DEVICE FOR THE AUTOMATIC REPLACEMENT OF AN INSTRUMENT FOR AUTOSAMPLERS

摘要

A device for the automatic replacement of an instrument on a robotic autosampler arm ending with an operating head (1) moving in three orthogonal directions and cooperating with at least one station (3) for the temporary storage of the instrument. The instrument replacement device comprises an attachment plate (4) which can be connected to the head (1) of the autosampler arm and an instrument-holder assembly (13) positioned removably on the storage station (3) and provided with hooking means (27a,b;28) for engaging on the attachment plate (4) following a movement of approach of the head (1) of the autosampler arm towards the storage station (3), whereby said instrument-holder assembly (13) is disengaged from the storage station (3) and made temporarily integral with the head (1). The storage station (3) comprises means (15) for disconnecting the instrument-holder assembly from the head suitable for moving the hooking means (27a,b;28) in relation to the attachment plate (4) to cause their mutual disengagement when said instrument-holder assembly (13) is deposited on the storage station (3).