Patent ID: 6098371
Filing Date: 2000-08-08
Classification: B65B

Abstract:
An automatic machine of the carousel type for individual packaging of rolls of paper of varying size comprising:a main carousel having a horizontal axis and including angularly equidistant seats opening outwardly and having dimensions adjustable according to size of the rolls to be packaged, each of said seats being suitable for containing a roll arranged with an axis thereof parallel to the axis of the main carousel, each of said seats including gripper means at a front end for holding a front transverse edge of a packaging sheet and having at a rear end a folding device normally in a retracted rest position, said folding device, upon actuation, closing the seat on a side of a circumference of the main carousel so as to fold onto a roll a rear transverse edge of the sheet still held at the front end by the gripper means;first adjustable means supplying in synchronism, to the gripper means of each seat of the main carousel, a packaging sheet having dimensions suited to size of a roll to be packaged and arranged above the seat;a first auxiliary carousel having an axis parallel to the axis of the main carousel located downstream of the sheet supplying means and including angularly equidistant grippers adjustable according to variation in size of rolls, each of said grippers gripping ends of a roll supplied by suitable supply means and oriented with the axis parallel to that of the main carousel, the first auxiliary carousel inserting a roll into each seat of the main carousel, while the roll is partially wrapped with the sheet which is held in the seat by the associated front gripper;folding means which in synchronism with intervention of the folding device of each of the seats of the main carousel and in synchronism with opening of the front gripper of the seat, fold onto a roll a front transverse edge of the sheet, while in synchronism the folding device returns to the rest position so as to allow the front and the rear transverse edges of the sheet to be arranged on top of one another;sealing means arranged downstream of the folding means and which in synchronism seal together the overlapped transverse front and rear edges of the packaging sheet;second adjustable means for folding onto the ends of each roll, located in the seats of the main carousel, the sections of packaging sheet which project from the ends of the rolls;a second auxiliary carousel having an axis parallel to that of the first auxiliary carousel and extracting in synchronism packaged rolls from the main carousel, holding the packaged rolls by ends thereof so as to keep the ends of the packaged rolls folded, the second auxiliary carousel being designed to transfer the packaged rolls to downstream conveying means;said downstream conveying means sealing the folded ends of the packaging of the rolls conveying away the rolls towards packing means.