Method for piecing rovings and exchange roving bobbins in a ring

Details Method for piecing rovings and exchange roving bobbins in a ring Method for piecing rovings and exchange roving bobbins in a ring

1987-08-25

1989-01-24

Petrakes, John

Textiles: spinning, twisting, and twining

Apparatus and processes

Package handling

57 90, 57261, 57268, 57276, D01H 918, D01H 910, D01H 1500

Patent

active

047993537

ABSTRACT:
A method and apparatus for piecing rovings introduced from almost exhausted roving bobbins suspended by two rows of bobbin hangers mounted on a creel of a conventional ring spinning frame provided with a roving bobbin supply rail disposed in front of the creel, with rovings introduced from full packaged roving bobbins previously carried to the respective supply positions of the supply rail, said for exchanging the almost exhausted roving bobbins for the full packaged roving bobbins. A piecing rovings operation is carried out for each pair of almost exhausted roving bobbins suspended by a front row bobbin hanger and a back row bobbin hanger of the creel, facing each other, together with two corresponding adjacent full packaged roving bobbins of the supply rail, respectively. A roving bobbin exchanging operation is carried out for each pair of almost exhausted roving bobbins having completed the roving piecing operation for corresponding full packaged roving bobbins of the supply rail having completed the roving piecing operation. The roving bobbin exchanging operation and the roving piecing operation are performed in parallel and at the same time.

REFERENCES:
patent: 3773191 (1973-11-01), Ishida
patent: 4438622 (1984-03-01), Pons
patent: 4473997 (1984-10-01), Kawasaki et al.
patent: 4583358 (1986-04-01), Krieger et al.
patent: 4630435 (1986-12-01), Igel

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