Plant for producing and packaging of paper rolls

Abstract

Plant for producing and packaging paper rolls obtained from the cutting of logs of paper material, including formation manners for the production of logs of paper material including winding of a predetermined amount of paper material, cutting elements for transversal cutting, packaging elements of the rolls for producing packages including a predetermined number of rolls and bundling or cartoning elements for bundling or cartoning the packages, where the elements for the production of the logs include a rewinder fed with the web of paper material wrapped to form the logs. The cutting elements, the packaging elements, and the bundling or cartoning elements are grouped into two modules on two superimposed floors of the plant downstream of the rewinder.

1 .- 16 . (canceled) 
     
     
         17 . Plant for producing and packaging paper rolls obtained from the cutting of logs of paper material, comprising: formation means for the production of logs of paper material comprising winding of a predetermined amount of paper material, cutting means for transversal cutting, packaging means of said rolls for producing packages comprising a predetermined number of rolls and bundling or cartoning means for bundling or cartoning said packages, wherein the means for the production of the logs comprise a rewinder fed with the web of paper material wrapped to form the logs, wherein said cutting means, said packaging means, and said bundling or cartoning means are grouped into two modules on two superimposed floors of the plant downstream of the rewinder. 
     
     
         18 . Plant according to  claim 17 , wherein between the rewinder and the modules is interposed an accumulator in which the logs formed by the rewinder are accumulated. 
     
     
         19 . Plant according to  claim 17 , wherein between the rewinder and the modules are interposed with an accumulator in which the logs formed by the rewinder are accumulated and a trimmer located downstream or upstream of the accumulator, in which the logs are trimmed at their respective ends. 
     
     
         20 . Plant according to  claim 17 , wherein the lower floor of said two superimposed floors corresponds coincides with a floor on which the rewinder, the accumulator and the trimmer are placed. 
     
     
         21 . Plant according to  claim 17 , wherein the cutting and the packaging means of each module are integrated forming a single integrated operating unit. 
     
     
         22 . Plant according to  claim 21 , wherein:
 said integrated operating unit comprises a cutting-off machine with a predetermined number of channels in which the logs are moved along a predetermined advancement direction and a cutting unit that cuts the logs in a transverse direction with respect to said direction producing rolls with a predetermined cutting rate,   the rolls produced by the cutting machine come out of the latter along exit lines whose number is equal to the number of said channels and that are oriented each parallel to said direction,   each lot comprises a predetermined number of rolls placed one behind the other and aligned along the advancement direction of the logs from which the rolls are obtained, and   downstream of the cutting-off machine, the following are arranged:   a first unit adapted to arrange the individual rolls spaced apart from each other by a predetermined amount along the respective exit lines, said first unit being provided with a surface on which the rolls are positioned one at a time when they exit from the cutting machine) and that moves them along the direction distancing each roll from the one following it in the respective exit line of the cutting-off machine;   a second unit, cooperating with the first unit, adapted to form the lots by grouping a predetermined number of rolls previously spaced by the first unit in order to produce lots of rolls each comprising a predetermined number of rolls placed one behind the other, said second unit, being provided with blades connected with respective independent actuators that move them along an annular path that has always a section that is parallel to a transit surface on which the rolls are free to pass, such that each blade is adapted to push from the back the last roll of each group to be formed and each formed group as the individual groups are formed;   a third unit, located downstream of the second unit in relation to said direction, adapted to convey the groups towards a packaging machine provided downstream and adapted to receive the groups formed by the second unit.   
     
     
         23 . Plant according to  claim 22  characterized in that on each exit line there is never an accumulation of rolls in a number greater than a number of rolls making up a corresponding group. 
     
     
         24 . Plant according to  claim 22 , wherein the movement of the logs in the respective channels of the cutting machine is an intermittent movement and, “Tt” is the time that elapses between two subsequent cuts normally carried out by the cutting unit of the cutting-off machine, and “Ts” is the time required to stop the movement of the logs, wherein: Ts<Tt. 
     
     
         25 . Plant according to  claim 22 , wherein said first unit comprises a plurality of conveyor belts mounted downstream of the cutting machine and each conveyor belt has always a section in correspondence of respective rolls exit line of the cutting machine. 
     
     
         26 . Plant according to  claim 22 , wherein said second unit comprises a transit surface on which the rolls coming from the first unit are subject to slowdown. 
     
     
         27 . Plant according to  claim 25 , wherein said slowing surface is downstream of said conveyor belts. 
     
     
         28 . Plant according to  claim 22 , wherein said second unit comprises a plurality of blades moved along annular trajectories above a path followed by the rolls during the formation of the groups. 
     
     
         29 . Plant according to  claim 26 , wherein said blades are arranged above said conveyor belts and above the slowdown surface. 
     
     
         30 . Plant according to  claim 29 , wherein said trajectories are triangular trajectories. 
     
     
         31 . Plant according to  claim 29 , wherein the blades are driven by independent actuators above each conveyor belt and are operable by said independent actuators with differentiated speeds above the conveyor belts and the slowdown surface. 
     
     
         32 . Plant according to according to  claim 22  wherein a conveyor belt is provided between the second unit and the conveyor.