JPH03220511A - Optical fiber cable and production thereof - Google Patents
Optical fiber cable and production thereofInfo
- Publication number
- JPH03220511A JPH03220511A JP2015801A JP1580190A JPH03220511A JP H03220511 A JPH03220511 A JP H03220511A JP 2015801 A JP2015801 A JP 2015801A JP 1580190 A JP1580190 A JP 1580190A JP H03220511 A JPH03220511 A JP H03220511A
- Authority
- JP
- Japan
- Prior art keywords
- optical fiber
- fiber cable
- sheath
- cable
- plastic powder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000013307 optical fiber Substances 0.000 title claims abstract description 58
- 238000004519 manufacturing process Methods 0.000 title claims description 11
- 239000000843 powder Substances 0.000 claims abstract description 26
- 229920005672 polyolefin resin Polymers 0.000 claims abstract description 5
- 239000000463 material Substances 0.000 claims description 20
- 239000012530 fluid Substances 0.000 claims description 15
- 238000001816 cooling Methods 0.000 claims description 5
- 239000000835 fiber Substances 0.000 claims description 5
- 125000006850 spacer group Chemical group 0.000 abstract 1
- 238000000034 method Methods 0.000 description 12
- 238000009434 installation Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000000151 deposition Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 230000001141 propulsive effect Effects 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
Classifications
-
- 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
- G02B6/46—Processes or apparatus adapted for installing or repairing optical fibres or optical cables
- G02B6/50—Underground or underwater installation; Installation through tubing, conduits or ducts
-
- 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
- G02B6/4401—Optical cables
- G02B6/4429—Means specially adapted for strengthening or protecting the cables
- G02B6/4438—Means specially adapted for strengthening or protecting the cables for facilitating insertion by fluid drag in ducts or capillaries
-
- 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
- G02B6/4439—Auxiliary devices
- G02B6/4459—Ducts; Conduits; Hollow tubes for air blown fibres
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は光ファイバケーブルおよびその製造方法に関し
、特に、ガス流体の吹き出しを用いて導管内へ光ファイ
バケーブルを引き込む場合、長距離、かつ、高速での引
き込みを可能とした光ファイバケーブルおよびその製造
方法に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a fiber optic cable and a method for manufacturing the same, particularly when the fiber optic cable is drawn into a conduit using a jet of gaseous fluid, for long distances and The present invention relates to an optical fiber cable that can be drawn in at high speed and a method for manufacturing the same.
光ファイバケーブルの布設方法として、例えば、光ファ
イバケーブルを導管内に引き込む際、ガス流体の吹き出
しを行うようにしたものがある。この布設方法を第４図
に示し、コンプレッサー３から圧送装置５を介して導管
４内にガス流体が圧送（吹き込み）され、ボビン１に巻
回された光ファイバケーブル２が導管４内に引き込まれ
る。このような光ファイバケーブルの布設方法によると
、ガス流体の推進力を利用して光ファイバケーブルの引
き込み作業が行えるため、布設作業が簡便となる。As a method for laying an optical fiber cable, for example, there is a method in which a gas fluid is blown out when the optical fiber cable is drawn into a conduit. This installation method is shown in FIG. 4, in which gas fluid is forcedly fed (blown) into the conduit 4 from the compressor 3 via the pressure feeding device 5, and the optical fiber cable 2 wound around the bobbin 1 is drawn into the conduit 4. . According to such an optical fiber cable installation method, the optical fiber cable can be pulled in using the propulsion force of the gas fluid, which simplifies the installation process.
また、ガス流引き込み布設に適用できる光ファイバケー
ブルとして、実開昭６３−４３１１２号公報に示された
光ファイバケーブルがある。この光ファイバケーブルは
外被表面に複数の溝を有している。Furthermore, as an optical fiber cable that can be applied to the installation of gas flow, there is an optical fiber cable disclosed in Japanese Utility Model Application Publication No. 63-43112. This optical fiber cable has a plurality of grooves on the outer jacket surface.
