▎ 摘　　要

NOVELTY - Water-glass sand extruding, micro-hammering and 3D printing microwave curing device comprises an xy two-shaft moving mechanism, nozzle mechanism, microwave emitting mechanism, lifting working table, where the lifting working table is provided with a nozzle mechanism and a microwave emitting mechanism. The nozzle mechanism and the microwave emitting mechanism are fixed on the xy two-shaft moving mechanism. The nozzle mechanism comprises a shell (1), rubber nozzle (2), lifting mechanism, concave-convex guide column (3) and pear-shaped micro-hammer head, where the shell is provided with a cavity for placing the mixed slurry (5). The lower portion of the cavity is provided with an outlet channel. The lower end of the outlet channel is provided with a rubber nozzle. The cavity is provided with a concave-convex guide column. The lower portion of the concave-convex guide column is provided with a micro-hammer head (4). The micro-hammer head is set in the rubber nozzle. USE - Water-glass sand extruding, micro-hammering and 3D printing microwave curing device. ADVANTAGE - The device can realize directly extruding a mixed sand material. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for microwave curing method for three-dimensional printing of sodium silicate sand extrusion micro-hammer, which involves: (A) adding water glass binder and external additive accounting for 0.1-3 wt.% of the weight of the sand to the water glass sand to obtain mixed slurry, where the external additives include anti-hygroscopic agents, wave absorbing agents and flow promoters; (B) injecting the mixed slurry into the cavity of the nozzle mechanism of the three-dimensional printer, moving the lifting table to a preset height; (C) moving nozzle mechanism to the corresponding position according to the preset program, extruding mixed slurry onto the worktable; (D) driving concave-convex guide post in the nozzle mechanism the micro-hammer head to slightly hammer the mixed slurry up and down to form the current sand-like layer shape; (E) driving nozzle mechanism the microwave launching mechanism to move on the horizontal plane along the X-axis or Y-axis according to the preset path, perfoming the microwave launching mechanism microwave targeted curing on the sand sample layer at multiple positions; and (F) judging whether the three-dimensional printing of the sand mold is completed after the microwave targeted solidification of the current sand sample layer is completed, after the lifting table moves down to the preset position to obtain water glass sand mold without sand cleaning. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of a device. Shell (1) Rubber nozzle (2) Concave-convex guide column (3) Micro-hammer head (4) Mixed slurry (5) Internal microwave isolation protective cover (6) Dehumidifying fan (7) Substrate (8)