Process for Preventing Ribbon Windings

Abstract

A process is provided for preventing ribbon windings when cross-wound bobbins are wound in random winding on a textile machine. The thread from a thread guide is traversed over a double stroke. The traversing frequency of the thread guide is continuously varied during the bobbin travel within a predetermined deviation range around a nominal frequency. A random stringing together of individual interference patterns is generated by a random generator by selecting a target value for the traversing frequency from the deviation range for every interference pattern. The traversing frequency is adjusted by a control device on the selected target value.

1 . Process for preventing ribbon windings during the winding of cross-wound bobbins ( 4 ) in random winding on a textile machine ( 1 ), wherein the thread ( 3 ) is traversed from a thread guide ( 6 ) passing through a double stroke (DS) moving back and forth and wherein, for generating anti-patterning, the traversing frequency (F) of the thread guide ( 6 ) is varied continuously during the bobbin travel within a preset deviation range (DR) around a nominal frequency (NF), characterized in that a random stringing together of individual interference patterns ( 13 ) is generated by a random generator ( 11 ) that selects for every interference pattern ( 13 ) a nominal frequency (NF) for the traversing frequency (F) from the deviation range (DR) and the traversing frequency (F) is adjusted by means of a control device ( 14 ) on the target value (TV) set in each case, wherein for every double stroke (DS) or for every single stroke of the thread guide ( 6 ) another value of the traversing frequency (F) is maintained constant over the further course of the single stroke (SS) or double stroke (DS). 
     
     
         2 - 19 . (canceled)