| 摘要 |
PROBLEM TO BE SOLVED: To realize the continuous change of a pressure set value by remote operation without turning the whole device into a large-sized and complicated one and the supply of high pressure gas, the pressure of which is stabilized. SOLUTION: As the constituent parts of a gas feeding device for supplying high pressure gas within a mold at a gas injecting injection molding, a pressure transmitter 14 for detecting the pressure of a feed line 10 for feeding gas, a control unit 40 including a controller, which two-position-controls an automatic on-off valve 12 on the basis of the electric signal sent from the pressure transmitter 14 and a constant flow valve 13, which controls gas flow rate to a predetermined flow rate, are provided. Thus, the continuous pressure setting by remote operation is realized by the minimum constituent parts. In addition, the striking change of gas pressure is suppressed and the stable feeding of gas becomes possible. |
