiler. A bell mouth 27 is provided at the upper part between the pressing rollers 26. The bell mouth 27 extends into between the pressing rollers 26. The cotton web output by the separation and combining part enters the bell mouth 27 after being guided by the cotton guide plate 25, and is gathered through the bell mouth 27, thereby changing the cotton web from a mesh structure to a strip structure. During the gathering process, the cotton web produces a longitudinal mixing effect due to the different time of reaching the bell mouth 27. The cotton fibers that are re-merged into strips are then pressed and fixed by the pressing rollers 26 and continuously wound in the sliver cylinder through the sliver coiler, thereby obtaining combed cotton slivers. The sliver coiler includes an upper sliver coiling disk 28 and a lower sliver cylinder 29. The lower sliver cylinder 29 is embedded in a base 30. The upper sliver coiling disk 28 and the base 30 are driven by corresponding transmission mechanisms to rotate in the same direction but at different speeds, and the rotation speed of the upper sliver coiling disk 28 is greater than the rotation speed of the base 30. The combed cotton sliver passes through the upper sliver coiling disk 28 and is continuously coiled in the lower sliver cylinder 29.

[0039] Step 4: Drawing: The combed cotton strips obtained in the third step are subjected to three drawing processes to obtain cotton strips, thereby improving the mixing uniformity of various cotton fibers in the combed cotton strips, and improving the structure of the cotton strips, ensuring that the fibers are parallel and straight, achieving a more complete separation state, and controlling the unevenness of short segments of the cotton strips, the uneven weight rate and the weight deviation at a better level. The first drawing, the second drawing and the last drawing all use 6 strands combined, and adopt the forward drafting process, that is, the drafting multiple of the first drawing is less than the drafting multiple of the second drawing, and the drafting multiple of the second drawing is less than the first drawing multiple. Less than the final drawing multiple, among which the first drawing multiple is less than or equal to the drawing number, and the total drawing multiple of the second and final drawing is greater than or equal to the drawing number, so that the fiber separation and fiber straightness can reach a better level, reduce the thick sections caused by fiber chaos, and improve the yarn quality. The quantitative values ​​of the three drawing are 16.44g / 5m, 16.39g / 5m, and 16.2g / 5m respectively, the pressure of the leather roller is 118×294×314×294, and the output speed of the pressing roller 14 is 256.8r / min.

[0040] Step 5: Cotton roving: The cotton sliver obtained in the fourth step is stretched, thinned, twisted and wound to obtain cotton roving with a certain strength. The stretching of the roving is further improved to improve the straightness of the cotton fiber. Through twisting and gathering, conditions are created for the large stretching of the spinning frame. The roving process design is mainly aimed at improving the quality of the roving, so as to achieve stable elongation, small weight difference, uniform sliver, compact structure and good forming. The mechanical flat repair quality of the roving should be improved, the drafting gear should be engaged normally, the bending of the rollers and the eccentricity of the rubber rollers should meet the requirements, there should be no oil shortage, the opening of the cotton collector should be consistent and the installation position should be appropriate, the rubber roller should rotate flexibly, the starting position of the iron cannon should be accurate, so as to make the elongation stable, keep the spindle shell smooth, operate normally and the channel free of hanging flowers, thereby improving the roving sliver, reducing the weight unevenness and reducing yarn defects. The roving quantity is set to 10g / 10m.

[0041] Step 6: Spinning: 1-2 cotton rovings obtained in the fifth step are fed together and then stretched, twisted and wound to obtain cotton roving with a certain strength. The spinning machine adopts an ultra-large drafting CNC spinning machine equipped with a Toyota-style concentrated spinning device. The drafting system adopts a four-roller three-zone drafting structure. Along the direction of fiber movement, the four rollers include the rear roller, the middle rear roller, the middle front roller and the front roller from back to front. The drafting system adopts Suessen leaf spring cradle for pressurization. The rear drafting zone is between the rear roller and the middle rear roller. The drafting multiple of the rear drafting zone is set between 1.05-1.3. The rear drafting zone plays a drafting and finishing role on the cotton roving fed into the drafting system, so that the fiber straightness in the cotton roving is greatly improved under the drafting and finishing action of the rear drafting zone. At the same time, the force distribution between the fibers is more uniform. The middle drafting zone is between the middle rear roller and the middle front roller. The middle drafting zone has a drafting multiple set between 1.3 and 2.0. The middle drafting zone plays a transitional drafting and finishing role on the cotton slivers output from the rear drafting zone of the feeding drafting system, so that the cotton slivers output from the rear drafting zone are initially stretched and thinned under the transitional drafting and finishing role of the middle drafting zone, and the action force between the fibers is weakened and the uniformity is increased. The front drafting zone is between the middle front roller and the front roller. The drafting multiple set between 30 and 100 is played a main drafting role on the cotton slivers output from the middle drafting zone of the feeding drafting system, so that the cotton slivers output from the middle drafting zone are greatly stretched and thinned under the main drafting of the front drafting zone, and the action force between the fibers is greatly weakened, so as to obtain the required quantitative cotton slivers. The cotton slivers output from the drafting system are then twisted into yarn and continuously wound on the bobbin.

