CN111273414A - Method for manufacturing super multi-core optical cable and bundling equipment - Google Patents
Method for manufacturing super multi-core optical cable and bundling equipment Download PDFInfo
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- 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
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Abstract
The application discloses a manufacturing method of a super multi-core optical cable, which comprises the following steps: 1) preparing a reference beam fiber or a reference belt; the reference bundling fiber is formed by a plurality of single fibers which are twisted and then are wrapped by yarns, and the reference bundling belt is formed by a plurality of optical fiber single belts which are twisted and then are wrapped by yarns; 2) stranding a plurality of reference bundle fibers or a plurality of reference binding bands and then externally winding and binding yarns to obtain a reference combined bundle with a set core number; 3) and extruding the reference combined beam by an extruder to form a sheath on the outside to obtain the super multi-core optical cable. According to the cable core, the equipment investment can be reduced and the production process can be simplified through the cable core obtained through multiple stranding.
Description
Technical Field
The invention relates to the field of optical cables, in particular to a manufacturing method of a super multi-core optical cable and bundling equipment.
Background
In recent years, a completely new paradigm of "cloud computing" has been introduced in the rapidly developing ICT world. The large-scale data centers are established by various operators, Huashi, Baidu, Tencent, Alibara and the like in China. The super multi-core optical cable has a large number of optical fibers, the number of the optical fibers is hundreds or thousands, the super multi-core optical cable is mainly used for connecting a plurality of local data center buildings, the manufacturing of the current super multi-core optical cable needs large investment and complex process, for example, patent document with patent number CN201811604774 discloses a multi-core optical fiber bundle optical cable and a manufacturing method thereof, one optical fiber needs to correspond to one fiber placing frame, 144 optical fiber pay-off frames are needed for producing 144 cores, 144 optical fiber pay-off frames are needed to be in a normal state, and simultaneously, a winding distinguishing identification line needs to be added for every 12 cores, so that the equipment investment and process control difficulty is large.
Disclosure of Invention
The invention provides a manufacturing method of a super multi-core optical cable and a bundling device aiming at the problems.
The technical scheme adopted by the invention is as follows:
a manufacturing method of a super multi-core optical cable comprises the following steps:
1) preparing a reference beam fiber or a reference belt; the reference bundling fiber is formed by a plurality of single fibers which are twisted and then are wrapped by yarns, and the reference bundling belt is formed by a plurality of optical fiber single belts which are twisted and then are wrapped by yarns;
2) stranding a plurality of reference bundle fibers or a plurality of reference binding bands and then externally winding and binding yarns to obtain a reference combined bundle with a set core number;
3) and extruding the reference combined beam by an extruder to form a sheath on the outside to obtain the super multi-core optical cable.
The method comprises the following steps of 1) performing primary twisting, 2) performing secondary twisting, and obtaining the reference combined beam with the set core number as the cable core through the two-time twisting.
The application also discloses a manufacturing method of the super multi-core optical cable, which comprises the following steps:
1) preparing a reference beam fiber or a reference belt; the reference bundling fiber is formed by a plurality of single fibers which are twisted and then are wrapped by yarns, and the reference bundling belt is formed by a plurality of optical fiber single belts which are twisted and then are wrapped by yarns;
2) twisting a plurality of reference bundle fibers or a plurality of reference binding bands and then externally winding and binding yarns to obtain a reference combined bundle;
3) twisting the plurality of reference combined bundles and then externally winding and binding yarns to obtain combined bundles with set core numbers;
4) and extruding the combined beam through an extruder to form a sheath on the outside to obtain the super multi-core optical cable.
The method comprises the following steps of 1) primary stranding, 2) secondary stranding and 3) tertiary stranding, wherein the combined bundle with the set core number obtained by the tertiary stranding is the cable core.
