Open-end spinning machine for producing cross-wound bobbins

Details Open-end spinning machine for producing cross-wound bobbins Open-end spinning machine for producing cross-wound bobbins

1994-04-22

1995-12-12

Stryjewski, William

Textiles: spinning, twisting, and twining

Apparatus and processes

Piecing up

57261, 57269, D01H 1326, D01H 910

Patent

active

054738792

ABSTRACT:
An open-end spinning machine embodied as a yarn piecing unit for automatically repairing yarn breaks during bobbin winding and for replacing finished bobbins with empty tubes, and an auxiliary yarn transport arrangement for supplying and removing an auxiliary yarn used for the piecing operation. The auxiliary yarn transport arrangement has a yarn supply tube that can be positioned among various operating positions: (a) a first position wherein the auxiliary yarn is transferred to a yarn locating nozzle of the piecing unit; (b) a second operating position wherein the piecing cycle is initiated by spinning an end of the auxiliary yarn with individual fibers fed into the spinning rotor of the spinning machine; and (c) a third operating position wherein the auxiliary yarn and its pieced end is severed from the trailing length of newly spun yarn from the spinning rotor and the new yarn is applied to an empty tube in the winding creel of the spinning machine.

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