Injection device and die casting machine thereof

The utility model discloses an injection device and a die casting machine thereof, taking one of the injection devices as an example, the injection device comprises an injection cylinder, and an inlet, a blanking cavity, a heating cavity, an injection cavity and an outlet which are communicated with one another are sequentially arranged in the injection cylinder along the axis direction of the injection cylinder; the material pushing hammer is connected to the inlet in a sliding mode, the material pushing hammer is provided with a material pushing end, the material pushing end moves in the axis direction of the injection barrel, and the material pushing end can push materials to move to the heating cavity, the injection cavity and the outlet from the material falling cavity; the feeding bin is connected to the injection barrel, and the feeding bin is communicated with the blanking cavity; and the heating mechanism is connected to the injection barrel and surrounds the heating cavity. Compared with the prior a