Movement assembly of nucleic acid extraction and purification instrument

The utility model discloses a nucleic acid extraction and purification instrument motion assembly which comprises a base, a lifting frame is arranged on the upper surface of the base, an assembly frame is arranged on the upper surface of the lifting frame, a guide frame is arranged in the assembly frame, a moving sleeve is arranged in the guide frame, and a movable sleeve is arranged in the moving sleeve. Driven racks are arranged on the left side wall and the right side wall in the moving sleeve, and by arranging a reciprocating motor, when an output shaft of the reciprocating motor drives a half gear to rotate, through alternate meshing of the two sets of driven racks and the half gear, the moving sleeve vertically reciprocates up and down under the guiding effect of a guiding frame; the linkage sleeve plate drives the grid plate and the magnetic bar sleeve to move up and down in a reciprocating manner to stir and oscillate a sample in the sampling tube, so that the sample is cracked to release nucleic acid