Feed system for paper sheets, to a sheet-fed printing press, has controlled deflection rollers at the suction belt to act on the sheets moving over the kinked transfer point between the feed plane and the belt

摘要

The system to carry paper sheets to a workstation by pushing them from below, and especially to a sheet-fed printing press, has a setting drive to control the in and out movements of the deflection rollers (8) at the downwards suction belt table (1), where the sheets are carried from the feed plane (5) through a kinked transfer point (7) to the suction belt. The control is linked to the machine control so that, at the start of a forward movement, the rollers are in a rest position over the feed plane. After the feed of at least two sheets (B) pushed from below over the kinked transfer point, the deflection rollers are activated to bear strongly against the suction belt. When a sheet has been caught between the rollers and the belt, the pressure is reduced.