Device for controlling yarn ballooning at the winding head of a

Details Device for controlling yarn ballooning at the winding head of a Device for controlling yarn ballooning at the winding head of a

1995-05-10

1997-02-25

Stryjewski, William

Winding, tensioning, or guiding

Strand guide

Oscillatable or reciprocable

57354, 57356, 242157R, B65H 5700

Patent

active

056052979

ABSTRACT:
In the course of rewinding yarn on a bobbin winding machine, the yarn performs a balloon-like oscillation around the delivery bobbin. The shape of the balloon has an effect on the yarn tension force and thus on the behavior of the yarn during winding. To reduce resulting tension fluctuations and particularly tension peaks, the course of yarn travel is influenced by means of a device in accordance with the present invention having an annular yarn guide surface comprised of a first set of guide surfaces collectively forming a part of a truncated cone the larger diameter of which is adjacent the delivery bobbin and a second set of guide surfaces collectively forming converging edges of an at least five-sided truncated pyramid with each pyramidal edge being disposed to extend axially between two adjacent first guide surfaces forming recessed notches in their collective conical surface. The conicity of the truncated cone and of the truncated pyramid extending in the same direction with coinciding axes to arrange the first and second guide surfaces symmetrically with respect to one another.

REFERENCES:
patent: 2170194 (1939-08-01), Griggs
patent: 2629566 (1953-02-01), King
patent: 3043537 (1962-07-01), Chapman et al.
patent: 3094835 (1963-06-01), Nimtz et al.
patent: 3203642 (1965-08-01), Hirst
patent: 4334653 (1982-06-01), Whellams
patent: 5044572 (1991-09-01), Grecksch et al.

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