CN115047572B - Multi-core optical cable with flame retardant property - Google Patents
Multi-core optical cable with flame retardant property Download PDFInfo
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- CN115047572B CN115047572B CN202210505346.1A CN202210505346A CN115047572B CN 115047572 B CN115047572 B CN 115047572B CN 202210505346 A CN202210505346 A CN 202210505346A CN 115047572 B CN115047572 B CN 115047572B
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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
-
- 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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- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Insulated Conductors (AREA)
- Surface Treatment Of Glass Fibres Or Filaments (AREA)
Abstract
The invention discloses a multi-core optical cable with flame retardant property, which belongs to the technical field of optical cables. The cable cores and the filling rope layers are wrapped and fixed through the non-woven fabric layers, the armor layers are fixedly arranged in a winding mode, the strength of the optical cable is improved, the flame-retardant layers and the heat-insulating layers are formed through one-time processing of the integrated forming machine, the flame-retardant layers and the heat-insulating layers at all parts of the optical cable are uniform in thickness, the flame-retardant heat-insulating performance is improved, and the performance strength of the optical cable is guaranteed.
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 specifications of optics, machinery or environment, and is a communication cable assembly which uses one or more optical fibers arranged in a coating sheath as a transmission medium and can be used singly or in groups, the existing optical cable sheath is a simple plastic sheath, the flame retardance is poor, and the optical cable sheath is respectively extruded and molded during processing, so that the thickness of the optical cable sheath is difficult to ensure the same everywhere, and the local performance of the optical cable is easy to be reduced.
Disclosure of Invention
The present invention is directed to a multi-core optical cable with flame retardant properties, which solves the problems set forth in the background art.
In order to achieve the above purpose, the present invention provides the following technical solutions: 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 filling rope layer, the fixed parcel in outside on filling rope layer has the non-woven fabrics layer, the fixed parcel in outside on non-woven fabrics layer is equipped with the armor, the outside on armor is equipped with fire-retardant layer and insulating layer through integrated into one piece machine application design, 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 a preferred embodiment, the armor layer is a thin round wire mesh belt spirally wound and fixed on the circumferential outer wall of the non-woven fabric layer, the flame-retardant layer is a low-smoke halogen-free flame-retardant polyolefin resin layer, and the raw materials comprise, 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: 300-350 parts of polystyrene, 100-150 parts of polyethylene, 40-50 parts of ceramic powder, 40-50 parts of phosphorus flame retardant, 15-20 parts of compatilizer and 10-15 parts of auxiliary agent.
The preferred embodiment case, the integrated into one piece machine includes the shaping case, the through-hole of business turn over material is opened at the both ends of shaping case, two guide rolls are installed in the rotation of the one end terminal surface of shaping case, the other end outer wall fixed mounting of shaping case has the frame, install traction mechanism in the frame, the inner chamber of shaping case is equipped with two application mechanisms, equal fixed mounting has the heating cylinder in the shaping case that the application mechanism is close to traction mechanism's one end, drive mechanism and feeding mechanism are installed respectively to the both sides of shaping case, traction mechanism and application mechanism are all connected to drive mechanism and feeding mechanism.
The preferred embodiment, the traction mechanism includes drive roll and auxiliary roll, one side that the frame is close to the shaping case rotates and installs two drive rolls, one the pivot fixed connection motor's of drive roll output shaft, and motor fixed mounting is in the frame, two install the gear that meshes between the pivot of drive roll, the opposite side of frame is equipped with two auxiliary rolls, two the pivot of auxiliary roll is all rotated and is run through the slider, it has the spout to open in the frame, slider sliding joint is in the spout, the both sides fixed mounting of slider has the fixed plate, it has the fixed orifices to open on the frame outer wall of spout both sides, the locking bolt has been cup jointed on the fixed plate, two the pivot of auxiliary roll cup joints the drive belt with the pivot of two drive rolls respectively, drive mechanism and feeding mechanism are connected to the pivot of drive roll.
