| 摘要 |
PROBLEM TO BE SOLVED: To provide a controller of an injection molding apparatus capable of detecting an amount of a back-flow of a resin without using any specific mechanism. SOLUTION: In the controller, Fig.4(a) represents a case where the amount of the back-flow resin is less because of early closing of a check valve of back-flow, wherein the maximum value of a rotating angle of a screw is small. Fig.4(b) represents a case where the amount of the back-flow resin is increased because of late closing of the check valve of back-flow, wherein the maximum value of the rotating angle of the screw is large. Fig.4(c) represents a case where the amount of the back-flow resin per time is large and the amount of the back-flow resin is increased. The amount of the back-flow resin can be evaluated by rotating angle of a screw as an indicator, and the rotating angle of a screw is based on a detecting signal from an encoder equipped in a measuring servomotor. COPYRIGHT: (C)2010,JPO&INPIT
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