Roller drive for draw frame

Details Roller drive for draw frame Roller drive for draw frame

1980-03-24

1982-02-09

Rimrodt, Louis

Textiles: fiber preparation

Working

Drafting

57 92, 57100, 74665G, D01H 122

Patent

active

043143881

ABSTRACT:
An assembly of fiber-drawing rollers, used for stretching rovings or fiber bundles in a spinning machine, is divided into a plurality of stages each including an elongate driven roller and a set of coacting counterrollers, the driven rollers being rotated at predetermined relative speeds with the aid of several motors including at least one pair of synchronous motors positively coupled with a drawing roller at opposite ends thereof. These synchronous motors are energized with three-phase current of a frequency determined by the setting of a digitally adjustable frequency selector controlling a solid-state frequency inverter. The selector comprises a frequency divider in the output of a preferably also adjustable source of timing signals which may be a pulse generator driven by a motor coupled with another drawing roller.

REFERENCES:
patent: 2875645 (1959-03-01), Keyser
patent: 4161862 (1979-07-01), Hartmannsgruber et al.
patent: 4195389 (1980-04-01), Schulz et al.
"Textile Applications of Adjustable-Frequency Drives with Digital Ratio Control", by Edward H. Dinger, IEEE Transaction of Industry Applications, vol. IA-8, Jan.-Feb. 1972.

Affiliated with

Also associated with

Rating

Roller drive for draw frame does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Roller drive for draw frame, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Roller drive for draw frame will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1255531