In a preferred embodiment, the circumference outer wall of the driving roller is provided with an arc-shaped groove matched with the outer wall of the heat insulation layer, the auxiliary roller and the guide roller are provided with arc-shaped grooves matched with the outer wall of the armor layer, the sliding block and the sliding chute are of arc-shaped structures, the axes of the sliding block and the sliding chute are coincident with the axis of the rotating shaft of the driving roller, and the driving roller, the auxiliary roller and the guide roller are symmetrically distributed along the axes of the through holes at two ends of the forming box.
The coating mechanism comprises a fixed cylinder, the top of the fixed cylinder is fixedly connected with the top of an inner cavity of a forming box through a connecting rod, a rotating cylinder is rotatably sleeved in the fixed cylinder, a limiting ring is fixedly arranged on the outer circumferential wall of the rotating cylinder, the limiting ring is tightly attached to the end face of the fixed cylinder, one end outer wall of the rotating cylinder is connected with a transmission mechanism, a material distributing groove is formed in one end of the rotating cylinder, a plurality of discharging holes are formed between the material distributing groove and the inner wall of the rotating cylinder, an annular groove is formed in the inner wall of the fixed cylinder, a plurality of feeding holes are formed in the outer wall of the rotating cylinder between the material distributing groove and the annular groove, and the fixed cylinder at the annular groove is connected with a feeding mechanism.
In a preferred embodiment, 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 insulation layer, the feeding holes and the discharging holes are uniformly distributed along the circumferential direction of the rotating cylinder, the axes of the rotating cylinder and the heating cylinder are coincident 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 an infrared heating rod.
In a preferred embodiment, the transmission mechanism comprises a transmission shaft, two transmission shafts are rotatably sleeved in forming boxes at the bottoms of the rotating cylinders, worms are fixedly installed on the transmission shafts, worm wheel rings are fixedly sleeved on the outer walls of one ends of the rotating cylinders, the worm wheel rings are meshed with the worms, a transmission belt is sleeved between one ends of the transmission shafts, and one end of the transmission shaft is connected with a rotating shaft of the driving roller through the transmission belt.
The preferred embodiment, feeding mechanism includes the guide rail board, two guide rail boards of outer wall fixed mounting of shaping case, two sliding joint has the slip frame between the guide rail board, the equal fixed mounting of both sides inner wall of slip frame has the rack, the outer wall rotation of shaping case has cup jointed the driven shaft, the driven shaft is kept away from the pivot of driving roll through the drive belt connection driving roll one end of shaping case, the fixed half gear that cup joints on the driven shaft, half gear engagement rack, the outer wall fixed mounting of shaping case has two pump cylinders, two equal sliding joint has the piston in the pump cylinder, two sliding run through has the push rod between the pump cylinder, piston fixed connection push rod, the outer wall of one end fixed connection slip frame of push rod, the both ends of pump cylinder are connected with suction pipe and discharging pipe, the discharging pipe runs through shaping case and fixed cylinder and connects the annular.
In a preferred implementation case, 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 insulation layer, and one ends of the suction pipe and the discharge pipe, which are close to the pump cylinders, are respectively provided with one-way valves.
The invention has the beneficial effects that:
the cable cores and the filling rope layers are wrapped and fixed through the non-woven fabric layers, the armor layers are fixedly arranged in a winding mode, the strength of the optical cable is improved, the flame-retardant layers and the heat-insulating layers are formed through one-time processing of the integrated forming machine, the flame-retardant layers and the heat-insulating layers at all parts of the optical cable are uniform in thickness, the flame-retardant heat-insulating performance is improved, and the performance strength of the optical cable is guaranteed.
Drawings
Fig. 1 is a schematic structural diagram of a multi-core optical cable with flame retardant property according to an embodiment of the present invention.
Fig. 2 is a schematic diagram of an integrated molding machine for processing an optical cable according to the present invention.
