CN114217393A - Butterfly-shaped lead-in optical cable for pipeline and production process thereof - Google Patents
Butterfly-shaped lead-in optical cable for pipeline and production process thereof Download PDFInfo
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- CN114217393A CN114217393A CN202111288071.2A CN202111288071A CN114217393A CN 114217393 A CN114217393 A CN 114217393A CN 202111288071 A CN202111288071 A CN 202111288071A CN 114217393 A CN114217393 A CN 114217393A
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- 230000001681 protective effect Effects 0.000 claims abstract description 28
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- 238000012545 processing Methods 0.000 claims abstract description 23
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Images
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
- G02B6/44—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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C37/00—Component parts, details, accessories or auxiliary operations, not covered by group B29C33/00 or B29C35/00
- B29C37/0092—Drying moulded articles or half products, e.g. preforms, during or after moulding or cooling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/022—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the choice of material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/15—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor incorporating preformed parts or layers, e.g. extrusion moulding around inserts
- B29C48/154—Coating solid articles, i.e. non-hollow articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/28—Storing of extruded material, e.g. by winding up or stacking
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/285—Feeding the extrusion material to the extruder
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/30—Extrusion nozzles or dies
- B29C48/32—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles
-
- 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
- G02B6/443—Protective covering
- G02B6/4432—Protective covering with fibre reinforcements
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Light Guides In General And Applications Therefor (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The invention relates to a butterfly-shaped leading-in optical cable for a pipeline and a production process thereof; the production process of the butterfly-shaped leading-in optical cable for the pipeline comprises the following steps of putting optical fibers into wire core processing equipment for processing, putting the obtained optical fibers into a first extrusion molding die, and extruding a protective sleeve material on the surfaces of the optical fibers by the first extrusion molding die to form a first protective layer to obtain optical cable cores; placing the optical cable core and the reinforcing element into a second extrusion molding die, and extruding a protective sleeve material on the surfaces of the optical cable core and the reinforcing element by the second extrusion molding die to form a second protective layer so as to obtain the butterfly-shaped leading-in optical cable for the pipeline; the problems that the existing butterfly-shaped drop cable for the pipeline is easy to damage, the protection performance of the internal optical fiber is not strong, and the follow-up maintenance is inconvenient are solved.
Description
Technical Field
The invention relates to the technical field of cable production, in particular to a butterfly-shaped lead-in optical cable for a pipeline and a production process thereof.
Background
The butterfly-shaped optical cable is a novel user access optical cable and is named after the butterfly-shaped cross section. The method plays a unique role in establishing networks such as intelligent buildings, digital cells, campus networks, local area networks and the like.
The existing butterfly-shaped drop optical cable for the pipeline is easy to damage, has low protectiveness to the internal optical fiber, causes inconvenient follow-up maintenance, and has low processing efficiency and poor processing quality for the wire core when the optical cable is produced.
In order to solve the above-mentioned drawbacks, a technical solution is now provided.
Disclosure of Invention
The invention aims to provide a butterfly-shaped lead-in optical cable for a pipeline and a production process thereof.
The technical problems to be solved by the invention are as follows:
the existing butterfly-shaped drop optical cable for the pipeline is easy to damage, has low protectiveness to the internal optical fiber, causes inconvenient follow-up maintenance, and has low processing efficiency and poor processing quality for the wire core when the optical cable is produced.
The purpose of the invention can be realized by the following technical scheme:
a production process of a butterfly-shaped leading-in optical cable for pipelines comprises the following steps:
putting the optical fiber into core processing equipment for processing, putting the obtained optical fiber into a first extrusion molding die, and extruding a protective sleeve material on the surface of the optical fiber by the first extrusion molding die to form a first protective layer to obtain an optical cable core;
and step two, placing the optical cable core and the reinforcing element into a second extrusion molding die, and extruding a protective sleeve material on the surfaces of the optical cable core and the reinforcing element by the second extrusion molding die to form a second protective layer, so as to obtain the butterfly-shaped lead-in optical cable for the pipeline.
