Apparatus and method for winding yarn in a wild winding onto a package
AssigneeGeorg Sahm GmbH & Co. KG
InventorWinfried Poppinghaus
Life of this patent
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Abstract
An apparatus and method for winding a yarn in a wild winding onto a package, includes a reversing screwthread shaft (1) having an endless screwthread groove (2) and a yarn guide which produces in particular a creep stroke motion. The reversing screwthread shaft (1) has a turns number which establishes a double stroke having a forward stroke (3) and a reverse stroke (4) and which includes a mixed number and whose integral component is .gtoreq.2 and the balance of which represents a true fraction, and has on each side a plurality of reversals (5) which in particular are arranged in axially displaced relationship with each other. A half turns number which establishes a forward stroke (3) and a half turns number which establishes the associated reverse stroke (4) are the same.
Claims12
An apparatus for winding a yarn onto a package, said apparatus comprising:
- a reversing screwthread shaft having an endless screwthread groove which includes a plurality of yarn guide reversals, said endless screwthread groove having groove portions which correspond to forward yarn guide strokes and groove portions which correspond to reverse yarn guide strokes, said endless screwthread groove being configured so as to have a turns number that comprises an integer component that is equal to or greater than 2 and a remainder that is a true fraction and further being configured so as to have a half turns number associated with a forward stroke that is equal to a half turns number associated with a reverse stroke;
- and
- a yarn guide for guiding the yarn onto the package, said yarn guide being configured to follow said endless screwthread groove to complete forward and reverse strokes.
A method for winding a yarn onto a package, said method comprising the steps of:
- guiding a yarn guide along an endless screwthread groove formed in a reversing screwthread shaft, the endless screwthread groove including a plurality of reversals and having groove portions which correspond to forward yarn guide strokes and groove portions which correspond to reverse yarn guide strokes;
- and
- rotating the reversing screwthread shaft in a manner in which the shaft completes a predetermined number of turns each time the yarn guide completes both a forward stroke and a reverse stroke, the predetermined number having an integer component that is equal to or greater than 2 and a remainder that is a true fraction, wherein the number of turns completed by the shaft during at least one forward stroke is equal to the number of turns completed by the shaft during at least one reverse stroke.
Dependencies are inferred from the claim text.