DEVICE TO PRODUCING 3D ARTICLE AND METHOD OF PRODUCING SAID ARTICLE Russian patent published in 2011 - IPC B29C67/04 

FIELD: process engineering.

SUBSTANCE: proposed invention allows producing 3D articles made up of consecutive layers of powder material. Proposed device comprises: powder feed system comprising one or several powder tanks and powder distribution system, printing system to feed fluid, forming chamber with inner and outer wall, and forming plate. The latter may move along forming chamber inner wall. Note here that proposed device incorporates powder return system while forming chamber comprises zone formed at top part between forming chamber inner and outer walls to communicated with powder return system. Said forming plate may release unutilised powder directly from forming chamber downward into powder return system. Note also that invention covers the method of forming 3D article that exploits above described device.

EFFECT: simple design, efficient production due to reuse of unutilised powder.

29 cl, 9 dwg