Device for welding bolts for fixing compressor on base board of air conditioning outer machine

A device for welding bolts for fixing a compressor on a base board of an air conditioning outer machine comprises a rack table panel, wherein a sliding table is arranged on guide rails of the table panel and can slide and move under the control of a cylinder, the sliding table, an insulating board and an electrically conductive base are fixedly connected, a bottom electrode is fixedly arranged on the electrically conductive base, a bolt hole is formed in the bottom electrode, an insulating bushing is arranged in the hole, a vertical shift cylinder is fixedly arranged above the bottom electrode, a piston rod of the vertical shift cylinder is fixedly connected with an insulating block, the insulating block is fixedly connected with a top electrode, the top electrode is electrically connected with an output end of a welding transformer by a wire, an electrically conductive shift cylinder is fixedly arranged on one side of the electrically conductive base, a piston rod of the electrically conductive shift cylinde