| 摘要 |
PURPOSE:To make purging complete automatically, efficiently and in a short period of time, by providing a setting device designating resin at the time before and after a change, a device stipulating instructions of purging action corresponding to combination of the resin, and a device controlling a molding machine according to the instructions of the purging action from the stipulating device. CONSTITUTION:Material resin B is supplied within a cylinder 12 under a state wherein resin A is left behind within the cylinder 12.A changeover switch of a mode of a switch group 19 is changed over to a purging mode. Then the prepurging resin A and the postpurging resin B are designated by a set button of the switch group 19. When a starting switch is pressed, a control unit 18c controls a band heater 13 and at the same time motion instructions of a screw is generated by a motion instruction generating device 18d of a purging screw, according to which the screw 14 is driven by a screw driving hydraulic pressure circuit 17. |
