Winding – tensioning – or guiding – Helical or random winding of material – Distributing material along the package
Patent
1997-06-26
1998-10-27
Mansen, Michael
Winding, tensioning, or guiding
Helical or random winding of material
Distributing material along the package
2424857, 2424867, B65H 5438, B65H 5440
Patent
active
058268154
ABSTRACT:
A yarn package (both conical and cylindrical) is produced at a winding station of a textile winding machine by alternately: accelerating the friction roller driving the yarn package with slippage between the friction roller and the entire surface of the yarn package; and decelerating the friction roller driving the yarn package without slippage between the friction roller and at least part of the surface of the yarn package, e.g., the neutral zone of a conical package. The periods (and thus the frequencies and angular velocities) of the friction roller and the yarn package are detected by sensors which communicate the detected values to a control and evaluation device. Based on the detected values during at least one phase of deceleration, the control and evaluation device estimates the yarn package radius during an acceleration phase. Additionally, based on detected values during the acceleration phase, and based on the known radius of the friction roller, the control and evaluation device calculates a distorted radius of the yarn package and compares the estimated radius with the distorted radius to determine a value of slippage that occurs during the acceleration phase. The winding process is then adjusted if standard values of slippage indicative of a quality yarn package are not achieved.
Hermanns Ferdinand
Kruger Andreas
Meyer Urs
Mansen Michael
W. Schlafhorst AG & Co.
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