Stepping motor arrangement for driving a silver feed roller in a

Details Stepping motor arrangement for driving a silver feed roller in a Stepping motor arrangement for driving a silver feed roller in a

1994-03-21

1996-04-23

Stryjewski, William

Textiles: spinning, twisting, and twining

Apparatus and processes

Piecing up

57 92, 57 93, 57100, 57264, 57408, 57412, D01H 1326, D01H 746

Patent

active

055092616

ABSTRACT:
A rotor spinning machine has a plurality of simultaneously operated spinning stations each with a spinning rotor, an opening roller, a feed roller for delivering sliver to the opening roller, and a stepping motor connect directly to the feed roller for driving thereof. An actuating arrangement is provided for selectively actuating each stepping motor in a normal increment mode during spinning operation and in a microincrement mode during yarn piecing operations.

REFERENCES:
patent: 4125991 (1978-11-01), Stahlecker
patent: 4327546 (1982-05-01), Derichs et al.
patent: 4672802 (1987-06-01), Raasch
patent: 4897993 (1990-02-01), Raasch et al.
"Elektronische OE-Effektgarneinrichtung", Chemiefasem/Textilindustrie, 41/93, Jahrgang, Apr. 1991, p. 347.
"Elektronisches Garnueberwachungssystem Corolab fuer Rotor-Spinn-spulautomaten Autocoro", Chemiefasern/Textilindustrie, 40/92, Jahrang, Apr. 1990, pp. 356 and 358.

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