CN116024712A

CN116024712A - Production method of health-care yarn

Info

Publication number: CN116024712A
Application number: CN202310196265.2A
Authority: CN
Inventors: 宋娟; 刘新金; 苏旭中
Original assignee: Wuxi University
Current assignee: Wuxi University
Priority date: 2023-03-02
Filing date: 2023-03-02
Publication date: 2023-04-28

Abstract

The invention discloses a production method of health-care yarn, which comprises the following steps: s1, opening and cleaning to form a flow to prepare a cotton fiber flow and a hollow far infrared polyester fiber flow; s2, mixing and rolling, namely preparing an initial mixed fiber roll by combing the prepared cotton fiber flow and the hollow far infrared polyester fiber flow together; s3, stretching the mixed fiber rolls into strips, and merging and stretching the prepared initial mixed fiber rolls through a merging device to obtain the required mixed fiber rolls; s4, twisting into yarn, and obtaining the required health-care yarn after finishing the mixed fiber strips obtained in the step S3, roving and spinning. Aiming at the defects of poor hygroscopicity and serious static electricity of the hollow far infrared polyester, the invention provides a production method of health care yarn for improving the comfort of fiber products and simultaneously ensuring the warmth retention of fabrics, cotton fibers with natural cavity structures are required to be blended with the hollow far infrared polyester, and soft, comfortable, warmth retention and antibacterial multifunctional yarn is developed.

Description

Production method of health-care yarn

Technical Field

The invention relates to the technical field of novel yarns, in particular to a production method of health-care yarns.

Background

With the development of social economy, the living standard of people is continuously improved, and as for the textile for clothes, fashion and functionality are increasingly focused, and unique styles and various functions such as antibacterial, antistatic and the like are pursued besides pursuing wearing comfort. To meet this consumer demand, the continued development of new yarns and fabrics is an important task in the textile industry. The textile has the important functions of reducing heat energy loss and maintaining body temperature, but the common thermal fabric is excessively dependent on the thickness of the fabric and the quality of filling the wadding, so that the problems of insufficient portability, large volume and the like are caused. Therefore, a novel spinning raw material is required to be introduced, the hollow far-infrared polyester fiber is utilized to develop the polyester-cotton blended thermal insulation yarn, and a yarn foundation is provided for preparing the light and thin multifunctional cold-proof textile.

The hollow far infrared polyester fiber is provided with a cavity along the axial direction, and the fiber is light and fluffy and has excellent heat insulation performance. Because the far infrared emitter is contained, the hollow far infrared polyester fiber can radiate energy to human body through infrared rays, and the fiber product has the functions of keeping warm and protecting health. In addition, after the bacteria are subjected to the action of far infrared rays, the growth of the bacteria is inhibited, so that the hollow far infrared far polyester has an antibacterial function. However, as one type of polyester fiber, hollow far infrared polyester has the defects of poor hygroscopicity and serious static electricity, and cotton fiber with a natural cavity structure needs to be blended with the fiber to develop soft, comfortable, thermal and antibacterial multifunctional yarn in order to improve the comfort of fiber products and ensure the thermal insulation of fabrics. In view of this, the invention provides a method for producing health-care yarn.

Disclosure of Invention

The invention aims to provide a production method of health-care yarn, which comprises the steps of mixing cotton fibers and hollow far infrared polyester fibers after fine carding along the width direction of a prepared initial fiber roll by arranging a feeding mechanism and a carding mechanism which are arranged in parallel left and right and a condensing roller which is simultaneously contacted with the two carding mechanisms, pressing and combining an even number of initial mixed fiber rolls along the thickness direction and stretching and straightening along the length direction to obtain a required mixed fiber roll, and mixing cotton fibers and hollow far infrared polyester fibers along the thickness direction of the prepared mixed fiber roll, so that the more uniform mixing effect of the two fibers is realized; the mixed fiber rolls are sequentially subjected to a fiber roll drafting group of a slivering machine and then subjected to a fiber roll drafting group to obtain mixed fiber rolls with required linear density, and then the mixed fiber rolls are subjected to gradual drafting and gathering to realize the production and processing from the fiber rolls to the fiber rolls, so that the processing efficiency is improved, and meanwhile, the fiber straightening degree in the prepared fiber rolls is effectively improved, so that the health-care yarn with excellent yarn quality is prepared.

In order to achieve the above purpose, the specific technical scheme of the production method of the health care yarn of the invention is as follows:

a method for producing a health yarn, comprising the steps of:

the first step: the mixture is boiled and becomes a flow,

the optimized cotton fibers sequentially pass through a reciprocating bale plucker with a bridge magnet, a three-in-one metal spark heavy sundries detector, a heavy object separator, a single-shaft flow cotton opener with a condenser, a 10-bin cotton mixer with a fan, a cotton cleaner with an iron absorbing device and a dust removing machine to obtain cotton fiber flows; the optimized hollow far infrared polyester fiber flow is prepared by sequentially passing through a reciprocating bale plucker with a bridge magnet, a metal spark heavy sundries three-in-one detector, a heavy object separator, a 6-bin cotton mixer with a fan and a cotton cleaner with a magnet absorbing device;

selecting cotton fibers by using a sorting queuing method, blending the cotton fibers with single Mark hollow infrared polyester, sorting and queuing the cotton fibers according to warehouse fiber reserves and quality and by combining yarn varieties and purposes, adopting the principle of batch, small quantity and multiple mark during batch receiving, reducing the fluctuation of raw material properties, selecting raw cotton with high strength, slightly more short velvet, general impurity content and white color with fewer neps for meeting yarn quality requirements, and using 10 raw cotton teams in total when blending cotton, wherein the proportion of each team is 10%; for the hollow far infrared polyester staple fiber, adopting a single mark with the ratio of length to linear density of 23.8; during opening and cleaning, the raw cotton knots and short velvet are controlled, the cotton knot growth rate is controlled within 100%, the short velvet rate growth rate is controlled within 1%, and for cotton fibers, the cotton opening machine and the cotton cleaning machine are reasonably separated from each other to remove impurities, and large impurities and sterile seeds are mainly removed; for the hollow far infrared polyester fiber, as the fiber has a cavity structure, the fiber is fluffy and has lower strength than common polyester, so as to protect the cavity structure, ensure the warmth retention of the blended yarn and reduce the damage of the fiber, follow the process principles of less grabbing, duty grabbing, more loosening, tapping and fully mixing, select a proper beater form, and reasonably select beater speed and gauge parameters; in the bale plucker, the principle of multi-pack taking, fine grabbing, grabbing and trolley operation rate improvement is followed, double-beater and saw-tooth blades are adopted for beater rotation speed, beater diameter is 2300mm, width is large, lower beater speed is selected for reducing fiber damage, good opening effect is obtained, the distance between the blades extending out of ribs is increased, small grabbing is realized in the range of 2.5-7.5mm for improving opening, small grabbing is selected in the range of 2.5-7.5mm for small workshop intermittent descending distance, small grabbing is performed in the range of 2-4mm for ensuring opening effect and reducing energy consumption under the premise of allowing yield, and high trolley operation speed is set for improving mixing effect, and 10 team raw materials are adopted for cotton, so that the trolley rotation speed is slightly high when the raw materials are cotton; in the cotton opener, for the cotton opening roller rotating speed, a variable frequency motor is adopted to steplessly control the roller rotating speed, 10 gears are adopted to set, the rotating speed of each gear is changed by 48r/min, the range is 480-960r/min, for the distance between the cotton opening roller and a dust rod, the distance between an inlet and an outlet is gradually increased and is set between 12-19mm, and for the distance between the dust rod and the dust rod, in order to prevent the larger impurity from increasing the impurity removing burden after being broken, the cotton opening roller is firstly subjected to doffing, so that the inlet distance is larger and is set between 3.1-8.3 mm; in the cotton mixer, 10 bins are adopted for cotton fibers, 6 bins are adopted for hollow far infrared polyester, the bin changing pressure and the beater rotating speed are set in positive correlation, and the beater rotating speed is selected from 356, 442, 552, 668 and 730 r/min; in the scutcher, saw-tooth beater is selected for cotton fibers, and comb needle beater is selected for hollow far-infrared polyester staple fibers, so that beater speed is selected at a lower speed;

And a second step of: mixing the materials to form a roll,

the cotton fiber flow and the hollow far infrared polyester fiber flow prepared in the first step are jointly processed by a carding and lapping machine to form an initial mixed fiber roll, the initial mixed fiber roll comprises a feeding mechanism, a carding mechanism and a lapping mechanism along the movement direction of fibers in the carding and lapping machine from back to front, the feeding mechanism comprises a cotton feeding box, the cotton feeding box comprises a first cotton feeding box and a second cotton feeding box which are arranged in parallel left and right, a first feeding device is arranged at the front part of the first cotton feeding box, the first feeding device comprises an upper feeding roller and a lower supporting plate, the upper feeding roller and the lower supporting plate are tightly pressed, the upper feeding roller is of a circular ring structure, the upper feeding roller is made of hard rubber material, a first driving shaft is embedded in the middle hollow of the upper feeding roller, one end of the first driving shaft extends out of the upper feeding roller, and the extending end of the first driving shaft is driven to rotate by a corresponding driving mechanism, the upper feeding roller is driven to synchronously rotate, the lower supporting plate is made of hard wood, the rear part of the lower supporting plate is made of cuboid structure, the front part of the lower supporting plate is made of an upward protruding arc structure, so that the upper feeding roller and the rear part of the lower supporting plate keep constant pressure in the rotating process, the upper feeding roller and the front part of the lower supporting plate keep pressure which is increased and then reduced until the upper feeding roller completely disappears in the rotating process, a second feeding device is arranged at the front part of the second cotton feeding box and comprises an upper pressing finishing plate and a lower supporting feeding roller, the upper pressing finishing plate and the lower supporting feeding roller are tightly pressed, the lower supporting feeding roller is made of a circular ring structure, the lower supporting feeding roller is made of soft rubber, a second driving shaft is embedded in a middle hollow of the lower supporting feeding roller, the second driving shaft is fixedly connected with the inner circular surface of the lower supporting feeding roller, one end of the second driving shaft stretches out of the lower supporting feeding roller, the stretching end of the second driving shaft is driven by a corresponding transmission mechanism to rotate, then the lower supporting feeding roller is driven to synchronously rotate, the upper pressing finishing plate is made of hard wood, the rear part of the upper pressing finishing plate is of a cuboid structure, the front part of the upper pressing finishing plate is of a downward convex arc structure, so that the lower supporting feeding roller keeps constant pressure between the lower supporting feeding roller and the rear part of the upper pressing finishing plate in the rotating process, the lower supporting feeding roller keeps pressure which is increased and then reduced until the pressure completely disappears in the rotating process, the front part of the first feeding device is provided with a first opening roller which is of a cylinder structure, the circumference of the side surface of the first opening roller is provided with a first opening card clothing which comprises a long opening card clothing with small length and distribution density and a short opening card clothing with short length and large distribution density, the carding mechanism comprises a first carding device and a second carding device, the front part of the first opening roller is provided with the first carding device, the first carding device comprises a first upper carding cover and a first lower carding roller, the first upper carding cover consists of a certain number of first carding sheets, the first carding sheets are of cuboid structures, the front ends and the rear ends of the first carding sheets are respectively connected by a first front toothed belt and a first rear toothed belt, thereby forming a first upper carding cover of an arc-shaped annular structure, the side surface of the first carding sheet of the first upper carding cover facing the outer side is provided with the first upper carding clothing, the first upper carding clothing comprises carding clothing with long length and small distribution density and short suction clothing with short length and large distribution density, the short suction clothing is distributed among the carding clothing, the first upper driving rollers are embedded in the first upper carding cover, first upper driving teeth are respectively distributed on the front side circumference and the rear side circumference of the first upper driving rollers, the first upper driving teeth on the front side circumference are embedded in the first front toothed belt and the first upper driving teeth on the rear side circumference are embedded in the first rear toothed belt, thereby realizing the transmission connection between the first upper driving rollers and the first upper carding cover, the corresponding transmission mechanism drives each first upper driving roller to rotate and then drives the first upper carding cover to correspondingly rotate, the first lower carding roller is of a cylindrical hollow structure, the first lower carding clothing is arranged on the side circumference of the first lower carding roller, the first lower carding roller is driven by the corresponding transmission mechanism to rotate,

