Patent ID: 6537189
Filing Date: 2003-03-25
Classification: B31B,B31F

Abstract:
A scoring apparatus for accurately scoring corrugated cardboard to produce fold lines for facilitating folding the cardboard into a box of predetermined dimensions, the scoring apparatus comprising:an annular scoring ring having a circumferential surface provided with a plurality of straight sides radially extending away from said circumferential surface of said scoring ring and aligned end to end in a plane of rotation of said scoring ring to form a polygonal scoring extension, said scoring ring mounted on a shaft for rotation; an annular conveyor ring having a circumferential surface mounted on a shaft for rotation in a direction opposite to that of said scoring ring; and, a conventional drive for rotating said shafts; said scoring ring and said conveyor ring mounted adjacent to each other to form a nip for conveying and scoring said cardboard, said polygonal scoring extension of said scoring ring and said circumferential surface of said conveyor ring being spaced apart from each other by a predetermined distance which is determined by the kind of corrugated board being scored, whereby when said cardboard is drawn between said scoring ring and said conveyor ring as said scoring ring and said conveyor ring rotate, each raised straight edge of said polygonal scoring extension, in turn, presses said cardboard against said circumferential surface of said conveyor ring, creating a substantially straight fold line in said cardboard from a leading edge of said cardboard to a trailing edge of said cardboard.