Robotic Case and Carton Palletizing

Robotic Case and Carton Palletizing

Not sure which model fits?

Send the part weight, the reach you need and the cycle. We will name the model — and say plainly if a robot is not the right answer for it.

End-of-line palletizing is where most food and beverage plants meet their first robot. The case comes off the packer at a steady rate, the pattern is fixed, the pallet is standard — it is the most predictable job on the line, and the one where manual stacking most often becomes the bottleneck when a line speeds up. A case palletizing robot takes cases, cartons, trays and shrink packs off the end of the packing line and stacks them on the pallet in a programmed pattern.

The argument for a robot over a conventional layer palletizer is changeover. A layer palletizer is faster on one SKU; a robot handles a plant with fifteen SKUs, three case sizes and two pallet formats without mechanical adjustment. Where the product mix changes weekly, the robot wins on availability rather than on speed.

What gets palletized

Corrugated cases, shrink-wrapped multipacks, trays, crates, plastic pails, bottles in shippers, and layer-picked bottles or cans with a full-layer head. Food, beverage, dairy, household chemicals, cosmetics, pharmaceuticals and general packaging lines.

Choosing the robot

Cases are light, so the head, not the case, sets the payload: a two-case head or a full-layer head weighs considerably more than a single-case vacuum or fork head. Rate it on the head plus the maximum simultaneous pick.

  • RP18-25 — 25 kg, 1885 mm.
  • RP15-15 — 15 kg, 1530 mm. The manufacturer describes a compact structure.
  • RP24-130 — 130 kg, 2485 mm.
  • RP32-180 — 180 kg, 3130 mm.

Whether several lines can feed one cell, and which gripper fits — single case, multi-case or full layer — depends on the rate of each line and on the pack. Send us the packs per minute on each line and the pack dimensions and weight, and we will size the cell.

Reach again is measured to the top of the finished stack. A 2.0 m beverage pallet plus the head height is beyond what a 1.5 m arm will do, however light the case.

For small packs, trays and cartons at high rate over a short distance, a SCARA robot is faster than a jointed arm — the RS12-60Z40H reaches 1200 mm at 60 kg.

What else the cell needs

Case gripper — vacuum, fork or clamp, chosen by case surface, weight and whether the flaps are sealed — plus a case turning and accumulation conveyor, pallet dispenser, slip-sheet placer where the stack requires it, stretch wrapper, and interlocked fencing with a pallet exit that does not stop the cell.

Cold-store and washdown environments change the specification of both robot and gripper. Say so early; it is not a detail that can be added afterwards.

Get a quotation

Send case dimensions and weight, cases per minute, the pallet pattern and stack height, and the number of SKUs. We will size the robot and the head and quote the cell.

Recommended models

Frequently Asked Questions

What is a case palletizing robot?
A robot at the end of the packing line that picks cases, cartons, trays or shrink packs from the conveyor and stacks them on the pallet in a programmed pattern. The pattern, the number of layers and the pallet format are program parameters, so a new SKU means selecting a different program rather than a mechanical changeover.
Which CRP robots are used for robotic case palletizing?
The RP palletizing series. These robots have four axes — J1, J2, J3 and J6 — and J6 turns the load through ±360°: RP15-15 (15 kg, 1530 mm), RP18-25 (25 kg, 1885 mm), RP24-130 (130 kg, 2485 mm) and RP32-180 (180 kg, 3130 mm). Choose the model by the weight of the gripper plus the heaviest simultaneous pick, and by the reach to the top corner of the finished stack.
Why a four-axis robot rather than a six-axis arm?
Cases are placed flat, so the wrist does not need to tilt, and on palletizing a four-axis robot is faster than a six-axis one. Where a case has to be tilted or presented at an angle, a six-axis arm is chosen instead.
What do you need to quote a case palletizing cell?
Case dimensions and weight, cases per minute on each line, the pallet pattern and stack height, and the number of SKUs. We will size the robot and the gripper and quote the cell.
What warranty and support come with the robot?
A two-year warranty on the robot. Technical support is an online consultation with engineers, and spare parts are shipped directly from the CRP factory.

Chengdu CRP builds the controller, not just the arm

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Chengdu CRP, the manufacturer, develops its own control system and builds its own controller. Send the task and an engineer answers with a model, a configuration and a price.WhatsApp +86 187 2185 5588