CN115047572A - Multi-core optical cable with flame retardant property - Google Patents
Multi-core optical cable with flame retardant property Download PDFInfo
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- CN115047572A CN115047572A CN202210505346.1A CN202210505346A CN115047572A CN 115047572 A CN115047572 A CN 115047572A CN 202210505346 A CN202210505346 A CN 202210505346A CN 115047572 A CN115047572 A CN 115047572A
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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
- G02B6/4401—Optical cables
- G02B6/4429—Means specially adapted for strengthening or protecting the cables
- G02B6/4436—Heat resistant
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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
- G02B6/4401—Optical cables
- G02B6/4429—Means specially adapted for strengthening or protecting the cables
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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
- G02B6/4401—Optical cables
- G02B6/4429—Means specially adapted for strengthening or protecting the cables
- G02B6/443—Protective covering
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
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- Optics & Photonics (AREA)
- Surface Treatment Of Glass Fibres Or Filaments (AREA)
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Abstract
The invention discloses a multi-core optical cable with flame retardant property, which belongs to the technical field of optical cables and comprises a plurality of cable cores, wherein a filling rope layer is wrapped outside the cable cores, a non-woven fabric layer is fixedly wrapped outside the filling rope layer, an armor layer is fixedly wrapped outside the non-woven fabric layer, a flame retardant layer and a heat insulating layer are arranged outside the armor layer in a coating and shaping mode through an integral forming machine, the flame retardant layer is fixedly attached to the outer wall of the armor layer, and the heat insulating layer is fixedly attached to the outer wall of the flame retardant layer. A plurality of cable cores and packing rope layer pass through the non-woven fabrics layer parcel fixed to the winding is fixed to be set up the armor, improves the intensity of optical cable, forms fire-retardant layer and insulating layer through integrated into one piece machine one-shot processing, makes fire-retardant layer and insulating layer thickness of each position of optical cable even, improves fire-retardant heat-proof quality, guarantees optical cable performance intensity.
Description
Technical Field
The invention relates to the technical field of optical cables, in particular to a multi-core optical cable with flame retardant property.
Background
The optical cable is manufactured to meet the performance specification of optics, machinery or environment, and the optical cable uses one or more optical fibers in a coating sheath as transmission media and can be used individually or in groups.
Disclosure of Invention
The present invention is directed to a multi-core optical cable with flame retardant properties to solve the above problems in the background art.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a multicore optical cable with fire-retardant characteristic, includes a plurality of cable cores, and the outside parcel of a plurality of cable cores is equipped with the filler rope layer, the fixed parcel in the outside on filler rope layer has the non-woven fabrics layer, the fixed parcel in the outside on non-woven fabrics layer is equipped with the armor, the outside of armor is stereotyped through the integrated into one piece machine application and is equipped with fire-retardant layer and insulating layer, and the outer wall of the fixed laminating armor of fire-retardant layer, the outer wall of the fixed laminating fire-retardant layer of insulating layer.
In an embodiment, the armor layer is a fine round wire mesh belt spirally wound and fixed on the outer wall of the circumference of the non-woven fabric layer, and the flame-retardant layer is a low-smoke halogen-free flame-retardant polyolefin resin layer, and comprises the following raw materials in parts by weight: 200-250 parts of polyolefin resin, 20-30 parts of phosphorus flame retardant, 5-10 parts of plasticizer and 10-15 parts of auxiliary agent;
the heat insulation layer is a ceramic polystyrene resin layer and comprises the following raw materials in parts by weight: 350 parts of polystyrene, 100 parts of polyethylene, 150 parts of ceramic powder, 40-50 parts of phosphorus flame retardant, 15-20 parts of compatilizer and 10-15 parts of auxiliary agent.
An embodiment of preferred, integrated into one piece machine includes the shaping case, the through-hole that has the business turn over material is opened at the both ends of shaping case, the one end terminal surface of shaping case rotates installs two guide rolls, the other end outer wall fixed mounting of shaping case has the frame, install drive mechanism in the frame, the inner chamber of shaping case is equipped with two coating mechanism, coating mechanism is close to the equal fixed mounting in the shaping incasement of drive mechanism's one end has a cartridge heater, drive mechanism and feed mechanism are installed respectively to the both sides of shaping case, drive mechanism and feed mechanism all connect drive mechanism and coating mechanism.
