| Scope | Air conveyor, roller conveyor, depalletizer, palletizer |
| Function | Move bottles and cases without damage, stack outbound pallets |
| Key control | Accumulation pressure, guide rail gap, pattern repeatability |
| Types | Semi-automatic and automatic palletizing |
| Key decision | Manual, semi-automatic or robotic palletizing |
| Automation | Manual, semi-automatic or robotic |
The conveyor is the only part of the line that touches every bottle. Guide rail gaps, transfer plate height and accumulation pressure decide whether bottles jam, scuff or fall. Most unexplained short stops on a mature line trace back to a transfer that was set for one bottle format and never re-set.
Automatic palletizing pays when the labour it replaces is continuous and the pattern is stable. A plant running two shifts at high case rates reaches payback faster than a single-shift plant with mixed patterns, because a robot needs the pattern defined before it can be programmed.
| Function | Manual | Automatic |
|---|---|---|
| Depalletizing empty bottles | Rack or hand stack | Layer depalletizer |
| Case palletizing | Operator with pattern sheet | Layer or robotic palletizer |
| Pallet wrapping | Hand wrapper | In-line stretch wrapper |
| Accumulation | None, line stops together | Buffer sized to longest stop |
Site requirements, air and power consumption sit with the Depalletizing & Palletizing.
Floor loading for a full pallet stack, clear height for the mast or robot envelope, and a pallet dispenser within reach of the operator. These are building decisions taken before the machine is ordered, and changing them later costs more than the palletizer.
Site requirements, air and power consumption sit with the Conveying.
Enough to cover the longest normal downstream stop without stopping the filler. Beyond that, accumulation only hides the problem and adds floor space. The number comes from the stop-time log, not from a rule of thumb.
The same question is worked through from another angle in How to Integrate Depalletizers and Palletizers for Efficient Flow.
When the pattern mix is wide and the pack is fragile. A layer palletizer is faster on one stable pattern; a robot changes pattern by program. Most plants with more than three patterns choose the robot for that reason alone.
A depalletizer unloads empty bottles or full cases from a pallet at the start of a line. A palletizer stacks finished cases onto a pallet at the end. They are separate machines with separate footprints.
A robot is more flexible across patterns and gentler on the pack; a layer palletizer is faster for a single stable pattern. The choice follows the pattern mix, not the technology.
Low air pressure, a worn layer clamp, or a pallet that is not square. Empty bottle layers are light, so small errors become fallen bottles at the infeed.
It follows the filler rate with margin for accumulation, not the maximum the conveyor can carry. Running a conveyor faster than the line needs increases scuffing and jam severity.
When the pattern is stable and the labour is available at the end of the line. It costs less and runs slower, and it needs an operator for every layer change.
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