Armored optical cable with spiral protection tube, manufacturing device and preparation method

Abstract

The application discloses a kind of armored optical cable with spiral protective tube, manufacturing device, its preparation method, belong to optical cable preparation technical field, armored optical cable with spiral protective tube includes light unit, spiral protective tube is located in the outer periphery of light unit, spiral protective tube is knitted by linear fiber along S or Z direction, and linear fiber is knitted and solidified into one after twisting;Outer sheath, outer sheath includes in the outer periphery of spiral protective tube.The armored optical cable with spiral protective tube of the application, by setting a layer of spiral protective tube in the center of optical cable, linear fiber knitted by twisting itself has good bending performance, suitable for network line arrangement, linear fiber solidified into one except having good bending performance, it also has the hardness and strength of pipe body, avoid mouse gnawing to hurt internal light unit;Meanwhile, the tubular structure prepared from fiber will not produce voltage or current under the action of high pressure or electromagnetic field, suitable for 5G base station or high-voltage power supply environment.

Description

Technical Field

[0001] This invention belongs to the field of optical cable manufacturing technology, specifically relating to an armored optical cable with a spiral protective tube, a manufacturing apparatus, and a manufacturing method. Background Technology

[0002] Armored optical cables are optical cable products that wrap one or more layers of metal or non-metal sheath structures around the outside of ordinary optical cables. By adding a protective structure to the outside of the optical cable, the optical cable has stronger protective performance.

[0003] Armored optical cables are generally divided into metallic armored and non-metallic armored cables. Metallic armored cables typically use aluminum or steel tape structures to protect the internal fiber optic units. Non-metallic armored cables mainly use FRP (fiberglass reinforced plastic) rods to form a protective structure. In typical rodent-proof environments, both metallic and non-metallic armored cables can meet rodent-proof requirements. However, in densely wired areas of 5G base stations, the base stations have strong electromagnetic fields, which can induce voltage and current in the metallic armor, affecting signal transmission. Around high-voltage power lines, the lines generate strong magnetic fields, causing eddy currents in the metallic armor due to electromagnetic induction, leading to overheating and affecting the cable's lifespan. Therefore, metallic armored optical cables are ineffective around 5G base stations or high-voltage power lines, necessitating the use of non-metallic armored cables. The rodent-proof mechanism of non-metallic cables involves incorporating glass fiber into the FRP rods. Rats that bite into the glass fiber are injured and will not continue gnawing. However, this prevents rats from continuously gnawing on the cable over time, eventually causing the FRP rods to lose their protective capabilities and become ineffective at rodent control. Summary of the Invention

[0004] In view of one or more of the above-mentioned defects or improvement needs of the prior art, the present invention provides an armored optical cable with a spiral protective tube to solve the problem that FRP armored optical cables cannot effectively prevent rodents in 5G base station or high-voltage power line environments.

[0005] To achieve the above objectives, the present invention provides an armored optical cable with a spiral protective tube, comprising:

[0006] Optical unit;

[0007] A spiral protective tube is sleeved around the outer periphery of the optical unit. The spiral protective tube is made of linear fibers twisted and woven along the S or Z direction, and the linear fibers are solidified into one piece after twisting and weaving.

[0008] An outer sheath, which wraps around the outer periphery of the spiral protective tube.

[0009] As a further improvement of the present invention, the spiral protective tube is woven from carbon fiber, FRP or aramid and cured with light-curing resin.

[0010] As a further improvement of the present invention, the spiral weaving angle of the linear fibers in the spiral protective tube is 15°~45°, and the thickness of the spiral protective tube is 0.3~0.8mm.

[0011] The present invention also includes an apparatus for preparing an armored optical cable with a spiral protective tube, comprising:

[0012] The first wire feeding frame, the spiral protective tube winding assembly, the spiral protective tube curing assembly, and the outer sheath extrusion assembly are arranged sequentially.

[0013] The spiral protective tube winding assembly and the spiral protective tube curing assembly are provided with through holes through which the light supply unit passes;

[0014] A second wire feeding frame is also provided on one side of the spiral protective tube winding assembly. The second wire feeding frame is provided with multiple wire feeding reels. Each wire feeding reel is provided with a first tension adjustment mechanism in the wire output direction. An adhesive application assembly is also provided between the first tension adjustment mechanism and the spiral protective tube winding assembly.

