PRESS-MOLDING METHOD AND PRESS-MOLDED ARTICLE MANUFACTURING METHOD

WIPO Patent Application WO/2023/153034

A1

This press-molding method and press-molded article manufacturing method are for molding a press-molded article 1 comprising a top plate section 3 that has a convex outer peripheral edge section 3a where an outer peripheral edge or a part thereof is convexly curved outward, a vertical wall section 5 that is continuous with the top plate section 3 via a punch shoulder R section 23, and a flange section 7 that is continuous with the vertical wall section 5 via a die shoulder R section 25, wherein said methods include a first molding step in which a metal plate is molded into an intermediate molded article 17, and a second molding step in which the intermediate molded article 17 molded in the first molding step is molded into a press-molded article 1 of a target shape, and in the first molding step, the molding is performed so that the radius of curvature of the die shoulder R section 25, which is formed so as to correspond to at least the convex outer peripheral edge section of the top plate section 3 of the intermediate molded article 17, is greater than the radius of curvature of the die shoulder R section 25 of the press-molded article 1 of the target shape.

JPH0612156	[Title of Invention] Self-adjusting pipe clamp combined joint
JP6583221	Press molding method
JP5608537	A manufacturing method of a pipe with a flange

TOBITA SHUNSUKE (JP)

PCT/JP2022/041902

August 17, 2023

November 10, 2022

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JFE STEEL CORP (JP)

B21D22/26; B21D22/20; B21D24/00

WO2017047601A1	2017-03-23
WO2021141104A1	2021-07-15

JP6870674B2	2021-05-12
JP2021178339A	2021-11-18

SAKAI INTERNATIONAL PATENT OFFICE (JP)

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