Injection molding machine metering and control device

Details Injection molding machine metering and control device Injection molding machine metering and control device

2006-04-04

2006-04-04

Heitbrink, Tim (Department: 1722)

Plastic article or earthenware shaping or treating: apparatus

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

Molding pressure control means responsive to pressure at...

C425S150000

Reexamination Certificate

active

07021917

ABSTRACT:
The retraction of the screw is controlled on the basis of the pressure deviation between the set resin pressure and the detected resin pressure. Furthermore, the screw is caused to rotate at a set speed. Moreover, when the deviation between the metering completion position and the current screw retraction position drops to a value that is equal to or less than a set value, control of the retraction of the screw based on the pressure deviation is stopped, and the control is switched to positioning control based on the positional deviation. Furthermore, a screw rotational speed command in which the pressure deviation component between the set resin pressure and the current resin pressure is corrected from the screw rotational speed component that is decelerated in proportion to the positional deviation is determined and output.

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Notice of Reasons for Rejection, mailed Feb. 8, 2005.

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