PURPOSE: An injection mold with an automatic venting device is provided to enable easy manufacturing by omitting a process of machining fine clearance on the parting line between templates since air and gas from a cavity is smoothly discharged through the automatic venting device. CONSTITUTION: An injection mold comprises an automatic venting device(200). When melted resin is injected into a cavity, the automatic venting device expels the internal air and gas from the cavity. The automatic venting device is vertically installed on the top of the cavity. One side of the automatic venting device communicates with the cavity and the other side of the automatic venting device communicates with the outside of the mold.
