Control system for textile tenter frame

Details Control system for textile tenter frame Control system for textile tenter frame

1975-04-11

1977-04-12

Morrison, Malcolm A.

Registers

Transfer mechanism

Traveling pawl

26 515, 26 86, D06C 300

Patent

active

040177220

ABSTRACT:
A method and apparatus for controlling the yield of fabric material from a tenter frame having spaced apart belts driven by drive means and an overfeed roll at its entry end. In a start-up or style change mode of operation a predicted dry yield is computed from data signals received before the fabric enters the tenter frame, then compared with a target value to produce a control signal to the overspeed roll. In the steady state mode of operation, actual yield is computed from data taken at the output end of the tenter frame; then is compared with a target yield value and thereafter modified by a correction factor proportional to variations in predicted dry yield computed from inputs taken at the entry to the tenter frame; the modified control signal again being applied to the overspeed roll.

REFERENCES:
patent: 2466446 (1949-04-01), Laurie
patent: 3021607 (1962-02-01), Fleissner
patent: 3619360 (1971-11-01), Persik, Jr.
patent: 3641349 (1972-02-01), Dahlin
patent: 3649444 (1972-03-01), Futch, Jr.
patent: 3721809 (1973-03-01), Strandberg, Jr. et al.
patent: 3757122 (1973-09-01), Bossen et al.
patent: 3801252 (1974-04-01), Waterhouse
patent: 3814914 (1974-06-01), List et al.
patent: 3857023 (1974-12-01), McCall

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