Feed mechanism for web fed rotary printing appts., rotary offset printer

摘要

The invention relates to a sheet conveyer (1) for conveying sheet-like material (2) in a rotary press. Said conveyer comprises a first guide rail (6a) and a second guide rail (6b) extending parallel thereto. An associated first and second advance member (10a, 10b) forming the armature of an electrical linear drive is guided without play. The two advance members (10a, 10b) are in the form of link chains with at least two individual links (22a, 22b) consisting of magnetisable material, and are connected by a bar (16) to grippers (14) fastened thereto and for holding the sheet (2). The advance members (10a, 10b) are driven by drive stations (8a, 8b) arranged outside the guide rails (6a, 6b) and having reels (28) which form the stator of the linear drive and are arranged at a distance (D) from each other, said distance being substantially smaller than or identical to the length (L) of the advance members (10a, 10b).