CN109629061B - Production method of vortex blended yarn - Google Patents

Abstract

The invention provides a production method of vortex blended yarn, which comprises the steps of grabbing cotton fibers by a disc type plucker according to a mixing proportion, uniformly mixing the cotton fibers by a multi-bin cotton mixer, beating and opening by a single axial flow cotton opener, carding and opening by a scutcher, holding and carding by a carding machine to form cotton strips, grabbing polyester fibers by a disc plucker according to the mixing proportion, beating and opening by a single roller cotton cleaner, uniformly feeding cotton by a vibrating cotton box cotton feeder, opening and coiling by a single beater lapper, holding and carding by the carding machine to form polyester strips, carrying out one-time pre-mixing on the cotton strips and the polyester strips, carrying out strip-rolling and re-forming to form mixed rolls, carrying out deep combing and short fiber carding on the mixed rolls according to the cotton fiber processing technology to obtain mixed combed strips with the main body length consistent with the main body length of the mixed cotton fibers, carrying out two-pass drawing on the mixed combed strips to prepare the mixed cooked strips with excellent strip levelness, and finally feeding the mixed drawn slivers into a vortex spinning frame to obtain the final vortex blended yarn.

Description

Production method of vortex blended yarn

Technical Field

The invention relates to the field of novel yarns, in particular to a production method of vortex blended yarns.

Background

With the development of social economy, the living standard of people is continuously improved, and for textiles for clothes, in addition to the pursuit of wearing comfort, the fashionability and functionality of the textiles for clothes are also paid more and more attention, and the pursuit of unique style and various functions such as antibacterial and antistatic functions are pursued. To meet this demand of consumers, new yarns and fabrics are continuously being developed as an important task in the textile industry. With the development of science and technology, the textile market competition is more and more intense, and each manufacturer continuously develops towards high-grade, good technical content and high added value in order to pursue the maximization of profit.

In this respect, the invention provides a method for producing vortex blended yarn, which comprises the steps of grabbing cotton fibers by a disc type plucker according to a mixing proportion, then evenly mixing the cotton fibers by a multi-bin cotton mixer, beating and opening by a single axial flow cotton opener, carding and opening by a scutcher, holding and carding by a carding machine to form cotton slivers, grabbing polyester fibers by a disc plucker according to a mixing proportion, beating and opening by a single roller cotton cleaner, evenly feeding cotton by a vibrating cotton box cotton feeder, opening and coiling by a single beater lapper, holding and carding by a carding machine to form polyester strips, then pre-mixing the cotton strips and the polyester strips, then carding the strips and the polyester strips together, then rewinding into mixed rolls, then carding the mixed rolls through the combing depth and the short fibers designed according to the cotton fiber processing technology to obtain mixed combed strips with the main body length consistent with the main body length of the mixed cotton fibers, then carrying out two-pass drawing on the mixed combed strips to prepare excellent mixed cooked strips with the strips, and finally feeding the mixed drawn slivers into a vortex spinning frame to obtain the final vortex blended yarn. This patent is through the cotton sliver and the dacron sliver that make through the comb and parallel combing jointly after mixing through one to make main part length and the mixed cotton fiber's main part length keep unanimous mixed sliver, thereby realize the uniformity of the fiber length distribution in the mixed sliver, mixed sliver is directly obtained through vortex spinning after twice drawing again and is mixed the cheese, thereby improves the production efficiency of blended yarn by a wide margin.

Disclosure of Invention

The invention aims to provide a production method of vortex blended yarn, which is characterized in that cotton slivers and polyester slivers prepared by cotton carding are subjected to one-step pre-mixing and then are combed together, so that mixed combed slivers with the main body length consistent with that of mixed cotton fibers are prepared, the fiber length distribution consistency in the mixed slivers is realized, and the mixed combed slivers are subjected to two-step drawing and then are directly subjected to vortex spinning to obtain the mixed cheese, so that the production efficiency of the blended yarn is greatly improved.

