Pneumatic-Cushion Gripper — Corner-Element End-Effector

Corner elements are geometrically different from standard facing brick — and they're tolerance-critical because they interface with both wall and corner in ventilated façade installations. A standard flat-grip gripper that works fine on standard brick risks marking, edge-chipping, or angled-surface mis-gripping on corner products.

What corner elements demand from the gripper

• *Conformable contact.* Corner geometry varies along the edge — rigid gripping surfaces don't conform; pneumatic cushions do.
• *Edge protection.* Corner products are visible on installation. Edge chipping or surface scuffing from the gripper is a defect that propagates into the façade.
• *Stacking-pattern compatibility.* Corner products stack into their own cage patterns; the gripper has to follow corner-specific preset programs.

Why a separate gripper rather than a universal one

A universal gripper that handles both standard brick and corner elements would compromise on both. The line architecture instead is: standard gripper as default, swap to specialty grippers (this one, plus rotary for tiles) when the run shifts. Magnetic mount makes the swap fast.

We designed a gripper using pneumatic cushions as the contact surface — conformable, non-marking, sized to the cladding-line robot's standard 15 kg load capacity and standard magnetic mount.

Engineering inputs

• *Pneumatic cushion contact.* Conformable contact surfaces that grip corner geometry without rigid contact loads on visible faces.
• *15 kg load envelope.* Matches the standard line gripper family — interchangeable on the same robot via the magnetic mount.
• *Corner stacking program.* Cell controller runs corner-specific preset patterns; the gripper executes.
• *Edge protection.* Cushion geometry tuned to keep contact off the visible edges that interface with façade installation.

Why pneumatic, not vacuum or mechanical

Vacuum cups need a flat sealing surface — corner geometry doesn't reliably provide one. Mechanical jaws need rigid contact — corner edges chip. Pneumatic cushions conform to the local geometry and distribute contact load — the right physics for this product class.

The pneumatic-cushion gripper handles corner products at 15 kg load capacity, swappable onto any standard cladding-line robot via the magnetic mount. Corner elements arrive at the cage with cladding-spec surface finish preserved.

Production behavior

• *Surface preservation.* Visible edges arrive at the cage without contact damage.
• *Stacking-program follower.* Corner-specific cage patterns executed without operator intervention.
• *Family interchange.* Same magnetic mount as the standard gripper — swap as the production run shifts product type.

Specialty grippers cost more per unit than universal designs. The economic answer is family architecture: one default gripper (the standard), plus a small set of specialty grippers (pneumatic-cushion corner, rotary tile, large-format) that share a magnetic mount and swap in only when needed.

For a line that runs corner elements as 10-20% of its production, the right answer is this dedicated gripper plus the standard for the rest. The corner-quality outcome is meaningfully better than a universal gripper would deliver — and the swap cost is 30 seconds at the mount.