A manufacturing machine for the production of disposable cartridges; each disposable cartridge comprises a tubular casing provided with a wall and a quantity of product housed in the tubular casing; the manufacturing machine comprises: a manufacturing conveyor, which supports at least one group of seats, each designed to house a corresponding tubular casing; and a feeding unit, which is designed to couple a plurality of walls to respective tubular casings housed in the group of seats standing still in a feeding station; wherein the feeding unit comprises: a die, which is arranged in the feeding station and has a plurality of through openings, each shaped like a wall; a conveyor, which is designed to place a plate, in which a plurality of walls are obtained, in contact with the die; a plurality of cutting punches, which are arranged in the feeding station in alignment with the through openings of the die; and an actuator, which is designed to move the cutting punches between a rest position, in which the cutting punches are separate from the die, and an application position, in which the cutting punches are arranged through the respective through openings of the die; the manufacturing machine is characterized in that in the application position the cutting punches are arranged through the respective through openings of the die so as to rest the walls against the tubular casings. a manufacturing conveyor, which supports at least one group of seats, each designed to house a corresponding tubular casing; and a feeding unit, which is designed to couple a plurality of walls to respective tubular casings housed in the group of seats standing still in a feeding station; wherein the feeding unit comprises: a die, which is arranged in the feeding station and has a plurality of through openings, each shaped like a wall; a conveyor, which is designed to place a plate, in which a plurality of walls are obtained, in contact with the die; a plurality of cutting punches, which are arranged in the feeding station in alignment with the through openings of the die; and an actuator, which is designed to move the cutting punches between a rest position, in which the cutting punches are separate from the die, and an application position, in which the cutting punches are arranged through the respective through openings of the die; the manufacturing machine is characterized in that in the application position the cutting punches are arranged through the respective through openings of the die so as to rest the walls against the tubular casings. a die, which is arranged in the feeding station and has a plurality of through openings, each shaped like a wall; a conveyor, which is designed to place a plate, in which a plurality of walls are obtained, in contact with the die; a plurality of cutting punches, which are arranged in the feeding station in alignment with the through openings of the die; and an actuator, which is designed to move the cutting punches between a rest position, in which the cutting punches are separate from the die, and an application position, in which the cutting punches are arranged through the respective through openings of the die; the manufacturing machine is characterized in that in the application position the cutting punches are arranged through the respective through openings of the die so as to rest the walls against the tubular casings.