METHOD OF AND DEVICE FOR AUTOMATIC FEEDING OF LUBRICANT |
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| 申请号 | EP90912389 | 申请日 | 1990-08-15 | 公开(公告)号 | EP0439626A4 | 公开(公告)日 | 1992-01-02 |
| 申请人 | FANUC LTD.; | 发明人 | YAMAMURA, MASATO ROOM 8-107 FANUC MANSHONHARIMOMI; NISHIMURA, KOICHI; SATO, TAKASHI FANUC DAI-3 VIRA-KARAMATSU; | ||||
| 摘要 | A method of and device for enabling automatic and timely feeding of lubricant to mechanisms of a machine driven by a motor. An amount of increase in driving electric current for the mold-clamping servomotor (12) in the course of change from an appropriate lubrication state to an inappropriate one in the mold-clamping mechanism (10) of an injection molding machine is predetermined for every combination of the kind of an injection molding machine, conditions for injection molding, and kind of grease. Then, while executing a normal injection molding cycle in an appropriate lubrication state, a standard value of current to drive the motor is determined on the basis of motor driving normal current in a specific position to which a movable platen (14) having performed current measurement for the above-said predetermination is displaced and an increase in motor driving current so that the standard value and the specific position to which the movable platen is displaced are stored in the memory of a numerical control device (50). The control device, in response to grease feeding time judging instruction, drives a grease pump (40) when a detected motor current in the specific displaced position of the movable platen exceeds the standard value. Grease from the grease pump is distributed to each of a plurality of parts of the mold clamper in quantity as required through a distributor (43). | ||||||
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