| 摘要 |
<p>In a core driving device (40) of this invention for an injection molding machine, for movable cores (11, 12), which define molding cavities (31, 32) in cooperation with the metallic molds (10, 20), to be accurately driven in connection with a molding cycle, a servomotor (41) is used as a driving source and connected to a control device (60) to be operated for driving and controlling molding units (70) of various kinds so as to enable the servomotor and molding units to operate under control by said common control device, and, when a movable metallic mold proper (14) to which screw shafts (43, 44) are fixed integrally with the movable core is fixed to a movable mold fixing part (13) supporting a driven shaft (42) whose one end fits into the output shaft (41a) of the servomotor fixed to a movable platen (1), the servomotor is connected to the movable core through the driven shaft, gears (45a, 45b and 45c), and the screw shaft so as to make it easy to fix the metallic mold to the molding machine.</p> |
