Patent ID: 6116128
Filing Date: 2000-09-12
Classification: B26D,B65H,Y10T

Abstract:
A method for shaping a plurality of sheets forming a stack, each sheet having four edges and four corners to be shaped, said the method comprising the steps of:positioning four cutting devices adjacent a surface, each one of the four cutting devices being proximate a respective one of the four corners;injecting air between the sheets of the stack;translating the stack in a first direction and then in a second direction to a first position, respectively, to position a first edge of the stack abutting a first and second mechanical stop and to position a second edge of the stack abutting a third mechanical stop, the first direction being orthogonal to the second direction;actuating a first pair of the four cutting devices, when the stack is in the first position, to shape a first and second corner of the sheets;applying a force on the stack in a third direction and in the first direction to position, through translation, the third edge of the stack against a fourth mechanical stop and to maintain the first edge of the stack in abutment against the first and second mechanical stops so as to position a second of the four corners adjacent a second of the four cutting devices, the first direction being substantially orthogonal to the third direction, the third direction being opposite and substantially parallel to the second direction; andactuating a second pair of the four cutting devices, when the stack is in the second position, to shape a third and fourth corner of the sheets.