Injection mold

An injection mold for molding a product therein, comprising:

• a male mold including a male mold plate, and a male core mounted in the male mold plate;
• a female mold including a female mold plate and a female core, the female mold being engaged with the male mold with a bottom of the female core matched with a top of the male core to define a shaping chamber between the female core and the male core, the female mold plate defining a female receiving space concaved upward from a bottom thereof for receiving the female core therein, and a first insertion groove concaved downward from a top thereof and connecting with the female receiving space, the female core defining a first channel concaved downward from a top thereof, and a plurality of slots with tops thereof connecting with a bottom of the first channel and bottoms thereof penetrating through the bottom of the female core to connect with the shaping chamber;
• an ejection plate defining a second insertion groove vertically penetrating therethrough, and mounted on the female mold with the second insertion groove corresponding to the first insertion groove;
• and
• an insert element having a top thereof inserted into the second insertion groove and a bottom thereof stretched into the first insertion groove to cover the top of the female core and cooperate with the first channel and the slots to define a runner, the insert element defining a first injection groove vertically penetrating therethrough for receiving an injection feeder nose which is used to inject melted plastic materials into the runner, then the melted plastic materials flowing into the shaping chamber to mold the product in the shaping chamber.