Sheet feeding or delivering – Delivering – By pneumatic conveyor
Patent
1982-07-27
1985-01-01
Stoner, Jr., Bruce H.
Sheet feeding or delivering
Delivering
By pneumatic conveyor
271185, 271196, 271227, 271236, 271251, 355 73, 198689, 248363, B65H 2924, B65H 902
Patent
active
044913133
ABSTRACT:
The present invention relates to a suction device for securely holding printing plates in a processing position by sub-atmospheric pressure. The suction device comprises a turnstile arrangement with four suction tables in two mutually perpendicular planes and is connected to a motor which rotates the turnstile arrangement in 90.degree. steps. Four suction chambers are located in a hub part of the turnstile arrangement, these chambers being connected, via pressure lines, to a vacuum source for generating sub-atmospheric pressure. The supporting surface of each suction table comprises suction slots, which communicate in pairs, each of these communicating pairs of suction slots being connected to the associated suction chamber via a common suction passage. Each suction chamber comprises a piston with its piston rod being guided outwardly through an end face of the hub part and carrying a circular plate. The inner surface of this plate bears partly against the outside surface and against the inner edge of a stationary radial cam-plate.
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Barlow James E.
Hoechst Aktiengesellschaft
Stoner Jr. Bruce H.
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