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US 4,938,131 AGranted
Clamp device for the cylinder wiper blade in a rotogravure printing machine
AssigneeSchiavi Cesare Costruzioni Meccaniche S.p.A.
InventorLuigi Maggi
Life of this patent
Estimating the term…
Abstract
The invention relates to the art field of rotary printing machines, and concerns a doctor blade clamp device in the form of a bar with a longitudinal chase that accommodates a pressure plate; the plate is urged against the blade by pressure applied through a reservoir embodied as a hollow flexible sheath, likewise accommodated by the chase, which connects with a supply of pressurized fluid and is made to expand by the operation of a suitable valve.
Claims7
A device for clamping the cylinder wiper blade in rotogravure printing machines, comprising:
- a bar having a longitudinal chase;
- a back-up iron facing said wiper blade;
- a pressure plate urging against said back-up iron facing said wiper blade;
- a sheath reservoir formed by a flexible sheath lodged between said pressure plate and one wall of said longitudinal chase;
- and
- means for selectively directing a pressurized fluid into said sheath reservoir so as to selectively expand said flexible sheath and cause said pressure plate to apply a constant clamping action against said back-up iron along the entire length of said wiper blade, and for selectively exhausting said pressurized fluid out from said sheath reservoir so as to release said wiper blade from said pressure plate and said back-up iron to permit wiper blade disassembly and/or replacement.
3 more elements
Dependencies are inferred from the claim text.