CN103726152A - Cotton yarn production process - Google Patents
Cotton yarn production process Download PDFInfo
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- CN103726152A CN103726152A CN201310643359.6A CN201310643359A CN103726152A CN 103726152 A CN103726152 A CN 103726152A CN 201310643359 A CN201310643359 A CN 201310643359A CN 103726152 A CN103726152 A CN 103726152A
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Abstract
The invention discloses a cotton yarn production process. The cotton yarn production process includes the following steps of blowing, wherein a short flow process is adopted in the blowing process, the striking speed is reduced by reducing striking points, and striking is replaced by carding; cotton carding, wherein the cotton carding process is conducted through low tension drafting and at low doffer speed; the combing process, the drawing process, wherein two times of drawing is adopted; the roving process, wherein the temperature of a workshop is controlled at the range from 27 DEG C to 30 DEG C, the relative humidity is controlled at the range from 50 DEG C to 55 DEG C, a channel is kept smooth, and roving evenness CV% is smaller than 4.5% in the normal production process; the spinning process, wherein domestic FA1508 equipment is adopted; the spooling process, wherein a full-automatic spooling machine is adopted, and the speed of the machine is controlled at 850 m/min. By the adoption of the cotton yarn production process, quality of products is remarkably improved, the utilization rate of the equipment is increased, labor consumption is reduced, manual labor intensity is relieved, and manufacturing cost is lowered.
Description
Technical field
The present invention relates to cotton yarn production technology.
Background technology
Along with people's level of consumption improves, cotton yarn fabric has good hygroscopicity, moisture retention, with skin contact without any stimulation, be therefore loved by the people, increasing to cotton yarn fabric demand.But the product that current cotton yarn production technology is produced is still there being qualitatively some problems, as problems such as CV% value difference, end breakage rate height, has caused cotton yarn fabric quality bad.
Summary of the invention
For the problems referred to above, the invention discloses a kind of cotton yarn production technology, this technique is according to comprising the steps:
A. blowing: cotton cleaning process adopts abbreviated system, by reducing striking point, reduces Beater Speed, realizes to comb generation and beating;
B. comb and parallel cotton fibers prior to spinning: carding step adopts low-tension drawing-off, low doffer speed mode to carry out;
C. combing process;
D. mixing in doubling step: adopt two road draftings;
E. Roving Frames: in this operation, workshop temperature is controlled at 27 ~ 30 ℃, 50 ~ 55 ℃ of relative humidity, keep passage smooth, thick Yarn Evenness CV% < 4.5% while normally producing;
F. spinning process: this operation employing equipment is domestic FA1508;
G. winding procedure: adopt fully-automatic spooling machine, the speed of a motor vehicle is controlled at 850 ms/min.
In described Roving Frames, first break draft changes 1.25 times into by 1.19 times.
In described d step, head the less drafting multiple of employing, larger back zone drafting multiple, adopt the six roots of sensation also to close, 1.7 times of back zone drafting multiples, and extreme trace strip adoption are concentrated drawing-off principle, and the six roots of sensation is also closed, 1.3 times of back zone drafting multiples.
In described step f, in spun yarn main drawing area, be provided with and increase the preposition press bar distance clip of additional friction force circle.
Beneficial effect of the present invention is: adopt the present invention, product quality significantly improves; Next has strengthened utilization rate of equipment and installations, thereby has reduced recruitment, has reduced labor strength, also makes manufacturing cost reduce; In preference, strengthen especially the control of counter extensioin district floating fiber, thereby made bar evenness, km details, km slubbing, the km cotton knot of spun yarn have positive effect, further improved cotton yarn quality.
The specific embodiment
In the present invention, the feature such as cotton cleaning process is long for long-staple cotton fiber length, regularity good, and short flannel is few, and fineness is thin, opening and cleaning step adopts abbreviated system, reduces striking point, and Beater Speed suitably reduces, soft strike, with comb generation, beat as far as possible, fully removal of impurities, tip-tap is caducous few broken; Adopt the automatic microbeam of many bags to grab cotton, wrap mixed cotton more, meticulous shredding, even immixture, embody modern blow room system meticulously grab cotton, evenly mix, to comb the technique thinking that generation beats.Unit and whole process adopt the technology such as Photoelectric Detection, pressure sensing, autoleveller, have improved stability, the reliability of operation, guarantee and improved the uniformity of the cotton layer of output, cotton rolling weight irregularity < 1%.
