Automatic welding device for net rack support

The utility model discloses a net rack support automatic welding device which comprises two baffles, the top of one baffle is provided with a movable groove in a penetrating mode in the front-back direction, a supporting device is arranged in the movable groove, the bottom of the baffle is fixedly connected with a first supporting leg, two crosspieces are fixedly connected between the two baffles, and the two crosspieces are fixedly connected with the first supporting leg. Sliding grooves are formed in the opposite sides of the two baffles, a same connecting plate is connected between the two sliding grooves in a sliding mode, and fixing plates are fixedly connected to the top of the connecting plate and the top of one crosspiece. Due to the fact that the conical rollers are arranged, in the welding process, one end of a steel pipe is connected to the conical roller connected with the crosspiece in a sleeved mode, then the other conical roller is gradually inserted into the steel pipe under the action of the