Trafila ad estrusione verticale per macchine per la produzione di pasta e macchina per la produzione di pasta provvista di tale trafila ad estrusione verticale

The invention relates to a vertical extrusion die (1; 11) having one or more holes (3) through which the dough passes in order to obtain the desired spaghetti shape. According to the invention, the one or more holes (3) of the extrusion die (1) comprise one or more regions (6c; 6d) of the dough having a higher resistance to the passage of the dough. 17b) and one or more regions (6a, 6b; 17b) having a lower resistance to the passage of the dough; 17a), whereby, in accordance with the shape of the outlet section of the one or more holes (3), during the extrusion, within the same time interval, the resistance of the region (6c; 17b), which can make a larger amount of dough in the areas (6a, 6b; 17a) in order to apply a twisting and/or rotating or undulating movement to the dough.