Method and device for controlling valve units

Details Method and device for controlling valve units Method and device for controlling valve units

1996-04-01

1997-11-11

Milef, Boris

Sheet feeding or delivering

Feeding

Separators

271 98, 271105, 25112913, 251294, B65H 308

Patent

active

056855346

ABSTRACT:
Method for controlling a valve unit having a rotatable inner part, by which at least one of positive pressure and negative-pressure consumers of a sheet-processing machine is connectible to and disconnectible from a source of positive pressure and negative pressure, respectively, in accordance with an operating cycle of the sheet-processing machine, the operating cycle being repeated at a frequency variable between a minimum cycle frequency and a maximum cycle frequency, includes superimposing an adjusting speed on a rotary speed of the rotatable inner part of the valve unit; and device for performing the method.

REFERENCES:
patent: 3069025 (1962-12-01), Winkler et al.
patent: 3761077 (1973-09-01), Vollrath et al.
patent: 4162066 (1979-07-01), McCain et al.
patent: 5480137 (1996-01-01), Haupenthal

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