The invention relates to high-precision 3D sand mold printing equipment. The high-precision 3D sand mold printing equipment comprises a support frame, a sand box, an ink jet
assembly and a sand feeding
assembly, wherein sliding rails and lifting mechanisms are arranged at the two outer ends of the sand box; a mould lifting frame connected with the lifting mechanisms is arranged in the sand box; the ink jet
assembly comprises an ink jet trolley, a first guide rail and second guide rails; the ink jet trolley is connected with the first guide rail; the two ends of the first guide rail are connected with the second guide rails; the second guide rails are arranged at the upper end of the support frame; the sand feeding assembly comprises a sand
storage tank, a spiral rod, a scraper and a
vibration motor; the two ends of the sand
storage tank are slidably connected with third guide rails; the spiral rod is arranged inside the sand
storage tank; and the scraper and the
vibration motor are respectively arranged on the two sides of the bottom of the sand storage tank. According to the printing equipment provided by the invention, through the cooperation of the ink jet assembly, the sand feeding assembly and the sand box, the actions of automatic sand spreading, printing, sand surface
sedimentation, residual sand collection and the like can be realized, the
automation degree is high, andthe rapid forming of any complex part can be realized.