Fig. 3 is an enlarged schematic view of the structure of fig. 2 a according to the present invention.
Fig. 4 is an enlarged schematic view of the structure of fig. 2B according to the present invention.
FIG. 5 is a schematic view showing a sectional structure of a coating mechanism according to the present invention.
Fig. 6 is a schematic view of a partial cross-sectional structure of a feeding mechanism of 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. a forming 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 slide block; 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 dividing groove; 56. a feed hole; 57. a discharge hole; 6. a transmission mechanism; 61. a transmission 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 a heating cylinder.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Examples: as shown in fig. 1 to 7, the invention provides a multi-core optical cable with flame retardant property, which comprises a plurality of cable cores 10, wherein a filling rope layer 20 is wrapped on the outer sides of the cable cores 10, a non-woven fabric layer 30 is fixedly wrapped on the outer sides of the filling rope layer 20, an armor layer 40 is fixedly wrapped on the outer sides of the non-woven fabric layer 30, a flame retardant layer 50 and a heat insulation layer 60 are coated and shaped on the outer sides of the armor layer 40 through an integral forming machine, the flame retardant layer 50 is fixedly attached to the outer wall of the armor layer 40, and the heat insulation layer 60 is fixedly attached to the outer wall of the flame retardant layer 50. 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, the flame-retardant layer 50 and the heat-insulating layer 60 are formed through one-step processing of an integrated forming machine, the thickness of the flame-retardant layer 50 and the thickness of the heat-insulating layer 60 at each part of the optical cable are uniform, the flame-retardant heat-insulating performance is improved, and the performance strength of the optical cable is ensured.
Further, the armor layer 40 is a thin round wire mesh belt spirally wound and fixed on the circumferential outer wall of the non-woven fabric layer 30, the flame-retardant layer 50 is a low-smoke halogen-free flame-retardant polyolefin resin layer, and the raw materials comprise, by weight: 230 parts of polyolefin resin, 25 parts of phosphorus flame retardant, 7 parts of plasticizer and 13 parts of auxiliary agent; the heat insulating 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 by a reaction kettle for standby.
Further, the integrated into one piece machine includes shaping case 1, the through-hole of business turn over material is opened at shaping case 1's both ends, two guide rolls 2 are installed in shaping case 1's one end terminal surface rotation, shaping case 1's the other end outer wall fixed mounting has frame 3, install traction mechanism 4 on the frame 3, shaping case 1's inner chamber is equipped with two application mechanisms 5, equal fixed mounting has a heating cylinder 8 in shaping case 1 that application mechanism 5 is close to traction mechanism 4's one end, drive mechanism 6 and feeding mechanism 7 are installed respectively to shaping case 1's both sides, drive mechanism 6 and feeding mechanism 7 all connect traction mechanism 4 and application mechanism 5. The semi-finished optical cable after the armor 40 is processed is stably pulled through the guide roller 2 and the traction mechanism 4, the semi-finished optical cable sequentially passes through the two coating mechanisms 5 and the heating cylinder 8, and the traction mechanism 4 is in traction, the transmission mechanism 6 and the feeding mechanism are linked, so that the molten raw materials of the flame retardant layer 50 and the heat insulation layer 60 are uniformly fed into the coating mechanism 5 through the feeding mechanism 7, the transmission mechanism 6 synchronously drives the coating mechanism 5 to rotate, the raw materials are uniformly coated on the optical cable, the thickness uniformity of each part is ensured, one-time processing and forming are realized after the heating cylinder 8 is heated and shaped, the processing efficiency is improved, and the field is saved.
Further, a plurality of opening and closing doors and observation windows can be arranged on the top or the side wall of the molding box 1, so that the molding effect of the optical cable flame retardant layer 50 and the heat insulating layer 60 can be checked in time.
