Gas treatment device for producing optical fiber protection empty pipe and die assembly

Abstract

The invention relates to a gas treatment device for producing an optical fiber protection empty pipe, and belongs to the field of optical cables. The device comprises a pressure regulating valve, a first gas storing tank, a second gas storing tank, a first precision filter, a second precision filter, a precision pressure regulating valve and a precision flowmeter, wherein a gas inlet of the pressure regulating valve is connected with a gas feeding pipe while a gas outlet of the pressure regulating valve is connected with the gas inlet of the first gas storing tank; the gas outlet of the first gas storing tank is connected with the gas inlet of the second gas storing tank; the gas outlet of the second gas storing tank is connected with a gas feeding end of the first precision filter; a gas discharging end of the first precision filter is connected with the gas feeding end of the second precision filter; the gas discharging end of the second precision filter is connected with the gas feeding end of the precision pressure regulating valve; the gas discharging end of the precision pressure regulating valve is connected with the gas inlet of the precision flowmeter, and the gas outlet of the precision flowmeter is connected with a gas discharging pipe. The invention further discloses a die assembly. The gas treatment device for producing the optical fiber protection empty pipe has the main beneficial effects that the equipment is simple, the production is easy, the use is easy, the cost is low, and the produced finished product of the optical fiber protection empty pipe is high in percent of pass, stable and reliable in quality, and low in cost.

Description

[0001] This application is a divisional application of an invention patent with an application date of April 3, 2014, titled: Manufacturing method for optical fiber protection air tube, and application number: 201410132890.1. technical field [0002] The invention belongs to the technical field of electric wires and cables, and in particular relates to a method for manufacturing an optical fiber protective tube. Background technique [0003] With the rapid development of the communication industry, the demand for optical fiber is increasing day by day. Since the main component of optical fiber is high-purity silica, and silica is the main component of soil, optical fiber has more resources than metal materials. Rich. On the other hand, optical fiber does not contain metal elements, light weight, small transmission loss, long transmission distance, no electromagnetic interference, etc. Therefore, in the field of signal transmission, "light into copper back" has become a devel...

AI Technical Summary

Problems solved by technology

When used indoors, indoor optical cables are usually used for connection. However, sometimes the length of existing optical cables often does not meet the requirements of use. To achieve the required connection, since the bare fiber or colored fiber is relatively fragile, it is easy to break without protection, so for the protection of the fiber, the connection in this case, the fiber protection empty tube is extremely important

The diameter of bare fiber or colored fiber generally does not exceed 260μm, and the diameter of the fiber protection tube allowed by the fiber optic connector is generally Φ900±50μm. Therefore, the inner diameter of the fiber protection tube is generally between Φ400±50μm. For such a thin inner diameter , more sophisticated equipment or more advanced technology and molds are required for manufacturing. Nevertheless, the pass rate of the manufacture of optical fiber protection empty tubes at home and abroad is low, so the price of optical fiber protection empty tubes is at a high level

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