Patent ID: 8500426
Filing Date: 2013-08-06
Classification: B29C

Abstract:
1. An apparatus for controlling counterpressure and temperature in mold cavity, comprising: a mold, composed of two mold-halves that can be controlled to open and close, having a runner and at least one air passage that are configured for communicating with at least one mold cavity formed inside the mold; a counterpressure gas supplying device, for supplying the gas that is pressurized into a counterpressure gas to the mold cavity through the at least one air passage; a high-temperature gas supplying device, for supplying the gas that is heated into a high-temperature gas to the mold cavity through the at least one air passage; and a logic control valve, coupled to the counterpressure gas supplying device, the high-temperature gas supplying device, and the at least one air passage of the mold, for controlling the gas exiting the counterpressure gas supplying device and the gas exiting the high-temperature gas supplying device, and the gas to flow in and out of the mold cavity through the at least one air passage.