geopiet Nov 24, 2022:

re: two-plate, cold-runner molds Two-Plate crate Moulds


Figure below shows the main features of a two-plate injection mold, the simplest and most common type. Cooling in the cavity inserts and core inserts is not shown, but should be provided. Pressure and temperature transducers are not shown, but should be strategically located in accord with good instrumentation practices. The knockout bar, in this design, is stationary so that when the mold opens the ejector plate does not move and the parts are lifted off the cores. A Z-shaped sprue puller pulls the sprue and runner off the stationary A plate. The sprue puller moves out of its hole during mold opening and the sprue can fall off with the parts.