Cotton drafting frame

Details Cotton drafting frame Cotton drafting frame

1992-12-08

1995-08-08

Nerbun, Peter

Textiles: fiber preparation

Working

Drafting

19258, 19260, D01H 518

Patent

active

054387337

ABSTRACT:
A drafting frame includes first and second drafting roll pairs being spaced from one another consecutively in the direction of sliver advance and each being formed of two cooperating drafting rolls; first and second drive motors; a first torque transmitting arrangement connected to the first drive motor and to one of the drafting rolls of the first drafting roll pair for driving the first drafting roll pair in a forward sense for feeding the sliver in the direction of advance; a second torque transmitting arrangement connected to the second drive motor and to one of the drafting rolls of the second drafting roll pair for driving the second drafting roll pair in a forward sense for feeding the sliver in the direction of advance; an electronic regulating arrangement for regulating an rpm of at least one of the two drive motors for equalizing irregularities of the sliver; a first freewheel backstop for preventing a rotation of the first drafting roll pair in a reverse sense; and a second freewheel backstop for preventing a rotation of the second drafting roll pair in a reverse sense.

REFERENCES:
patent: 2812553 (1957-11-01), Coulliette
patent: 2895178 (1959-07-01), Sauvage
patent: 4195389 (1980-04-01), Schulz et al.
patent: 4266324 (1981-05-01), Hasegawa et al.
patent: 4332059 (1982-06-01), Bischofberger et al.
patent: 4480355 (1984-11-01), Vignon et al.
patent: 4561152 (1985-12-01), Niimi et al.
patent: 4987734 (1991-01-01), Meyer
patent: 5161284 (1992-11-01), Leifeld
Wegener, "Die Streckwerke der Spinnereimaschinen", Springer-Verlag, 1965, pp. 423, 424.
Beitz et al, Dubbel, Taschenbuch fur den Maschinenbau, 14th Ed., Springer-Verlag, 1981, p. 414.
Homburg, "Sinus-Former", Industrie Elektrik+Elektronik 33, 1988, No. 4, pp. 103, 104.
Achenbach, "Hat sich gemausert", Elektrotechnik 73, vol. 1/2, Feb. 1991, pp. 28-30, 33.

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