| CPC B29C 64/165 (2017.08) [B29C 64/205 (2017.08); B29C 64/232 (2017.08); B29C 64/268 (2017.08); B29C 64/277 (2017.08); B29C 64/295 (2017.08); B29C 64/336 (2017.08); B29C 64/393 (2017.08); B33Y 10/00 (2014.12); B33Y 30/00 (2014.12); B33Y 50/02 (2014.12); B33Y 70/10 (2020.01)] | 6 Claims |
|
1. A forming apparatus for forming a three-dimensional formed body, comprising:
a stage;
a supply unit configured to intermittently or continuously supply a composition comprising an inorganic material to the stage, the composition comprising an organic binder in which the inorganic material has been dispersed or an organic coating surrounding the inorganic material;
a heating unit comprising a thermal solidification laser and a degreasing laser, the thermal solidification laser and the degreasing laser each being spaced apart from the stage and each being disposed above the stage, the thermal solidification laser configured to perform at least thermal solidification of the composition on the stage, the degreasing laser configured to degrease the organic binder or the organic coating by applying heat to the composition, the degreasing laser being different than the thermal solidification laser, the heating unit comprising a thermal solidification laser moving mechanism configured to move the thermal solidification laser relative to the stage at least in two orthogonal horizontal directions, and a degreasing laser moving mechanism configured to move the degreasing laser relative to the stage at least in the two orthogonal horizontal directions;
an information acquisition unit configured to acquire information on the geometric state of the thermally solidified composition, the information acquisition unit comprising a photographing device configured to photograph the thermally solidified composition on the stage, the information acquisition unit configured to acquire the information on the geometric state of the thermally solidified composition based on photographed data obtained from the photographing device, the information on the geometric state of the thermally solidified composition including locations of cracks or pores;
a removal unit configured to remove at least a portion of the thermally solidified composition from the stage; and
a control unit configured to control the supply unit and the heating unit to repeat supply and thermal solidification of the composition, and to control the supply unit and the heating unit based on the acquired information, the control unit configured to control a position of the supply unit and a position of the heating unit relative to the stage based on the information on the geometric state of the thermally solidified composition, the control unit configured to control the degreasing laser to perform the degreasing,
wherein the control unit is configured to control the removal unit to remove the at least a portion of the thermally solidified composition on the stage to suppress the cracks or pores, based on the information on the geometric state of the thermally solidified composition,
wherein the control unit controls the supply unit and the heating unit to repeat supply and thermal solidification of the composition at least along a surface of the stage based on the acquired information, to re-fill a removed portion of the thermally solidified composition.
|