Panel cutting apparatus

B - Operations – Transporting – 23 – D

Patent

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Details

B23D 25/12 (2006.01) B26D 7/18 (2006.01) B26D 7/26 (2006.01) B26F 1/38 (2006.01) B31B 19/20 (2006.01)

Patent

CA 2181784

A rotary cutting assembly is provided for cutting a panel from an envelope blank or the like. The die holder has an outer surface and a plurality of surface orifices radially communicating with corresponding feed tubes for supplying vacuum or air to the surface and into the vicinity of the envelope blank. The die holder may have an outer surface extending along the longitudinal axis for detachable receiving the leading end of the cutting die and a plurality of magnetic members are disposed in the die holder surface for attracting the cutting die. A novel valve assembly is provided for controlling the flow of air to the surface orifices.

Cette invention se rapporte à un ensemble de coupe rotatif (10), qui sert à découper une fenêtre dans une feuille brute pour enveloppe ou similaire. Le cylindre porte-matrice (16) comporte une surface externe et plusieurs orifices de surface (70) communiquant radialement avec des tubes d'alimentation correspondants (80), lesquels sont destinés à créer un vide ou à acheminer de l'air à la surface et au voisinage de la feuille brute pour enveloppe. Le cylindre porte-matrice peut comporter une surface externe qui s'étend le long de l'axe longitudinal, afin de recevoir de façon amovible l'extrémité d'attaque de la matrice de coupe, et plusieurs éléments magnétiques (220) sont disposés dans la surface du cylindre porte-matrice pour retenir la matrice de coupe. Un nouvel ensemble à valve (260) est conçu pour réguler le flux d'air vers les orifices de surface.

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