Patent ID: 8047833

Claim:
An injection mold for molding a lens barrel, comprising: a female die comprising a female die plate and a female die core protruding from the female die plate, a male die comprising a male die plate and a male die core protruding from the male die plate, and a screw die for connecting to the female die and the male die; wherein, the female die, the male die and the screw die cooperatively define a mold cavity, the male die defines a through hole passing through the male die plate and the male die core, the distal end of the female die core faces the through hole, an air gap is formed between the distal ends of the female die core and the male die core and communicates with the mold cavity and the through hole, and the through hole and the air gap are configured for discharging air in the mold cavity during molding the lens barrel.