Toyota Jidosha Kabushiki Kaisha

Yoshizumi Senda

Soya Takagi

Yuji Okada

Yukio Otsuka

Masaru Ogura

Motoaki Ozaki

Hiromoto Satoh

Masuo Shimizu

After sand of one layer is loaded into a sand layer elevator (20), a shading mask (38) is positioned above the sand, and a diffused laser beam is irradiated from a diffused laser irradiating source (16). Thereby, a predetermined range of sand under the shading mask (38) is exposed and this exposed portion is cured. This operation is repeated for a predetermined number of sand layers and cured portions are piled up to directly form a 3-D sand mould. Particularly, a diffused laser beam is used to cure a wide range of sand at a time, thereby making sand mould mass-production possible.

Method for laminate forming a sand mould and a method for producing a

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Toyota, Japan

Yoshizumi Senda