A second opening roller is arranged at the front part of the second feeding device, the second opening roller is in a cylindrical structure, a second opening card cloth is arranged on the circumference of the side surface of the second opening roller, the second opening card cloth comprises opening card cloth, the opening card cloth on the second opening card cloth has distribution density larger than that of the opening card cloth on the first opening card cloth and length smaller than that of the opening card cloth on the first opening card cloth, a second carding device is arranged at the front part of the second opening roller, the second carding device comprises a second upper carding cover and a second lower carding roller, the second upper carding cover consists of a certain number of second carding sheets, the second carding sheets are in a cuboid structure, the front end and the rear end of the second carding sheet are respectively connected by a second front toothed belt and a second rear toothed belt, thereby forming a second upper carding cover of an arc-shaped annular structure, a second upper carding wire cloth is arranged on the side surface of the second upper carding plate facing the outer side, the second upper carding wire cloth comprises a carding wire cloth, the distribution density of the carding wire cloth on the second upper carding wire cloth is larger than that of the carding wire cloth on the first upper carding wire cloth, the length of the carding wire cloth is equal to that of the carding wire cloth on the first upper carding wire cloth, 3-6 second upper driving rollers are embedded in the second upper carding plate, second upper driving teeth are respectively distributed on the front side circumference and the rear side circumference of the second upper driving rollers, the second upper driving teeth on the front side circumference are embedded in the second front toothed belt, the second upper driving teeth on the rear side circumference are embedded in the second rear toothed belt, thereby realizing the transmission connection between the second upper driving rollers and the second upper carding plate, the corresponding transmission mechanism drives the second upper driving rollers to rotate so as to drive the second upper carding plate to rotate correspondingly, the second lower carding rollers are in cylindrical hollow structures, the diameter of the second lower carding roller is the same as that of the first lower carding roller, a second lower carding card clothing is arranged on the side circumference of the second lower carding roller, the second lower carding roller is driven to rotate by a corresponding transmission mechanism, a fiber supporting impurity removing device is jointly arranged at the lower parts of the first lower carding roller and the second lower carding roller, the fiber supporting impurity removing device comprises a front carding plate, a middle impurity removing plate and a rear carding plate, the front carding plate is of an arc solid structure, the front carding card clothing is arranged on the front carding plate, thereby realizing static carding and supporting action on fibers on the corresponding lower carding roller, the rear carding plate is of an arc solid structure, the rear carding card clothing is arranged on the rear carding plate, thereby realizing static carding and supporting action on the fibers on the corresponding lower carding roller, the middle impurity removing plate is of an arc hollow structure, the hollow parts of the middle impurity removing plate are arranged at equal radian intervals, the impurity removing strips are of arc structures and keep a certain gap between the impurity removing plates, the middle impurity removing plates are arranged on the middle impurity removing plate,

The lapping mechanism comprises 3-6 condensing rollers, the condensing rollers are of hollow cylindrical structures, condensing card clothing is arranged on the condensing rollers, the condensing rollers are simultaneously in contact with the first lower carding roller and the second lower carding roller, the condensing rollers are arranged at equal radian intervals along the cambered surfaces of the front sides of the first lower carding roller and the second lower carding roller, each condensing roller is driven to rotate by a uniform transmission mechanism, a lapping device is arranged at the front part of each condensing roller, the lapping device comprises an upper lapping roller, an upper middle lapping roller, a middle lower lapping roller and a lower lapping roller, the upper lapping roller is in tight pressing contact with the upper lapping roller, the middle upper lapping roller is in tight pressing contact with the middle lower lapping roller, the middle lower lapping roller is in tight pressing contact with the lower lapping roller, the upper lapping roller is driven to anticlockwise rotate by the corresponding transmission mechanism, the middle upper lapping roller is driven to synchronously rotate, the middle lapping roller is driven to synchronously rotate, and the middle lower lapping roller is driven to synchronously rotate;

when in use, the cotton fiber flow prepared in the first step is directly conveyed into a first cotton feeding box of a carding machine through a conveying pipeline, the prepared hollow far infrared polyester fiber flows through the conveying pipeline provided with a cotton distribution tee joint and is distributed into a second cotton feeding box of the carding machine, the cotton fiber flow is output from the bottom after being uniformly tidied under the control of the height in the first cotton feeding box, the output cotton fiber flow is held and fed between an upper feeding roller and a lower supporting and holding plate of a first feeding device, during the holding and feeding process, the cotton fiber flow is steadily pressed and fed through the rear part of the upper feeding roller and the lower supporting and holding plate, the cotton fiber flow is uniformly flattened under the constant pressing force between the upper feeding roller and the lower supporting and holding plate, so that the cotton fiber flow is conveyed in a horizontal distribution state with relatively consistent thickness, then the front conveying is carried out under the gradually increased pressing and gradually reduced pressing between the front part of the upper feeding roller and the lower supporting and holding plate, so that the thickness of the transported cotton fiber flow is gradually reduced, when one end of the cotton fiber is subjected to the maximum pressing force between the upper feeding roller and the lower supporting plate in the transportation process, the other end starts to receive the striking opening action of the first opening roller, under the rotation of the first opening roller, the acting force generated by the rotation of the opening card clothing driven by the rotation of the first opening roller enables the opening card clothing to gradually extend into the cotton fiber, the striking opening action of the cotton fiber is realized, under the striking action, the longer cotton fiber is held by the opening card clothing due to the fact that the fiber length is larger than the distance between two adjacent card teeth of the opening card clothing, the shorter cotton fiber is sunk between the short card clothing due to the fact that the fiber length is smaller than the distance between two adjacent card teeth of the opening card clothing, the cotton fibers which are beaten and loosened are completely transferred onto the first loosening roller along with continuous feeding, and along with the rotation of the first loosening roller, when the fibers rotate to the part of the first loosening roller, which is abutted against the first lower carding roller of the first carding device, under the combined action of the push-out acting force generated by the opening needle cloth and the inner pulling acting force generated by the first lower carding card clothing of the first lower carding roller, the cotton fibers on the first loosening roller are completely transferred onto the first lower carding card clothing of the first lower carding roller, and the cotton fibers which are sunk into the staple removing card clothing are continuously kept in a sunk state by the clamping action of the card clothing on the fibers, so that the first short-time effect on the cotton fibers is realized, the cotton fibers which are transferred onto the first lower carding roller are driven by the rotation of the first lower carding roller to enter into a carding area between the first lower carding roller and the first upper carding cover, the cotton fibers on the first lower carding roller are thrown onto the first upper carding cover under the combined action of the push-out acting force generated by the first lower carding card clothing, so that the cotton fibers on the first lower carding roller are completely transferred onto the first lower carding card clothing, the cotton fibers on the first lower card clothing are gradually transferred onto the first lower card clothing, and the cotton fibers are gradually and the cotton fibers are continuously transferred into the first short-carding area due to the reciprocating card clothing, and the cotton fibers are continuously in the small-split area between the first lower card clothing, and the first short-down force is gradually and the cotton fibers are continuously kept in a small-down state between the cotton fibers, and the cotton fibers are continuously in a small-down state due to the condition between the cotton fibers is continuously transferred by the cotton fibers and the cotton fibers are continuously in the cotton and down and the cotton and down. The cotton fibers which are sunk between the short-absorbing card clothing are driven to the outer side which is opposite to the first lower carding roller along with the rotation of the first upper carding cover, and then are removed by the cleaning brush, thereby realizing the second short-removing effect on the cotton fibers,

The hollow far infrared polyester fiber flow is output from the bottom after being uniformly tidied under the height control in the second cotton feeding box, the hollow far infrared polyester fiber flow after being output is held and fed between an upper pressing tidying plate and a lower supporting feeding roller of a second feeding device, the feeding speed control of the cotton fiber and the hollow far infrared polyester fiber is realized by arranging the rotating speeds of the upper feeding roller and the lower supporting feeding roller, thus realizing the mixing proportion control of the two fibers, during the holding and feeding process, the hollow far infrared polyester fiber flow is tidied and fed under the stable pressing between the upper pressing tidying plate and the rear part of the lower supporting feeding roller, the hollow far infrared polyester fiber flow is uniformly flattened under the constant pressing force between the upper pressing tidying plate and the lower supporting feeding roller, so that the hollow far infrared polyester fiber flow is conveyed in a horizontal distribution state with relatively consistent thickness, then the front part of the upper pressing tidying plate and the lower supporting feeding roller is pressed gradually, and then conveyed forward under the gradually decreasing pressing, so that the thickness of the conveyed hollow far infrared polyester fiber flow is gradually reduced, the hollow far infrared polyester fibers are gradually and uniformly distributed in a single fiber shape along the width direction, the fluffy hollow far infrared polyester fibers are fed in a downward state under the downward pressing action of the front part of the upper pressing finishing plate along with the reduction of the pressing acting force, when one end of the hollow far infrared polyester fibers is subjected to the maximum pressing force between the upper pressing finishing plate and the lower supporting feeding roller in the conveying process, the other end starts to receive the striking and opening action of the second opening roller, under the rotation of the second opening roller, the second opening roller rotates to drive the opening needle cloth to rotate, the acting force generated by the rotation of the second opening needle cloth enables the opening needle cloth to gradually extend into the space between the hollow far infrared polyester fibers, the hollow far infrared polyester fiber is completely transferred to the second opening roller along with continuous feeding, and the hollow far infrared polyester fiber transferred to the second lower carding roller enters a carding area between the second lower carding roller and the second upper carding cover under the rotation drive of the second lower carding roller along with the rotation of the second opening roller under the combined action of the push-out acting force generated by the opening needle cloth and the inner pulling acting force generated by the second lower carding needle cloth of the second lower carding roller when the fiber rotates to the part of the second opening roller closely abutting the second lower carding roller of the second carding device, in the carding area, the hollow far infrared polyester fibers on the second lower carding roller are thrown to the second upper carding cover under the driving of rotation, so that the hollow far infrared polyester fibers are clamped by the carding clothing in the second upper carding clothing due to longer length, impurities with smaller volume are sunk between the carding clothing due to shorter length, along with the increase of the number of the carding clothing fibers in the carding clothing of the second upper carding clothing, the carding clothing fibers are transferred to the second lower carding clothing of the second lower carding roller again, the reciprocating transfer effect of the hollow far infrared polyester fibers in the carding area is realized, and the hollow far infrared polyester fiber amounts in the second lower carding clothing and the carding clothing in the second upper carding clothing are kept in dynamic balance in the reciprocating transfer, the contact force between the hollow far infrared polyester fibers is gradually reduced in the reciprocating transferring process, so that the fine carding effect of the hollow far infrared polyester fibers is realized, impurities which are sunk into the carding card clothing are driven to the outer side of the second lower carding roller back along with the rotation of the second upper carding cover, then the impurities are removed through the cleaning brush, the impurity removing effect of the hollow far infrared polyester fibers is realized,

