Switching type welding clamp convenient to position

The invention discloses a switching type welding fixture convenient to position. The switching type welding fixture comprises a base, and a part for placing a workpiece to be welded is a placing groove in a table top. The clamping device comprises a top clamping device, a side edge clamping device, a front face clamping device and an auxiliary clamping device. According to the top clamping device, a rotating rod is manually rotated, so that a C-shaped frame on the surface of the rotating rod rotates anticlockwise. The C-shaped frame can lift a hinge on the surface of the hinge seat upwards in the anticlockwise rotation process; the hinge realizes the swing of the swing rod through the second hinge seat; the swing rod is limited by the rotating shaft on the bearing seat in the swing process, and only can achieve the self-rotating effect. The swing rod can press the rubber head on the end face of the panel downwards in the rotating process, and the rubber head is extruded on the surface of the workpiece. And th