Further, the reinforcing element is one or more of CFRP, GFRP, AFRP and BFRP mixed in any proportion.
Further, the preparation method of the protective sleeve material comprises the following steps:
the ethylene propylene diene monomer, the acrylate rubber and the fluorosilicone rubber are placed in a mixer, mixed for 30-40min at the temperature of 90-100 ℃ and the rotation speed of 200-300r/min, then the flame retardant, the vulcanizing agent and the waterproof agent are added into the mixer, the temperature is increased to 140-150 ℃ and the rotation speed is increased to 400-500r/min, the mixture is mixed for 20-30min to obtain a molding material, and the molding material is extruded and granulated to obtain the protective sleeve material.
Further, the protective sleeve material comprises the following raw materials in parts by weight: 40-50 parts of ethylene propylene diene monomer, 30-38 parts of acrylate rubber, 12-15 parts of fluorosilicone rubber, 3-5 parts of flame retardant, 6-10 parts of vulcanizing agent and 1-3 parts of waterproof agent.
Further, the flame retardant is one or two of decabromodiphenyl ethane or decabromodiphenyl ether which are mixed in any proportion.
Further, the vulcanizing agent is one or two of N-nitrosodiphenylamine or tetramethyl thiuram disulfide which are mixed in any proportion.
Further, the waterproof agent is one or two of polyether glycol or asphalt mixed in any proportion.
Further, the working process of the wire core processing equipment is as follows:
firstly, one end of an optical fiber penetrates through a traction hole, sequentially penetrates through a coating groove and a drying groove and is fixed with the outer surface of a winding roller, and the optical fiber is wound through a winding mechanism;
secondly, resin enters the coating ring through a feeding pipe, the surface of the optical fiber is coated along a plurality of coating nozzles, and the resin is recycled in a collecting chamber;
and thirdly, starting the exhaust fan to suck external air into the drying chamber through the connecting pipe, heating the air through the electric heating rod, and spraying the air from the air outlet to dry and solidify the coated optical fiber.
A butterfly-shaped drop cable for a pipeline, which is produced by the production process for a butterfly-shaped drop cable for a pipeline according to claim 1.
The invention has the beneficial effects that:
the method has the advantages of simple steps, convenient operation and stable performance. According to the invention, the flame retardant and the waterproof agent are added into the protective sleeve material, so that the flame retardant performance and the waterproof performance are improved, and the protective layer of the optical cable shows good comprehensive performance: under the condition of 200 ℃, the elongation at break reaches more than 472%, and the tensile strength reaches more than 24.3Mpa, which shows that the invention has excellent mechanical property and good high-temperature resistance in a high-temperature environment; through a water permeability resistance test, no water penetration point exists, and good water resistance is shown.
According to the invention, the winding mechanism is arranged, so that the winding motor drives the winding roller on the winding rod to wind the optical fiber. The traction hole is used for drawing the optical fiber, and the winding mechanism is matched to ensure that the optical fiber is in a good tensile state when being processed, so that the coating mechanism is convenient to coat.
Through setting up coating mechanism for hybrid motor drives the epaxial mixing blade of mixing and mixes the resin, avoids the resin to solidify in advance and influences the coating quality, and the resin passes through the inlet pipe and gets into in the coating ring to coat to the fiber surface along a plurality of coating shower nozzles, and coating is effectual, improves the processingquality of sinle silk, and the resin that drips after the coating gets into in the collecting chamber from the coating groove, can carry out recycle, avoids extravagant.
Through setting up stoving mechanism for the air exhauster passes through the connecting pipe suction drying chamber with outside air, heats the air through the electric heating pole, and carries out the drying solidification to the optic fibre after the coating from the air outlet blowout, and subsequent rolling of being convenient for improves the machining efficiency of sinle silk.
