METHOD OF PREPLASTICATING INJECTION MOLDING

Title:

METHOD OF PREPLASTICATING INJECTION MOLDING

Document Type and Number:

WIPO Patent Application WO/1997/015432

Kind Code:

A1

Abstract:

A method of a preplasticating injection molding, comprising the steps of sending a molten resin plasticized in a plasticizing chamber to an injection chamber through a passage, metering the molten resin, and stopping the passage and precompressing the molten resin before injection is made by a plunger, wherein the stopping of the passage and the precompression function to achieve the precise metering and charging of resin. The deviation of the plunger form the position of completion of metering is determined after the stopping of the passage or the compression, and the position of metering for the next injection is corrected according to the deviation. Charging is effected on the basis of the plunger position detected at the time of precompression.

Inventors:

FUJIKAWA MISAO (JP)
OTOWA HIROTSUGU (JP)

Application Number:

PCT/JP1996/003151

Publication Date:

May 01, 1997

Filing Date:

October 28, 1996

Export Citation:

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Assignee:

SODICK CO LTD (JP)
FUJIKAWA MISAO (JP)
OTOWA HIROTSUGU (JP)

International Classes:

B29C45/50; B29C31/06; B29C45/54; B29C45/76; B29C45/77; (IPC1-7): B29C45/76; B29C45/54

Foreign References:

JPH06170900A	1994-06-21
JPH0397518A	1991-04-23
JPH0397517A	1991-04-23

Other References: