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1. 发明专利

JP2003230913A METHOD FOR REMOVING STRAIN OF PRESS-FORMED ARTICLE AND PRESS UNIT 审中-公开
公开(公告)号：JP2003230913A
公开(公告)日：2003-08-19
申请号：JP2002030394
申请日：2002-02-07
申请人： ARACO CORP , TOYOTA MOTOR CORP
发明人： YOSHIOKA NAOKI , KUSUNOKI KENICHI , YATSUGAMI YUICHI , WADA MIKIO , TAKAHASHI TAKESHI
IPC分类号： B21D1/06 , B21D13/02 , B21D22/02 , B21D22/20 , B21D22/26 , B21D24/00 , B21D24/02 , B21D25/00
摘要： PROBLEM TO BE SOLVED: To briefly remove the strain of a press-formed article only in a tensioning operation in a state (press-forming condition) that the shape of the press-formed article is maintained. SOLUTION: By shifting the center W1 of the press-formed article W in a state that its peripheral edge W3 is fixed by a die 12 of a press unit and a blank holder insert 28 to the press direction (arrow direction in Fig.) in a state of partially pinching the center W1 by a cope 21 and a drag 11, a surrounding portion W2 surrounding the center W1 of the press-formed article W is relatively tensioned in the departing direction from the center W1 and the press-formed article W is deformed and strain is removed from the press-formed article W by the plastic deformation. COPYRIGHT: (C)2003,JPO

2. 发明专利

JPH11167927A CURRENT COLLECTING ELECTRODE FOR FUEL CELL, MANUFACTURE AND MANUFACTURING EQUIPMENT OF CURRENT COLLECTING ELECTRODE 失效
公开(公告)号：JPH11167927A
公开(公告)日：1999-06-22
申请号：JP33213097
申请日：1997-12-02
申请人： ARACO CORP , TOYOTA MOTOR CORP
发明人： YOSHIOKA NAOKI , KIMURA YOSHIO , TAKAHASHI TAKESHI
IPC分类号： B21D28/10 , H01M8/02 , H01M8/10
摘要： PROBLEM TO BE SOLVED: To provide a current collecting electrode for a fuel cell at a cost lower than that of the conventional current collecting electrode, made of carbon plate. SOLUTION: A current collecting electrode for a fuel cell has many projections 14b on one side surface 14a of a conductive metal plate is arranged so as to come in contact with the outer surfaces of electrodes 12, 13 which come in contact with the side surface of an electrolyte 11 and forms a flow path of supply gas between the outer surfaces of the electrodes 12, 13 and itself, and each projection 14b on the one side surface 14a is formed by half- blanking press work. By adopting a metal material having good working capability as a base material of a current collecting electrode, a material cost and a working cost can be reduced, and a current collecting electrode 14 having many projections 14b on the one side surface 14a facing the electrodes 12, 13 can be provided at a low cost.

3. 发明专利

JP2001259752A THIN METAL PLATE HAVING MANY PROJECTIONS ON SURFACE AND ITS MANUFACTURING METHOD 失效
公开(公告)号：JP2001259752A
公开(公告)日：2001-09-25
申请号：JP2000082460
申请日：2000-03-23
申请人： ARACO CORP , TOYOTA MOTOR CORP
发明人： YOSHIOKA NAOKI , TAKAHASHI TAKESHI , YATSUGAMI YUICHI
IPC分类号： B21D22/02 , B21D22/04 , B21D22/20 , B21D24/04 , B21D26/021 , B21D26/027 , B21D26/031 , B21D35/00 , B21D37/10 , B21D26/02
摘要： PROBLEM TO BE SOLVED: To manufacture a thin metal plate having many projections by compression-formed without causing creak, warp, droop to a shoulder part and a base part of the projecting part. SOLUTION: In the thin metal plate having many projections 12 on the surface, a forming material A is held between a female die 22 having many recessedious 22b on the surface and a male die 21 having many projections on to the bottom part of a recessed part 21 where the female die 22 is inserted, in the state that a liquid pressure is actuated between the forming material A and the recessed part 21b of the male die 21, the forming material A is formed stepwise by conducting compressed-forming.

