Overturning mechanism for overturning blood taking needle on blood taking needle assembly line

The utility model discloses an overturning mechanism for overturning a blood taking needle on a blood taking needle assembly line. The overturning mechanism comprises a fixed support which is fixed on a working platform, a grabbing mechanism, a traction lever, a lifting mechanism, a gravity switching mechanism and a rotating mechanism. The first end of the traction lever is rotatably connected to the fixed support, the second end of the traction lever is rotatably connected to the gravity switching mechanism, and the grabbing mechanism is connected to the movable end of the rotating mechanism and is connected to the gravity switching mechanism through the rotating mechanism. The output end of the lifting mechanism is connected to a fulcrum of the traction lever through the gravity switching mechanism, the second end of the traction lever and the fixed end of the rotating mechanism are connected into a combined mechanism, and the combined mechanism is connected with the lifting mechanism through the gravity switching mechanism. The traction lever, the lifting mechanism, the gravity switching mechanism and the rotating mechanism form a mutual linkage combined mechanism. The overturning speed of the blood taking needle is high, the overturning structure is unified, the control precision is high, and therefore the assembling efficiency and the assembling quality of the blood taking needle are improved.