METHOD AND APPARATUS FOR NUMERICALLY CONTROLLING TWO AXES SIMULTANEOUSLY IN AN INJECTION MOLDING MACHINE

Title:

METHOD AND APPARATUS FOR NUMERICALLY CONTROLLING TWO AXES SIMULTANEOUSLY IN AN INJECTION MOLDING MACHINE

Document Type and Number:

WIPO Patent Application WO/1987/007867

Kind Code:

A1

Abstract:

A numerical control method which shortens the cycle time of injection molding by opening the mold or by effecting ejection during metering, and an apparatus therefor. When the cooling period has passed or the opening of the mold is completed (S101) during metering, data for specifying the clamp axle or the eject axle is sent, the amount of moving of the axle is sent, and the moving speed and the moving direction, as well as a step feed instruction are sent (S104) from a programmable machine controller which sequentially controls the injection molding machine to the numerical controller which controls servo motors of each of the axles of the injection molding machine via a common RAM, pulses are distributed for the clamp axle or the eject axle based upon these data and pulses are distributed for the screw shaft alternatingly (S105, S100) by the numerical controller that works in response to the step feed instruction, the screw shaft and the clamp axle or the eject axle are driven simultaneously, and the mold is opened or ejection is effected during metering.

Inventors:

KAMIGUCHI MASAO (JP)
UMEMOTO HIROSHI (JP)

Application Number:

PCT/JP1987/000412

Publication Date:

December 30, 1987

Filing Date:

June 23, 1987

Export Citation:

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Assignee:

FANUC LTD (JP)

International Classes:

B29C45/50; B29C45/67; B29C45/70; B29C45/76; G05B19/18; G05B19/404; G05B19/41; G05B19/414; (IPC1-7): B29C45/76

Foreign References:

JPH06119328A

1994-04-28

Other References: