Abstract: A device for additive manufacturing of all or part of a three-dimensional object (106) on a manufacturing support (104) comprising at least one additive material-depositing rail (20, 30) intended to be positioned above the manufacturing support (104), extending along a longitudinal axis (X) 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 movable between a closed position and a plurality of open positions of said dispensing orifice, and an actuator for controlling the movement of the closing means between the closed and open positions, the closing means being controllable independently of each other. The device comprises at least one actuation system configured to generate a relative translation of the material-depositing rail with respect to the manufacturing support (104) in at least a vertical direction (Z) and/or a longitudinal direction (X).

Abstract: A three-dimensional printing machine (1) comprises a main chamber (2) which is delimited by a first wall (3) and inside which there are a main platform (5), intended to support a part (4) being printed, and a nozzle (6) designed to supply and deposit a printing material (7) in successive layers, the first wall (3) having at least one transparent main observation window (11), the main chamber (2) containing a secondary chamber (20) which is delimited by a telescopic second wall (21) provided with an insertion orifice (22), through which the nozzle (6) enters the secondary chamber (20), and a transparent secondary observation window (23) allowing an observer (25) stationed outside the main chamber (2) to view the part being printed in the secondary chamber (20).

Abstract: The invention relates to a three-dimensional printing machine (1) comprising a main chamber (2) which is delimited by a first wall (3) and inside which there are a main platform (5), intended to support a part (4) being printed, and a nozzle (6) designed to supply and deposit a printing material (7) in successive layers, the first wall (3) having at least one transparent main observation window (11), the main chamber (2) containing a secondary chamber (20) which is delimited by a telescopic second wall (21) provided with an insertion orifice (22), through which the nozzle (6) enters the secondary chamber (20), and a transparent secondary observation window (23) allowing an observer (25) stationed outside the main chamber (2) to view the part being printed in the secondary chamber (20).

Abstract: A fluid dispensing device (100) for controlling the atmosphere of a work zone (20) has a first connection stage (103), which is provided with an intake chamber (105), intended to receive the incoming fluid (101) and an evacuation chamber (106) intended to collect the outgoing fluid (102) and separated from the intake chamber (105) by a first partitioning structure (110), then a second dispensing stage (104), which comprises, according to an alternation of injection angular segments (A111) and of extraction angular segments (A112) defined by a second partitioning structure (114), a plurality of injection cells (111) which communicate with the intake chamber (105) and which are coupled respectively to several injection points (46) provided in the work zone (20), and plurality of extraction cells (112) which communicate with the evacuation chamber (106) and which are coupled respectively to several extraction points (47) provided in the work zone (20).