Drawings
The invention is described in further detail below with reference to the figures and specific embodiments.
FIG. 1 is a flow chart of a process for manufacturing a butterfly drop cable for a conduit according to the present invention;
FIG. 2 is a schematic structural view of a wire core processing apparatus of the present invention;
FIG. 3 is a schematic view of the construction of the coating mechanism of the present invention;
FIG. 4 is a schematic structural view of a coating module of the present invention;
fig. 5 is a schematic structural view of the drying mechanism of the present invention.
In the figure: 1. a support table; 2. a traction plate; 3. a coating mechanism; 4. a drying mechanism; 5. a winding mechanism; 101. a support frame; 201. a drawing hole; 301. a coating chamber; 302. a feed inlet; 303. a hybrid motor; 304. a mixing shaft; 305. a mixing blade; 306. a coating tank; 307. coating the component; 308. a collection chamber; 401. a drying chamber; 402. an exhaust fan; 403. a connecting pipe; 404. a drying chamber; 405. an electrical heating rod; 406. an air outlet; 407. a drying tank; 501. winding the rod; 502. a wind-up roll; 503. a winding motor; 3071. coating a circular ring; 3072. coating a spray head; 3073. and (4) feeding a pipe.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-5, the present invention provides a technical solution:
example 1
A production process of a butterfly-shaped leading-in optical cable for pipelines comprises the following steps:
putting the optical fiber into core processing equipment for processing, putting the obtained optical fiber into a first extrusion molding die, and extruding a protective sleeve material on the surface of the optical fiber by the first extrusion molding die to form a first protective layer to obtain an optical cable core;
and step two, placing the optical cable core and the reinforcing element into a second extrusion molding die, and extruding a protective sleeve material on the surfaces of the optical cable core and the reinforcing element by the second extrusion molding die to form a second protective layer, so as to obtain the butterfly-shaped lead-in optical cable for the pipeline.
The reinforcing element is one or more of CFRP, GFRP, AFRP and BFRP mixed in any proportion.
The preparation method of the protective sleeve material comprises the following steps:
the method comprises the steps of putting ethylene propylene diene monomer, acrylate rubber and fluorosilicone rubber into a mixer, mixing for 30min at the temperature of 90 ℃ and the rotating speed of 200r/min, adding a flame retardant, a vulcanizing agent and a waterproof agent into the mixer, increasing the temperature to 140 ℃ and the rotating speed to 400r/min, mixing for 20min to obtain a molding material, and extruding and granulating the molding material to obtain the protective sleeve material.
The protective sleeve material comprises the following raw materials in parts by weight: 40 parts of ethylene propylene diene monomer, 30 parts of acrylate rubber, 1 part of fluorosilicone rubber, 3 parts of flame retardant, 6 parts of vulcanizing agent and 1 part of waterproof agent.
The flame retardant is one or two of decabromodiphenyl ethane or decabromodiphenyl ether which are mixed in any proportion.
The vulcanizing agent is one or two of N-nitrosodiphenylamine or tetramethyl thiuram disulfide which are mixed in any proportion.
The waterproof agent is one or two of polyether glycol or asphalt mixed in any proportion.
Example 2
A production process of a butterfly-shaped leading-in optical cable for pipelines comprises the following steps:
putting the optical fiber into core processing equipment for processing, putting the obtained optical fiber into a first extrusion molding die, and extruding a protective sleeve material on the surface of the optical fiber by the first extrusion molding die to form a first protective layer to obtain an optical cable core;
and step two, placing the optical cable core and the reinforcing element into a second extrusion molding die, and extruding a protective sleeve material on the surfaces of the optical cable core and the reinforcing element by the second extrusion molding die to form a second protective layer, so as to obtain the butterfly-shaped lead-in optical cable for the pipeline.
The reinforcing element is one or more of CFRP, GFRP, AFRP and BFRP mixed in any proportion.
