Yarn false twisting device
AssigneeMurata Kikai Kabushiki Kaisha
InventorsYoshihiro Kino, Toshikazu Nishiyama
Life of this patent
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Abstract
A yarn false twisting device in which two motors 30, 40 are installed separately for each of the drive shafts 30a, 40a of each false twist application element, and each motor is controlled by a control unit C in accordance with changes in the yarn tension. The installation of separate motors for each drive shaft of each false twist application element has enabled the elimination of complex power transmission mechanisms such as an endless belt or idler, making the yarn false twisting device more compact. Furthermore, each motor is controlled so as to rotate in mutually synchronic fashion according to changes in the yarn tension, improving the overall quality of false twisted yarn.
Claims9
A yarn false twisting device comprising:
- two endless belts arranged to apply a false twist to a yarn drawn across the crossing points of the belts;
- separate driving shafts driving each of said belts;
- separate drive motors driving each of said drive shafts;
- a yarn tension detecting means operative to detect tension in the yarn drawn across said belts;
- and
- a controlling means operative to control the rotation rates of each of said drive motors in response to the yarn tension detected by said yarn tension detecting means.
Dependencies are inferred from the claim text.