Sheet-processing machine
AssigneeBobst SA
InventorJean-Claude Rebeaud
Life of this patent
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Abstract
A sheet-processing machine operating in cycles, inter alia a shaping press, during which a cyclic excess air pressure is produced in a covered part of the machine, where the covered part has an opening (6) on the perimeter of which a diaphragm is fixed, the diaphragm being made of an elastic material which is substantially impermeable and resistant to the oil lubricating the machine (9). The diaphragm can be a fabric (3) substantially permeable to air and stretched on a frame (2) surrounding the opening (6).
Claims8
A machine for processing sheets and operating in cycles during which a moving part of the machine produces a cyclic excess pressure of air in a covered part of the machine, wherein the body of the covered part has an opening on the perimeter of which a diaphragm is fixed, the diaphragm being made of an elastic material which is substantially impermeable and resistant to products for lubricating the said part of the machine.
Dependencies are inferred from the claim text.