The invention relates to a device for forming piles of flat deformable objects comprising a transferring device which receives different objects delivered in pockets and supplies said objects to an arrangement device. A row of cases moves across said arrangement device in such a way that different objects are inserted into said cases. During insertion, the objects receive velocity components in adirection of the case displacement, whereas said objects are delayed until standstill in the previous direction thereof. Braking is carried out by a surface contact to the case wall or a pre-insertedobject in such a way that only low compression forces and through them deformation forces act upon.