しかし、以上述べた光ファイハゲープルの布設方法によ
ると、導管内に引き込まれる光ファイバケーブルの外被
表面の溝はケーブル軸方向のガス流に対して流体抵抗が
低いため、数百米程度の布設しかできず、千ｍ程度の長
距離にかけて光ファイバケーブルを引き込むことができ
ないという不都合がある。また、引き込み作業の高速化
にも限度があり、作業性を低下させている。However, according to the above-mentioned method of installing optical fiber cables, the grooves on the surface of the jacket of the optical fiber cable drawn into the conduit have low fluid resistance against the gas flow in the cable axis direction. There is a disadvantage that the optical fiber cable can only be installed, and it is not possible to run the optical fiber cable over a long distance of about 1,000 meters. Furthermore, there is a limit to the speeding up of the pulling work, which reduces work efficiency.
従って、本発明の目的はガス流体の吹き出しを用いて光
ファイバケーブルを導管内に引き込む場合、ケーブルを
長距離、かつ、高速で引き込むことができる光ファイバ
ケーブルおよびその製造方法を提供することである。SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide an optical fiber cable that can be drawn in a long distance and at high speed when the fiber optic cable is drawn into a conduit using a blowout of gas fluid, and a method for manufacturing the same. .
本発明は以上述べた目的を実現するため、ケーブルシー
スの表面に粉末プラスチックの付着等に基づく複数の凹
凸を設けた光ファイバケーブルを提供するものである。In order to achieve the above-mentioned object, the present invention provides an optical fiber cable in which a plurality of projections and recesses are provided on the surface of a cable sheath based on the adhesion of powdered plastic or the like.
また、この光ファイバケーブルは以下のようにして製造
される。Moreover, this optical fiber cable is manufactured as follows.
複数の光ファイバ等を有する光ファイバ集合体を押出機
に供給して、前記光ファイバ集合体の外周にポリオレフ
ィン樹脂等のシース材を被覆し、前記シース材が固化す
る前に該シース材の表面にプラスチック粉末体を付着さ
せ、プラスチック粉末体が付着したシース材を冷却部に
供給して、前記シース材を固化し、前記シース材と前記
プラスチック粉末体を固着させる。An optical fiber assembly having a plurality of optical fibers, etc. is supplied to an extruder, the outer periphery of the optical fiber assembly is coated with a sheath material such as polyolefin resin, and the surface of the sheath material is coated before the sheath material solidifies. A plastic powder is attached to the plastic powder, and the sheath material to which the plastic powder is attached is supplied to a cooling section to solidify the sheath material and fix the sheath material and the plastic powder.
ここで、プラスチック粉末体を付着させる場合には、シ
ースを押し出し直後、例えば、内部にプラスチック粉末
体を浮遊させた粉末体付着機に案内しで固化前で粘着性
を有しているシース材に浮遊状態にあるプラスチック粉
末体を付着させれば良い。ただし、ケーブルシースの表
面を凸凹を設ける方法は、これに限定するものではなく
、表面を切削して凸凹を設けても良く、更には、大きな
発泡を形成したシースの冷却を適切に行うことにより、
表面に発泡残穴（クレータ状の穴）を形成しても良い。Here, when attaching plastic powder, immediately after extruding the sheath, for example, guide it to a powder attaching machine with plastic powder suspended inside, and apply it to the sheath material, which is sticky before solidification. It is sufficient to attach plastic powder in a floating state. However, the method of providing unevenness on the surface of the cable sheath is not limited to this, and it is also possible to create unevenness by cutting the surface. ,
Foaming holes (crater-shaped holes) may be formed on the surface.
