Robots don’t fix bad basics on the packaging line

We dropped a cobot palletizer on our 1- and 5-gallon lines to cut strain and cover breaks. Week one it was doing the robot two-step while we chased “little” issues: cases out of square from a tired erector, tape tails hanging, labels flagging, caps sitting proud by a millimeter, dusty slip sheets. The EOAT kept missing or dropping because the cups glazed with chemical mist and corrugated dust, and we almost blamed the arm.

Instead of adding more vision and IO, we worked upstream. Rebuilt the erector and set squareness checks, tuned the taper and added a tail tucker, tightened cap torque variation, swapped the suction cups to FKM and added a cheap inline vac filter and an air knife, standardized pallets and slip sheets, and put a simple go/no-go for case compression. Throughput jumped before we touched robot code. After that, the same cobot ran three shifts with one or two attention stops instead of twenty.

Takeaway: robots multiply whatever stability you already have. If the basics are shaky, automation just multiplies the misses. Where do you draw the line before greenlighting a robot on a packaging cell? What pre-checks or quick fixes have given you more uptime than a new arm?