The invention concerns a packaging installation consisting of finished products such as packs from batches (7) of articles (2), comprising: a conveyor (11) for receiving successive batches (7) of articles (2) to transport them from a so-called upstream side to a so-called downstream site; a forward moving path (9) along which the articles are transported one by one towards said conveyor (11) by being juxtaposed next to one another; means for transferring (14) the articles (2) from the forward moving path (9) to the conveyor (11), capable of grasping and assembling the articles (2) to form spaced apart batches (7); and an elevator (23) for flat transportation of cardboard blanks (24) or the like individually, set substantially flat on the elevator (23), towards said conveyor (11), and for arranging the blanks (24) on the conveyor (11) opposite the batches (7) of articles; means for driving (13) the conveyor (15), the transfer means (25) and the elevator The invention is characterised in that it comprises a device (16) automatically controlling the driving means (13, 15, 25), capable of applying to each driving means (13, 15, 25) a speed profile selected among a pre-programmed set of speed profiles, to adjust the step (P) and/or the number of articles (2) per batch (7) in accordance with the desired step and/or batch type.