The cotton fibers which are taken out of the carding area by the first lower carding roller and the hollow far infrared polyester fibers which are taken out of the carding area by the second lower carding roller are then rotated to the contact position with the condensing roller, at the moment, under the internal pulling force of the condensing card cloth on the condensing roller on the fibers, the cotton fibers on the first lower carding card cloth are transferred to the condensing card cloth, the hollow far infrared polyester fibers on the first lower carding card cloth are transferred to the condensing card cloth, and as the diameter of the condensing roller is smaller than that of the first carding roller and the second carding roller, the stripped cotton fibers and the hollow far infrared polyester fibers are condensed into a mixed fiber web on the condensing card cloth, and the cotton fibers are distributed on the left side and the hollow far infrared polyester fibers are distributed on the right side on the mixed fiber web, at this time, the respective condensing rollers sequentially strip cotton fibers on the first lower carding roller and hollow far infrared polyester fibers on the second lower carding roller and condense the cotton fibers which are not stripped by the condensing rollers into corresponding mixed fiber webs, the cotton fibers which are not stripped by the condensing rollers continue to rotate under the drive of the first lower carding roller, the hollow far infrared polyester fibers which are not stripped by the condensing rollers continue to rotate under the drive of the second lower carding roller, when rotating to the lower side of the carding roller, the holding of the front carding plate, the middle impurity removing plate and the rear carding plate continue to rotate along the carding roller, the sequential static carding action of the front carding card cloth on the front carding plate, the middle carding card cloth on the middle impurity removing plate and the rear carding card cloth on the middle impurity removing plate is realized in the holding process, and simultaneously, the falling removal of impurities is realized between two impurity removing strips of the middle impurity removing plate, the mixed fiber webs firstly enter between the middle rolling roller of the upper rolling roller from the rear side of the rolling device, then the front side enters between the middle upper rolling roller and the middle lower rolling roller, and finally the rear side enters between the middle lower rolling roller and the lower rolling roller for outputting, so that the tight pressing combination among the mixed fiber webs is realized in an S-shaped route in a rolling device, the fibers in the mixed fiber webs are mutually permeated under the pressing action, an initial mixed fiber roll with the fibers in mutual tight contact is obtained, and then the direct combination and mixing of cotton fibers and hollow far infrared polyester fibers in the width direction of the initial mixed fiber roll are realized;

And a third step of: stretching the mixture into strips,

the initial mixed fiber rolls prepared in the second step are combined and stretched by a doubling device to obtain required mixed fiber rolls, in the doubling process, an even number of initial mixed fiber rolls are combined and fed in an up-down state, cotton fibers and hollow far infrared polyester fibers in two adjacent initial mixed fiber rolls are vertically staggered, namely, cotton fibers are arranged on the left side of one initial mixed fiber roll, hollow far infrared polyester fibers are arranged on the right side of the other initial mixed fiber roll, cotton fibers are arranged on the left side of the adjacent initial mixed fiber roll, and the pressing system of the doubling device presses the initial mixed fiber rolls to realize the combination, so that the cotton fibers and the hollow far infrared polyester fibers in each initial mixed fiber roll are mixed in the thickness direction under the pressing action, and the combined fiber rolls then enter a drafting system of the doubling device to perform a small drafting action along the length direction, so that the stretching action is realized under the small drafting action to obtain the required mixed fiber rolls; the prepared mixed fiber rolls are directly prepared into mixed fiber strips through a slivering machine, the slivering machine comprises 1-2 fiber roll drafting groups and 1-3 fiber roll drafting groups, the fiber roll drafting groups are positioned at the rear part of the fiber roll drafting groups, the fiber roll drafting groups comprise rear fiber roll drafting roller pairs positioned at the rear part and front fiber roll drafting roller pairs positioned at the front part, the rear fiber roll drafting roller pairs and the front fiber roll drafting roller pairs comprise upper fiber roll drafting rollers and lower fiber roll drafting rollers, the upper fiber roll drafting rollers and the lower fiber roll drafting rollers comprise roller barrels, the roller barrels are of solid cylindrical structures, upper bulges which are arranged according to a certain sequence are arranged on the side circumferences of the roller barrels of the upper fiber roll drafting rollers, the upper bulges are round or elliptic, a certain interval is kept between the upper bulges, the side circumference of the roller barrel of the lower fiber roll drafting roller is provided with lower bulges which are arranged according to a certain sequence, the lower bulges are round or oval, a certain interval is kept between the lower bulges, when the upper fiber roll drafting roller and the lower fiber roll drafting roller are pressed, the upper bulges of the roller barrel of the upper fiber roll drafting roller are just embedded in the interval between the lower bulges of the roller barrel of the lower fiber roll drafting roller, and simultaneously, the lower bulges of the roller barrel of the lower fiber roll drafting roller are just embedded in the interval between the upper bulges of the roller barrel of the upper fiber roll drafting roller, the front part of the fiber roll drafting group is provided with a first gathering port, the first gathering port is in a flat structure, the left side of the first gathering port is in an arc structure protruding rightward, the right side is in an arc structure protruding leftward, so that the caliber gradually decreases from an inlet to an outlet along the length direction of the first gathering port, the aperture ratio of the aperture at the inlet and the aperture at the outlet of the first gathering port is equal to the ratio of the output line speed of the front fiber roll drafting roller pair to the output line speed of the rear fiber roll drafting roller pair of the fiber roll drafting group at the rear side of the first gathering port, the left side surface of the first gathering port is of an arc structure protruding towards the left and the right side surface of the first gathering port is of an arc structure protruding towards the right,

The fiber strip drafting group comprises a rear fiber strip drafting roller pair positioned at the rear part and a front fiber strip drafting roller pair positioned at the front part, wherein the rear fiber strip drafting roller pair and the front fiber strip drafting roller pair comprise an upper fiber strip drafting roller and a lower fiber strip drafting roller, the upper fiber strip drafting roller comprises a rubber roll shaft made of iron, a rubber roll sleeve made of rubber is sleeved on the rubber roll shaft, the rubber roll sleeve and the rubber roll shaft are connected through a needle bearing, so that the rubber roll sleeve can freely rotate around the rubber roll shaft, the lower fiber strip drafting roller comprises a roller shaft made of iron, the roller shaft is in a solid cylindrical structure, the roller shaft is sleeved with the rubber roll sleeve, the rubber roll sleeve and the rubber roll shaft are integrally and fixedly connected, threads are arranged on the rubber roll sleeve along the length direction, a certain distance is kept between the threads, a second gathering port is arranged at the front part of the fiber strip drafting group, the rear port comprises a rear gathering port and a front gathering port, the rear port of the rear gathering port is in a flat structure, the front port of the rear gathering port is in a cylindrical structure, the front port of the rear gathering port is in a flat structure, the diameter of the cylindrical structure is gradually reduced from the front port to the front port of the fiber strip drafting group, the front port is gradually reduced from the front port to the front port, the front port is in the cylindrical structure, the diameter of the cylindrical structure is gradually reduced from the front port is gradually reduced to the front port, the front port is gradually reduced from the front port is in the front port, and the front port is gradually reduced from the front port is formed to the front port, and the front port is formed, and the front port is gradually reduced from the front port is formed, and the front port is gradually, and the front port is formed, and the front is has the front and the drawing down along the drawing line is has a drawing down line, and the drawing down and the drawing line, and the drawing and has the drawing and has the,

When in use, the prepared mixed fiber roll is firstly fed into a fiber roll drafting group positioned at the rearmost part of a slivering machine, at the moment, the mixed fiber roll is fed by a rear fiber roll drafting roller pair and then is output by a front fiber roll drafting roller pair, so that the rear part of the mixed fiber roll is tightly held under the mutual embedding action of the interval between the upper bulge of the roller cylinder of the upper fiber roll drafting roller of the rear fiber roll drafting roller pair and the lower bulge of the roller cylinder of the lower fiber roll drafting roller and the interval between the lower bulge of the roller cylinder of the corresponding lower fiber roll drafting roller and the upper bulge of the roller cylinder of the upper fiber roll drafting roller, the front part of the mixed fiber roll is tightly held under the mutual embedding action of the interval between the upper bulge of the roller cylinder of the upper fiber roll drafting roller of the front fiber roll drafting roller pair and the lower bulge of the roller cylinder of the lower fiber roll drafting roller of the upper bulge of the upper fiber roll drafting roller, thereby realizing the stable drafting action of the mixed fiber roll with a certain width under the tight holding, the drafting size is equal to the ratio of the output line speed of the front fiber roll drafting roller pair to the output line speed of the rear fiber roll drafting roller pair, the linear density of the mixed fiber roll is reduced under the drafting action, namely the fiber distribution density of the mixed fiber roll under the condition that the width is kept unchanged is reduced, the mixed fiber roll output after the drafting is then fed into a first gathering port, the mixed fiber roll is gradually gathered along the width direction in the first gathering port, then the fibers in the mixed fiber roll are gathered again along the width direction, then the density of the mixed fiber roll after the drafting is restored to the state before the drafting, the mixed fiber rolls are drawn and gathered step by step through the fiber roll drawing groups, so that the mixed fiber rolls are drawn and gathered through a certain number of fiber roll drawing groups to obtain drawn fiber rolls with unchanged fiber distribution density along the width direction and gradually reduced width, the drawn fiber rolls subsequently enter the fiber strip drawing groups,