Carding step adopts the technological principle of low-tension drawing-off, low doffer speed.Divide the preferred import of comb fitting " Ge Lafu " card clothing, cylinder, doffer, licker-in, flat-clothing four are supporting, needle point is sharp, surfacing, be equipped with rational cylinder and doffer's differential surface speed (1.9),, comb and parallel cotton fibers prior to spinning transformation installs Fitting Fixed Flat Plate additional, the definition of web increases, guaranteed that fiber shifts smoothly, careful combing, fully gets rid of the Harmful Defect in raw material, reduced cotton knot, doffer gets after out little as far as possible to the pressure that encloses the each pressure roller of bar part, in order to avoid the carded sliver is too tight, be unfavorable for rear operation processing.By technological requirement, strictly control workshop temperature, humidity, guarantee channel part light splitting, cunning, dry, refreshing, sliver impurity/impurity: 12/18; Ubbelohde bar is done CV%:7.0; Web qualification rate: 100%.
Combing process is strengthened the eliminating to short flannel, optimizes each main gauge (as carding isolation distance, top comb are spaced, noil spaces), and cylinder, top comb combing are abundant, noil platform is poor to be controlled in 0.5%, cotton knot/impurity: 12/8, Ubbelohde bar is done CV%:4.8, and cotton noils rate reaches technological requirement ± 0.5%.
Mixing in doubling step adopts two road draftings, with improve the straightening of fibers depth of parallelism, regularity and reduce weight unevenness, considering enter head and fiber more in disorder and exist before crotch, therefore head adopted less drafting multiple, larger back zone drafting multiple, adopt 6 and close 1.7 times of back zone drafting multiples.The main task of extreme trace drafting is to improve straightening of fibers regularity, reduces weight irregular.Just adopt the principle of concentrating drawing-off, 6 and close, 1.3 times of back zone drafting multiples, concentrate on proparea drawing-off.The ripe rule is done CV% < 3.0%.
Roving Frames adopts low velocity, the amount of resetting, heavily pressurize, spaces greatly, the twist (to guarantee that spun yarn does not go out hardhead as prerequisite), less back area draft greatly.Select suitable roving twist factor for increasing cohesive force between fiber, reducing rove surprisingly extends and breaks end, reducing resultant yarn filoplume and to improve yarn quality most important, preferably roving twist factor, rove first break draft multiples different from spun yarn, the nip gauge of different twist factors coordinate, test that weight, bar are dry, single thread force simultaneously, observe and whether normally produce, determine the roving twist factor that can normally produce and be conducive to single thread force.Workshop temperature is strict controlled in 27 ~ 30 ℃, and relative humidity 50 ~ 55% keeps passage smooth, thick Yarn Evenness CV% < 4.5% while normally producing, and well arranged, unwinding is stick not.
Spinning process is selected domestic latest equipment FA1508, the whole imports of its critical component, SKF reel cage, roller, the whole imports of apron, band automatic cleaning apparatus, frequency control, from little yarn to large yarn, according to spinning tension, change, many grades of speed can be set, keep the tension stability in spinning.Adopt and concentrate drawing-off, strengthen back zone and space, intensified pressure, the grasp less than normal of first break draft multiple.Select plain bar neck, shorten the life cycle of rings, steel traveler, thereby it is even, bright and clean to guarantee into Yarn Evenness.
Winder is selected fully-automatic spooling machine, for effectively controlling yarn evenness and guaranteeing even yarn tension, has taked following measures: strict technology is got on the bus, and strengthens equipment Dynamic Maintenance, by ingot checkout facility situation, guarantees that passage is smooth; For reducing the elastic loss of JLC120s yarn, tension force is advisable with less, produces for controlling to greatest extent filoplume simultaneously, and the speed of a motor vehicle adopts low speed to be controlled at 850 ms/min.
