Welding device capable of being adjusted in large range and used for automobile machining

The utility model discloses a wide-range adjustable welding device for automobile processing, which comprises a base, the top end of the base is fixedly connected with a support frame, the top end of the base is provided with a workbench, and four corners between the base and the workbench are respectively and fixedly connected with a support block. According to the welding device capable of being adjusted in the large range and used for automobile machining, by arranging a protective shell, a limiting groove, an adjusting rod, a first servo motor, a supporting plate and an adjusting sleeve, when the position of a welding head needs to be adjusted, the first servo motor at the top end of the supporting plate is started, and the first servo motor drives the adjusting rod to rotate so that the adjusting sleeve can move left and right outside the adjusting rod; the position of the welding head can be adjusted by moving the adjusting sleeve left and right, the limiting groove can limit the adjusting sleeve to pre