Method for folding over plate

摘要

A method of the present invention for folding over a plate (90) includes the steps of: providing a first mold assembly to dent a notch (94) at a place of the plate to be bent and simultaneously form a curved portion (98) at an end of the plate which has a rounded comer (96) with a 1.0 millimeter radius; providing a second mold assembly to bend the plate 90 degrees at the notch; and providing a third mold assembly to finally fold over the plate with a rammer (60'') acting on the curved portion and thereupon flattening the curved portion.