At the moment, the draft fiber roll is fed by a rear fiber strip draft roller pair and then is output by a front fiber strip draft roller pair, so that the rear part of the draft fiber roll is tightly pressed and held between a rubber roller sleeve of an upper fiber strip draft roller of the rear fiber strip draft roller pair and a roller sleeve of a lower fiber strip draft roller, the front part of the draft fiber roll is tightly pressed and held between the rubber roller sleeve of the upper fiber strip draft roller of the front fiber strip draft roller pair and the roller sleeve of the lower fiber strip draft roller, during the holding process, the rubber roller sleeve and the hard iron roller sleeve are tightly pressed, thereby the rubber roller sleeve generates elastic deformation, the stable draft effect of the draft fiber roll with obviously reduced width is realized, the draft size is equal to the ratio of the output line speed of the front fiber strip draft roller pair to the output line speed of the rear fiber strip draft roller pair, the linear density of the drawn fiber roll is reduced under the action of drawing, namely the fiber distribution density of the drawn fiber roll is reduced under the condition that the width of the drawn fiber roll is kept unchanged, the drawn fiber roll output after drawing then enters into a second gathering port, the drawn fiber roll is gradually gathered along the width direction in a rear gathering port of the second gathering port, then the fibers in the drawn fiber roll are gathered again along the width direction, the density of the drawn fiber roll after drawing is restored and increased again, and then the drawn fiber roll continuously enters into a front gathering port of the second gathering port, so that the fibers in the drawn fiber roll are gathered towards the middle along the width direction, the fibers are piled up upwards and downwards along the thickness direction while gathering, the distribution of the fibers in the space direction is realized, and the caliber of the front gathering port is reduced, the method comprises the steps that distribution in the thickness direction is more concentrated, an input coiled drawing fiber roll is gradually converted into columnar mixed fiber strips, the output mixed fiber strips continuously enter a fiber strip drawing group, the mixed fiber strips are fed by a rear fiber strip drawing roller pair and then output by a front fiber strip drawing roller pair, the rear part of the drawing fiber roll is tightly pressed and held between a rubber roller sleeve of an upper fiber strip drawing roller and a roller sleeve of a lower fiber strip drawing roller of the rear fiber strip drawing roller pair, the front part of the drawing fiber roll is tightly pressed and held between the rubber roller sleeve of the upper fiber strip drawing roller and the roller sleeve of the lower fiber strip drawing roller of the front fiber strip drawing roller pair, the fiber strips are converted into flat shapes again in the pressing process, the linear density of the mixed fiber strips is reduced under the drawing action, the flat mixed fiber strips output after drawing are then enter a second gathering port, the flat mixed fiber strips are gradually gathered along the width direction in the rear gathering port of the second gathering port, and then the flat mixed fiber strips enter the second gathering port of the second gathering port, and the mixed fiber strips are not required to be changed in the whole process, and the mixed fiber density of the mixed fiber strips is reduced;

Fourth step: twisting the yarn to form yarn,

the mixed fiber strip prepared in the third step is subjected to one-step strip finishing, roving and spinning to prepare the required health-care yarn; 6 mixed fiber strips are fed together in the whole strip, and 6 mixed fiber strips after feeding are folded, drawn by 6 times and gathered to obtain a mixed fiber cooked strip with improved evenness; the mixed fiber sliver is prepared into mixed roving with certain strength through roving, 2 mixed fiber sliver is fed into the roving together, 2 mixed fiber sliver is sequentially subjected to drafting, twisting and winding to prepare mixed roving, the mixed roving is wound on a bobbin, a four-roller double-rubber-ring drafting device is adopted in the drafting process, the drafting multiple is set within 10, the back zone is simple roller drafting, the controlled state of floating fiber is not ideal, the drafting multiple is small, the structure of the sliver entering into a main drafting zone is good, the roving sliver is improved, and the back zone drafting multiple is set between 1.06 and 1.53; the mixed roving is made into health-care yarn with certain strength by spun yarn, 2 mixed rovings are fed together, 2 mixed rovings are sequentially drafted and rolled to obtain the health-care yarn, and are wound on a bobbin, in the drafting process, a rear zone provides a basis for front zone drafting, a drafting multiple is set slightly, the rear zone drafting multiple is set between 1.055 and 1.2, the front zone drafting adopts a process of small jaw gauge, heavy pressurization and short floating zone length, and the drafting multiple is selected slightly higher.

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

the invention provides a production method of health-care yarn, which comprises the steps of sequentially passing preferred cotton fibers through a reciprocating bale plucker with a bridge magnet, a metal spark heavy sundries three-in-one detector, a heavy object separator, a single-shaft flow opener with a condenser, a 10-bin cotton mixer with a fan, a cotton cleaner with an iron suction device, a dust removing machine to produce cotton fiber flow, sequentially passing preferred hollow far infrared polyester fibers through the reciprocating bale plucker with the bridge magnet, the metal spark heavy sundries three-in-one detector, the heavy object separator, an 8-bin cotton mixer with the fan and the cotton cleaner with the iron suction device to produce hollow far infrared polyester fiber flow, directly conveying the cotton fiber flow into a first cotton feeding box of a carding machine through a conveying pipeline, distributing the hollow far infrared polyester fiber flow into a second cotton feeding box of the carding machine through the conveying pipeline provided with a cotton distribution tee, finishing the cotton fiber flow through the first cotton feeding box, feeding the cotton fiber flow through a first feeding mechanism consisting of an upper feeding roller and a lower supporting plate, after feeding, fine carding and impurity removal are carried out through a first carding device consisting of a corresponding lower carding roller and an upper carding cover plate, hollow far infrared polyester fibers are processed through a second cotton feeding box and fed through a second feeding mechanism consisting of an upper pressing finishing plate and a lower supporting feeding roller, after feeding, fine carding and impurity removal are carried out through a second carding device consisting of a corresponding lower carding roller and an upper carding cover plate, cotton fiber flow on the lower carding roller of the first carding device and cotton fiber flow on the lower carding roller of the second carding device are simultaneously grabbed corresponding fibers through a condensing roller which is contacted with the cotton fiber flow and is arranged at equal radian intervals, mixed fiber webs are obtained, initial mixed fiber rolls are obtained after the mixed fiber webs are combined up and down, and an even number of initial mixed fiber rolls are pressed and combined in the thickness direction, and the initial mixed fiber rolls are combined, stretching and straightening in the length direction to obtain a required mixed fiber roll, wherein adjacent initial mixed fiber rolls are staggered along the width direction, so that the cotton fibers and the hollow far infrared polyester fibers are mixed along the thickness direction, the mixed fiber roll is manufactured into mixed fiber strips through a strip forming machine, the strip forming machine comprises a certain number of fiber roll drafting groups and a certain number of fiber strip drafting groups, the front part of each fiber roll drafting group is provided with a flat and tapered first gathering port to realize gathering of the fiber rolls with reduced linear density along the width direction after drafting, the front part of each fiber strip drafting group is provided with a flat and tapered rear part, the front part of each fiber strip drafting group is provided with a columnar and tapered second gathering port to realize gathering of the fiber strips with reduced linear density along the width direction and then bulging along the thickness direction, and the fed mixed fiber rolls sequentially pass through the fiber roll drafting groups and then pass through the fiber strip drafting groups to obtain the mixed fiber strips with required linear density; the mixed fiber strip is subjected to one-step sliver finishing, roving and spinning to obtain the required health-care yarn.

According to the invention, the cotton fiber flow and the hollow far infrared polyester fiber flow which are obtained after opening and cleaning are respectively fed into a carding device which is arranged in parallel left and right through respective feeding mechanisms, and the corresponding fibers are simultaneously grabbed through the condensing rollers which are simultaneously contacted with the two carding devices and are arranged at equal radian intervals to obtain an initial mixed fiber net, so that the two fibers are mixed along the width direction of the fiber net, an even number of initial mixed fiber rolls are pressed and combined along the thickness direction and stretched and straightened along the length direction to obtain required mixed fiber rolls, and adjacent initial mixed fiber rolls are staggered along the width direction, so that the cotton fibers and the hollow far infrared polyester fibers are mixed along the thickness direction, and then a more uniform mixing effect of the two fibers is realized; the mixed fiber rolls are sequentially subjected to a fiber roll drafting group of a slivering machine and then subjected to a fiber roll drafting group to obtain the mixed fiber strips with required linear density, and then the production and the processing from the fiber rolls to the fiber strips are realized through gradual drafting and gathering, so that the processing efficiency is improved, and meanwhile, the fiber straightening degree in the prepared fiber strips is effectively improved, so that the final yarn forming quality is improved.

Drawings

In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of a slivering machine according to the present invention;

the figure indicates: 1. a fiber roll drafting group; 2. a rear fiber roll draft roller pair; 3. a front fiber roll draft roller pair; 4. a first gathering port; 5. a sliver drafting group; 6. a rear sliver drafting roller pair; 7. a front sliver drafting roller pair; 8. and a second gathering port.

Detailed Description

For a better understanding of the objects, structure and function of the invention, a method for producing a health yarn according to the invention will be described in further detail with reference to the drawings and to the detailed description.

In the description of the present invention, it should be understood that the terms "left", "right", "upper", "lower", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and "first", "second", etc. do not indicate the importance of the components, and thus are not to be construed as limiting the present invention.

Example 1:

referring to fig. 1, the present invention provides a technical solution: a method for producing a health yarn, comprising the steps of:

the first step: the mixture is boiled and becomes a flow,

And a second step of: mixing the materials to form a roll,

And a third step of: stretching the mixture into strips,

the initial mixed fiber rolls prepared in the second step are combined and stretched by a doubling device to obtain required mixed fiber rolls, in the doubling process, an even number of initial mixed fiber rolls are combined and fed in an up-down state, cotton fibers and hollow far infrared polyester fibers in two adjacent initial mixed fiber rolls are vertically staggered, namely, cotton fibers are arranged on the left side of one initial mixed fiber roll, hollow far infrared polyester fibers are arranged on the right side of the other initial mixed fiber roll, cotton fibers are arranged on the left side of the adjacent initial mixed fiber roll, and the pressing system of the doubling device presses the initial mixed fiber rolls to realize the combination, so that the cotton fibers and the hollow far infrared polyester fibers in each initial mixed fiber roll are mixed in the thickness direction under the pressing action, and the combined fiber rolls then enter a drafting system of the doubling device to perform a small drafting action along the length direction, so that the stretching action is realized under the small drafting action to obtain the required mixed fiber rolls; the prepared mixed fiber rolls are directly prepared into mixed fiber strips through a slivering machine, the slivering machine comprises 1-2 fiber roll drafting groups 1 and 1-3 fiber roll drafting groups 5, the fiber roll drafting groups 1 are positioned at the rear part of the fiber roll drafting groups 5, the fiber roll drafting groups 1 comprise rear fiber roll drafting roller pairs 2 positioned at the rear part and front fiber roll drafting roller pairs 3 positioned at the front part, the rear fiber roll drafting roller pairs 2 and the front fiber roll drafting roller pairs 3 comprise upper fiber roll drafting rollers and lower fiber roll drafting rollers, the upper fiber roll drafting rollers and the lower fiber roll drafting rollers comprise roller barrels, the roller barrels are of solid cylindrical structures, upper bulges which are arranged according to a certain sequence are arranged on the side circumferences of the roller barrels of the upper fiber roll drafting rollers, the upper bulges are round or elliptic, a certain interval is kept between the upper bulges, the side circumference of the roller cylinder of the lower fiber roll drafting roller is provided with lower bulges which are arranged according to a certain sequence, the lower bulges are round or oval, a certain interval is kept between the lower bulges, when the upper fiber roll drafting roller and the lower fiber roll drafting roller are pressed, the upper bulges of the roller cylinder of the upper fiber roll drafting roller are just embedded in the interval between the lower bulges of the roller cylinder of the lower fiber roll drafting roller, and simultaneously, the lower bulges of the roller cylinder of the lower fiber roll drafting roller are just embedded in the interval between the upper bulges of the roller cylinder of the upper fiber roll drafting roller, the front part of the fiber roll drafting group 1 is provided with a first gathering port 4, the first gathering port 4 is in a flat structure, the left side of the first gathering port 4 is in an arc structure protruding to the right, the right side is in an arc structure protruding to the left, so that the caliber gradually decreases from an inlet to an outlet along the length direction of the first gathering port 4, the diameter of the first gathering port 4 is gradually increased along the length direction, the ratio of the diameter of the first gathering port 4 at the inlet to the diameter of the first gathering port at the outlet is equal to the ratio of the output line speed of the front fiber roll drafting roller pair 3 to the output line speed of the rear fiber roll drafting roller pair 2 of the fiber roll drafting group 1 at the rear side, the left side surface of the first gathering port 4 is of an arc structure protruding towards the left and the right side surface is of an arc structure protruding towards the right,

