Controller of an injection molding machine

Details Controller of an injection molding machine Controller of an injection molding machine

1991-07-30

1993-02-16

Heitbrink, Tim

Plastic article or earthenware shaping or treating: apparatus

Means feeding fluent stock from plural sources to common...

264 407, 425145, 425149, B29C 4577

Patent

active

051869543

ABSTRACT:
A controller of an injection molding apparatus has a plurality of injection apparatuses from which different molding materials are injected into a cavity of a mold to fill the cavity so that molding is performed. The controller includes a first control unit for controlling operation of a specific injection apparatus on the basis of a previously set target value, for example, in the feedback control manner, a physical amount detection unit for detecting a physical amount (screw velocity, screw position, injection pressure, temperature or the like) concerning the operation of the specific injection apparatus, and a second control unit for obtaining a linkage target value for other injection apparatus from the detected physical amount (detection value) to control operation of the other injection apparatus on the basis of the linkage target value, for example, in the feedback control manner. The second control unit includes an operation function unit for calculating the linkage target value of the other injection apparatus from the detection value. Thus, the other injection apparatus is controlled in interlocked relationship with the operation state of the specific injection apparatus and the operation timings between the specific and other injection apparatuses is synchronized.

REFERENCES:
patent: 4208176 (1980-06-01), Salerno
patent: 4325896 (1982-04-01), Rodgers, Jr.
patent: 4507255 (1985-03-01), Shizawa
patent: 4855095 (1989-08-01), Sato

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