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US 6,349,930 B1Granted
Lifting sucker and method of operating a lifting sucker
AssigneeHeidelberger Druckmaschinen AG
InventorsMichael Krüger, Bernhard Wagensommer
Life of this patent
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Abstract
A method of operating a lifting sucker which takes sheets off a pile, the sheets being picked up and lifted by suction, which comprises determining at least one of the physical variables characterizing the method and comparing it with an associated desired value, and initiating countermeasures if there are any deviations from the desired value; and a lifting device operated by the method.
Claims27
A method of operating a lifting sucker for taking a sheet off of a pile, which comprises:
- determining at least one physical variable that characterizes an operation of lifting a sheet off of a sheet pile, the at least one physical variable defining a determined physical variable;
- comparing the determined physical variable with a desired value of the physical variable to obtain an amount of a deviation of the determined physical variable from the desired value of the physical variable;
- initiating countermeasures if the amount of the deviation is not acceptable;
- and
- using a lifting sucker to lift the sheet of off the sheet pile if the amount of the deviation is acceptable.
2 more elements
A lifting sucker, comprising:
- a suction air source;
- a device for performing a lifting movement;
- at least one device for measuring a physical variable characterizing an operation for lifting a sheet off of a sheet pile, the physical variable defining a measured physical variable;
- a control device constructed to determine a deviation between the measured physical value and a desired physical value and to initiate countermeasures if the deviation is unacceptable.
1 more element
Dependencies are inferred from the claim text.