Casting sand box

The utility model discloses a casting sand box which comprises a bottom sand box body, a top sand box body is arranged above the bottom sand box body, first fixing blocks are fixedly connected to the front face and the back face of the bottom sand box body respectively, and second fixing blocks are fixedly connected to the front face and the back face of the top sand box body respectively. The front face of the bottom sand box and the back face of the bottom sand box are each provided with a fixing frame, and two sliding grooves are formed in the inner side wall of each fixing frame. According to the device, through cooperation of the fixing frame, the nuts, the threaded rods, the rolling bearings, the pressing plate, the sliding grooves and the sliding blocks, the pressing plate can move in the fixing frame, so that the first fixing block and the second fixing block can be fixed, installation of the bottom sand box and the top sand box is completed, use is convenient, meanwhile, the fixing frame is an indepe