Rereeling machine for rereeling and forming a roll of paper

Abstract

An improved rereeling machine ( 10 ) for rereeling and forming a roll of paper comprising three rollers ( 16, 17, 18 ) with axes parallel to one another and perpendicular to the direction of movement of the paper ( 11 ), wherein two upper and lower winding rollers ( 16, 17 ) collaborate with a third roller ( 18 ), connected by a pair of arms ( 22 ) that are able to oscillate, suitable for keeping a certain pressure on a roll, or log, to form a finished roll ( 19 ), which comes out from said machine ( 10 ) through an outlet port ( 30 ) defined between said lower winding rollers ( 17 ) and said third roller ( 18 ), through winding of said paper ( 11 ), which passes onto said upper winding roller ( 16 ), about a core ( 12 ), said machine ( 10 ) also comprising a conveyor with thrusters ( 15 ) upstream of said three rollers ( 16, 17, 18 ) for the introduction of said cores ( 12 ) one after the other into a channel ( 24 ) formed below said upper roller ( 16 ), a rotary thruster ( 35 ) suitable for making said cores ( 12 ) proceed in said channel ( 24 ), a glue dispensing group ( 29 ) upstream of said channel ( 24 ), and a stop element ( 120 ) for at least partially stopping the paper ( 11 ), defined in an area inside said channel ( 24 ), which collaborates with said upper roller ( 16 ), on which it acts rotating about a pin ( 128 ) thereof, wherein said upper roller ( 16 ) is of the suction type.

1 . Improved rereeling machine ( 10 ) for rereeling and forming a roll of paper comprising three rollers ( 16 ,  17 ,  18 ) with axes parallel to one another and perpendicular to the direction of movement of the paper ( 11 ), wherein two upper and lower winding rollers ( 16 ,  17 ) collaborate with a third roller ( 18 ), connected by a pair of arms ( 22 ) that are able to oscillate, suitable for keeping a certain pressure on a roll, or log, to form a finished roll ( 19 ), which comes out from said machine ( 10 ) through an outlet port ( 30 ) defined between said lower winding roller ( 17 ) and said third roller ( 18 ), through winding of said paper ( 11 ), which passes onto said upper winding roller ( 16 ), about a core ( 12 ), said machine ( 10 ) also comprising a conveyor with thrusters ( 15 ) upstream of said three rollers ( 16 ,  17 ,  18 ) for the introduction of said cores ( 12 ) one after the other into a channel ( 24 ) formed below said upper roller ( 16 ), a rotary thruster ( 35 ) suitable for making said cores ( 12 ) proceed in said channel ( 24 ), a glue dispensing group ( 29 ) upstream of said channel ( 24 ), and a stop element ( 120 ) for at least partially stopping the paper ( 11 ), defined in an area inside said channel ( 24 ), which collaborates with said upper roller ( 16 ), on which it acts rotating about a pin ( 128 ) thereof, wherein said upper roller ( 16 ) is of the suction type. 
   
   
       2 . Set up according to  claim 1 , characterised in that said upper suction roller ( 16 ) comprises a plurality of longitudinal channels ( 100 ) arranged according to a circular crown near to the cylindrical surface portion of said roller ( 16 ), each channel ( 100 ) being placed in communication with the outside through a plurality of holes ( 101 ) on the surface of the roller ( 16 ). 
   
   
       3 . Set up according to  claim 2 , characterised in that said suction roller ( 16 ) comprises a pair of suction pads ( 102 ) in the form of a circular sector arranged aligned with said roller ( 16 ), fixed, facing opposite heads, said pads ( 102 ) being suitable for causing the suction through the channels ( 100 ) located between them. 
   
   
       4 . Set up according to  claim 1 , characterised in that said glue dispensing group ( 29 ) comprises a rod element ( 200 ) equipped with a pointed upper end ( 203 ) able to move cyclically, thanks to a mechanism ( 201 ), between a position in which said pointed upper end ( 203 ) is inside said glue dispensing group ( 29 ) and in which it comes into contact with the glue, and a second position in which said pointed upper end ( 203 ) is outside of said glue dispensing group ( 29 ) and in which it comes into contact with a cylindrical generatrix ( 300 ) of the outer surface of said core ( 12 ) moving on said conveyor ( 13 ). 
   
   
       5 . Set up according to  claim 4 , characterised in that said pointed upper end ( 203 ) in said second position extends over said conveyor ( 13 ). 
   
   
       6 . Set up according to  claim 1 , characterised in that said stop element ( 120 ) for at least partially stopping the paper ( 11 ) consists of an arm ( 132 ) rotating around a pin ( 128 ), the position of which is adjustable. 
   
   
       7 . Set up according to  claim 1 , characterised in that said stop element ( 120 ) for at least partially stopping the paper ( 11 ) foresees friction material ( 133 ) at a free end thereof. 
   
   
       8 . Set up according to  claim 1 , characterised in that said stop element ( 120 ) for at least partially stopping the paper ( 11 ) acts upon a moving element. 
   
   
       9 . Set up according to  claim 1 , characterised in that said channel ( 24 ) is defined by curved elements ( 25 ) arranged below said upper roller ( 16 ). 
   
   
       10 . Set up according to  claim 1 , characterised in that said curved elements ( 25 ) are side-by-side and are suitable for inserting, at least partially through their ends, in grooves ( 26 ) formed in said lower roller ( 17 ).