[0015] As a further improvement of the present invention, the spiral protective tube winding assembly includes a winding cylinder arranged along the traction direction of the optical unit;

[0016] At least one end of the winding drum is connected to a rotating mechanism;

[0017] The outer wall of the winding drum is fitted with a positioning rubber tube, and the outer periphery of the positioning rubber tube is covered with an elastic body. The positioning rubber tube rotates synchronously with the winding drum.

[0018] As a further improvement of the present invention, the outer diameter of the winding cylinder gradually decreases along the traction direction of the optical unit, and the outer diameter of the positioning rubber cylinder gradually increases along the traction direction of the optical unit.

[0019] As a further improvement of the present invention, the adhesive application assembly includes an adhesive application tank, and a second tension adjustment mechanism is provided above the adhesive application tank;

[0020] The second tension adjustment mechanism includes an infeed wheel and an outfeed wheel arranged along the fiber traction direction, and a tension adjustment wheel is provided between the infeed wheel and the outfeed wheel. The tension adjustment wheel is at least partially immersed in the glue in the glue coating tank.

[0021] As a further improvement of the present invention, the adhesive in the coating assembly is a UV adhesive, and the spiral protective tube curing assembly is a UV curing oven.

[0022] This invention also includes a method for preparing an armored optical cable with a spiral protective tube, comprising the following steps:

[0023] S1, Traction Light Unit;

[0024] S2. The fiber containing glue is wound into a tube around the outer periphery of the optical unit and the fiber is cured into a spiral protective tube.

[0025] S3. Extrude an outer sheath around the outer periphery of the spiral protective tube;

[0026] S4. Cool and shape the outer sheath to obtain an armored optical cable with a spiral protective tube.

[0027] The aforementioned improved technical features can be combined with each other as long as they do not conflict with each other.

[0028] In summary, the beneficial effects of the above-described technical solutions conceived by this invention compared with the prior art include:

[0029] (1) The armored optical cable with a spiral protective tube of the present invention has a spiral protective tube set in the center of the optical cable. The spiral protective tube is made of linear fibers woven and solidified into one piece. The linear fibers themselves have good bending performance and are suitable for network line layout. In addition to good bending performance, the solidified linear fibers also have the hardness and strength of the tube body, which prevents rats from gnawing and damaging the internal optical units. At the same time, the fiber-based tubular structure has excellent dielectric insulation performance. It will not generate induced potential and leakage current in high voltage electric field or alternating magnetic field environment, which can effectively avoid the risk of optical cable breakdown and discharge of conventional metal reinforcement. It is suitable for stable operation in strong electromagnetic environment such as 5G base stations / high voltage power transmission and transformation equipment. The armored optical cable with a spiral protective tube of the present invention can adapt to use in high voltage and strong magnetic field environment, and has the strength and toughness of the tube body. It will not be chewed by rats and effectively protects the internal optical fiber. At the same time, it also has good bending performance, which facilitates the bending and wiring of the optical cable in complex environment.

[0030] (2) The manufacturing apparatus for armored optical cable with spiral protective tube of the present invention adds a spiral protective tube winding assembly and a spiral protective tube curing assembly to the optical cable preparation line. After the first wire feeding frame releases the optical unit, the spiral protective tube is directly wound and formed on the outer periphery of the optical unit and then cured and formed, so as to realize the winding and forming of the spiral protective tube in the optical cable preparation process. At the same time, a second wire feeding frame, a first tension adjustment mechanism and an adhesive coating assembly are provided on the side of the spiral protective tube winding assembly. Multiple second wire feeding frames and the first tension adjustment mechanism can realize the uniform wire feeding and winding of multiple fibers to form a densely wound tube structure on the spiral protective tube winding assembly. The adhesive coating assembly is mainly used to coat the fiber surface with glue. After the tube structure is formed on the surface of the spiral protective tube winding assembly, the glue on the fiber surface is cured by the spiral protective tube curing assembly, so that the fiber winding structure is cured into a spiral protective tube. The manufacturing apparatus for armored optical cables with spiral protective tubes in this application provides a forming system for forming armored optical cables with spiral protective tubes. This system enables the addition of spiral protective tubes inside the optical cable without affecting the overall manufacturing process of the armored optical cable, thereby giving the armored optical cable better tensile, bending and rodent-proof properties. Attached Figure Description

[0031] Figure 1 This is a cross-sectional structural diagram of an armored optical cable with a spiral protective tube in an embodiment of the present invention;

[0032] Figure 2 This is a schematic diagram of the overall structure of the armored optical cable with a spiral protective tube in an embodiment of the present invention;

[0033] Figure 3 This is a schematic diagram of the overall structure of the manufacturing apparatus for an armored optical cable with a spiral protective tube in an embodiment of the present invention.

