Device for producing special yarn

Abstract

The special yarn manufacturing apparatus of the present invention performs the speed change of the front roller based on a plurality of pattern data indicating changes in the thickness of the spun yarn, and manufactures a special yarn corresponding to the above pattern data including at least information on the distance between thick pitches. Wire. The CPU controls the first servomotor in accordance with an execution program for executing a repeating pattern of one cycle consisting of pattern data larger in number than the pattern data based on the pattern data stored in the working memory. , thereby spinning a spun yarn that performs a repeated pattern structure of one cycle.

Description

technical field

[0001] The present invention relates to a special yarn manufacturing device, in particular to a special yarn manufacturing device for manufacturing (spinning) a special yarn whose yarn thickness is not constant but varies, which is called a slub Yarn or fancy yarn. Background technique

[0002] Conventionally, there has been a special yarn called a slub yarn or a fancy yarn in which the thickness of the spun yarn is not constant but is locally formed thicker. like figure 2 As shown in the figure, a special yarn (slub yarn) SY is manufactured, and the thickness (thickness D), length (thick length L) and interval (between thick segments) of the thick segment S (thick yarn part) Spacing P) varies. To manufacture this special yarn, a fine spinning machine having the same basic structure as that of a ring spinning machine, and a front roller and a rear roller of the drafting section (drafting device) can be independently driven at variable speed, respectively. ...

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