The preparation method of the protective sleeve material comprises the following steps:
the ethylene propylene diene monomer, the acrylate rubber and the fluorosilicone rubber are placed in a mixer, mixed for 35min at the temperature of 95 ℃ and the rotating speed of 250r/min, then the flame retardant, the vulcanizing agent and the waterproof agent are added into the mixer, the temperature is increased to 1450 ℃ and the rotating speed is increased to 450r/min, mixed for 25min to obtain a molding material, and the molding material is extruded and granulated to obtain the protective sleeve material.
The protective sleeve material comprises the following raw materials in parts by weight: 45 parts of ethylene propylene diene monomer, 34 parts of acrylate rubber, 13 parts of fluorosilicone rubber, 4 parts of flame retardant, 8 parts of vulcanizing agent and 2 parts of waterproof agent.
The flame retardant is one or two of decabromodiphenyl ethane or decabromodiphenyl ether which are mixed in any proportion.
The vulcanizing agent is one or two of N-nitrosodiphenylamine or tetramethyl thiuram disulfide which are mixed in any proportion.
The waterproof agent is one or two of polyether glycol or asphalt mixed in any proportion.
Example 3
A production process of a butterfly-shaped leading-in optical cable for pipelines comprises the following steps:
putting the optical fiber into core processing equipment for processing, putting the obtained optical fiber into a first extrusion molding die, and extruding a protective sleeve material on the surface of the optical fiber by the first extrusion molding die to form a first protective layer to obtain an optical cable core;
and step two, placing the optical cable core and the reinforcing element into a second extrusion molding die, and extruding a protective sleeve material on the surfaces of the optical cable core and the reinforcing element by the second extrusion molding die to form a second protective layer, so as to obtain the butterfly-shaped lead-in optical cable for the pipeline.
The reinforcing element is one or more of CFRP, GFRP, AFRP and BFRP mixed in any proportion.
The preparation method of the protective sleeve material comprises the following steps:
the method comprises the steps of putting ethylene propylene diene monomer, acrylate rubber and fluorosilicone rubber into a mixer, mixing for 40min at the temperature of 100 ℃ and the rotating speed of 300r/min, adding a flame retardant, a vulcanizing agent and a waterproof agent into the mixer, increasing the temperature to 150 ℃ and the rotating speed to 500r/min, mixing for 30min to obtain a molding material, and extruding and granulating the molding material to obtain the protective sleeve material.
The protective sleeve material comprises the following raw materials in parts by weight: 50 parts of ethylene propylene diene monomer, 38 parts of acrylate rubber, 15 parts of fluorosilicone rubber, 5 parts of flame retardant, 10 parts of vulcanizing agent and 3 parts of waterproof agent.
The flame retardant is one or two of decabromodiphenyl ethane or decabromodiphenyl ether which are mixed in any proportion.
The vulcanizing agent is one or two of N-nitrosodiphenylamine or tetramethyl thiuram disulfide which are mixed in any proportion.
The waterproof agent is one or two of polyether glycol or asphalt mixed in any proportion.
