Method to carry out bends and relative device
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United States of America Patent
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-
Dec 27, 1994
Grant Date -
N/A
app pub date -
Sep 14, 1993
filing date -
Sep 15, 1992
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Method to carry out bends of a bundle (13) of bars having a diameter up to 32 mm. or more, the bars (13) being superimposed one on another in a plane substantially normal to the work platform, the bending machine (10) comprising; a bending unit (14) including an abutment roll (17) and a bending pin (16), retaining and clamping units (18) positioned as counterparts to each other in relation to the plane of positioning of the centerline of the bundle (13) of bars, the retaining and clamping units (18) being able to move vertically on inclined lateral guides (26), and a unit (11) including a gripper (12) for the controlled lengthwise displacement of the bundle (13) of bars, the retaining and clamping mechanism (18) being partly downwardly retracted during the steps of displacement of the bundle (13) of bars so as to provide a partial opening which enables the bundle (13) of bars to slide and be guided, the gripper (12) of the unit ( 11) performing the controlled lengthwise displacement of the bars being opened partly in at least one step of the bending cycle so as to keep the bundle (13) of bars superimposed one on another in a substantially vertical position.
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