Operation principle of the whole machine: This equipment is composed of a U-shaped connecting rod feeding mechanism, a U-shaped connecting rod distributing mechanism, a three-axis module, a conveying positioning system, a return system, a handling mechanism, etc. The U-shaped connecting rod distributing mechanism is a U-shaped connecting rod distributing mechanism. After the U-shaped connecting rod is sensed by the sensor, the motor with a four-station turntable rotates 90 degrees and rotates at equal angles in turn until the U-shaped connecting rod is sent At the reclaiming station, it is used for reclaiming by the handling mechanism, and so on. The three-axis module and the handling mechanism is that when the U-shaped connecting rod reaches the material waiting position of the distributing mechanism, the material sensor feedbacks the signal to the controller, and the controller controls the three-axis and its U-shaped connecting rod handling mechanism to pick up the material. Material, clamp the U-shaped connecting rod in turn, until the three clamping jaws on the conveying mechanism have the material.