In a preferred embodiment, the traction mechanism comprises a driving roller and an auxiliary roller, two driving rollers are rotatably mounted on one side of the frame close to the forming box, a rotating shaft of one driving roller is fixedly connected with an output shaft of a motor, and the motor is fixedly arranged on the frame, a gear which is engaged with the rotating shaft of the two driving rollers is arranged between the rotating shafts of the two driving rollers, two auxiliary rollers are arranged on the other side of the frame, rotating shafts of the two auxiliary rollers rotatably penetrate through the sliding block, the frame is provided with a sliding chute, the sliding block is clamped in the sliding chute in a sliding way, two sides of the sliding block are fixedly provided with fixing plates, the outer walls of the machine frames on two sides of the sliding groove are provided with fixing holes, the fixing plates are sleeved with locking bolts, the rotating shafts of the two auxiliary rollers are respectively sleeved with a transmission belt between the rotating shafts of the two driving rollers, and the rotating shafts of the driving rollers are connected with a transmission mechanism and a feeding mechanism.
An embodiment of preferred, be equipped with on the circumference outer wall of drive roll with the arc wall of thermal-insulated layer outer wall adaptation, be equipped with on auxiliary roll and the guide roll with the arc wall of armor outer wall adaptation, slider and spout are the arc structure, and the axis of slider and spout coincides with the pivot axis of drive roll, the through-hole axis symmetric distribution at drive roll, auxiliary roll and guide roll all along the shaping case both ends.
An embodiment of preferred, coating mechanism includes the solid fixed cylinder, the inner chamber top of connecting rod fixed connection shaping case is passed through at the top of solid fixed cylinder, the solid fixed cylinder internal rotation has been cup jointed and has been rotated the section of thick bamboo, the circumference outer wall of a section of thick bamboo is fixed and is equipped with the spacing ring, the terminal surface of the solid fixed cylinder of the closely laminating of spacing ring, the one end outer wall connection drive mechanism who rotates the section of thick bamboo, the inside branch silo that has opened of one end of a section of thick bamboo, it has a plurality of discharge openings to divide the silo to open between the inner wall of a section of thick bamboo and a rotation section of thick bamboo, the inner wall of a solid fixed cylinder is opened there is the annular, divide the rotation section of thick bamboo outer wall between silo and annular to open and have a plurality of feed openings, feed mechanism is connected to the solid fixed cylinder of annular department.
In an embodiment of the present invention, the inner diameter of the rotating cylinder close to the guide roller is equal to the outer diameter of the flame retardant layer, the inner diameter of the rotating cylinder close to the frame is equal to the outer diameter of the heat insulating layer, the feeding hole and the discharging hole are uniformly distributed along the circumferential direction of the rotating cylinder, the axes of the rotating cylinder and the heating cylinder are overlapped with the axes of the through holes at the two ends of the forming box, and the inner wall of the heating cylinder is uniformly and fixedly provided with the infrared heating rod.
Preferably, the transmission mechanism comprises transmission shafts, the two transmission shafts are rotatably sleeved in the forming box at the bottom of the rotating cylinder, worms are fixedly mounted on the transmission shafts, worm gear rings are fixedly sleeved on the outer wall of one end of each of the two rotating cylinders and meshed with the worms, a transmission belt is sleeved between one ends of the two transmission shafts, and one end of one transmission shaft is connected with a rotating shaft of the driving roller through the transmission belt.
In a preferred embodiment, the feeding mechanism comprises guide rail plates, two guide rail plates are fixedly installed on the outer wall of the forming box, a sliding frame is clamped between the two guide rail plates in a sliding manner, racks are fixedly arranged on the inner walls of the two sides of the sliding frame, the outer wall of the forming box is rotatably sleeved with a driven shaft, one end of the driven shaft, which is far away from the forming box, is connected with a rotating shaft of the driving roller through a transmission belt, a half gear is fixedly sleeved on the driven shaft, the semi-gear is engaged with the rack, two pump cylinders are fixedly arranged on the outer wall of the forming box, pistons are slidably clamped in the two pump cylinders, a push rod penetrates between the two pump cylinders in a sliding manner, piston fixed connection push rod, the outer wall of the one end fixed connection sliding frame of push rod, the both ends of pump cylinder are connected with inhales material pipe and discharging pipe, the discharging pipe runs through shaping case and solid fixed cylinder and connects the annular.
