| 摘要 |
PURPOSE:To shorten the mold exchange time and consequently enhance the productivity by a method wherein a coincidence signal is issued in order to stop a rotary driving mechanism when the signal read at a reading section coincides with the signal set at a setter by comparing both signals with each other. CONSTITUTION:No.1 mold 21 - No.4 mold 24 are fixed onto the top surface of a table 13 by means of clamping mechanisms. A marker 52 is fixed onto the side surface of a stationary mold 21A or of a movable mold 21B. A start signal 31 is issued in order to rotate a motor 15 and further sent through an indexing position detecting section 37 to a comparator 38. When the marker 52 faces opposite to lamps or the like 54 with the rotation of the table 13, phototransistors or the 37 to the comparator 38. When the signals sent from the setter 32 coincide with the signals sent from the phototransistors or the like 55, the comparator 38 stops the motor 15 in such a state that the No.3 mold 23 is seated at the position opposite to an injection cylinder 25. |