In concrete enforcement, the enforcement amount of resetting high efficient technology, emphasis carries out lot of experiments at comb and parallel cotton fibers prior to spinning, combing, Roving Frames, under the prerequisite of ensuring the quality of products, after adjusting, each board quantitatively improves 20% left and right, has improved the utilization rate of good equipment, alleviates spinner's labour intensity, save recruitment, reduced manufacturing cost.
High efficient technology refers on Modern Spinning Process equipment, initiatively excavate Modern New equipment potential, with equipment and the specially technological progress drive process innovation application of part, the amount of resetting was spun in realization in the past, spun yarn high draft is main high efficiency, the spinning unit engineering of high benefit, the potential of excavating equipment to greatest extent, reduces recruitment and energy resource consumption, has additional supply of ability, reduce production costs, and then increase the space that enterprise makes a profit.
The measure that slightly, thin Heavy Weight Per Unit Processing arranges:
Roving Frames: because feeding cotton strip quantity strengthens, in addition the quantitative change of rove itself, the each portion of rove technique has also been done suitable adjustment, nip gauge is increased, and suitably amplify first break draft and change 1.25 times into by 1.19 times, strengthen front leather roller pressure, the better gripping of realization to sliver, because regular roving feeding is larger, so reduce rove fixed length, avoid winding diameter too greatly and damage pressing device.
Spinning process: adhere to " heavily pressurization, control by force ", spinning process has been done to suitable technique adjustment, to adapt to the large quantitatively spinning of rove, the adjustment of forward and backward district ratch, to reduce length of floating area, suitably amplify jaw, reduce and hardhead, the amount of resetting brings spun yarn high draft will suitably increase the weight of front leather roller pressure, increases the gripping to yarn.Simultaneously according to spinning-drafting ability, our emphasis coordinates and optimizes in a large number and contrast test regular roving feeding and spinning-drafting, and finally we determine and at spun yarn, test with 3.0 grams and 3.6 grams of regular roving feedings, through contrast test repeatedly, as following table:
Table one
| Regular roving feeding | Bar is done CV% | Km details | Km slubbing | Km cotton knot |
| 3.6 grams/10 meters | 16.19 | 118.6 | 156.3 | 210.6 |
| 3.0 grams/10 meters | 15.98 | 131.7 | 182.1 | 189.5 |
From resultant yarn index, the large quantitatively index of high efficient technology, does not only worsen on the contrary and is improved, thereby has also proved that large quantitatively high efficient technology is feasible, beneficial to quality, is the optimal selection of high yield and high quality.And adopt after large quantitatively rove, the production capacity of rove can improve more than 20%, and the time of begining a theatrical performance reduced to 18 hours by original 24 hours, the using electricity wisely 25% in 6 hours of peak load cutting every day; And if common process rove working condition constant, identical Speed frames can increase spun yarn is supplied more than 20%, this is apparent because regular roving feeding increases benefit and the advantage brought.
Spinning process is promoted preposition press bar distance clip, has successfully solved spun yarn and has gone out " hardhead " problem, also greatly improves cotton yarn solid carbon dioxide flat, reduces normal yarn faults.
The use of preposition press bar distance clip: fine spining machine mainly adopts the process elements such as roller, reel cage, rubber roll, cushion rubber, upper Xiao, lower Xiao, device composition drafting system, and the motion of the friction field control fiber being comprised of drafting system, realizes the object of drawing-off.Reasonably friction field can effectively be controlled floating fiber motion, reduces the dry deterioration of the bar bringing because of roller draft.And spun yarn press bar distance clip is exactly the technological measure of increase additional friction force circle taked in spun yarn main drawing area, owing to having strengthened the control of counter extensioin district floating fiber, the bar evenness of spun yarn, km details, km slubbing, km cotton knot have positive effect.
