CN110673283B - Manufacturing process of optical cable - Google Patents
Manufacturing process of optical cable Download PDFInfo
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- CN110673283B CN110673283B CN201911009151.2A CN201911009151A CN110673283B CN 110673283 B CN110673283 B CN 110673283B CN 201911009151 A CN201911009151 A CN 201911009151A CN 110673283 B CN110673283 B CN 110673283B
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- ant
- injection molding
- fiber bundle
- heat
- optical fiber
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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
- G02B6/4486—Protective covering
-
- 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
Abstract
The invention discloses a manufacturing process of an optical cable, which comprises the following steps: 1) the cross framework injection molding process comprises the following steps: manufacturing a cross-shaped framework with a plurality of grooves by using an injection molding method; 2) an optical fiber bundle fixing procedure: coating adhesive on one side of the optical fiber bundle, and then respectively placing the optical fiber bundle in a plurality of grooves of the cross-shaped framework to form an optical fiber bundle core member; 3) a fiber paste coating procedure: passing the fiber bundle core member through the fiber paste container such that the fiber paste is coated on the fiber bundle core member; 4) an injection molding process: performing extrusion molding on the flame-retardant plastic, and performing injection molding on the outer surface of the optical fiber bundle core piece coated with the fiber paste to cover the flame-retardant plastic to form a flame-retardant layer, so as to obtain an optical cable core piece; 5) and (5) a detachable ant prevention component preparation process. The optical cable capable of preventing ants is conveniently and quickly produced by sequentially performing the cross framework injection molding process, the optical fiber bundle fixing process, the fiber paste coating process, the injection molding process and the detachable ant-prevention component preparation process.
Description
Technical Field
The invention relates to the field of optical cable production, in particular to a manufacturing process of an optical cable.
Background
Fiber optic cables are manufactured to meet optical, mechanical, or environmental performance specifications and utilize one or more optical fibers disposed in a covering jacket as the transmission medium and may be used individually or in groups as telecommunication cable assemblies. The optical cable is a communication line which is formed by a certain number of optical fibers into a cable core in a certain mode and is externally coated with a sheath for realizing optical signal transmission; a cable formed by subjecting an optical fiber (optical transmission carrier) to a certain process. The basic structure of the optical cable generally comprises a cable core, a reinforcing steel wire, a filler, a sheath and other parts, and further comprises a waterproof layer, a buffer layer, an insulated metal wire and other components according to requirements.
The existing optical cable basically adopts a physical mode to prevent termites, and a nylon sleeve is generally additionally arranged on the outer surface of the optical cable to reduce bite of the termites, so that the termite prevention effect cannot be durable; in chemical ant prevention, an ant-preventing agent is usually sprayed in soil, so that the effect is durable, and a large amount of agent needs to be sprayed on the ground, so that the chemical ant prevention agent is not environment-friendly.
Disclosure of Invention
The invention provides a manufacturing process of an optical cable aiming at the problems, and solves the defect that the existing optical cable adopts physical termite prevention and has short termite prevention effect time.
The technical scheme adopted by the invention is as follows:
a process for manufacturing an optical cable comprising the steps of:
1) the cross framework injection molding process comprises the following steps: manufacturing a cross-shaped framework with a plurality of grooves by using an injection molding method;
2) an optical fiber bundle fixing procedure: coating adhesive on one side of the optical fiber bundle, and then respectively placing the optical fiber bundle in a plurality of grooves of the cross-shaped framework to form an optical fiber bundle core member;
3) a fiber paste coating procedure: passing the fiber bundle core member through the fiber paste container such that the fiber paste is coated on the fiber bundle core member;
4) an injection molding process: the method comprises the steps of performing injection molding on the outer surface of the optical fiber bundle core member coated with fiber paste to cover flame-retardant plastics to form a flame-retardant layer to obtain an optical cable core member;
5) the detachable ant-proof component preparation process comprises the following steps: welding the connector lug and the electric heating wire to form a conductive assembly; fixing the conductive assembly and forming a male plug by injection molding; simultaneously, forming a female plug by injection molding; simultaneously fixing the ant-proof capsule, and then forming a heat-resistant strip by injection molding; adhering the heat-resistant strip between the male plug and the female plug through the adhesive to form a heat-resistant layer; the male plug and the female plug are fixed on a mold, the melted waterproof hot melt adhesive liquid is poured into the mold, and a waterproof hot melt adhesive layer is formed after solidification and is adhered to the inner surface of the heat-resistant layer; performing injection molding on the prefabricated nylon strip and adhering the nylon strip to the outer surface of the heat-resistant strip to form a nylon sleeve;
