Patent ID: 6074332
Filing Date: 2000-06-13
Classification: B65H

Abstract:
A knife folder for folding a sheet material, said knife folder having the following features:a sheet-material feed means for feeding said sheet material in a first direction;a folding device for folding said sheet material; anda sheet-material conveying means used for conveying said folded sheet material and comprising at least one pair of rotating conveying components whose axes of rotation are arranged in a second direction substantially at right angles to said first direction, each rotating conveying component having two sides, one of said two sides facing said folding device and another of said two sides facing away from said folding device, said axis of rotation of each rotating conveying component extending between said two sides;said folding device pushing said sheet material between said at least one pair of rotating conveying components when it is at its folding position to obtain said folded sheet material, the movement of said knife, when said knife pushes said sheet material between said rotating conveying components being in said second direction;wherein said folding device comprises a knife having a folding edge extending along a third direction substantially at right angles to said first and said second directions, said third direction thus being substantially at right angles to said direction of movement of said knife, when said knife pushes said sheet material between said rotating conveying components;wherein, on said side facing said knife, each rotating conveying component of said at least one pair of rotating conveying components has a reduced diameter in comparison with its maximum diameter; andwherein said folded sheet material can be conveyed in said third direction by actuating said rotating conveying components.