Diesel engine block water sleeve core cold box core casting die

The utility model discloses a diesel engine body jacket core coldbox casting die, including an upper core box and a lower die. A two left and right group of core boxes are arranged crosswise and abreast on the base plate of the lower die, the left core box and the right core box respectively includes a left die and a right die. An interlock die sinking mechanism is arranged on the two side end surfaces of the left core box and the right core box. Moreover, an open-close die orientation guide rail mechanism, a mold-locking structure, an automatic top core structure, a hollow shape forming structure and a lateral gas passage are arranged on the corresponding positions. The utility model has the advantages of enhancing the sand core quality, and enhancing the sand core finished product rate and the production efficiency.