本発明では、ケーブルシースの外周に複数の凸凹を形成
したため、ガス流体の吹き出しを用いて光ファイバケー
ブルを導管内に引き込む場合、光ファイバケーブルに対
するガス流体の流体抵抗が高まり、ガス流体の推進力を
光ファイバケーブルに有効に与えることができる。この
ため、光ファイバケーブルの長距離の引き込みが行え、
また、引き込み速度も高速にすることができる。In the present invention, since a plurality of irregularities are formed on the outer periphery of the cable sheath, when the optical fiber cable is drawn into the conduit using a blowout of gas fluid, the fluid resistance of the gas fluid against the optical fiber cable increases, and the propulsive force of the gas fluid increases. can be effectively applied to optical fiber cables. This makes it possible to run optical fiber cables over long distances.
Moreover, the retraction speed can also be increased.
以下、本発明の光ファイバケーブルおよびその製造方法
を詳細に説明する。Hereinafter, the optical fiber cable of the present invention and its manufacturing method will be explained in detail.
第１図（ａｌ、（ｂ）は本発明の一実施例を示し、介在
７等と、複数の光ファイバ６によって光ファイバ集合体
１０が形成され、光ファイバ集合体１０の外周にはポリ
オレフィン樹脂等から成るシース８が施され、更に、シ
ース８の表面には、プラスチック粉末体９が設けられて
いる。FIGS. 1A and 1B show an embodiment of the present invention, in which an optical fiber assembly 10 is formed by an interposer 7, etc. and a plurality of optical fibers 6, and the outer periphery of the optical fiber assembly 10 is made of polyolefin resin. A sheath 8 consisting of the like is provided, and a plastic powder 9 is further provided on the surface of the sheath 8.
この光ファイバケーブルの製造方法を第２図（ａ）。FIG. 2(a) shows the manufacturing method of this optical fiber cable.
（ｂｌに基づいて説明する。(This will be explained based on bl.
まず、送出機１３によってボビン１１に巻回された光フ
ァイバ集合体１０を送り出し、押出機１２のクロスヘツ
ド１２ａに通してポリオレフィン樹脂等のシース材を光
ファイバ集合体１０の外周に被覆する。シース材が被覆
された光ファイバ集合体１０はこの直後、シース材が固
化する前で粘着性を有している間に粉末体付着機１４に
通され、ここで、シース材の表面にプラスチック粉末体
９を付着する。この粉末体付着機１４はホンパー２１か
ら供給量調整弁２２を介して供給されるプラスチック粉
末体９をブロアー２３の風力によって浮遊させており、
ここに粘着性を有したシース８を通すと、プラスチック
粉末体９が付着する。このようにしてプラスチック粉末
体９を付着したシース材を冷却部１５に供給し、ここで
シース８を固化してシース８とプラスチック粉末体９の
固着を行う。このようにして光ファイバケーブル２を製
造すると、これを引取機１６を介してボビン１７に巻き
取る。First, the optical fiber assembly 10 wound around the bobbin 11 is sent out by the delivery machine 13, and passed through the crosshead 12a of the extruder 12 to coat the outer periphery of the optical fiber assembly 10 with a sheath material such as polyolefin resin. Immediately after this, the optical fiber assembly 10 coated with the sheath material is passed through a powder depositing machine 14 while the sheath material is still sticky and has not yet solidified. Here, the surface of the sheath material is coated with plastic powder. Attach body 9. This powder depositing machine 14 suspends the plastic powder 9 supplied from the pumper 21 via the supply amount adjustment valve 22 by the wind force of the blower 23.
When a sticky sheath 8 is passed through this, a plastic powder 9 is attached. The sheath material to which the plastic powder 9 is attached in this way is supplied to the cooling section 15, where the sheath 8 is solidified and the sheath 8 and the plastic powder 9 are fixed together. After the optical fiber cable 2 is manufactured in this manner, it is wound onto a bobbin 17 via a take-up machine 16.
