| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a hybrid power supply type injection molding machine which is free from a damage caused by an interruption or instability of electric power supply from a commercial power source or in-house power generating facility. <P>SOLUTION: An electric power comparison is made between a commercial power source PSLY supplied to the injection molding machine and an output of a storage 40, and if the commercial power becomes below a predetermined value, it is switched to the storage side. The determination of switch by the electric power comparison is also made to avoid consumption of commercial electric power and use electric power of the storage positively. The storage is charged with a natural energy driven power generator 12, the commercial electric power, a regenerated power from a servomotor for electric injection molding machine and so on. Further, an elsewhere stated electric power addition device 22 connected to the storage is installed, to prevent a supply voltage of the commercial electric power from becoming temporarily unstable by superimposing its output on the output side of a switching device. In this way, the damage caused by the interruption or temporal instability of the commercial power can be avoided by installing the storage exclusively for the injection molding machine. <P>COPYRIGHT: (C)2004,JPO |
