Pick spacing controlling device and method

Details Pick spacing controlling device and method Pick spacing controlling device and method

1986-09-11

1987-12-15

Jaudon, Henry S.

Textiles: weaving

Fabric manipulation

Take-ups

139 97, D03D 4920

Patent

active

047125888

ABSTRACT:
A pick spacing controlling device of the digital system for controlling the pick spacing of a fabric being woven on a loom having a main motor for driving the principal weaving mechanism of the loom, and a take-up motor for driving the take-up roller of the loom by controlling the output rotation amount of the take-up motor so that the output rotation amount of the take-up motor varies in direct proportion to that of the main motor or that of the principal part of the loom. The output rotation amount of the take-up motor and that of the main motor or the rotation amount of the principal part of the loom are detected by encoders. An arithmetic unit processes pulse-number modulated input signals corresponding to the output pulse signals of the encoders to obtain the difference between the pulse-number modulated input signals in the number of pulses, and then a driving actuator drives the take-up motor so that the difference is reduced to zero.

REFERENCES:
patent: 4430870 (1984-02-01), Winter et al.
patent: 4605044 (1986-08-01), Sakamo
patent: 4619294 (1986-10-01), Sainen et al.
patent: 4628967 (1986-12-01), Osterle et al.

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