INJECTION MOLDING MACHINE, HYDRAULIC ACTUATING MECHANISM OF INJECTION MOLDING MACHINE, AND CONTROL METHOD THEREFOR

摘要

The present invention provides a hydraulic actuatingmechanism of an injection molding machine, in which a pluralityof hydraulic actuators are driven by one hydraulic pump, whereinthe hydraulic pump of the hydraulic actuating mechanism is avariable discharge pump having the maximum necessary deliverycapacity at least for each of the hydraulic actuators at the timeof the highest rotational speed of the pump; the discharged fluidpressure is controlled by a discharge cutoff function of a pressurecompensator ancillary to the variable discharge pump; and thepump is driven by a motor whose rotation can be controlled ina stepless mode.