the detachable ant prevention assembly in the step 5) comprises four strip-shaped ant prevention units, and a male plug and a female plug matched with the male plug are respectively arranged on two sides of each ant prevention unit; the male plug is provided with at least one pair of connector lugs; a waterproof hot melt adhesive layer, a heat-resistant layer and a nylon sleeve are respectively arranged between the male plug and the female plug from inside to outside; an ant-proof capsule is fixed in the heat-resistant layer, and an ant-proof solution is arranged in the ant-proof capsule; and an electric heating wire is arranged in the waterproof hot melt adhesive layer, and two ends of the electric heating wire are connected to one pair of connectors of the male plug. According to the invention, through a cross framework injection molding process, an optical fiber bundle fixing process, a fiber paste coating process, an injection molding process and a detachable termite-proof component preparation process, the optical cable capable of preventing termites is conveniently and rapidly produced, the prepared termite-proof optical cable combines physical termite prevention and chemical termite prevention, the duration is long (can last for more than 10 years), the termite-proof effect is good, and when termites bite the nylon sleeve, the termites can touch termite-proof agents, and the termites can be effectively repelled away; meanwhile, the detachable termite-proof component can be installed in the area with the highest termite damage risk according to the requirement, and water can possibly invade into the waterproof hot melt adhesive layer due to termite gnawing, so that the resistance of the electric heating wire is changed. Through the change in the resistance value of detecting between the connector lug, can judge which section of optical cable is gnawed and eat, and then unpack apart and prevent ant subassembly and restore. When the waterproof thermal adhesive is installed, the connector lug is connected with a power supply, and the electric heating wire is electrified to generate heat, so that the waterproof thermal adhesive layer is fused and adhered to the outer surface of the optical cable core piece.
Optionally, the melting temperature of the waterproof hot melt adhesive is 80-100 ℃.
Optionally, the ant prevention solution adopts 1-3% by mass of pyrethrin solution.
Optionally, the male plug is provided with a pair of parallel strip-shaped sealing flanges; and the female plug is provided with a slot matched with the sealing flange.
Optionally, prevent ant capsule for the sphere, prevent that ant capsule inside is equipped with spherical stock solution chamber, the centre of sphere in stock solution chamber is close to one side of nylon cover partially.
Optionally, the manufacturing process of the optical cable further comprises a detachable termite-proof assembly assembling process, wherein the four detachable termite-proof assemblies are sequentially clamped by the male plugs and the female plugs on the outer surface of the optical cable core piece to form a protective sleeve, a power supply is connected to the protective sleeve through a pair of connector lugs, and the electric heating wire is electrified to generate heat so that the waterproof hot melt adhesive layer is fused and adhered to the outer surface of the optical cable core piece.
(III) advantageous effects
1. The invention combines physical ant prevention and chemical ant prevention, has long duration (more than 10 years), good ant prevention effect, can touch the ant prevention medicament when the termites bite the nylon sleeve, and can effectively drive away the termites; meanwhile, the detachable termite-proof component can be installed in the area with the highest termite damage risk according to the requirement, and water can possibly invade into the waterproof hot melt adhesive layer due to termite gnawing, so that the resistance of the electric heating wire is changed. Through the change in the resistance value of detecting between the connector lug, can judge which section of optical cable is gnawed and eat, and then unpack apart and prevent ant subassembly and restore. When the waterproof thermal adhesive is installed, the connector lug is connected with a power supply, and the electric heating wire is electrified to generate heat, so that the waterproof thermal adhesive layer is fused and adhered to the outer surface of the optical cable core piece.
Description of the drawings:
FIG. 1 is a flow chart of a process for manufacturing an optical cable of example 1 of the present invention;
FIG. 2 is a cross-sectional structural view of an optical cable according to embodiment 2 of the present invention;
fig. 3 is a structure view of a heating wire of an optical cable according to embodiment 2 of the present invention.
The figures are numbered:
1. the termite-proof module comprises a cross framework, 2, an optical fiber bundle, 3, a flame-retardant layer, 4, an termite-proof unit, 5, a male plug, 6, a female plug, 7, a connector lug, 8, a waterproof hot-melt adhesive layer, 9, a heat-resistant layer, 10, a nylon sleeve, 11, an termite-proof capsule, 12, an electric heating wire, 13, a frame strip, 14, a slot, 15, a groove, 16, a liquid storage cavity, 17, a sealing flange, 100, an optical cable core piece, 200 and a detachable termite-proof component.
