Lift centring device (HZE) with holding-down clamp

Lift centring devices are installed in the STEIN 300 transfer system. In combination with the transfer system, HZE units with holding-down clamps facilitate the following operations:

• The precise positioning of workpiece carriers (and thus the workpieces they hold).
• Lifting and support of workpiece carriers during forceful processing operations on the workpiece.
• Exact vertical positioning thanks to the holding-down clamps.
• Preventing the unintentional withdrawal of a workpiece carrier during a processing task.

Other advantages of these units include:

• Less strain on the conveyor while workpieces are being processed.
• Reduced wear on the drive belt.

Workpiece carriers are brought to a halt by a stopper and pre-positioned. The entire lift centring device is then raised by pneumatics. The centring bold engages with the centring bushes on the workpiece carrier and precisely positions it with an accuracy of ± 0.02 mm. The entire workpiece carrier rests firmly on the base plate of the lift centring device and is gripped by holding-down clamps (not shown).