A plastic injection mold is corresponding with a plastic injection molding machine. It generally consists of feed system, formed parts(including cavitis, punches, mold core and etc.), demoulding system, guidance system, temperature-control system, fix and installation parts. There are many ways to sort them. Sorted by the varieties of plastics, there are thermosetting plastic injection molds and thermoplasticity ones; by the varieties of injection machines, there are horizontal ones, vertical ones, and angie type ones; by the ways of installation there are movable ones(used on the vertical injection machines) and fixed ones; by the numbers of the impression, there are single impression ones and multi-impression ones; by the numbers of the parting surfaces, there are single parting surface ones and multi-parting surface ones.