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STOPPING METHOD FOR YARN STREAK REWINDING MACHINE
STOPPING METHOD FOR YARN STREAK REWINDING MACHINE
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机译：纱条复卷机的停机方法
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摘要
PURPOSE:To surely decrease mechanical vibration at the time of stopping by comparing a rotary speed of a bobbin holder during deceleration with a natural frequency corresponding to a package diameter and two-point supporting the bobbin holder before its speed reaches this natural frequency. CONSTITUTION:When assumed d, D for diameters of a touch roller 10 and bobbin holders 5, 6 before rotating a turret disk, the package diameter D is calculated in a block 40 from rotary speeds Nt, Nb of the roller 10 and the holders 5, 6 by sensors 44, 45. A natural frequency of the holders 5, 6 is changed into a low natural frequency with an increase of the package diameter, and a function F=f(D) can be obtained, when it is left as input previously to a computer, a natural frequency F to be avoided is calculated in a block 41. A natural frequency Fc, in which the holder must be two-point supported before the natural frequency F by a frequency alpha, is calculated in a block 42, and a rotary frequency Fx of the holders 5, 6 is compared with the natural frequency Fc in a block 43, when the frequencies are in agreement, a piston rod 16 is extended to perform two-point supporting.
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