The fiber strip drafting group 5 comprises a rear fiber strip drafting roller pair 6 positioned at the rear part and a front fiber strip drafting roller pair 7 positioned at the front part, the rear fiber strip drafting roller pair 6 and the front fiber strip drafting roller pair 7 comprise an upper fiber strip drafting roller and a lower fiber strip drafting roller, the upper fiber strip drafting roller comprises a rubber roll shaft made of iron, a rubber roll sleeve made of rubber is sleeved on the rubber roll shaft, the rubber roll sleeve is connected with the rubber roll shaft through a needle roller bearing, so that the rubber roll sleeve can freely rotate around the rubber roll shaft, the lower fiber strip drafting roller comprises a roller shaft made of iron, the roller shaft is of a solid cylindrical structure, the rubber roll sleeve is sleeved on the roller shaft, the rubber roll sleeve and the rubber roll shaft are integrally and fixedly connected, threads along the length direction are arranged on the rubber roll sleeve, a certain distance is kept between the threads, a second gathering port 8 is arranged at the front part of the fiber strip drafting group 5, the second gathering mouth 8 comprises a rear gathering mouth and a front gathering mouth, the rear port after the rear gathering is a fiber inlet, the rear port of the rear gathering mouth is in a flat structure, the front port of the rear gathering mouth is in a columnar structure, the section of the front gathering mouth along the length direction of the rear gathering mouth is gradually changed from flat to columnar, the caliber is gradually reduced, the front gathering mouth is in a columnar structure, the rear port of the front gathering mouth and the front port of the rear gathering mouth are integrally and fixedly connected, the caliber of the front gathering mouth along the length direction of the front gathering mouth is gradually reduced, the front port of the front gathering mouth is a fiber outlet, the ratio of the area of the fiber inlet of the second gathering mouth 8 to the area of the fiber outlet is equal to the ratio of the output line speed of the front fiber drawing roller pair 7 of the fiber drawing set 5 at the rear side to the output line speed of the rear fiber drawing roller pair 6,

When in use, the prepared mixed fiber roll is firstly fed into a fiber roll drafting group 1 positioned at the rearmost part of a slivering machine, at the moment, the mixed fiber roll is fed by a rear fiber roll drafting roller pair 2 and is output by a front fiber roll drafting roller pair 3, so that the rear part of the mixed fiber roll is tightly held under the mutual embedding action of the interval between the upper bulge of the roller cylinder of the upper fiber roll drafting roller of the rear fiber roll drafting roller pair 2 and the lower bulge of the roller cylinder of the lower fiber roll drafting roller and the interval between the lower bulge of the roller cylinder of the corresponding lower fiber roll drafting roller and the upper bulge of the roller cylinder of the upper fiber roll drafting roller, the front part of the mixed fiber roll is tightly held under the mutual embedding action of the interval between the upper bulge of the roller cylinder of the upper fiber roll drafting roller of the front fiber roll drafting roller pair 3 and the lower bulge of the roller cylinder of the upper fiber roll drafting roller, thereby realizing the stable drafting action of the mixed fiber roll with a certain width under the tight holding, the drafting size is equal to the ratio of the output line speed of the front fiber roll drafting roller pair 3 to the output line speed of the rear fiber roll drafting roller pair 2, the linear density of the mixed fiber roll is reduced under the drafting action, namely the fiber distribution density of the mixed fiber roll under the condition that the width is kept unchanged is reduced, the mixed fiber roll output after the drafting is then fed into the first gathering port 4, the mixed fiber roll is gradually gathered along the width direction in the first gathering port 4, and then the fibers in the mixed fiber roll are gathered again along the width direction, and then the density of the mixed fiber rolls after the drafting is restored to the density before the drafting, the mixed fiber rolls are drafted and gathered step by step through each fiber roll drafting group 1, so that the mixed fiber rolls are drafted and gathered through a certain number of fiber roll drafting groups 1 to obtain drafted fiber rolls with unchanged fiber distribution density along the width direction and gradually reduced width, the drafted fiber rolls subsequently enter into a fiber strip drafting group 5,

At this time, the draft fiber roll is fed by the rear fiber strip draft roller pair 6 and then is output by the front fiber strip draft roller pair 7, so that the rear part of the draft fiber roll is tightly pressed and held between the rubber roller sleeve of the upper fiber strip draft roller of the rear fiber strip draft roller pair 6 and the roller sleeve of the lower fiber strip draft roller, the front part of the draft fiber roll is tightly pressed and held between the rubber roller sleeve of the upper fiber strip draft roller of the front fiber strip draft roller pair 7 and the roller sleeve of the lower fiber strip draft roller, in the holding process, the rubber roller sleeve is tightly pressed with the hard iron roller sleeve, thereby the rubber roller sleeve generates elastic deformation, thereby realizing stable draft effect on the draft fiber roll with obviously reduced width, the draft size is equal to the ratio of the output line speed of the front fiber strip draft roller pair 7 to the output line speed of the rear fiber strip draft roller pair 6, the linear density of the drawn fiber roll is reduced under the action of drawing, namely, the fiber distribution density of the drawn fiber roll is reduced under the condition that the width of the drawn fiber roll is kept unchanged, the drawn fiber roll output after drawing then enters into the second gathering port 8, the drawn fiber roll is gradually gathered along the width direction in the rear gathering port of the second gathering port 8, then the fibers in the drawn fiber roll are gathered again along the width direction, the density of the drawn fiber roll after drawing is restored and increased again, then the drawn fiber roll continuously enters into the front gathering port of the second gathering port 8, the fibers in the drawn fiber roll are gathered towards the middle along the width direction, the fibers are piled up upwards and downwards along the thickness direction due to the columnar structure of the front gathering port while gathering, and the distribution of the fibers in the space direction is realized, the diameter of the front gathering mouth is reduced, so that the distribution in the thickness direction is more concentrated, the input coiled drawn fiber coil is gradually converted into columnar mixed fiber strips, the output mixed fiber strips then continue to enter the fiber strip drawing group 5, the mixed fiber strips are fed by the rear fiber strip drawing roller pair 6 and then output by the front fiber strip drawing roller pair 7, the rear part of the drawn fiber coil is tightly pressed and held between the rubber roller sleeve of the upper fiber strip drawing roller of the rear fiber strip drawing roller pair 6 and the roller sleeve of the lower fiber strip drawing roller, the front part of the drawn fiber coil is tightly pressed and held between the rubber roller sleeve of the upper fiber strip drawing roller of the front fiber strip drawing roller pair 7, so that the fiber strips are reconverted into flat shapes in the pressing process, the linear density of the mixed fiber strips is reduced under the drawing action, the flat mixed fiber strips output after the drawing are then enter the second gathering mouth 8, the flat mixed fiber strips are gradually changed in the direction along the rear gathering mouth of the second gathering mouth 8, and the whole mixed fiber strips are not changed in the direction, and the mixed fiber strips are finally mixed in the whole drawing process;

Fourth step: twisting the yarn to form yarn,

Working principle:

the invention provides a production method of health-care yarn, which comprises the steps of sequentially passing optimized cotton fibers through a reciprocating bale plucker with a bridge magnet, a metal spark heavy sundries three-in-one detector, a heavy object separator, a single-shaft flow opener with a condenser, a 10-bin cotton mixer with a fan, a cotton cleaner with an iron suction device and a dust removing machine to prepare cotton fiber flow, and sequentially passing optimized hollow far infrared polyester fibers through the reciprocating bale plucker with the bridge magnet, the metal spark heavy sundries three-in-one detector, the heavy object separator, an 8-bin cotton mixer with the fan and the cotton cleaner with the iron suction device to prepare hollow far infrared polyester fiber flow;

the method comprises the steps that cotton fiber flows are directly conveyed into a first cotton feeding box of a carding and lapping machine through a conveying pipeline, hollow far infrared polyester fibers flow through a conveying pipeline provided with a cotton distributing tee joint and are distributed into a second cotton feeding box of the carding and lapping machine, cotton fibers flow through a first feeding mechanism consisting of an upper feeding roller and a lower supporting plate after being tidied by the first cotton feeding box, are fed through a first carding device consisting of a corresponding lower carding roller and an upper carding cover plate after being fed, are finely combed and decontaminated through a first carding device consisting of an upper pressing finishing plate and a lower supporting feeding roller after being tidied by the second cotton feeding box, are fed through a second carding device consisting of a corresponding lower carding roller and an upper supporting feeding roller after being fed, are simultaneously grabbed by a mixed fiber web after being tidied by a corresponding fiber web through a condensing roller which is simultaneously contacted with the cotton fiber flow on the first carding device and the cotton fiber flow on the lower carding roller and is arranged at equal radian intervals, and are obtained after the mixed fiber web is initially mixed and blended and rolled into a mixed fiber web after the mixed web is obtained;

Then pressing and combining an even number of initial mixed fiber rolls in the thickness direction, stretching and straightening in the length direction to obtain a required mixed fiber roll, and staggering adjacent initial mixed fiber rolls in the width direction so as to realize the mixing of cotton fibers and hollow far infrared polyester fibers in the thickness direction, wherein the mixed fiber roll is prepared into a mixed fiber strip through a slivering machine, the slivering machine comprises a certain number of fiber roll drafting groups 1 and a certain number of fiber strip drafting groups 5, the front part of the fiber roll drafting groups 1 is provided with a flat and tapered first gathering port 4 to realize the gathering of the fiber rolls with reduced linear density after drafting, the front part of the fiber strip drafting groups 5 is provided with a flat and tapered second gathering port 8 with columnar and tapered front part to realize the gathering of the fiber strips with reduced linear density after drafting, and then the thickness direction is raised so as to obtain the fiber strips again, and the fed mixed fiber roll is sequentially subjected to the fiber roll drafting groups 1 and then the fiber strip drafting groups 5 to obtain the mixed fiber strips with required linear density;

the mixed fiber strip is subjected to one-step sliver finishing, roving and spinning to obtain the required health-care yarn.

