Method and apparatus for direct shingling of cut sheets at the c

Details Method and apparatus for direct shingling of cut sheets at the c Method and apparatus for direct shingling of cut sheets at the c

1997-04-11

2000-06-13

Peterson, Kenneth E.

Cutting

With product handling means

Including means to form or hold pile of product pieces

83110, 83155, 83342, 83345, B26D 140

Patent

active

060735279

ABSTRACT:
Shingling of paperboard sheets cut from a web with a helical blade cutoff knife utilizes the downward deflection of the trailing edge of the cut sheet and simultaneous lifting of the leading edge of the web to position the sheets for shingling immediately downstream of the knife. A vacuum outfeed conveyor takes advantage of the initial downward deflection of the sheet caused by cutting to pull the trailing edge of the sheet onto the vacuum conveyor which is simultaneously slowed relative to the lead edge of the advancing web. In the preferred embodiment, vacuum is continuously applied and the conveyor is accelerated back to line speed as soon as the leading end of the web is pulled onto the vacuum conveyor.

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patent: 5644941 (1997-07-01), Stodt et al.
patent: 5950510 (1999-09-01), Scheffer

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