3D printing sand mold demolding device

The utility model discloses a 3D printing sand mold demolding device which comprises a supporting plate, the opposite faces of the supporting plate are respectively provided with a first sliding groove, a sliding rod is inserted into the first sliding grooves in a penetrating mode, the lower end face of the sliding rod is provided with a second sliding groove, a sliding block is movably arranged in the second sliding groove, a spring is arranged below the sliding block, and the spring is connected with the sliding rod. And the other end of the spring is connected with a connecting block. According to the demolding device for the 3D printing sand mold, the sliding rod and the supporting plate form a horizontal sliding structure through the first sliding groove, and the sliding block and the sliding rod form a transverse sliding structure through the second sliding groove, so that the position of a drill bit can be conveniently moved through the sliding rod and the sliding block, and a proper position of the sa