| 摘要 |
PURPOSE: To obtain a good formed product without unevenness in the formed product quality at each shot by repeatedly correcting die opening and die closing until a gap between the joint surfaces of the die is set in the preset allowance and injecting and filling up molten metal after setting them in the allowance. CONSTITUTION: A measuring signal of the gapΔI between the joint surfaces of the die measured at the time of completing the die clamping is inputted to a control unit 20 through an amplifier 50. In the control unit 20, the pressure signals at the head side and the rod side of an injection cylinder 6 are inputted through a pressure detector 6B and an amplifier 30. The injection force of the injection cylinder 6 as the injection force signal detected by a load sensor 6E is inputted into the control unit 20. Further, the positional signal of a positional sensor 61 for detecting the position of a piston 6A is inputted to the control unit 20. The control unit 20 analyzes, compares and judges the numerical information obtd. as various kinds of the inputted signals and an operational command is transmitted to power means of the injection cylinder 6, die clamping cylinder 10, etc.
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