WO2018133477A1 - 一种扎纱遇热自动链解型光缆的制造方法 - Google Patents

一种扎纱遇热自动链解型光缆的制造方法 Download PDF

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WO2018133477A1
WO2018133477A1 PCT/CN2017/107936 CN2017107936W WO2018133477A1 WO 2018133477 A1 WO2018133477 A1 WO 2018133477A1 CN 2017107936 W CN2017107936 W CN 2017107936W WO 2018133477 A1 WO2018133477 A1 WO 2018133477A1
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cable
layer
optical cable
chain
manufacturing
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French (fr)
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王珑
喻琴
胡国华
祁庆庆
陈黎明
付凯
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Fiberhome Telecommunication Technologies Co Ltd
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Fiberhome Telecommunication Technologies Co Ltd
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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
    • G02B6/4479—Manufacturing methods of optical cables

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  • the present invention relates to the field of optical communication technologies, and in particular, to a method for manufacturing a cable-heating automatic chain-dissolving optical cable.
  • the commonly used optical cable will be bundled with SZ strands in the stranding process to form a cable core outside the loose tube.
  • an outer sheath is extruded.
  • the layers form an optical cable.
  • the disadvantage of the conventional cable structure is that the tying yarn is only used for tying the loose tube in the stranding process. Once the tying yarn is too tightly tied, the loose tube is easily flattened, so that the fiber in the loose tube is attenuated due to being squeezed.
  • the fiber exceeds the standard and the attenuation exceeds the standard, the fiber is wrapped by the outer sheath layer and further tightened and squeezed, so that the fiber cannot be restored or restored to a normal attenuation level, thereby affecting subsequent communication applications.
  • the outer sheath of the optical cable is stripped, the armor layer and the tying yarn are removed, and then the optical fiber is peeled off to perform the line welding.
  • the presence of the skein reduces the efficiency of the cable stripping and the optical fiber fusion, thereby affecting the overall construction. effectiveness.
  • the object of the present invention is to provide a method for manufacturing an automatic chain-dissolving optical cable for tying the yarn, and to improve the disadvantage that the existing optical fiber is attenuated due to the flattening of the loosened sleeve, and Convenient cable stripping and fiber fusion.
  • the technical solution adopted by the present invention is: a method for manufacturing a cable-wound thermal chain-removing optical cable, comprising the following steps:
  • the composite material is a polyolefin or a polyester.
  • step S2 comprises stranding a plurality of filling ropes and a loose tube around the central reinforcing member, and winding the cable strands of the hot chain to form a cable core around all the filling ropes and the loose tube.
  • the loose tube includes 1-12 colored optical fibers.
  • the cable core includes 1-12 loose tubes.
  • the central reinforcement member is a steel wire, a steel wire rope or a fiber reinforced composite material.
  • the fiber reinforced composite material is an aramid fiber reinforced composite material or a glass fiber reinforced composite material.
  • the armor layer is a steel belt spiral armor layer, an aluminum belt spiral armor layer or a stainless steel belt spiral armor layer.
  • the outer sheath layer is a polyethylene layer, a nylon layer, a low-smoke halogen-free layer or a polyurethane layer.
  • the cable core of the wire-spinning automatic chain-dissolving optical cable of the invention is provided with the heat-chain-dissolving tying yarn, and the cable core bundled by the tying yarn is inserted into the outer casing layer of the extruder to form the outer sheath layer.
  • the cable core is covered by an outer sheath to form a fiber optic cable. Since the skein is chain-extracted when the outer sheath layer is extruded, the sleeve that was previously slightly flattened by the skein can automatically restore its original shape and improve the present There is a disadvantage that the fiber is loosened due to the slack of the loose tube and the attenuation is exceeded.
  • FIG. 1 is a schematic flow chart of a method for manufacturing a wire-wrap automatic chain-removing optical cable according to an embodiment of the present invention
  • FIG. 2 is a schematic structural view of an automatic chain-dissolving optical fiber cable in accordance with an embodiment of the present invention (when the yarn is unchained).
  • an embodiment of the present invention provides a method for manufacturing a cable-wound automatic chain-removing optical cable, which includes the following steps:
  • the plurality of loose tubes 5 are stranded around the central reinforcement 4, and the cable 1 is wound around the outer edge of all the loose tubes 5 to form a cable core 1;
  • the fibrous material is a polyolefin or a polyester.
  • the corresponding extrusion temperature is also different, will be higher than 140 ° C.
  • the extrusion temperature is usually 150-160 ° C; when the outer sheath layer 3 is polyethylene (PE), the extrusion temperature is usually about 200 ° C.
  • the extrusion temperature is usually 200 ° C or higher.
  • step S2 comprises stranding a plurality of filling strands 7 and loose tubes 5 around the central reinforcement 4, at all filling ropes 7 and loose tubes 5
  • the outer winding is wound with the heat strand to form the cable core 1.
  • the loose tube 5 includes 1-12 colored fibers.
  • the cable core 1 includes 1-12 loose tubes 5 therein.
  • the central reinforcement 4 is a steel wire, a wire rope or a fiber reinforced composite material.
  • the fiber reinforced composite material is an aramid fiber reinforced composite material or a glass fiber reinforced composite material.
  • the armor layer 2 is a steel strip spiral armor layer 2, an aluminum strip spiral armor layer 2 or a stainless steel belt spiral armor layer 2.
  • the outer sheath layer 3 is a polyethylene layer, a nylon layer, a low-smoke halogen-free layer or a polyurethane layer.
  • S1: 1 ⁇ 12 colored fibers are released from the fiber optic pay-off rack, and the tension of the fiber optic pay-off rack is controlled by a programmable logic controller in the range of 50-160 g to ensure a suitable fiber length.
  • the colored fiber is passed through the extruder head while the secondary coating material is extruded into an extruder to form a loose tube 5.
  • the loose tube 5 is separately cooled by hot water, warm water and cold water, and the outer diameter of the loose tube 5 produced by the infrared caliper is monitored by the infrared caliper; the outer diameter of the loose tube 5 is sprayed by the ink jet printer.
  • the upper coding is convenient for distinguishing and confirming in the subsequent application process, and the loosening sleeve 5 is closed by the wire take-up device. Adjust the take-up tension in the range of 50-160g to ensure the take-up speed, and the loose tube 5 of the stock will not be excessively squeezed.
  • the core 1 is placed on the pay-off frame, the tension of the pay-off frame is set in the range of 50-160 g; the outer layer of the core 1 is covered with the armor layer 2;