It will be understood that the invention has been described in terms of several embodiments, and that various changes and equivalents may be made to these features and embodiments by those skilled in the art without departing from the spirit and scope of the invention. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from the essential scope thereof. Therefore, it is intended that the invention not be limited to the particular embodiment disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.

Claims

1. A method for producing a health yarn, comprising the steps of:

s1, opening and cleaning into a stream:

the optimized cotton fibers sequentially pass through a reciprocating bale plucker with a bridge magnet, a three-in-one metal spark heavy sundries detector, a heavy object separator, a single-shaft flow cotton opener with a condenser, a 10-bin cotton mixer with a fan, a cotton cleaner with an iron absorbing device and a dust removing machine to obtain cotton fiber flows;

the optimized hollow far infrared polyester fiber flow is prepared by sequentially passing through a reciprocating bale plucker with a bridge magnet, a metal spark heavy sundries three-in-one detector, a heavy object separator, an 8-bin cotton mixer with a fan and a cotton cleaner with a magnet absorbing device;

s2, mixing and rolling:

the cotton fiber flow and the hollow far infrared polyester fiber flow prepared in the step S1 are jointly subjected to carding and rolling to prepare an initial mixed fiber roll;

s3, stretching into strips:

merging and stretching the initial mixed fiber rolls prepared in the step S2 through a merging device to obtain required mixed fiber rolls;

in the reeling process, an even number of initial mixed fiber reels are fed in a combined mode, cotton fibers and hollow far infrared polyester fibers in two adjacent initial mixed fiber reels are fed in a staggered mode, namely, cotton fibers are arranged on the left side of one initial mixed fiber reel, hollow far infrared polyester fibers are arranged on the right side of one initial mixed fiber reel, and cotton fibers are arranged on the left side of the adjacent initial mixed fiber reel;

The initial mixed fiber rolls are pressed by a pressing system of the doubling device and then are combined, so that the cotton fibers and the hollow far infrared polyester fibers in the initial mixed fiber rolls are mixed in the thickness direction under the pressing action, and the combined fiber rolls enter a drafting system of the doubling device to perform small drafting along the length direction, so that the required mixed fiber rolls are obtained under the small drafting;

directly preparing a mixed fiber strip from the prepared mixed fiber roll by a strip forming machine;

s4, twisting into yarn:

and (3) preparing the required health-care yarn by the mixed fiber strips obtained in the step (S3) through strip finishing, roving and spinning.

2. The method of claim 1, wherein the opening process of step S1 is performed by Cheng Juti:

selecting cotton fibers by using a sorting queuing method, blending the cotton fibers with single Mark hollow infrared polyester, sorting and queuing the cotton fibers according to warehouse fiber reserves and quality and by combining yarn varieties and purposes, adopting the principle of batch, small quantity and multiple mark during batch receiving, reducing the fluctuation of raw material properties, selecting raw cotton with high strength, slightly more short velvet, general impurity content and white color with fewer neps for meeting yarn quality requirements, and using 10 raw cotton teams in total when blending cotton, wherein the proportion of each team is 10%;

For the hollow far infrared polyester staple fiber, adopting a single mark with the ratio of length to linear density of 23.8;

during opening and cleaning, the raw cotton knots and short velvet are controlled, the cotton knot growth rate is controlled within 100%, the short velvet rate growth rate is controlled within 1%, and for cotton fibers, the cotton opening machine and the cotton cleaning machine are reasonably separated from each other to remove impurities, and large impurities and sterile seeds are mainly removed;

for the hollow far infrared polyester fiber, as the fiber has a cavity structure, the fiber is fluffy and has lower strength than common polyester, so as to protect the cavity structure, ensure the warmth retention of the blended yarn and reduce the damage of the fiber, follow the process principles of less grabbing, duty grabbing, more loosening, tapping and fully mixing, select a proper beater form, and reasonably select beater speed and gauge parameters;

in the bale plucker, the principle of multi-pack taking, fine grabbing, grabbing and trolley operation rate improvement is followed, double-beater and saw-tooth blades are adopted for beater rotation speed, beater diameter is 2300mm, width is large, lower beater speed is selected for reducing fiber damage, good opening effect is obtained, the distance between the blades extending out of ribs is increased, small grabbing is realized in the range of 2.5-7.5mm for improving opening, small grabbing is selected in the range of 2.5-7.5mm for small workshop intermittent descending distance, small grabbing is performed in the range of 2-4mm for ensuring opening effect and reducing energy consumption under the premise of allowing yield, and high trolley operation speed is set for improving mixing effect, and 10 team raw materials are adopted for cotton, so that the trolley rotation speed is slightly high when the raw materials are cotton;

In the cotton opener, for the cotton opening roller rotating speed, a variable frequency motor is adopted to steplessly control the roller rotating speed, 10 gears are adopted to set, the rotating speed of each gear is changed by 48r/min, the range is 480-960r/min, for the distance between the cotton opening roller and a dust rod, the distance between an inlet and an outlet is gradually increased and is set between 12-19mm, and for the distance between the dust rod and the dust rod, in order to prevent the larger impurity from increasing the impurity removing burden after being broken, the cotton opening roller is firstly subjected to doffing, so that the inlet distance is larger and is set between 3.1-8.3 mm;

in the cotton mixer, 10 bins are adopted for cotton fibers, 6 bins are adopted for hollow far infrared polyester, the bin changing pressure and the beater rotating speed are set in positive correlation, and the beater rotating speed is selected from 356, 442, 552, 668 and 730 r/min;

in the cotton cleaner, saw-tooth beater is selected for cotton fibers, and comb needle beater is selected for hollow far-infrared polyester staple fibers, so that beater speed is selected at a lower speed.

3. The method according to claim 1, wherein the step S2 of the hybrid lapping process is specifically:

the cotton fiber flow and the hollow far infrared polyester fiber flow prepared in the step S1 are jointly processed by a carding and lapping machine to form an initial mixed fiber roll, the initial mixed fiber roll comprises a feeding mechanism, a carding mechanism and a lapping mechanism from back to front along the movement direction of the fibers in the carding and lapping machine, the feeding mechanism comprises a cotton feeding box, the cotton feeding box comprises a first cotton feeding box and a second cotton feeding box which are arranged in parallel left and right, a first feeding device is arranged at the front part of the first cotton feeding box, the first feeding device comprises an upper feeding roller and a lower supporting plate, the upper feeding roller and the lower supporting plate are tightly pressed, the upper feeding roller is of a circular ring structure, the upper feeding roller is made of hard rubber material, a first driving shaft is embedded in the middle hollow of the upper feeding roller, one end of the first driving shaft extends out of the upper feeding roller, and the extending end of the first driving shaft is driven to rotate by a corresponding driving mechanism, the upper feeding roller is driven to synchronously rotate, the lower supporting plate is made of hard wood, the rear part of the lower supporting plate is made of cuboid structure, the front part of the lower supporting plate is made of an upward protruding arc structure, so that the upper feeding roller and the rear part of the lower supporting plate keep constant pressure in the rotating process, the upper feeding roller and the front part of the lower supporting plate keep pressure which is increased and then reduced until the upper feeding roller completely disappears in the rotating process, a second feeding device is arranged at the front part of the second cotton feeding box and comprises an upper pressing finishing plate and a lower supporting feeding roller, the upper pressing finishing plate and the lower supporting feeding roller are tightly pressed, the lower supporting feeding roller is made of a circular ring structure, the lower supporting feeding roller is made of soft rubber, a second driving shaft is embedded in a middle hollow of the lower supporting feeding roller, the second driving shaft is fixedly connected with the inner circular surface of the lower supporting feeding roller, one end of the second driving shaft stretches out of the lower supporting feeding roller, the stretching end of the second driving shaft is driven by a corresponding transmission mechanism to rotate, then the lower supporting feeding roller is driven to synchronously rotate, the upper pressing finishing plate is made of hard wood, the rear part of the upper pressing finishing plate is of a cuboid structure, the front part of the upper pressing finishing plate is of a downward convex arc structure, so that the lower supporting feeding roller keeps constant pressure between the lower supporting feeding roller and the rear part of the upper pressing finishing plate in the rotating process, the lower supporting feeding roller keeps pressure which is increased and then reduced until the pressure completely disappears in the rotating process, the front part of the first feeding device is provided with a first opening roller which is of a cylinder structure, the circumference of the side surface of the first opening roller is provided with a first opening card clothing which comprises a long opening card clothing with small length and distribution density and a short opening card clothing with short length and large distribution density, the carding mechanism comprises a first carding device and a second carding device, the front part of the first opening roller is provided with the first carding device, the first carding device comprises a first upper carding cover and a first lower carding roller, the first upper carding cover consists of a certain number of first carding sheets, the first carding sheets are of cuboid structures, the front ends and the rear ends of the first carding sheets are respectively connected by a first front toothed belt and a first rear toothed belt, thereby forming a first upper carding cover of an arc-shaped annular structure, the side surface of the first carding sheet of the first upper carding cover facing the outer side is provided with the first upper carding clothing, the first upper carding clothing comprises carding clothing with long length and small distribution density and short suction clothing with short length and large distribution density, the short suction clothing is distributed among the carding clothing, the first upper carding cover is internally embedded with 3-5 first upper driving rollers, first upper driving teeth are respectively distributed on the front side circumference and the rear side circumference of the first upper driving rollers, the first upper driving teeth on the front side circumference are embedded into the first front toothed belt and the first upper driving teeth on the rear side circumference are embedded into the first rear toothed belt, so that transmission connection between the first upper driving rollers and the first upper carding cover is realized, corresponding transmission mechanisms drive the first upper driving rollers to rotate and then drive the first upper carding cover to correspondingly rotate, the first lower carding rollers are of cylindrical hollow structures, first lower carding clothing is arranged on the side circumference of the first lower carding rollers, and the first lower carding rollers are driven by corresponding transmission mechanisms to rotate;