In a preferred embodiment, the cross-sectional areas between the two pump cylinders and the push rod are respectively equal to the cross-sectional areas of the flame-retardant layer and the heat-insulating layer, and one ends of the material suction pipe and the material discharge pipe close to the pump cylinders are respectively provided with a one-way valve.
The invention has the beneficial effects that:
a plurality of cable cores and packing rope layer pass through the non-woven fabrics layer parcel fixed to the winding is fixed to be set up the armor, improves the intensity of optical cable, forms fire-retardant layer and insulating layer through integrated into one piece machine one-shot processing, makes fire-retardant layer and insulating layer thickness of each position of optical cable even, improves fire-retardant heat-proof quality, guarantees optical cable performance intensity.
Drawings
Fig. 1 is a schematic structural diagram of a multi-core optical cable with flame retardant characteristics according to an embodiment of the present invention.
Fig. 2 is a schematic structural view of an integral molding machine for processing the optical cable of the invention.
FIG. 3 is an enlarged view of the structure at A in FIG. 2 according to the present invention.
FIG. 4 is an enlarged view of the structure at B in FIG. 2 according to the present invention.
FIG. 5 is a schematic cross-sectional view of the coating mechanism of the present invention.
FIG. 6 is a schematic view of a partial cross-sectional structure of a feeding mechanism according to the present invention.
FIG. 7 is an enlarged view of the structure of FIG. 6 at C according to the present invention.
In the figure: 10. a cable core; 20. filling a rope layer; 30. a non-woven fabric layer; 40. an armor layer; 50. a flame retardant layer; 60. a thermal insulation layer; 1. forming a box; 2. a guide roller; 3. a frame; 4. a traction mechanism; 41. a drive roll; 42. an auxiliary roller; 43. a motor; 44. a gear; 45. a chute; 46. a slider; 47. a fixing plate; 48. a fixing hole; 5. a coating mechanism; 51. a fixed cylinder; 52. a rotating cylinder; 53. a limiting ring; 54. a ring groove; 55. a material distributing groove; 56. a feed port; 57. a discharge hole; 6. a transmission mechanism; 61. a drive shaft; 62. a worm; 63. a worm gear ring; 7. a feeding mechanism; 71. a guide rail plate; 72. a sliding frame; 73. a driven shaft; 74. a half gear; 75. a rack; 76. a pump cylinder; 77. a piston; 78. a push rod; 8. and heating the cylinder.
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.
Example (b): as shown in fig. 1 to 7, the invention provides a multi-core optical cable with flame retardant property, which includes a plurality of cable cores 10, a filler rope layer 20 is wrapped outside the plurality of cable cores 10, a non-woven fabric layer 30 is fixedly wrapped outside the filler rope layer 20, an armor layer 40 is fixedly wrapped outside the non-woven fabric layer 30, a flame retardant layer 50 and a thermal insulation layer 60 are arranged outside the armor layer 40 through coating and shaping by an integral forming machine, the flame retardant layer 50 is fixedly attached to the outer wall of the armor layer 40, and the thermal insulation layer 60 is fixedly attached to the outer wall of the flame retardant layer 50. A plurality of cable cores 10 and filling rope layer 20 are fixed through non-woven fabrics layer 30 parcel to the winding is fixed to be set up armor 40, improves the intensity of optical cable, forms fire-retardant layer 50 and insulating layer 60 through integrated into one piece machine one-shot processing, makes fire-retardant layer 50 and insulating layer 60 thickness of each position of optical cable even, improves fire-retardant heat-proof quality, guarantees optical cable performance intensity.
Further, armor 40 is the thin round wire guipure that the spiral winding was fixed at non-woven fabrics layer 30 circumference outer wall, and fire-retardant layer 50 is the fire-retardant polyolefin resin layer of low smoke and zero halogen, according to parts by weight, and its raw materials composition includes: 230 parts of polyolefin resin, 25 parts of phosphorus flame retardant, 7 parts of plasticizer and 13 parts of auxiliary agent; the heat insulation layer 60 is a ceramic polystyrene resin layer and comprises the following raw materials in parts by weight: 330 parts of polystyrene, 125 parts of polyethylene, 45 parts of ceramic powder, 45 parts of phosphorus flame retardant, 17 parts of compatilizer and 13 parts of auxiliary agent.
