A manufacturing machine for the production of disposable cartridges; the manufacturing machine comprising: a first conveyor, which feeds a plurality of first seats, each designed to house a corresponding cartridge, along a first path; a second conveyor, which feeds a plurality of second seats, each designed to house a corresponding cartridge, along a second path perpendicular to the first path; and a transfer unit, which is designed to pick up a group of cartridges from first seats of the first conveyor and to deposit the group of cartridges in second seats of the second conveyor and comprises: a gripping head, which is designed to grab the group of cartridges, and a first actuator device, which cyclically moves the gripping head along a first moving direction parallel to the second path between a pick-up station at the first conveyor and a release station at the second conveyor; wherein: the first conveyor feeds the first seats along the first path with a feeding step corresponding to a number of first seats which is not an integral submultiple of the number of rows of cartridges simultaneously grabbed by the gripping head; and the transfer unit comprises a second actuator device, which moves the gripping head along a second moving direction, which is parallel to the first path and perpendicular to the first moving direction, and in both directions, so that, when it is in the release station, the gripping head is always aligned with the second seats of the second conveyor and, when it is in the pick-up station, the gripping head is always aligned with an end portion of the first seats of the first conveyor containing respective cartridges. a first conveyor, which feeds a plurality of first seats, each designed to house a corresponding cartridge, along a first path; a second conveyor, which feeds a plurality of second seats, each designed to house a corresponding cartridge, along a second path perpendicular to the first path; and a transfer unit, which is designed to pick up a group of cartridges from first seats of the first conveyor and to deposit the group of cartridges in second seats of the second conveyor and comprises: a gripping head, which is designed to grab the group of cartridges, and a first actuator device, which cyclically moves the gripping head along a first moving direction parallel to the second path between a pick-up station at the first conveyor and a release station at the second conveyor; wherein: the first conveyor feeds the first seats along the first path with a feeding step corresponding to a number of first seats which is not an integral submultiple of the number of rows of cartridges simultaneously grabbed by the gripping head; and the transfer unit comprises a second actuator device, which moves the gripping head along a second moving direction, which is parallel to the first path and perpendicular to the first moving direction, and in both directions, so that, when it is in the release station, the gripping head is always aligned with the second seats of the second conveyor and, when it is in the pick-up station, the gripping head is always aligned with an end portion of the first seats of the first conveyor containing respective cartridges. the first conveyor feeds the first seats along the first path with a feeding step corresponding to a number of first seats which is not an integral submultiple of the number of rows of cartridges simultaneously grabbed by the gripping head; and the transfer unit comprises a second actuator device, which moves the gripping head along a second moving direction, which is parallel to the first path and perpendicular to the first moving direction, and in both directions, so that, when it is in the release station, the gripping head is always aligned with the second seats of the second conveyor and, when it is in the pick-up station, the gripping head is always aligned with an end portion of the first seats of the first conveyor containing respective cartridges.