Method and device for controlling valve units
AssigneeHeidelberger Druckmaschinen AG
InventorJurgen Zeltner
Life of this patent
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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.
Claims12
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, which comprises driving the rotatable inner part of the valve unit at a given rotary speed and superimposing an adjusting speed directly on the given rotary speed.
Device 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 respectively 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 repeatable at a frequency variable between a minimum cycle frequency and a maximum cycle frequency, comprising a mechanism for superimposing a further speed on a given rotary speed of the inner part which is dependent upon the machine speed.
In combination with a sheet-processing machine with at least one of positive pressure and negative pressure consumers, a source of positive pressure and negative pressure, a device for controlling a valve unit having a rotatable inner part and a rigidly disposed outer part, by which the at least one of positive pressure and negative-pressure consumers of the sheet-processing machine is respectively connectible to and disconnectible from the source of positive pressure and negative pressure, respectively, in accordance with an operating cycle of the sheet-processing machine, the operating cycle being repeatable at a frequency variable between a minimum cycle frequency and a maximum cycle frequency, comprising a mechanism for superimposing a further speed on a rotary speed of the inner part which is dependent upon the machine speed.
Dependencies are inferred from the claim text.