COMPRESSION DEVICE FOR SHREDDING PLANT

1 . A compression device for a scrap-shredding plant, comprising at least a rotating roller element able to cooperate with a feed surface for feeding of scrap to the plant in order to grip and compress said scrap between said roller element and said feed surface, characterized in that said roller element comprises a hollow tubular structure able to be dis-assembled, having semi-cylindrical cap elements reciprocally coupled during use with a rotation shaft of said rollers.

2 . The compression device as in claim 1 , characterized in that wherein said semi-cylindrical cap elements are reciprocally coupled, during use, by means of spacer elements, with said rotation shaft.

3 . The compression device as in claim 1 , characterized in that wherein said roller element comprises ribs able to exert a grip on the scrap interposed between the roller element and the feed surface.

4 . The compression device as in claims 3 , characterized in that wherein said ribs protruding radially from a cylindrical surface of said roller element and extend over whole length (L). of the roller element.

5 . The compression device as in claim 1 , comprising a couple of roller elements able to rotate at different speed to exert a stretching action on the scrap.

6 . The compression device as in claims 5 , comprising support means of said roller element, said support means being selectively mobile in order to position the roller elements at a desired distance from said feed surface, and suitable to compression and/or shredding of the scarp to be treated.

7 . Device The compression device as in claims 5 , comprising first sensing means able to sense the grip of a lower roller element, of said couple of roller elements, with said scrap to be treated, for the positioning of the associated roller elements over the scrap in a coordinate and coherent way with the progressive advance of the scrap on said feed surface.

8 . The compression device as in claim 7 , wherein said first sensing means are associated to drive means of said roller elements.

9 . The compression device as in claim 1 , wherein the compression device is associated to second sensing means able to sense, directly or indirectly, the quantity of scrap contained in a shredding unit feeded by the compression device.

10 . The compression device as in claim 1 , wherein said support means comprises oblong tubular elements, pivoted at a first end to a box-like body of the shredding plant and having, at a second end, attachment elements in order to assemble said roller element in a transverse position with respect to a direction of feed of the scrap on said feed surface.

11 . The compression device as in claim 10 , comprising reinforcement elements orthogonally associated with said oblong tubular elements and able to strengthen said oblong tubular elements transversely.

12 . The compression device as in claim 10 , wherein said reinforcement elements comprise plane transverse plates, made outside said oblong tubular element and disposed in predetermined longitudinal positions of said oblong tubular element.

13 . The compression device as in claim 10 , comprising reinforcement elements orthogonally associated with said oblong tubular elements and able to strengthen said oblong tubular elements longitudinally.

14 . The compression device as in claim 12 , wherein said reinforcement elements comprise plane longitudinal plates, made in a single piece or welded to each oblong tubular element.

15 . The compression device as in claim 1 , comprising actuation devices able to move said oblong tubular elements between said first and second positions.

16 . A plant for shredding scrap comprising a device for compressing scrap as in claim 1 .