Device and method for the additive manufacture of a three-dimensional object

A device for additive manufacturing of all or part of a three-dimensional object on a manufacturing support, the device comprising:

• at least one additive material-depositing rail intended to be positioned above the manufacturing support, extending along a longitudinal axis and comprising a plurality of material-depositing nozzles, each provided with at least one dispensing orifice,
• each of the material-depositing nozzles comprising closing means that can be moved between a closed position and a plurality of open positions of the at least one dispensing orifice, and an actuator for controlling movement of the closing means between the closed and open positions,
• the closing means being controllable independently of each other;
• one actuation system configured to generate a relative translation of the at least one additive material-depositing rail with respect to the manufacturing support in at least a vertical direction and/or a longitudinal direction;
• and
• a drive member of the manufacturing support capable of driving the manufacturing support in a working direction perpendicular to the longitudinal direction,
• wherein the material-depositing nozzles of the at least one additive material-depositing rail are arranged in a single plane comprising the longitudinal axis perpendicular to the working direction, the material-depositing nozzles being vertically offset relative to each other.

A method for additive manufacturing of all or part of a three-dimensional object on a manufacturing support using a manufacturing device comprising at least one material-depositing rail positioned above the manufacturing support, extending along a longitudinal axis and comprising a plurality of additive material-depositing nozzles, each provided with at least one dispensing orifice, the additive material-depositing nozzles of the at least one material-depositing rail being arranged in a single plane comprising a longitudinal axis perpendicular to a working direction, the additive material-depositing nozzles being vertically offset relative to each other, the method comprising the following steps:

• a material deposition sequence during which each of the additive material-depositing nozzles deposits extruded material on the manufacturing support;
• independently controlling closing means associated with each of the additive material-depositing nozzles in order to move between a closed position and a plurality of open positions of the dispensing orifice of each additive material-depositing nozzle depending on a geometry of the three-dimensional object to be manufactured, and during each material deposition sequence, translating the manufacturing support relative to the at least one material-depositing rail along a transverse axis between an initial position and a final position;
• and
• after each material deposition sequence, causing the at least one material-depositing rail and the manufacturing support to undergo relative translation with respect to each other in at least a vertical direction and/or a longitudinal direction,
• wherein a width of the at least one material-depositing rail is smaller than a width of the three-dimensional object to be manufactured,
• wherein, during each material deposition sequence, each additive material-depositing nozzle deposits material over a thickness in a given line of material,
• wherein the at least one material-depositing rail is translated axially relative to the manufacturing support along the longitudinal axis by the width of the at least one material-depositing rail after each material deposition sequence, and
• wherein the steps are repeated until a first layer of material comprising all lines of material is obtained.