4. 发明专利

JP2005007446A Hydraulic forming machine, hydraulic forming method, and metal separator for fuel cell formed by using the method 有权
标题翻译：液压成型机，液压成型方法和金属分离器，用于使用该方法形成的燃料电池
公开(公告)号：JP2005007446A
公开(公告)日：2005-01-13
申请号：JP2003175665
申请日：2003-06-20
申请人： Araco Corp , アラコ株式会社
发明人： YOSHIOKA NAOKI , TAKAMURA TOMOYUKI
IPC分类号： B21D22/20 , B21D13/02 , B21D24/04 , B21D53/00 , H01M8/02
CPC分类号： Y02E60/50
摘要： PROBLEM TO BE SOLVED: To provide a hydraulic forming machine and a hydraulic forming method capable of performing preferable hydraulic forming with a simplified die structure. SOLUTION: A working fluid A is filled in a recessed part 21a formed in a base 21 by using the hydraulic forming device 20, and a metallic plate body 11 is placed on a supporting part 21b with a lower die 22 stored therein. Next, a blank holder 24 is lowered and a peripheral edge portion of the placed metallic plate body 11 is fixed thereby together with the supporting part 21b. An upper die 23 is lowered, and the metallic plate body 11 is held between itself and the lower die 22, and pressed down to compress the working fluid A and increase the hydraulic pressure. A stripe-like projecting part 12 is transferred to the metallic plate body 11 with a forming part 23a and the high-pressure working fluid A flowing through a through-hole 22a. Then, the hydraulic pressure is maintained for a predetermined time. Then, the hydraulic pressure of the working fluid A is released to take out a thin-walled metallic plate 10. The thin-walled metal plate 10 is hydraulically formed through the above-described forming steps. COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：解决的问题：提供能够以简化的模具结构进行优选的液压成形的液压成形机和液压成形方法。解决方案：通过使用液压成形装置20将工作流体A填充在形成在基座21中的凹部21a中，金属板体11放置在支撑部21b上，下模22存储在支撑部21b中。接下来，坯料保持器24下降，并且所放置的金属板体11的周边部分被固定，从而与支撑部分21b一起固定。上模23下降，金属板本体11保持在其自身与下模22之间，并被压下以压缩工作流体A并增加液压。条状突起部分12通过形成部分23a转移到金属板体11，并且高压工作流体A流过通孔22a。然后，将液压保持一定时间。然后，释放工作流体A的液压以取出薄壁金属板10.薄壁金属板10通过上述成形步骤液压地形成。版权所有（C）2005，JPO＆NCIPI

5. 发明专利

JP2004195548A Hydraulic forming method, hydraulic forming machine and metal separator for fuel cell formed by hydraulic forming process 审中-公开
公开(公告)号：JP2004195548A
公开(公告)日：2004-07-15
申请号：JP2003178935
申请日：2003-06-24
申请人： Araco Corp , アラコ株式会社
发明人： KUSUNOKI KENICHI , SHIOMI MASANAO , YOSHIOKA NAOKI , TAKAMURA TOMOYUKI
IPC分类号： B21D22/20 , B21D53/00 , H01M8/02
CPC分类号： B21D26/025 , B21D15/10 , B21D22/205 , B21D26/027 , B21D26/029 , H01M8/0254 , Y02P70/56
摘要： PROBLEM TO BE SOLVED: To provide a hydraulic forming method that makes suitable hydraulic forming possible with a simplified mold structure and to provide a machine therefor. SOLUTION: In a hydraulic forming machine 20, a metal plate body 11 is placed on a support section 21b in a state that a hollow section 21a formed on a lower die 21 is filled with hydraulic fluid A. Subsequently, a blank holder 23 is lowered to clamp the circumferential edge section of the placed metal plate body 11 with the support section 21b. Then, the upper die 22 is lowered relative to the lower die 21 to press and deform the central section of the metal plate body 11 and to compress the hydraulic liquid A to increase the fluid pressure. A rib-like projected section 12 is transferred onto the metal plate body 11 by the increased fluid pressure of the hydraulic fluid A and a forming section 22a. The fluid pressure of the hydraulic liquid A is kept for a predetermined period, and then the increased fluid pressure of the hydraulic liquid A is released. Thus, a metal separator 10 is hydraulically formed through the foregoing processes. COPYRIGHT: (C)2004,JPO&NCIPI

6. 发明专利

JP2000251902A GAS SEPARATOR FOR FUEL CELL, ITS MANUFACTURE AND FUEL CELL 失效
公开(公告)号：JP2000251902A
公开(公告)日：2000-09-14
申请号：JP4844299
申请日：1999-02-25
申请人： TOYOTA MOTOR CORP
发明人： TAKAHASHI TAKESHI , YOSHIOKA NAOKI
IPC分类号： H01M8/02 , H01M8/10
摘要： PROBLEM TO BE SOLVED: To suppress warping of a gas separator for a fuel cell. SOLUTION: A separator 30 comprises a collector 16 and an outer rim 17, and two recessed parts 50, 51 are formed on the collector 16. Plural projecting parts are provided in the recessed parts 50, 51. When a fuel cell is assembled by using the separator 30, the recessed parts 50, 51 and projecting parts provided in them form a gas passage between these parts and adjacent members. The collector 16 is almost quadrilateral, however its four corners are formed into a smooth curved shape with no angular part.

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