We on the same stage, with ingot spun yarn, use identical rove, same technique, different spacing block carry out a large amount of technique contrast tests and related process parameter adjustment, correction data is as follows:
Table two, JLC120 prop up Experimental Comparison data
| Spacing block type | Bar is done CV% | Km details | Km slubbing | Km cotton knot |
| Common spacing block | 17.35 | 256.4 | 261.2 | 218.8 |
| Press bar distance clip | 16.32 | 122.7 | 178.2 | 155.6 |
| Data Comparison | Improve 1.03 | Reduce by 52% | Reduce by 31% | Reduce by 29% |
From upper table contrast, find out that working pressure rod is remarkable to improving spun yarn mass effect, therefore, we prop up working pressure rod spacing block on fine spining machine at JLC120.
In addition, before amplifying respectively in, middle rear roller spaces, drafting force increases and reduces with spacing, and goes out " hardhead " phenomenon and alleviates to some extent.
Back zone drafting multiple is large, has strengthened the control to fiber, is conducive to stretching of trailing hooked fibre, is also beneficial to first break draft district fiber is played to preliminary draft arrangement effect, and loosening of the sliver twist played to positive role, reduces the situation of not outputing " hardhead " of leading.
The selection of roving twist factor will be in conjunction with drafting multiple, roller gauge, regular roving feeding, humiture etc., and twist factor is that the phenomenon that " hardhead " do not outputed in drawing-off in 113 o'clock frequently occurs, when selecting 109 twist factor, goes out " hardhead " and is effectively alleviated.
Claims (4)
1. cotton yarn production technology, is characterized in that: comprise the following steps:
A. blowing: cotton cleaning process adopts abbreviated system, by reducing striking point, reduces Beater Speed, realizes to comb generation and beating;
B. comb and parallel cotton fibers prior to spinning: carding step adopts low-tension drawing-off, low doffer speed mode to carry out;
C. combing process;
D. mixing in doubling step: adopt two road draftings;
E. Roving Frames: in this operation, workshop temperature is controlled at 27 ~ 30 ℃, 50 ~ 55 ℃ of relative humidity, keep passage smooth, thick Yarn Evenness CV% < 4.5% while normally producing;
F. spinning process: this operation employing equipment is domestic FA1508;
G. winding procedure: adopt fully-automatic spooling machine, the speed of a motor vehicle is controlled at 850 ms/min.
2. cotton yarn production technology according to claim 1, is characterized in that: in described Roving Frames, first break draft changes 1.25 times into by 1.19 times.
3. cotton yarn production technology according to claim 2, is characterized in that: head adopt less drafting multiple, larger back zone drafting multiple in described d step, adopts the six roots of sensation also to close, 1.7 times of back zone drafting multiples, extreme trace strip adoption are concentrated drawing-off principle, and the six roots of sensation is also closed, 1.3 times of back zone drafting multiples.
4. cotton yarn production technology according to claim 3, is characterized in that: in described step f, in spun yarn main drawing area, be provided with and increase the preposition press bar distance clip of additional friction force circle.
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| CN201310643359.6A CN103726152A (en) | 2013-12-05 | 2013-12-05 | Cotton yarn production process |
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| CN201310643359.6A CN103726152A (en) | 2013-12-05 | 2013-12-05 | Cotton yarn production process |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106637765A (en) * | 2016-12-27 | 2017-05-10 | 安徽雨禾精纤股份有限公司 | Processing technology of noil |
| CN107217350A (en) * | 2017-07-27 | 2017-09-29 | 安徽华茂纺织股份有限公司 | The production method of 160S~200S RING SPINNING purified cotton yarns |
| CN112226862A (en) * | 2020-09-30 | 2021-01-15 | 安徽荣业纺织有限公司 | Preparation method of high-dye-uptake and high-strength cotton textile yarns |
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| CN106637765A (en) * | 2016-12-27 | 2017-05-10 | 安徽雨禾精纤股份有限公司 | Processing technology of noil |
| CN107217350A (en) * | 2017-07-27 | 2017-09-29 | 安徽华茂纺织股份有限公司 | The production method of 160S~200S RING SPINNING purified cotton yarns |
| CN112226862A (en) * | 2020-09-30 | 2021-01-15 | 安徽荣业纺织有限公司 | Preparation method of high-dye-uptake and high-strength cotton textile yarns |
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Application publication date: 20140416 |