Extrusion casting die with cold material blocking function

The utility model relates to the technical field of squeeze casting dies, in particular to a squeeze casting die with a cold charge blocking function. In the extrusion casting process, high-temperature molten metal enters the injection chamber from the machine edge furnace through the pouring hole and then enters the cavity, and the part, making contact with the inner wall of the injection chamber, of the molten metal can be rapidly cooled. Round holes formed by the first arc-shaped notches and the second arc-shaped notches can form protruding edges in the injection chamber, molten metal making contact with the inner wall of the injection chamber can be blocked by the protruding edges and is prevented from entering a product cavity, and therefore the casting defects such as cold shut and cold lines on the surface of a product are reduced. And after the product is formed in the cavity, the first sliding block and the second sliding block retreat from the injection chamber, so that the product can drive a mater