[0034] Figure 4 This is a schematic diagram of the structure of the spiral protective tube curing assembly in the manufacturing apparatus for armored optical cables with spiral protective tubes in an embodiment of the present invention.

[0035] Figure 5 This is a schematic diagram of the adhesive coating component in the manufacturing apparatus for an armored optical cable with a spiral protective tube, as described in this embodiment of the invention.

[0036] Figure 6 This is a schematic flowchart illustrating the preparation method of the armored optical cable with a spiral protective tube in an embodiment of the present invention.

[0037] In all the accompanying drawings, the same reference numerals denote the same technical features, specifically:

[0038] 1. Fiber optic unit; 2. Inner sheath; 3. Spiral protective tube; 4. Outer sheath; 5. Spiral protective tube winding assembly; 6. Spiral protective tube curing assembly; 7. Outer sheath extrusion assembly; 8. Second pay-off frame; 9. Adhesive application assembly; 10. Pre-curing oven; 11. Cooling assembly; 12. Secondary traction assembly;

[0039] 601. Winding drum; 602. Rotating motor; 603. Positioning rubber sleeve;

[0040] 801. Pay-off reel; 802. First tension adjustment mechanism;

[0041] 901. Glue coating tank; 902. Infeed wheel; 903. Outfeed wheel; 904. Tension adjustment wheel. Detailed Implementation

[0042] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention. Furthermore, the technical features involved in the various embodiments of this invention described below can be combined with each other as long as they do not conflict with each other.

[0043] In the description of this invention, it should be understood that, unless otherwise stated, the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0044] Furthermore, unless otherwise stated, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0045] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0046] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0047] Example:

[0048] Please see Figures 1-6 In a preferred embodiment of the present invention, the armored optical cable with a spiral protective tube includes an optical unit, and a spiral protective tube 3 is provided on the outer periphery of the optical unit. The spiral protective tube 3 is made of linear fibers twisted and woven along the S or Z direction, and the linear fibers are solidified into one piece after twisting and weaving. At the same time, an outer sheath 4 is provided on the outer periphery of the spiral protective tube 3.

[0049] The armored optical cable with a spiral protective tube in this application has a spiral protective tube 3 at the center of the optical cable. The spiral protective tube 3 is made of linear fibers woven and solidified into one piece. The twisted and woven linear fibers themselves have good bending performance, suitable for network line layout. In addition to good bending performance, the solidified linear fibers also have the hardness and strength of the tube body, preventing rodents from gnawing and damaging the internal optical units. At the same time, the fiber-based tubular structure has excellent dielectric insulation performance, and will not generate induced potential or leakage current in high-voltage electric field or alternating magnetic field environment, which can effectively avoid the risk of optical cable breakdown and discharge of conventional metal reinforcement components, and is suitable for stable operation in strong electromagnetic environments such as 5G base stations / high-voltage power transmission and transformation equipment. The armored optical cable with spiral protective tube of this invention can adapt to use in high voltage and strong magnetic field environments, and has the strength and toughness of the tube body, which will not be chewed by rodents, effectively protecting the internal optical fibers; at the same time, it also has good bending performance, which facilitates the bending and wiring of the optical cable in complex environments.

[0050] Further, as an optional embodiment of the present invention, the spiral protective tube 3 is woven from carbon fiber, FRP, or aramid and cured with photocurable resin. Preferably, the spiral angle of the fiber weaving inside the spiral protective tube 3 is 15°~45°, and the overall thickness of the spiral protective tube 3 is 0.3~0.8mm. Preferably, the linear fibers woven into the spiral protective tube 3 in the present invention are high-modulus fibers with a tensile modulus of 280GPa~900GPa.

