Assembly head comprising a stepped-drive rotating rotor and a pneumatic pressure control device

Abstract

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.

Description

[0001] This application is a divisional application with the title of invention "Assembly head with step-rotatable rotor and pneumatic pressure control device" and application number 2002811325X. technical field

[0002] The invention relates to an assembly head walkable on linear guides, with a stator and a stepwise rotatable rotor, with a plurality of suction tubes for sucking in electronic components, wherein the suction tubes are connected to pneumatic pipes; each suction tube can Access to the installation-or extraction position; the suction pipe in this position is subjected to a pneumatic pulse via the control valve and can be connected to a fixed pipeline by means of a circular slide valve. Background technique

[0003] EP 0 879 550 B1 discloses a control valve designed as a mechanically actuated directional valve, via which the suction line is selectively connected to vacuum or compressed air. In this respect, it is common to store vacuum threshold values ​​for diff...

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