| 摘要 |
PURPOSE:To obtain the change characteristics of operating states as a variable of pressure by a method wherein the pressure in the pressure control region in an injection molder, which has the pressure control region in its molding cycle, are continuously detected so as to detect the physical quantities related to the operating states (the values of pressure and the like) when the detected pressure shows the change in pressure by the certain fixed preset pressure. CONSTITUTION:In the pressure control region Zp of molding cycle, time counting is started by means of a time function equipped in a detection controller 54 and at the same time the value of in-mold pressure at the time, when the pressure control region starts, and the time elapsed since said starting time are detected and stored in a RAM56 as first data. The data stored in the RAM56 is displayed on a display 40 and recorded by a recording device 57. On the hand, the detection signals of the in-mold pressure are continuously sent from a pressure sensor 52 to the detection controller 54 in order to calculate the pressure deviation Pd by comparing them with the value of the pressure detected at early stage. On the other hand, the certain fixed pressure Po, which determines the interval of sampling, it set by a setter 55 of pressure interval. When the pressure deviation Pd coincides with said certain fixed pressure Po, the value of in-mold pressure at that time is detected and stored in the RAM56 as second data.
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