この光ファイバケーブル２を、第３図に示すような方法
、即ち、コンプレッサーからのガス流２５により導管４
内に光ファイバケーブル２を引き込む。ガス流２５は導
管４内に引き込まれた光ファイバケーブル２の外周のプ
ラスチック粉末体９に矢印方向の推進力を与える。この
ため、導管４内において光ファイバケーブル２を容易に
推進させることができる。The fiber optic cable 2 is connected to the conduit 4 by the method shown in FIG.
Pull the optical fiber cable 2 inside. The gas flow 25 imparts a driving force in the direction of the arrow to the plastic powder 9 on the outer periphery of the optical fiber cable 2 drawn into the conduit 4. Therefore, the optical fiber cable 2 can be easily propelled within the conduit 4.
尚、ケーブルシースの表面に設けられる凸凹は、プラス
チック粉末体の付着に限定するものではな（、前述した
ように表面を切削して凸凹を設けても良く、更には、大
きな発泡を有するシースの冷却を適切に行うことにより
、表面に発泡残穴（クレータ状の穴）を形成しても良い
。Incidentally, the unevenness provided on the surface of the cable sheath is not limited to the adhesion of plastic powder (as mentioned above, the surface may be cut to create unevenness, and furthermore, it is possible to create unevenness on the surface of the cable sheath with large foam). By performing cooling appropriately, foamed holes (crater-shaped holes) may be formed on the surface.
以上説明した通り、本発明の光ファイバケーブルおよび
その製造方法によると、以下の効果を奏することができ
る。As explained above, according to the optical fiber cable and the manufacturing method thereof of the present invention, the following effects can be achieved.
（１１光ファイバケーブルに対するガス流体の流体抵抗
を高めることができ、ガス流体の推進力を有効に光ファ
イバケーブルに与えることができる。このため、光ファ
イバケーブルを長距離（例えば、千ｍ以上）にかけて引
き込むことができ、その引き込みも高速で行うことがで
きる。(11) The fluid resistance of the gas fluid against the optical fiber cable can be increased, and the propulsion force of the gas fluid can be effectively applied to the optical fiber cable.For this reason, the optical fiber cable can be used for long distances (for example, over 1,000 m). It can be pulled in at high speed.
（２）布設作業を行う際、複数の凹凸がクツション材の
役割を果たすため、光ファイバの断線等を防ぎ、布設後
の信頼性を向上させることができる。(2) When performing the installation work, since the plurality of irregularities serve as a cushioning material, breakage of the optical fiber can be prevented and reliability after installation can be improved.
（３）従来の光ファイバケーブルの製造工程に工程を一
つ追加するだけで製造できるので、既設の製造装置をそ
のまま利用することができる。(3) Since it can be manufactured by adding one step to the conventional optical fiber cable manufacturing process, existing manufacturing equipment can be used as is.
第１図（ａ）、 （ｂｌは本発明の一実施例を示す説明
図、第２図（ａｌ、 （ｂ）は本発明の光ファイバケー
ブルの製造方法を示す説明図、第３図は導管内における
光ファイバケーブルとガス流体の関係を示す説明図、第
４図は光ファイバケーブルの布設方法を示す説明図。
符号の説明
１−一−−−−−−−−−ボビン
２−−−−−−−一・−光ファイバケーブル３・−・−
−−−−コンプレッサー
４−−−−−−−−−−導管 ５−・−・−
圧送装置６−−−−−−−−光ファイバ ？ −−
−−−・・−・−・介在８−−−−−−−−−−−シー
ス
９−−−−一・・−プラスチック粉末体１０−・−−−
−−−−一・光ファイバ集合体１１・・−−−−−−−
一−ボビン １２−・−−−−−−−−一押出機
１２ ａ−−−−−−−一・−クロスヘフド１３−−−
−−−−−一送出機
１４−−−−−−−一粉末体付着機 １５−−−−−−
−−−−一冷却部１６−・−・・−引取機
１７−−−−−−−−−−−ボビンFigures 1(a) and (bl are explanatory diagrams showing one embodiment of the present invention, Figures 2(al) and (b) are explanatory diagrams showing the method for manufacturing an optical fiber cable of the present invention, and Figure 3 is a conduit. Fig. 4 is an explanatory diagram showing the relationship between the optical fiber cable and the gas fluid in the interior, and Fig. 4 is an explanatory diagram showing the method of laying the optical fiber cable. −−−−1・−Optical fiber cable 3・−・−
---Compressor 4---------- Conduit 5--・--・-
