MACHINE FOR CUTTING PLASTIC MOLDS FROM A CONTINUOUS SHEET OF CORRUGATED CARD AND FOR FORMING FOLDING LINES USED IN FLAT MOLDS

摘要

A machine for punching blanks ( 10 ) of corrugated cardboard out of a web or plates of corrugated cardboard and for forming folding lines ( 5 ) in said blanks. The machine has two cylinders ( 2, 3 ) rotating towards each other and of which at least one cylinder is provided on the outer surface with a curved wooden plate ( 6 ). The punching tools and the folding line tools ( 8, 9 ) are mounted on said wooden plate by being pressed into slits in said wooden plate ( 6 ). The cylinders ( 2, 3 ) are made of metal, preferably steel. The wooden plate ( 6 ) is secured to the cylinder ( 2, 3 ) by being screwed ( 15 ) thereon. The wooden plate is centered on the cylinder by means of two adjustable rings ( 4 ) on the cylinder. Each ring ( 4 ) is provided with an axially directed guide projection ( 4 a , 4 b) adapted to interact with an end notch ( 6 a , 6 b) in the wooden plate. In this way, it is rendered possible in a very simple way to centre the wooden plate and consequently the punching tool in relation to the vertical centre plane of the cylinder.