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    • 8. 发明授权
    • Process and apparatus for fabricating optical fiber cables
    • 制造光纤电缆的工艺和装置
    • US4711388A
    • 1987-12-08
    • US736169
    • 1985-05-20
    • Joseph WinterMichael J. Pryor
    • Joseph WinterMichael J. Pryor
    • B23K1/16G02B6/44H01B13/26H04B9/00
    • B23K1/16G02B6/443G02B6/4488H01B13/2613
    • A process and apparatus for fabricating an optical fiber communication cable are described herein. The optical fiber cable has a cable core including a metal containment tube and at least one optical fiber within the tube. The containment tube preferably is formed by drawing a strip of metal through at least one forming die. In a first aspect of the present invention, smooth operation of the forming die is promoted by first passing the metal strip through a shaving die to remove any shearing burrs along the strip edges and to maintain the width of the strip within a desired tolerance.In a second aspect of the present invention, various approaches for effectively sealing the containment tube are described. In a first embodiment, the tube is sealed using a wave soldering approach wherein a flow of moving molten solder is used to substantially fill a seam in the tube. In a preferred embodiment, a mechanical separation is placed between the tube and the moving molten solder to prevent sealing until a steady state running condition has been achieved. In a second embodiment, the tube is sealed by wrapping a metal foil having a meltable coating about the tube and heating the assembly to melt the coating and effect a seal.In a third aspect of the present invention, the optical fiber cable is provided with an improved concentricity. The improved concentricity is effected by passing the sealed metal tube through a die for removing any excess material such as solder from about the outer periphery of the tube.
    • 本文描述了用于制造光纤通信电缆的工艺和设备。 光纤电缆具有包括金属容纳管和管内的至少一根光纤的电缆芯。 容纳管优选地通过至少一个成形模拉出金属条形成。 在本发明的第一方面,通过首先使金属带通过剃须刀模以除去沿着带材边缘的任何剪切毛刺并且将条带的宽度保持在所需公差内,促进成形模具的平滑操作。 在本发明的第二方面中,描述了用于有效密封容纳管的各种方法。 在第一实施例中,使用波峰焊接方法密封管,其中使用移动的熔融焊料的流动来基本上填充管中的接缝。 在优选实施例中,在管和移动的熔融焊料之间放置机械分离以防止密封直到达到稳态运行状态。 在第二实施例中,通过将具有可熔融涂层的金属箔缠绕在管周围并加热组件以熔化涂层并实现密封来密封管。 在本发明的第三方面中,光缆具有改善的同心度。 改进的同心度是通过将密封的金属管通过模具来实现的,用于从管的外周围除去诸如焊料的多余材料。