Abstract: A sequence circuit display method for an injection molding machine which enables a sequence circuit corresponding to an operating step to be quickly displayed and enables the connection states of contacts, coils, etc. in a sequence circuit to be easily grasped when obtaining a grasp of the sequence circuit, comprising selectively inputting an operating step name in an injection molding machine from an input device to thereby display a sequence circuit including contacts, coils, etc. corresponding to the selected input operating step as a ladder diagram on a display device; comprising displaying a sequence circuit of an injection molding machine as a ladder diagram on a display device and selectively inputting one of the contacts, coils, etc. in the ladder diagram to thereby display a sequence circuit including contacts, coils, etc. corresponding to the selected input contact, coil, etc. as a ladder diagram on the display device; etc.

Abstract: Disclosed is a compression molding method comprising the steps of: calculating an average value of mold clamping forces sensed in a plurality of mold clamping mechanisms for clamping a stationary and a movable mold half; obtaining a first control signal on the basis of deviation between a preset target mold clamping force and an average value of sensed mold clamping forces; sensing positions of movable members of the mold clamping mechanisms; obtaining an average value of sensed positions; setting the average value as a successive target position; obtaining a second control signal on the basis of deviation between each of the sensed positions and the successive target position; and obtaining a clamping control signal for each of the clamping mechanisms by adding the first control signal and the second control signal. An apparatus suitable for implementing the method is also disclosed.

Abstract: In a method for controlling an induction motor 14, in which the speed of the induction motor 14 is controlled, by an inverter 21, to move and stop an actuator 22 at a predetermined position, a speed command 23 to be input to the inverter 21 is switched to an intermittent pulse signal 27 when the actuator 22 reaches a position B, a predetermined distance before, the predetermined position C. Thus, the system can be constructed at low cost, and sufficient practical positioning and stopping accuracy can be easily obtained.

Abstract: A sequence circuit display method for an injection molding machine which enables a sequence circuit corresponding to an operating step to be quickly displayed and enables the connection states of contacts, coils, etc. in a sequence circuit to be easily grasped when obtaining a grasp of the sequence circuit, comprising selectively inputting an operating step name in an injection molding machine from an input device to thereby display a sequence circuit including contacts, coils, etc. corresponding to the selected input operating step as a ladder diagram on a display device; comprising displaying a sequence circuit of an injection molding machine as a ladder diagram on a display device and selectively inputting one of the contacts, coils, etc. in the ladder diagram to thereby display a sequence circuit including contacts, coils, etc. corresponding to the selected input contact, coil, etc. as a ladder diagram on the display device; etc.

Abstract: Disclosed is a compression molding method comprising the steps of: calculating an average value of mold clamping forces sensed in a plurality of mold clamping mechanisms for clamping a stationary and a movable mold half; obtaining a first control signal on the basis of deviation between a preset target mold clamping force and an average value of sensed mold clamping forces; sensing positions of movable members of the mold clamping mechanisms; obtaining an average value of sensed positions; setting the average value as a successive target position; obtaining a second control signal on the basis of deviation between each of the sensed positions and the successive target position; and obtaining a clamping control signal for each of the clamping mechanisms by adding the first control signal and the second control signal. An apparatus suitable for implementing the method is also disclosed.