Drawing mechanism for drawing textile fibers

Details Drawing mechanism for drawing textile fibers Drawing mechanism for drawing textile fibers

1989-03-10

1991-03-19

Schroeder, Werner H.

Textiles: fiber preparation

Working

Drafting

19258, 19272, 19288, D01H 546

Patent

active

049998846

ABSTRACT:
The drawing mechanism for drawing textile fibers includes an input nip between a first pressure roller (6) and a first drafting roller (1), a first intermediate nip between a second pressure roller (7) and a second drafting roller (2), and an output nip between a third pressure roller (8) and a third drafting roller (3). Two additional nips are formed between a fourth and a fifth pressure rollers (9, 10) and the second drafting roller. A second intermediate nip is formed between a sixth pressure roller (11) and the second drafting roller (2). If the treated fibers are short, the draft occurs between the input nip (6 - 1) and the first intermediate nip (9 - 2), and between the second intermediate nip (10 - 2) and the output nip (8 - 3). If the fibers are long, pressure on the fourth and fifth pressure rollers (9, 10) is reduced. The draft zones then extend to the intermediate nips (7 - 2, 11 - 2). In this manner an adaptation to different fiber lengths is possible without alteration of the roller distances. .

REFERENCES:
patent: 2813309 (1957-11-01), West et al.
patent: 2815538 (1957-12-01), Schussler et al.
patent: 2890495 (1959-06-01), Miesch et al.
patent: 3303534 (1967-02-01), Andreani
patent: 3304584 (1967-02-01), West et al.
patent: 4413378 (1983-11-01), Mandl et al.
patent: 4510648 (1985-04-01), Mori et al.
patent: 4512061 (1985-04-01), Hartsmannsgruber et al.

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