The depalletizer is a machine made to remove the containers from a whole new pallet with thermo-shrinking nylon and place them on the line for their filling, and they can be both bottles ( glass and plastic), than cans.
It all starts with an operator with a forklift, who loads the pallets full, empty bottles or cans, onto a roller conveyor, and who unpacks it from the nylon wrapping that holds the whole pack of bottles or cans together.
It is then slowly fed into the machine through the rollers. The depalletizer then removes one layer at a time (the pallets are divided into 4/5/6 layers or more, depending on the type of container and their height, divided by plastic or paper interlayers) and this takes place through a grip from all the sides of the pallets to keep it immobile. A bar pushes the containers, one layer at a time on a steel plate, which, once filled, is brought to the height of the line and pushed onto an accumulation surface. From here, through a series of conveyor belts, the containers are sent to the first machine that arrives in order of processing on the line, which is usually the rinsing machine or the filling monoblock. This is the beginning of the whole bottling process.
Depalletizer: how it works
The depalletizer includes both an empty pallet warehouse and an interlayer warehouse, also has a system to remove the cardboard layer at the top and also the interlayers themselves.
NB: the one at the top is a cardboard layer which covers the last layer of the pallets, and which is removed by 4/5 suction cups on the arms, which lift the cap by suction and which are gradually removed from the pallets and must be eliminated.
Each type of container has different heights, whether they are 33 CL or 50 CL cans, or bottles of 250, 375, 500, 660, 750, 1000, 1500, 2000 CL (these are the most commonly used sizes, there are others) for this reason the machine has different programs preset in the PLC, to which the operator must communicate the exact code corresponding to the type of contenitore that must be unloaded and put on the line.