[0042] Xinjiang long-staple cotton fiber was selected as raw material, and the method of the present invention and the traditional combed yarn production method were respectively used to prepare pure cotton combed weaving yarn with a linear density of 5.8 tex, and the corresponding process parameters were as follows:

[0043] (1) Process flow:

[0044] The present invention: FA003 disc-type plucker - SFA035E mixed cotton opener - FA106E combing needle beater cotton opener - YQ600H foreign fiber remover - SF161A vibrating cotton feeder - A076F single beater lap machine - carding and combing integrated machine - FA306A drawing frame - FA306A drawing frame - FA306A drawing frame - JWF1415 roving frame - TH558 CNC spinning frame

[0045] Traditional technology: FA003 disc plucker—SFA035E mixed cotton opener—FA106E combing needle beater cotton opener—YQ600H foreign fiber remover—SF161A vibrating cotton feeder—A076F single beater lap machine—FA231C carding machine—FA306A drawing frame—JSFA360 drawing and lap machine—E65 combing machine—FA306A drawing frame—FA306A drawing frame—FA306A drawing frame—JWF1415 roving frame—TH558 CNC spinning frame Key process parameter design:

[0046] Opening and cleaning:

[0047] FA003 disc type cotton plucking machine

[0048]

[0049] SFA035E Mixed Cotton Opening Machine

[0050]

[0051] FA106E type comb needle beater cotton opening machine

[0052]

[0053]

[0054] A076F Single Beater Rolling Machine

[0055]

[0056] Traditional carding technology:

[0057] FA231C carding machine

[0058]

[0059] Traditional combing preparation:

[0060] FA306A drawing process design table (pre-drawing)

[0061]

[0062] JSFA360 Strip and Roll Machine

[0063]

[0064]

[0065] Traditional combing:

[0066] E65 combing machine

[0067]

[0068] The present invention provides a cotton combing and combing integrated machine:

[0069]

[0070] Drawing:

[0071]

[0072]

[0073] Roving:

[0074]

[0075] Fine yarn:

[0076]

[0077] (2) Yarn quality

[0078]

[0079] The yarn quality test results of the pure cotton combed weaving yarn with a linear density of 5.8 tex prepared by the method of the present invention and the traditional combed yarn production method are shown in the table above. It is obvious that the comprehensive quality of the pure cotton combed weaving yarn produced by the method of the present invention is comparable to that of the traditional process, especially in terms of yarn evenness and strength. This is only because the present invention adopts the integrated processing of combing and combing, which reduces the damage to the fiber compared with the traditional process. At the same time, the present invention realizes the integrated processing of combing and combing, eliminating the traditional combing preparation process, so the spinning efficiency can be significantly improved.

[0080] The above describes in detail the structure, features and effects of the present invention based on the embodiments shown in the drawings. The above is only a preferred embodiment of the present invention, but the present invention is not limited to the scope of implementation shown in the drawings. Any changes made according to the concept of the present invention, or modifications to equivalent embodiments with equivalent changes, which still do not exceed the spirit covered by the description and drawings, should be within the protection scope of the present invention.