Further, the traction mechanism 4 comprises a driving roller 41 and an auxiliary roller 42, one side of the frame 3 close to the forming box 1 is rotatably provided with two driving rollers 41, the rotating shaft of one driving roller 41 is fixedly connected with the output shaft of a motor 43, the motor 43 is fixedly arranged on the frame 3, a meshed gear 44 is arranged between the rotating shafts of the two driving rollers 41, the other side of the frame 3 is provided with two auxiliary rollers 42, the rotating shafts of the two auxiliary rollers 42 rotate to penetrate through a sliding block 46, the frame 3 is provided with a sliding groove 45, the sliding block 46 is in sliding joint in the sliding groove 45, two sides of the sliding block 46 are fixedly provided with a fixed plate 47, the outer wall of the frame 3 at two sides of the sliding groove 45 is provided with a fixed hole 48, the fixed plate 47 is sleeved with a locking bolt, the rotating shafts of the two auxiliary rollers 42 are respectively sleeved with a transmission belt between the rotating shafts of the two driving rollers 41, the rotating shafts of the driving rollers 41 are connected with the transmission mechanism 6 and the feeding mechanism 7, arc grooves matched with the outer wall of the heat insulation layer 60 are formed on the circumferential outer wall of the driving roller 41, arc grooves matched with the outer wall of the armor layer 40 are formed on the auxiliary roller 42 and the guide roller 2, the sliding block 46 and the sliding groove 45 are of arc structures, the axes of the sliding block 46 and the sliding groove 45 are overlapped with the axis of the rotating shaft of the driving roller 41, the auxiliary roller 42 and the guide roller 2 are symmetrically distributed along the axes of the through holes at the two ends of the forming box 1, after the semi-finished optical cable processed by the armor layer 40 penetrates through the forming box 1, the semi-finished optical cable firstly penetrates through the driving roller 41, at the moment, the driving roller 41 is not contacted 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, and is connected with the fixing plate 47 and the fixing hole 48 through bolts, 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 of the armor layer 40, the initial traction is realized, when the optical cable is gradually processed to enable the finished optical cable to move between the driving rollers 41, the sliding blocks 46 slide at the moment to enable the auxiliary rollers 42 to be far away from the optical cable and fixed, so that the finished optical cable is pulled by the outer wall of the heat insulation layer 60 through the driving rollers 41 to meet the continuous processing requirement.
Further, the coating mechanism 5 includes a fixed section of thick bamboo 51, the inner chamber top of connecting rod fixed connection shaping case 1 is passed through at the top of fixed section of thick bamboo 51, fixed section of thick bamboo 52 has been cup jointed in the fixed section of thick bamboo 51 internal rotation, the circumference outer wall of rotating section of thick bamboo 52 is fixed to be equipped with the spacing ring 53, spacing ring 53 closely laminates the terminal surface of fixed section of thick bamboo 51, the one end outer wall connection drive mechanism 6 of rotating section of thick bamboo 52, the inside division silo 55 that opens of one end of rotating section of thick bamboo 52 has a plurality of discharge holes 57, the annular 54 that opens of the inner wall of fixed section of thick bamboo 51, division silo 55 and annular 54 open the rotating section of thick bamboo 52 outer wall that has a plurality of feed holes 56, the fixed section of thick bamboo 51 department connects feeding mechanism 7, the rotating section of thick bamboo 52 internal diameter that is close to guide roll 2 equals the external diameter of flame retardant coating 50, the rotating section of thick bamboo 52 internal diameter that is close to frame 3 equals the external diameter of insulating layer 60, the through-hole axis coincidence at both ends of shaping case 1 of axis and heating section of thick bamboo 52 and heating section of thick bamboo 8, the inner wall fixed section of thick bamboo 55 and the inner wall that is equipped with evenly, the worm wheel drive mechanism 6 and the worm wheel drive shaft 61 of the inner wall of heating section of thick bamboo 8 are equipped with evenly, the worm wheel drive shaft 61 is equipped with the worm drive shaft 61, the two end of the drive shaft 61 is connected through the two drive shafts 61 of the drive shaft 61 that the two drive shafts 61 of the inner wall 61 that are connected between the drive shaft 61, one end of the drive shaft 61 is connected between the drive shaft 61, and the drive shaft 61 is connected through the drive shaft 61, and 61.
