Automatic sampling device for chemical analysis with a sample collection / injection device guide device

摘要

An automatic sampling apparatus for use in instrumental chemical analyses comprising at least one workstation (1), fitted with an instrument for collecting/injecting (2) a sample to analyse, and a robot- controlled arm (100) with a head (12) for holding the instrument and a device (14, 15) for guiding said instrument extending from said head. The guide device comprises at least one pair of coplanar jaws (17, 18) that, in their coupling position, form an open-ended tubular seat (26) serving as a sliding guide for the instrument, the jaws being pivotally connected to a supporting element (13) integrally attached to the head (12) and comprising elastic means (28) designed to keep the jaws in the coupling position. The workstation (1) comprises actuator means (11) for rotating the jaws, counteracting the elastic means during the displacement of the head towards the workstation so as to open the jaws and thus open the open-ended tubular seat so that the instrument can engage therein.