Autoconer 338 – Winding Technology. Multi-Optionality, Know-how ...

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Yarn package winding – Key Technology in the textile production process. 2 Materials wound on the Autoconer 338. • Cotton • Wool • Polyester • Viscose • PAN • Linen • Blends Yarn package winding is the completion of the yarn forming process and the starting point for various subsequent processes, from weaving or knitting to textile finishing. This interface function of winding is what makes the winding process so important. In winding, the course is set for high cost-effectiveness in the following stages of the textile production chain. At the same time, care is taken that the quality of the yarn wound will meet the demands placed on it by the finished articles. Schlafhorst – specialist of yarn winding machines in the world market for over 50 years – concerns itself intensely with these manifold requirements and develops innovative winding technology to meet them. Decisive for the universal acceptance of the Autoconer is the fact, that Schlafhorst in its work places the focus not narrowly on winding, but, considering winding as an important part and integral stage of the entire textile production chain, consistently develops and advances winding technology with the requirements of, and benefits for, the entire textile production in mind. Textiletechnological know-how crucial in this context is elaborated in cooperation with world-leading partners in textile machine engineering. • Kevlar • Special fibres • Natural fibre yarns • Manmade fibre yarns • Short-staple yarns • Long-staple yarns • Ring yarns • Compact yarns • SiroSpun yarns • Hard and soft Core yarns • High-twist yarns • Plied yarns • Fancy (Effect) yarns • OE-Rotor yarns • Mule yarns • Repco yarns Typical features of the Schlafhorst performance are: extensive textiletechnological expertise, consequent market and customer orientation, early recognition of changes in market conditions and requirements, and excellent customer advice and training service all over the world. These have contributed to the world-wide success of the Autoconer, from the first to the present generation. Translating this know-how into intelligent winding machine technology has made Schlafhorst for decades the innovation leader in the international arena. This is true of the Autoconer yarn splicing technology with the modular-design splicer system and of the quality of the Autoconer yarn packages due to the innovative FX- series with its efficient modules Autotense FX, Propack FX, Variopack FX and Ecopack FX. Thanks to its ingenious modular concept, the Autoconer offers a convincing universality which enables the machine to produce yarn packages optimally suited for any of the textile production processes downstream of winding. Autoconer yarn packages for the downstream production processes. • Dyeing • Assembly winding/Twisting • Beam warping • Sectional warping • Weaving • Warp Knitting • Weft Knitting
Autoconer yarn packages for dyeing. In yarn package dyeing, it is important that dye penetration is uniform and level dyeing is ensured throughout the package. Success in package dyeing depends on many factors including material of the yarn, dyes used, method of dyeing, dyeing apparatus or dyeing liquor pump. What determines the result, however, is the even build and structure of the crosswound package to be dyed. Thanks to the intelligent control and regulation systems and winding components of the Autoconer 338, yarn packages can made to suit the requirements of package dyeing exactly. The known dyer's adage saying "Well wound is half dyed" is a measure of the importance of wellstructured yarn packages for dyeing, and of the enormous worth of the Schlafhorst winding technology and contribution in this field. The required yarn density of dye-packages varies according to dyeing machine, method of dyeing and material. Package density in winding is directly influenced by the parameter “yarn tension”. Thanks to Autotense FX, the desired package density can be obtained with precision, as the yarn tension is set at the Informator as an absolute value. The constant level of yarn tension ensured by Autotense FX and the elimination of critical pattern winds on the package through Propack FX are a guarantee for the production of Autoconer packages with an extremely uniform yarn structure and yarn density. Reproducible uniformity of the package density from package to package is ensured by centralised setting of the winding parameters at the Informator. A further factor contributing to the optimisation of the structure of dye packages is the lateral yarn layer displacement on the package, achieved by traverse motion of the yarn-guide drum. The regulation of the yarn tension by Autotense FX has the additional advantage of increasing the average winding speed, which means higher productivity in the winding of dye packages on the Autoconer 338. Whirling the yarn ends for fibre entangling in the splicing process to achieve spliced joints that are similar to the yarn is also beneficial for ensuring that in yarn dyeing the short spliced joints have the same dyeing property as the yarn, so that visible off-shade spots in the fabric are avoided. Dye package density as a function of yarn tension. Specially for package dyeing of elastic Core yarns and other elastic yarns, where homogeneous dyeing is critical because of bulging-out package flanks or uncontrollable breakdown of the package structure, Schlafhorst offers as a practicable solution the closed-loop control system Variopack FX. This system coordinates the parameters yarn tension and package contact pressure throughout the build-up of the package, so that well-structured packages with good dimensional stability are produced. Yarn packages produced on the Autoconer 338 are dyed with excellent results, colouring throughout the package and from package to package is absolutely even and the results are reproducible. Thanks to the optimal package structure achieved with Propack FX – an essential factor for cost-effective processing in the production stages downstream of winding – rewinding of the packages after dyeing for use in subsequent production processes can be dispensed with and, depending on the material of the yarn, the Autoconer packages can be used directly for the warp or the weft. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Batch Package density [g/cm3 ] 0.30 0.33 0.36 0.38 0.40 Package contact pressure S S S S S Autotense FX [cN] 8 14 21 25 30 Autospeed 75% 60% 60% 60% without Winding speed [m/min] 1,200 1,400 1,400 1,400 1,400 Average winding speed [m/min] 890 1,100 1,220 1,275 1,380 Material 100% CO, carded Yarn count 20 tex (Ne 30, Nm 50) Drum type 2-pitch sym. Package format 6”, cylindrical (220 mm) Wound with lateral yarn layer displacement Package density Even package density. 20 winding positions. Yarn count 42 tex (Ne 14, Nm 24) Material PES/CV (50/50); 892 T/m Yarn guide drum, package format 2-pitch asym. 4°20 Yarn tension Autotense FX 15cN (with Autospeed 50%) Setpoint length 45,000 m Greatest evenness of package density. Targeted generation of the package density by yarn tension adjustment. 3 +1.0% +0.5% +– 0% –0.5% –1.0%
Page 1: Autoconer 338 - Winding Technology.
Page 5 and 6: Autoconer packages for Warping and
Page 7 and 8: Up-to-date yarn structures - Optima

Autoconer 338 – Winding Technology. Multi-Optionality, Know-how ...

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