Automated Palletizing Systems Built in Singapore

Motionwell Automation designs, builds and integrates automated palletizing systems in Singapore, from single-arm cobot palletizers sitting beside an existing line to fully guarded industrial robot cells with accumulation infeed and pallet handling. The short answer most people arrive looking for: a cobot palletizer is the right choice when your case rate is in the low single digits per minute, your heaviest case plus the gripper fits inside the arm’s rated payload, and fencing an industrial cell would cost you an aisle you cannot spare. Above that, a fenced industrial robot is cheaper per case and far less frustrating to own.

This page covers how that decision gets made, how layer patterns are built and changed, which gripper suits cartons versus bags versus trays, how a palletizer ties into conveyors you already run, and what the safety scope looks like in Singapore. If you already have case dimensions, weights and a rate target, skip ahead and talk to an engineer.

When Is a Cobot Palletizer Better Than a Full Industrial Cell?

Both do the same job. They fail in different places, and the failure points are predictable.

How to Work Out Your Real Payload Budget

This is where most cobot palletizing projects go wrong before anyone touches CAD. Rated payload is measured at the tool flange, and your gripper hangs off that flange. A carton vacuum head with its manifold, ejectors and frame is not light, and whatever it weighs comes straight out of the budget left for the case.

Then subtract more. Rated payload assumes the load sits close to the flange. A vacuum plate holding a 400 mm carton pushes the centre of mass well out, and the resulting moment is what limits the arm, not the mass alone. Every collaborative arm publishes a payload-versus-centre-of-gravity chart. Read it before you pick one.

Do the arithmetic in this order: heaviest case in your SKU list, plus gripper mass, checked against the payload curve at your real tool centre of gravity and your real reach. If the heaviest SKU only just fits, it does not fit. Case weights drift, and someone will add a heavier SKU next year.

Where a Cobot Palletizer Is the Wrong Answer

A collaborative arm run as a power-and-force-limited application has its speed capped so any contact stays within the ISO/TS 15066 limits. That cap is the whole point of the technology, and it is also where the rate ceiling comes from. You don’t get around it by buying a faster arm. You get around it by adding guarding and speed, at which point you have built a small industrial cell with an expensive arm in it.

The other limit is reach. An arm mounted at floor level cannot place the top layer of a full pallet. The usual fix is a vertical lift column or a linear 7th axis, and Motionwell has designed and delivered low-profile robot linear tracks as a 7th axis on other machines. It is a solved problem, but it is added cost and added footprint. Once you are paying for a column, a pedestal and a fence anyway, compare that total against a 4-axis industrial palletizer before you commit.

Rule of thumb we apply internally: if the line runs three shifts, or the rate is above what one arm can hold on a single-case pick, we will tell you to buy the industrial robot.

Are We a Robotic Palletizer Manufacturer or an Integrator?

Worth being precise, because the phrase “robotic palletizer manufacturer” hides two different businesses. Motionwell does not manufacture robot arms, cameras or drives. We buy them. What we design and build is everything between the robot and your product: the gripper, the frame and pedestal, the infeed and squaring, the pallet handling, the guarding, the control system and the pattern software.

The arms we buy and integrate include ABB industrial robots, JAKA collaborative arms (seven units purchased to date), Yamaha SCARA for lighter handling, and Youibot AMRs where pallets or totes move between cells. We also have integration experience on customer-supplied Universal Robots arms across three projects, which is a different thing from stocking them.

The delivered end-of-line reference is our palletizing robot case study, covering robot selection, infeed accumulation, pattern programming and the safety design of a fenced cell.

How Do Palletizing Patterns Actually Get Programmed?

A palletizing pattern is two things stacked together: the layer pattern, which is how cases arrange within one layer, and the stack recipe, which is how layers repeat, rotate and interleave up the pallet.

Column, Interlock and Pinwheel Patterns

Three families cover almost everything.

Column stacking puts every case directly above the one below. It is the strongest pattern in pure compression, because case corners carry the load, and it is the weakest against toppling because nothing ties the layers together. Use it when you stretch wrap well and the pallet does not get handled much.

