Bumper welding positioner

The invention discloses a bumper welding positioner, comprising a frame. The frame comprises two mounting bases; clamps are arranged on the mounting bases; an overturning table is erected between thetwo mounting bases; a rotating mechanism is arranged on the mounting bases; the overturning table is driven by the rotating mechanism to rotate; the rotating mechanism comprises a rotating motor; eachclamp comprises a clamping disc; three guide rails are laid on the front surface of each clamping disc; each guide rail is slidably connected with a clamping block; a threaded shaft is fixed to the center of each clamping disc; the threaded shafts are located on the back surfaces of the clamping discs; the threaded shafts are perpendicular to the clamping discs; one ends of the threaded shafts are fixed to the clamping discs, and the other ends are inserted into a bearing; a center shaft is further fixed to each clamping disc; the three guide rails are arranged around the center shaft; and aworkpiece to be welded is s