In one embodiment of the present invention, the reference combined bundle is obtained by twisting and then externally winding a plurality of reference bundle fibers, the reference bundle fibers of the reference combined bundle are distinguished by different colors of the binding yarns, and the reference bundle fibers are formed by twisting and then externally winding 12 single fibers with different colors; the color of the binding yarns of the plurality of reference combined bundles in the step 3) is different; the number of the stranding layers of the combined beam in the step 3) is n, each layer is S or Z spirally stranded, and the stranding directions of the two adjacent layers are opposite.
In one embodiment of the present invention, the reference combined bundle is obtained by twisting a plurality of reference belts and then externally winding binding yarns, the reference belts of the reference combined bundle are distinguished by different binding yarn colors, and the optical fiber single tape includes 6 or 12 single fibers with different colors; the color of the binding yarns of the plurality of reference combined bundles in the step 3) is different; the number of the stranding layers of the combined beam in the step 3) is n, each layer is S or Z spirally stranded, and the stranding directions of the two adjacent layers are opposite.
Each layer is S or Z spirally twisted, and the twisting directions of the two adjacent layers are opposite, so that the stable structure and the reliable quality can be ensured. The method can be used for realizing the highest optical fiber density of the super multi-core optical cable in unit cross section. In actual application, the color of the binding yarn can be selected according to GB/T6995 electric wire and cable marking method.
The application also discloses a manufacturing method of the super multi-core optical cable, which comprises the following steps:
1) preparing a reference beam fiber or a reference belt; the reference bundling fiber is formed by a plurality of single fibers which are twisted and then are wrapped by yarns, and the reference bundling belt is formed by a plurality of optical fiber single belts which are twisted and then are wrapped by yarns;
2) twisting a plurality of reference bundle fibers or a plurality of reference binding bands and then externally winding and binding yarns to obtain a reference combined bundle;
3) twisting the plurality of reference combined bundles and then externally winding and binding yarns to obtain combined bundles;
4) twisting the plurality of combined bundles obtained in the previous step, and then wrapping and binding yarns to obtain combined bundles with more cores, and when the core number of the obtained combined bundles meets the requirement, performing the step 5), otherwise, repeating the step 4 until the combined bundles with the set core number are obtained;
5) twisting a plurality of combined bundles meeting the requirements, and then externally winding and binding yarns to obtain a cable core;
6) and extruding the cable core through an extruding machine to form a sheath on the outside to obtain the super multi-core optical cable.
In the step 4), the combined bundle with larger core number can be obtained by twisting on the basis of the combined bundle obtained in the step 3), and the combined bundle with larger set core number can be obtained by repeating the step 4), and the twisted combined bundle with the set core number is taken as the basis to obtain the cable core finally.
In one embodiment of the present invention, the reference combined bundle is obtained by twisting and then externally winding and binding a plurality of reference bundle fibers, the reference bundle fibers of the reference combined bundle are distinguished by different binding colors, and the reference bundle fibers are formed by twisting and then externally winding and binding 12 single fibers with different colors; the color of the binding yarns of the plurality of combined bundles meeting the requirements in the step 5) is different.
In one embodiment of the present invention, the reference combined bundle is obtained by twisting a plurality of reference belts and then externally winding binding yarns, the reference belts of the reference combined bundle are distinguished by different binding yarn colors, and the optical fiber single tape includes 6 or 12 single fibers with different colors; the color of the binding yarns of the plurality of combined bundles meeting the requirements in the step 5) is different.
In one embodiment of the present invention, the number of the stranded layers of the cable core in step 5) is n, each layer is S or Z helically stranded, and the stranding directions of two adjacent layers are opposite.
The application also discloses a bundling device for a super-multicore optical cable, for preparing the reference bundle fiber, the combined bundle, the reference bundling belt or the combined bundle, comprising:
the frame type stranding cage is used for stranding optical fiber products;
the yarn binding machine is used for externally winding binding yarns on the optical fiber product after the frame type stranding cage is stranded;
the take-up device is used for winding an optical fiber product of the externally wound and bundled yarn from the yarn bundling machine;
and the controller is used for controlling the frame type stranding cage, the yarn bundling machine and the take-up device to work.
