Patent ID: 8632335

Claim:
An injection molding apparatus, comprising: a mold; an injecting device for melting plastic and injecting molten plastic into the mold; a platform for loading and controlling the mold and the injecting device; and two heat insulation assemblies, each of the heat insulation assemblies comprising: a metallic plate; and a pipe member mounted in the metallic plate for receiving hot liquid to heat the metallic plate; wherein the mold is sandwiched between and mounted to the two metallic plates of the two heat insulation assemblies, one of the metallic plates is mounted to and sandwiched between the mold and the injecting device, the other metallic plate is mounted to and sandwiched between the mold and the platform, and the metallic plates are heated by the hot liquid to a predetermined temperature lower than a preset temperature of the mold to prevent the mold from transferring heat to the injecting device and the platform.