Apparatus and method for in-register feeding of sheets

Details Apparatus and method for in-register feeding of sheets Apparatus and method for in-register feeding of sheets

1984-03-26

1986-05-27

Stoner, Jr., Bruce H.

Sheet feeding or delivering

Feeding

With means to align sheet

271236, 271241, 271250, B65H 910, B65H 906, B65H 920

Patent

active

045911436

ABSTRACT:
An apparatus for in-register feeding a sheet into a sheet-processing machine by conveying the sheet in a given feed direction over a feed table includes front lays engageably by a leading edge of the sheet for aligning the leading edge of the sheet, a pair of said pull-type lays located in the feed table respectively on mutually opposite operator and drive sides of the feed table at a slight spacing from the front lays, both the side lays being movable in the plane of the feed table transversely to the given feed direction of the sheet, a device for driving at least one of the side lays, a device for positioning the sheet having at least one sensor for controlling a displacement stroke of the driven side lay, an air control device connected to a vacuum generator and to both of the side lays for controlling suction air flow to the side lays, at least one of the side lays having a device for applying suction to the sheet until static friction is assured preparatory to aligning a respective lateral edge of the sheet, and a method for carrying out the operation.

REFERENCES:
patent: 3743277 (1973-07-01), Bolza-Schunemann et al.
patent: 4060237 (1977-11-01), Degen et al.
patent: 4184673 (1980-01-01), Weisbach

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