Drive arrangement for knives in silk-screen printing machines

Drive arrangement for knives employed to spread and thrust ink through printing matrices on silk-screen printing machines, comprising:

• first drive members adapted to control reciprocating movements of said knives relative to a matrix, including
• at least one plate element moving with reciprocating movements parallel to said matrix;
• a through slot formed in said plate element and substantially parallel to said matrix;
• and
• a pin passed slidingly and rotatably through said through slot and engaging said knives;
• and
• second drive members adapted to control up and down movements of said knives relative to said matrix, including
• a blind cutout formed in said plate element and defining a guide extending in a transverse plane to said pin;
• and
• a small lever adjacent to said plate element and having a first end attached transversely to said pin, and a second drive end engaged slidingly with said blind cutout;
• said blind cutout defining said guide having a first stretch extending along an inclined direction to said through slot and a second stretch extending parallel to said through slot;
• and
• said first stretch being in succession to said through slot and said guide forming with said through slot a substantially single continuous groove in said plate element for controlling both reciprocating and up and down movements of said knives relative to said matrix.