The present invention comprises: a main body (1); an axis 1 driving unit (10) installed on one side of the main body to be rotatable around a vertical axis; an axis 2 driving unit (20) installed at one end of the axis 1 driving unit (20) to be rotatable around a first horizontal axis; an axis 3 driving unit (30) installed at one end of the axis 2 driving unit (20) to to be rotatable around the first horizontal axis; an axis 4 driving unit (40) installed at one end of the axis 3 driving unit (30) to be rotatable around a second horizontal axis; and an axis 5 driving unit (50) installed at one end of the axis 4 driving unit (40) to be rotatable around a second horizontal axis. Accordingly, there is an effect where one operator can contribute to the improvement of productivity by enhancing the convenience to perform welding while transporting the robot in an area with a narrow operating space such as a double hull block of a vessel.
