Process for Preventing Ribbon Windings
AssigneeRieter Ingolstadt GmbH
InventorDietmar Greis
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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.
Claims2
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)
Dependencies are inferred from the claim text.