Clamping mechanism and cutting device

The utility model relates to the technical field of wire processing, in particular to a clamping mechanism and a cutting device, which comprise a fixing component, a positioning cylinder, a conical surface arranged at one end of the positioning cylinder, a shaft shoulder fixedly connected to the outer side of the positioning cylinder, and a driving component adaptively mounted on the outer side of the positioning cylinder, a slotted hole is formed in the outer side of the positioning cylinder, a driven assembly is adaptively mounted in the slotted hole, and a self-locking assembly is adaptively mounted on the outer side of the positioning cylinder; according to the utility model, through mutual cooperation among the positioning cylinder, the driving assembly and the driven assembly, when a wire needs to be inserted, a driving disc is rotated, a positioning column slides outwards, a worker inserts the wire, when the wire is clamped, the driving disc is rotated reversely, the positioning column slides inwards,