Welding device and welding method

The invention relates to the technical field of welding equipment, and provides a welding device and a welding method. Comprising a welding gun, a bottom plate, a to-be-welded position, a supporting table and a first pressing assembly, wherein the to-be-welded position is located above the bottom plate and used for placing a to-be-welded object for welding; the supporting table is arranged on the bottom plate and used for supporting the bottom of the to-be-welded object at the to-be-welded position; the first pressing assembly is used for pressing the to-be-welded object on one side of the supporting table downwards; the second pressing assembly is used for pressing the to-be-welded object on the other side of the supporting table downwards, the air hole is formed in the bottom plate and located below the to-be-welded position, and the first air source is communicated with the air hole and supplies shielding gas. 本发明涉及焊接设备的技术领域，提供了一种焊接装置和焊接方法，包括：焊枪、底板、位于所述底板上方并用于供待焊接物放置以进行焊接的待焊接位、设置在所述底板上并用于支撑所述待焊接位处所述待焊接物底部的