Browse Prior Art Database

Device For Separating And Carrying Off Sheets

IP.com Disclosure Number: IPCOM000098103D
Original Publication Date: 1960-Feb-01
Included in the Prior Art Database: 2005-Mar-07
Document File: 2 page(s) / 42K

Publishing Venue

IBM

Related People

Gutteling, J: AUTHOR

Abstract

The device uses vacuum chambers with rotating wheels projecting through guide plates for separating and carrying off sheets from a stack.

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Device For Separating And Carrying Off Sheets

The device uses vacuum chambers with rotating wheels projecting through guide plates for separating and carrying off sheets from a stack.

By means of the vacuum acting through openings 4 in hollow rotating wheels 5 of a vacuum chamber I opposite the stack, the top sheet 6 is drawn up from the stack and transported to a pair of vacuum chambers 2 and 3 opposite one another. The vacuum chamber 1 is oblique to the transport direction to facilitate alignment of the sheets along guide 7. The wheels 8 of the top chamber 2, together with the vacuum, act to advance the top sheet 6, while the counter rotating wheels of the lower chamber 3, together with the vacuum, check the movement of the lower sheets. The vacuum chambers comprise an enclosed cavity connected to a vacuum source and enclosed by guide plates 9 through which the rims of the rotating wheels project.

The conveying of the sheets is initiated by action of atmospheric pressure which, due to the vacuum acting through the small clearance gap around the rotating wheels 5, pushes the sheet against the wheels. This conveying action is aided by providing two air nozzles 10 and 11, one transverse to the transport direction and the other transverse to the first chamber. The nozzles 10 and 11 are preferably moved up and down to create a turbulence about the topmost sheets to facilitate separation of the sheets. The top sheet is moved forward by the friction between the wheels...