Patent ID: 6994662

Claim:
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, said machine including 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 ), punching tools and folding line tools ( 8 , 9 ) being mounted on said wooden plate by being pressed into slits in said wooden plate ( 6 ), wherein the cylinders ( 2 , 3 ) are made of metal and said wooden plate ( 6 ) is secured to said one cylinder ( 2 , 3 ) and centred on said one cylinder by means of two adjustable rings ( 4 ) on said one cylinder whereby at least one ring ( 4 ) is automatically rotatable or axially displaceable, each ring ( 4 ) being 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.