ROLLER FOR GLASS SHEET CONVEYING DEVICE
A conveyance device for glass sheets advancing them one after the other, includes at least one roller including a glass sheet conveyance area, the device including actuators located on either side of the conveyance area capable of bending the roller within its elastic deformation domain while leaving it able to be driven in rotation around fixed centers of its sections, wherein the roller includes a shaft and a plurality of bending rings into which the shaft is inserted.
1 . A conveyance device for glass sheets advancing them one after the other, comprising:
at least one roller comprising a glass sheet conveyance area,
actuators located on either side of the conveyance area capable of bending the roller within its elastic deformation domain while leaving it able to be driven in rotation around fixed centers of its sections,
wherein said at least one roller comprises a shaft and a plurality of bending rings into which said shaft is inserted, the rings being tightly mounted on said shaft.
2 . The device according to claim 1 , comprising a plurality of said roller, that are parallel to one another, forming a web of rollers in contact with which the glass sheets are conveyed one after the other.
3 . The device according to claim 1 , wherein the at least one roller is a first roller, said device comprising a second roller, the first and second rollers forming a roller pair, generally having different dimensions and being parallel to one another and with a constant spacing over their full length.
4 . The device according to claim 3 , comprising a plurality of roller pairs forming a web of lower rollers and a web of upper rollers for exerting a bending on the glass sheets passing between the webs of lower and upper rollers, said bending having at least one transverse direction perpendicular to the direction of conveyance of the glass sheets.
5 . The device according to claim 4 , wherein the webs of lower and upper rollers have a curved profile ascending or descending in the direction of conveyance of the glass sheets in order also to exert a longitudinal bending on the glass sheets.
6 . The device according to claim 1 , wherein the actuators are capable of giving to the roller on either side of the conveyance area, a dimension and a direction giving it an asymmetrical shape relative to a plane orthogonal to it and located equidistant from the actuators.
7 . The device according to claim 1 , the bending rings of said roller are dimensioned in order to give it to give a specific profile.
8 . The device according to claim 1 , wherein the bending rings are mounted such that a spacing between lateral faces of two contiguous bending rings is greater than 0 mm and less than 5 mm.
9 . The device according to claim 8 , wherein the spacing between the bending rings is constant.
10 . The device according to claim 9 , wherein each bending ring comprises at least one projection on one of the lateral faces ensuring the spacing between the lateral faces of two contiguous rings.
11 . The device according to claim 10 , wherein each bending ring comprises a projection on each of its lateral faces ensuring the spacing between the lateral faces of two contiguous rings.
12 . The bending device according to claim 1 , wherein the bending rings comprise a chamfer on each edge between the section and a lateral face.
13 . The bending device according to claim 1 , wherein each bending ring comprises a central opening having an inner face, said inner face comprising a chamfer on each edge between the inner face and a lateral face.
14 . The device according to claim 12 , wherein the chamfers have a width between 0.1 and 0.5 mm with an angle of between 30 and 60°.
15 . The device according to claim 13 , wherein the chamfers have a width between 1 and 5 mm and an angle of between 10 and 60°.
16 . The device according to claim 8 , wherein the bending rings are mounted such that the spacing between the lateral faces of two contiguous bending rings is between 0.3 and 3 mm.
17 . The device according to claim 8 , wherein the bending rings are mounted such that the spacing between the lateral faces of two contiguous bending rings is between 0.5 and 1.5 mm.
18 . The device according to claim 12 , wherein the chamfers have a width between 0.2 and 0.4 mm.
19 . The device according to claim 14 , wherein the chamfers have a width between 0.2 and 0.4 mm.
20 . The device according to claim 14 , wherein the angle is 45°.
21 . The device according to claim 15 , wherein the chamfers have a width between 2 and 4 mm and an angle of between 15 and 45°.