A machine for cutting decorations for frustoconical bodies, comprising:
- left and right longitudinal supports having opposite inclinations, the left and right longitudinal supports provided with respective inner surfaces, the respective inner surfaces facing each other and diverging towards a lower area;
- clamping parts to which the left and right longitudinal supports are fixed by opposite ends of the left and right longitudinal supports, each of the clamping parts of the left and right longitudinal supports comprising seats for housing the ends of the left and right longitudinal supports in a certain position;
- left and right groups of counter blades fixedly mounted to said inner surfaces of said left and right longitudinal supports, respectively;
- transverse slots defined in the left and right longitudinal supports for step by step advancement of at least one printed strip, the at least one printed strip including alternated arch-shaped decorations and disposable trapezoidal portions;
- independent left and right groups of flat and coplanar cutting blades having respective left and right cutting blades, the left and right counter blades having respective left and right groups of counter blades, wherein the respective left and right cutting blades are laterally attached and overlapped to the respective left and right groups of counter blades, respectively;
- wherein a gap is defined between said left and right cutting blades of the left and right groups of flat and coplanar cutting blades and between said left and right counter blades of the left and right groups of counter blades, said gap having an increasing width towards a lower gravity outlet opening of the disposable trapezoidal portions separated, by cutting, from the at least one printed strip;
- left and right drive shafts housed in longitudinal holes defined in the left and right longitudinal supports, respectively, and capable of movement along the longitudinal holes, wherein the left and right cutting blades of the left and right groups of flat and coplanar cutting blades are fixed to the left and right drive shafts, respectively;
- and
- a drive to which the left and right drive shafts are fixed by one of its ends through a plate for reciprocating movement of the left and right cutting blades relative to the left and right counter blades in a longitudinal direction along the left and right longitudinal supports to cut the at least one printed strip into the alternated arch-shaped decorations and the disposable trapezoidal portions by step-by-step advancement of the at least one printed strip in one of the transverse slots after each reciprocating movement of the left and right cutting blades relative to the left and right counter blades, wherein shapes of the alternated arch-shaped decorations and the disposable trapezoidal portions are defined by inclination angles and a spacing distance of the left and right groups of flat and coplanar cutting blades and left and right groups of counter blades at the certain position of the left and right longitudinal supports fixed by the clamping parts;
- wherein the clamping parts of the opposite ends of the left and right longitudinal supports comprise respective seats for housing each of the opposite ends of the left and right longitudinal supports in a certain position establishing a spacing distance and inclination of the left and right groups of flat and coplanar cutting blades and left and right groups of counter blades in accordance with the dimensions of the disposable trapezoidal portions of the at least one printed strip to be cut, wherein said clamping parts are replaceable for other clamping parts comprising respective seats for housing the opposite ends of the left and right longitudinal supports in different certain positions to adapt the spacing distance and inclination of the left and right groups of flat and coplanar cutting blades and left and right groups of counter blades to the geometry of the said disposable trapezoidal portions to be cut in each case by the reciprocating movement of the left and right cutting blades relative to the left and right counter blades, and
- wherein the plate connecting the drive shafts to the drive is replaceable for another plate in case of replacement of the clamping parts.