Sheet guiding drum for use in sheet printing machine, has perforated plate provided to sheets in turned manner, and textile throttle layer arranged under plate, where another perforated plate is provided under layer and covering chambers

摘要

The drum has cylinder-dish-shaped guiding elements (18, 19) arranged at drum bodies (5, 16, 17). Air outlet openings are formed on a surface of the elements, where the surface is turned toward sheets (14, 15). Air chambers (27, 28) are attached to the elements and connected with a compressed air producer. A perforated plate is provided to the sheets in a turned manner. A textile throttle layer is arranged under the plate. Another perforated plate is provided under the throttle layer, and covers the air chambers. A template is provided between the plates, and comprises fabric or foil.