The specific implementation mode is as follows:
the present invention will be described in detail below with reference to the accompanying drawings.
The first embodiment is as follows: as shown in fig. 1, 2 and 3, the present invention also discloses a manufacturing process of an optical cable, comprising the steps of:
1) the cross framework injection molding process comprises the following steps: manufacturing a cross framework 1 with a plurality of grooves by using an injection molding method;
2) an optical fiber bundle fixing procedure: coating adhesive on one side of the optical fiber bundle, and then respectively placing the optical fiber bundle in a plurality of grooves 15 of the cross-shaped framework to form an optical fiber bundle core member;
3) a fiber paste coating procedure: passing the fiber bundle core member through the fiber paste container such that the fiber paste is coated on the fiber bundle core member;
4) an injection molding process: performing injection molding on the outer surface of the optical fiber bundle core member coated with the fiber paste to cover the flame-retardant plastic to form a flame-retardant layer 3, so as to obtain an optical cable core member 100;
5) the detachable ant prevention component 200 is prepared by the following steps: welding the connector lug 7 and the heating wire 12 to form a conductive assembly; fixing the conductive component and forming a male plug 5 by injection molding; simultaneously, the female plug 6 is formed by injection molding; simultaneously fixing the ant-proof capsule, and then forming a heat-resistant strip by injection molding; adhering the heat-resistant strip between the male plug and the female plug through the adhesive to form a heat-resistant layer 9; the male plug and the female plug are fixed on a mold, the melted waterproof hot melt adhesive liquid is poured into the mold, and a waterproof hot melt adhesive layer 8 is formed after solidification and is adhered to the inner surface of the heat-resistant layer; performing injection molding on the prefabricated nylon strip and adhering the nylon strip to the outer surface of the heat-resistant strip to form a nylon sleeve 11;
6) can dismantle ant subassembly assembly process of preventing: the male plugs and the female plugs of the four detachable termite-proof assemblies are sequentially clamped on the outer surface of the optical cable core piece to form a protective sleeve, a power supply is connected through a pair of connector lugs, and the electric heating wire is electrified to generate heat so that the waterproof hot melt adhesive layer is fused and adhered on the outer surface of the optical cable core piece. The mold in this embodiment may be a long strip with a sector cross section.
Example two: as shown in fig. 2 and 3, the present invention discloses an optical cable comprising a core member 100 for optical cable and a detachable termite-proof assembly 200; the optical cable core member comprises a cross-shaped framework 1, optical fiber bundles 2 positioned on the periphery of the cross-shaped framework and a flame-retardant layer 3 positioned on the outer surface layer; and a fiber paste is also filled between the cross-shaped framework and the flame-retardant layer.
The detachable ant prevention component comprises four strip-shaped ant prevention units 4, and a male plug 5 and a female plug 6 matched with the male plug are respectively arranged on two sides of each ant prevention unit; the male plug is provided with at least one pair of connector lugs 7; a heat-resistant layer is formed between the male plug and the female plug, and a waterproof hot melt adhesive layer 8, a heat-resistant layer 9 and a nylon sleeve 10 are respectively arranged in the heat-resistant layer; the outer surface of the nylon sleeve is smooth. The male plug is provided with a pair of parallel strip-shaped sealing flanges 17; and the female plug is provided with a slot 14 matched with the sealing flange. An ant-proof capsule 11 is fixed in the heat-resistant layer, and an ant-proof solution is arranged in the ant-proof capsule; an electric heating wire 12 is arranged in the waterproof hot melt adhesive layer, and two ends of the electric heating wire are connected to one pair of connectors of the male plug. The heat-resistant layer is made of extruded polystyrene boards or expanded polystyrene boards. The ant prevention solution adopts 1-3% of pyrethrin solution by mass percent. The ant-proof capsule is spherical, a spherical liquid storage cavity 16 is arranged in the ant-proof capsule, the center of the sphere of the liquid storage cavity is close to one side of the nylon sleeve, the cross-shaped framework comprises four frame strips 13, and arc-shaped grooves 15 are formed among the frame strips; the optical fiber bundle is clamped into the groove. The melting point of the waterproof hot melt adhesive layer is 80-100 ℃.
In the implementation of the embodiment, the detachable termite-proof component is installed in the area with the highest termite damage risk evaluated in advance; when the cable core piece is installed, the power supply is connected through the connector lug, and the electric heating wire is electrified to generate heat, so that the waterproof hot melt adhesive layer is fused and adhered to the outer surface of the cable core piece. During the use, can be through the change of the resistance value between the periodic or aperiodic detection connector lug, can judge which section of optical cable is gnawed, and then unpack the ant-proof subassembly apart and restore.
