The invention relates to the technical field of welding production lines, in particular to a robot intelligent welding production line. The robot intelligent welding production line comprises a mounting box, a movable plate, a supporting plate, a connecting rod, a knocking head, a contact roller, a drive motor, a cam, a reset spring, dustproof clustered hair, a ball nut, a ball screw, a drive motor, a chip removal hopper, a rotary motor and a clamp. The movable plate is located in the mounting box, the middle position of the left side of the top of the movable plate is fixedly connected with the bottom of the supporting plate, the left end of the connecting rod is fixedly connected with the top of the right side of the knocking head, and the right end of the connecting rod stretches into the mounting box. The purpose that welding slag at the welding position is knocked away through the knocking head is achieved, thus, a manual removing manner is replaced, the whole process and automatic welding supplement each other, a manual participation working manner is reduced, the whole welding line achieves an autonomous effect, then the labor intensity is reduced, and the welding rate is increased.