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Ropes Or Cables (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

一种扎纱(6)遇热自动链解型光缆的制造方法，涉及光通信技术领域，包括以下步骤：S1，选用在温度120-140℃条件下自动链解的复合材料制成扎纱(6)；S2，在多根着色光纤外通过挤塑机挤塑形成松套管(5)；S3，将多根松套管(5)绞合在中心加强件(4)周围，在所有的松套管(5)外围缠绕遇热自动链解的扎纱(6)形成缆芯(1)；S4，在缆芯(1)外层包覆铠装层(2)；S5，在铠装层(2)外挤塑外护套层(3)，缆芯(1)的扎纱(6)遇热自动链解，形成扎纱(6)遇热自动链解型光缆。由于扎纱(6)在挤塑外护套层(3)时链解，因此之前被扎纱(6)轻微扎扁的套管可自动恢复原来形状，改善现有光纤因松套管被扎纱扎扁而衰减超标的缺点。

Description

一种扎纱遇热自动链解型光缆的制造方法 技术领域
本发明涉及光通信技术领域，具体涉及一种扎纱遇热自动链解型光缆的制造方法。
背景技术
目前常用的光缆在绞合工序时会采用SZ绞合将扎纱捆扎在松套管外部形成缆芯，护套工序时在缆芯外层包裹铠装层后，再挤塑一层外护套层形成光缆。该传统光缆结构的缺点是扎纱仅仅只在绞合工序用于捆扎松套管，扎纱一旦捆扎过紧，容易导致松套管被扎扁，使得松套管内的光纤由于受挤压而衰减超标，衰减超标的光纤被外护套层包裹后进一步收紧挤压，使光纤无法恢复或还原到正常的衰减水平，进而影响后续通讯应用。此外，在光缆线路施工时，需剥开光缆外护套，去除铠装层和扎纱，然后剥离出光纤进行线路熔接，扎纱的存在降低了光缆剥离和光纤熔接的效率，进而影响整体施工效率。
发明内容
针对现有技术中存在的缺陷，本发明的目的在于提供一种扎纱遇热自动链解型光缆的制造方法，改善现有光纤因松套管被扎纱扎扁而衰减超标的缺点，且方便光缆剥离和光纤熔接。
为达到以上目的，本发明采取的技术方案是：一种扎纱遇热自动链解型光缆的制造方法，包括以下步骤：
S1，选用在温度120-140℃条件下自动链解的复合材料制成扎纱；
S2，在多根着色光纤外通过挤塑机挤塑形成松套管；
S3，将多根松套管绞合在中心加强件周围，在所有的松套管外围缠绕遇热自动链解的扎纱形成缆芯；
S4，在缆芯外层包覆铠装层；
S5,在铠装层外挤塑外护套层，缆芯的扎纱遇热自动链解，形成扎纱遇热自动链解型光缆。
在上述技术方案的基础上，所述复合材料为聚烯烃或聚酯。
在上述技术方案的基础上，步骤S2包括将多根填充绳和松套管一起绞合在中心加强件周围，在所有的填充绳和松套管外围缠绕遇热链解的扎纱形成缆芯。
在上述技术方案的基础上，所述松套管内包括1-12根着色光纤。
在上述技术方案的基础上，所述缆芯内包括1-12根松套管。
在上述技术方案的基础上，所述中心加强件为钢丝、钢丝绳或纤维增强复合材料。
在上述技术方案的基础上，所述纤维增强复合材料为芳纶纤维增强复合材料或玻璃纤维增强复合材料。
在上述技术方案的基础上，所述铠装层为钢带螺旋铠装层、铝带螺旋铠装层或不锈钢带螺旋铠装层。
在上述技术方案的基础上，所述外护套层为聚乙烯层、尼龙层、低烟无卤层或聚氨酯层。
与现有技术相比，本发明的优点在于：
本发明的扎纱遇热自动链解型光缆的缆芯中设有遇热链解的扎纱，经扎纱捆绑的缆芯在进入挤塑机机头挤塑外护套层时，扎纱遇热自动链解，缆芯被外护套包覆形成光缆。由于扎纱在挤塑外护套层时链解，因此之前被扎纱轻微扎扁的套管可自动恢复原来形状，改善现 有光纤因松套管被扎纱扎扁而衰减超标的缺点。