The above description is only for the preferred embodiment of the present invention and is not intended to limit the scope of the present invention, and all equivalent structural changes made by using the contents of the present specification and the drawings can be directly or indirectly applied to other related technical fields and are included in the scope of the present invention.
Claims (1)
1. A process for manufacturing an optical cable, comprising the steps of:
1) the cross framework injection molding process comprises the following steps: manufacturing a cross-shaped framework with a plurality of grooves by using an injection molding method;
2) an optical fiber bundle fixing procedure: coating adhesive on one side of the optical fiber bundle, and then respectively placing the optical fiber bundle in a plurality of grooves of the cross-shaped framework to form an optical fiber bundle core member;
3) a fiber paste coating procedure: passing the fiber bundle core member through the fiber paste container such that the fiber paste is coated on the fiber bundle core member;
4) an injection molding process: the method comprises the steps of performing injection molding on the outer surface of the optical fiber bundle core member coated with fiber paste to cover flame-retardant plastics to form a flame-retardant layer to obtain an optical cable core member;
5) the detachable ant-proof component preparation process comprises the following steps: welding the connector lug and the electric heating wire to form a conductive assembly; fixing the conductive assembly and forming a male plug by injection molding; simultaneously, forming a female plug by injection molding; simultaneously fixing the ant-proof capsule, and then forming a heat-resistant strip by injection molding; adhering the heat-resistant strip between the male plug and the female plug through the adhesive to form a heat-resistant layer; the male plug and the female plug are fixed on a mold, the melted waterproof hot melt adhesive liquid is poured into the mold, and a waterproof hot melt adhesive layer is formed after solidification and is adhered to the inner surface of the heat-resistant layer; performing injection molding on the prefabricated nylon strip and adhering the nylon strip to the outer surface of the heat-resistant strip to form a nylon sleeve;
the detachable ant prevention assembly in the step 5) comprises four strip-shaped ant prevention units, and a male plug and a female plug matched with the male plug are respectively arranged on two sides of each ant prevention unit; the male plug is provided with at least one pair of connector lugs; a waterproof hot melt adhesive layer, a heat-resistant layer and a nylon sleeve are respectively arranged between the male plug and the female plug from inside to outside; an ant-proof capsule is fixed in the heat-resistant layer, and an ant-proof solution is arranged in the ant-proof capsule; an electric heating wire is arranged in the waterproof hot melt adhesive layer, and two ends of the electric heating wire are connected to one pair of connectors of the male plug; wherein the melting temperature of the waterproof hot melt adhesive is 80-100 ℃; the ant prevention solution adopts 1 to 3 mass percent of pyrethrin solution; the male plug is provided with a pair of parallel strip-shaped sealing flanges; the female plug is provided with a slot matched with the sealing flange; the ant-proof capsule is spherical, a spherical liquid storage cavity is arranged in the ant-proof capsule, and the center of the sphere of the liquid storage cavity is close to one side of the nylon sleeve; the electric heating wire is electrified to generate heat, so that the waterproof hot melt adhesive layer is fused and adhered on the outer surface of the optical cable core piece.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911009151.2A CN110673283B (en) | 2019-10-23 | 2019-10-23 | Manufacturing process of optical cable |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911009151.2A CN110673283B (en) | 2019-10-23 | 2019-10-23 | Manufacturing process of optical cable |
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| CN110673283A CN110673283A (en) | 2020-01-10 |
| CN110673283B true CN110673283B (en) | 2021-01-12 |
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| CN113433634B (en) * | 2021-05-07 | 2022-09-06 | 江苏俊知光电通信有限公司 | Remote optical cable and preparation method thereof |
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| JP3846574B2 (en) * | 2002-06-18 | 2006-11-15 | 信越化学工業株式会社 | Tracking-resistant silicone rubber composition and power cable using the same |
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| CN101292369A (en) * | 2005-07-29 | 2008-10-22 | 美国超导公司 | Architecture for high temperature superconductor wire |
| CN204178022U (en) * | 2014-10-15 | 2015-02-25 | 广东亨通光电科技有限公司 | Environment-friendly type all dielectric Anti-mouse ant-proof optical cable |
| CN206921509U (en) * | 2017-06-28 | 2018-01-23 | 四川新蓉电缆有限责任公司 | A kind of novel environment-friendly electric wire |
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| CN208000758U (en) * | 2018-03-23 | 2018-10-23 | 江苏星耀电缆有限公司 | The electric wire that protection against rodents, ant bait |
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