[0051] Further, as an optional embodiment of the present invention, the optical unit includes: at least one optical fiber unit 1, an inner sheath 2 disposed on the outer periphery of the optical fiber unit 1, and fiber grease filling the space between the optical fiber unit 1 and the inner sheath 2. The armored optical cable with a spiral protective tube in the present invention uses a spiral protective tube 3 as a protective and tensile structure, and no separate reinforcing member is set inside, resulting in better overall bending performance of the optical cable. In this application, fiber grease is filled between the optical fiber unit 1 and the inner sheath 2. The fluid fiber grease allows the internal optical fiber unit 1 to have a certain amount of movement space, resulting in better bending performance and reduced bending loss of the optical fiber unit 1. In the present invention, the optical fiber unit 1 is the basic functional unit for optical signal transmission, comprising a fiber core layer, a cladding layer and a coating layer disposed sequentially on the outer periphery of the fiber core layer, and a sheath disposed on the outer periphery of the coating layer.

[0052] Furthermore, as an optional embodiment of the present invention, the armored optical cable with a spiral protective tube in this application has a tensile strength of 1000N~3000N, a bending loss ≤0.05dB, a minimum bending radius of 5D (D is the diameter of the optical cable), and a puncture resistance of not less than 1000N.

[0053] Furthermore, as an optional embodiment of the present invention, the outer sheath 4 in this application is made of low-smoke halogen-free flame-retardant polyolefin, polyurethane, or fluororubber, and the overall thickness of the outer sheath 4 is 0.6~1.2mm. The outer sheath 4 made of low-smoke halogen-free flame-retardant polyolefin, polyurethane, or fluororubber enables the optical cable to have good flame-retardant and weather-resistant properties, making the optical cable meet environmental protection standards while extending the life of the optical cable to more than 25 years.

[0054] Furthermore, as an optional embodiment of the present invention, this application also includes a manufacturing apparatus for an armored optical cable with a spiral protective tube, used to prepare an armored optical cable with a spiral protective tube, comprising a first pay-off frame (not shown), a spiral protective tube winding assembly 5, a spiral protective tube curing assembly 6, and an outer sheath extrusion assembly 7 arranged sequentially along the optical cable manufacturing direction. The spiral protective tube winding assembly 5 and the spiral protective tube curing assembly 6 are provided with through holes for the optical unit to pass through. At the same time, a second pay-off frame 8 is also provided on one side of the spiral protective tube winding assembly 5. The second pay-off frame 8 is provided with a plurality of pay-off reels 801, and a first tension adjusting mechanism 802 is provided in the wire output direction of each pay-off reel 801. An adhesive application assembly 9 is also provided between the first tension adjusting mechanism 802 and the spiral protective tube winding assembly 5.

[0055] The manufacturing apparatus for armored optical cables with spiral protective tubes in this application adds a spiral protective tube winding assembly 5 and a spiral protective tube curing assembly 6 to the optical cable manufacturing line. After the first pay-off frame releases the optical unit, a spiral protective tube 3 is directly wound around the outer periphery of the optical unit and then cured, thus realizing the winding and forming of the spiral protective tube 3 in the optical cable manufacturing process. At the same time, a second pay-off frame 8, a first tension adjustment mechanism 802, and an adhesive application assembly 9 are arranged on the side of the spiral protective tube winding assembly 5. Multiple second pay-off frames 8 and the first tension adjustment mechanism 802 can realize the uniform pay-off and winding of multiple fibers to form a densely wound tube structure on the spiral protective tube winding assembly 5. The adhesive application assembly 9 is mainly used to apply glue to the fiber surface. After the tube structure is formed on the surface of the spiral protective tube winding assembly 5, the adhesive on the fiber surface is cured by the spiral protective tube curing assembly 6, so that the fiber winding structure is cured into a spiral protective tube 3. The manufacturing apparatus for armored optical cables with spiral protective tubes in this application provides a molding system for forming armored optical cables with spiral protective tubes. It enables the addition of spiral protective tubes 3 inside the optical cable without affecting the overall manufacturing process of the armored optical cable, so that the armored optical cable has better tensile, bending and rodent-proof properties.

