Improved core print structure

The utility model particularly discloses an improved core print structure, comprising a locating reference plane and a sand filling surface, wherein the sand filling surface is higher than the locating reference plane, and the sand filling surface and the locating reference plane are parallel to each other and in stepped-shaped arrangement. The improved core print structure has the beneficial effects that the processes of manufacturing a core grinding jig, checking the size of the core grinding jig and the like are omitted; the operation steps such as core grinding and core regulating are omitted, and quality problems caused by the operation steps are avoided; the size precision of the locating reference plane is improved, the core feeding process is simple and convenient and the precision of a casting is improved; and the labor intensity is reduced, the labor efficiency is increased, and the cost is reduced.