| 摘要 |
PROBLEM TO BE SOLVED: To use an optimum control gain when pressure compensation is performed based on a deviation of the actual injection pressure from a set injection pressure, and thereby to enable smooth injection pressure response.SOLUTION: A molding machine controlling apparatus includes: a pressure detector 20 which detects a pressure of a material in a cylinder 11; and a pressure compensator 111 which compares, in injection control, a preset value of an injection pressure with an actual measurement value of the injection pressure detected by the pressure detector 20, generates an injection speed command to a servo motor 14 based on a comparison value, and varies a proportional gain KP based on a deviation δ1 of the actual measurement value of the injection pressure from the preset value of the injection pressure. |
