Textiles: fiber preparation – Working – Drafting
Patent
1982-09-21
1984-10-02
Rimrodt, Louis
Textiles: fiber preparation
Working
Drafting
19240, 19293, 19300, 364470, D01H 542
Patent
active
044739249
ABSTRACT:
A draw frame of a sliver-drafting apparatus has three cascaded roller pairs whose lower rollers are driven by respective motors at speeds determined by associated frequency dividers and/or multipliers in the output of a common oscillator of adjustable operating frequency. The slivers drafted by the roller pairs form, after doubling or plying, a fiber bundle traversing a thickness sensor whose output, integrated over predetermined time periods, is used by a microcomputer to ascertain optimum nip-line spacings and contact pressures reducing the thickness variations to a minimum. These parameters can be varied by horizontal slides supporting the roller pairs and spring-loaded blocks acting upon the shafts of the upper rollers; the positions of the slides and the pressures of the loading springs are adjustable by servomotors, under the control of the microcomputer, on the basis of a running-in program in which different combinations of values for the spacings and the pressures are successively set up and the combinations yielding the highest degree of uniformity are subsequently re-established.
REFERENCES:
patent: 3435673 (1969-04-01), Felix
patent: 4137487 (1979-01-01), Niestroj et al.
patent: 4161862 (1979-07-01), Hartmannsgruber et al.
patent: 4199844 (1980-04-01), Goetzinger
patent: 4271565 (1981-06-01), Grunder
patent: 4306450 (1981-12-01), Moser
patent: 4314388 (1982-02-01), Hartmannsgruber et al.
patent: 4336684 (1982-06-01), Hartmannsgruber et al.
Guttler Hermann
Hartmannsgruber Max
Kriechbaum Kurt
Schulz Gunter
Rimrodt Louis
Ross Karl F.
Zinser Textilmaschinen GmbH
LandOfFree
Means for controlling fiber-drawing apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Means for controlling fiber-drawing apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Means for controlling fiber-drawing apparatus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-520828