A multi-component glass fiber thermal fusion bundling device

By using a multi-component glass fiber thermal fusion bundling device, and through the combination of a tube furnace mechanism, a tube furnace temperature control, and a vacuum pump, precise control of temperature and pressure is achieved, solving the problems of low optical transmittance and mechanical strength in existing technologies, and improving the long-term reliability of glass fiber.

CN224436632UActive Publication Date: 2026-06-30NANJING KAIFA PHOTOELECTRIC TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
NANJING KAIFA PHOTOELECTRIC TECH CO LTD
Filing Date
2025-09-16
Publication Date
2026-06-30

AI Technical Summary

Technical Problem

In existing multi-component glass fiber thermal fusion bonding technology, the lack of overall control over temperature and pressure results in low optical transmittance and mechanical strength after the bundle, affecting long-term reliability.

Method used

A multi-component glass fiber thermal fusion bonding device is employed, comprising a carrier plate, fiber fusion splicing fixture, tube furnace mechanism, vacuum pump, sealing device, tube furnace temperature control, sealing device, tube furnace temperature control, tube furnace temperature control, sealing plug, tube furnace temperature control, tube furnace temperature control, and sealing plug. A negative pressure environment is created by the vacuum pump, and combined with the heating wire output end and thermocouple support, precise control of temperature and pressure is achieved, promoting molecular diffusion and interface fusion between the optical fiber and the glass tube.

Benefits of technology

It improves optical transmittance and mechanical strength, increases the long-term reliability of glass optical fiber, adapts to the differences in characteristics of optical fibers with different components, and achieves high-quality thermal fusion bonding effect.

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Abstract

This utility model discloses a multi-component glass fiber thermal fusion bonding device, relating to the field of optical fiber manufacturing technology. It includes a carrier plate, an optical fiber splicing fixture, and a tubular furnace mechanism. The tubular furnace mechanism includes a furnace body, a cavity, a vacuum pump, a sealing insert, and a tubular furnace temperature control. The furnace body is equipped with a heating wire output end and has a cavity. The optical fiber splicing fixture is located above the furnace body. The vacuum pump is located on one side of the furnace body, and a tubular furnace temperature control is located at one end of the furnace body. This utility model allows the furnace body to operate under negative pressure and temperature control by the tubular furnace temperature control box. Simultaneously, the furnace body removes air from the furnace while the glass tube softens during the heating process, promoting molecular diffusion between the optical fiber and the glass tube. This improves the interface fusion quality between the optical fiber and the glass tube, reduces the bubble residue rate, and thus increases the optical transmittance and mechanical strength of the glass fiber after thermal fusion bonding, enhancing the long-term reliability of the glass fiber.
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