The term optical fiber product as used herein refers to an optical fiber (single fiber), a reference bundle fiber, a single ribbon of optical fiber (single ribbon), a reference ribbon, or a combination of ribbons.
In one embodiment of the invention, two frame-type stranding cages are provided, and the two frame-type stranding cages are arranged in sequence; and a tractor and a dancing wheel are also arranged between the yarn bundling machine and the take-up device, and an optical fiber product wound and bundled by the outer yarn is dragged by the tractor and enters the take-up device after passing through the dancing wheel.
Through setting up two frame hank cages, can improve production efficiency, positive and negative double-deck hank can be realized to the during operation.
The method is characterized in that the conventional preparation and standard chromatographic requirements of various operators on the number of optical cable reference cores and related matched optical fiber distribution frames are combined, the number of pay-off reels of a frame type stranding cage is preferably 12, namely the frame type stranding cage is a frame type stranding cage with 12 paths, when the method is actually used, the frame type stranding cage with 12 paths comprises a base and three groups of stranding bodies arranged on the base, each group of stranding body comprises four winches uniformly distributed around the axis of the stranding body, each stranding body also comprises a reel releasing processing assembly matched with the corresponding winch, each reel releasing processing assembly comprises a reel releasing unit and a guide unit wheel, each reel releasing unit comprises a reel releasing driving motor, a reel releasing synchronous belt wheel and a pay-off reel, the output end of each reel releasing driving motor is in transmission connection with the corresponding reel releasing synchronous belt wheel, and the reel releasing synchronous belt wheel is in coaxial transmission; put a set processing assembly and still include tension unit, this tension unit includes interconnect's extension spring mechanism and tension pulley, and tension pulley is connected with force transducer simultaneously, controls unwrapping wire tension.
In actual use, the yarn binding machine comprises a yarn binding rack, and a supporting main shaft assembly, a yarn roll shaft assembly and a yarn reserve assembly are sequentially arranged at the upper end of the yarn binding rack from left to right; one side of the frame of the yarn bundling machine is provided with an electrical control system; the supporting main shaft assembly is connected with the yarn roll shaft assembly; the upper end of the yarn bundling machine frame is also provided with a protective cover for protecting and supporting the main shaft assembly, the yarn roll shaft assembly and the yarn reserve assembly.
During the actual application, take-up includes receive and release line mechanism, is used for guiding the product to twine the guiding mechanism on receiving and release line mechanism in order, is used for detecting the detection mechanism that the product received line tensile force.
The invention has the beneficial effects that: the cable core with the set core number can be obtained through multiple times of stranding, and the mode of the cable core can reduce equipment investment and simplify the production process.
Description of the drawings:
FIG. 1 is a schematic process flow diagram of the fiber optic cable of example 1;
FIG. 2 is a schematic process flow diagram of the fiber optic cable of example 2;
FIG. 3 is a simplified diagram of combined beam fabrication;
FIG. 4 is a schematic diagram of a beaming apparatus;
fig. 5 is a side view of the frame-type stranding cage.
The figures are numbered:
1. frame type stranding cages; 2. a pay-off reel; 3. bundling a yarn machine; 4. yarn binding; 5. a tractor; 6. a controller; 7. dancing wheels; 8. a wire take-up device.
The specific implementation mode is as follows:
the present invention will be described in detail below with reference to the accompanying drawings.
Example 1
As shown in fig. 1, a method for manufacturing a multicore optical cable includes the following steps:
1) preparing a reference bundle fiber; the reference bundle fiber is formed by twisting a plurality of single fibers and then externally winding and binding yarns;
2) twisting a plurality of reference bundle fibers and then externally winding and binding yarns to obtain a reference combined bundle with a set core number;
3) and extruding the reference combined beam by an extruder to form a sheath on the outside to obtain the super multi-core optical cable.
