Winding – tensioning – or guiding – Coil holder or support – Spool or core
Patent
1985-08-14
1987-04-21
Gilreath, Stanley N.
Winding, tensioning, or guiding
Coil holder or support
Spool or core
242 431, B65H 5438, B65H 5432
Patent
active
046590277
ABSTRACT:
A method and apparatus for winding textile yarns into core supported packages is disclosed, and which is characterized by the ability to produce relatively large packages which are adapted to permit a high speed unwinding by withdrawal of the yarn over one end of the package. The method and apparatus involves controlling the yarn traverse guide so as to include stroke modification cycles during which the traverse stroke is progressively contracted and then increased, with the stroke modification cycles being designed to produce a precisely cylindrical package end with a uniform distribution of hardness along the package. In one illustrated embodiment, a number of stroke modification cycles having a relatively large contraction alternate with a number of stroke modification cycles having a relatively small contraction. In addition, the speed of the yarn guide may be constantly accelerated and decelerated to avoid undesirable patterns, with the changes in speed being coordinated with the stroke modification cycles to provide a uniform yarn tension in the package.
REFERENCES:
patent: 3730448 (1973-05-01), Schippers et al.
patent: 3876166 (1975-04-01), Kodokura et al.
patent: 4221344 (1980-09-01), Lohest
patent: 4296889 (1981-10-01), Martens
patent: 4325517 (1982-04-01), Schippers et al.
patent: 4498637 (1985-02-01), Yamamoto et al.
patent: 4504021 (1985-03-01), Schippers et al.
patent: 4504024 (1985-03-01), Gerhartz
patent: 4555069 (1985-11-01), Maeda et al.
Lenz Friedhelm
Schippers Heinz
Barmag Barmer Maschinenfabrik AG
Gilreath Stanley N.
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