Further, the feeding mechanism 7 comprises a guide rail plate 71, two guide rail plates 71 are fixedly arranged on the outer wall of the forming box 1, a sliding frame 72 is fixedly connected between the two guide rail plates 71 in a sliding manner, racks 75 are fixedly arranged on the inner walls of the two sides of the sliding frame 72, a driven shaft 73 is rotatably sleeved on the outer wall of the forming box 1, one end of the driven shaft 73, far away from the forming box 1, 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 arranged on the outer wall of the forming box 1, pistons 77 are fixedly connected in the two pump cylinders 76 in a sliding manner, push rods 78 are fixedly connected between the two pump cylinders 76 in a sliding manner, the pistons 77 are fixedly connected with push rods 78, one ends of the push rods 78 are fixedly connected with the outer wall of the sliding frame 72, suction pipes and discharge pipes penetrate through the forming box 1 and the fixed cylinder 51 and are connected with the ring grooves 54, the cross sectional areas between the two pump cylinders 76 and the push rods 78 are respectively equal to the cross sectional areas of the flame retardant layer 50 and the heat insulation layer 60, and one ends of the suction pipes and the pump cylinders 76 are respectively provided with one-way valves.
The driving roller 41 rotates to link the transmission mechanism 6, the feeding mechanism 7 and the coating mechanism 5, the specific process is that when the driving roller 41 pulls an optical cable to move, the driven shaft 73 is driven to continuously rotate through the transmission belt, the half gear 74 continuously rotates, the half gear 74 alternately engages racks 75 on two sides of the sliding frame 72, thereby driving the sliding frame 72 to slide reciprocally, the push rod 78 drives the piston 77 to reciprocate along the pump cylinder 76, so that molten raw materials are pumped into the pump cylinder 76 through the suction pipe and pumped into the annular groove 54 through the discharge pipe, molten 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 distribution groove 55 through the feeding holes 56, and are uniformly extruded onto the optical cable through the plurality of discharge 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, and accordingly the rotating cylinder 52 rotates, the discharge holes 57 on one side of the inner wall of the rotating cylinder 52 evenly coat the molten raw materials on the optical cable, and when the optical cable is pulled out of the rotating cylinder 52, the solid inner wall of the rotating cylinder 52 compacts the raw materials, the flame retardant layer 50 and the heat insulating layer 60 are compacted by the movement amount, and the flame retardant layer 60 are uniformly move, and the flame retardant layer is uniformly and synchronously rotated with the rotating of the optical cable, the optical cable is synchronously rotated, and the rotating layer is simultaneously, and the flame retardant layer is coated with the optical cable is coated, and the flame retardant layer is coated, and the flame layer is uniformly and the flame layer is coated, and the flame layer is coated.
