Method and system for controlling injection molding apparatus

Details Method and system for controlling injection molding apparatus Method and system for controlling injection molding apparatus

1996-10-18

1999-01-19

Heitbrink, Jill L.

Plastic and nonmetallic article shaping or treating: processes

With measuring, testing, or inspecting

2643281, 425150, 425590, 36447505, B29C 4580

Patent

active

058611185

ABSTRACT:
An injection molding machine includes a feedback control system for controlling both the speed and position of a control object, such as a movable platen or an injection screw. The feedback control system includes a driving mechanism connected to the control object and a monitor monitoring the position of the control object. The monitor transmits signals representative of the sensed position of the control object. A speed control system controls the driving mechanism until the control object reaches a threshold position. Thereafter, a position control system controls the driving mechanism. A switch is provided to change the feedback control system from the speed control system to the position control system.

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