In order to achieve the purpose, the technical scheme adopted by the invention is as follows: a vortex blended yarn is formed by combing polyester fibers and cotton fibers together and then directly feeding the combed polyester fibers and the cotton fibers into a vortex spinning frame to process the combed polyester fibers and the cotton fibers, wherein the cotton fibers comprise 10% of beautiful cotton 1720 with the average length of 29.11mm, the moisture regain of 4.53%, the impurity content of 1.9%, the micronaire value of 4, the maturity of 0.85 and the short fiber index of 20.1%, and each disc of a bale plucker adopts 4 bags during cotton blending; 5% of cotton 1703 with average length of 30.15mm, moisture regain of 7.25%, impurity content of 1.8%, micronaire value of 4, maturity of 0.9, short fiber index of 15%, and cotton bale of 2 bags in each disc of the plucker; 5 percent of American cotton 1713 with the average length of 29.11mm, the moisture regain of 4.53 percent, the impurity content of 1.9 percent, the micronaire value of 4, the maturity of 0.8 and the short fiber index of 19.9 percent, and 2 bags are adopted in each disc of a bale plucker during cotton matching; 5% of Australian cotton 1701 with average length of 29.41mm, moisture regain of 5.67%, impurity content of 1.8%, micronaire value of 4.26, maturity of 0.9 and short fiber index of 14.3%, and 2 packs of cotton within each disc of a plucker are adopted during cotton matching; 5 percent of first Xinjiang Nongqishi cotton with the average length of 29.5mm, the moisture regain of 6.44 percent, the impurity content of 1.9 percent, the micronaire value of 4.85, the maturity of 0.91 and the short fiber index of 10.8 percent, wherein 2 bags are adopted in each disc of a bale plucker during cotton matching; 5 percent of second Xinjiang Nongqishi cotton with the average length of 29.5mm, the moisture regain of 5.55 percent, the impurity content of 2 percent, the micronaire value of 4.18, the maturity of 0.86 and the short fiber index of 14.9 percent, wherein each disc of the bale plucker adopts 2 bags when cotton is matched; 5 percent of the third Xinjiang Nongqishi cotton with the average length of 29.45mm, the moisture regain of 6.26 percent, the impurity content of 1.7 percent, the micronaire value of 4.77, the maturity of 0.9 and the short fiber index of 10.7 percent, and 2 bags are adopted in each disc of the bale plucker during cotton matching; 7.5 percent of first western silver cotton with the average length of 29.03mm, the moisture regain of 5.56 percent, the impurity content of 2.6 percent, the micronaire value of 4.13, the maturity of 0.87 and the short fiber index of 14.1 percent, wherein 3 bags are adopted in each disc of a bale plucker during cotton matching; 10 percent of fourth Xinjiang Nongqishi cotton with the average length of 29.34mm, the moisture regain of 6.13 percent, the impurity content of 2.1 percent, the micronaire value of 4.19, the maturity of 0.87 and the short fiber index of 11.6 percent, wherein 4 bags are adopted in each disc of the bale plucker during cotton matching; 7.5 percent of American cotton 1712 cotton with the average length of 29.5mm, the moisture regain of 5.39 percent, the impurity content of 1.8 percent, the micronaire value of 3.99, the maturity of 0.86 and the short fiber index of 20.8 percent, and 3 bags are adopted in each disc of a bale plucker during cotton matching; 5 percent of second western silver cotton with the average length of 29.24mm, the moisture regain of 5.73 percent, the impurity content of 2.8 percent, the micronaire value of 4.36, the maturity of 0.88 and the short fiber index of 11.2 percent, wherein 2 bags are adopted in each disc of the bale plucker during cotton matching; 7.5 percent of the fifth Xinjiang Nongqishi cotton with the average length of 28.97mm, the moisture regain of 6.16 percent, the impurity content of 2.1 percent, the micronaire value of 4.39, the maturity of 0.88 and the short fiber index of 12.9 percent, wherein 3 bags are adopted in each disc of the bale plucker during cotton matching; 7.5 percent of the sixth Xinjiang Nongqishi cotton with the average length of 29.34mm, the moisture regain of 6.05 percent, the impurity content of 1.6 percent, the micronaire value of 4.23, the maturity of 0.87 and the short fiber index of 14.4 percent, wherein 3 bags are adopted in each disc of the bale plucker during cotton matching; 7.5 percent of third west silver cotton with the average length of 28.97mm, the moisture regain of 5.85 percent, the impurity content of 2.9 percent, the micronaire value of 4.18, the maturity of 0.87 and the short fiber index of 12 percent, wherein 3 bags are adopted in each disc of the bale plucker during cotton matching; 7.5 percent of American cotton 1715 with the average length of 29.66mm, the moisture regain of 5.98 percent, the impurity content of 1.8 percent, the micronaire value of 4.35, the maturity of 0.9 and the short fiber index of 17.7 percent, and 3 bags are adopted in each disc of a bale plucker during cotton matching; the polyester fiber comprises 11.75% of first characterization polyester with the breaking strength of 5.97cN/dtex, the elongation at break of 26.9%, the fineness of 1.12dtex, the average length of 31.4mm, the super-length rate of 0.2, the length content of 0.2mg/100g, the machine-beating defects of 0.1mg/100g, the breaking strength of CV 9.6% and the moisture regain of 0.46%, and 1 bag is adopted in each disc of a cotton plucker during cotton preparation; 88.25 percent of second appearance polyester with the breaking strength of 5.62cN/dtex, the elongation at break of 19.1 percent, the fineness of 1.13dtex, the average length of 30.8mm, the overlength rate of 0.2, the length content of 0.3mg/100g, the machine-beaten defects of 0mg/100g, the breaking strength CV of 10.6 percent and the moisture regain of 0.54 percent, and each disc of a bale plucker adopts 7 bags when cotton is matched; grabbing cotton fibers by a disc type plucker according to a mixing proportion, then evenly mixing the cotton fibers by a multi-bin cotton mixer, beating and opening by a single axial flow cotton opener, carding and opening by a scutcher, holding and carding by a carding machine to form cotton strips, grabbing the polyester fibers by the disc plucker according to the mixing proportion, beating and opening by a single roller cotton cleaner, evenly feeding the cotton by a vibrating cotton box cotton feeder, opening and coiling by a single beater, holding and carding by the carding machine to form the polyester strips, then, the cotton sliver and the polyester strip are pre-mixed together and then are re-rolled into a mixed roll through strip rolling, then the mixed roll is combed according to the combing depth designed by the cotton fiber processing technology to remove short fibers, and a mixed combed strip with the main body length consistent with that of the mixed cotton fiber is obtained, and then the mixed combed slivers are subjected to two-pass drawing to prepare mixed drawn slivers with excellent evenness, and finally the mixed drawn slivers are fed into a vortex spinning frame to prepare the final vortex blended yarns.

In order to realize the production of the vortex blended yarn, the invention adopts the following production method, comprising the following steps:

