Systems with one or more stations collecting production from several different lines. Production collection preparation unit which is useful for creating the required pallet layouts and managing entry rate, decreasing the number of robot cycles used. Product grip heads to ensure accuracy and product integrity at the required speeds. Operation with 4/5/6-axis robots for highly accurate positioning on pallets. Dedicated centring/guide systems to handle box or demi-box pallets. Systems to supply empty pallets to ensure prolonged self-management without operator intervention. Integration in pallet wrapping lines.