Method and device for producing a groove near an intended edge part of a conveyor belt, which groove is intended to be filled with a filler having sealing properties

1. A method for producing a groove near an intended edge part of a conveyor belt for being filled with a filler having sealing properties, the method comprising:

advancing the conveyor belt in a predetermined belt travel direction;

bending the conveyor belt so that as the belt is advanced a surface of the belt to be cut has a convex curvature with the opposite belt surface having a concave curvature;

advancing the curved conveyor belt in the predetermined belt travel direction past a cutting element having a convexly curved cutting edge; and

cutting a longitudinal groove extending in the belt travel direction in the convexly curved belt surface with the convexly curved cutting edge so that the groove has a concave curved configuration opening in an opposite direction to the concave curvature of the opposite, uncut belt surface as the convexly curved belt surface is advanced past and cut by the cutting element.

2. The method according to claim 1 wherein the conveyor belt is bent to have a curvature having a radius of between 10 and 40 mm.

3. The method according to claim 1 , further comprising the step of:

introducing the filler into the groove.

4. The method according to claim 3 , further comprising the step of:

cutting the conveyor belt in the longitudinal direction of the groove and at least through the filler in order to form a sealed edge part on the conveyor belt.

5. The method according to claim 4 , in which the steps of:

cutting the groove; and

introducing a filler into the groove; and

cutting the conveyor belt through the filler, are carried out simultaneously on one conveyor belt.