Nylon photoelectric butterfly-shaped cable and manufacturing method thereof

Abstract

The invention discloses a nylon photoelectric butterfly-shaped cable and a manufacturing method thereof. The cable comprises optical fibers, two copper stranded wires are symmetrically arrayed on the two sides of each optical fiber in parallel, an integrated type inner protective jacket layer is arranged outside the optical fibers and the copper stranded wires, the inner protective jacket layer is covered with an outer protective jacket layer, a molding sleeve is arranged on outer layers of the optical fibers, the molding sleeve is arranged outside the optical fibers in a sleeved mode, and certain gaps exist between the molding sleeve and outer diameters of the optical fibers. The method includes the steps of covering inner cores of the optical fibers with nylon layers to form optical fiber units, enabling at least one optical fiber unit to be lapped and stranded with an aramid fiber layer, then, extruding a PVC high-temperature resistance protective jacket, enabling the manufactured optical fibers to be sleeved with a stainless steel metal hose, then, enabling the manufactured optical fibers to be sleeved with the molding sleeve through a tube extruding structure, wherein six water blocking yarn bodies are vertically placed in inner hole walls of the molding sleeve in advance, and finally adopting double-handpiece extruding technology to sequentially extrude the high-temperature resistance PVC inner protective jacket layer and the nylon outer protective jacket layer,. The bending radius of the nylon photoelectric butterfly-shaped cable is smaller than 7.5mm, production efficiency is improved, and heat deformation resistance, flame retardance and water blocking performance are improved.

Description

[0001] technical field [0002] The invention relates to the fusion field of cables and optical cables, in particular to a nylon photoelectric butterfly cable and a manufacturing method thereof. Background technique [0003] The integration of three networks is not simply the physical integration of the three major networks of telecommunication network, computer network and cable TV network. Its fundamental purpose lies in the integration of high-level business applications. If you consider the types of services you can meet at present: Internet access, multimedia calls, IPTV, etc. all need the support of high-end broadband networks. In the key tasks of triple play determined by the executive meeting of the State Council, it is clearly proposed to "promote fiber-to-the-home in urban areas, expand the coverage of broadband networks in rural areas, and actively promote overall network planning and joint construction and sharing". Accompanied by the implementation of China's b...

AI Technical Summary

Problems solved by technology

[0008] The forming sleeve of this kind of inner hole forming structure makes the optical fiber not directly contact with the sheath material, and the optical fiber can have a proper amount of axial sliding in the forming sleeve. The forming sleeve not only effectively solves the problem of damage to the optical fiber caused by pressure ; At the same time, it avoids the bad phenomenon of zero excess length or even negative excess length and cannot be adjusted caused by extrusion molding

Images