公开(公告)号：US20200206987A1

公开(公告)日：2020-07-02

申请号：US16697449

申请日：2019-11-27

Applicant: MAZDA MOTOR CORPORATION

Inventor： Takeshi MATSUDA ,  Masaru TOBO ,  Yuri TAKAHASHI ,  Kenji NAKAMURA ,  Yoshihide HIRAO ,  Chie OKAWA ,  Seiji INOUE ,  Naoyuki IRIE

IPC: B29C43/36 ,  B29C43/52 ,  B21D22/02 ,  B21D37/16

Abstract: A hot-pressing device includes at least one mold having a molding surface; and at least one mold holder, wherein the hot-pressing device further comprises a refrigerant supply groove provided so as to horizontally extend to at least a mold side or a mold holder side in a contact surface between the at least one mold and the at least one mold holder; and at least one refrigerant supply path opened in corresponding at least one opening disposed on the molding surface, the refrigerant supply path communicating with the refrigerant supply groove and being provided in the inside of the at least one mold so as to extend vertically.

公开(公告)号：US20200238362A1

公开(公告)日：2020-07-30

申请号：US16741422

申请日：2020-01-13

Applicant: MAZDA MOTOR CORPORATION

Inventor： Yuri TAKAHASHI ,  Takeshi MATSUDA ,  Kenji NAKAMURA ,  Chie OKAWA ,  Ichirou INO ,  Naoyuki IRIE

IPC: B21D37/16 ,  B21D22/02

Abstract: A lower mold includes: refrigerant ejection ports in its press-molding surface; and three or more independent refrigerant guide grooves extending in the press-molding surface from the refrigerant ejection ports to guide the refrigerant ejected from the refrigerant ejection port to an outer portion of the press-molding surface with the refrigerant being in contact with a workpiece. Each of the refrigerant guide grooves neither branches halfway nor merges with the others of the refrigerant guide grooves to extend from the refrigerant ejection ports to the outer portion of the press-molding surface.

公开(公告)号：US20200238363A1

公开(公告)日：2020-07-30

申请号：US16741497

申请日：2020-01-13

Applicant: MAZDA MOTOR CORPORATION

Inventor： Yuri TAKAHASHI ,  Takeshi MATSUDA ,  Kenji NAKAMURA ,  Chie OKAWA ,  Ichirou INO ,  Naoyuki IRIE

IPC: B21D37/16 ,  B21D22/02

Abstract: A lower mold includes: refrigerant ejection ports in its press-molding surface; refrigerant guide grooves in the press-molding surface to guide a refrigerant ejected from the refrigerant ejection ports to an outer portion of the press-molding surface with the refrigerant being in contact with a workpiece; a single connecting groove connected to the refrigerant guide grooves and formed at the outer portion of the press-molding surface into which the refrigerant flows through the refrigerant guide grooves; and discharge ports in the connecting groove. Each of the refrigerant discharge ports is formed at a part of the connecting groove apart from the connecting points between the connecting groove and the refrigerant guide grooves.