Tyre two section shaping machine tyre barrel centering device

The utility model relates to an automatically righting device for tyre barrels of tyre of two section shaping machines, which relates to rubber machinery. The tyre two section shaping machine is provided with a cylinder, a piston rod of the cylinder is provided with a tyre barrel stretching fixing disk and a tyre barrel stretching movable disk, a moveable holder is arranged under the tyre barrel stretching fixing disk and the tyre barrel stretching movable disk, one side of the moveable holder is provided with another cylinder which is fixed to the shaping machine, and the moveable holder is provided with one cylinder; the upper end of the piston rod of the cylinder on the moveable holder is provided with an arc-shaped cloth bag. After the tyre barrel is sheathed on the tyre barrel stretching fixing disk and the tyre barrel stretching movable disk, the tyre barrel stretching movable disk stretches the tyre barrel toward the left, and the moves holder is moved just under the tyre barrel and lifts the arc-shaped cloth bag to right the tyre barrel. The tyre barrel do not need to be rotated and can be righted. The utility model has the advantages of short operating time, high work efficiency, and high automation level.