Interlocked patterns rotate alternate layers so cases bridge the seams below them. You lose some compression strength, since case walls no longer line up corner to corner, and you gain a lot of stability in transit. This is the default for most distribution.

Pinwheel patterns rotate cases around a central void. They suit case footprints that do not tile cleanly onto the pallet, and they interlock naturally between layers. The central void is not wasted space so much as the price of a footprint that does not divide evenly.

Two things constrain all three: overhang and underhang. Cases hanging over the pallet edge lose support and crush; cases sitting well inside it waste cube and let the stack lean. The pattern has to be built against the real pallet, which in Singapore is commonly 1200 x 1000 mm, sometimes 1200 x 800 mm EUR, and sometimes the 1100 x 1100 mm format used around the region.

Changeover Between SKUs

Patterns are stored as recipes, not as re-taught programs. A pattern editor generates placement coordinates from case dimensions and pallet size; the operator picks a recipe on the HMI, or the line PLC picks it from a barcode scan or an MES download. Nothing mechanical moves. That is the first thing to check on any quotation: ask how a new SKU gets added, by whom, and whether it needs the integrator on site.

Reach and clearance get verified in offline simulation before the cell is built, because a pattern that cannot be reached at layer eight is a mechanical problem, not a software one.

Which Gripper Suits Cartons, Bags and Trays?

The gripper is where palletizing projects are won or lost, and it is the one part nobody can buy off a shelf for a mixed line.

Cartons and Sealed Cases

Vacuum is the default. A foam or suction-cup plate on the top face, fed by vacuum generators and valve manifolds from SMC or Festo, picks a sealed carton cleanly and lets you take two or three cases at once when the layer allows. It fails on poor top-flap glue, on wet or dusty surfaces, and on anything out of a washdown zone. Where the top face is unreliable we add pneumatic side clamps, so the case is held mechanically and vacuum only assists.

Bags and Sacks

Vacuum on a woven or perforated sack is a bad bet. Bags want clamshell or fork-and-clamp tools that get underneath, support the full length, and lay the bag down under control so the fill settles flat. They also need a flattening step upstream: a bag arriving with a hump builds a pallet that leans by layer six.

Trays, Totes and Bare Product

Mechanical grippers, which is where we specify Schunk and DH Robotics units. Open-top trays give vacuum nothing to hold, so the tool grips the tray rim or tote flange. Bare product onto a slip sheet needs a tool designed against the product itself — a custom machine design job, not a component-selection job.

For mixed-format lines there are two honest options: one combination tool that compromises on every format, or a quick-change interface with a small tool rack. Which one wins depends on changeover frequency. Four format changes a shift argues for the combination tool; weekly changes argue for the rack.

How Does a Palletizer Tie Into Conveyors You Already Own?

Most end of line palletizing projects are retrofits, not greenfield lines. The palletizer has to accept whatever the existing line hands it, which means three separate integration problems.

Mechanical. Cases arrive at whatever height and pitch the old conveyor runs at. The new infeed has to match that height, then square and gap cases so the robot picks from a repeatable position. We build infeed sections around Interroll drum motors and motor-driven roller zones for zero-pressure accumulation, Intralox modular belt where product needs positive transfer or curves, and igus cable carriers. Case position is confirmed by SICK and ifm sensing, not assumed from a timer.

Electrical and control. The palletizer needs a handshake with the upstream line: case ready, accumulation full, pallet in position, pallet complete, fault. Motionwell’s largest current work line is control-system modernisation of legacy production machines, replacing ageing PLCs, servo drives and VFDs on Allen-Bradley, Siemens, Mitsubishi, Omron and Beckhoff platforms, so tying a new cell into old controls is routine here. Where an existing PLC is too old to extend safely we say so and quote the replacement, rather than bolting a second controller alongside it.

