AIR GUIDANCE FOR A BELT DELIVERY IN A SHEET-FED PRINTING PRESS

摘要

The invention relates to a belt delivery for a sheet-fed printing press designed to receive sheets exiting a printing press in the sheet output region and to deposit said sheets in a delivery section to form a sheet stack (B5). The aim of the invention is to provide solutions for further counteracting the spread of emissions in the sheet delivery region. According to the invention, this is achieved by a belt delivery for a sheet-fed printing press, comprising a gripper track unit (1) that extends between a sheet infeed region and a sheet delivery region (B4), provided for the formation of a sheet stack (B5), and a lower track strand (TU) that runs from the sheet infeed region to the sheet delivery region (B4) and guides said sheets, in addition to an upper track strand (TO) that runs from the sheet delivery region (B4) back to the sheet infeed region without sheets. A track deflector (KU) is provided in the sheet delivery region and is used to propel the gripper systems (31) that run on the lower track strand (KU) upwards to the upper track strand (TO). The belt delivery is characterised in that a blower unit (4) is provided in a region lying below the track deflector (KU) along the front edge (QK) of the sheet stack (B5), said unit discharging an air curtain (5) that is directed upwards and that shields the web chamber, which is traversed by gripper systems (31) travelling upwards, from the environment.