firstly, the cotton bales which are selected and matched are arranged in the disks of the full-automatic disk type plucker in sequence, wherein the cotton bales in each disk of the disk type plucker are arranged in the sequence of 4 bales of American cotton 1720, 2 bales of Australian cotton 1703, 2 bales of American cotton 1713, 2 bales of Australian cotton 1701, 2 bales of first Xinjiang seven teacher, 2 bales of second Xinjiang seven teacher, 2 bales of third Xinjiang seven teacher, 3 bales of first Western silver force, 4 bales of fourth Xinjiang seven teacher, 3 bales of American cotton 1712, 2 bales of second Western silver force, 3 bales of fifth Xinjiang seven teacher, 3 bales of sixth Xinjiang seven teacher, 3 bales of third Western silver force and 3 bales of American cotton 1715, a cotton grabbing hand on the disk type plucker grabs the cotton fibers in the cotton bales which are arranged in the disks by the rotation of a cotton stripping blade, and rotates along the circumferential direction of the disks, so that the cotton grabbing hand on the cotton fibers in the cotton bales are grabbed and matched in the proportion of each cotton bale, meanwhile, the cotton grabbing beater moves downwards along the thickness direction of the cotton bale, so that the cotton fibers in the cotton bales are grabbed in sequence, the grabbing cotton quantity of each tooth of a blade of the cotton grabbing beater of the disc type cotton grabbing machine is ensured to be mastered slightly according to the principle of fine grabbing cotton, and the descending distance of the cotton grabbing beater is mastered slightly at each time; the cotton fibers grabbed according to the proportion firstly enter a multi-bin cotton mixing machine, the fed cotton fibers are highly mixed, loosened and purified in the multi-bin cotton mixing machine, 3-6 high cotton boxes are arranged in the multi-bin cotton mixing machine, a negative pressure air suction fan is arranged in the multi-bin cotton mixing machine, the cotton fibers are uniformly blown into each high cotton box under the suction action of negative pressure air flow in the negative pressure air suction fan after being fed into the multi-bin cotton mixing machine to form instant mixing, the cotton fibers in each cotton box are continuously conveyed under the rotation of an angle spindle curtain, the secondary mixing is obtained by utilizing the path difference transmitted to a junction point in the conveying process, meanwhile, the angle spindle curtain realizes the loosening action of the cotton fibers in a free state in the conveying process of the cotton fibers, and the blocky impurities in the cotton fibers are separated and removed in the loosening process and the vibration process of the angle spindle curtain to the cotton fibers, in addition, excessive cotton fibers are thrown into the cotton mixing chamber to achieve fine mixing; cotton fibers mixed and output by a multi-bin cotton mixer are continuously fed into a single axial flow opener under the suction action of negative pressure through a conveying pipeline, a brad beater is arranged in the single axial flow opener, the rotation of the brad beater realizes multiple times of uniform, dense and soft beating on the cotton fibers in a free state, so that the cotton fibers are fully opened and loosened, impurities are separated from the fibers, particularly, more large impurities are removed, so that the effect of early falling and less breaking is achieved, dust bars are arranged on the outer circumference of the brad beater, and the broken impurities fall along gaps among the dust bars under the action of gravity, so that the impurities are removed; cotton fibers which are output by opening of a single axial flow cotton opener are continuously fed into the cotton cleaner under the suction effect of negative pressure through a conveying pipeline, so that the cotton is further opened and cleaned, three cotton cleaning rollers are arranged in the cotton cleaner, and are sequentially provided with coarse needles, coarse saw teeth and fine saw teeth, so that the cotton fibers which are subjected to primary opening only and have lower opening degree are effectively opened, a carding plate, a dust removing knife and a continuous suction opening are arranged at each roller, an adjusting plate is arranged at the dust removing knife, the size of an opening for cleaning can be adjusted according to different requirements of spun raw materials and process cleaning, so that respective noil amount and noil content of noil are controlled, the weight of the noil is reduced by 67 percent, the weight dispersion of the noil is reduced by 75 percent, the cleaning efficiency is over 45 percent through the hitting and cleaning effects of the three rollers, and dust and short fibers are effectively cleaned in the cotton cleaning stage, the burden of the carding machine is reduced, a condition for realizing high yield of the carding machine is created, the cotton cleaning roller adopts alternating current variable frequency control, the rotating speed can be regulated in a wireless and stepless manner, and the opening requirements of different raw cotton are met; the cotton fiber after opening and impurity removal is conveyed to a carding machine through a pipeline, a cotton box is arranged at the front part of the carding machine, the negative pressure of the cotton box is set to be 40-80Pa, a cotton layer is kept between 25% -40% of the height of the cotton box, so that the fed cotton fiber is continuously fed into the carding machine after being output as a cotton layer with uniform quality and thickness, and uniform cotton feeding to the carding machine is realized The method comprises the following steps that (1) the air flow is separated to remove impurities, cotton fibers on a cylinder in a cylinder cover plate carding device are stripped by a doffer in a coiler output device, so that the cotton fibers enter the coiler output device, the coiler output device uniformly presses the cotton fibers entering the coiler output device into a coiler, the coiler is wound, and then cotton slivers are obtained and wound on a sliver can;

secondly, arranging the selected polyester bags in a disc of a full-automatic disc type plucker in sequence, wherein the arrangement sequence of the terylene bags in each disc of the disc type plucker is 3 bags of second dacron, 1 bag of first dacron and 4 bags of second dacron, a plucking beater on the disc type plucker rotates through a cotton stripping blade to grab the dacron cotton fibers in the dacron bags in the discs, and simultaneously the plucking beater rotates along the circumferential direction of the discs, thereby realizing the grabbing of the polyester fibers in the polyester bags according to the mixing proportion, and simultaneously, the cotton grabbing beater moves downwards along the thickness direction of the polyester bags, thereby realizing the orderly grabbing of the polyester fibers in the polyester bags, according to the principle of fine cotton grabbing, the small grabbing amount of each tooth of a blade of a cotton grabbing beater of the disc type cotton grabbing machine is guaranteed to be mastered, and the small descending distance of the cotton grabbing beater each time is mastered; the terylene fibers grabbed according to the proportion are firstly sent into a scutching machine so as to carry out opening and impurity removal on the terylene, a coarse needle scutching roller is arranged in the scutching machine, carding plates, dust knives and continuous suction ports are arranged at the positions of the coarse needle scutching rollers, an adjusting plate is arranged at the position of the dust knives, the size of an impurity removal opening can be adjusted according to different raw materials to be spun and process impurity removal requirements so as to control the cotton falling amount and the impurity content of the cotton falling, the coarse needle scutching roller adopts alternating current variable frequency control, the rotating speed can be linearly and steplessly adjusted, and the respective opening requirements of different raw cotton are met; the polyester fibers output by the scutcher are continuously conveyed to a vibration cotton feeder through a conveying pipeline, a vibration plate is arranged in the vibration cotton feeder, vibration opening in the process of downward continuous conveying of the polyester fibers is realized through vibration of the vibration plate at a certain frequency, meanwhile, further mixing of the polyester fibers is realized in the vibration process, and finally, the polyester fibers are processed to obtain uniform sheet cotton and are prepared for uniform coiling; the polyester sheet cotton output by the vibration cotton feeder is continuously conveyed into a single beater scutcher through a conveying pipeline, the single beater scutcher further loosens and removes impurities from the fed polyester fiber, and the polyester fiber is made into a polyester roll for the carding machine to use, a cotton conveying roller, a balance roller, a comprehensive beater and a cotton roll roller are arranged in the single beater scutcher, the polyester fiber fed by the cotton conveying roller is input with uniform quality under the control of the balance roller, then the polyester fiber is beaten and loosened in a free state under the action of the comprehensive beater, and the fiber is pressed into a roll-shaped structure with uniform quality under the pressing action of the cotton roll roller to output the polyester roll; the polyester rolls are conveyed and sent into a carding machine, the carding machine comprises a roller licker-in feeding device, a cylinder cover plate carding device and a coiling output device, the roller licker-in feeding device uniformly presses and feeds cotton, holds, opens, combs and separates and removes impurities from the fed polyester rolls, then the polyester fibers on the licker-in of the roller licker-in feeding device are stripped by a cylinder in the cylinder cover plate carding device, so that the polyester fibers enter the cylinder cover plate carding device, the cylinder cover plate carding device freely opens, combs and separates and removes impurities from the polyester fibers entering the cylinder cover plate carding device, and then doffers in the coiling output device strip the polyester fibers on the cylinder in the cylinder cover plate carding device, so that the polyester fibers enter the coiling output device, and the coiling output device uniformly presses the coiling output device to the polyester fibers entering the cylinder cover plate carding device, Winding and outputting the coil to obtain the polyester sliver, and winding the polyester sliver on a sliver can;

