Mechanical device for picking and placing bobbin on frames

A mechanical device arranged on flyer frame for taking and putting cop tube mainly comprises a motor, a transmission shaft and a plurality of sets of cop tube taking parts, wherein, the two long loaded axles and the two short loaded axles which are positioned inside the cop tube taking parts are respectively arranged inside the driving-reversing drive unit and the reversing-driving drive unit which are connected with the transmission shaft through vertical meshing pair mode and rotate in opposite direction; the carriers arranged on the long loaded axles and the short loaded axles are provided with yarn taking-tube putting mechanisms which are matched with the lower spindle blades positioned below the carriers; moreover, the axial lines of the flyers arranged inside the yarn taking-tube putting mechanisms are positioned on the longitudinal perpendicular plane of the lower spindle blades. Driven by the driving-reversing drive unit and the reversing-driving drive unit, the long loaded axles and the short loaded