Further, the auxiliary agent comprises a coupling agent, a lubricant and an antioxidant, and the raw materials of the flame-retardant layer 50 and the heat-insulating layer 60 are mixed, heated and melted in a reaction kettle for later use.
Further, integrated into one piece machine includes forming box 1, the through-hole that has the business turn over material is opened at forming box 1's both ends, forming box 1's one end terminal surface rotates installs two guide rolls 2, forming box 1's other end outer wall fixed mounting has frame 3, install drive mechanism 4 on the frame 3, forming box 1's inner chamber is equipped with two coating machine and constructs 5, equal fixed mounting has cartridge heater 8 in the forming box 1 that coating machine constructs 5 and is close to drive mechanism 4's one end, drive mechanism 6 and feed mechanism 7 are installed respectively to forming box 1's both sides, drive mechanism 6 and feed mechanism 7 all connect drive mechanism 4 and coating machine and construct 5. Through guide roll 2 and drive mechanism 4 semi-manufactured goods optical cable after to armor 40 processing stably pull, make semi-manufactured goods optical cable pass through two coating mechanism 5 and cartridge heater 8 in proper order, and drive mechanism 6 and feed mechanism are linked when drive mechanism 4 pulls, thereby in passing through feed mechanism 7 evenly supplying coating mechanism 5 with the melting raw materials of fire-retardant layer 50 and insulating layer 60, drive mechanism 6 drives coating mechanism 5 in step and rotates, the realization evenly coats the raw materials on the optical cable, guarantee that each part thickness is even, realize one shot forming after 8 heated setting of cartridge heater, improve machining efficiency and practice thrift the place.
Further, the top or the side wall of the forming box 1 can be provided with a plurality of opening and closing doors and observation windows, so that the forming effect of the optical cable flame-retardant layer 50 and the heat-insulating layer 60 can be conveniently and timely checked.
Further, the traction mechanism 4 comprises a driving roller 41 and an auxiliary roller 42, two driving rollers 41 are rotatably mounted on one side of the frame 3 close to the forming box 1, a rotating shaft of one driving roller 41 is fixedly connected with an output shaft of a motor 43, the motor 43 is fixedly mounted on the frame 3, a gear 44 meshed with the rotating shafts of the two driving rollers 41 is mounted between the rotating shafts, two auxiliary rollers 42 are arranged on the other side of the frame 3, the rotating shafts of the two auxiliary rollers 42 both rotatably penetrate through a sliding block 46, a sliding groove 45 is formed in the frame 3, the sliding block 46 is slidably clamped in the sliding groove 45, fixing plates 47 are fixedly mounted on two sides of the sliding block 46, fixing holes 48 are formed in the outer wall of the frame 3 on two sides of the sliding groove 45, locking bolts are sleeved on the fixing plates 47, driving belts are respectively sleeved between the rotating shafts of the two auxiliary rollers 42 and the rotating shafts of the two driving rollers 41, the rotating shafts of the driving rollers 41 are connected with a transmission mechanism 6 and a feeding mechanism 7, an arc-shaped groove matched with the outer wall of the circumference of the driving roller 41, the auxiliary roller 42 and the guide roller 2 are provided with arc grooves matched with the outer wall of the armor layer 40, the sliding block 46 and the sliding groove 45 are both arc structures, the axes of the sliding block 46 and the sliding groove 45 are coincident with the axis of a rotating shaft of the driving roller 41, the auxiliary roller 42 and the guide roller 2 are symmetrically distributed along the axes of through holes at two ends of the forming box 1, a semi-finished optical cable processed by the armor layer 40 penetrates through the forming box 1 and then penetrates through the space between the driving rollers 41, at the moment, the driving roller 41 can not contact with the semi-finished optical cable, at the moment, the sliding block 46 slides along the sliding groove 45, so that the auxiliary roller 42 contacts with the armor layer 40, the fixing plate 47 is connected with the fixing hole 48 through a bolt, when the optical cable is initially fed, the driving roller 41 rotates but does not contact with the optical cable, the auxiliary roller 42 rotates through a driving belt to drive the semi-finished optical cable 40 to move, so as to realize initial traction, when the optical cable is gradually processed so that the finished optical cable moves to the space between the driving roller 41, at this time, the sliding block 46 slides to enable the auxiliary roller 42 to be far away from the optical cable and fixed, so that the finished optical cable is pulled by directly contacting the outer wall of the heat insulation layer 60 through the driving roller 41, and the continuous processing requirement is met.
