Apparatus and method for bending bars
AssigneeSchnell S.P.A.
InventorAronne MIGLIORANZA
Life of this patent
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Abstract
The apparatus for bending bars includes a bending unit suitable for receiving on a work surface (α) at least one bar according to a longitudinal direction (A), and a bending head which can be engaged on the bending unit, at a bending axis (B). The bending head includes a bending mandrel and an eccentric pin rotatable on the work surface (α) around the bending axis (B), to bend the bar around the mandrel.
Claims16
An apparatus for bending bars, in particular metal bars, comprising at least one bending unit adapted to receive at least one said bar on a work surface (α) according to a longitudinal direction (A), and a bending head which can be engaged on said bending unit, at a bending axis (B), said bending head comprising a bending mandrel and an eccentric pin, rotatable on said work surface (α) around said bending axis (B), to bend said bar around said mandrel, and a conveying device comprising an articulated arm constrained to a height below said work surface (α) and a gripping member articulated to said articulated arm at an orientation axis, said gripping member being movable between an open configuration for releasing and a closed configuration for holding, characterized in that said bending head comprises a gripping portion configured to be held by said gripping member arranged in said closed configuration and in that said transfer device is movable with a replacement motion between a first position in which said gripping member is arranged in a closed configuration at said bending head mounted on said bending unit, to hold said gripping portion, and a second raised position, in which said bending head held by said gripping member is drawn out from said work surface (α).
A method for bending bars, in particular metal bars, comprising the steps of
- a. arranging a bending unit equipped with a bending head and at least one transfer device equipped with an articulated arm and a gripping member, articulated to said articulated arm;
- b. carrying out a bending cycle of a number of bars on said bending unit and unloading said number of bent bars from said bending unit;
- c. grasping with said gripping member a gripping portion of said bending head;
- d. operating said transfer device in a replacement motion to draw out said bending head from said bending unit and transferring it to a magazine associated with said bending unit;
- e. operating said gripping member to release said bending head in an empty position of said magazine;
- f. moving said transfer device relative to said magazine to reach a position of magazine where a spare bending head is placed;
- g. grasping said respective gripping portion of said spare bending head with said gripping member;
- h. moving said conveying device to take from said magazine said spare bending head, transfer and engage it into said bending unit.
Dependencies are inferred from the claim text.