Drawing unit for a fiber processing machine particularly a regul

Details Drawing unit for a fiber processing machine particularly a regul Drawing unit for a fiber processing machine particularly a regul

1997-10-24

1999-11-30

Neas, Michael A.

Textiles: fiber preparation

Working

Drafting

19 02, 19 022, 19258, D01H 500

Patent

active

059919779

ABSTRACT:
A drawing unit for drawing sliver includes first and second drawing roll pairs being spaced from one another in the direction of sliver advance. One drawing roll in each drawing roll pair is a driven roll. There are further provided first and second drive motors; a first torque-transmitting device connected to the first drive motor and to the driven roll of the first drawing roll pair for driving the first drawing roll pair in a forward sense for feeding the sliver; a second torque-transmitting device connected to the second drive motor and to the driven roll of the second drawing roll pair for driving the second drawing roll pair in a forward sense for feeding the sliver; an electronic control and regulating device connected to the first and second drive motors; a freewheel backstop operatively connected to the driven roll of the first roll pair for preventing rotation thereof in a reverse sense; and an incremental rotary path indicator coupled to the driven roll of the second roll pair for generating signals representing rotary data of the driven roll of the second roll pair.

REFERENCES:
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patent: 5438733 (1995-08-01), Melcher et al.
patent: 5473913 (1995-12-01), Bogucki-Land
patent: 5803682 (1998-09-01), Henzler et al.
Korber et al, "Ein Regler fur drei Systeme [A Regulator for Three System"], elektro Automation 48, No. 9, Sep. 1995 issue, pp. 60, 61.
Homburg et al, "Freie Geberwahl bei Antriebsregelungen" ["Free Transmitter Selection in Drive Regulations"], Steuern und Regeln issue of Dec. 1995, pp. 1755, 1756.

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