Diameter-variable mold for winding large-diameter glass fiber reinforced plastics

The utility model discloses a variable-diameter die for winding large-diameter glass fiber reinforced plastic, which belongs to the technical field of glass fiber reinforced plastic product manufacturing, and adopts the technical scheme that the variable-diameter die comprises a rotating shaft, and a plurality of adjustable brackets extending outwards along the radial direction of the rotating shaft are mounted on the side wall of the rotating shaft in an annular array manner; the adjustable support comprises a fixed rod directly connected to the rotating shaft and a movable rod installed on the fixed rod in a telescopic adjusting mode, the fixed rod and the movable rod are provided with a first strip-shaped opening and a second strip-shaped opening respectively, the first strip-shaped opening and the second strip-shaped opening are staggered, and at least one first fixing piece is arranged at the staggered position of the first strip-shaped opening and the second strip-shaped opening. A notch is formed in th