Casting sand box

The utility model provides a casting sand box which comprises a first half box, a second half box is arranged on one side of the first half box, a locking assembly is arranged at the joint of the first half box and the second half box, the locking assembly comprises an inserting rod and a screw, the screw is arranged in the middle of the inserting rod in a threaded mode, the screw and the inserting rod are coaxial, and the inserting rod is connected with the second half box in a threaded mode. A limiting block is fixedly arranged at one end of the inserting rod, a limiting plate is arranged on the inner side of the other end of the inserting rod in a sliding mode, and the end of the screw abuts against the limiting plate. According to the sand box, the inserting rod is inserted into the joint of the first half box and the second half box, then the screw rod is rotated to be screwed into the inserting rod, the limiting plate is pushed to move out of the inserting rod, at the moment, the limiting plate is match