Die-casting die with replaceable die core

The utility model discloses a die-casting die with a replaceable die core, which comprises a fixed die, the left side surface and the right side surface of the fixed die are fixedly connected with box bodies, and the inner side wall of each box body is fixedly embedded with a rolling bearing and a sealing bearing. According to the device, a movable plate is driven to move through cooperation of a threaded rod and a threaded cylinder, and through movement of the movable plate, a sliding rod is matched with a push plate to drive a plurality of limiting rods to move out of a limiting cylinder and release limiting of a mold core, so that the mold core is conveniently taken out of the fixed mold; and meanwhile, the push plate is used for pushing the limiting rod to extend into the limiting barrel, and then the mold core is limited according to the limiting barrel and the limiting rod, so that a worker can conveniently install and fix the mold core, the mold core is convenient to replace in the mode, and the work p