Six-freedom-degree movable welding robot

The invention discloses a six-freedom-degree movable welding robot. One end of a stand column is connected with a vehicle body; the other end of the stand column is respectively connected with one end of a main arm and a first connection end of a first rocker arm; a second connection end of the first rocker arm is connected with one end of a first connection rod; the other end of the first connection rod is connected with a second connection end of a second rocker arm; a first connection end of the second rocker arm is connected with the other end of the main arm; a third connection end of the second rocker arm is connected with one end of a second connection rod; the other end of the second connection rod is connected with a third connection end of the first rocker arm; one end of a third connection rod is connected with a fourth connection end of the second rocker arm; the other end of the third connection rod is connected with one end of a fourth connection rod; the other end of the fourth connection rod is connected with a tail end welding actuator; one end of a connection block is connected with the stand column through a fixed pair; the other end of the connection block is connected with a fifth connection rod; the other end of the fifth connection rod is connected with one end of a sixth connection rod; the other end of the sixth connection rod is connected with the other arm of the main arm. The six-freedom-degree movable welding robot has the advantages of large working space, high rigidity, high bearing capability and high execution accuracy.