Process to ensure precise autolevelling for the drafting of a fi

Details Process to ensure precise autolevelling for the drafting of a fi Process to ensure precise autolevelling for the drafting of a fi

1996-08-09

1998-02-03

Neas, Michael A.

Textiles: fiber preparation

Working

Drafting

19 23, 36447014, D01H 538

Patent

active

057131066

ABSTRACT:
The invention relates to a process to ensure precise autolevelling for the drafting of a fiber structure in a pre-spinning machine, whereby an open control circuit controls the drafting of the fiber sliver through the drafting rollers, whereby the fiber structure is clampingly held between drafting roller pairs and sensing roller pair during stoppage, whereby a pulse generator is able to produce impulses for the rotation of a pair of sensing rollers which are transmitted to an electronic memory during stoppage of the drafting equipment, and whereby the association of data and momentary position of the sliver events is maintained in the electronic memory during stoppage of the drafting equipment.
During stoppage each impulse of the pulse generator is detected and evaluated by means of an electronic system (13, 15, 23) on the connection between pulse generator (4, 14, 19, 22) and electronic memory (3, 18, 26).

REFERENCES:
patent: 4369550 (1983-01-01), Meile
patent: 4812993 (1989-03-01), Konig et al.
patent: 5003668 (1991-04-01), Meyer
patent: 5438733 (1995-08-01), Melcher et al.
patent: 5463556 (1995-10-01), Denz
patent: 5583781 (1996-12-01), Denz et al.
New Regulating Concept for Short-Staple Spinning, Melliand Textilberichte, Feb. 1985, Dipl.Ing W. Friebel und Dr.Ing. Burkhard Wulfhorst.
Modern Machines for Preparatory Operations for Spinning, Melliand Textilberichte, Dec. 1985.
Drawframe Prospectus With Translation.

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