YARN FEEDING DEVICE AND YARN FEEDING METHOD FOR KNITTING MACHINE

WIPO Patent Application WO/2010/143498

A1

A yarn feeding device for a knitting machine comprises a motor (32) for driving a roller (34) from which a yarn is fed out and a rotatable arm (40) which intermediately stores the yarn fed out from the roller and from which the yarn is fed to a knitting machine body (2). A torque generator (38) is provided to apply a variable torque to the arm. A yarn speed is determined from a loop length of a stitch for each knitting needle, and a knitting speed, calculated on the basis of knitting data used in the knitting machine body. To correct yarn tension fluctuation caused by the yarn speed, the yarn speed is converted to a torque to be applied to a buffer using a conversion table (50) at each knitting portion in a knitting course and the torque generator is controlled on the basis of the torque thus obtained. The tension fluctuation of the yarn is reduced so that high-speed knitting and knitting using a weak yarn can be facilitated.

NISHITANI Hirokazu (C/O SHIMA SEIKI MANUFACTURING, LTD. 85 Sakata, Wakayama-sh, Wakayama 03, 〒6410003, JP)
西谷　泰和 (〒03 和歌山県和歌山市坂田８５番地　株式会社島精機製作所内 Wakayama, 〒6410003, JP)

JP2010/058341

December 16, 2010

May 18, 2010

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SHIMA SEIKI MANUFACTURING, LTD. (85 Sakata, Wakayama-shi. Wakayama, 03, 〒6410003, JP)
株式会社島精機製作所 (〒03 和歌山県和歌山市坂田８５番地 Wakayama, 〒6410003, JP)
NISHITANI Hirokazu (C/O SHIMA SEIKI MANUFACTURING, LTD. 85 Sakata, Wakayama-sh, Wakayama 03, 〒6410003, JP)

D04B15/44; D04B15/48

SHIOIRI Akira et al. (4-1-409, Funado-cho Ashiya-sh, Hyogo 93, 〒6590093, JP)

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