Fixing mechanism and stranding machine stranding disc

The invention provides a fixing mechanism and a stranding disc of a stranding machine, and belongs to the technical field of stranding machines. The fixing mechanism comprises a mounting assembly and a tension assembly. The mounting assembly comprises a frame, a steering part, a core expanding part and a clamping and rotating part, the steering part is rotationally connected with the frame, one end of the core expanding part is arranged on the steering part, the clamping and rotating part is arranged on the frame and movably connected with the other end of the core expanding part, a bobbin is movably expanded on the core expanding part, and the clamping and rotating part is arranged on the frame and movably connected with the other end of the core expanding part. The tension assembly comprises a pulley block and a friction piece, and the pulley block is arranged on the frame. In the application, the mounting assembly utilizes the deflection of the core expansion piece to enable one end of the core expansion p