| 摘要 |
PROBLEM TO BE SOLVED: To provide an injection molding machine having an oil feeder constituted so as to be capable of discriminating even the abnormality of an oil feed system at every oil feed place. SOLUTION: The oil from an oil tank 11 is fed to parallel distributors 14-1 and 14-2 and an advance distributor 15 through a changeover valve 13 by driving a pump 12 and successively fed to each of oil feed places by the parallel distributors 14-1 and 14-2 and the advance distributor 15. The pressure of the oil at the discharge port of the pump is detected by a pressure sensor 16 and stored in a memory/arithmetic unit 17. The waveform of the detected oil pressure when the oil is fed normally is stored as reference data and the time region corresponding to the oil feed place is measured to be set and stored. Further, a monitoring width is also preset. The reference data and the waveform of the detected oil pressure detected thereafter are displayed on a display/input device 18. When the waveform of the detected oil pressure is deviated from the monitoring width and abnormal, an abnormal oil feed place is calculated based on the set time region. Oil feed abnoramlity can be detected along with the abnormal oil feed place, and repairing and restoration become easy. COPYRIGHT: (C)2004,JPO&NCIPI
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