When the molten plastic is injected into the mold cavity and cooled, the mold is opened and the product is taken out. The mold opening process is also divided into three stages. In the first stage, the mold is opened slowly to prevent the workpiece from tearing in the mold cavity. The second stage is rapid mold opening to shorten the mold opening time. The third stage is slow mold opening to reduce the impact and vibration caused by mold opening inertia.

Control of injection molding process conditions of belt carrying injection molding machine

At present, various injection molding machine manufacturers have developed a variety of program control methods, including: injection speed control, injection pressure control, plastic filling amount control in the injection mold cavity, back pressure and rotation speed of the screw, etc. The purpose of process control is to improve the product quality and maximize the efficiency of the machine.