Automatic bending machine for the manufacture of steel rule cutting dies.

摘要

An automatic bending machine for automatically bending strip blade material, comprising a nozzle with a nozzle gate at the end of the nozzle, the machine arranged to intermittently feed strip blade material through the nozzle until the strip blade material juts out from the nozzle gate. The machine also has a clockwise (CW)-direction bending tool (4) and a counterclockwise (CCW)-direction bending tool (40), the top and bottom of each bending tool having a bending tool support extending substantially perpendicularly relative to the respective bending tool (4,40). Each bending tool support comprises a ring (421) having a concentric hole which is aligned with a concentric hole of one said bending tool support of the other bending tool. A shaft (10210) penetrates the concentric holes of the rings of the CW-direction bending tool (4) and the CCW-direction bending tool (40) and has the nozzle gate. A ring relief groove is provided between one said bending tool and at least one of its rings in order to accommodate one said ring of the other said bending tool so as to prevent tool interference. A protrusion (22) is provided on a belt wheel (2), wherein when the belt wheel (2) with the protrusion (22) is turned sufficiently clockwise or counterclockwise, the protrusion (22) contacts one said bending tool support of the CW-direction bending tool (4) or the CCW-direction bending tool (40), respectively, causing it to be turned in a clockwise direction or a counterclockwise direction to strike the strip blade material to bend it.