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    • 7. 发明公开
    • DEVICE AND METHOD FOR THE CONSTANT TENSION FEEDING OF THREADS OR YARNS FED IN A DISCONTINUOUS WAY
    • 装置及方法恒张力BROKEN或喂养捻加工纱
    • EP2262940A1
    • 2010-12-22
    • EP09719529.1
    • 2009-03-09
    • B.T.S.R. International S.p.A.
    • BAREA, Tiziano
    • D04B15/48
    • D04B15/48
    • A device for the constant tension feeding of threads or yarns fed to a textile machine or a winding machine or similar machine working on a metallic wire, for producing a manufactured product or for processing the thread (8), said feeding taking place in a discontinuous way that is with phase sequences wherein the thread motion takes place with at least a first and at least a second feeding or absorption state by the machine different therebetween, said states following each other in time, as tension detecting means (3), thread accumulating means (4) and control means (40) connected to said detecting means (3) and accumulators (4) are provided and apt to intervene on the latter based upon a tension value obtained from said detecting means; compensating means (11) is provided, arranged between said accumulating means (4) and said tension detecting means (3) apt to cooperate with such thread (8) so as to compensate a variation of the feeding or absorption state of the latter upon the passage between each first and each second feeding or absorption state following the first one, this allowing the control means (40) to intervene onto the accumulating means (4) in order to modify the action thereof onto the thread and to keep constant in time the tension value detected by the detecting means (3) at a set value, said constant tension value being kept also during the changing phase of the feeding state thanks to the interaction between said thread and said compensating means (11), the latter being able to move freely under the action of the thread with respect to a resting position (PB).