Method and apparatus for switching yarn in turret-type winder

Details Method and apparatus for switching yarn in turret-type winder Method and apparatus for switching yarn in turret-type winder

1984-06-07

1985-11-12

Gilreath, Stanley N.

Winding, tensioning, or guiding

Coil holder or support

Spool or core

B65H 5406, B65H 5442, B65H 6704

Patent

active

045523134

ABSTRACT:
In a turret type automatic winder, a method for automatically switching a yarn from a package to an empty bobbin when doffing the package, in which a bobbin holder carrying the package is preliminary accelerated by an acceleration disc for maintaining a yarn tension in a proper range before yarn switching with a preset urging force of the acceleration disc onto the bobbin holder increased continuously or stepwisely corresponding to a size of the package. An apparatus for carrying out the above method comprises a pressure control means for a fluid operating a rotary actuator utilized for urging the acceleration disc onto the bobbin holder, which means includes a cam displaceable with a growth of the package and a regulator valve actuated by the cam for outputting a regulated pressure to the rotary actuator.

REFERENCES:
patent: 4033519 (1977-07-01), Abe et al.
patent: 4298171 (1981-11-01), Fluckiger et al.
patent: 4394986 (1983-07-01), Hasegawa et al.
patent: 4487374 (1984-12-01), Sugioka et al.

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