Method of controlling the yarn tension in a weaving machine

Details Method of controlling the yarn tension in a weaving machine Method of controlling the yarn tension in a weaving machine

1995-10-02

1997-09-23

Falik, Andy

Textiles: weaving

Miscellaneous

Loom cleaning

364470, 3649211, 395904, D03D 4734, D03D 4918

Patent

active

056694210

ABSTRACT:
A control curve is calculated for controlling the yarn tension including warp and weft yarn tensions in a weaving loom by comparing a previously determined yarn tension curve with a desired value for the yarn tension curve. The control characteristic is optimized by continuous iteration. A further optimization of the yarn tension curve takes place by taking account of variable parameters in the yarn tension curve, for example yarn breakage analysis, beat-up force of the reed, and/or shed change. The control device for performing the method can be implemented with conventional logic. The method automatically carries out in an advantageous manner for weft and warp yarns a matching to the optimum yarn tension as a function of time on the basis of preselected parameter values.

REFERENCES:
patent: 5134568 (1992-07-01), Sainen
patent: 5155691 (1992-10-01), Sainen
patent: 5295515 (1994-03-01), Kato
patent: 5320142 (1994-06-01), Sainen
patent: 5321621 (1994-06-01), Sainen
patent: 5322089 (1994-06-01), Yamada
patent: 5440495 (1995-08-01), Sainen et al.
patent: 5476122 (1995-12-01), Schuster et al.
Wulfhorst, Burkhard et al., "Weft Yarn Strain Reduction by Means of a Newly Developed Regulated Weft Yarn Brake", Textil Praxis International, 1991, vol. 12, pp. 1292-1298.

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