3D printing sand cleaning sand core structure

The utility model discloses a 3D printing sand removal sand core structure which comprises a sand core, a cavity is formed in the sand core, a sand removal hole is formed in the bottom of the sand core, a pouring gate is formed in the top of the sand core, the pouring gate and the sand removal hole are communicated with the cavity, a plug is arranged at the sand removal hole and arranged on a fixing plate, and the sand removal hole is communicated with the pouring gate. The fixing plate and the plug are integrally arranged, and the plug is matched with the sand cleaning hole. One or more technical schemes provided in the embodiment of the utility model at least have the following technical effects or advantages: an integrated sand core structure is adopted, so that a crack caused by parting of a molded surface is solved; the sand cleaning hole is formed in the bottom of the sand core, the plug is arranged on the sand cleaning hole, the sand cleaning hole is formed in the bottom of the sand core, high-pressure