The system adopts fully automatic control, requiring no manual intervention for adjusting the mixing ratio. Operators only need to input the sand-resin ratio on the equipment’s touch screen, after which the system will automatically regulate the proportion without any mechanical operations such as manual valve adjustment. Both resin and sand are dosed by a weighing system for digital batching, with production data recorded in real time. The mixing ratio can be adjusted at any time according to sand quality and resin materials from different manufacturers, which facilitates the quality control of sand cores.