APPARATUS FOR MAKING THREE-DIMENSIONAL OBJECT BY A SELECTIVE LASER SINTERING POWDER BED ADDITIVE MANUFACTURING

摘要

In a three-dimensional shaping device, a region of an elevatable/lowerable table (2) for forming a powder layer and a vicinity thereof and a region of a powder supply device (30) and a vicinity thereof are divided by a shield plate (6), an inert gas injection port is provided in the former region, the shield plate (6) is made so as to be freely opened or closed so that a powder spraying squeegee (31) traveling on the table (2) is passed through, or a pipe (33) which supplies powder from the powder supply device (30) to the powder spraying squeegee (31) which has traveled to the side of the shield plate (6) penetrates through the shield plate (6), or a part of the shield plate (6) is used as a powder supply port for the powder spraying squeegee (31) which has traveled to the side of the shield plate (6) and the pipe (33) through which the powder passes when dropping from the supply port is provided to protrude at a lower part and a sintering device (4) is provided which applies a laser beam via a transparent region (81) in a ceiling (8) of a chamber (1).