THREE-DIMENSIONAL MOLDING APPARATUS

PROBLEM TO BE SOLVED: To provide a three-dimensional molding apparatus that can mold a three-dimensional molded object while avoiding a whitened portion in a tank made of a resin.SOLUTION: A three-dimensional molding apparatus 1 includes: a molding apparatus main body including a tank that is made of a resin material and houses a photocurable resin, and an optical device that includes at least a light source to emit light and irradiates a photocurable resin housed in the tank with the light from the light source; and a control device 16 for controlling the optical device. The control device 16 includes: a specifying unit 52 that specifies a scheduled region for molding where a first three-dimensional molded object is to be molded in the tank; and a light irradiation unit 60 to control the optical device in such a manner that prior to successively stacking resin layers having a cross-sectional shape of the first three-dimensional molded object by curing the photocurable resin, the optical device varies the light from the light source into light at a wavelength where the photocurable resin is not cured, and displays the specified scheduled region for molding by the varied light in the tank.SELECTED DRAWING: Figure 3 【課題】樹脂製の槽のうち白色化した部分を避けて３次元造形物を造形することが可能な３次元造形装置を提供すること。【解決手段】３次元造形装置１は、樹脂材料によって成形され、光硬化性樹脂を収容する槽と、光を発する光源を少なくとも備え、光源からの光を槽内に収容された光硬化性樹脂に照射する光学装置と、を備えた造形装置本体と、光学装置を制御する制御装置１６と、を備え、制御装置１６は、槽のうち第１の３次元造形物が造形される造形予定領域を特定する特定部５２と、光硬化性樹脂を硬化させて第１の３次元造形物の断面形状の樹脂層を順次積層する前に、光源からの光を光硬化性樹脂が硬化しない波長からなる光に変更し、特定された造形予定領域を変更された光によって槽に表示するように光学装置を制御する光照射部６０と、を備えている。【選択図】図３