Title:
MOLDING DIE AND MOLDING METHOD
Document Type and Number:
Japanese Patent JP2020082157
Kind Code:
A
Abstract:
To provide a molding die that can obtain high-quality molded product with less shrinkage cavities generated.SOLUTION: The molding die, into which a heated molten material is pressurized and charged in order to obtain a coagulated object having a thin wall part and a thick wall part, comprises a first die, provided at an upstream side of a passage on which the molten material is charged, which forms a first cavity molding the thin wall part of the coagulated object, and a second die that forms a second cavity provided at a downstream side of the first cavity and communicated with the first cavity and molding the thick wall part of the coagulated object. The first die has coarse parts constituted of base materials that externally contact an inner wall partitioning the first cavity to support the wall and hollows formed around the base material. The coarse parts of the first die delay coagulation in the first cavity molding the thin wall part. Therefore, molten materials can be sufficiently supplied to the second cavity molding the thick wall part through the first cavity, so that generation of shrinkage cavities in the thick wall part is suppressed.SELECTED DRAWING: Figure 1B
Inventors:
HIBI KAZUMA
YAOKAWA JUN
IWATA YASUSHI
KAWAHARA HIROSHI
FURUKAWA YUICHI
YAOKAWA JUN
IWATA YASUSHI
KAWAHARA HIROSHI
FURUKAWA YUICHI
Application Number:
JP2018222434A
Publication Date:
June 04, 2020
Filing Date:
November 28, 2018
Export Citation:
Assignee:
TOYOTA CENTRAL RES & DEV
TOYOTA MOTOR CORP
TOYOTA MOTOR CORP
International Classes:
B22D17/22; B22C9/06; B22D17/00; B22D21/04; B29C45/26
Attorney, Agent or Firm:
Morioka Masayuki
Sansui International Patent Office
Sansui International Patent Office