Method and apparatus for detecting mechanical roll imperfections

Details Method and apparatus for detecting mechanical roll imperfections Method and apparatus for detecting mechanical roll imperfections

1988-09-09

1991-04-23

Lall, Parshotam S.

Boots, shoes, and leggings

364471, 364570, 340675, 73159, 19239, 19258, G01N 2782, B21B 3700

Patent

active

050104942

ABSTRACT:
A drawframe is disclosed which has a plurality of sets of draw rolls and includes a provision for the early detection of imperfections in rotating elements in the drawframe. The separation of the pairs of rolls is monitored, and a signal representative of that separation is generated. The resulting signal is then processed so that only intolerable errors remain, and the major harmonic elements of the remaining signal are correlated with the rotational frequencies of the rotating elements of the drafting or drawing apparatus. Establishment of synchronism between significant harmonic components in the signal representative of the separation of the cooperating pair of rolls and the rotational frequency of a rotating element in the apparatus makes it possible to identify any unacceptable mechanical cause of error while the machine is still running.

REFERENCES:
patent: 2891287 (1959-06-01), Raper
patent: 2905976 (1959-01-01), Matthew et al.
patent: 3087204 (1963-04-01), Catling
patent: 3088175 (1963-05-01), Aoki
patent: 3305688 (1967-02-01), Lamparter
patent: 3384933 (1968-05-01), Yamamoto et al.
patent: 3444594 (1969-05-01), Whitehurst
patent: 3822590 (1974-07-01), Tharpe et al.
patent: 4100649 (1978-07-01), Erismann et al.
patent: 4267620 (1981-05-01), Allen, Jr.
patent: 4302968 (1981-12-01), Moser
patent: 4473924 (1984-10-01), Hartmannsgruber et al.
patent: 4495587 (1985-01-01), Plante et al.
patent: 4496056 (1985-01-01), Schoenig, Jr.; et al.
patent: 4506414 (1985-03-01), Krieger
patent: 4521859 (1985-06-01), Fapiano
patent: 4646387 (1987-03-01), Oswald et al.
patent: 4653153 (1987-03-01), Felix et al.
patent: 4776192 (1988-10-01), Oda et al.
patent: 4805492 (1989-02-01), Tsurdua
patent: 4819181 (1989-04-01), Tornblum

Affiliated with

Also associated with

Rating

Method and apparatus for detecting mechanical roll imperfections does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and apparatus for detecting mechanical roll imperfections, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for detecting mechanical roll imperfections will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1625608