Drum-type right-angle turning machine convenient for speed regulation

The invention discloses a drum-type right-angle turning machine convenient for speed regulation. The drum-type right-angle turning machine comprises a first conveying unit and a second conveying unit, a plurality of rollers are arranged on the first conveying unit, each roller is rotationally arranged on a positioning frame, the length of each roller is gradually shortened from front to back, the positioning frame is in sliding connection with the first rack through a jacking guide unit, the jacking guide unit is used for driving the positioning frame to move up and down, and the positioning frame is arranged on a bottom plate; a plurality of brake wheels are arranged at the lower end of the bottom plate; the second conveying unit and the first conveying unit are the same in structure and are used in cooperation. According to the invention, the downtime can be shortened, the situation that the transmission efficiency is influenced by long-time downtime during maintenance is effectively avoided, and meanwhile,