thirdly, mixing the cotton slivers obtained in the first step and the polyester slivers obtained in the second step through a pre-drawing process to obtain polyester/cotton mixed slivers, wherein the pre-drawing adopts a cotton drawing frame, the drawing frame adopts 4-8 cotton slivers and polyester slivers to be fed together, the difference between the drawing multiple of the drawing frame and the number of the fed slivers is set within 8 percent, the number of the fed cotton slivers and the polyester slivers is determined by the blending ratio of the cotton fibers and the polyester fibers in the finally spun vortex blended yarns, mutual sliding action is generated between the fibers in the fed cotton slivers and the polyester slivers under the action of the drawing force of a drawing system of the drawing frame, so that the fed cotton slivers and the polyester slivers are drawn and thinned, the cotton slivers and the polyester slivers drawn and thinned by the drawing system are combined in parallel, and in the combining process, the mixing of the cotton fibers and the cotton fibers in a parallel state is realized on one hand, on the other hand, the nubs and the details between the cotton slivers and the terylene slivers are combined in a random state, so that the evenness of the prepared terylene/cotton mixed sliver is improved;

fourthly, directly feeding the polyester/cotton mixed strips prepared in the third step into a strip lap machine, feeding 22-26 polyester/cotton mixed strips, and setting the drafting multiple of the strip lap machine to be 1.05-1.4, so that the polyester/cotton mixed strips with strip structures are made into polyester/cotton mixed rolls with roll structures again under the action of small drafting, and the preparation work before combing is realized; then feeding the polyester/cotton mixed combed roll into a combing machine to prepare polyester/cotton mixed combed strips with strip structures again, deeply and finely combing the polyester/cotton mixed roll by the combing machine, setting the process of the combing machine according to the combing processing process of cotton fibers, feeding 6-8 polyester/cotton mixed rolls in the combing processing, setting the draft multiple of the combing machine between 105 and 115, drawing and thinning the fed polyester/cotton mixed roll with the roll structure into strip polyester/cotton mixed combed strips under the action of large draft, removing short fibers below 15mm in the polyester/cotton mixed roll in the combing process, keeping the length of the fibers in the prepared polyester/cotton mixed combed strips consistent with the main length of the mixed cotton fibers, and simultaneously removing neps, impurities and fiber defects in the mixed roll, the straightening parallelism and the neatness of the fiber are improved;

fifthly, the polyester/cotton mixed combed sliver prepared in the fourth step is processed by two drawing processes to prepare polyester/cotton mixed drawn sliver with good evenness and strip-shaped structure, the drawing process adopts a cotton drawing machine, the first drawing process adopts 6-8 polyester/cotton mixed combed slivers to be jointly fed to prepare a first polyester/cotton mixed sliver, the difference between the drawing multiple of the first drawing and the number of fed slivers is set within 5 percent, under the action of the drawing force of a first drawing system, mutual sliding action occurs between fibers in the fed polyester/cotton mixed combed slivers, so that the fed polyester/cotton mixed combed slivers are drawn and thinned, the polyester/cotton mixed combed slivers drawn and thinned by the drawing system are parallelly combined, and in the combining process, the thick knots among the polyester/cotton mixed combed slivers are formed, The details are combined in a random state, so that the evenness of the prepared first polyester/cotton mixed strip is improved; in the second drawing, 4-6 first polyester/cotton mixed slivers are fed together to prepare polyester/cotton mixed drawn slivers, the difference between the draft multiple of the second drawing and the number of the fed slivers is set to be within 8%, fibers in the fed first polyester/cotton mixed slivers are subjected to mutual sliding action under the action of the draft force of a second drawing system, so that the fed first polyester/cotton mixed slivers are stretched and thinned, the first polyester/cotton mixed slivers stretched and thinned by the draft system are subjected to parallel combination, and in the combination process, the thick knots and the thin knots among the first polyester/cotton mixed slivers are combined in a random state, so that the evenness of the prepared polyester/cotton mixed drawn slivers is improved;

sixthly, directly feeding the polyester/cotton mixed sliver obtained in the fifth step into a vortex spinning frame to obtain vortex blended yarn with a cylindrical cross section, wherein the vortex spinning frame comprises a drafting system and a false twisting system, the drafting system adopts a four-roller three-zone drafting mode, the drafting multiple of the drafting system is the ratio of the ration of the fed polyester/cotton mixed sliver to the ration of the vortex blended yarn, the drafting multiple of the drafting system is more than 180 times, the fed polyester/cotton mixed sliver is stretched and thinned under the large drafting action of the drafting system of the vortex spinning frame to obtain polyester/cotton mixed sliver, the polyester/cotton mixed sliver drafted by the drafting system is output from a front roller jaw and enters the false twisting system, the false twisting system comprises a nozzle, and the polyester/cotton mixed sliver enters the nozzle along a spiral fiber guide channel under the action of axial airflow at the inlet of the nozzle, the outlet of the spiral fiber guide channel is provided with a needle-shaped twisting-resistant piece, so that the polyester/cotton mixed fiber is introduced into the vortex chamber in a state of no twist, at the moment, the front end of the polyester/cotton mixed fiber is drawn into a yarn channel in a spindle under the dragging action of the formed yarn and is twisted into newly formed vortex blended yarn to form a yarn core, the tail end of the fiber is still kept in the fiber guide channel under the condition of being held by a front roller jaw, when the tail end of the fiber is not held by the front roller jaw any more, the tail end of the fiber is not kept in the fiber guide channel under the centrifugal action of the air vortex in the nozzle and is radially dispersed at the spindle inlet, and the tail end of the fiber is lodged on the conical surface of the front end of the spindle under the driving of the air vortex, rotates along with the air vortex, is wound in the subsequent vortex blended yarn and is output through the yarn channel in the spindle, so that the formed vortex blended yarn is composed of a yarn core formed by approximately parallel untwisted fibers and fibers wrapped in a spiral shape at the periphery.

