Speed control unit for injection molding machines

Details Speed control unit for injection molding machines Speed control unit for injection molding machines

1994-10-04

1996-05-21

Heitbrink, Tim

Plastic article or earthenware shaping or treating: apparatus

Control means responsive to or actuated by means sensing or...

Feed control of material en route to shaping area

264 407, 425149, B29C 4577

Patent

active

055183905

ABSTRACT:
The speed control unit for open loop control of the speed of an actuator 2 of an injection cylinder according to setpoint Vs of speed. The speed control unit includes a measurement sensing unit 3 to detect speed measurement Vd and pressure measurement Pd from the run of the actuator 2. An arithmetic processing unit 4 calculates a correction value Av for command value Vc of speed according to a speed measurement Vd, a pressure measurement Pb, a setpoint Vs of speed and/or a setpoint Ps of pressure, in cases where the speed measurement Vd is found deviated from the setpoint Vs of speed.

REFERENCES:
patent: 3932083 (1976-01-01), Boettner
patent: 4411609 (1983-10-01), Yoshii et al.
patent: 5176858 (1993-01-01), Tsukabe et al.
patent: 5260010 (1993-11-01), Yokota
patent: 5425906 (1995-06-01), Hashimoto

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