Injection mold capable of discharging air after mold assembly

The invention discloses an injection mold capable of discharging air after mold assembly. The injection mold structurally comprises a top seat, an upper mold, an exhausting mechanism, a lower mold, aconnecting block and a base; the top seat is connected to the top of the upper mold, and the upper mold is connected to the lower mold through the exhausting mechanism. Compared with the prior art, the injection mold has the beneficial effects that based on the Lenz law, rigid collision during mold assembly can be prevented, and most air in a mold cavity can be discharged in time through slow dropping; after mold assembly is carried out, based on the magnetic attraction principle, magnetic attraction force is used as a power source, the spring characteristics are used, multiple air exhaust groups can simultaneously conduct air exhausting, and the air exhausting efficiency is improved. The triple revolution number of a planetary gear set is used, the air exhausting amount is increased, airin the mold cavity is completely discharged, air and melt mixing is avoided, generation of bubbles is prevented, the mechanical strength, weight and appearance of plastic parts are not affected, the quality of the plastic parts can be guaranteed, the exhausted gas can cool the plastic parts after mold opening, and demolding of the plastic parts is facilitated.