According to the invention, the cotton sliver and the polyester sliver which are prepared by cotton carding are pre-mixed together and combed together, so that the mixed sliver with the main body length consistent with that of the mixed cotton fiber is prepared, the fiber length distribution consistency in the mixed sliver is realized, and the mixed sliver is directly subjected to vortex spinning after two-pass drawing, so that the production efficiency of the blended yarn is greatly improved.

The specific implementation mode is as follows:

to prepare a linear density of 40^SAnd the vortex blended yarn with the blending ratio of T60/JC30 is taken as an example, the corresponding process parameters are as follows:

(1) raw material selection and preparation

Raw cotton blending and performance index of each cotton bale

Polyester blended cotton and performance index of each cotton bale

(2) The process flow is designed as follows

Cotton wool matching → FA009 reciprocating plucker → FA029 multi-chamber cotton mixer → FA105A single axial flow opener → FA116 cotton cleaner → FA203A cotton carding machine

Terylene matching → FA002A plucker → FA111 single roller scutcher → FA046 vibrating cotton box feeder → FA141A single beater lap-former → A186F high speed cotton carding machine

Polyester-cotton blend → FA306A drawing frame → JSF 360 drawing frame → JSF 288 comber → FA306A drawing frame (head and two in one) → vortex spinning (870)

(3) Designing cotton according to key process parameters:

technological parameters of bale plucker

Process parameters	Design of the process
		Horizontal running speed m/min	18
Cotton-grasping beater and rib spacing (mm)	-3
		Speed of cotton grab beater (r/min)	900
The cotton grabbing arm descends by a distance of mm each time	1.2

Technological parameters of multi-bin cotton mixer

Process parameters	Design of the process
		Angular nail curtain speed	35HZ
Speed of the conveyor belt	8HZ
		Rotational speed of cotton roller (r/min)	300
Cotton stripping roller speed (r/min)	350

Technological parameters of single axial flow cotton opener

Technological parameters of scutcher

Design of the process	Process parameters
		Speed of up-down cotton feeding roller (r/min)	Frequency conversion
Opening roller speed (r/min)	380
		Combing roller speed (r/min)	Frequency conversion
Accelerated roller-dust removal knife mm	0.8
		Acceleration roller-cotton pressing rod mm	3
Acceleration roller-carding roller mm	0.6
		Carding roller, one, two, three dust removing knives mm	0.7*0.7*0.8
Combing roller and combing plate inlet and outlet	2.5*4.0
		Entrance and exit of combing roller and two combing plates	1.5*4.0

Cotton carding process design table

Polyester:

technological parameters of bale plucker

Process parameters	Design of parameters
		Rotating speed (r/min)	720
Distance of blade extending rib (mm)	2.5
		Intermittent drop distance of beater (m/times)	3

Technological parameters of single-roller scutcher

Process parameters	Design of parameters
		Surface velocity HZ	20
Beater speed r/min	1236

Technological parameters of vibrating hopper cotton feeder

Technological parameters of single beater scutcher

Cotton carding process design table

Polyester-cotton blend

Design of pre-drawing process

Strip and roll process design

Combing process design

Drawing process design

Vortex spinning process design

(4) Resultant yarn quality test

Twist degree

Strip for strip

CV％	14.95
		CVb	1.5
Details (-40%)	600
		Details (-50%)	52
(+ 35%) nub	582
		(+ 50%) nub	56
(+ 140%) neps	368
		(+ 200%) neps	23

Single yarn strength

cN	247.3
		cvb	9.9
Elong	8.0
		CN/T	17.2
max	304
		min	177.2

Claims (1)