The step 1) is primary twisting, the step 2) is secondary twisting, and the reference combined beam with the set number of cores obtained by the two-time twisting is the cable core, so that the equipment investment can be reduced and the production process can be simplified.
In practical application, the reference binding belt can be used for replacing the reference binding fiber, and the reference binding belt is formed by twisting and then externally winding and binding yarns of a plurality of optical fiber single belts.
In practical use, the reference bundle fiber is generally formed by twisting 12 single fibers of different colors and then wrapping the twisted single fibers with a binding yarn. When the optical cable with 144 cores needs to be manufactured, the secondary stranding can be realized by adopting the method, specifically: obtaining a reference bundle fiber containing 12 cores through primary twisting; the 12 reference bundle fibers were twisted twice to obtain a reference combined bundle containing 144 cores, and the reference combined bundle was used as a cable core, and a sheath was formed on the outside thereof to obtain an optical cable containing 144 cores.
Example 2
As shown in fig. 2 and 3, a method for manufacturing a multicore optical cable includes the following steps:
1) preparing a reference binding belt; the reference binding belt is formed by twisting a plurality of optical fiber single belts and then externally winding and binding yarns;
2) twisting a plurality of reference bridles and then externally winding and binding yarns to obtain a reference combined bundle;
3) twisting the plurality of reference combined bundles and then externally winding and binding yarns to obtain combined bundles with set core numbers;
4) and extruding the combined beam through an extruder to form a sheath on the outside to obtain the super multi-core optical cable.
The step 1) is primary twisting, the step 2) is secondary twisting, the step 3) is tertiary twisting, and the combined beam with the set number of cores obtained by the tertiary twisting is the cable core, so that the equipment investment can be reduced and the production process can be simplified.
In actual use, a plurality of reference belts of the reference combined bundle are distinguished by different binding yarn colors, and the optical fiber single belt comprises 6 or 12 single fibers with different colors; the color of the binding yarns of the plurality of reference combined bundles in the step 3) is different; the number of the stranding layers of the combined beam in the step 3) is n, each layer is S or Z spirally stranded, and the stranding directions of the two adjacent layers are opposite. Each layer is S or Z spirally twisted, and the twisting directions of the two adjacent layers are opposite, so that the stable structure and the reliable quality can be ensured. The method can be used for realizing the highest optical fiber density of the super multi-core optical cable in unit cross section. In actual application, the color of the binding yarn can be selected according to GB/T6995 electric wire and cable marking method.
The method of the embodiment can be used for manufacturing optical cables with more cores, for example, 3456 optical cables can be manufactured, specifically: selecting 6-core optical fiber single bands (the optical fiber single bands comprise 6 single fibers), and twisting the four optical fiber single bands once to obtain a reference band containing 24 cores; performing secondary twisting on the 12 reference belts to obtain a reference combined beam containing 288 cores; the 12 reference combined bundles were stranded three times to obtain a combined bundle containing 3456 cores, and this combined bundle was used as a cable core, and a sheath was formed on the outside thereof to obtain an optical cable containing 3456 cores.
In practice, the reference band may be replaced by a reference bundle fiber, which is generally formed by twisting 12 single fibers of different colors and then wrapping the twisted single fibers. The plurality of reference bundle fibers of the reference combined bundle are distinguished by different binder colors.
