Turret type yarn winder with reduced tension variation during sw

Details Turret type yarn winder with reduced tension variation during sw Turret type yarn winder with reduced tension variation during sw

1995-06-22

1998-02-10

Stryjewski, William

Winding, tensioning, or guiding

Coil holder or support

Spool or core

242 18R, 242 25A, B65H 5400, B65H 6744

Patent

active

057160163

ABSTRACT:
To improve the success rate of yarn switching by reducing the variation of the winding tension during the yarn switching operation, a turret type yarn winder is provided, wherein the upper yarn switching mechanism 8 and the lower yarn switching mechanism 9 are provided at positions wherein, when the empty bobbin 50 held by the spindle 4 is displaced by the rotation of the turret member 2 toward the yarn 60 supported by the respective yarn path restriction guides of the yarn switching mechanisms 8, 9, the circumference of the empty bobbin 50 is brought into contact with the yarn 60 at a contacting angle, which angle increases as the turret member rotates, and wherein the dog portion 30 mounted to the turret member 2 causes the yarn searching guide 25 of the lower yarn switching mechanism 9 to rotate in synchronism with the rotation of the turret member 2, and the guide plate 31 for forming the anchor yarn winding is actuated to move the yarn 60 in the axial direction of the bobbin 50.

REFERENCES:
patent: 3792818 (1974-02-01), Bauer et al.
patent: 4083505 (1978-04-01), Burkhardt
patent: 4146186 (1979-03-01), Burkhardt
patent: 4210293 (1980-07-01), Fromaget
patent: 4491282 (1985-01-01), Hubner
patent: 4496109 (1985-01-01), Cardell
Advertisement re TW-555RA, Fiber Producer, Aug. 1979.
Advertisement re Rieter Concept, Rieter Machine Works, Ltd. CH-8406 Winterthur, Switzerland.

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