Device for orderly transfer of products

1 . A transfer device for the orderly transfer of products, comprising a continuous conveyor belt closed on itself having an upper transport branch for a plurality of products defining an advancement path wound around a central point starting from a radially internal portion to a radially external portion, wherein an advancement direction of the upper transport branch of the conveyor belt along said advancement path extends from the radially internal portion to the radially external portion of the advancement path,

wherein said upper transport branch comprises a plurality of curvilinear sections lying on a common plane, said plurality of curvilinear sections comprising a first curvilinear section and a second curvilinear section radially more external with respect to the first curvilinear section, wherein the first curvilinear section and the second curvilinear section are side by side and adjacent to each other in a radial direction,

wherein said upper transport branch comprises a plurality of loops, wherein said first curvilinear section belongs to a first loop of said plurality of loops, and said second curvilinear section belongs to a second loop of said plurality of loops, wherein each loop of said plurality of loops defines a complete turn about said central point,

characterized in that

said device comprises a containment edge placed radially internally with respect to a most radially internal loop of said plurality of loops, said containment edge at least partially overlapping said most radially internal loop of the plurality of loops.

2 . The transfer device according to claim 1 , wherein said upper transport branch advances with a constant transport speed, wherein said transport speed is defined as the ratio between the distance between any two points on the advancement path and the time required to cover said distance.

3 . The transfer device according to claim 1 , wherein for each curvilinear section of said plurality of curvilinear sections a respective average radius of curvature is defined, said first curvilinear section and second curvilinear section defining respective average radii of curvature different from each other, so that the upper transport branch of the conveyor belt advances along the advancement path at the second curvilinear section with an angular speed different from the angular speed at the first curvilinear section.

4 . The transfer device according to claim 3 , wherein the average radius of curvature of the first curvilinear section is smaller than the average radius of curvature of the second curvilinear section.

5 . The transfer device according to claim 1 , wherein said first loop comprises a plurality of first curvilinear sections and said second loop comprises a plurality of second curvilinear sections, each first curvilinear section being side-by-side and adjacent in the radial direction to a respective second curvilinear section.

6 . The transfer device according to claim 1 , wherein each loop of said plurality of loops comprises a respective plurality of curvilinear sections, wherein curvilinear sections of one of the loops are side by side and adjacent in the radial direction to curvilinear sections of a different one of the loops.

7 . The transfer device according to, claim 3 wherein each curvilinear section of said plurality of curvilinear sections has a constant radius of curvature throughout its entire length.

8 . The transfer device according to claim 6 , wherein the curvilinear sections of a same loop of the plurality of loops are adjacent to each other along the advancement path.

9 . The transfer device according to claim 6 , wherein each loop comprises at least one straight section placed between two of the curvilinear sections of the same loop of the plurality of loops.

10 . The transfer device according claim 5 wherein the advancement path at each curvilinear section belonging to each loop follows a course defined by an arc of circumference subtending an angle comprised between 10° and 180°.

11 . The transfer device according to claim 1 , wherein said upper transport branch comprises an exit portion at least partly rectilinear placed at the radially external portion of the advancement path.

12 . The transfer device according to claim 1 , wherein the conveyor belt comprises a lower return branch continuously connected to the radially internal portion and to the radially external portion of the advancement path.

13 . The transfer device according to claim 1 , wherein said first curvilinear section and said second curvilinear section are spaced from each other in the radial direction by an amount less than one fifth of a width of the upper transport branch.

14 . The transfer device according to claim 5 , wherein each curvilinear section of said plurality of curvilinear sections has a constant radius of curvature throughout its entire length.

15 . The transfer device according to claim 6 , wherein each curvilinear section of said plurality of curvilinear sections has a constant radius of curvature throughout its entire length.

16 . The transfer device according to claim 8 , wherein the advancement path at each curvilinear section belonging to each loop follows a course defined by an arc of circumference subtending an angle comprised between 10° and 180°.

17 . The transfer device according to claim 9 , wherein the advancement path at each curvilinear section belonging to each loop follows a course defined by an arc of circumference subtending an angle comprised between 10° and 180°.

18 . The transfer device according to claim 12 , wherein said first curvilinear section and said second curvilinear section are spaced from each other in the radial direction by an amount less than one fifth of a width of the upper transport branch.