Automatic welding device for annular symmetrical fillet welds

Abstract

The invention relates to an automatic welding device for annular symmetrical fillet welds. The automatic welding device comprises a supporting device, a fixed connection arm and a horizontal slide rail, wherein the fixed connection arm is fixedly connected with the horizontal slide rail in a vertical cross manner, one side of the fixed connection arm is fixed on the supporting device, and the other side of the fixed connection arm is provided with a rotatable guide wheel; the horizontal slide rail is provided with two welding gun positioning devices which can move along the horizontal slide rail, and the two welding gun positioning devices are symmetrically arranged by taking the fixed connection arm as a center; each welding gun positioning device comprises a vertical coarse adjuster, a horizontal fine adjuster, a vertical fine adjuster, a left-and-right rotator and a back-and-forth rotator; and the back-and-forth rotators are provided with two welding gun heads. According to the automatic welding device for the annular symmetrical fillet welds, the two welding gun positioning devices are adopted to be symmetrically arranged, so that the two welding gun heads can simultaneously weld on both sides, the welding stress can be offset, and the welding deformation is prevented; and meanwhile, the manual welding of the fillet welds is replaced by the automatic welding device disclosed by the invention, so that the production efficiency is increased, the labor intensity and manufacturing cost are lowered, and meanwhile, the welding quality of the fillet welds is improved.

Description

technical field [0001] The invention relates to a special welding device in the field of petrochemical equipment, in particular to an automatic welding device for circular symmetrical fillet welds. Background technique [0002] The polyethylene loop reactor has a long straight pipe section, usually about 60 meters, and there are many welds between the bushing and the supporting ring plate on the straight pipe section. The welding process in the prior art is: use the bushing Combine with the supporting ring plate to ensure that the supporting ring plate is relatively parallel. After positioning welding, the welder will perform manual CO2 welding. This welding process is completely manually welded by multiple welders at the same time. , Turn the tire at an angle through the support under the ring pipe, and then weld a certain length. [0003] The above-mentioned welding process requires several welders to operate synchronously, which not only has a long construction period, i...

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Problems solved by technology

[0003] The above-mentioned welding process requires several welders to operate synchronously, which not only has a long construction period, is not easy to coordinate, and has a huge workload; Therefore, the supporting ring plate is not only easy to deform, but the welding quality is not ideal, and the appearance of the hand-welded fillet weld is not beautiful, and it needs to be repaired after welding, which increases the workload

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