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1 Introduction to the Autosampler

Transport Assembly

The transport unit comprises an X-axis slide (left-right motion), a Z-axis arm

(up-down motion), and a gripper assembly (rotation and vial-gripping).

Figure 7 Transport Assembly

The transport assembly uses four stepper motors driven in closed-loop mode

for accurate positioning of the gripper assembly for sample-vial transport. The

rotational movement of the motors is converted to linear motion (X- and

Z-axes) by toothed belts connected to the drive spindles. The rotation (theta

axes) of the gripper assembly is transferred from the motor by a toothed belt

and series of gears. The opening and closing of the gripper fingers are driven

by a stepper motor linked by a toothed belt to the planetary gearing inside the

gripper assembly.

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Agilent Technologies G2260A User Manual

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