Title:
METHOD FOR CONNECTING LAMINATED METAL PLATES AND PRESS MOLD
Document Type and Number:
WIPO Patent Application WO/1997/018911
Kind Code:
A1
Abstract:
In a method for connecting laminated metal plates comprising the step of forming a plurality of cutting lines independent from each other in a laminated metal plate, and forming a projecting portion by making a metal plate portion between the cutting line protrude in a laminating direction by a step that is higher than the thickness of the laminated plate, the following solutions are adopted with a view to preventing securely the dislocation of the metal plates in the laminating direction and also preventing securely the deviation of the metal plate in every direction in the laminated plate surface by the two cutting lines. After forming on the laminated metal plate a projecting portion including the central portion thereof through engagement of male and female molds, the laminated metal plate is pressurized between a pressing convex portion and an engagement surface so as to pressingly expand an end to be cut in a gap between the male and female molds, whereby this end to be cut is caused to overlap an end to be cut of the central portion of the projecting portion in the laminating direction. In addition, the cutting lines are formed so as to radially extend from a central point of the central portion of the projecting portion.
Inventors:
UETA KOSAKU (JP)
Application Number:
PCT/JP1996/003401
Publication Date:
May 29, 1997
Filing Date:
November 20, 1996
Export Citation:
Assignee:
NIHON METAL GASKET (JP)
UETA KOSAKU (JP)
UETA KOSAKU (JP)
International Classes:
B21D39/03; F16B4/00; F16J15/08; (IPC1-7): B21D39/03
Foreign References:
| JPS6272441A | 1987-04-03 | |||
| JPS58188522A | 1983-11-04 | |||
| JPS6277130A | 1987-04-09 | |||
| JPS6215123A | 1987-01-23 | |||
| JPS5659539A | 1981-05-23 |
Other References:
See also references of EP 0879658A4
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