Method for connecting laminated metal plates and press mold
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Sep 12, 2000
Grant Date -
N/A
app pub date -
Mar 12, 1998
filing date -
Nov 20, 1995
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
In a method for connecting laminated metal plates comprising the steps 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 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 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.
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