[0056] Further, as an optional embodiment of the present invention, the spiral protective tube winding assembly 5 includes a winding cylinder 601 arranged along the traction direction of the optical unit. A through hole is opened axially in the winding cylinder 601 for the optical unit to pass through, and the outer side of the winding cylinder 601 is used for winding fibers into a tube. At least one end of the winding cylinder 601 is connected to a rotating mechanism to drive the entire winding cylinder to rotate, so that the fibers released from the second feeder 8 are wound into a tube on the outer side of the winding cylinder 601. Simultaneously, a positioning rubber tube 603 is attached to the outer wall of the winding cylinder 601. The outer periphery of the positioning rubber tube 603 is covered with an elastomer, which is pressed against the surface of the winding cylinder 601. When the winding cylinder 601 rotates, the positioning rubber tube 603 presses against the surface of the winding cylinder 601 and rotates accordingly, causing the fibers traction on the surface of the winding cylinder 601 to correspondingly adhere to the surface of the winding cylinder 601 and be wound into a cylindrical structure.

[0057] Furthermore, as an optional embodiment of the present invention, the outer diameter of the winding cylinder 601 gradually decreases along the traction direction of the optical unit, while the outer diameter of the positioning adhesive cylinder 603 gradually increases along the traction direction of the optical unit, so that the positioning adhesive cylinder 603 adheres tightly to the surface of the winding cylinder 601. The gradually decreasing outer diameter of the winding cylinder 601 causes the inner diameter of the fiber to gradually decrease during the winding process, resulting in gradual compression between the fibers. This also facilitates the removal of the fibers wound into a tube from the winding cylinder 601, allowing for curing and shaping within the spiral protective tube curing assembly.

[0058] Optionally, the rotating mechanism includes a rotating motor 602, which is rotatably connected to the winding drum 601 via a belt. Both ends of the winding drum 601 are connected to the mounting frame via ball bearings, and the mounting frame allows the winding drum 601 to be stably fitted onto the outside of the optical unit.

[0059] Further, as an optional embodiment of the present invention, the adhesive coating assembly 9 in this application specifically includes an adhesive coating tank 901, in which adhesive is stored; a second tension adjusting mechanism is also provided above the adhesive coating tank 901, the second tension adjusting mechanism including an infeed wheel 902 and an outlet wheel 903 arranged along the fiber traction direction, and a tension adjusting wheel 904 provided between the infeed wheel 902 and the outlet wheel 903, the tension adjusting wheel 904 being at least partially immersed in the adhesive. Multiple fibers drawn out by the first tension adjusting mechanism converge at the infeed wheel 902, then wind around the tension adjusting wheel 904, and finally are drawn to the outlet wheel 903 to complete the adhesive coating, and finally wound onto the spiral protective tube winding assembly 5 by the outlet wheel 903. This application first uses the pay-off reel 801 and the first tension adjustment mechanism 802 to synchronously pull and wind each fiber, so that the winding line formed by multiple fibers at the feed wheel 902 is uniform and dense. After the glue is applied, the winding fiber and the output wheel 903 are prone to relative slippage. Therefore, the tension adjustment wheel 904 is set to adjust the output speed of the winding fiber, so as to ensure that the winding fiber wound from the output wheel 903 to the spiral protective tube winding assembly 5 is supplied at a uniform rate, and to ensure the overall molding strength of the spiral protective tube 3.

[0060] Furthermore, as an optional embodiment of the present invention, the adhesive in the coating component 9 is a UV adhesive, and the spiral protective tube curing component 6 is a UV curing oven. This application relates to the overall preparation of armored optical cables. After the spiral protective tube 3 is formed, an outer sheath 4 needs to be extruded and formed externally. Therefore, the adhesive is subject to secondary heating after curing. To avoid the adhesive melting due to secondary heating during the extrusion forming of the outer sheath 4, UV adhesive is selected during the forming process of the spiral protective tube 3, and the spiral protective tube 3 is cured and formed by a UV curing oven. This avoids the tube deformation problem caused by the softening of the adhesive during the extrusion forming of the outer sheath 4, and ensures the overall strength of the formed spiral protective tube 3.

