Process for pre-setting mounting holes for cutting and ejection tools of an automatic platen press

A method for presetting mounting holes for cutting and ejection tools of an automatic platen press, which tools are used for cutting cardboard box blanks in sheets and stripping waste therefrom, said cutting tool being a cutting form made up of a wooden board, which on one face has a plurality of cutting rules and creasing rules arranged in a pattern, said ejection tools including a first ejection board of the same dimension as the cardboard box blank being produced and a second ejection board of the same dimension as the part of the sheet acting as a gripping engagement by which the sheet is seized in order to be moved from one tool to the other in the press, said method comprising the steps of providing a pre-mounting template having means for longitudinal positioning of the tools on the template, said means for longitudinally positioning being identical to the corresponding means for mounting each of the tools in the press and including a fixed rectilinear stop adjacent a lower edge of the template and a horizontal bar displaceable relative to the stop, said template having a plurality of holes disposed in a distribution identical to that of the corresponding means for mounting in the press;

• milling an edge of the cutting form flush with a first cutting rule running along said edge, so as to cause said rectilinar stop to appear in registry with said first rule when placed on said template;
• arranging the cutting form on said pre-mounting template that is vertically disposed with said first cutting rule being received on the fixed rectilinear stop of said template;
• drilling two centering holes in the lower part of said cutting form through two centering holes provided in the template;
• introducing in each of these aligned holes a pin to immobilize the form on the template during the subsequent operations;
• drilling a plurality of fixation holes in the form distributed in the best possible fashion and selected among a range of holes in the template;
• placing the second ejection board on the template with its lower edge resting on the horizontal bar;
• aligning the second board with the cutting form including displacing the bar in such a manner as to bring the lower edge of the second ejection board into alignment with the first cutting rule of the form;
• then drilling centering holes aligned with those of the form by alternately removing one pin then the other;
• removing the second ejection board;
• putting an edge of the first ejection board on the bar and aligning the dimension of the board which is centered with the form;
• drilling two centering holes into the first ejection board in alignment with the centering holes of the form;
• removing the cutting form;
• removing the pins from the template and placing cross-pieces equipped with axles and spacers in the two centering holes of the template;
• reassembling the first ejection board on the template with the centering holes of the board receiving the cross-pieces;
• and then drilling at least two groups of fixation holes in the first ejection board using the holes in the template to determine the position of the fixation holes.