同时，在光缆线路施工时，无须剥开光缆外护套以去除扎纱，方便光缆剥离和光纤熔接，提高光缆链路施工效率，特别适合于微型光缆。
附图说明
图1为本发明实施例中扎纱遇热自动链解型光缆的制造方法的流程示意图；
图2为本发明实施例中扎纱遇热自动链解型光缆的结构示意图(扎纱未链解状态下)。
图中：1-缆芯，2-铠装层，3-外护套层，4-中心加强件，5-松管套，6-扎纱，7-填充绳。
具体实施方式
以下结合附图及实施例对本发明作进一步详细说明。
参见图1所示，本发明实施例提供一种扎纱遇热自动链解型光缆的制造方法，包括以下步骤：
S1，选用在温度120-140℃条件下自动链解的复合材料制成扎纱6；
S2，在多根着色光纤外通过挤塑机挤塑形成松套管5；
S3，将多根松套管5绞合在中心加强件4周围，在所有的松套管5外围缠绕遇热自动链解的扎纱6形成缆芯1；
S4，参见图2所示，在缆芯1外层包覆铠装层2；
S5，在铠装层2外挤塑外护套层3，缆芯1的扎纱6遇热自动链解，形成扎纱6遇热自动链解型光缆。所述纤维材料为聚烯烃或聚酯。
不同的护套材料，其对应的挤塑温度也不同，均会高于140℃。 例如,外护套层3为低烟无卤(LSZH)时，其挤塑温度通常为150-160℃；外护套层3为聚乙烯(PE)时，其挤塑温度通常在200℃左右；外护套层3为聚酰胺(PA)时，其挤塑温度通常在200℃以上。
在缆芯1中的松套管5的数量较少时，步骤S2包括将多根填充绳7和松套管5一起绞合在中心加强件4周围，在所有的填充绳7和松套管5外围缠绕遇热链解的扎纱6形成缆芯1。
所述松套管5内包括1-12根着色光纤。所述缆芯1内包括1-12根松套管5。所述中心加强件4为钢丝、钢丝绳或纤维增强复合材料。所述纤维增强复合材料为芳纶纤维增强复合材料或玻璃纤维增强复合材料。所述铠装层2为钢带螺旋铠装层2、铝带螺旋铠装层2或不锈钢带螺旋铠装层2。所述外护套层3为聚乙烯层、尼龙层、低烟无卤层或聚氨酯层。
例如，包括以下步骤：
S1：从光纤放线架上放出1～12根着色光纤，通过可编程逻辑控制器控制光纤放线架的张力在50～160g范围内，以保证合适的光纤余长。将着色光纤穿过挤塑机机头，同时将二次被覆层材料加入挤塑机挤塑，形成松套管5。
S2：将松套管5分别进行热水、温水、冷水逐级冷却，采用红外测径仪在线监测生产的松套管5是否外径均匀；采用喷码机在松套管5外径上喷上编码，便于后续应用过程中的区分和确认，采用收线装置将松套管5收盘。调整收线张力在50～160g范围内，以保证收线速度，且盘存的松套管5不会被过分挤压。
S3：将1～12根松套管5绞合在中心加强件4周围并放置于放线架上，设置放线架张力在50～160g范围内；将扎纱6采用SZ绞合捆扎在绞合的中心加强件4和松套管5外部形成缆芯1。当松套管5根 数较少时，添加填充绳7与松套管5一起绞合，以保证缆芯1的圆整度。调整收线张力在50～160g范围内，以保证收线速度，且盘存的缆芯1不会被过分挤压。
S4：将缆芯1至于放线架，设置放线架张力在50～160g范围内；在缆芯1外层包覆铠装层2；
S5：将外护套材料加入挤塑机，在铠装层2挤塑外护套材料形成外护套层3；扎纱6遇热自动链解，形成的光缆中将不包含扎纱6；热水、温水、冷水逐级冷却，吹干印字后收盘，形成扎纱6遇热自动链解型光缆。
本发明不局限于上述实施方式，对于本技术领域的普通技术人员来说，在不脱离本发明原理的前提下，还可以做出若干改进和润饰，这些改进和润饰也视为本发明的保护范围之内。本说明书中未作详细描述的内容属于本领域专业技术人员公知的现有技术。

