| 摘要 |
PROBLEM TO BE SOLVED: To improve the quality characteristics of a substrate by providing a spring between the parting surfaces of fixed and movable molds so as to energize the molds in an opening direction and controlling a drive source by using the distance detection signal between two platens and the pressure detection signal showing mold clamping force to control a drive source to prevent the generation of burr in the outer periphery of a substrate. SOLUTION: At the beginning of filling, a pressure control valve 42 is controlled by the platen interval distance L detected by a distance sensor 28 on the basis of an initial platen interval distance L0 and mold clamping force is controlled on the basis of the pressure sensors 27-1, 27-2 detecting the oil pressures in oil cylinders. Next, the detection signal of a screw position sensor is monitored and, at a time of arrival at a predetermined position, a filling process is changed over to a dwelling process. The time elapse from the changeover point of time is monitored, and, after the elapse of a predetermined time, the function pattern up to the distance Le from the control start platen distance L0 to a control completion platen is generated and the a pressure control valve 42 is controlled so that the platen distance L follows control completion pattern. When the function pattern coincides with the control completion platen distance Le, control is set to an object until the completion of cooling. |
