Gas filling device for accumulator and discharging apparatus with gas filling device

摘要

PURPOSE: To provide a gas filling device of an accumulator capable of easily compressing working gas of a desired pressure from a gas vessel into the accu mulator used for an injection device of a molding device and using the working gas in the gas vessel without any waste, and to provide the injection device having this gas filling device. CONSTITUTION: The gas filling device of the accumulator for filling the working gas of the required pressure into the accumulators 31 and 41 which are connected to a hydraulic circuit 11 for driving an injection cylinder 2 of the molding device to feed hydraulic pressure required for injection-filling a molding material to the injection cylinder 2 has a gas filling device 51 which boosts the pressure of the working gas stored in the gas vessel 80 higher than the pressure of the working gas in the gas vessel 80 by utilizing the hydraulic pressure from a hydraulic pressure source 21 feeding the hydraulic pressure to the hydraulic circuit 11, and fills the work gas into the accumulators 31 and 41.