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Metal wire harness-armored lateral pressure resisting micro-cable and manufacturing method thereof

A production method and metal wire technology, applied in the direction of fiber mechanical structure, etc., can solve the problems of low tensile strength, weak resistance to external force and lateral pressure resistance, poor mechanical properties, etc., and achieve the effect of enhanced tensile and lateral pressure resistance.

Inactive Publication Date: 2011-05-11
JIANGSU TONGNENG INFORMATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the disadvantages of existing conventional micro-cables, such as poor mechanical properties, low tensile strength, and weak resistance to external forces, especially lateral pressure resistance, the present invention provides a metal wire harness armored micro-cable with lateral pressure resistance and a manufacturing method thereof. The cable diameter is small, the tensile strength and lateral pressure resistance are significantly enhanced, and its safety and reliability are improved.

Method used

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  • Metal wire harness-armored lateral pressure resisting micro-cable and manufacturing method thereof
  • Metal wire harness-armored lateral pressure resisting micro-cable and manufacturing method thereof

Examples

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Embodiment 1

[0023] Embodiment 1. A side pressure resistant microcable with metal harness armor and its manufacturing method. In this embodiment, refer to the attached figure 1 , Optical fiber 1 is a primary coated optical fiber with 12 core loose fibers. The small diameter metal round single wire adopts a 0.35 mm diameter galvanized steel wire, which is twisted into a metal wire bundle 4 with 7 strands of steel wire, and then the 6 strands of the metal wire bundle are twisted under the control of the mold 4 Then twist into a hollow armored cavity. While twisting the cavity, simultaneously insert 12-core primary coated optical fiber 1 and fill with water blocking compound 2, and finally tighten the outer side of the 6-strand metal wire bundle 4 The outer edge of the armored cavity with the metal wire bundle 4 is extruded with a polyethylene outer sheath 5, and the total outer diameter of the microcable is 4.86 mm. Good tensile and lateral pressure resistance.

Embodiment 2

[0024] Embodiment 2. A side pressure resistant microcable with metal wire harness armor and its manufacturing method see attached figure 1 In this embodiment, the optical fiber 1 adopts a 48-core tightly-packed optical fiber loose fiber, and uses 7 strands of 0.30 mm diameter high tensile copper alloy wire to twist into a metal wire bundle 4, and then the above-mentioned 6 strands of metal wire bundle 4 are twisted again under the control of the mold Synthesize a hollow armored cavity, and simultaneously place 48-core tightly-wrapped fiber loose fibers 1 and fill with water blocking compound 2 at the same time, and finally extrude a polyurethane outer sheath layer 5 outside the armored cavity formed by the metal wire bundle 4. The final total outer diameter of the microcable is 6.35 mm. Excellent tensile and lateral pressure resistance.

Embodiment 3

[0025] Embodiment 3, a metal wire harness armored anti-side pressure micro-cable and its manufacturing method see attached figure 1 In this embodiment, the optical fiber 1 uses a 144-core ribbon fiber, and the metal round single wire is a stainless steel wire with a diameter of 0.26 mm. 7 strands of this stainless steel wire are twisted into a metal wire bundle 4, and then the above-mentioned 8 strands of the metal wire bundle 4 is twisted under the control of a mold A hollow armored cavity is synthesized, and 144-core tape fibers 1 are simultaneously inserted and filled with water blocking compound 2 at the same time. Finally, a fluorinated resin outer protective layer 5 is extruded on the outer side of the armored cavity composed of metal wire bundles 4. The final outer diameter of the micro-cable is 7.83 mm, and its tensile and lateral pressure resistance properties are very ideal.

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Abstract

The invention relates to a metal wire harness-armored lateral pressure resisting micro-cable and a manufacturing method thereof. The method is characterized by comprising the following steps of: twisting multi-strand small-diameter metal round single wires into a metal wire harness; twisting the multi-strand metal wire harness into a hollow polygonal armored cavity of which the cross section is in an inward bent arc shape under the control of a die; synchronously embedding an optical fiber while the armored cavity is formed, and filling a water-resistant compound; and forming an outer sheath layer on the outer side of the armored cavity through extrusion. The external diameter of the micro-cable is between 4 and 9mm, and the tensile and lateral pressure resisting mechanical properties of the micro-cable are obviously enhanced, so that the optical communication of the micro-cable can be safely and reliably operated in severe environments such as a sewer, a pavement micro-groove, underwater, sea bottom and the like.

Description

Technical field [0001] The invention relates to a communication optical cable, in particular to a lateral pressure resistant micro cable armored by a metal wire harness and a manufacturing method thereof. Background technique [0002] With the large-scale construction of 3G networks and the development of fiber-to-building, fiber-to-home, and fiber-to-desktop technologies, communication routing and pipe network resources are becoming increasingly scarce. Traditional conventional optical cables can no longer meet the requirements of the optical transmission era, and optical transmission is urgently needed. Miniaturization and miniaturization of optical cables, such as micro-cables for air-blowing installation and water flow installation, micro-cables installed in sewer pipes and micro-channels on roads, and micro-cables used in underwater and marine applications. The existing 12-144 core conventional The outer diameter of the optical cable is mostly 11-18 mm, and the diameter of t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B6/44
Inventor 黄俊华徐军丁国锋
Owner JIANGSU TONGNENG INFORMATION
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