Powder feeding device for forming selective laser melting digital material

• Main Authors: LIU LINQING, WANG DI, YANG YONGQIANG, OU YUANHUI
• Format: Patent
• Language: Chinese; English
• Published: 15.04.2022
• Subjects: 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; CASTING; MAKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; PERFORMING OPERATIONS; POWDER METALLURGY; TRANSPORTING; WORKING METALLIC POWDER

The invention discloses a powder feeding device for selective laser melting digital material forming. The powder feeding device comprises two independent powder feeding mechanisms. The two independent powder feeding mechanisms have multi-material weighing and distributing and fixed-point conveying functions; powder of various different materials can be quantitatively and accurately supplied according to the required weight ratio, so that the ratio of the powder in each powder spreading layer is controllable; and the specified material can be accurately conveyed to a preset position of a forming surface, so that the material composition in different directions in each powder paving layer is changed in a gradient manner. According to the powder feeding device, the two independent powder feeding mechanisms are organically integrated, powder laying can be considered, powder of different materials can be put in a fixed-point and fixed-area mode, the powder utilization rate and the multi-material applicability are