Device for aligning flat objects

A device for aligning several flat objects, each of which extends in an object plane and together form a stack, comprising:

• a supporting device for supporting the objects;
• at least two boundary elements configured to swivel into an engaging position;
• a drive for moving the boundary elements backwards and forwards, with the at least two boundary elements in the engaging position holding the stack, if the stack with the objects is located on the supporting surface and positioned between the boundary elements;
• wherein the supporting device includes two aligning surfaces for aligning the objects,
• wherein the aligning surfaces lie in two planes that abut each other at a straight edge,
• wherein both aligning devices slope steeply towards the edge;
• wherein the device includes a motor for setting the aligning surfaces in vibration, and
• wherein the drive is connected to the boundary elements to move the boundary elements backwards and forwards parallel to the edge when said boundary elements are in the engaging position.