[0061] Furthermore, as an optional embodiment of the present invention, a pre-curing oven 10 is provided between the adhesive coating assembly 9 and the spiral protective tube winding assembly 5. The pre-curing oven 10 is also a curing structure, which is mainly used to pre-cur the adhesive coated on the fiber surface by the adhesive coating assembly 9, so as to prevent the adhesive from dripping everywhere and spreading to the surface of the optical unit after wetting the spiral protective tube winding assembly 5, so that the optical unit and the spiral protective tube 3 are cured together. On the other hand, after the adhesive is pre-cured, it can prevent the fibers from sliding relative to each other on the surface of the spiral protective tube 3. After curing by the pre-curing oven 10, the adhesive-coated fibers are pre-bonded together. When winding on the winding tube, the fibers are arranged in an orderly manner along the surface of the winding tube to form a tubular structure, and then cured together by the spiral protective tube curing assembly 6.

[0062] Furthermore, as an optional embodiment of the present invention, the outer sheath extrusion assembly 7 in this application is also sequentially connected to a cooling assembly 11 and a secondary traction assembly 12 along the optical cable manufacturing direction. The cooling assembly 11 is mainly used to cool and shape the extruded outer sheath 4, and the secondary traction assembly 12 is mainly used to control the excess length of the optical cable. The armored optical cable with a spiral protective tube in this application does not have any reinforcing members inside the optical cable; the entire cable bears tensile strength through the spiral protective tube 3. However, the spiral protective tube 3, which has good bending performance, has weaker shrinkage resistance compared to traditional reinforcing members. Therefore, this application provides a secondary traction assembly 12 after the cooling assembly to control the excess length of the optical cable.

[0063] Optionally, the secondary traction component 12 used in this invention belongs to the two sets of traction devices commonly used in optical cable production. The two sets of traction devices used for adjusting the excess length of optical cables in the existing design can all be used as the secondary traction component 12 in this application, and will not be described in detail here.

[0064] Furthermore, a take-up device is also provided in the lead-out direction of the secondary traction component 12. The take-up device and the secondary traction component 12 are synchronously pulled by a swing wheel to wind up and store the formed armored optical cable with a spiral protective tube, which facilitates the storage and transportation of the optical cable.

[0065] The working process of the manufacturing apparatus for the armored optical cable with a spiral protective tube in this invention is as follows: The first pay-off frame releases the optical unit, which is pulled through the spiral protective tube winding assembly 5, the spiral protective tube curing assembly 6, and the outer sheath extrusion assembly 7; the second pay-off frame 8 releases multiple fibers, which are wound into a bundle, and then glue is applied to the surface of the bundled fibers. The glue is initially cured, and then the initially cured bundled fibers are wound onto the spiral protective tube winding assembly 5. The bundled fibers are wound into a tube and formed on the outer periphery of the optical unit; the bundled fibers wound into a tube are cured into a tube under the action of the spiral protective tube curing assembly 6 to form a spiral protective tube 3 on the outer periphery of the optical unit. The outer sheath extrusion assembly 7 extrudes and forms an outer sheath 4 on the outer periphery of the spiral protective tube 3. After cooling and forming, an armored optical cable with a spiral protective tube is obtained, and then the armored optical cable with a spiral protective tube is wound and stored.

[0066] Furthermore, as an optional embodiment of the present invention, this application also includes a method for preparing an armored optical cable with a spiral protective tube, which includes the following steps:

[0067] S1, Traction Light Unit;

[0068] S2. The fiber containing glue is wound into a tube around the outer periphery of the optical unit and the fiber is cured into a spiral protective tube 3.

[0069] S3. Extrude an outer sheath 4 around the outer periphery of the spiral protective tube 3;

[0070] S4. Cool and mold the outer sheath 4 to obtain an armored optical cable with a spiral protective tube.

[0071] Furthermore, as an optional embodiment of the present invention, step S2 specifically includes:

[0072] A winding drum 601 is provided in the traction direction of the optical unit, and the optical unit passes through the inside of the winding drum 601;

[0073] Multiple fibers are pulled to the side of the winding drum 601, glue is applied to the surface of the multiple fibers, and the multiple fibers are bundled together. The bundled fibers are wound around the surface of the winding drum 601 at a set angle to form a tubular structure.

[0074] The fiber is cured into a spiral protective tube using a curing device.

[0075] Furthermore, as an optional embodiment of the present invention, the adhesive on the fibers is further subjected to preliminary curing before the fibers coated with adhesive are wound onto the winding drum 601.

[0076] Furthermore, as an optional embodiment of the present invention, after the outer sheath 4 is cooled and formed, the armored optical cable with a spiral protective tube is subjected to secondary traction and stretching.

