Ved spindingproduktion opstår der ofte problemer som indpakning af barnesenge, knækkende barnesenge, konkave forklæder, ødelagte forklæder og klemmeforklæder, der direkte påvirker spindingskvaliteten og normal produktion. Så hvad er de almindelige problemer i brugen af barnesenge og forklæder? Hvordan løses det?
Snoede problem
Det mest fremtrædende problem i produktionen og anvendelsen af COTS er den hyppige forekomst af viklingsproblemer, hvilket resulterer i produktionsproblemer, der påvirker garnkvaliteten og normal produktion. Brug af bløde elastiske barnesenge uden behandling har en meget betydelig effekt på forbedring af garnens jævnhed, men problemet med vikling er alvorligt. Der er to måder at løse problemet på, den ene er at forbedre rullemodstanden for barnesenge, den anden er at forbedre produktionsbetingelserne (miljøet) og forbedre barnesengenes tilpasningsevne.
1) For at forbedre barnesengens opløselighed overtrækkes overfladen af barnesenge med høj hårdhed normalt med belægning, en: B-komponent er 1: 2-1: 3, og et par dråber D-komponent (speciel vinder) er tilsat; barnesengens overflade kan mikrobehandles med barnesenge til middelhårdhed, og en: B-komponent er 1: 10-1: 15. Overfladen på barnesenge med lav hårdhed behandles med et specielt anti-viklingsmiddel. A: B-komponenten er 1:11 ~ 1:18, hvilket i høj grad kan forbedre barnes antidviklingsegenskaber og har ringe indflydelse på garnens jævnhed.
2) The higher the sugar content of cotton, the easier it is to wrap the cot. Pay attention to control the use proportion of polysaccharide cotton. It is better not to exceed 30% in summer and 60% in winter. The cotton with high sugar content needs special sugar remover for pretreatment. The proportion of sugar remover can reach 100% in summer. In winter, a small amount or no sugar remover can be used according to the actual production situation.
3) Environmental temperature and humidity have a great influence on cot winding. Generally, the sugar content of Xinjiang cotton or Gansu cotton is more, which is more sensitive to the relative humidity of the workshop. The relative humidity of the spinning workshop should not exceed 60% in production. For the soft elastic cots that are not treated, the spinning workshop temperature in winter should be no less than 28 ℃, so as to maintain the elasticity and holding force of cots and reduce the phenomenon of draft failure.
4) Due to the electrostatic effect of spinning cellulose varieties, such as viscose, modal, Tencel, bamboo pulp fiber, etc., the cots are very easy to return to flower in the final parallel process, which not only has many broken ends, difficult to drive, but also has many defective products. Spraying antistatic oil agent on the surface of cellulose raw material package can effectively solve the problem that the cots in the final blending process are easy to return to flower.
Knudret garn og trækproblem
In the actual production, & quot;lumpy yarn & quot; often appears on the drawing frame and roving frame, and the spinning frame often fails to open, resulting in the increase of broken ends, yarn defects and production difficulties. Through analysis, the problem is mainly caused by the improper use of the cot apron in the draft area and the corresponding process configuration.
1) In order to improve the yarn evenness, the drafting technology of & quot;tight separation, heavy pressure & quot; or & quot;two big and one small & quot; (i.e. big roving twist, big spinning back separation and small spinning back draft multiple) is usually adopted. When it is in the critical process, although the yarn evenness is the best, it is also the most dangerous and prone to quality accidents, so the critical process should be avoided as much as possible.
2) According to the principle of spinning drafting, in order to make the drafting work smoothly, the actual holding force of the jaw composed of cot (apron) and roller should be adapted to the drawing force, and the drafting condition that the minimum holding force is greater than the maximum drawing force should be met. When the gripping force is not enough to overcome the stretching force, it will cause & quot;pimple yarn & quot; on the drawing frame and roving frame, and the phenomenon of drafting failure on the spinning frame.
