Seikei-Kakou
Online ISSN : 1883-7417
Print ISSN : 0915-4027
ISSN-L : 0915-4027
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Volume 25, Issue 5
Displaying 1-33 of 33 articles from this issue
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Index
Preface
Report of Seikei-Kakou Autumnal Meeting 2012
Session Reports
Technical Notes -Keynote Lectures in Seikei-Kakou Autumnal Meeting 2012
Technical Notes -Decoration Technology
Technical Report
Report of Universities and Institusions in Japan : 196
Report from Overseas
Report of International Meeting
Topic on Products and Technologies
Original Paper
  • Experimental Analysis on Relationship between Flash Generation and Mold Deformation in Injection Mold（Part I）—Application of Strain Sensor to Mold Deformation Measurement—
    Yasuhiko Murata, Hiroyuki Hashimoto, Yasuhiro Hara, Takahiro Shimizu, ...
    2013 Volume 25 Issue 5 Pages 234-240
    Published: 2013
    Released on J-STAGE: October 07, 2014
    DOIhttps://doi.org/10.4325/seikeikakou.25.234
    JOURNAL FREE ACCESS
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    Flash, a molding defect in injection molding, is a serious problem as it reduces production efficiency and damages the mold. This study focused on flash generating at the divided face between the slide cores in a slide core type mold for cylindrical molded products. Strain sensors were attached to several parts of the mold, and the Relationship between flash generation and mold deformation was investigated, and the following results were obtained.
    First, the deformation of the slide core type mold was clarified during the injection molding process. With this mold structure, the slide cores are pushed by high melt pressure towards the mold base at the stationary mold side. This causes the mold base to deform, resulting in the formation of a gap at the divided face between the slide cores, and the generation of flash. It was also confirmed that flash starts to generate under the holding pressure condition at which strain of the mold starts to increase considerably.
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Errata
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