The present invention relates to a safety device of the injection mold having an exhaust pipe path, the safety device of the present invention is a mounting plate having a communication groove and the operating chamber, a fixed plate fixed to the lower surface of the mounting plate and the exhaust hole is formed, It consists of a slide operating side installed in the operating room of the plate, and the safety device body is fixed to the installation space provided on the mold partition surface communicating with one end of the cavity and runner, so that the slide operation operates in parallel with the mold partition surface. By ensuring a sufficient exhaust passage through the side, the remaining air can be forced out as well as the resin flow pressure prevents the resin from entering the exhaust pipe path by closing the exhaust passage inside the safety device by the slide operation valve. It can work.
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