| 摘要 |
<p>The two turrets (6, 7), carrying a plurality of punch-die pairs (8, 9), are rotatable to carry a punch-die pair (8, 9) to a work station (3) and, simultaneously, another punch-die pair (8, 9) to a changeover station (63). A magazine (31) of punch-die pairs (8, 9) comprises at least one pair of discs (33, 34) joined to each other and carrying a series of punch-die pairs (8, 9). The discs (33, 34) are selectively rotated to take a predetermined new punch-die pair (8, 9) to a collection station (65). At least one exchange arm (48, 49) is rotated by a corresponding servomotor (59) and carries at least one gripper element (53, 54), axially and radially moveable with respect to the arm (48, 49), independently of each other. <IMAGE></p> |