In use, the 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, the armor layer 40 passes through the forming box 1 after being wrapped, the driving roller 41 is not contacted with the semi-finished optical cable, the sliding block 46 slides along the sliding groove 45, the auxiliary roller 42 contacts with the armor layer 40, the fixing plate 47 and the fixing hole 48 are connected 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 driving belt to drive the semi-finished optical cable of the armor layer 40 to move, initial traction is realized, when the driving roller 41 pulls the optical cable to move, the driven shaft 73 is driven by the driving belt to continuously rotate, the semi-gear 74 continuously rotates, the semi-gear 74 alternately engages with the racks 75 at two sides of the sliding frame 72, thereby driving the sliding frame 72 to reciprocally slide, the pushing rod 78 drives the piston 77 to reciprocally move along the pump cylinder 76, the melted raw materials are pumped into the pump cylinder 76 through the suction pipe and pumped into the ring 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 ring grooves 54, are extruded into the distributing groove 55 through the feeding holes 56 and are uniformly extruded onto the optical cable through the plurality of discharging holes 57, meanwhile, the rotating shaft of the driving roller 41 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 is rotated, the discharging holes 57 on the inner wall on one side of the rotating cylinder 52 uniformly coat the melted raw materials on the optical cable in rotation, 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 flame retardant layer 50 and the heat insulating layer 60 are uniformly coated, and the moving 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 rotation of the driving roller 41, the amount of raw materials pumped into the rotating cylinder 52 is synchronous with the amount of movement of the optical cable, meanwhile, the rotation of the rotating cylinder 52 is synchronous with the amount of movement of the optical cable, so that the axial and radial directions of the flame retardant layer 50 and the heat insulation layer 60 are kept at uniform thickness, the heating cylinder 8 is heated and shaped after being coated, high flame retardance of the optical cable is realized everywhere, after the flame retardant layer 50 and the heat insulation layer 60 are processed and moved between the driving rollers 41, the sliding blocks 46 slide at the moment so that the auxiliary rollers 42 are far away from the optical cable and fixed, and the outer wall of the heat insulation layer 60 is directly contacted with the driving rollers 41 to pull the finished optical cable, so that the continuous processing requirement is met, the integral processing efficiency is improved, the field is saved, the flame retardant property of the optical cable everywhere is ensured by the flame retardant layer 50 and the heat insulation 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 understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. An integrated machine for multi-core optical cable with flame retardant properties, comprising a plurality of cable cores (10), characterized in that: the outer sides of the cable cores (10) are wrapped with filling rope layers (20), the outer sides of the filling rope layers (20) are fixedly wrapped with non-woven fabric layers (30), the outer sides of the non-woven fabric layers (30) are fixedly wrapped with armor layers (40), the outer sides of the armor layers (40) are coated and shaped through an integrated forming machine to form flame-retardant layers (50) and heat-insulating layers (60), the flame-retardant layers (50) are fixedly attached to the outer walls of the armor layers (40), and the heat-insulating layers (60) are fixedly attached to the outer walls of the flame-retardant layers (50);
the integrated forming machine comprises a forming box (1), two ends of the forming box (1) are provided with through holes for feeding and discharging, one end face of the forming box (1) is rotatably provided with two guide rollers (2), the outer wall of the other end of the forming box (1) is fixedly provided with a frame (3), a traction mechanism (4) is arranged on the frame (3), an inner cavity of the forming box (1) is provided with two coating mechanisms (5), heating cylinders (8) are fixedly arranged in the forming box (1) at one end, close to the traction mechanism (4), of each coating mechanism (5), two sides of the forming box (1) are respectively provided with a transmission mechanism (6) and a feeding mechanism (7), and the transmission mechanism (6) and the feeding mechanism (7) are respectively connected with the traction mechanism (4) and the coating mechanisms (5); the traction mechanism (4) comprises a driving roller (41) and an auxiliary roller (42), wherein one side of the frame (3) close to the forming box (1) is rotatably provided with two driving rollers (41), one rotating shaft of the driving roller (41) is fixedly connected with an output shaft of a motor (43), the motor (43) is fixedly arranged on the frame (3), a meshed gear (44) is arranged between the rotating shafts of the two driving rollers (41), the other side of the frame (3) is provided with two auxiliary rollers (42), the rotating shafts of the two auxiliary rollers (42) are all rotated to penetrate