Further, the coating mechanism 5 comprises a fixed cylinder 51, the top of the fixed cylinder 51 is fixedly connected with the top of the inner cavity of the forming box 1 through a connecting rod, a rotating cylinder 52 is rotatably sleeved in the fixed cylinder 51, a limiting ring 53 is fixedly arranged on the circumferential outer wall of the rotating cylinder 52, the limiting ring 53 is tightly attached to the end surface of the fixed cylinder 51, the outer wall of one end of the rotating cylinder 52 is connected with a transmission mechanism 6, a material distributing groove 55 is formed in one end of the rotating cylinder 52, a plurality of discharging holes 57 are formed between the material distributing groove 55 and the inner wall of the rotating cylinder 52, a circular groove 54 is formed in the inner wall of the fixed cylinder 51, a plurality of feeding holes 56 are formed in the outer wall of the rotating cylinder 52 between the material distributing groove 55 and the circular groove 54, the fixed cylinder 51 at the circular groove 54 is connected with a feeding mechanism 7, the inner diameter of the rotating cylinder 52 close to the guide roller 2 is equal to the outer diameter of the flame-retardant layer 50, the inner diameter of the rotating cylinder 52 close to the rack 3 is equal to the outer diameter of the heat-insulating layer 60, the feeding holes 56 and the discharging holes 57 are uniformly distributed along the circumferential direction of the rotating cylinder 52, the axis of a section of thick bamboo 52 and a heating cylinder 8 and the coincidence of the through-hole axis at shaping case 1 both ends rotate, the inner wall of a heating cylinder 8 is evenly fixed and is equipped with the infrared heating stick, drive mechanism 6 includes transmission shaft 61, it cup joints transmission shaft 61 all to rotate in the shaping case 1 of two section of thick bamboos 52 bottoms, equal fixed mounting has worm 62 on the transmission shaft 61, two one end outer walls that rotate a section of thick bamboo 52 all have fixed the cup jointed worm gear ring 63, worm gear ring 63 meshes worm 62, the cover has been met the drive belt between the one end of two transmission shafts 61, the pivot of drive roll 41 is connected through the drive belt to the one end of a transmission shaft 61.
Further, the feeding mechanism 7 includes guide rail plates 71, two guide rail plates 71 are fixedly installed on the outer wall of the forming box 1, a sliding frame 72 is connected between the two guide rail plates 71 in a sliding clamping manner, racks 75 are fixedly installed on the inner walls of two sides of the sliding frame 72, a driven shaft 73 is sleeved on the outer wall of the forming box 1 in a rotating manner, one end, far away from the forming box 1, of the driven shaft 73 is connected with a rotating shaft of the driving roller 41 through a transmission belt, a half gear 74 is fixedly sleeved on the driven shaft 73, the half gear 74 is meshed with the racks 75, two pump cylinders 76 are fixedly installed on the outer wall of the forming box 1, pistons 77 are clamped in the two pump cylinders 76 in a sliding manner, a push rod 78 is penetrated between the two pump cylinders 76 in a sliding manner, the push rod 78 is fixedly connected with one end of the push rod 78, the outer wall of the sliding frame 72 is fixedly connected with material suction pipes and discharge pipes at two ends of the pump cylinders 76, the discharge pipes penetrate through the forming box 1 and the fixed cylinder 51 and are connected with the annular groove 54, and the cross-sectional areas between the two pump cylinders 76 are respectively equal to the cross-sectional areas of the flame-retardant layer 50 and the heat-insulating layer 60 One ends of the material suction pipe and the material discharge pipe close to the pump cylinder 76 are provided with one-way valves.
