Patent ID: 7556213

Claim:
Device for comminuting empty containers selected from the group consisting of beverage bottles and beverage cans made of plastic/PET or tin plate, comprising a housing/frame ( 1 ), having a fill-in opening ( 2 ), as well as an exit opening ( 3 ), and a cutting unit ( 4 ) disposed in the housing ( 1 ), as well as means for drive and control of the cutting unit ( 4 ), whereby the cutting unit ( 4 ) contains at least cutting rollers ( 4 . 1 and 4 . 2 ), disposed at a distance from one another with regard to their axes of rotation, wherein the cutting unit ( 4 ) is a cutting unit ( 4 ) used for shredding paper or paperboard in document shredders, in which each cutting roller ( 4 . 1 and 4 . 2 ) has multiple cutting disks ( 5 ), which are each disposed at an axial distance from one another by means of a circumferential groove (gap E), and the axes of rotation (A 1 and A 2 ) of the cutting rollers ( 4 . 1 and 4 . 2 ) are disposed at an axial distance from one another, in such a manner that adjacent cutting disks ( 5 ) of the two cutting rollers ( 4 . 1 and 4 . 2 ) mesh, whereby a gap, the cutting play ( 16 ), is present between two side flanks ( 5 . 2 ) of adjacent cutting disks ( 5 ), which flanks face one another, in each instance; wherein the cutting mechanism is a particle cut cutting mechanism and wherein the cutting disks ( 5 ) have grooves ( 6 ) worked into their circumference surface ( 5 . 1 ), whose trailing flank ( 6 . 3 ), in the direction of rotation (R, R′), forms a cutting tooth ( 5 . 3 ), together with the circumference surface ( 5 . 1 ), which tooth has an acute angle and points in the direction of rotation, whereby the groove flank ( 6 . 3 ), which begins at the tip, has a linear progression as well as a progression directed counter to the direction of rotation (R, R′), and the subsequent transition region ( 6 . 4 ) to the groove base ( 6 . 2 ) and/or the groove flank ( 6 . 1 ) that lies in the direction of rotation is configured in arc shape.