Claims

1. A high-efficiency spinning method, characterized in that: The following steps are involved: Step 1: Cotton matching: using 100% Xinjiang long-staple cotton fiber; Step 2: Opening and cleaning: The selected cotton fibers are sequentially processed through cotton grabbing, mixing and opening, foreign fiber removal, vibration feeding, and single-beater rolling to obtain a relatively uniform cotton roll; Step 3: Combing: The cotton lap obtained in the second step is fed into a combed cotton sliver through a combing and combing machine. In the combing and combing machine, the cotton lap is sequentially pressed and held by the cotton feeding part, held and combed by the licker-in opening part, freely transferred and combed by the cylinder combing part, condensed into a web and cut by the doffer stripping part, overlapped and flattened and transferred by the cotton layer gathering part, guided and pressed into a roll by the pressing and rolling part, periodically held and fed by the nipper feeding part, combed and straightened at the front end of the cylinder combing part, combed and straightened at the rear end of the separation and combination part, combined and guided for output, and guided and gathered into strips by the strip coiling part and continuously coiled in the strip can; Step 4: Drawing: The combed cotton sliver obtained in the third step is subjected to three drawing processes to obtain the cotton sliver; Step 5: roving: the cotton sliver obtained in the fourth step is drawn, thinned, twisted and wound to obtain cotton roving with a certain strength; Step 6: Spinning: 1-2 cotton rovings obtained in the fifth step are fed together and then stretched, twisted and wound to obtain cotton spun yarn with a certain strength. The spinning machine adopts an ultra-large drafting CNC spinning machine equipped with a concentrated spinning device, and adopts a drafting system with a four-roller three-zone drafting structure.

2. The high-efficiency spinning method according to claim 1, characterized in that: The cotton feeding part includes a combing cotton feeding roller and a cotton feeding plate. The cotton feeding plate is located at the lower part of the outer circumference of the combing cotton feeding roller and a certain distance is maintained between the two. The distance between the cotton feeding plate and the combing cotton feeding roller is gradually reduced from the entrance to the exit of the cotton layer, so that the fed cotton roll can be gradually pressed, gripped and fed under the rotation of the combing cotton feeding roller.

3. A high-efficiency spinning method according to claim 2, characterized in that: The licker-in roller opening part includes a licker-in roller, on the outer circumference of which a needle cloth is distributed, the licker-in roller and the combing and feeding roller rotate in the same direction but at different speeds, and the rotation speed of the licker-in roller is greater than that of the combing and feeding roller, and during the rotation, the needle cloth on the licker-in roller surface grabs the cotton fibers output by the combing and feeding roller and the feeding plate, and during the grabbing process, one end of the cotton fibers is opened and combed under the grip of the combing and feeding roller and the feeding plate, and at the same time, with the rotation of the combing and feeding roller and the licker-in roller, the cotton fibers are continuously transferred to the licker-in roller, and a dust removal knife and a carding plate are arranged at the bottom of the outer circumference of the licker-in roller, the cross-section of the dust removal knife is triangular, and the length direction of the dust removal knife is kept consistent with the length direction of the licker-in roller. The combing plate is an arc-shaped structure, the length direction of the combing plate is consistent with the length direction of the licker-in roller, the cross-section of the combing plate is an arc-shaped, and the cross-section of the combing plate is parallel to the arc surface part of the licker-in roller directly above it, and debris removal slits are arranged at equal arc intervals along the arc direction of the combing plate, and the dust removal knife and the combing plate successively divide the airflow layer generated by the rotation of the cotton fibers driven by the licker-in roller to realize separation and removal of impurities in the cotton fibers, thereby forming a first debris removal area between the spacing point between the cotton feeding plate and the licker-in roller and the spacing point between the dust removal knife and the licker-in roller, a second debris removal area is formed between the spacing point between the dust removal knife and the licker-in roller and the entrance of the combing plate, and a third debris removal area is formed between the entrance and the exit of the combing plate.

4. A high-efficiency spinning method according to claim 3, characterized in that: The cylinder combing part comprises a cotton combing cylinder, on the surface of which needle cloth is distributed, the cotton combing cylinder and the licker-in roller maintain different rotation speeds in the opposite direction, and the rotation speed of the cotton combing cylinder is greater than that of the licker-in roller, during the rotation process, the needle cloth on the surface of the cotton combing cylinder grabs the cotton fibers carried by the needle teeth on the surface of the licker-in roller, and the combing effect of the cotton fibers in a free state is realized during the grabbing process, and at the same time, with the reverse rotation of the licker-in roller and the cotton combing cylinder, the cotton fibers are continuously transferred to the cylinder, a rotating cover plate is arranged on the upper part of the outer circumference of the cotton combing cylinder, needle cloth is distributed on the cover plate, the cover plate rotates in the opposite direction to the cotton combing cylinder, the cotton fibers grabbed by the cotton combing cylinder rotate with the cotton combing cylinder, and when it rotates to contact with the needle cloth of the cover plate, the whiskers are decomposed between the relatively moving needle cloths, thereby decomposing the bundled fibers into single fibers, and a large leaking bottom is arranged at the bottom of the cotton combing cylinder.

