Device for stacking flat items

A device for stacking flat items, having stacking wheels and stacking fingers and compartments located between the stacking fingers for receiving flat items to be stacked, a conveying device for conveying the flat items into the compartments of the stacking wheels, a stripper for removing the flat items from the compartments of the stacking wheels, a support for receiving the flat items removed from the compartments of the stacking wheels and for forming a stack of flat items,

• wherein
• at least one first stacking wheel mounted on a first shaft and at least one second stacking wheel mounted on a second shaft,
• wherein the shafts of the stacking wheels are parallel to each other in an axial direction and arranged at a distance d from each other so that a central point of the first shaft and a central point of the second shaft lie in a plane,
• wherein the first and the second stacking wheel are driven at the same speed and in the same rotational direction so that a resultant opening between the first and second compartments is created depending on the angular position of the first and second stacking wheels,
• wherein portions of the opening between the first and second compartments, which in the respective angular positions are perpendicular to the plane, are constricted by the distance d, whereas portions of the opening between the first and second compartments which are parallel to the plane are unchanged with respect to their opening width.