A hollow forming
machine for injecting, drawing and blowing plastic by a one-
step method comprises an installation
machine base, an
injection device, a fixed
mount, an injection
bottle blank component, a drawing-blowing component, a
blow molding die
assembly mechanism
assembly, a rotary template
assembly, an injection
station, a product demoulding component and a quick die change mechanism, wherein the
injection device is arranged at one side of the installation
machine base, and the fixed
mount is arranged at the other side of the installation machine seat; the injection
bottle blank component is fixed on the fixed
mount; the
blow molding die assembly mechanism assembly is arranged on the installation machine base and is matched with the drawing-blowing component; the injection
station is arranged below the injection
bottle blank component and is used for placing a bottle blank die; the rotary template assembly is arranged below the injection bottle blank component; the upper of the rotary template assembly is driven by a power motor to rotate, and the lower thereof is provided with an oil cylinder; a shaped semi-finished bottle blank is injected in the injection bottle blank component; and the oil cylinder drives the rotary template assembly to go up, and then the rotary template assembly is driven by the power motor to rotate so as to drive the semi-finished bottle blank to enter into the position of a drawing-blowing die, thus the rotary template assembly goes down into the drawing-blowing die under the driving of the oil cylinder, and is drawn and blow molded into a finished bottle. The invention achieves circular production, improves production efficiency, saves energy by two thirds as compared with the existing production method, and fills domestic blank.