An improved packaging machine, comprising: a rest surface (2) for supporting one or more blanks (B) intended to form a quadrangular packaging (C); containing means (3), structured for containing a plurality of blanks (B) destined to form the packaging; handier means (4), structured so as to pick up the blanks (B) from the containing means (3) and to arrange them on the rest surface (2), folder means (5), structured so as to fold the blanks (B) in such a way as to form the packaging; a store (31,32,33,34) for each side of the packaging (C); a handier (41,42,43,44) for each side of the packaging (C).