Downstream. A full pallet has to leave: either a manual forklift pull with the light curtain muted for the pallet opening, or automated discharge onto a chain conveyor feeding a stretch wrapper. Code verification happens before the case is stacked, using Keyence or Cognex readers, because finding a misprinted code after the pallet is wrapped is expensive. Wider material-flow context sits on the warehouse and intralogistics automation page.

What Safety Standards Apply to a Palletizing Cell?

Start from ISO 12100 risk assessment. The assessment decides the design, not the other way round. Industrial robot cells are then covered by ISO 10218-1 for the robot and ISO 10218-2 for the integrated system, with each safety function rated for performance level under ISO 13849-1. Collaborative applications add ISO/TS 15066.

One point gets missed often enough to state plainly: a collaborative robot is not the same thing as a collaborative application. A force-limited arm says nothing about the gripper, the case, or the pallet. Palletizing carries hazards that power-and-force limiting does not address at all — a case dropped from the top layer, a vacuum failure over an operator’s foot, a stack toppling into an aisle. Those get handled with fixed guarding under the pallet zone, safety laser scanners covering the approach, or speed-and-separation monitoring, not with a force limit on the arm. Our guide to collaborative robot safety standards works through that assessment.

Motionwell delivers the physical scope that follows: guard fencing and interlocked access doors, safety laser scanners, safety-rated stop circuits, LVD and CE testing, and MOM lifting certification where the machine includes lifting equipment. The company holds ISO 9001:2015 and bizSAFE Level 3, and machines are assembled and tested at our Woodlands Link facility before they ship.

What Drives Robotic Palletizer Cost?

A quotation here starts from your case list. Until we have dimensions, weights and formats for the SKUs you actually run, there is no number to give you, only a range wide enough to be useless. What we can tell you is what moves it.

Publicly listed packages are useful anchors: a distributor’s standard cobot palletizer bundle — arm, lift column, pedestal, one gripper — sits far below a fully guarded industrial cell with accumulation infeed, pallet dispenser and wrapper. Neither figure tells you what your line costs. The gripper and the infeed get custom-designed, and they vary most between two plants running what looks like the same product.

Where End-of-Line Palletizing Fits in the Rest of the Line

Palletizing is the last station, so it inherits every problem upstream. Cases that arrive skewed, under-filled, badly sealed or mislabelled all surface as palletizer faults, and the palletizer gets blamed for them. So when we scope an end-of-line cell we look at the two stations before it as well — which is why the same team also builds filling and sealing machines and case packing equipment.

Frequently Asked Questions

When should I choose a cobot palletizer instead of an industrial robot cell?

Choose a cobot palletizer when your case rate sits in the low single digits per minute, the heaviest case plus the gripper stays inside the arm's rated payload, and floor space is too tight to fence an industrial cell. Choose an industrial robot when you need sustained double-digit case rates, multi-case or full-layer picks, heavy cases, or continuous three-shift running. Rate and payload decide it, not preference.

How fast can an automated palletizing system run?

Rate is set by three things: pick cycle time, how many cases the gripper takes per pick, and how long the infeed takes to present a squared case. A collaborative arm running as a power-and-force-limited application is speed-limited by ISO/TS 15066 contact limits, so it lands well below a fenced industrial palletizer running at full programmed speed. Full-layer and multi-case grippers raise throughput more than raising arm speed does.

What drives the cost of a robotic palletizer?

Case rate, SKU count, and case condition drive most of it. After that: pallet stack height, whether the cell needs fencing or qualifies as a collaborative application, how much new conveyor is in scope, whether pallet dispensing and stretch wrapping are automated, and how deeply the system must talk to your existing PLC or MES. Motionwell quotes after a layout review, not from a catalogue.

Can one palletizer handle bags, cartons and trays on the same line?

Sometimes, but rarely well with a single gripper. Vacuum works on sealed cartons and fails on porous sacks and open-top trays. A mixed-format line usually needs either a combination tool with vacuum plus mechanical clamping, or a quick-change tool interface. Motionwell scopes this from your actual SKU list, because the two or three awkward SKUs decide the gripper design, not the easy majority.