The core processing equipment in the embodiment comprises a supporting table 1, wherein a plurality of supporting frames 101 are fixed on one side of the supporting table 1, the supporting frames 101 are in an inverted 7-shaped shape, a traction plate 2 is fixed at the bottom of one supporting frame 101, a coating mechanism 3 for resin on the surface of an optical fiber is arranged on one side of the traction plate 2, a drying mechanism 4 for drying and curing the optical fiber is arranged on one side of the coating mechanism 3, and a winding mechanism 5 is arranged on one side of the drying mechanism 4;
The coating mechanism 3 comprises a coating chamber 301 fixed with the bottom of the support frame 101 through a fixing rod, a feed inlet 302 is formed in the top of the coating chamber 301, a mixing motor 303 is fixed on one side of the coating chamber 301, the output end of the mixing motor 303 penetrates through the coating chamber 301 and is fixed with a mixing shaft 304, a plurality of uniformly distributed mixing blades 305 are fixed on the outer surface of the mixing shaft 304, a coating groove 306 is formed in the bottom end of the interior of the coating chamber 301 in a penetrating mode, a plurality of uniformly distributed coating assemblies 307 are arranged in the coating groove 306, a collecting chamber 308 is fixed at the bottom of the coating chamber 301, and the collecting chamber 308 is communicated with the coating groove 306; the coating assembly 307 comprises a coating ring 3071, the coating ring 3071 is hollow, a plurality of coating nozzles 3072 are fixed on the inner surface of the coating ring 3071, a feed pipe 3073 is fixed on the top of the coating ring 3071, and two ends of the feed pipe 3073 are respectively communicated with the coating chamber 301 and the coating ring 3071. Through setting up coating mechanism 3 for hybrid motor 303 drives mixing blade 305 on the mixing shaft 304 and mixes the resin, avoids the resin to solidify in advance and influences the coating quality, and the resin passes through in inlet pipe 3073 gets into coating ring 3071, and coat to the fiber surface along a plurality of coating shower nozzles 3072, and it is effectual to coat, and the resin that drips after the coating gets into collection chamber 308 from coating groove 306 in, can carry out recycle, avoids extravagant.
The drying mechanism 4 comprises a drying chamber 401 fixed with the bottom of the support frame 101 through a fixing rod, an exhaust fan 402 is fixed at the top end of the outside of the drying chamber 401, the output end of the exhaust fan 402 penetrates through the drying chamber 401 and is fixed with a connecting pipe 403, drying chambers 404 are fixed at the bottoms of two ends of the connecting pipe 403, a plurality of electric heating rods 405 are fixed inside the drying chambers 404, the drying chambers 404 are communicated with the connecting pipe 403, an air outlet 406 is fixed at the bottom of each drying chamber 404, and drying grooves 407 which are symmetrically distributed are formed in two sides of the drying chamber 401. Through setting up stoving mechanism 4 for in air exhauster 402 passes through connecting pipe 403 suction drying chamber 404 with the outside air, heat the air through electric heating rod 405, and carry out dry curing to the optic fibre after the coating from air outlet 406 blowout, subsequent rolling of being convenient for improves the processingquality of sinle silk.
The winding mechanism 5 comprises two symmetrically distributed supporting plates, the two supporting plates are respectively fixed with the supporting frame 101 and the supporting table 1, a winding rod 501 is rotatably connected between the two supporting plates, a winding roller 502 is fixed on the outer surface of the winding rod 501, a winding motor 503 is fixed on the top of the supporting frame 101, and one end of the winding rod 501 penetrates through the supporting plates and the supporting frame 101 and is fixed with the output end of the winding motor 503. By arranging the winding mechanism 5, the winding motor 503 drives the winding roller 502 on the winding rod 501 to wind the optical fiber.
The working principle of the wire core processing equipment is as follows:
when the optical fiber winding device is used, one end of an optical fiber firstly penetrates through the traction hole 201, and sequentially penetrates through the coating groove 306 and the drying groove 407 and is fixed with the outer surface of the winding roller 502, and the winding motor 503 is started to drive the winding roller 502 on the winding rod 501 to wind the optical fiber;
resin is put into the coating chamber 301 from the feed port 302, the mixing motor 303 is started to drive the mixing blades 305 on the mixing shaft 304 to mix the resin, the resin is prevented from being solidified in advance to influence the coating quality, the resin enters the coating ring 3071 through the feed pipe 3073 and coats the surface of the optical fiber along the coating nozzles 3072, and the resin dropped after coating enters the collection chamber 308 from the coating groove 306 for recycling;
the exhaust fan 402 is started to suck external air into the drying chamber 404 through the connecting pipe 403, the air is heated through the electric heating rod 405, and the air is sprayed out from the air outlet 406 to dry and solidify the coated optical fiber, so that the processing quality of the wire core is improved.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "left", "right", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation and a specific orientation configuration and operation, and thus, should not be construed as limiting the present invention. Furthermore, "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be directly connected or indirectly connected through an intermediate member, or they may be connected through two or more elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
While one embodiment of the present invention has been described in detail, the description is only a preferred embodiment of the present invention and should not be taken as limiting the scope of the invention. All equivalent changes and modifications made within the scope of the present invention shall fall within the scope of the present invention.
