Ball pin automatic connecting line and ball pin automatic line structure

The utility model provides an automatic ball pin connecting line and automatic ball pin line structure which comprises an automatic ball pin connecting line structure and an automatic ball pin line structure, the automatic ball pin connecting line structure comprises a plurality of numerically controlled lathes which are arranged in parallel, and an annular conveying belt is arranged on the same side of the numerically controlled lathes. A movable conveying line is arranged between any numerical control lathe and the annular conveying belt, the side, away from the movable conveying line, of the annular conveying belt is provided with a Marpos testing table, the ball pin automatic line structure comprises an eddy current flaw detector used for detecting machined ball pins, one end of the eddy current flaw detector is close to the Marpos testing table, and the other end of the eddy current flaw detector is close to the annular conveying belt. And the other end of the eddy current flaw detector is connected with