PURPOSE: To arrange products so that their principal axes may be oriented perpendicularly to the advancing direction at a discharging part by providing a control means having sensitivity in relation to one signal to be generated from a sensor means and which acts on a driving means so as to change the transferring speed of a conveyor structure for eliminating displacement.

CONSTITUTION: This device is provided with at least two product conveyor structures operable in the transferring direction, independent driving means 5a, 5b capable of applying the movement having the different speeds to two conveyor structures, and sensor means 13a, 13b for detecting the orientation of the products and for generating at least one signal indicative of the displacement of principal axes of the products from the state perpendicular to the transferring direction. The driving means 5a, 5b are drive-controlled by a control means 23 so as to change the transferring speed of the conveyor structure in order to sense at least one signal generated from the sensor means 13a, 13b and in order to eliminate the displacement.