Die lifting system for a turret punch press

摘要

A single die raising device is arranged on a turret for raising a die used for forming so that such die-raising device does not become an obstruction when the work is delivered. Apparatus is described in which each of a plurality of form dies (5) arranged on a lower turret (2) can be raised. A die-raising device (16) that raises the die (5) from below the lower turret (2) is arranged so as to be utilized in one place, for example, in the punch position (P), of the rotation path (L) of the die (5) by rotation of the lower turret (2). A projecting part (29a) that projects lower than the lower surface of the lower turret (2) is arranged on each die (5). The die raising device (16) comprises a retracting member (17) which is able to retract horizontally and has a horizontal surface (17b) and a slanting surface (17a) which can lift up the projecting part (29a) of the die (5), and an actuator (18).