ASSEMBLY HEAD COMPRISING A STEPPED-DRIVE ROTATING ROTOR AND A PNEUMATIC PRESSURE CONTROL DEVICE

摘要

The assembly head (15) comprises a permanent retaining circuit for all pipettes (1) with a vacuum flow. In a placing or picking station the relevant pipette is additionally connected to a stationary regulator valve, the working pressure of which may be superimposed on the permanent vacuum to regulate between over- and under-pressure. The process reliability of the assembly head may thus be significantly improved.