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US 6,283,906 B1Granted
Folding jaws cylinder
AssigneeKoenig & Bauer Aktiengesellschaft
InventorSimon Kostiza
Life of this patent
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Abstract
A folding jaw cylinder utilizes folding jaw pairs that automatically adjust the folding gap between the two jaws in each pair in response to the thickness of the folded product. A dual working chamber piston-cylinder unit is placed between first and second rotational carriers of the folding jaw members. One of the chambers is filled with liquid and is linked to a hydraulic accumulator by ways of a flow control valve. The second chamber is provided with compressed air.
Claims7
A folding jaw cylinder comprising:
- at least one folding jaw having first and second folding jaw elements, said folding jaw elements defining a folding jaw gap;
- means supporting said first and second folding jaw elements on the folding jaw cylinder for movement relative to each other to vary said folding jaw gap;
- and
- means for automatically adjusting said folding jaw gap between said first and second folding jaw elements, said means including at least one working cylinder, said at least one working cylinder having a first chamber connected to an energy accumulator, and means to supply a first pressure medium to said first chamber and to remove the first pressure medium from said first chamber at different amounts per unit of time.
1 more element
Dependencies are inferred from the claim text.