Patent ID: 8409064

Claim:
A method for producing a packaging box with a polygonal section from at least two blanks of sheet cardboard or corrugated cardboard material, namely a first blank ( 2 ) forming the bottom of said box, and a second blank ( 3 ) comprising at least four panels ( 4 , 5 , 6 , 7 ) respectively connected together by third parallel fold lines ( 9 ), comprising a lower free edge lacking a flap on the side of the bottom, said second blank forming a cover for said box, characterized in that blanks are taken simultaneously from two adjacent magazines ( 25 , 26 ) and said blanks ( 2 , 3 ) are placed on two parallel tracks ( 29 , 30 ), namely a first track ( 29 ) for the first blank and a second track ( 30 ) for the second blank, said blanks are transferred flat to said tracks by being guided substantially with a lateral clearance between two rails ( 40 , 41 ; 42 , 43 ) by a stopper-drive system, until they butt longitudinally at an assembly station, in a determined longitudinal position for each of the blanks, said first blank ( 2 ) is glued during its transfer to the longitudinal abutment position ( 34 , 35 ), the first and second blanks are wedged in lateral abutment respectively in order to be given an exact lateral reference position, the second blank ( 3 ) is picked up, transferred laterally and placed on the first blank ( 2 ) thus indexed, by escaping the stoppers ( 61 ) of the first track when the second blank is placed beside the first, while being held by vertical-pressure immobilization, the second blank is then pressed onto the first blank in order to glue them together in their determined respective longitudinal positions, and then the assembly of blanks thus formed is transferred to a forming station ( 90 ) where the box is formed by rolling the blanks around a core.