Needle positioning mechanism

Topic LCI-USG-0014, 最近更新 11/22/2024

A dual-axes needle positioning mechanism draws the samples from the vials in the sample plates that the sample manager will inject onto a chromatographic column.

To line up the needle with the vials in the wells of the sample plates inside the sample compartment, the needle positioning mechanism’s two rotary axes control the orientation of the sample plates and the relative position of the sample needle carriage. Both rotary axes rotate a shaft using a belt and motor. The needle carriage rotates approximately 90° away from the inject port while the sample plates are on a continuous 360° rotary axis.

Figure 1: Needle positioning mechanism’s dual-rotary axes, located below the sample compartment

: Platter rotary axis
: Belt
: Motor axis

Figure 2: Needle carriage's rotary axis, located inside the sample compartment

: Needle carriage
: Needle cartridge
: Needle carriage rotary axis

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Needle positioning mechanism