Division KELLER
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Handling systems

Innovative KELLER handling technology

KELLER handling technology is one of our product segments in which we are constantly developing and meeting the challenges of the market.

Our conventional and robot-assisted handling systems are specially designed for handling unit loads in abrasive environments.

In the building materials industry, as well as in related industries, our technology is characterized by long service lives and low wear under high loads.

Robot systems in the heavy clay industry

Robust palletizing robots with payloads of up to 1300 kg are used in brick plants. Delta robots are also used for sorting and packing smaller products. They have a total of four degrees of freedom at their disposal with a 4-axis wrist.

Thanks to the use of servo-motor grippers, most format changes in brickworks can now be carried out fully automatically. Otherwise, gripper stations enable automated gripper changes to be carried out just as quickly and easily in the event of format or product changes.

In contrast to many other areas of application, the robots used in the heavy clay industry not only have to prove themselves in continuous operation around the clock, they are also exposed to extreme dust and dirt loads.

Robot application - wet side

Freshly extruded and cut backing bricks are always exposed to the risk of being deformed during handling due to their high mixing water content as well as their hole pattern. The handling of the so-called shaped bricks on the wet side is therefore considered to be particularly demanding and difficult.

Special features

  • very sensitive design of robot and gripper
  • gentle gripping and setting down in the motion sequence

Robot application - roof tile presses

Due to their mixing water content as well as their shape and size, flat tiles are also exposed to the risk of being deformed during loading and unloading of the roof tile press. Robots and grippers for loading and unloading roof tile presses must therefore also be designed very sensitively.

Special features

  • very sensitive design of robot and gripper
  • gentle gripping and setting down

Robot application - setting and unloading systems

Robotic setting and unloading systems are now standard in the heavy clay industry. They unload the dryer cars, load and unload the kiln cars, and transfer the bricks from one transport route to the other at the interfaces between the individual areas.

Special features

  • flexible design for quick changeover of formats
  • smooth gripping and precise positioning
  • smooth integration into already existing lines

Robot application - backfilling of backing bricks

With the introduction of the Energy Saving Ordinance 2009, backfilled hollow bricks have become the new standard in Germany. KELLER has played a major role in developing the technology of backfilling and is considered one of the world's leading suppliers of backfilling systems for various insulation materials.

Special features

  • precise cutting and exact feeding of the backfill cuttings to be picked up by the backfilling robot
  • precise and compression-free insertion of the backfill cuttings in the backfill station

Robot application - packing and shipping

In most cases, the finished facing and backing bricks as well as pavers are stacked directly on pallets in the robotic systems for packaging and shipping for transport to the customer, which are then welded in or banded. In the case of roof tiles, roof tile accessories, floor tiles and brick slips, the finished products are first grouped into packages by 6-axis articulated robots, which are then either shrink-wrapped, banded or packed in outer cartons. 4-axis Delta robots are also used for sorting and packing smaller products such as brick slips.

Special features

  • Combination gripper suction devices for gripping pallets, interleaving paper and bricks.
  • Suction of the interleaving paper and gripping of the bricks in one operation
  • servo-motorized grippers for uninterrupted format change for facing and backing bricks
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