Coaxial cable production method introducing random quantity, coaxial cable and device

The invention discloses a random quantity introduced coaxial cable production method, a coaxial cable and a device. According to the method, an independent foaming insulation layer production line is adopted to extrude and form a foaming insulation layer outside an inner conductor, and after the inner conductor with the foaming insulation layer is taken up, an outer conductor is longitudinally wrapped and an outer sheath is extruded to form a coaxial cable; the foaming insulation layer production line has independent inner conductor traction power from paying off of an inner conductor and from taking up of the inner conductor after an insulation foaming layer is formed on the outer side of the inner conductor, and production line speed segmentation control is carried out, so that the production line in the current time period is adjusted to the set randomly-generated production line speed in the time period in real time. According to the invention, on an independent foaming insulation layer production line, w