SERVO POWER SUPPLY DEVICE OF ELECTROMOTIVE INJECTION MOLDING MACHINE AND CONTROL METHOD FOR SERVO POWER SUPPLY DEVICE OF ELECTROMOTIVE INJECTION MOLDING MACHINE

摘要

PROBLEM TO BE SOLVED: To provide a servo power supply device for an electromotive injection molding machine, which is capable of being constituted within one power supply system even in the case that servomotors different in voltage class are together mounted on one injection molding machine, resulting in its simple and inexpensive constitution and thus the realization of a servo system of high efficiency.;SOLUTION: Smoothing condensers C1 and C2 are provided on P-N between the DC voltage lines of a servo power supply in series to form an intermediate potential point C of DC voltage and inverters (1' and 2') for driving servomotors 11 and 12 are provided to P-N between the DC voltage lines while servo-amplifiers 3' and 4' for driving servomotors 13 and 14 are provided between the high voltage side (P-side) of the DC voltage lines and the intermediate potential point C or between the low voltage side (N-side) of the DC voltage lines and the intermediate potential point C.;COPYRIGHT: (C)2007,JPO&INPIT