Sheet stacking method and apparatus
AssigneeBHS-Bayerische Berg-, Hutten- und Salzwerke Aktiengesellschaft
InventorHans Mosburger
Life of this patent
Estimating the term…
Abstract
A sheet stacking method and apparatus having conveyor belts for feeding overlapping cut sheets of cardboard in a flow to a stacking station, in which in order to form a gap in the flow a second conveyor belt is driven faster than a first conveyor belt and, during the time the second belt is driven at the faster rate, a third conveyor belt lifts the sheets off the second belt and drives them at the same speed as the first conveyor belt until the sheet downstream of the gap has left the second belt, whereupon the second belt is again driven at the same speed as the first belt and the third belt replaces the flow of sheets onto the second belt.
Claims9
In a method for the stacking of sheets in which a flow of sheets overlapping like scales is fed by a removal conveyor belt from a sheet feed conveyor belt to a stacking station, the invention comprising the steps of:
- increasing the speed of the removal conveyor belt relative to the feed conveyor belt to form a gap in the flow of sheets;
- and
- lifting a portion of the sheet flow upstream of the gap away from the removal conveyor belt by advancing a lifting belt having louver strips to interpose the louver strips between the removal conveyor belt and said portion of the sheet flow upstream of the gap and the lifting belt conveying said portion at the same speed as the feed conveyor belt.
In a sheet stacking apparatus comprising a stacking station, and sheet feed and removal conveyor belts for feeding sheets to the stacking station, the invention comprising:
- means for driving the removal belt faster than the feed belt to form a gap in said flow;
- and
- means for lifting a portion of the sheet flow upstream of the gap away from the removal belt including a lifting belt having louver strips interposable between the removal conveyor belt and said portion of the sheet flow upstream of the gap and for conveying said portion at the same speed as the feed belt.
Dependencies are inferred from the claim text.