A second opening roller is arranged at the front part of the second feeding device, the second opening roller is in a cylindrical structure, a second opening card cloth is arranged on the circumference of the side surface of the second opening roller, the second opening card cloth comprises opening card cloth, the opening card cloth on the second opening card cloth has distribution density larger than that of the opening card cloth on the first opening card cloth and length smaller than that of the opening card cloth on the first opening card cloth, a second carding device is arranged at the front part of the second opening roller, the second carding device comprises a second upper carding cover and a second lower carding roller, the second upper carding cover consists of a certain number of second carding sheets, the second carding sheets are in a cuboid structure, the front end and the rear end of the second carding sheet are respectively connected by a second front toothed belt and a second rear toothed belt, thereby forming a second upper carding cover of an arc-shaped annular structure, a second upper carding wire cloth is arranged on the side surface of the second upper carding plate facing the outer side, the second upper carding wire cloth comprises a carding wire cloth, the distribution density of the carding wire cloth on the second upper carding wire cloth is larger than that of the carding wire cloth on the first upper carding wire cloth, the length of the carding wire cloth is equal to that of the carding wire cloth on the first upper carding wire cloth, 3-6 second upper driving rollers are embedded in the second upper carding plate, second upper driving teeth are respectively distributed on the front side circumference and the rear side circumference of the second upper driving rollers, the second upper driving teeth on the front side circumference are embedded in the second front toothed belt, the second upper driving teeth on the rear side circumference are embedded in the second rear toothed belt, thereby realizing the transmission connection between the second upper driving rollers and the second upper carding plate, the corresponding transmission mechanism drives the second upper driving rollers to rotate so as to drive the second upper carding plate to rotate correspondingly, the second lower carding rollers are in cylindrical hollow structures, the diameter of the second lower carding roller is the same as that of the first lower carding roller, a second lower carding card clothing is arranged on the side circumference of the second lower carding roller, the second lower carding roller is driven to rotate by a corresponding transmission mechanism, a fiber supporting impurity removing device is arranged at the lower parts of the first lower carding roller and the second lower carding roller together, the fiber supporting impurity removing device comprises a front carding plate, a middle impurity removing plate and a rear carding plate, the front carding plate is of an arc solid structure, the front carding card clothing is arranged on the front carding plate, so that static carding and supporting effects on fibers on the corresponding lower carding roller are realized, the rear carding plate is of an arc solid structure, the rear carding card clothing is arranged on the rear carding plate, so that static carding and supporting effects on the fibers on the corresponding lower carding roller are realized, the middle impurity removing plate is of an arc hollow structure, the hollow parts of the middle impurity removing plate are arranged at equal radian intervals, the impurity removing strips are of an arc structure, a certain gap is kept between the impurity removing strips, and the middle impurity removing plates are arranged on the middle impurity removing plate;

when in use, the cotton fiber flow prepared in the step S1 is directly conveyed into a first cotton feeding box of a carding machine through a conveying pipeline, the prepared hollow far infrared polyester fiber flows through the conveying pipeline provided with a cotton distribution tee joint and is distributed into a second cotton feeding box of the carding machine, the cotton fiber flow is output from the bottom after being uniformly tidied under the control of the height in the first cotton feeding box, the output cotton fiber flow is held and fed between an upper feeding roller and a lower supporting and holding plate of a first feeding device, during the holding and feeding process, the cotton fiber flow is tidied and fed under stable pressing force between the upper feeding roller and the rear part of the lower supporting and holding plate, the cotton fiber flow is uniformly flattened under the constant pressing force between the upper feeding roller and the lower supporting and holding plate, so that the cotton fiber flow is conveyed in a horizontal distribution state with relatively consistent thickness, then the front conveying under gradually increased pressing and gradually reduced pressing force between the upper feeding roller and the front part of the lower supporting and holding plate is carried out, so that the thickness of the transported cotton fiber flow is gradually reduced, when one end of the cotton fiber is subjected to the maximum pressing force between the upper feeding roller and the lower supporting plate in the transportation process, the other end starts to receive the striking opening action of the first opening roller, under the rotation of the first opening roller, the acting force generated by the rotation of the opening card clothing driven by the rotation of the first opening roller enables the opening card clothing to gradually extend into the cotton fiber, the striking opening action of the cotton fiber is realized, under the striking action, the longer cotton fiber is held by the opening card clothing due to the fact that the fiber length is larger than the distance between two adjacent card teeth of the opening card clothing, the shorter cotton fiber is sunk between the short card clothing due to the fact that the fiber length is smaller than the distance between two adjacent card teeth of the opening card clothing, the cotton fibers which are beaten and loosened are completely transferred onto the first loosening roller along with continuous feeding, and along with the rotation of the first loosening roller, when the fibers rotate to the part of the first loosening roller, which is abutted against the first lower carding roller of the first carding device, under the combined action of the push-out acting force generated by the opening needle cloth and the inner pulling acting force generated by the first lower carding card clothing of the first lower carding roller, the cotton fibers on the first loosening roller are completely transferred onto the first lower carding card clothing of the first lower carding roller, and the cotton fibers which are sunk into the staple removing card clothing are continuously kept in a sunk state by the clamping action of the card clothing on the fibers, so that the first short-time effect on the cotton fibers is realized, the cotton fibers which are transferred onto the first lower carding roller are driven by the rotation of the first lower carding roller to enter into a carding area between the first lower carding roller and the first upper carding cover, the cotton fibers on the first lower carding roller are thrown onto the first upper carding cover under the combined action of the push-out acting force generated by the first lower carding card clothing, so that the cotton fibers on the first lower carding roller are completely transferred onto the first lower carding card clothing, the cotton fibers on the first lower card clothing are gradually transferred onto the first lower card clothing, and the cotton fibers are gradually and the cotton fibers are continuously transferred into the first short-carding area due to the reciprocating card clothing, and the cotton fibers are continuously in the small-split area between the first lower card clothing, and the first short-down force is gradually and the cotton fibers are continuously kept in a small-down state between the cotton fibers, and the cotton fibers are continuously in a small-down state due to the condition between the cotton fibers is continuously transferred by the cotton fibers and the cotton fibers are continuously in the cotton and down and the cotton and down. The cotton fibers which are sunk between the short-absorbing card clothing are driven to the outer side of the first lower carding roller along with the rotation of the first upper carding cover, and then are removed through the cleaning brush, so that the second short-removing effect on the cotton fibers is realized;

The hollow far infrared polyester fiber flow is output from the bottom after being uniformly tidied under the height control in the second cotton feeding box, the hollow far infrared polyester fiber flow after being output is held and fed between an upper pressing tidying plate and a lower supporting feeding roller of a second feeding device, the feeding speed control of the cotton fiber and the hollow far infrared polyester fiber is realized by arranging the rotating speeds of the upper feeding roller and the lower supporting feeding roller, thus realizing the mixing proportion control of the two fibers, during the holding and feeding process, the hollow far infrared polyester fiber flow is tidied and fed under the stable pressing between the upper pressing tidying plate and the rear part of the lower supporting feeding roller, the hollow far infrared polyester fiber flow is uniformly flattened under the constant pressing force between the upper pressing tidying plate and the lower supporting feeding roller, so that the hollow far infrared polyester fiber flow is conveyed in a horizontal distribution state with relatively consistent thickness, then the front part of the upper pressing tidying plate and the lower supporting feeding roller is pressed gradually, and then conveyed forward under the gradually decreasing pressing, so that the thickness of the conveyed hollow far infrared polyester fiber flow is gradually reduced, the hollow far infrared polyester fibers are gradually and uniformly distributed in a single fiber shape along the width direction, the fluffy hollow far infrared polyester fibers are fed in a downward state under the downward pressing action of the front part of the upper pressing finishing plate along with the reduction of the pressing acting force, when one end of the hollow far infrared polyester fibers is subjected to the maximum pressing force between the upper pressing finishing plate and the lower supporting feeding roller in the conveying process, the other end starts to receive the striking and opening action of the second opening roller, under the rotation of the second opening roller, the second opening roller rotates to drive the opening needle cloth to rotate, the acting force generated by the rotation of the second opening needle cloth enables the opening needle cloth to gradually extend into the space between the hollow far infrared polyester fibers, the hollow far infrared polyester fiber is completely transferred to the second opening roller along with continuous feeding, and the hollow far infrared polyester fiber transferred to the second lower carding roller enters a carding area between the second lower carding roller and the second upper carding cover under the rotation drive of the second lower carding roller along with the rotation of the second opening roller under the combined action of the push-out acting force generated by the opening needle cloth and the inner pulling acting force generated by the second lower carding needle cloth of the second lower carding roller when the fiber rotates to the part of the second opening roller closely abutting the second lower carding roller of the second carding device, in the carding area, the hollow far infrared polyester fibers on the second lower carding roller are thrown to the second upper carding cover under the driving of rotation, so that the hollow far infrared polyester fibers are clamped by the carding clothing in the second upper carding clothing due to longer length, impurities with smaller volume are sunk between the carding clothing due to shorter length, along with the increase of the number of the carding clothing fibers in the carding clothing of the second upper carding clothing, the carding clothing fibers are transferred to the second lower carding clothing of the second lower carding roller again, the reciprocating transfer effect of the hollow far infrared polyester fibers in the carding area is realized, and the hollow far infrared polyester fiber amounts in the second lower carding clothing and the carding clothing in the second upper carding clothing are kept in dynamic balance in the reciprocating transfer, in the reciprocating transfer process, the contact force between the hollow far infrared polyester fibers is gradually reduced, so that the fine carding effect on the hollow far infrared polyester fibers is realized, impurities which sink into the carding card clothing are driven to the outer side of the second lower carding roller back along with the rotation of the second upper carding cover, and then the impurities are removed through the cleaning brush, so that the impurity removal effect on the hollow far infrared polyester fibers is realized;

The cotton fibers which are taken out of the carding area by the first lower carding roller and the hollow far infrared polyester fibers which are taken out of the carding area by the second lower carding roller are then rotated to the contact position with the condensing roller, at the moment, under the internal pulling force of the condensing card cloth on the condensing roller on the fibers, the cotton fibers on the first lower carding card cloth are transferred to the condensing card cloth, the hollow far infrared polyester fibers on the first lower carding card cloth are transferred to the condensing card cloth, and as the diameter of the condensing roller is smaller than that of the first carding roller and the second carding roller, the stripped cotton fibers and the hollow far infrared polyester fibers are condensed into a mixed fiber web on the condensing card cloth, and the cotton fibers are distributed on the left side and the hollow far infrared polyester fibers are distributed on the right side on the mixed fiber web, at this time, the respective condensing rollers sequentially strip cotton fibers on the first lower carding roller and hollow far infrared polyester fibers on the second lower carding roller and condense the cotton fibers which are not stripped by the condensing rollers into corresponding mixed fiber webs, the cotton fibers which are not stripped by the condensing rollers continue to rotate under the drive of the first lower carding roller, the hollow far infrared polyester fibers which are not stripped by the condensing rollers continue to rotate under the drive of the second lower carding roller, when rotating to the lower side of the carding roller, the holding of the front carding plate, the middle impurity removing plate and the rear carding plate continue to rotate along the carding roller, the sequential static carding action of the front carding card cloth on the front carding plate, the middle carding card cloth on the middle impurity removing plate and the rear carding card cloth on the middle impurity removing plate is realized in the holding process, and simultaneously, the falling removal of impurities is realized between two impurity removing strips of the middle impurity removing plate, the mixed fiber webs firstly enter between the middle rolling roller of the upper rolling roller from the rear side of the rolling device, and then the front side enters between the middle upper rolling roller and the middle lower rolling roller, and finally enters between the middle lower rolling roller and the lower rolling roller from the rear side for output, so that the tight pressing combination among the mixed fiber webs is realized in an S-shaped route in the rolling device, the fibers in the mixed fiber webs are mutually permeated under the pressing action, an initial mixed fiber roll with the fibers in mutual tight contact is obtained, and the direct combination and mixing of cotton fibers and hollow far infrared polyester fibers in the width direction of the initial mixed fiber roll are realized.

