Palletizing machines may be designed to handle one type of product, such as bag palletizers, case pickers, drum palletizers and bottle palletizers, or they may handle several different types of packages.
Distribution centers and manufacturing facilities handling incoming shipments often use depalletizers to unload packaged units, and palletizing machine accessories such as pallet dispensers and load transfer stations are used to assist in managing both pallets and loads.
Palletizing machines can be fully automatic or semi-automatic and are typically powered through hydraulic, pneumatic or electro-mechanical means. Three of the most common types of palletizing machines include robotic palletizers, low level palletizers and high level palletizers.
Fully automatic, robotic palletizing machines are typically stationed between a conveyor line of incoming product units and a pallet dispenser. A hydraulic robotic arm lifts cases, bottles, bags or drums using flat pincer arms or suction cup arms in organized rows onto a pallet, stacking units with near-perfect precision.
Robotic palletizing machines may be altered to work with different types of product units and are excellent for handling fragile or heavy product units, although they may be slower, as they can only place one unit or row at a time. Low level and high level palletizing machines are two types of conveyorized palletizing machines that have a feed area that receives the goods intended for palletization.
In low level palletizing machines, or floor-entry palletizing machines, products are loaded from the ground level, while high level palletizers are loaded from above or from the story above. The packaged units are received by roller conveyors and are continuously transferred and sorted to the pallets by automated conveyor rollers, allowing greater packaging speed than robotic palletizers.
Low and high level palletizing machines may be fully automatic, requiring no manual involvement, or they may be semi automatic, requiring loads to be manually connected and disconnected from the palletizer lifting arm.