Claims (9)
1. A production process of a butterfly-shaped leading-in optical cable for a pipeline is characterized by comprising the following steps:
putting the optical fiber into core processing equipment for processing, putting the obtained optical fiber into a first extrusion molding die, and extruding a protective sleeve material on the surface of the optical fiber by the first extrusion molding die to form a first protective layer to obtain an optical cable core;
and step two, placing the optical cable core and the reinforcing element into a second extrusion molding die, and extruding a protective sleeve material on the surfaces of the optical cable core and the reinforcing element by the second extrusion molding die to form a second protective layer, so as to obtain the butterfly-shaped lead-in optical cable for the pipeline.
2. The process of claim 1, wherein the strength member is one or more of CFRP, GFRP, AFRP and BFRP mixed in any proportion.
3. The process for producing a butterfly-shaped drop cable for pipelines as claimed in claim 1, wherein the protective sheath material is prepared by the following steps:
the ethylene propylene diene monomer, the acrylate rubber and the fluorosilicone rubber are placed in a mixer, mixed for 30-40min at the temperature of 90-100 ℃ and the rotation speed of 200-300r/min, then the flame retardant, the vulcanizing agent and the waterproof agent are added into the mixer, the temperature is increased to 140-150 ℃ and the rotation speed is increased to 400-500r/min, the mixture is mixed for 20-30min to obtain a molding material, and the molding material is extruded and granulated to obtain the protective sleeve material.
4. The production process of the butterfly-shaped drop cable for the pipeline as claimed in claim 3, wherein the protective sleeve material comprises the following raw materials in parts by weight: 40-50 parts of ethylene propylene diene monomer, 30-38 parts of acrylate rubber, 12-15 parts of fluorosilicone rubber, 3-5 parts of flame retardant, 6-10 parts of vulcanizing agent and 1-3 parts of waterproof agent.
5. The process for manufacturing a butterfly-shaped drop cable for pipelines as claimed in claim 4, wherein the flame retardant is one or two of decabromodiphenyl ethane or decabromodiphenyl ether, and the mixture is mixed in any proportion.
6. The process for producing a butterfly-shaped drop cable for a tube according to claim 4, wherein said vulcanizing agent is one or two of N-nitrosodiphenylamine or tetramethylthiuram disulfide mixed in an arbitrary ratio.
7. The process for manufacturing a butterfly-shaped drop cable for pipelines as claimed in claim 4, wherein the water-proofing agent is one or two of polyether glycol and asphalt mixed in any ratio.
8. The process for producing the butterfly-shaped drop cable for the pipeline as claimed in claim 1, wherein the working process of the core processing equipment is as follows:
firstly, one end of an optical fiber penetrates through a traction hole (201), sequentially penetrates through a coating groove (306) and a drying groove (407), is fixed with the outer surface of a winding roller (502), and is wound through a winding mechanism (5);
secondly, resin enters the coating ring (3071) through the feeding pipe (3073), the surface of the optical fiber is coated along a plurality of coating spray heads (3072), and the resin is recycled by the collecting chamber (308);
and thirdly, starting an exhaust fan (402) to suck external air into a drying chamber (404) through a connecting pipe (403), heating the air through an electric heating rod (405), and spraying the air from an air outlet (406) to dry and solidify the coated optical fiber.
9. A butterfly-shaped drop cable for a pipeline, characterized in that the butterfly-shaped drop cable for a pipeline is produced by the production process of a butterfly-shaped drop cable for a pipeline according to claim 1.
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