Non-marking slow-down apparatus

B - Operations – Transporting – 65 – H

Patent

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Details

B65H 29/66 (2006.01) B65H 29/68 (2006.01)

Patent

CA 2238584

A slow-down apparatus is disclosed using a suction box by itself to slow a sheet of paper in a paper transport apparatus, and to remove the trailing edge of a sheet from the path of the leading edge of an oncoming or following sheet to prevent lead edge damage. A set of high-speed conveyors deliver a sheet above shingled predecessor sheets being drawn by a slow-down conveyor. The shingled sheets "shutter" a suction box beneath them from affecting the delivered high-speed sheet. As the shingled sheets uncover the suction box, the high-speed delivered sheet is affected and drawn to the low-speed conveyor.

L'invention porte sur un appareil de ralentissement qui utilise seulement une caisse aspirante pour ralentir une feuille de papier sur un appareil transporteur et pour retirer le bord arrière de la feuille du chemin du bord avant d'une feuille suivante afin de prévenir tout dommage à ce dernier. Un ensemble de convoyeurs à grande vitesse permet de déposer une feuille au-dessus des feuilles précédentes imbriquées qui sont tirées par un convoyeur de ralentissement. Les feuilles imbriquées recouvrent la caisse aspirante et l'empêchent ainsi d'avoir un effet sur la feuille déposée à grande vitesse. Dès que les feuilles imbriquées découvrent la caisse aspirante, la feuille déposée à grande vitesse est aspirée, puis amenée jusqu'au convoyeur à faible vitesse.

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