Rotary drum for processing sheet materials

Details Rotary drum for processing sheet materials Rotary drum for processing sheet materials

1982-08-23

1984-03-20

Schacher, Richard A.

Sheet feeding or delivering

Feeding

By means to convey sheet

271196, B65H 2932

Patent

active

044376596

ABSTRACT:
A low inertia rotary drum supports flexible sheets of different sizes for transport and processing. A plurality of slots are disposed on the surface of the drum. The slots are configured in spaced relation along the longitudinal and circumferential dimension of the drum. A plurality of holes or communicating ports are disposed in the slots. The holes interconnect the interior of the drum with the surface. The number of holes varies circumferentially and longitudinally. A vacuum system having a relatively low vacuum and a relatively high flow rate is coupled to the interior of the drum. Sheets are loaded onto the drum so that a minimum number of holes are vented to the atmosphere.

REFERENCES:
patent: 4145040 (1979-03-01), Huber
patent: 4234305 (1980-11-01), Miyake
IBM Technical Disclosure Bulletin, vol. 19, No. 5, Oct. 1976, "Vacuum Transport Drum", by R. M. Glowa et al., pp. 1645-1646.

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