Method and apparatus for controlling a thread-joining operation

Details Method and apparatus for controlling a thread-joining operation Method and apparatus for controlling a thread-joining operation

1977-02-14

1978-07-25

Queisser, Richard C.

Textiles: spinning, twisting, and twining

Apparatus and processes

Web material

57 5895, 57156, D01H 1500, D01H 1332

Patent

active

041021169

ABSTRACT:
Method of controlling a thread-joining operation in a rotor-spinning machine having a rotor formed with a fiber-collecting channel, wherein a pulse proportional to the rotary speed of the rotor is applied to control a measure of the material being processed in the spinning operation which includes automatically controlling advance feeding into the rotor of a quantity of fiber required for thread-joining and feeding the fiber beginning with withdrawal of a thread formed for the fiber as well as returning into the rotor the thread end to be joined and withdrawing the joined thread from the rotor during start-up of the rotor, the automatic control being in accordance with a quantity proportional to the peripheral velocity of the fiber-collecting channel of the rotor serving as control input variable for at least one of the fiber feed, the thread withdrawal, the beginning of the advance feeding and the beginning of the returning of the thread end, and device for carrying out the method.

REFERENCES:
patent: 3704579 (1972-12-01), Tooka et al.
patent: 3760576 (1973-09-01), Le Chatelier et al.
patent: 3780513 (1973-12-01), Wanatabe et al.
patent: 3878671 (1975-04-01), Seidl et al.
patent: 3987610 (1976-10-01), Stahlecker et al.

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