through a sliding block (46), the frame (3) is provided with a sliding groove (45), two sides of the sliding block (46) are fixedly provided with a fixed plate (47), the outer wall of the frame (3) at two sides of the sliding groove (45) is provided with a fixed hole (48), the rotating shafts of the two auxiliary rollers (42) are respectively sleeved with the rotating shafts of the two driving rollers (41), and the driving mechanism (7) is sleeved with the rotating shafts of the driving rollers (7); arc grooves matched with the outer wall of the heat insulation layer (60) are formed in the circumferential outer wall of the driving roller (41), arc grooves matched with the outer wall of the armor layer (40) are formed in the auxiliary roller (42) and the guide roller (2), the sliding blocks (46) and the sliding grooves (45) are of arc structures, the axes of the sliding blocks (46) and the sliding grooves (45) are coincident with the axis of a rotating shaft of the driving roller (41), and 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); the coating mechanism (5) comprises a fixed cylinder (51), the top of the fixed cylinder (51) is fixedly connected with the top of an inner cavity of the forming box (1) through a connecting rod, a rotating cylinder (52) is sleeved in the rotating 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 face of the fixed cylinder (51), one end outer wall 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 material 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 material 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), and the fixed cylinder (51) at the circular groove (54) is connected with a material feeding mechanism (7);
the inner diameter of a 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 frame (3) is equal to the outer diameter of the heat insulation layer (60), the feeding holes (56) and the discharging holes (57) are uniformly distributed along the circumferential direction of the rotating cylinder (52), the axes of the rotating cylinder (52) and the heating cylinder (8) are coincident with the axes of through holes at two ends of the forming box (1), and the inner wall of the heating cylinder (8) is uniformly and fixedly provided with an infrared heating rod.
2. An integrated machine for forming a multi-core optical cable with flame retardant properties according to claim 1, wherein: the armor (40) is a thin round wire mesh belt spirally wound and fixed on the circumferential outer wall of the non-woven fabric layer (30), the flame retardant layer (50) is a low-smoke halogen-free flame retardant polyolefin resin layer, and the raw materials comprise, 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: 300-350 parts of polystyrene, 100-150 parts of polyethylene, 40-50 parts of ceramic powder, 40-50 parts of phosphorus flame retardant, 15-20 parts of compatilizer and 10-15 parts of auxiliary agent.
3. An integrated machine for forming a multi-core optical cable with flame retardant properties according to claim 1, wherein: the transmission mechanism (6) comprises a transmission shaft (61), two transmission shafts (61) are rotatably sleeved in a forming box (1) at the bottom of the rotating cylinder (52), a worm (62) is fixedly installed on each transmission shaft (61), worm wheel rings (63) are fixedly sleeved on the outer wall of one end of each rotating cylinder (52), the worm wheel rings (63) are meshed with the worm (62), a transmission belt is sleeved between one ends of the two transmission shafts (61), and one end of each transmission shaft (61) is connected with a rotating shaft of the driving roller (41) through the transmission belt.
4. An integrated machine for multi-core optical cable with flame retardant property as claimed in claim 3, wherein: feeding mechanism (7) are including guide rail board (71), two guide rail boards (71) of outer wall fixed mounting of shaping case (1), two slide joint has sliding frame (72) between guide rail boards (71), all fixed mounting has rack (75) in the both sides inner wall of sliding frame (72), driven shaft (73) have been cup jointed in the outer wall rotation of shaping case (1), driven shaft (73) are kept away from the pivot of shaping case (1) one end through the drive roll (41), half gear (74) are cup jointed in the fixed cover in driven shaft (73), half gear (74) meshing rack (75), the outer wall fixed mounting of shaping case (1) has two pump cylinders (76), two equal slide joint has piston (77) in pump cylinder (76), two slide and run through between pump cylinder (76) have push rod (78), the outer wall of push rod (72) is connected in the outer wall of one end fixed connection sliding frame (73), pump cylinder (76) are connected with both ends draw-in groove (54) and fixed discharging tube (51).
5. An integrated machine for forming a multi-core optical cable with flame retardant properties as recited in claim 4, wherein: the cross sectional areas between the two pump cylinders (76) and the push rod (78) are respectively equal to the cross sectional areas of the flame retardant layer (50) and the heat insulation layer (60), and one ends of the suction pipe and the discharge pipe, which are close to the pump cylinders (76), are respectively provided with one-way valves.
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| CN115047572A (en) | 2022-09-13 |
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