Beam winding apparatus

D - Textiles – Paper – 02 – H

Patent

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Details

D02H 13/00 (2006.01) D02H 1/00 (2006.01) D02H 3/00 (2006.01) D02H 5/00 (2006.01) D02H 13/16 (2006.01) D02H 13/28 (2006.01)

Patent

CA 2430017

An apparatus and method for winding a sheet of aligned parallel yarns onto a beam is described. The beam winder utilizes a circularly arced yarn spool rack that feeds each yarn to an alignment comb through associated guide tubes. The distance between each spool of yarn and the alignment comb is substantially the same for all spools of yarn, thereby equalizing the force necessary to pull them to the comb. Next, the aligned sheet of material is preshrunk using heated rollers and wound onto a beam. Multiple speed controlled stepper motors are utilized to maintain a constant low level of tension in the sheet during the shrinking process. After shrinkage, the tension level of the yarn sheet is increased as it is wrapped onto the beam. A turntable that supports two or more beams is provided to facilitate the rapid switching of beams once one beam has become full.

La présente invention décrit un appareil et une méthode de bobinage d'une feuille de fils parallèles sur une ensouple. Le bobineur d'ensouple comporte un support de bobines de fil circulaire et arqué qui alimente chaque fil à un peigne d'alignement par le biais des tubes guides connexes. La distance entre chaque bobine de fil et le peigne d'alignement est essentiellement la même pour toutes les bobines de fil, ce qui égalise ainsi la force nécessaire pour les tirer vers le peigne. Ensuite, la feuille alignée de matériau est préretraitée à l'aide de rouleaux chauffée et embobinée sur l'ensouple. Plusieurs moteurs pas-à-pas à vitesse contrôlée servent à maintenir constante une faible tension dans la feuille pendant le processus de retrait. Après le retrait, la tension de la feuille de fils est accrue alors que la feuille est enroulée sur l'ensouple. Une table tournante qui supporte deux ou plusieurs ensouples est prévue afin de faciliter le remplacement rapide des ensouples lorsque celles-ci sont pleines.

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