3D CONCRETE EXTRUSION APPARATUS FOR 3D PRINTING SYSTEM

摘要

This specification discloses a concrete extrusion apparatus that is fast and structurally stable compared to the operation time of a conventional concrete nozzle. The concrete extrusion apparatus according to the present invention comprises: a central nozzle for vertically extruding concrete; And first and second side nozzles connected to both sides of the center nozzle and for extruding a finish material having a hardening speed faster than the concrete extruded from the center nozzle.