Full-automatic sample-adding device for blood-type testing instrument

The invention discloses a full-automatic sample-adding device for a blood-type testing instrument. Two Y-axis motors are arranged at one end of a bracket, and are connected with and drive a first synchronous belt and a second synchronous belt respectively; a motor synchronous pulley is arranged on a power output shaft on the bottom side of each Y-axis motor in a sleeving manner; synchronous pulleys corresponding to the motor synchronous pulleys are arranged on the bottom side of the other end of the bracket; each of the first synchronous belt and the second synchronous belt is arranged on each motor synchronous pulley and each synchronous pulley in an encircling manner; two sample-adding needle mechanical arms are fixed on the first synchronous belt and the second synchronous belt through belt pressing plates respectively; each sample-adding needle mechanical arm comprises a vertically arranged slide track and a motor plate; a rack is arranged on and connected with the front surface of each slide track in a sliding manner; a sampling needle liquid level device seat is fixedly connected with the bottom of each rack through a connecter; a sample-adding needle is fixed on each sampling needle liquid level device seat; a Z-axis motor is arranged on the back surface of each motor plate; a gear meshed with the rack is arranged on a power output shaft of each Z-axis motor; each motor plate is fixedly connected with each slide track through a slide block, and each belt pressing plate is fixedly connected with the bottom of each motor plate.