3-D PRINTER WITH GAS EXCHANGE MECHANISM FOR REMOVING CONTAMINANTS DURING RE-COATING

Techniques for cleaning a print chamber using a gas exchange structure and a re-coater are introduced. The gas exchange structure is coupled to the coater, and the two move in a same direction to benefit from the gas flow. In an embodiment, the gas exchange structure includes a manifold. Further, in...

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Bibliographische Detailangaben
Hauptverfasser:	EL NAGA, Eahab Nagi, TENHOUTEN, Broc William
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	ADDITIVE MANUFACTURING TECHNOLOGY ADDITIVE MANUFACTURING, i.e. MANUFACTURING OFTHREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVEAGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING,STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING CASTING MAKING METALLIC POWDER MANUFACTURE OF ARTICLES FROM METALLIC POWDER PERFORMING OPERATIONS POWDER METALLURGY SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS TRANSPORTING WORKING METALLIC POWDER WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Beschreibung
Zusammenfassung:	Techniques for cleaning a print chamber using a gas exchange structure and a re-coater are introduced. The gas exchange structure is coupled to the coater, and the two move in a same direction to benefit from the gas flow. In an embodiment, the gas exchange structure includes a manifold. Further, in an embodiment, a travelling wall may be coupled to a longitudinal axis of the re-coater in order to keep separate the clean chamber from the dirty chamber. The result is that gas contaminants caused largely by the fusion and melting processes are removed from the powder bed and chamber at each cycle, and the resulting 3-D produced component maintains a very high quality for a long period of time.