System for overlapping successively moved sheets - has air blasts designed to allow overlap

摘要

When overlapping sheets (25) which are conveyed one behind the other in one plane, a blast of air (27) acts in the manner of an air cushion in the overlapping area (6) on the top side onto the sheet, whereby from the area in front of the overlapping area (6). The air blast (26) is blown in the conveyor direction into the overlapping area to build up on the top side of the sheet at the end of the overlapping area when the sheet leaves the area before the overlapping area. Deflection member (14) are set in the overlapping area above the conveyor plane (16), and acts on the sheet comprising a blower box (14) with several nozzle holes (17, 18) for the jets (27) of air blown towards the conveyor plane whilst a flat inclined guide element (21) adjoins the blower box and leads into the following guide and conveyor means (9, 24). ADVANTAGE - The deflection takes place without consideration of the conveyor speed of the sheet and inlet of the sheet end into the overlapping area.