① Shorten the opening stroke of the injection mold to the minimum necessary to make the parts and runners fall off;

② Eliminate any factors that make ejection difficult, like flashing around the thimble (piping);

③ shorten the ejection stroke to the minimum value necessary;

④ Use the fastest mold opening and closing speed, and at the same time, it is necessary to stop and close slowly to prevent damage to the injection mold;

⑤ Look for all the delays in mold closing and mold clamping pressure, which indicate the failure of mechanical or hydraulic valves;

⑥ A large number of assembly activities in the injection mold also increase the opening time of the injection mold. A little consideration of product design (reduction of undercuts) can often automate or semi-automate the ejection action;

⑦If the delay is caused by the loss of the injection mold, the mold should be repaired to reduce the delay;

⑧Cultivation of good injection molding machine operation habits is of great benefit to improve machine life and production safety.