An apparatus or device is described for forming a continuous and cadenced flow of groups of rolls of paper or other products, coming from the production line or from pre-packaging lines, and rotated by a carousel with horizontal shaft of rotation. The carousel is provided with the blades of L-shaped stalls which pass cyclically and in the right phase between and underneath pairs of supports, to raise the products positioned thereon and set them on a horizontal conveyor. The stalls are controlled to rotate with respect to the carousel in a direction opposite the direction of rotation of the carousel to avoid interference with the products once the products are placed on the horizontal conveyor.