Method of winding yarn on bobbin and machine therefor

Details Method of winding yarn on bobbin and machine therefor Method of winding yarn on bobbin and machine therefor

1987-09-17

1988-10-25

Gilreath, Stanley N.

Winding, tensioning, or guiding

Coil holder or support

Spool or core

B65H 5438

Patent

active

047798130

ABSTRACT:
A method and apparatus for performing the method of winding a yarn on a bobbin holder so as to avoid a ribbonning phenomenon produced during winding, comprising the steps of rotating the bobbin holder; traversing the yarn along an axis of the bobbin holder to form a yarn package on the bobbin holder; setting a ribbon occurrence width and a lower limit value of a yarn winding angle at which the yarn is wound with respect to a vertical plane perpendicular to an axis of rotation of the bobbin holder; calculating an upper limit value of the yarn winding angle from the lower limit value in such a manner that a winding ratio, which is defined as a ratio of the number of rotations of the bobbin holder to the number of yarn traversing strokes, is not within the ribbon occurrence width; and as soon as the winding ratio reaches the lower limit value of the yarn winding angle, increasing rapidly the number of yarn traversing strokes from the lower limit value of the yarn winding angle to the upper limit value, and then decreasing gradually the number of yarn traversing strokes from the upper limit value of the yarn winding angle to the lower limit value with a gradient larger than that of the winding ratio.

REFERENCES:
patent: 4049211 (1977-09-01), Spescha
patent: 4504021 (1985-03-01), Schippers et al.
patent: 4504024 (1985-03-01), Gerhartz
patent: 4515320 (1985-05-01), Slavik et al.
patent: 4659027 (1987-04-01), Schippers et al.
patent: 4667889 (1987-05-01), Gerhartz
patent: 4676441 (1987-06-01), Maag
patent: 4696435 (1987-09-01), Hermanns
patent: 4697753 (1987-10-01), Schippers et al.

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