| 摘要 |
An electronic device for delivering yarn to textile machines comprising a motor ( 1 ), and an electronic control board ( 2 ), which includes a microcontroller, able to control the rotating speed of the motor ( 1 ) and the currents in the phases of said motor ( 1 ); the device has the purpose of adjusting the delivery of each thread ( 11 ), by varying the rotating speed of the motor ( 1 ), so as to maintain it as synchronised as possible, according to an adjustable scale factor, with the speed of the textile machine served; the device also stops and starts up when the machine is working, so that the rotating speed of the motor ( 1 ) is synchronised with the motion of the thread-tighteners (if textile machines equipped with striping devices having a set of thread-tightener for each knitting station are provided, in which a set of threads of different colours and materials are provided at each drop, according to a prefixed and programmed sequence).
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