To provide a device for aligning products randomly arrive from at least two devices onto a conveyor at a constant pitch.

A device is provided with many adjacent conveyor belts 1, 2 as many conveyor belts as input tracks, sensors F1, F2 facing respective conveyor belts 1, 2 and for measuring the arrival of the products on the corresponding belts 1, 2, actuators M1, M2 having position transducers for respective conveyor belts 1, 2, and a controller connected to the actuators M1, M2, the sensors F1, F2 and the position transducers. The controller controls the movements of the conveyor belts 1, 2 so that the output products may be aligned at a specified preset pitch, and many products P21, P22 arriving through at least two non-correlated tracks are aligned at a specified pitch along one outlet track 9 or 19.