Title:
MANUFACTURING MOLD OF EXPANDED LATTICE BODY FOR LEADACID BATTERY
Document Type and Number:
Japanese Patent JP3398513
Kind Code:
B2
Abstract:
PURPOSE: To obtain a manufacturing mold which can improve productivity and quality and can provide an expanded lattice body by setting a crossed axes angle with the edge axis of an appearing material side edge tip surface of a V-shaped edge smaller than a crossed axes angle on the entering material side.
CONSTITUTION: When a lead alloy sheet 4 is sent into from the arrow direction at expanding work time, a notch is formed by a V-shaped edge 1, and it is elongated at the same time, and a rhombic mesh 5 is formed. When a bone 6 constituting this mesh 5 is formed, a bone 7 on the entering material side of an edge is formed according to an entering material side edge tip surface 10 since it is directly connected to the sheet. On the other hand, a bone 8 on the appearing material side easily elongates since it also serves as one side of a bone constituting the already formed rhombic mesh 5. Therefore, since a crossed axes angle to the edge axis of an appearing material side edge tip surface is set smaller than a crossed axes angle to the edge axis of an entering material side edge tip surface, a rupture occurrence rate of an expanded lattice body is reduced, so that it can be stabilized.
Inventors:
Masayoshi Yuki
Kazutoshi Itagawa
Kazutoshi Itagawa
Application Number:
JP7799195A
Publication Date:
April 21, 2003
Filing Date:
April 03, 1995
Export Citation:
Assignee:
Matsushita Electric Industrial Co., Ltd
International Classes:
B21D31/04; H01M4/73; H01M4/74; (IPC1-7): H01M4/74; B21D31/04
Domestic Patent References:
| JP5744428A | ||||
| JP57126076A | ||||
| JP58165251A |
Other References:
【文献】国際公開94/15375(WO,A1)
Attorney, Agent or Firm:
Kazuo Ishii