Production technology of all dielectric layer twisted nonmetallic optical cable

A production process and layer-twisting technology, which is applied in the field of production technology of all-dielectric layer-twisted non-metallic optical cables, can solve the problem that the number of all-dielectric cores cannot meet the requirements of use, such as the extrusion tension of figure-8 optical cables, and can increase the pressure. , the extrusion flow is uniform, the effect of increasing resistance and back pressure

Active Publication Date: 2017-07-07
成都亨通光通信有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It solves the problem that the number of traditional all-dielectric cores cannot meet the requirements of use and the extrusion tension of 8-shaped optical cables

Method used

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  • Production technology of all dielectric layer twisted nonmetallic optical cable

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Comparison scheme
Effect test

Embodiment 1

[0025] A production process for an all-dielectric layer stranded non-metallic optical cable, comprising:

[0026] (1) Material transmission: the cable core 3 coils and the FRP reinforcement 1 coil are transmitted through the fixed pulley, and the tension ratio of the cable core 3 coils and the FRP reinforcement 1 coil is 1.2:1;

[0027] (2) Guide mold positioning: cable core 3 and FRP reinforcement 1 are on the same vertical plane and kept parallel;

[0028] (3) Extrusion of polyethylene sheath 2: the temperature of each part of the extruder is higher than the melting point of the polyethylene material at 215°C, and the cable core 3 and FRP reinforcement 1 are formed in the extruder in a relatively tension-free state. There are double-layer filter screens in the neck of the molding machine;

[0029] (4) Cable cooling: the cooling water tank is divided into three sections for cooling, the temperatures of the first cooling, the second cooling and the third cooling are 44°C, 34°...

Embodiment 2

[0043] A production process for an all-dielectric layer stranded non-metallic optical cable, comprising:

[0044] (1) Material transmission: the cable core 3 coils and the FRP reinforcement 1 coil are transmitted through fixed pulleys, and the tension ratio of the cable core 3 coils to the FRP reinforcement 1 coil is 1.3:1;

[0045] (2) Guide mold positioning: cable core 3 and FRP reinforcement 1 are on the same vertical plane and kept parallel;

[0046] (3) Polyethylene sheath 2 extrusion: The temperature of each part of the extruder is higher than the melting point of polyethylene material at 215°C, and the cable core and FRP reinforcement are formed in the extruder in a relatively tension-free state. There are double-layer filters in the machine neck;

[0047] (4) Cable cooling: the cooling water tank is divided into three sections for cooling, the temperatures of the first cooling, the second cooling and the third cooling are 46°C, 36°C and 29°C respectively;

[0048] (5...

Embodiment 3

[0061] A production process for an all-dielectric layer stranded non-metallic optical cable, comprising:

[0062] (1) Material transmission: the cable core 3 coils and the FRP reinforcement 1 coil are transmitted through the fixed pulley, and the tension ratio of the cable core 3 coils and the FRP reinforcement 1 coil is 1.2:1;

[0063] (2) Guide mold positioning: cable core 3 and FRP reinforcement 1 are on the same vertical plane and kept parallel;

[0064] (3) Polyethylene sheath 2 extrusion: The temperature of each part of the extruder is higher than the melting point of polyethylene material at 215°C, and the cable core and FRP reinforcement are formed in the extruder in a relatively tension-free state. There are double-layer filters in the machine neck;

[0065] (4) Cable cooling: the cooling water tank is divided into three sections for cooling, the temperatures of the first cooling, the second cooling and the third cooling are 45°C, 35°C and 28°C respectively;

[0066...

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Abstract

The invention relates to a production technology of an all dielectric layer twisted nonmetallic optical cable. The production technology comprises the steps of material transmission, guide mould positioning, polyethylene material extrusion, cable cooling and product formation and wire retreating. As for a cable core and an FRP reinforcing member, a suspension wire applies laying tension to the FRP reinforcing member through guide mould positioning so that the cable core and the FRP reinforcing member are enabled to be formed in an extruding machine in the relatively tension-free state, the FRP reinforcing member and the optical cable are ensured to be parallel after cooling and the finally produced eight-shaped cable can maintain the flat and unbending state under the condition of natural release. When the produced optical cable is stretched, the situation that the optical cable part is firstly affected by the stress caused by natural bending of the optical cable does not occur, and the suspension wire of the optical cable is firstly affected by the stress so that the problem of optical cable stretching can be solved. Logistics resistance and counterpressure can be increased by using two layers of filter screens so that nylon plasticizing is enabled to be more uniform. The production technology has the advantages of being safe, low in cost and high in tensile strength and can guarantee the geometric structure and intensity of eight-shaped extrusion.

Description

technical field [0001] The invention relates to the technical field of optical cable manufacturing, in particular to a production process of an all-dielectric layer stranded non-metallic optical cable. Background technique [0002] With the continuous development of optical network technology, it has become an irreversible trend to implement optical input and copper output at the communication network access level. Due to the particularity of the laying environment, optical cables for access networks are required to have high safety, simplicity, large number of cores, and can be used in special environments. In the traditional layer twisted figure-eight optical cable, there are generally metal materials in the optical cable. Due to poor grounding, incidents of lightning damage to communication equipment due to the introduction of the optical cable occur from time to time. In addition, the traditional central beam tube type figure-eight optical cable, although It is also all...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B6/44
CPCG02B6/4479G02B6/4486
Inventor 李涛王耀明刘杰雷果邓平杨家权
Owner 成都亨通光通信有限公司
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