Variable size folder cylinder

Details Variable size folder cylinder Variable size folder cylinder

1981-06-26

1983-04-19

Heinz, A. J.

Manufacturing container or tube from paper; or other manufacturi

Bending

Folding

493432, B65H 4516

Patent

active

043804497

ABSTRACT:
A variable size folder cylinder for a web-fed rotary printing machine is disclosed. Spaced inner support wheels and spaced outer support wheels are carried by a common shaft. The inner and outer wheels serve as support for sheet grippers, folding blades and the like. The inner wheels and outer wheels are rotatable on the shaft with respect to each other so that the elements which they carry can be variably spaced about the periphery of the folder cylinder. A clutch assembly is carried by adjacent ones of these inner and outer support wheels with the clutch including a ring-shaped piston that carries a coupling ring which is brought into engagement with a thrust collar. A flexible membrane return ring is sealed between the ring-shaped piston and the face of the surrounding wall of the support wheel and acts to return the piston its rest position when actuating pressure is removed.

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