Plastic product manufacturing method and all-electric injection-molding machine

An all-electric injection-molding machine for injecting a plastic substance into a mold, the all-electric injection-molding machine cooperating with a cloud server and comprising:

• a clamping shaft, operatively connected to the mold, for opening or closing the mold;
• a cylinder body, communicated with the mold, for accommodating the plastic substance;
• a screw slidably and rotatably disposed in the cylinder body;
• an injection shaft, operatively connected to the screw, for driving the screw to slide relative to the cylinder body;
• a material storage shaft, operatively connected to the screw, for driving the screw to rotate relative to the cylinder body;
• a controller for downloading optimal injection conditions from the cloud server according to a machine number related to the all-electric injection-molding machine, a mold number related to the mold, and a password;
• a first driver for generating an opening mold speed-command curve and a closing mold speed-command curve according to the optimal injection conditions, wherein the first driver is capable of driving the clamping shaft to open and close the mold respectively according to the opening mold speed-command curve and the closing mold speed-command curve;
• a second driver for generating an injection speed-command curve and a storing material speed-command curve according to the optimal injection conditions, wherein the second driver is capable of driving the injection shaft to move the screw toward the mold so as to inject the plastic substance into the mold according to the injection speed-command curve at an injection stage, and driving the injection shaft to move the screw away from the mold according to the storing material speed-command curve at a material storage stage;
• and
• a third driver for driving the material storage shaft to actuate the screw to push the plastic substance outside of the cylinder body into the cylinder body at the material storage stage.