Device for manufacturing perfect-bound products

A perfect binder machine for manufacturing printed products from book blocks, comprising:

• a book block conveyor (10) with an endless loop (11) that continuously revolves around deflection pulleys (12, 13) at a conveying speed and defines straight conveying sections between the pulleys, and a plurality of clamps (14) of length (L) that are respectively arranged on the endless loop at the same pitch spacing (T) from one another for clamping the book blocks (3, 3.1 . . . 3.8);
• and
• at least one processing station that is arranged along a straight conveying section and is adjustable by a motor drive, wherein
• said processing station is selected from the group including a book block infeed station (25), a spine processing station (18), a glue application station (19), a cover feeder (20), a pressing station (21, 22) and a delivery station (30);
• a cycle time (t0) of the processing station is defined by the conveyance of a clamp (14) by the pitch spacing (T) through the processing station (25, 18, 19, 20, 21, 22, 30);
• and
• the cycle time (t0) of the processing station is divided into an adjusting time segment (tv1, tv2) for resetting the processing station (25, 18, 19, 20, 21, 22, 30) in accordance with changing printed product characteristics of an upstream book block and a processing time segment (tB1, tB2) for processing said upstream book block (3, 3.1 . . . 3.8, 4, 4.1 . . . 4.4).