Article transportation line changing device

The utility model discloses an article transportation line changing device which comprises two line changing units arranged at the joint of an upper conveying belt and two lower conveying belts. The lower conveying belts are located on the two sides of the output end of the upper conveying belt correspondingly. The line changing units are arranged on the two sides of the output end of the upper conveying belt correspondingly. The wire changing unit comprises a supporting seat, a guide plate, a mounting frame and a driving cylinder; the mounting frame is arranged at the upper end of the supporting seat close to the feeding side; the driving cylinder is arranged at the upper end of the supporting seat close to the discharging side; the guide plate is located above the upper conveying belt or the lower conveying belt, and one end of the guide plate is hinged to the mounting frame; the driving air cylinder is hinged to the supporting base, and a telescopic rod of the driving air cylinder is hinged to the guide pl