Tension control method using fluff control device
AssigneeMurata Kikai Kabushiki Kaisha
InventorsFumiaki Nakaji, Tomonari Ikemoto
Life of this patent
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Abstract
The present invention introduces a yarn y that is unwound from a supply bobbin 1 into a control member 3 for controlling the propagation of twisting toward a supply bobbin, then introduces the yarn into a friction-disk-type false twister 4 to suppress fluff, and finally controls the yarn feeding speed in the friction-disk-type false twister in order to control the yarn tension. The present invention can reduce the amount of fluff on a yarn that is unwound from a supply bobbin and wound around a winding package and control the yarn tension. Therefore, the present invention eliminates the needs for a special device for controlling the tension.
Claims2
A tension control method that uses a fluff control device, comprising the steps of:
- introducing a yarn that is unwound from a supply bobbin into a control member;
- controlling the propagation of twisting toward the supply bobbin;
- introducing the yarn into a friction-disk-type false twister;
- suppressing any fluff;
- and
- controlling the yarn feeding speed in said friction-disk-type false twister so as to control the yarn tension, wherein
- the yarn feeding speed in the friction-disk-type false twister is sequence-controlled based on the variations in yarn tension occurring if the yarn feeding speed in the friction-disk-type false twister is constant.
A tension control method that uses a fluff control device comprising the steps of:
- introducing a yarn that is unwound from a supply bobbin into a control member;
- controlling the propagation of twisting toward the supply bobbin;
- introducing the yarn into a friction-disk-type false twister;
- suppressing any fluff;
- and
- controlling the yarn feeding speed in said friction-disk-type false twister so as to control the yarn tension, wherein
- the friction-disk-type false twister controls the yarn feeding speed using feedback such that the feedback controls the tension of the yarn between the winding package and the friction-disc-type false twister by means of the tension measuring device, the control unit and the drive source of the friction-disc-type false twister.
Dependencies are inferred from the claim text.