The invention provides a three-degree-of-freedom front arm
blood collection robot and solves the defect of manual
needle insertion for
blood drawing at present. The three-degree-of-freedom front arm
blood collection robot comprises a worktable, wherein a first drive arm, a second drive arm and a needle inserting mechanism are arranged on the worktable, the first drive arm and the worktable form rotatable connection through a first joint, the second drive arm and the first drive arm form rotatable connection through a second joint, the needle inserting mechanism and the second drive arm form rotatable connection through a third joint, the needle inserting mechanism comprises a rectangular frame, a driving motor, a
ball screw, a guide sliding rail and a movable sliding table, the driving motor is connected with the
ball screw, bearings are sheathed between the two ends of the
ball screw and the rectangular frame, a screw hole and a sliding hole are formed in the movable sliding table, a nut is connected into the screw hole in a penetrating manner, the nut is sheathed on the ball screw to form thread connection, a guide sliding
barrel is connected into the sliding hole in a penetrating manner, the guide sliding
barrel is sheathed on the guide sliding rail to form sliding connection, and the side part of the movable sliding table is fixedly connected with a
blood drawing needle. The three-degree-of-freedom front arm
blood collection robot adopts mechanical
blood drawing, the needle inserting accuracy is high and the safety is high.