| 摘要 |
A detection roll (10) for detecting the tension in a plurality of transversal portions (91) of a metal ribbon (90), which is subjected to a longitudinal tension and which is at least partially wrappable on a plurality of rolls in a tension-stretching system (70). The detection roll (10) comprises an inner cylindrical metal body (20) having a symmetry axis (12), a metal mantle (30), which covers the inner metal body (20), a series of force sensors (40) positioned between the inner metal body (20) and the metal mantle comprising a series of annular metal sectors (32) coaxially with the symmetry axis (12) and transversally and mutually constrained in order to rotate together, the inner metal body (20) comprising at least 3 mutually parallel transversal grooves (24), and also the detection roll (10) is fixed to a fixed metal structure (13), and it comprises a second plurality of rotary supports (50) inserted into at least 3 transversal grooves (24) together with said plurality of sensors (40) and positioned between the inner metal body (20) and the metal mantle (30), in order to support the metal mantle (30) and to permit a rotation substantially around the symmetry axis (12) of the metal mantle (30), with respect to the inner fixed metal body (20). |
