Thin sheet forming dies

Details Thin sheet forming dies Thin sheet forming dies

B - Operations, Transporting

21

D

B21D 5/01 (2006.01) B21D 37/12 (2006.01) B29C 53/04 (2006.01)

Patent

CA 2196929

A thin sheet forming die with a forming portion to be a negative angle when the second die is moved in the straight line direction and abutted to the first die to form thin sheets, comprising a cylindrical rotating cam with a groove formed in the axial direction rotatably mounted to the first die, a negative angle forming portion formed in the groove edge portion of the rotating cam, a slide cam with a negative angle forming portion equipped to the second die in such a manner to be opposite to the said rotating cam, and an automatic return device equipped to the first die for rotating and retracting the rotating cam to the condition in which the work is removed from the first die after forming, wherein an excessively bent negative angle forming portion is designed to be processed with one rotating cam equipped with a plurality of cylindrical rotating cam portions in varying diameters.

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