The invention provides a
welding wire buffer device. The
welding wire buffer device is arranged between a first wire feeding part and a second wire feeding part. The first wire feeding part conveys awelding wire to the buffer device, and the second wire feeding part conveys the
welding wire to a neck part of a welding gun for welding. One end of an inner wire feeding
pipe is fixedly connected with the first wire feeding part, and the other end of the inner wire feeding
pipe is a free end and moves along with the welding wire in the axial direction to achieve a buffering function. According tothe welding wire buffer device, a buffer space is provided for the welding wire, the probability that the welding wire gets stuck due to a large curvature, caused by a large back-pulling quantity ofthe welding wire, of a wire feeding
pipe is lowered, protection pipes with small diameters reduce the weight of the wire feeding pipe, and the gravity of the welding wire and the inner and outer protection pipes of the welding wire is further reduced, so that the
friction force between the welding wire and the inner and outer protection pipes is reduced, and the precision of the welding wire buffer device is improved. According to a welding
robot and welding
system using the welding wire buffer device, the structure of a welding device is simplified, the manufacturing cost is reduced, the
production cycle is shortened, and the economical performance and practicability of the welding
robot and the welding
system of the welding
robot are improved.