Pressure feeding device 6 --- Optical fiber? ---
---・・--・- Interposition 8 ---------- Sheath 9 --- 1 --- Plastic powder body 10 ---
------1. Optical fiber assembly 11...------
1-Bobbin 12-------1 extruder 12 a-----1--Cross hefed 13--
-------1 Sending machine 14-------1 Powder deposition machine 15--------
----1 Cooling section 16--- Take-up machine 17--------- Bobbin
Claims (2)
まれる光ファイバケーブルにおいて、 ケーブルシースの表面に複数の凹凸が設けられているこ
とを特徴とする光ファイバケーブル。(1) An optical fiber cable that is drawn into a conduit while being blown out of gas fluid, characterized in that the surface of the cable sheath is provided with a plurality of irregularities.
押出機に供給して、前記光ファイバ集合体の外周にポリ
オレフィン樹脂等のシース材を被覆し、前記シース材が
固化する前に該シース材の表面にプラスチック粉末体を
付着させ、 プラスチック粉末体が付着したシース材を冷却部に供給
して前記シース材を固化し、前記シース材と前記プラス
チック粉末体を固着させることを特徴とする光ファイバ
ケーブルの製造方法。(2) An optical fiber assembly having a plurality of optical fibers, etc. is supplied to an extruder, the outer periphery of the optical fiber assembly is coated with a sheath material such as polyolefin resin, and the sheath material is coated before the sheath material is solidified. A light source characterized in that a plastic powder is attached to the surface of the material, and the sheath material to which the plastic powder is attached is supplied to a cooling section to solidify the sheath material, thereby fixing the sheath material and the plastic powder. Method of manufacturing fiber cable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2015801A JP2830287B2 (en) | 1990-01-25 | 1990-01-25 | Manufacturing method of optical fiber cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2015801A JP2830287B2 (en) | 1990-01-25 | 1990-01-25 | Manufacturing method of optical fiber cable |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03220511A true JPH03220511A (en) | 1991-09-27 |
| JP2830287B2 JP2830287B2 (en) | 1998-12-02 |
Family
ID=11898944
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2015801A Expired - Lifetime JP2830287B2 (en) | 1990-01-25 | 1990-01-25 | Manufacturing method of optical fiber cable |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2830287B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2371100A (en) * | 2000-12-02 | 2002-07-17 | Mitsui Babcock Energy Ltd | Cable device for inspecting conduits |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6287915A (en) * | 1985-10-14 | 1987-04-22 | Kiyoshi Hajikano | Optical fiber |
| JPS6343112U (en) * | 1986-09-08 | 1988-03-23 | ||
| JPH01157307U (en) * | 1988-04-21 | 1989-10-30 |
-
1990
- 1990-01-25 JP JP2015801A patent/JP2830287B2/en not_active Expired - Lifetime
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6287915A (en) * | 1985-10-14 | 1987-04-22 | Kiyoshi Hajikano | Optical fiber |
| JPS6343112U (en) * | 1986-09-08 | 1988-03-23 | ||
| JPH01157307U (en) * | 1988-04-21 | 1989-10-30 |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2371100A (en) * | 2000-12-02 | 2002-07-17 | Mitsui Babcock Energy Ltd | Cable device for inspecting conduits |
| GB2371100B (en) * | 2000-12-02 | 2004-09-29 | Mitsui Babcock Energy Ltd | Cable transport system |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2830287B2 (en) | 1998-12-02 |
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