The drive roll 41 is linked with the transmission mechanism 6, the feeding mechanism 7 and the coating mechanism 5 when rotating, the concrete process is that when the drive roll 41 pulls the optical cable to move, the driven shaft 73 is driven to continuously rotate through a transmission belt, the half gear 74 continuously rotates, the half gear 74 alternately engages with the racks 75 on two sides of the sliding frame 72, so as to drive the sliding frame 72 to slide back and forth, the push rod 78 drives the piston 77 to move back and forth along the pump cylinder 76, so as to pump the melted raw material into the pump cylinder 76 through the suction pipe and into the annular grooves 54 through the discharge pipe, the melted raw materials of the flame-retardant layer 50 and the heat-insulating layer 60 respectively enter the two annular grooves 54, are extruded into the material distribution groove 55 through the feed hole 56 and are evenly extruded onto the optical cable through the plurality of discharge holes 57, meanwhile, the rotating shaft of the drive roll 41 also drives the transmission shaft 61 to rotate through the transmission belt, the transmission shaft 61 drives the worm 62 to rotate, the worm 62 drives the worm wheel ring 63 to rotate, thereby, the rotating cylinder 52 rotates, the discharge hole 57 on the inner wall of one side of the rotating cylinder 52 uniformly coats the molten raw material on the optical cable in the rotation, when the optical cable is pulled out of the rotating cylinder 52, the solid inner wall of the rotating cylinder 52 compacts and smoothes the raw material, so that the flame retardant layer 50 and the heat insulation layer 60 are uniformly coated, the movement amount of the piston 77 is synchronous with the rotation of the driving roller 41, the rotation of the transmission shaft 61 is synchronous with the driving roller 41, the raw material amount pumped into the rotating cylinder 52 is synchronous with the movement amount of the optical cable, meanwhile, the rotation of the rotating cylinder 52 is synchronous with the movement amount of the optical cable, the uniform thickness of the flame retardant layer 50 and the heat insulation layer 60 in the axial direction and the radial direction is kept, and the high flame retardance of each optical cable is realized.
When the cable is used, the plurality of cable cores 10 and the filling rope layer 20 are wrapped and fixed through the non-woven fabric layer 30, the armor layer 40 is wound and fixed, the strength of the optical cable is improved, after the armor layer 40 is wrapped, the optical cable passes through the forming box 1, at the moment, the driving roller 41 cannot contact with the semi-finished optical cable, at the moment, the sliding block 46 slides along the sliding groove 45, the auxiliary roller 42 is enabled to contact with the armor layer 40, the fixing plate 47 is connected with the fixing hole 48 through the bolt, when the optical cable is initially fed, the driving roller 41 rotates but does not contact with the optical cable, the auxiliary roller 42 rotates through the transmission belt to drive the semi-finished optical cable of the armor layer 40 to move, initial traction is achieved, when the driving roller 41 pulls the optical cable to move, the driven shaft 73 is driven through the transmission belt to continuously rotate, the half gear 74 continuously rotates, the half gear 74 alternately engages with the racks 75 on two sides of the sliding frame 72, so as to drive the sliding frame 72 to slide in a reciprocating mode, the push rod 78 drives the piston 77 to move in a reciprocating mode along the pump cylinder 76, thereby, the melted raw materials are pumped into the pump cylinder 76 through the material suction pipe and are pumped into the ring grooves 54 through the material discharge pipe, the melted raw materials of the flame retardant layer 50 and the heat insulation layer 60 respectively enter the two ring grooves 54, are extruded into the material distribution groove 55 through the material inlet hole 56 and are evenly extruded onto the optical cable through the plurality of material outlet holes 57, meanwhile, the rotating shaft of the driving roller 41 also drives the transmission shaft 61 to rotate through the transmission belt, the transmission shaft 61 drives the worm 62 to rotate, the worm 62 drives the worm wheel ring 63 to rotate, so that the rotating cylinder 52 rotates, the material outlet holes 57 on the inner wall of one side of the rotating cylinder 52 evenly coat the melted raw materials on the optical cable in the rotating process, and when the optical cable is pulled out of the rotating cylinder 52, the solid inner wall of the rotating cylinder 52 compacts and smoothes the raw materials, so that the coating of the flame retardant layer 50 and the heat insulation layer 60 is even, moreover, the piston 77 is synchronous with the rotation of the driving roller 41, and the rotation of the transmission shaft 61 is synchronous with the driving roller 41, the raw material amount pumped into the rotating cylinder 52 is synchronous with the moving amount of the optical cable, meanwhile, the rotation of the rotating cylinder 52 is also synchronous with the moving amount of the optical cable, the axial and radial uniform