Patent ID: 8851876

Claim:
An injection mold, comprising: a first plate; a second plate; a movable plate; a ball screw rotatably supported by the first plate; a ball nut fixed to the movable plate, the ball nut being threadedly engaged with the ball screw, the movable plate being moved by the ball nut between the first plate and the second plate; a transmission shaft rotatably supported by the second plate, one end of the transmission shaft comprising an injection screw coaxially positioned with the ball screw, another end of the transmission shaft rotatably connected to the movable plate; a first driving assembly comprising a servomotor fixed mounted on the first plate, the injection motor for rotating the ball screw; and a second driving assembly comprising a metering motor mounted on the second plate for rotating the transmission shaft to move the injection screw: wherein the first plate and the second plate are fixed relative to each other, and the moveable plate is capable of moving between the first plate and the second plate.