| 摘要 |
<P>PROBLEM TO BE SOLVED: To prevent an electrode active material from being exfoliated or detached. <P>SOLUTION: The electrode plate punching device comprises a raw plate supporting part capable of supporting a raw plate of an electrode plate, a punching blade 36 arranged with its blade tip directed to the raw plate supporting part, and a drive system capable of bringing the blade tip into contact with the raw plate supported by the raw plate supporting part. The punching blade 36 has a first extending part 361 extending in a first direction, a second extending part 363 extending in a second direction crossing with the first direction, and a corner part 367 connecting the first extending part 361 and the second extending part 363. A position of the blade tip of the punching blade contacting the raw plate is sequentially varied from the first extending part 361 via the corner part 367 to the second extending part 363 as the time lapses. <P>COPYRIGHT: (C)2012,JPO&INPIT |