thickness of the flame-retardant layer 50 and the heat-insulating layer 60 is realized, the heating cylinder 8 is heated and shaped after coating, the high flame retardance of each part of the optical cable is realized, the flame-retardant layer 50 and the heat-insulating layer 60 move to the driving roller 41 after processing, the sliding block 46 slides to enable the auxiliary roller 42 to be far away from the optical cable and fixed at the moment, thereby the finished optical cable is pulled by directly contacting the outer wall of the heat-insulating layer 60 through the driving roller 41, the continuous processing requirement is met, the efficiency is improved through integrated processing, the site is saved, the high-efficiency flame-retardant property of each part of the optical cable is ensured by the flame-retardant layer 50 and the heat-insulating layer 60 with uniform thickness, and the quality of the optical cable is improved.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. A multi-core optical cable having flame retardant properties, comprising a plurality of cable cores (10), characterized in that: the outside parcel of a plurality of cable cores (10) is equipped with filler rope layer (20), the fixed parcel in the outside of filler rope layer (20) has non-woven fabrics layer (30), the fixed parcel in the outside of non-woven fabrics layer (30) is equipped with armor (40), the outside of armor (40) is fixed through the make-up machine application and is equipped with fire-retardant layer (50) and insulating layer (60), and the outer wall of the fixed laminating armor (40) of fire-retardant layer (50), the outer wall of the fixed laminating fire-retardant layer (50) of insulating layer (60).
2. A multi-core optical cable having flame retardant properties as claimed in claim 1, wherein: armor (40) are the thin round wire net area that spiral winding fixed at non-woven fabrics layer (30) circumference outer wall, fire-retardant layer (50) are low smoke and zero halogen fire-retardant polyolefin resin layer, and its raw materials composition includes according to the part by weight: 200-250 parts of polyolefin resin, 20-30 parts of phosphorus flame retardant, 5-10 parts of plasticizer and 10-15 parts of auxiliary agent;
the heat insulation layer (60) is a ceramic polystyrene resin layer and comprises the following raw materials in parts by weight: 350 parts of polystyrene, 100 parts of polyethylene, 150 parts of ceramic powder, 40-50 parts of phosphorus flame retardant, 15-20 parts of compatilizer and 10-15 parts of auxiliary agent.
3. A multi-core optical cable having flame retardant properties as claimed in claim 1, wherein: the integrated into one piece machine is including forming box (1), the through-hole that has the business turn over material is opened at the both ends of forming box (1), the one end terminal surface of forming box (1) rotates and installs two guide roll (2), the other end outer wall fixed mounting who forms box (1) has frame (3), install drive mechanism (4) on frame (3), the inner chamber of forming box (1) is equipped with two coating machine structure (5), equal fixed mounting has cartridge heater (8) in forming box (1) that coating machine structure (5) are close to the one end of drive mechanism (4), drive mechanism (6) and feed mechanism (7) are installed respectively to the both sides of forming box (1), drive mechanism (6) and feed mechanism (7) are all connected drive mechanism (4) and coating machine structure (5).
4. A multi-core optical cable having flame retardant properties as claimed in claim 3, wherein: traction mechanism (4) includes drive roll (41) and auxiliary roller (42), frame (3) are close to one side rotation that becomes case (1) and install two drive rolls (41), one the output shaft of pivot fixed connection motor (43) of drive roll (41), and motor (43) fixed mounting is in frame (3), two install engaged with gear (44) between the pivot of drive roll (41), the opposite side of frame (3) is equipped with two auxiliary roller (42), two the pivot of auxiliary roller (42) all rotates and runs through slider (46), it has spout (45) to open on frame (3), slider (46) slip joint is in spout (45), the both sides fixed mounting of slider (46) has fixed plate (47), it has fixed orifices (48) to open on the frame (3) outer wall of spout (45) both sides, and a locking bolt is sleeved on the fixing plate (47), a transmission belt is sleeved between the rotating shafts of the two auxiliary rollers (42) and the rotating shafts of the two driving rollers (41), and the rotating shafts of the driving rollers (41) are connected with the transmission mechanism (6) and the feeding mechanism (7).
5. A multi-core optical cable having flame retardant properties as claimed in claim 4, wherein: be equipped with the arc wall with insulating layer (60) outer wall looks adaptation on the circumference outer wall of drive roll (41), be equipped with the arc wall with armor (40) outer wall looks adaptation on auxiliary roll (42) and guide roll (2), slider (46) and spout (45) are the arc structure, and the axis of slider (46) and spout (45) coincides with the pivot axis of drive roll (41), auxiliary roll (42) and guide roll (2) are all along the through-hole axis symmetric distribution at shaping case (1) both ends.
