Sand cleaning device for 3D printing sand mold surface

The utility model relates to the field of 3D printing sand molds, in particular to a 3D printing sand mold surface sand cleaning device which comprises a sand cleaning box, a supporting plate is fixedly connected to one side of the sand cleaning box, a clamping groove is formed in the top of the supporting plate, a collecting box is movably connected to the inner wall of the clamping groove in a clamped mode, and a supporting rod is fixedly connected to the inner bottom wall of the sand cleaning box. The top of the supporting rod is fixedly connected with a supporting frame. Through the arrangement of the collecting box, the first auxiliary plate, the first magnetic block and the second magnetic block, the first auxiliary plate rotates so that a space can be formed between the inner top wall of the channel and the top of the first auxiliary plate, floating sand can enter the collecting box through the channel, and then the device can conveniently collect the cleaned floating sand; and after the sand cleaning