Q. What is the use of ejector pin?

Answer

Injection molding requires the employment of long pins called ejector pins to expel the finished product from the mold. They are typically composed of high-quality steel and are used to aggressively remove the solid object from the mold. Knockout pins (or KO pins) also go by the name knockout pins. These pins are the most cost-effective ejection method since they may be extended and retracted to force the part out of the mold. Pins may leave markings, thus they are often inserted after the pieces have cooled down to prevent distortion. Shapes and sizes of ejector pins range from round to bevel-headed to straight to cylindrical.