4. The method of claim 1, wherein the slivering machine in step S3 comprises 1-2 fiber roll draft groups and 1-3 fiber sliver draft groups;

the fiber roll drafting group is positioned at the rear part of the fiber strip drafting group, the fiber roll drafting group comprises a rear fiber roll drafting roller pair positioned at the rear part and a front fiber roll drafting roller pair positioned at the front part, the rear fiber roll drafting roller pair and the front fiber roll drafting roller pair comprise an upper fiber roll drafting roller and a lower fiber roll drafting roller, the upper fiber roll drafting roller and the lower fiber roll drafting roller comprise roller drums which are solid cylindrical structures, upper bulges which are arranged according to a certain sequence are arranged on the side circumference of the roller drum of the upper fiber roll drafting roller, the upper bulges are round or oval, a certain interval is kept between the upper bulges, lower bulges which are arranged according to a certain sequence are arranged on the side circumference of the roller drum of the lower fiber roll drafting roller, the lower bulges are round or oval, the upper fiber roll drafting roller and the lower fiber roll drafting roller are kept at a certain interval, when being pressed, the upper bulge of the roller barrel of the upper fiber roll drafting roller is just embedded in the interval between the lower bulges of the roller barrel of the lower fiber roll drafting roller, and simultaneously, the lower bulge of the roller barrel of the lower fiber roll drafting roller is just embedded in the interval between the upper bulges of the roller barrel of the upper fiber roll drafting roller, the front part of the fiber roll drafting group is provided with a first gathering port, the first gathering port is in a flat structure, the left side of the first gathering port is in an arc structure protruding rightward, the right side is in an arc structure protruding leftward, so that the caliber gradually decreases from an inlet to an outlet along the length direction of the first gathering port, and the caliber decreasing proportion gradually increases along the length direction of the first gathering port, the ratio of the caliber of the inlet of the first gathering port to the caliber of the outlet of the first gathering port is equal to the ratio of the output line speed of a front fiber roll drafting roller pair to the output line speed of a rear fiber roll drafting roller pair of a fiber roll drafting group at the rear side of the first gathering port, and the left side surface of the first gathering port is of an arc-shaped structure protruding towards the left and the right side surface of the first gathering port is of an arc-shaped structure protruding towards the right;

The fiber strip drafting group comprises a rear fiber strip drafting roller pair positioned at the rear part and a front fiber strip drafting roller pair positioned at the front part, wherein the rear fiber strip drafting roller pair and the front fiber strip drafting roller pair comprise an upper fiber strip drafting roller and a lower fiber strip drafting roller, the upper fiber strip drafting roller comprises a rubber roll shaft made of iron, a rubber roll sleeve made of rubber is sleeved on the rubber roll shaft, the rubber roll sleeve and the rubber roll shaft are connected through a needle bearing, so that the rubber roll sleeve can freely rotate around the rubber roll shaft, the lower fiber strip drafting roller comprises a roller shaft made of iron, the roller shaft is in a solid cylindrical structure, the roller shaft is sleeved with the rubber roll sleeve, the rubber roll sleeve and the rubber roll shaft are integrally and fixedly connected, threads are arranged on the rubber roll sleeve along the length direction, a certain distance is kept between the threads, a second gathering port is arranged at the front part of the fiber strip drafting group, the rear port is a fiber inlet, the rear port of the rear gathering port is in a flat structure, the front port of the rear gathering port is in a cylindrical structure, the front port of the rear gathering port is in a flat structure, the diameter of the rear gathering port is gradually reduced from the cylindrical structure to the front port of the fiber strip drafting port, the front port is gradually reduced from the front port to the front port of the cylindrical structure, the front port is in the diameter of the cylindrical structure, the front port is gradually reduced from the front port to the front port of the cylindrical structure, and the front port is gradually reduced to the front port is in the diameter of the cylindrical structure, and the front port is gradually reduced from the front port is in the diameter of the front port, and the front port is formed to the front port, and is gradually reduced from the front port, and the front port is formed into the front port, and has the front, and the front port is has the front and has a front and the front and has a drawing device;

When in use, the prepared mixed fiber roll is firstly fed into a fiber roll drafting group positioned at the rearmost part of a slivering machine, at the moment, the mixed fiber roll is fed by a rear fiber roll drafting roller pair and then is output by a front fiber roll drafting roller pair, so that the rear part of the mixed fiber roll is tightly held under the mutual embedding action of the interval between the upper bulge of the roller cylinder of the upper fiber roll drafting roller of the rear fiber roll drafting roller pair and the lower bulge of the roller cylinder of the lower fiber roll drafting roller and the interval between the lower bulge of the roller cylinder of the corresponding lower fiber roll drafting roller and the upper bulge of the roller cylinder of the upper fiber roll drafting roller, the front part of the mixed fiber roll is tightly held under the mutual embedding action of the interval between the upper bulge of the roller cylinder of the upper fiber roll drafting roller of the front fiber roll drafting roller pair and the lower bulge of the roller cylinder of the lower fiber roll drafting roller of the upper bulge of the upper fiber roll drafting roller, thereby realizing the stable drafting action of the mixed fiber roll with a certain width under the tight holding, the drafting size is equal to the ratio of the output line speed of the front fiber roll drafting roller pair to the output line speed of the rear fiber roll drafting roller pair, the linear density of the mixed fiber roll is reduced under the drafting action, namely the fiber distribution density of the mixed fiber roll under the condition that the width is kept unchanged is reduced, the mixed fiber roll output after the drafting is then fed into a first gathering port, the mixed fiber roll is gradually gathered along the width direction in the first gathering port, then the fibers in the mixed fiber roll are gathered again along the width direction, then the density of the mixed fiber roll after the drafting is restored to the state before the drafting, the mixed fiber rolls are drawn and gathered step by step through the fiber roll drawing groups, so that the mixed fiber rolls are drawn and gathered through a certain number of fiber roll drawing groups to obtain drawn fiber rolls with unchanged fiber distribution density along the width direction and gradually reduced width, and the drawn fiber rolls subsequently enter the fiber strip drawing groups;

At the moment, the draft fiber roll is fed by a rear fiber strip draft roller pair and then is output by a front fiber strip draft roller pair, so that the rear part of the draft fiber roll is tightly pressed and held between a rubber roller sleeve of an upper fiber strip draft roller of the rear fiber strip draft roller pair and a roller sleeve of a lower fiber strip draft roller, the front part of the draft fiber roll is tightly pressed and held between the rubber roller sleeve of the upper fiber strip draft roller of the front fiber strip draft roller pair and the roller sleeve of the lower fiber strip draft roller, during the holding process, the rubber roller sleeve and the hard iron roller sleeve are tightly pressed, thereby the rubber roller sleeve generates elastic deformation, the stable draft effect of the draft fiber roll with obviously reduced width is realized, the draft size is equal to the ratio of the output line speed of the front fiber strip draft roller pair to the output line speed of the rear fiber strip draft roller pair, the linear density of the drawn fiber roll is reduced under the action of drawing, namely the fiber distribution density of the drawn fiber roll is reduced under the condition that the width of the drawn fiber roll is kept unchanged, the drawn fiber roll output after drawing then enters into a second gathering port, the drawn fiber roll is gradually gathered along the width direction in a rear gathering port of the second gathering port, then the fibers in the drawn fiber roll are gathered again along the width direction, the density of the drawn fiber roll after drawing is restored and increased again, and then the drawn fiber roll continuously enters into a front gathering port of the second gathering port, so that the fibers in the drawn fiber roll are gathered towards the middle along the width direction, the fibers are piled up upwards and downwards along the thickness direction while gathering, the distribution of the fibers in the space direction is realized, and the caliber of the front gathering port is reduced, the thickness direction distribution is more concentrated, the input coiled drawing fiber rolls are gradually converted into columnar mixed fiber strips, the output mixed fiber strips continuously enter the fiber strip drawing group, the mixed fiber strips are fed by the rear fiber strip drawing roller pairs and then output by the front fiber strip drawing roller pairs, the rear part of the drawing fiber rolls are tightly pressed and held between the rubber roller sleeves of the upper fiber strip drawing rollers and the roller sleeves of the lower fiber strip drawing rollers of the rear fiber strip drawing roller pairs, the front part of the drawing fiber rolls are tightly pressed and held between the rubber roller sleeves of the upper fiber strip drawing rollers and the roller sleeves of the lower fiber strip drawing rollers of the front fiber strip drawing roller pairs, the fiber strips are converted into flat shapes again in the pressing process, the linear density of the mixed fiber strips is reduced under the drawing action, the output flat mixed fiber strips after the drawing are then entered into the second gathering mouth, the flat mixed fiber strips are gradually gathered along the width direction in the rear gathering mouth of the second gathering mouth, and then the flat mixed fiber strips enter the second gathering mouth, and the mixed fiber strips of the whole structure is not needed to be changed, and the mixed fiber density of the mixed fiber strips is reduced.

5. The method according to claim 1, wherein the shaping of the tapes during the twisting into yarn in step S4 is as follows:

6 mixed fiber strips are fed together in the whole strip, and 6 mixed fiber strips after feeding are folded, drawn by 6 times and gathered to obtain the mixed fiber cooked strip with improved evenness.

6. The method according to claim 1, wherein the roving in the twisting and yarn forming process in step S4 is specifically:

the mixed fiber sliver is fed with 2 mixed fiber sliver, and the 2 mixed fiber sliver is drawn, twisted and wound to produce mixed roving, and the mixed roving is wound onto the bobbin with four rollers and double rubber ring drawing unit in the drawing process, the drawing multiple is set within 10, the back area is simple roller drawing, the floating fiber is not ideal in controlled state, the drawing multiple is small, the sliver structure entering the main drawing area is good, the roving sliver is improved, and the back area drawing multiple is set between 1.06-1.53.

7. The method according to claim 1, wherein the spun yarn in the twisting and yarn forming process in step S4 is specifically:

The mixed roving is made into health-care yarn with certain strength by spun yarn, 2 mixed rovings are fed together in spun yarn, 2 mixed rovings are sequentially drafted and rolled to obtain the health-care yarn, and are wound on a bobbin, in the drafting process, a back zone provides a basis for front zone drafting, the back zone drafting multiple is set between 1.055 and 1.2, and the front zone drafting adopts the process of small jaw gauge, heavy pressurization and short floating zone length.