Product orienting apparatus

1. A product orienting apparatus for orienting a product, the apparatus comprising:

a table comprising a rotatable device, the table having a table surface comprising at least a first surface area being provided by the rotatable device, the rotatable device being rotatable about an axis substantially perpendicular to the table surface;

an array of substantially identical spherical rollers, each spherical roller being suitable for contacting the product at a first contacting point of the spherical roller and for contacting the table surface with a second contacting point of the spherical roller, the array of spherical rollers comprising a first group of spherical rollers contacting the surface area of the rotatable device with their second contacting point thereby enabling to convert a rotation of the rotatable device into rotation of a product contacting the spherical rollers of the first group of spherical rollers; and

a plate having an aperture encompassing the rotatable device,

wherein the table surface comprising a second surface area provided by the plate, which second surface area is substantially coplanar with the first surface area, and wherein rotation of the product does not require vertically moving the rotatable device with respect to the table.

2. A product orienting apparatus as in claim 1 , wherein the spherical rollers are rotatably fixed in the aperture to keep the centres of the spherical rollers in a fixed position relative to the axis of rotation of the rotatable device during rotation of the rotatable device.

3. A product orienting apparatus as in claim 1 , wherein the apparatus comprises a conveyer belt to bring the product into contact with the first contacting point of at least part of the first group of spherical rollers having the second contacting point contacting the planar surface of the rotatable device when being brought into contact with the product.

4. A product orienting apparatus as in claim 1 , wherein the apparatus furthermore comprises a conveyer belt to remove the product from at least part of the first group of spherical rollers.

5. A product orienting apparatus as in claim 1 , wherein the spherical rollers are part of a conveyor belt, each spherical roller of the array of spherical rollers being rotatably retained in a cavity in the belt, the first and second contacting points of the spherical rollers being provided by salient parts of the spheres.

6. A product orienting apparatus as in claim 5 , wherein the conveyor belt is an endless belt moveable in a direction parallel to the table surface.

7. A product orienting apparatus as in claim 1 , wherein the array of spherical rollers comprises a second group of the spherical rollers having their second contacting point for contacting the second surface area.

8. A product orienting apparatus as in claim 1 , wherein the rotatable device is a disc.

9. A method to orient a product, the method comprising the steps of:

providing a product orienting apparatus for orienting a product, the product orienting apparatus comprising:

a table comprising a rotatable device, the table having a table surface comprising at least a first surface area being provided by the rotatable device, the rotatable device being rotatable about an axis substantially perpendicular to the table surface;

an array of substantially identical spherical rollers, each spherical roller being suitable for contacting the product at a first contacting point of the spherical roller and for contacting the table surface with a second contacting point of the spherical roller, the array of spherical rollers comprising a first group of spherical rollers contacting the surface area of the rotatable device with their second contacting point thereby enabling to convert a rotation of the rotatable device into rotation of a product contacting the spherical rollers of the first group of spherical rollers; and

a plate having an aperture encompassing the rotatable device,

wherein the table surface comprising a second surface area provided by the plate, which second surface area is substantially coplanar with the first surface area, and wherein rotation of the product does not require vertically moving the rotatable device with respect to the table;

bringing a product, to be rotated about an axis perpendicular to the table surface, into contact with the first contacting points of at least part of the first group of spherical rollers of the array;

rotating the product in a first direction about an axis perpendicular to the table surface by rotating the rotatable device in a direction opposite to the first direction while the second surface area of the device contacts the second contacting points of at least part of the first group of spherical rollers.

10. A method according to claim 9 , wherein the spherical rollers are part of a conveyor belt, each spherical roller of the array of spherical rollers being rotatably retained in a cavity in the belt, the first and second contacting points of the spherical rollers being provided by salient parts of the spheres, the method further comprising that the product to be rotated is brought into contact with the first surface of at least part of the first group of spherical rollers by moving the conveyor belt in direction parallel to the table surface.

11. A method according to claim 10 , wherein the array of spherical rollers comprising a second group of the spherical rollers having their second contacting point for contacting the second surface area, the method comprising moving the conveyor belt while the table surface contacts at least part of the array of spherical rollers.

12. A method according to claim 9 , wherein the product is a stack of sheet material.

13. A method according to claim 9 , wherein the product is a stack of sheets of paper or cardboard.