5. A high-efficiency spinning method according to claim 4, characterized in that: The doffer stripping part includes a doffer, which is close to the combing cylinder and keeps rotating in the opposite direction to the combing cylinder. At the same time, the rotation speed of the doffer is lower than that of the combing cylinder. When the combing cylinder rotates to comb the cotton fibers, the doffer grabs part of the fibers on the needle surface of the combing cylinder and condenses them into a fiber layer. In this process, fibers on many areas of the fast combing cylinder are transferred and condensed to a unit area of ​​the slow doffer. A cotton layer cutter is arranged on the upper part of the doffer. The cotton layer cutter is driven by a pulley device. The motor drives it to rise or fall, and when the cotton fiber layer condensed by the doffer reaches a certain width, the cotton layer cutting knife is driven by the motor to fall and cut the cotton layer. After the cotton layer is cut, the cotton layer cutting knife is driven by the motor to rise and return to the initial position, and the cotton fibers not caught by the doffer continue to be driven by the combing cylinder. When it rotates to the bottom of the combing cylinder, the cotton fibers overcome their own gravity and centrifugal force under the support of the large leak bottom and continue to rotate with the combing cylinder. At the same time, impurities with strong centrifugal force fall and are removed along the gaps of the large leak bottom.

6. A high-efficiency spinning method according to claim 5, characterized in that: The cotton layer gathering part includes a cotton layer tray, which is a rectangular structure. A supporting rod is arranged at the bottom of the cotton layer tray. The supporting rod is driven by a motor to perform upward, downward and left and right sliding movements. A pressure sensor is arranged on the cotton layer tray. In an initial state, the cotton layer tray is in a completely lowered static state. At this time, the cotton layer cut by the cotton layer cutting knife directly slides into the cotton layer tray, and the fallen cotton layer is layered and stacked and laid flat in the cotton layer tray. When the pressure sensor on the cotton layer tray detects that the pressure of the stacked cotton layers reaches a set value, the motor drives the supporting rod to first perform an upward movement and then slide left and right, thereby delivering the cotton layer of required thickness to the compacted roll part.

7. A high-efficiency spinning method according to claim 6, characterized in that: The compacting and rolling part includes a compacting roller, a cotton guide roller, and a cotton roll roller. The cotton layer transmitted from the cotton layer tray of the cotton layer gathering part is directly held and pressed by the compacting roller. Under the pressure of the compacting roller, the fluffy cotton layer before rolling is flattened and compacted to form a compact cotton roll. The formed cotton roll is driven to rotate by friction between a pair of cotton roll rollers and a pressing roll roller under the guidance of the cotton guide roller, thereby achieving uniform rolling and obtaining a cotton roll with uniform thickness and uniform density.

8. A high-efficiency spinning method according to claim 7, characterized in that: The nipper feeding part includes a combed cotton feeding roller and a nipper, and the nipper includes an upper nipper and a lower nipper. A tension roller is arranged at the rear of the nipper feeding part. The cotton roll outputted from the compacting roll part is directly pressed by the combed cotton feeding roller after passing through the tension roller. At this time, the tension of the cotton roll during feeding is adjusted by the tension roller, so that the cotton roll can enter the nipper feeding part uniformly under constant tension control. The cotton roll outputted from the combed cotton feeding roller is then held by the upper nipper and the lower nipper. The upper nipper and the lower nipper in the nipper feeding part swing back and forth periodically, and the periodic feeding of the cotton roll is achieved by swinging back and forth.

9. A high-efficiency spinning method according to claim 8, characterized in that: The cylinder combing part includes a combing cylinder and an upper top comb. The upper nipper plate and the lower nipper plate periodically swing and feed the cotton roll. Under the effective clamping of the nipper plate, the combing cylinder combs the front end and middle part of the cotton roll fiber bundle extending out of the panel, thereby removing short fibers and part of dust during the combing process and making the fibers straight and parallel. The upper top comb combs the rear end of the fiber bundle and prevents the short fibers and dust clamped in the cotton web from re-entering the cotton net.

10. A high-efficiency spinning method according to claim 9, characterized in that: The separating and combining part comprises a group of separating roller pairs, each separating roller pair comprises an upper separating roller and a lower separating roller. In each working cycle, the cotton web of the previous working cycle is poured in first, and the front end of the beard clump sent by the clamp is grasped in time and overlapped on the poured cotton web to achieve combining. Because the speed of the separating jaws is greater than the speed of the beard clumps fed by the top comb, the fibers grasped by the separating jaws are drawn out and separated from the fed beard clumps, and the tail ends thereof are combed by the top comb.

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