Device for cutting a profile of a tire tread in a rubber profiled element, and cutting method using such a device

A device for cutting a profile of a tire tread in a profiled element made of a raw rubber mixture, the device comprising:

• a frame supporting a cutting assembly;
• and
• travel means configured to move the profiled element through the cutting assembly,
• wherein the cutting assembly comprises at least one cutter for cutting a longitudinal groove in an outer face of the profiled element and vibration-inducing means for inducing vibration in the at least one cutter in a transverse direction perpendicular to a direction of movement of the profiled element, and
• wherein the cutting assembly further comprises a support plate below which the at least one cutter is fixed, the support plate being arranged horizontally or in a tangent plane opposite the outer face of the profiled element in such a way that the at least one cutter can cut the longitudinal groove therein, and being mounted at its two lateral ends on two vertical lateral spring blades, each spring blade having a lower end fastened to the frame and an upper end fastened to the support plate in such a way that the support plate can move back and forth in a transverse direction perpendicular to the direction of movement of the profiled element under action of the vibration-inducing means.