Positioning device for closing casting iron sand box

The utility model discloses a positioning device for mould closing of casting iron sand boxes, which comprises an upper box body, a first fixing frame, a second fixing frame and a lower box body, movable frames are movably mounted on two sides of the second fixing frame, and the movable frames and the first fixing frame are limited and fixed through threaded rods. Fixing seats are fixedly mounted at the front ends and the rear ends of the first fixing frame and the second fixing frame, first clamping seats and second clamping seats are movably mounted on the inner sides of the fixing seats respectively, an upper box body is clamped and fixed between the first clamping seats, and a lower box body corresponding to the upper box body is clamped and fixed between the second clamping seats; and the first clamping seat and the second clamping seat are limited and fixed through a positioning column. The upper box body and the lower box body can be fixed and prevented from loosening through mutual matching of the mov