3-D PRINTER WITH GAS EXCHANGE MECHANISM FOR RECOATING CONTAMINATIONS DURING RECOATING

Techniques for cleaning a printing chamber using a gas exchange structure and a recoater are introduced. The gas exchange structure is coupled to the applicator, and both move in the same direction to benefit from gas flow. In one embodiment, the gas exchange structure includes a manifold. Further,...

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Bibliographische Detailangaben
Hauptverfasser:	TENHOUTEN BROCK WILLIAM, AL NAGA, JAHA NAJI
Format:	Patent
Sprache:	chi ; eng
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 printing chamber using a gas exchange structure and a recoater are introduced. The gas exchange structure is coupled to the applicator, and both move in the same direction to benefit from gas flow. In one embodiment, the gas exchange structure includes a manifold. Further, in one embodiment, the travel wall may be coupled to the longitudinal axis of the recoater to maintain the clean chamber separated from the dirty chamber. As a result, in each cycle, gaseous contaminants mainly caused by the melting and melting processes are removed from the powder bed and chamber, and the resulting 3-D produced parts remain very high quality over a long period of time. 介绍了使用气体交换结构和重涂覆器来清洁打印室的技术。气体交换结构联接到涂覆器，并且两者在相同的方向上移动以受益于气体流动。在一个实施例中，气体交换结构包括歧管。此外，在一个实施例中，行进壁可以联接到重涂覆器的纵向轴线，以便保持清洁的室与脏的室隔开。结果是，在每个循环中，主要由熔融和熔化过程引起的气体污染物被从粉末床和室中去除，并且所得到的3-D生产的部件在长时间保持非常高的质量。