Control device for the pneumatic product tensioning and transpor

Details Control device for the pneumatic product tensioning and transpor Control device for the pneumatic product tensioning and transpor

1986-10-07

1988-09-27

Feldbaum, Ronald

Textiles: knitting

Fabric manipulation

Take-ups

D04B 1588

Patent

active

047732377

ABSTRACT:
The control device comprises a switching valve acting on the pneumatic circuit for passing from a first tensioning phase to a second transport phase and vice versa, and a step motor operated by an electronic machine control member and operatively connected to the cutoff element of the switching valve. The step motor allows to perform, according to a preset program, the passage from the first phase to the second phase and vice versa, and to achieve, at least in the first phase, a choking of the flow which crosses the switching valve to adjust the tension to which the product is subject.

REFERENCES:
patent: 3063275 (1962-11-01), Luchi
patent: 3282531 (1966-11-01), Stewart
patent: 3738123 (1973-06-01), Mazzi
patent: 3841112 (1974-10-01), Uhlir et al.
patent: 4541351 (1985-09-01), Horita et al.
patent: 4576019 (1986-03-01), Keel et al.

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