First, small plastic molds can work normally because the push rod is relatively light, and the push plate is directly fixed on the fixing plate of the ejector rod, the pull rod and the counter ejector rod with screws.

Secondly, for larger plastic molds, because the ejector pin fixing plate and the push plate are relatively large and heavy, it is necessary to install guide rods specially. The ejector pin fixing plate and the push plate slide back and forth on the guide rod.

Die-casting dies are generally equipped with guide slide bars, which are specially used for guiding and sliding of push plates.