Answer from AI Robotics Australasia. .
| Feature | Robotic palletising | Manual palletising |
|---|---|---|
| Best fit | Steady case rate, defined patterns, enough hours to load a cell | Short runs, fragile or odd product, constant format changes |
| What you actually buy | Robot, gripper, conveyors, pallet handling, safety, patterns | People, a pallet location, and often a lift assist you already needed |
| Failure mode | A bad infeed or an unscoped SKU stops the cell | Fatigue, injuries, and a rate that falls late in the shift |
| Changeovers | Fast if the pattern already exists. Slow if the case is new | Immediate, as long as someone knows the stack |
When the cell pays for itself
End-of-line lifting is a common injury and a common bottleneck. A cell earns its place when cases arrive at a rate people cannot hold all shift, the stack patterns are known, and the line runs enough hours that the equipment is not a monument to a peak week.
Mixed SKUs are solvable when each case is identified before the robot and the pattern library contains that product. They are not solvable by hoping the gripper copes. Identification, the gripper, and the pattern are one design.
When people should keep the pallet
A promotional pack that exists for three weeks, a case the gripper cannot hold, or a line that is rebuilt every season will make a robot look expensive. A lift table, a better pallet position, and staffing for the peak can be the whole answer.
Partial automation is legitimate. Some sites robot-palletise the main SKU and leave the oddments to a person. Designing for that split is better than forcing every case through one gripper.
Price the cell, not the arm
Conveyors, a pallet dispenser, slip sheets, stretch wrap, guarding, and the space to stage empty and full pallets often cost more than the robot. A quote that is only an arm and a gripper is not a palletising line.
We size the cell from the case, the rate, and the pattern list. Commercials are scoped after that assessment, not from a generic robot price.
Related questions
Is a palletising robot worth it?
Yes when the line rate, the hours, and the pattern list keep a cell busy and the infeed is under control. No when volume is occasional or the product changes faster than patterns can be added.
Cobot palletiser or industrial palletising robot?
A cobot palletiser suits lighter cases and lower rates, sometimes with less fencing after a risk assessment. High case rates and heavy product need an industrial arm and a guarded cell. Case weight and rate decide it.
What stops a palletising cell from hitting rate?
Uneven infeed, unidentified cases, gripper changes, waiting for pallets, and patterns that were never programmed. The arm's maximum speed is rarely the first limit.
Can one robot palletise multiple lines?
Sometimes, if the rates add up and the cases can be sequenced to it. Past a point, the conveyor and the scheduling are harder than buying a second cell. It has to be modelled on your rates, not assumed.