1. A production method of vortex blended yarn, the vortex blended yarn is made by combing polyester fiber and cotton fiber together, then feeding the combed cotton fiber into a vortex spinning frame, wherein the cotton fiber comprises 10% of beautiful cotton 1720 with average length of 29.11mm, moisture regain of 4.53%, impurity content of 1.9%, micronaired value of 4, maturity of 0.85 and short fiber index of 20.1%, and each disc; 5% of cotton 1703 with average length of 30.15mm, moisture regain of 7.25%, impurity content of 1.8%, micronaire value of 4, maturity of 0.9, short fiber index of 15%, and cotton bale of 2 bags in each disc of the plucker; 5 percent of American cotton 1713 with the average length of 29.11mm, the moisture regain of 4.53 percent, the impurity content of 1.9 percent, the micronaire value of 4, the maturity of 0.8 and the short fiber index of 19.9 percent, and 2 bags are adopted in each disc of a bale plucker during cotton matching; 5% of Australian cotton 1701 with average length of 29.41mm, moisture regain of 5.67%, impurity content of 1.8%, micronaire value of 4.26, maturity of 0.9 and short fiber index of 14.3%, and 2 packs of cotton within each disc of a plucker are adopted during cotton matching; 5 percent of first Xinjiang Nongqishi cotton with the average length of 29.5mm, the moisture regain of 6.44 percent, the impurity content of 1.9 percent, the micronaire value of 4.85, the maturity of 0.91 and the short fiber index of 10.8 percent, wherein 2 bags are adopted in each disc of a bale plucker during cotton matching; 5 percent of second Xinjiang Nongqishi cotton with the average length of 29.5mm, the moisture regain of 5.55 percent, the impurity content of 2 percent, the micronaire value of 4.18, the maturity of 0.86 and the short fiber index of 14.9 percent, wherein each disc of the bale plucker adopts 2 bags when cotton is matched; 5 percent of the third Xinjiang Nongqishi cotton with the average length of 29.45mm, the moisture regain of 6.26 percent, the impurity content of 1.7 percent, the micronaire value of 4.77, the maturity of 0.9 and the short fiber index of 10.7 percent, and 2 bags are adopted in each disc of the bale plucker during cotton matching; 7.5 percent of first western silver cotton with the average length of 29.03mm, the moisture regain of 5.56 percent, the impurity content of 2.6 percent, the micronaire value of 4.13, the maturity of 0.87 and the short fiber index of 14.1 percent, wherein 3 bags are adopted in each disc of a bale plucker during cotton matching; 10 percent of fourth Xinjiang Nongqishi cotton with the average length of 29.34mm, the moisture regain of 6.13 percent, the impurity content of 2.1 percent, the micronaire value of 4.19, the maturity of 0.87 and the short fiber index of 11.6 percent, wherein 4 bags are adopted in each disc of the bale plucker during cotton matching; 7.5 percent of American cotton 1712 cotton with the average length of 29.5mm, the moisture regain of 5.39 percent, the impurity content of 1.8 percent, the micronaire value of 3.99, the maturity of 0.86 and the short fiber index of 20.8 percent, and 3 bags are adopted in each disc of a bale plucker during cotton matching; 5 percent of second western silver cotton with the average length of 29.24mm, the moisture regain of 5.73 percent, the impurity content of 2.8 percent, the micronaire value of 4.36, the maturity of 0.88 and the short fiber index of 11.2 percent, wherein 2 bags are adopted in each disc of the bale plucker during cotton matching; 7.5 percent of the fifth Xinjiang Nongqishi cotton with the average length of 28.97mm, the moisture regain of 6.16 percent, the impurity content of 2.1 percent, the micronaire value of 4.39, the maturity of 0.88 and the short fiber index of 12.9 percent, wherein 3 bags are adopted in each disc of the bale plucker during cotton matching; 7.5 percent of the sixth Xinjiang Nongqishi cotton with the average length of 29.34mm, the moisture regain of 6.05 percent, the impurity content of 1.6 percent, the micronaire value of 4.23, the maturity of 0.87 and the short fiber index of 14.4 percent, wherein 3 bags are adopted in each disc of the bale plucker during cotton matching; 7.5 percent of third west silver cotton with the average length of 28.97mm, the moisture regain of 5.85 percent, the impurity content of 2.9 percent, the micronaire value of 4.18, the maturity of 0.87 and the short fiber index of 12 percent, wherein 3 bags are adopted in each disc of the bale plucker during cotton matching; 7.5 percent of American cotton 1715 with the average length of 29.66mm, the moisture regain of 5.98 percent, the impurity content of 1.8 percent, the micronaire value of 4.35, the maturity of 0.9 and the short fiber index of 17.7 percent, and 3 bags are adopted in each disc of a bale plucker during cotton matching; the polyester fiber comprises 11.75% of first characterization polyester with the breaking strength of 5.97cN/dtex, the elongation at break of 26.9%, the fineness of 1.12dtex, the average length of 31.4mm, the super-length rate of 0.2, the length content of 0.2mg/100g, the machine-beating defects of 0.1mg/100g, the breaking strength of CV 9.6% and the moisture regain of 0.46%, and 1 bag is adopted in each disc of a cotton plucker during cotton preparation; 88.25 percent of second appearance polyester with the breaking strength of 5.62cN/dtex, the elongation at break of 19.1 percent, the fineness of 1.13dtex, the average length of 30.8mm, the overlength rate of 0.2, the length content of 0.3mg/100g, the machine-beaten defects of 0mg/100g, the breaking strength CV of 10.6 percent and the moisture regain of 0.54 percent, and each disc of a bale plucker adopts 7 bags when cotton is matched; the method is characterized in that: grabbing cotton fibers by a disc type plucker according to a mixing proportion, then uniformly mixing the cotton fibers by a multi-bin cotton mixer, striking and opening by a single axial flow cotton opener, carding and opening by a scutcher, grabbing the polyester fibers by a carding machine according to the mixing proportion to form cotton slivers, sequentially striking and opening by a single roller cotton cleaner, uniformly feeding the cotton by a vibration cotton box cotton feeder, opening and coiling by a single beater scutcher, gripping and carding by a carding machine to form polyester slivers, then pre-mixing the cotton slivers and the polyester slivers once, then doubling the slivers and coiling to form a mixed coil, then carding the mixed coil through combing depth according to a cotton fiber processing technology to obtain mixed combed slivers with the main body length consistent with that of the mixed cotton fibers, then making the mixed combed slivers into excellent mixed drawn slivers through two-pass doubling, and finally feeding the mixed slivers into a vortex spinning frame to obtain final vortex spun yarns, comprises the following production steps:

firstly, the cotton bales which are selected and matched are arranged in the disks of the full-automatic disk type plucker in sequence, wherein the cotton bales in each disk of the disk type plucker are arranged in the sequence of 4 bales of American cotton 1720, 2 bales of Australian cotton 1703, 2 bales of American cotton 1713, 2 bales of Australian cotton 1701, 2 bales of first Xinjiang seven teacher, 2 bales of second Xinjiang seven teacher, 2 bales of third Xinjiang seven teacher, 3 bales of first Western silver force, 4 bales of fourth Xinjiang seven teacher, 3 bales of American cotton 1712, 2 bales of second Western silver force, 3 bales of fifth Xinjiang seven teacher, 3 bales of sixth Xinjiang seven teacher, 3 bales of third Western silver force and 3 bales of American cotton 1715, a cotton grabbing hand on the disk type plucker grabs the cotton fibers in the cotton bales which are arranged in the disks by the rotation of a cotton stripping blade, and rotates along the circumferential direction of the disks, so that the cotton grabbing hand on the cotton fibers in the cotton bales are grabbed and matched in the proportion of each cotton bale, meanwhile, the cotton grabbing beater moves downwards along the thickness direction of the cotton bale, so that the cotton fibers in the cotton bales are grabbed in sequence, the grabbing cotton quantity of each tooth of a blade of the cotton grabbing beater of the disc type cotton grabbing machine is ensured to be mastered slightly according to the principle of fine grabbing cotton, and the descending distance of the cotton grabbing beater is mastered slightly at each time; the cotton fibers grabbed according to the proportion firstly enter a multi-bin cotton mixing machine, the fed cotton fibers are highly mixed, loosened and purified in the multi-bin cotton mixing machine, 3-6 high cotton boxes are arranged in the multi-bin cotton mixing machine, a negative pressure air suction fan is arranged in the multi-bin cotton mixing machine, the cotton fibers are uniformly blown into each high cotton box under the suction action of negative pressure air flow in the negative pressure air suction fan after being fed into the multi-bin cotton mixing machine to form instant mixing, the cotton fibers in each cotton box are continuously conveyed under the rotation of an angle spindle curtain, the secondary mixing is obtained by utilizing the path difference transmitted to a junction point in the conveying process, meanwhile, the angle spindle curtain realizes the loosening action of the cotton fibers in a free state in the conveying process of the cotton fibers, and the blocky impurities in the cotton fibers are separated and removed in the loosening process and the vibration process of the angle spindle curtain to the cotton fibers, in addition, excessive cotton fibers are thrown into the cotton mixing chamber to achieve fine mixing; cotton fibers mixed and output by a multi-bin cotton mixer are continuously fed into a single axial flow opener under the suction action of negative pressure through a conveying pipeline, a brad beater is arranged in the single axial flow opener, the rotation of the brad beater realizes multiple times of uniform, dense and soft beating on the cotton fibers in a free state, so that the cotton fibers are fully opened and loosened, impurities are separated from the fibers, particularly, more large impurities are removed, so that the effect of early falling and less breaking is achieved, dust bars are arranged on the outer circumference of the brad beater, and the broken impurities fall along gaps among the dust bars under the action of gravity, so that the impurities are removed; cotton fibers which are output by opening of a single axial flow cotton opener are continuously fed into the cotton cleaner under the suction effect of negative pressure through a conveying pipeline, so that the cotton is further opened and cleaned, three cotton cleaning rollers are arranged in the cotton cleaner, and are sequentially provided with coarse needles, coarse saw teeth and fine saw teeth, so that the cotton fibers which are subjected to primary opening only and have lower opening degree are effectively opened, a carding plate, a dust removing knife and a continuous suction opening are arranged at each roller, an adjusting plate is arranged at the dust removing knife, the size of an opening for cleaning can be adjusted according to different requirements of spun raw materials and process cleaning, so that respective noil amount and noil content of noil are controlled, the weight of the noil is reduced by 67 percent, the weight dispersion of the noil is reduced by 75 percent, the cleaning efficiency is over 45 percent through the hitting and cleaning effects of the three rollers, and dust and short fibers are effectively cleaned in the cotton cleaning stage, the burden of the carding machine is reduced, conditions are created for realizing high yield of the carding machine, the cotton cleaning roller adopts alternating current variable frequency control, the rotating speed can be adjusted in a stepless manner, and the opening requirements of different raw cotton are met; the cotton fiber after opening and impurity removal is conveyed to a carding machine through a pipeline, a cotton box is arranged at the front part of the carding machine, the negative pressure of the cotton box is set to be 40-80Pa, a cotton layer is kept between 25% -40% of the height of the cotton box, so that the fed cotton fiber is continuously fed into the carding machine after being output as a cotton layer with uniform quality and thickness, and uniform cotton feeding to the carding machine is realized The method comprises the following steps that (1) the air flow is separated to remove impurities, cotton fibers on a cylinder in a cylinder cover plate carding device are stripped by a doffer in a coiler output device, so that the cotton fibers enter the coiler output device, the coiler output device uniformly presses the cotton fibers entering the coiler output device into a coiler, the coiler is wound, and then cotton slivers are obtained and wound on a sliver can;

secondly, arranging the selected polyester bags in a disc of a full-automatic disc type plucker in sequence, wherein the arrangement sequence of the terylene bags in each disc of the disc type plucker is 3 bags of second dacron, 1 bag of first dacron and 4 bags of second dacron, a plucking beater on the disc type plucker rotates through a cotton stripping blade to grab the dacron cotton fibers in the dacron bags in the discs, and simultaneously the plucking beater rotates along the circumferential direction of the discs, thereby realizing the grabbing of the polyester fibers in the polyester bags according to the mixing proportion, and simultaneously, the cotton grabbing beater moves downwards along the thickness direction of the polyester bags, thereby realizing the orderly grabbing of the polyester fibers in the polyester bags, according to the principle of fine cotton grabbing, the small grabbing amount of each tooth of a blade of a cotton grabbing beater of the disc type cotton grabbing machine is guaranteed to be mastered, and the small descending distance of the cotton grabbing beater each time is mastered; the terylene fibers grabbed according to the proportion are firstly sent into a scutching machine so as to carry out opening and impurity removal on the terylene, a coarse needle scutching roller is arranged in the scutching machine, carding plates, dust knives and continuous suction ports are arranged at the positions of the coarse needle scutching rollers, an adjusting plate is arranged at the position of the dust knives, the size of an impurity removal opening can be adjusted according to different raw materials to be spun and process impurity removal requirements so as to control the cotton falling amount and the impurity content of the cotton falling, the coarse needle scutching roller adopts alternating current variable frequency control, the rotating speed can be adjusted in a stepless manner, and the respective opening requirements of different raw cotton are met; the polyester fibers output by the scutcher are continuously conveyed to a vibration cotton feeder through a conveying pipeline, a vibration plate is arranged in the vibration cotton feeder, vibration opening in the process of downward continuous conveying of the polyester fibers is realized through vibration of the vibration plate at a certain frequency, meanwhile, further mixing of the polyester fibers is realized in the vibration process, and finally, the polyester fibers are processed to obtain uniform sheet cotton and are prepared for uniform coiling; the polyester sheet cotton output by the vibration cotton feeder is continuously conveyed into a single beater scutcher through a conveying pipeline, the single beater scutcher further loosens and removes impurities from the fed polyester fiber, and the polyester fiber is made into a polyester roll for the carding machine to use, a cotton conveying roller, a balance roller, a comprehensive beater and a cotton roll roller are arranged in the single beater scutcher, the polyester fiber fed by the cotton conveying roller is input with uniform quality under the control of the balance roller, then the polyester fiber is beaten and loosened in a free state under the action of the comprehensive beater, and the fiber is pressed into a roll-shaped structure with uniform quality under the pressing action of the cotton roll roller to output the polyester roll; the polyester rolls are conveyed and sent into a carding machine, the carding machine comprises a roller licker-in feeding device, a cylinder cover plate carding device and a coiling output device, the roller licker-in feeding device uniformly presses and feeds cotton, holds, opens, combs and separates and removes impurities from the fed polyester rolls, then the polyester fibers on the licker-in of the roller licker-in feeding device are stripped by a cylinder in the cylinder cover plate carding device, so that the polyester fibers enter the cylinder cover plate carding device, the cylinder cover plate carding device freely opens, combs and separates and removes impurities from the polyester fibers entering the cylinder cover plate carding device, and then doffers in the coiling output device strip the polyester fibers on the cylinder in the cylinder cover plate carding device, so that the polyester fibers enter the coiling output device, and the coiling output device uniformly presses the coiling output device to the polyester fibers entering the cylinder cover plate carding device, Winding and outputting the coil to obtain the polyester sliver, and winding the polyester sliver on a sliver can;

