Device and method for forming thin plate-shaped substrate

Patent metadata

Field	Value
Publication number	US-2016129491-A1
Application number	US-201414892215-A
Country	US
Kind code	A1
Filing date	May 26, 2014
Priority date	Jun 25, 2013
Publication date	May 12, 2016
Grant date	—

Abstract

A thin plate-shaped substrate molding device for pressing molding a pre-molded article to a prescribed irregular shape. The thin plate-shaped substrate molding device comprises a first die, a second die, a plurality of tensioning portions and a controller. The first and second dies are movably disposed to be moved towards and away from each other. The second die has protruding portions that protrude towards the first die for forming stretched portions and forming bent portions. The controller controls the first die, the second die and the tensioning portions. The bent portions are tensioned and stretched by the tensioning portions, while the stretched portions of the pre-molded article are still pressed by the first die and the protruding portions of the second die, to impart the shape of the protruding portions to the pre-molded article along the side edges of the protruding portions.

First claim

1 . A thin plate-shaped substrate molding device for pressing molding a pre-molded article obtained by pre-molding a thin plate-shaped substrate to a prescribed irregular shape, the thin plate-shaped substrate molding device comprising:
a first die and a second die movably disposed so as to be capable of moving towards and away from each other; a plurality of protruding portions disposed on the second die to protrude towards the first die, and the plurality of protruding portions being provided with leading edges for forming stretched portions stretched by localized pressing of the pre-molded article, and side edges for inducing deflection in sections that are continuous with the stretched portions, and forming bent portions in spaces bounded on one side by the first die; a plurality of tensioning portions for tensioning and stretching the bent portions; and a controller for controlling operations of the first die, the second die, and the tensioning portions; the bent portions being tensioned and stretched by the tensioning portions while the stretched portions of the pre-molded article are still pressed by the first die and the protruding portions of the second die, to impart the shape of the protruding portions to the pre-molded article along the side edges of the protruding portions, and the prescribed irregular shape of the pre-molded article being an irregular shape such that the bent portions will be formed.

2 . The thin plate-shaped substrate molding device according to claim 1 , wherein
the plurality of protruding portions are disposed adjacent one another on the second die, and the tensioning portions are arranged between the adjacent protruding portions so as to press and move extended portions that extend between adjacent ones of the bent portions, and thereby tension and stretch the respective adjacent ones of the bent portions.

3 . The thin plate-shaped substrate molding device according to claim 2 , wherein
the tensioning portions have a protruding portion for pressing the extended portions of the pre-molded article, at least one projection being formed on the protruding portion.

4 . The thin plate-shaped substrate molding device claim 1 , wherein
the tensioning portions tension and stretch the bent portions in sequential fashion, starting from the flexible portion positioned at a center of the pre-molded article and proceeding towards the bent portions positioned at one of the ends.

5 . A thin plate-shaped substrate molding method for molding a thin plate-shaped substrate, in which a pre-molded article obtained by pre-molding a thin plate-shaped substrate to a prescribed irregular shape is press-molded by a first die and a second die disposed so as to be capable of moving towards and away from each other, the thin plate-shaped substrate molding method comprising:
a deflection forming step for forming stretched portions obtained by causing the pre-molded article to be locally pressed and stretched by the first die and leading edges of protruding portions that are disposed on the second die and that protrude towards the first die, and inducing deflection in sections that are continuous with the stretched portions to form bent portions in spaces formed between the first die and the protruding portions of the second die, and a tensioning step for tensioning and stretching the bent portions while the stretched portions of the pre-molded article are still pressed by the first die and the protruding portions of the second die, and imparting a shape of the protruding portions to the pre-molded article along side edges which are continuous with the leading edges of the protruding portions, the prescribed irregular shape of the pre-molded article being an irregular shape such that the bent portions will be formed in the deflection forming step.

6 . The thin plate-shaped substrate molding method according to claim 5 , wherein
the plurality of protruding portions are disposed adjacent one another on the second die, and the tensioning step includes pressing extended portions that extend between the adjacent bent portions are pressed and moved between adjacent ones of the protruding portions, thereby tensioning and stretching the respective adjacent bent portions.

7 . The thin plate-shaped substrate molding method according to claim 6 , wherein
the tensioning step includes pressing the extended portions of the pre-molded article using protruding portions; and at least one projection being formed on the protruding portions.

8 . The thin plate-shaped substrate molding method claim 5 , wherein
the tensioning step includes tensioning and stretching in sequential fashion the bent portions, starting from the bent portion positioned at a center of the pre-molded article and proceeding towards the bent portions positioned at one of the ends.

9 . The thin plate-shaped substrate molding method according to claim 6 , wherein
the tensioning step includes tensioning and stretching in sequential fashion the bent portions, starting from the bent portion positioned at a center of the pre-molded article and proceeding towards the bent portions positioned at one of the ends.

10 . The thin plate-shaped substrate molding method according to claim 7 , wherein
the tensioning step includes tensioning and stretching in sequential fashion the bent portions, starting from the bent portion positioned at a center of the pre-molded article and proceeding towards the bent portions positioned at one of the ends.

11 . The thin plate-shaped substrate molding device claim 2 , wherein
the tensioning portions tension and stretch the bent portions in sequential fashion, starting from the bent portion positioned at a center of the pre-molded article and proceeding towards the bent portions positioned at one of the ends.

12 . The thin plate-shaped substrate molding device claim 3 , wherein
the tensioning portions tension and stretch the bent portions in sequential fashion, starting from the bent portion positioned at a center of the pre-molded article and proceeding towards the bent portions positioned at one of the ends.

Assignees

• Nissan Motor

Inventors

• Taguchi Naoto
• Yoshitome Masaaki
• Higuchi Manabu

Classifications

• B21D25/02 Primary

  by pulling over a die · CPC title

• H01M8/0202

  Collectors; Separators, e.g. bipolar separators; Interconnectors · CPC title

• H01M8/0206

  Metals or alloys · CPC title

• Y02E60/50

  Fuel cells · CPC title

• B21D13/02 Primary

  by pressing · CPC title