Claims (9)

  1. 一种扎纱遇热自动链解型光缆的制造方法，其特征在于：包括以下步骤：
    S1，选用在温度120-140℃条件下自动链解的复合材料制成扎纱(6)；
    S2，在多根着色光纤外通过挤塑机挤塑形成松套管(5)；
    S3，将多根松套管(5)绞合在中心加强件(4)周围，在所有的松套管(5)外围缠绕遇热自动链解的扎纱(6)形成缆芯(1)；
    S4，在缆芯(1)外层包覆铠装层(2)；
    S5，在铠装层(2)外挤塑外护套层(3)，缆芯(1)的扎纱(6)遇热自动链解，形成扎纱(6)遇热自动链解型光缆。
  2. 如权利要求1所述的一种扎纱遇热自动链解型光缆的制造方法，其特征在于：所述复合材料为聚烯烃或聚酯。
  3. 如权利要求1所述的一种扎纱遇热自动链解型光缆的制造方法，其特征在于：步骤S2包括将多根填充绳(7)和松套管(5)一起绞合在中心加强件(4)周围，在所有的填充绳(7)和松套管(5)外围缠绕遇热链解的扎纱(6)形成缆芯(1)。
  4. 如权利要求1所述的一种扎纱遇热自动链解型光缆的制造方法，其特征在于：所述松套管(5)内包括1-12根着色光纤。
  5. 如权利要求1所述的一种扎纱遇热自动链解型光缆的制造方法，其特征在于：所述缆芯(1)内包括1-12根松套管(5)。
  6. 如权利要求1所述的一种扎纱遇热自动链解型光缆的制造方法，其特征在于：所述中心加强件(4)为钢丝、钢丝绳或纤维增强复合材料。
  7. 如权利要求1所述的一种扎纱遇热自动链解型光缆的制造方 法，其特征在于：所述纤维增强复合材料为芳纶纤维增强复合材料或玻璃纤维增强复合材料。
  8. 如权利要求1所述的一种扎纱遇热自动链解型光缆的制造方法，其特征在于：所述铠装层(2)为钢带螺旋铠装层(2)、铝带螺旋铠装层(2)或不锈钢带螺旋铠装层(2)。
  9. 如权利要求1所述的一种扎纱遇热自动链解型光缆的制造方法，其特征在于：所述外护套层(3)为聚乙烯层、尼龙层、低烟无卤层或聚氨酯层。
PCT/CN2017/107936 2017-01-20 2017-10-27 一种扎纱遇热自动链解型光缆的制造方法 Ceased WO2018133477A1 (zh)

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