Suction tape conveyor table
First Claim
1. Device for conveying a stream of sheets to a sheet-processing machine, comprising:
- a conveyor table with endless transport tapes formed with through-holes and drivable around said conveyor table, said transport tapes having an underside and said conveyor table having suction openings formed therein;
a suction box disposed below said conveyor table and connected with said underside of said transport tapes via said suction openings formed in said conveyor table;
three suction chambers formed in said suction box and extending in succession in a sheet transport direction, said suction chambers including a first suction chamber subjectible to underpressure by a first vacuum source, a third suction chamber facing towards the sheet-processing machine, and a second and middle suction chamber subjectible in common with said third suction chamber to underpressure by a second vacuum source;
a suction roller located between a sheet pile and said conveyor table, said suction roller being subjectible to underpressure together with said first suction chamber by said first vacuum source; and
said suction roller having a plurality of suction holes distributed over the circumference thereof, said suction holes, in a region of said circumference of said suction roller facing towards a sheet, and being subjectible to underpressure of a given level.
1 Assignment
0 Petitions
Accused Products
Abstract
Device for conveying a stream of sheets to a sheet-processing machine having a conveyor table with endless transport tapes formed with through-holes and drivable around the conveyor table, and a suction box arranged below the conveyor table and connected with an underside of the transport tapes via suction openings formed in the feed table includes three suction chambers formed in the suction box and extending in succession in a sheet transport direction, the suction chambers including a first suction chamber subjectible to underpressure by a first vacuum source, a third suction chamber facing towards the sheet-processing machine, and a second and middle suction chamber subjectible in common with the third suction chamber to underpressure by a second vacuum source.
48 Citations
7 Claims
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1. Device for conveying a stream of sheets to a sheet-processing machine, comprising:
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a conveyor table with endless transport tapes formed with through-holes and drivable around said conveyor table, said transport tapes having an underside and said conveyor table having suction openings formed therein; a suction box disposed below said conveyor table and connected with said underside of said transport tapes via said suction openings formed in said conveyor table; three suction chambers formed in said suction box and extending in succession in a sheet transport direction, said suction chambers including a first suction chamber subjectible to underpressure by a first vacuum source, a third suction chamber facing towards the sheet-processing machine, and a second and middle suction chamber subjectible in common with said third suction chamber to underpressure by a second vacuum source; a suction roller located between a sheet pile and said conveyor table, said suction roller being subjectible to underpressure together with said first suction chamber by said first vacuum source; and said suction roller having a plurality of suction holes distributed over the circumference thereof, said suction holes, in a region of said circumference of said suction roller facing towards a sheet, and being subjectible to underpressure of a given level. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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Specification