Sand blasting machine for tire mold machining

The utility model relates to the technical field of sand blasting machines, in particular to a sand blasting machine for tire mold processing, which comprises a box body, a blanking container is mounted on the left side surface of the box body, a high-pressure air pipe is communicated with the left side surface of the box body, an outlet of the blanking container is communicated with the high-pressure air pipe through a three-way connector, and one end, extending into the box body, of the high-pressure air pipe is communicated with a nozzle; a three-legged supporting assembly is arranged on the bottom face of the box body and comprises a vertical rod, a sliding sleeve is slidably connected to the outer wall of the vertical rod, a fixed round block is fixedly connected to the top end of the vertical rod, three supporting legs are hinged to the outer wall of the sliding sleeve in a circumferential array mode, and three connecting rods are hinged to the outer wall of the fixed round block in a circumferential ar