METHOD OF SETTING WAVEFORM OF PRESSURE IN INJECTION PRESSURE CONTROL AND INJECTION MOLDING MACHINE

Title:

METHOD OF SETTING WAVEFORM OF PRESSURE IN INJECTION PRESSURE CONTROL AND INJECTION MOLDING MACHINE

Document Type and Number:

WIPO Patent Application WO/1992/011994

Kind Code:

A1

Abstract:

A waveform of injection pressure as being a target value of feedback control of injection pressure is set in conformity with a real waveform of injection pressure detected when a good molded item is obtained. Or, setting is made possible by correcting a waveform of injection pressure which has been already stored or a real waveform of injection pressure. A waveform of injection pressure which has been already stored or a real waveform of injection pressure is displayed on a screen of a display device (T1). By specifying two points on the waveform of injection pressure thus displayed, the waveform of pressure is corrected in conformity with a line connecting these two points (T3, T6, T8). Alternatively, by specifying two points on the waveform of injection pressure and a point therebetween, the waveform is corrected in conformity with a circular arcuate line connecting these three points (T4, T7, T8). The waveform of injection pressure thus corrected is set as a target value of feedback control of injection pressure (T8, T9).

More Like This:

JPH0834040	CONTROL OF INJECTION MOLDING MACHINE
JPS62170316	INJECTION MOLDING DEVICE

Inventors:

KAMIGUCHI MASAO (JP)
NEKO NORIAKI (JP)

Application Number:

PCT/JP1992/000022

Publication Date:

July 23, 1992

Filing Date:

January 14, 1992

Export Citation:

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Assignee:

FANUC LTD (JP)

International Classes:

B29C45/50; B29C45/76; B29C45/77; B65B13/02; B65B17/02; B65B27/00; B65D63/10; C09J7/02; C09J121/00; C09J201/00; (IPC1-7): B29C45/76

Foreign References:

JPS61154820A	1986-07-14
JPS61197218A	1986-09-01

Other References: