Title:
INJECTION MOLDING METHOD AND INJECTION MOLDING MACHINE USING SAID METHOD, AND INJECTION MOLDING SCREW USED THEREWITH
Document Type and Number:
WIPO Patent Application WO/2019/208663
Kind Code:
A1
Abstract:
[Problem] To forcibly knead both solid and liquid phases at the early stage of a plasticization process and promote melting of a solid bed (SB) in a screw groove.
[Solution] Some of a solid phase part serving as a solid bed (SB) in a screw groove or some of a melt pool (MP) in a preceding screw groove is forcibly introduced into a solid-liquid phase kneading zone via a branch stream formation opening part forming a branch stream. As a result, resin materials of both solid and liquid phases are kneaded at an early stage to promote melting of the solid phase, and the kneaded and melted resin materials are measured. After the measurement operation, a screw is advanced by an advancing/retracting driving means provided with an injection motor and a ball screw mechanism to inject a measured amount of the melted resin materials into the cavity of closed molds via an injection nozzle.
Inventors:
SHIMOKUSUZONO SO (JP)
INOUE AKIRA (JP)
SAWADA YASUTAKE (JP)
INOUE AKIRA (JP)
SAWADA YASUTAKE (JP)
Application Number:
PCT/JP2019/017520
Publication Date:
October 31, 2019
Filing Date:
April 24, 2019
Export Citation:
Assignee:
TOYO MACHINERY & METAL (JP)
International Classes:
B29C45/60; B29C45/50
Foreign References:
| JPH08103926A | 1996-04-23 | |||
| JPS5314761A | 1978-02-09 | |||
| JP2009096072A | 2009-05-07 | |||
| JPS6094922U | 1985-06-28 |
Attorney, Agent or Firm:
OPUS IP LAW FIRM (JP)
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