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    • 10. 发明专利
    • EXTENSION ASSIST DEVICE FOR AUTOMATIC WINDER
    • JPH058939A
    • 1993-01-19
    • JP18816691
    • 1991-07-01
    • MURATA MACHINERY LTD
    • MATSUI ISAMU
    • B65H57/22
    • PURPOSE:To suppress generation of thread breakage or the like at the time of ending winding so that coping with high speed rewinding can be attained by providing the first balloon restricting member of lowering down a restricting position with extension of a feed thread bobbin and the second balloon restricting member having a contraction arranged in the vicinity of a bobbin top part. CONSTITUTION:The second balloon restricting member 36 is a cylindrical body of small diameter with the upper end fixed to a mouth port 20 or the like to position a contraction 36a, provided in the lower end, in an almost fixed distance L2 from a top part of a bobbin 8, and this distance L2 is set to a range of suppressing a rise of winding end tension by reducing a contracting effect with the periphery of the top part of the bobbin 8 not in contact with a running thread. The first balloon restricting member 35 is a cylindrical body of large diameter extendable/contractable to store the second balloon restricting member 36 in the inside, and a lift bed 24 is mounted to a suitable part of the member 35 and constituted so that the bed can be lowered down with extension of a feed thread bobbin. A thread Y, drawn up while a balloon is restricted by the first balloon restricting member 35, becomes a stable small balloon via the contraction 36a to reach the upper mouth port 20.