3) When & quot;lumpy yarn & quot; appears on the drawing frame and roving frame or the drafting cannot be opened on the spinning frame, the first step is to check whether the draft components such as cots, aprons, rollers, upper and lower pins, pressure bars and cradle are in good condition, and replace the defective components in time; adjust the process configuration to avoid excessive drafting; the drawing frame can raise the pressure bar properly, enlarge the roller spacing or increase the draft spacing properly Increase the draft ratio of the back area; the roving frame and the spinning frame can be replaced by a larger spacing block, and the roller spacing can be appropriately enlarged or the draft ratio of the back area can be increased.
4) Når fugtgenvindingshastigheden for halv - færdige produkter er stor, er det også let at fremstille & quot; klumpet garn & quot; eller trækfenomen, især når råvarerne regner, regnvejr eller ferietid er lang, halv - færdige produkter er mere modtagelige for fugt. Når fugtigheden genvindes af halv - færdige produkter, øges friktionskoefficienten mellem fibrene i overensstemmelse hermed, hvilket gør trækning vanskelig. Når fugtgenvindingshastigheden for halv - færdige produkter derfor er stor, bør den relative fugtighed i den forudgående spindeproces reduceres korrekt, og varmekonserverings- og affugtningsarbejdet bør udføres i god tid i løbet af feriekørslen.
Problemer som konkave i gummiringe
Undertiden har den roterende ramme konkavt øverste forklæde, bøjet nedre forklæde eller bagerste udkastområde. Det er hovedsageligt forårsaget af forkert udkaststeknologi i mellemzonen.
1) When spinning polyester cotton varieties, the selected spacing block is small, which will cause the rubber ring jaws to be too tight, the movement of the upper rubber ring is not stable, resulting in slippage and dented, forming the middle concave of the upper rubber ring. Therefore, enlarging the spacing block properly can eliminate the concave phenomenon of the upper rubber ring.
2) Jernrullen spiller en drivende og kontrollerende rolle i driften af den øverste gummiring. I den langvarige - langsigtede brugsproces, der påvirkes af temperaturen og fugtigheden og de resterende syreholdige stoffer på overfladen af gummiringen, er overfladen på jernrullen let at ruste og forurene og ruste det indre lag af gummiring, hvilket gør gummiringen ustabil og ødelagt. På nuværende tidspunkt bruges de nye teknologier, såsom den midterste gummirulle, den midterste og øverste rulle af kulfiber, den midterste og øverste rulle af aluminiumsforing, den midterste og øverste rulle af retikulation og den øverste pin af kulfiber. , som effektivt kan løse problemet med tegningskontrol i det midterste område.
3) When spinning pure polyester or its blended varieties, it is easy to clamp the apron. The main reason is that after the end of spinning is broken, the front rubber roller or roller is twined with flowers, and the grip strength of the front jaw is reduced, while the polyester fiber is long and the traction force is large, which still drives the rubber ring to move forward, and the movement of the lower rubber ring at the lower pin is blocked, resulting in the clamping of the rubber ring. The other is the tension failure of the lower apron tension frame, which causes the lower apron to slip. Therefore, it is necessary to reduce yarn breakage as much as possible, make frequent rounds of the shift workers, deal with the breakage in time, and replace the failed tension frame in time.
4) The draft area after spinning must be loose. It is mainly caused by the insufficient holding power of the middle roller and the iron roller. First, check and replace the bad draft parts in the middle area, move the iron roller forward properly, increase the holding force in the middle area, and also increase the draft multiple in the back area.
Barneseng forklæde er et vigtigt spindeudstyr, der har stor indflydelse på garnkvaliteten. Alle spinerende virksomheder bør lægge stor vægt på forvaltningen af barnesenge. I betragtning af alle slags problemer i brugen af barnesenge og forklæder bør de analyseres omhyggeligt og løses i kombination med den faktiske produktion af virksomheden.
