Apparatus and method for injection molding

摘要

An injection molding apparatus includes a set of injection moulds and a set of cooling moulds. The set of injection moulds include a male injection mould and a female injection mould that are closed together to define an injection mould cavity. The set of cooling moulds include a male cooling mould and a female cooling mould that are closed together to define a cooling mould cavity. Molten plastic material is injected into the injection mould cavity to form a plastic article. The male injection mould and the male cooling mould are identical and interchangeable to enable the plastic article to be transferred to the cooling moulds. While the plastic article is accommodated in the cooling mould cavity and being cooled therein, molten plastic article is injected again into the injection mould cavity to form another plastic article. Thereby, the injection molding cycle time is reduced and the efficiency is improved.