Device for bending a thread-like material

Abstract

Device for bending a thread-like material, for instance a tube, with different angles and orientations, in particular for exhaust pipes and manifolds for cars, provided with at least two pairs of clamping jaws hooked to a rotary device.

Claims

1. A device for bending a tube, along the longitudinal axis (X) of said tube, comprising: a bend forming member centered for rotation about a bending axis (Z) and perpendicular to a bending plane, having a groove on its periphery terminating at an indentation cut in said bend forming member; and at least a first pair of clamping jaws and a second pair of clamping jaws hooked to a rotary device having an axis of rotation parallel to the bending axis (Z) and secured to a bending arm; wherein the first pair of clamping jaws and the second pair of clamping jaws lay in a plane parallel to the bending plane and orthogonal to the bending axis (Z).

2. A device for bending a tube according to claim 1, further comprising relative displacement means of the first pair of clamping jaws or of the second pair of clamping jaws along an axis parallel to the bending axis (Z) for positioning the first pair of clamping jaws or the second pair of clamping jaws in the bending plane for bending a profiled section of the tube.

3. A device for bending a tube according to claim 1, further comprising: relative displacement means of the first pair of clamping jaws or of the second pair of clamping jaws along an axis parallel to the bending axis (Z) for positioning the first pair of clamping jaws or the second pair of clamping jaws in the bending plane for bending a profiled section of the tube, wherein both the first pair of clamping jaws and the second pair of clamping jaws are suitable both for bending the profiled section and for clamping the bent profiled section for its cutting by means of a cutting device.

4. A device for bending a tube, along the longitudinal axis (X) of said tube, comprising: a bend forming member centered for rotation about a bending axis (Z) and perpendicular to a bending plane, having a groove on its periphery terminating at an indentation cut in said bend forming member; and at least a first pair of clamping jaws and a second pair of clamping jaws hooked to a rotary device having an axis of rotation parallel to the bending axis (Z) and secured to a bending arm; wherein the first pair of clamping jaws and the second pair of clamping jaws lay in a plane parallel to the bending plane and orthogonal to the bending axis (Z), and further comprising a cutting device for cutting the profiled section positioned in the bending plane.

5. A device for bending a tube according to claim 4, wherein both the first pair of clamping jaws and the second pair of clamping jaws are suitable both for bending the profiled section and for clamping the bent profiled section for its cutting by means of the cutting device.

Description

DESCRIPTION OF THE FIGURES

(1) FIG. 1 shows a device according to the present invention in a tridimensional form.

(2) FIG. 2 shows a first pair of clamping jaws and a second pair of clamping jaws, hooked to a rotary device, in a tridimensional form.

(3) FIG. 3 shows the relative displacement means of the first pair of clamping jaws or of the second pair of clamping jaws and the cutting device in a tridimensional form.

(4) FIG. 1 shows the bending device for a thread-like material (1), for instance a tube, along the longitudinal axis (X) of said thread-like material (1). The device comprises a bend forming member (2) centered along the bending axis (Z) and perpendicular to the bending plane (), not graphically shown, having a groove (3) on its periphery terminating at an indentation (4) cut in said bend forming member (2).

(5) FIG. 2 shows a first pair of clamping jaws (5.sup.1, 5.sup.2) and a second pair of clamping jaws (6.sup.1, 6.sup.2) hooked to a rotary device (7) having an axis of rotation parallel to the axis Z and secured to the bending arm (8). The first pair of clamping jaws (5.sup.1, 5.sup.2) and the second pair of clamping jaws (6.sup.1, 6.sup.2) basically lay in a plane parallel to the bending plane (), not graphically shown, orthogonal to the bending axis (Z).

(6) FIG. 3 shows the relative displacement means (9) of the first pair of clamping jaws (5.sup.1, 5.sup.2) or of the second pair clamping jaws (6.sup.1, 6.sup.2), not graphically shown, along an axis parallel to the bending axis (Z) to position the first pair of clamping jaws (5.sup.1, 5.sup.2) or the second pair of clamping jaws (6.sup.1, 6.sup.2) in the bending plane () for bending the thread-like material (1) or for cutting said thread-like material at the end of the working cycle by means of a cutting device (10), not graphically shown, positioned in the bending plane (), not graphically shown. Said clamping jaws are shaped in a way suitable both for bending the thread-like material (1) and for clamping it after being bent for cutting.