[0077] Those skilled in the art will readily understand that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. An armored optical cable provided with a spiral protection tube, characterized in that, Comprise: A light unit; A spiral protection pipe, which is sleeved on the outer periphery of the light unit, is twisted and woven in S or Z direction by linear fibers, and is integrated by using glue after the twisting and weaving of the linear fibers; The spiral protection pipe is formed by winding a winding cylinder, the winding cylinder is arranged along the traction direction of the light unit, a through hole is formed in the winding cylinder along the axial direction for the light unit to pass through, and at least one end of the winding cylinder is connected with a rotating mechanism; An outer cylinder wall of the winding cylinder is attached with a positioning glue cylinder, an outer periphery of the positioning glue cylinder is covered with an elastic body, and the positioning glue cylinder rotates synchronously with the winding cylinder; The outer diameter of the winding cylinder gradually decreases along the traction direction of the light unit, and the outer diameter of the positioning glue cylinder gradually increases along the traction direction of the light unit; An outer sheath is wrapped on the outer periphery of the spiral protection pipe.

2. The steel cable with a helically armored tube according to claim 1, characterized in that, The spiral protection pipe is woven by carbon fibers, FRP or aramid fibers, and is formed by using light-cured resin.

3. The steel cable with a helically armored tube according to claim 1, characterized in that, The spiral weaving angle of the linear fibers in the spiral protection pipe is 15°-45°, and the thickness of the spiral protection pipe is 0.3-0.8 mm.

4. An apparatus for producing an armored optical cable provided with a spiral protection tube, for producing the armored optical cable provided with a spiral protection tube according to any one of claims 1 to 3, characterized by, Comprise a first wire unwinding frame, a spiral protection pipe winding assembly, a spiral protection pipe curing assembly and an outer sheath extrusion assembly arranged in sequence; Through holes are formed in the spiral protection pipe winding assembly and the spiral protection pipe curing assembly for the light unit to pass through; A second wire unwinding frame is further arranged on one side of the spiral protection pipe winding assembly, a plurality of wire unwinding discs are arranged on the second wire unwinding frame, a first tension adjusting mechanism is arranged on the wire outlet direction of each wire unwinding disc, and a glue coating assembly is further arranged between the first tension adjusting mechanism and the spiral protection pipe winding assembly; The spiral protection pipe winding assembly comprises a winding cylinder arranged along the traction direction of the light unit; At least one end of the winding cylinder is connected with a rotating mechanism; An outer cylinder wall of the winding cylinder is attached with a positioning glue cylinder, an outer periphery of the positioning glue cylinder is covered with an elastic body, and the positioning glue cylinder rotates synchronously with the winding cylinder; The outer diameter of the winding cylinder gradually decreases along the traction direction of the light unit, and the outer diameter of the positioning glue cylinder gradually increases along the traction direction of the light unit.

5. The apparatus for producing the armored optical cable with a spiral protection tube according to claim 4, characterized by The glue coating assembly comprises a glue coating pool, and a second tension adjusting mechanism is further arranged above the glue coating pool; The second tension adjusting mechanism comprises an inlet wire wheel and an outlet wire wheel arranged along the fiber traction direction, and a tension adjusting wheel is arranged between the inlet wire wheel and the outlet wire wheel, and the tension adjusting wheel is at least partially immersed in the glue in the glue coating pool.

6. The apparatus for producing the armored optical cable with a spiral protection tube according to claim 4, wherein The glue in the glue coating assembly is UV glue, and the spiral protection pipe curing assembly is a UV light curing oven.

7. The apparatus for producing the armored optical cable with a spiral protection tube according to claim 4, characterized by A pre-curing oven is further arranged between the glue coating assembly and the spiral protection pipe winding assembly.

8. A method for producing an armored optical cable provided with a spiral protection tube, for producing the armored optical cable provided with a spiral protection tube as recited in any one of claims 1 to 3, characterized by, Comprise the following steps: S1, traction of the light unit; S2, winding of the fibers containing glue on the outer periphery of the light unit into a pipe, and curing of the fibers into a spiral protection pipe; S3, extrusion of an outer sheath on the outer periphery of the spiral protection pipe; S4, cooling and forming of the outer sheath to obtain an armored optical cable with the spiral protection pipe.

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