thirdly, mixing the cotton slivers obtained in the first step and the polyester slivers obtained in the second step through a pre-drawing process to obtain polyester/cotton mixed slivers, wherein the pre-drawing adopts a cotton drawing frame, the drawing frame adopts 4-8 cotton slivers and polyester slivers to be fed together, the difference between the drawing multiple of the drawing frame and the number of the fed slivers is set within 8 percent, the number of the fed cotton slivers and the polyester slivers is determined by the blending ratio of the cotton fibers and the polyester fibers in the finally spun vortex blended yarns, mutual sliding action is generated between the fibers in the fed cotton slivers and the polyester slivers under the action of the drawing force of a drawing system of the drawing frame, so that the fed cotton slivers and the polyester slivers are drawn and thinned, the cotton slivers and the polyester slivers drawn and thinned by the drawing system are combined in parallel, and in the combining process, the mixing of the cotton fibers and the cotton fibers in a parallel state is realized on one hand, on the other hand, the nubs and the details between the cotton slivers and the terylene slivers are combined in a random state, so that the evenness of the prepared terylene/cotton mixed sliver is improved;

fourthly, directly feeding the polyester/cotton mixed strips prepared in the third step into a strip lap machine, feeding 22-26 polyester/cotton mixed strips, and setting the drafting multiple of the strip lap machine to be 1.05-1.4, so that the polyester/cotton mixed strips with strip structures are made into polyester/cotton mixed rolls with roll structures again under the action of small drafting, and the preparation work before combing is realized; then feeding the polyester/cotton mixed combed roll into a combing machine to prepare polyester/cotton mixed combed strips with strip structures again, deeply and finely combing the polyester/cotton mixed roll by the combing machine, setting the process of the combing machine according to the combing processing process of cotton fibers, feeding 6-8 polyester/cotton mixed rolls in the combing processing, setting the draft multiple of the combing machine between 105 and 115, drawing and thinning the fed polyester/cotton mixed roll with the roll structure into strip polyester/cotton mixed combed strips under the action of large draft, removing short fibers below 15mm in the polyester/cotton mixed roll in the combing process, keeping the length of the fibers in the prepared polyester/cotton mixed combed strips consistent with the main length of the mixed cotton fibers, and simultaneously removing neps, impurities and fiber defects in the mixed roll, the straightening parallelism and the neatness of the fiber are improved;

fifthly, the polyester/cotton mixed combed sliver prepared in the fourth step is processed by two drawing processes to prepare polyester/cotton mixed drawn sliver with good evenness and strip-shaped structure, the drawing process adopts a cotton drawing machine, the first drawing process adopts 6-8 polyester/cotton mixed combed slivers to be jointly fed to prepare a first polyester/cotton mixed sliver, the difference between the drawing multiple of the first drawing and the number of fed slivers is set within 5 percent, under the action of the drawing force of a first drawing system, mutual sliding action occurs between fibers in the fed polyester/cotton mixed combed slivers, so that the fed polyester/cotton mixed combed slivers are drawn and thinned, the polyester/cotton mixed combed slivers drawn and thinned by the drawing system are parallelly combined, and in the combining process, the thick knots among the polyester/cotton mixed combed slivers are formed, The details are combined in a random state, so that the evenness of the prepared first polyester/cotton mixed strip is improved; in the second drawing, 4-6 first polyester/cotton mixed slivers are fed together to prepare polyester/cotton mixed drawn slivers, the difference between the draft multiple of the second drawing and the number of the fed slivers is set to be within 8%, fibers in the fed first polyester/cotton mixed slivers are subjected to mutual sliding action under the action of the draft force of a second drawing system, so that the fed first polyester/cotton mixed slivers are stretched and thinned, the first polyester/cotton mixed slivers stretched and thinned by the draft system are subjected to parallel combination, and in the combination process, the thick knots and the thin knots among the first polyester/cotton mixed slivers are combined in a random state, so that the evenness of the prepared polyester/cotton mixed drawn slivers is improved;

sixthly, directly feeding the polyester/cotton mixed sliver obtained in the fifth step into a vortex spinning frame to obtain vortex blended yarn with a cylindrical cross section, wherein the vortex spinning frame comprises a drafting system and a false twisting system, the drafting system adopts a four-roller three-zone drafting mode, the drafting multiple of the drafting system is the ratio of the ration of the fed polyester/cotton mixed sliver to the ration of the vortex blended yarn, the drafting multiple of the drafting system is more than 180 times, the fed polyester/cotton mixed sliver is stretched and thinned under the large drafting action of the drafting system of the vortex spinning frame to obtain polyester/cotton mixed sliver, the polyester/cotton mixed sliver drafted by the drafting system is output from a front roller jaw and enters the false twisting system, the false twisting system comprises a nozzle, and the polyester/cotton mixed sliver enters the nozzle along a spiral fiber guide channel under the action of axial airflow at the inlet of the nozzle, the outlet of the spiral fiber guide channel is provided with a needle-shaped twisting-resistant piece, so that the polyester/cotton mixed fiber is introduced into the vortex chamber in a state of no twist, at the moment, the front end of the polyester/cotton mixed fiber is drawn into a yarn channel in a spindle under the dragging action of the formed yarn and is twisted into newly formed vortex blended yarn to form a yarn core, the tail end of the fiber is still kept in the fiber guide channel under the condition of being held by a front roller jaw, when the tail end of the fiber is not held by the front roller jaw any more, the tail end of the fiber is not kept in the fiber guide channel under the centrifugal action of the air vortex in the nozzle and is radially dispersed at the spindle inlet, and the tail end of the fiber is lodged on the conical surface of the front end of the spindle under the driving of the air vortex, rotates along with the air vortex, is wound in the subsequent vortex blended yarn and is output through the yarn channel in the spindle, so that the formed vortex blended yarn is composed of a yarn core formed by approximately parallel untwisted fibers and fibers wrapped in a spiral shape at the periphery.