6. A multi-core optical cable having flame retardant properties as claimed in claim 4, wherein: the coating mechanism (5) comprises a fixed cylinder (51), the top of the fixed cylinder (51) is fixedly connected with the top of the inner cavity of the forming box (1) through a connecting rod, a rotating cylinder (52) is rotationally sleeved in the fixed cylinder (51), a limiting ring (53) is fixedly arranged on the outer circumferential wall of the rotating cylinder (52), the limiting ring (53) is tightly attached to the end surface of the fixed cylinder (51), the outer wall of one end of the rotating cylinder (52) is connected with the transmission mechanism (6), a material distributing groove (55) is formed in one end of the rotating cylinder (52), a plurality of discharging holes (57) are formed between the material distributing groove (55) and the inner wall of the rotating cylinder (52), the inner wall of the fixed cylinder (51) is provided with a ring groove (54), the outer wall of the rotating cylinder (52) between the material distribution groove (55) and the ring groove (54) is provided with a plurality of feeding holes (56), the fixed cylinder (51) at the ring groove (54) is connected with the feeding mechanism (7).
7. The multi-core optical cable having flame retardant properties of claim 6, wherein: be close to a rotation section of thick bamboo (52) internal diameter of guide roll (2) equals the external diameter of fire-retardant layer (50), is close to a rotation section of thick bamboo (52) internal diameter of frame (3) equals the external diameter of insulating layer (60), charging hole (56) and discharge opening (57) all follow the circumferencial direction evenly distributed who rotates a section of thick bamboo (52), the axis that rotates a section of thick bamboo (52) and heating cylinder (8) coincides with the through-hole axis at shaping case (1) both ends, the inner wall of heating cylinder (8) is fixed evenly and is equipped with the infrared heating rod.
8. The multi-core optical cable having flame retardant properties of claim 6, wherein: drive mechanism (6) include transmission shaft (61), two all rotate in the shaping case (1) of a rotation section of thick bamboo (52) bottom and cup joint transmission shaft (61), equal fixed mounting has worm (62) on transmission shaft (61), two the one end outer wall of a rotation section of thick bamboo (52) all fixed cover has been connected worm wheel ring (63), worm wheel ring (63) meshing worm (62), two the cover has been connected with the drive belt between the one end of transmission shaft (61), one the pivot of drive roll (41) is passed through to the one end of transmission shaft (61).
9. The multi-core optical cable having flame retardant properties of claim 6, wherein: feeding mechanism (7) is including guide rail board (71), two guide rail board (71) of outer wall fixed mounting of forming box (1), two slide clamping has sliding frame (72) between guide rail board (71), the equal fixed mounting in both sides inner wall of sliding frame (72) has rack (75), the outer wall of forming box (1) rotates and has cup jointed driven shaft (73), the pivot of driving roll (41) is passed through the drive belt to the one end that forming box (1) was kept away from in driven shaft (73), fixed cup joint half gear (74) on driven shaft (73), half gear (74) meshing rack (75), the outer wall fixed mounting of forming box (1) has two pump cylinder (76), two equal sliding joint has piston (77), two in pump cylinder (76) the pump runs through sliding rod (78) between cylinder (76), piston (77) fixed connection push rod (78), the outer wall of one end fixed connection sliding frame (72) of push rod (78), the both ends of pump cylinder (76) are connected with inhales material pipe and discharging pipe, the discharging pipe runs through shaping case (1) and solid fixed cylinder (51) and is connected annular (54).
10. A multi-core optical cable having flame retardant properties as claimed in claim 9, wherein: the cross sectional area between the two pump cylinders (76) and the push rod (78) is respectively equal to the cross sectional areas of the flame-retardant layer (50) and the heat-insulating layer (60), and one ends of the material suction pipe and the material discharge pipe, which are close to the pump cylinders (76), are respectively provided with a one-way valve.
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| CN202210505346.1A CN115047572B (en) | 2022-05-10 | 2022-05-10 | Multi-core optical cable with flame retardant property |
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| CN115047572B (en) | 2023-08-15 |
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