Metal sheet bending device with rotation inhibiting function

摘要

A metal sheet bending apparatus includes first and second lower bar molds each having a section of a semicircular shape. The first and second lower bar molds are rotatably provided in first and second concave portions of a support, respectively. First and second adjust screws are attached to first and second pull-up rods, respectively at an opposite side of the portions with respect to first and second stoppers. An upper mold is adapted to bend a metal sheet placed on metal contact surfaces of the first and second lower bar molds by pressing the metal sheet above a groove of the support while the first and second lower bar molds rotate against spring force given by first and second push springs such that the metal contact surfaces form a V-shape.