| 摘要 |
Drawing and/or straightening unit for feeding one or more oblong metal products (11) to a machine for working the metal products (11). The drawing and/or straightening unit (10) comprises a first driven roller (12) on which at least one metal product (11) to be fed is positioned longitudinally, and at least a second contrasting roller (13, 15), opposite the first roller (12) with respect to an axis of feed (F) of the metal product (11), to keep the metal product (11) correctly positioned with respect to the first roller (12) during feed. The drawing and/or straightening unit (10) comprises actuators (23, 25, 26) operationally associated with the second roller (13, 15), in order to move, at least in the initial positioning step, the second roller (13, 15) with respect to the first roller (12), in order to vary the distance between the second roller (13, 15) and the first roller (12). The actuators comprise a first linear actuator (23) able to command the initial movement of approach of the second roller (13, 15) toward the first roller (12), and at least a second linear actuator (25, 26) able to command the selective and controlled movement of the second roller (13, 15) substantially continuously during the feed steps, and hence the contrast applied to the metal product (11), according to its actual sizes. |