Example 3
As shown in fig. 3, a method for manufacturing a multicore optical cable includes the following steps:
1) preparing a reference beam fiber or a reference belt; the reference binding band is formed by a plurality of optical fiber single bands which are twisted and then are wrapped by yarns;
2) twisting a plurality of reference bundle fibers or a plurality of reference binding bands and then externally winding and binding yarns to obtain a reference combined bundle;
3) twisting the plurality of reference combined bundles and then externally winding and binding yarns to obtain combined bundles;
4) twisting the plurality of combined bundles obtained in the previous step, and then wrapping and binding yarns to obtain combined bundles with more cores, and when the core number of the obtained combined bundles meets the requirement, performing the step 5), otherwise, repeating the step 4 until the combined bundles with the set core number are obtained;
5) twisting a plurality of combined bundles meeting the requirements, and then externally winding and binding yarns to obtain a cable core;
6) and extruding the cable core through an extruding machine to form a sheath on the outside to obtain the super multi-core optical cable.
And 4) twisting on the basis of the combined bundle obtained in the step 3) to obtain a combined bundle with a larger core number, and repeating the step 4) to obtain a combined bundle with a larger set core number, and twisting on the basis of the combined bundle with the set core number to finally obtain a cable core.
The plurality of reference tow fibers or the plurality of reference binding bands of the reference combined bundle are distinguished by different binding colors, and the binding colors of the plurality of combined bundles satisfying the requirements in the step 5) are different from each other. When the reference bundle fiber is used, the reference bundle fiber is generally formed by twisting 12 single fibers with different colors and then wrapping the twisted single fibers with binding yarns; when a reference band is used, the single fiber ribbon of the reference band typically includes 6 or 12 individual fibers of different colors.
In this embodiment, the number of the stranded layers of the cable core in step 5) is n, each layer is S or Z helically stranded, and the stranding directions of two adjacent layers are opposite. Each layer is S or Z spirally twisted, and the twisting directions of the two adjacent layers are opposite, so that the stable structure and the reliable quality can be ensured. The method can be used for realizing the highest optical fiber density of the super multi-core optical cable in unit cross section. In actual application, the color of the binding yarn can be selected according to GB/T6995 electric wire and cable marking method.
In practical application, in order to control the outer diameter of the optical cable to be minimum, the structure to be most stable and the quality to be most reliable, the optimal selection of the number of combined bundle cores is shown in table 1, and the reverse S or Z spiral stranding is carried out on multiple layers and is shown in table 2.
TABLE 1 core number distribution of reference combination bundles that reference bundle fibers (tapes) can make up
TABLE 2 different combinations of number of twists and number of twisted layers
Taking a 3456-core super multi-core optical cable as an example, the design is as follows:
a 6-core optical fiber single ribbon;
a reference belt: 6 x 4 tape 24 cores/bundle;
combining the beams: 288 cores 24 by 12;
total strand 3456/288-12 strands;
the number of the twisted layers is 2, 3+ 9.
Example 4
As shown in fig. 4 and 5, this embodiment also discloses a bundling apparatus for implementing the super multi-core fiber cable of embodiments 1, 2 or 3, the bundling apparatus for preparing a reference bundle fiber, a combined bundle, a reference ribbon or a combined bundle, comprising:
the frame type stranding cage 1 is used for stranding optical fiber products;
a yarn binding machine 3 for externally winding binding yarns 4 on the frame-type stranded cage-stranded optical fiber product;
the take-up device 8 is used for winding optical fiber products of externally wound and bundled yarns from the yarn bundling machine;
and the controller 6 is used for controlling the frame type stranding cage, the yarn bundling machine and the take-up device to work.
The optical fiber product referred to in this embodiment refers to an optical fiber (single fiber), a reference bundle fiber, an optical fiber single ribbon (single ribbon), a reference band, or a combined bundle.
As shown in fig. 4, in the present embodiment, there are two frame-type stranding cages 1, and the two frame-type stranding cages are sequentially arranged; a tractor 5 and a dancing wheel 7 are also arranged between the yarn bundling machine and the take-up device, and the optical fiber product wound and bundled outside is dragged by the tractor and enters the take-up device after passing through the dancing wheel.
Through setting up two frame hank cages, can improve production efficiency, positive and negative double-deck hank can be realized to the during operation.
In combination with the conventional preparation and standard chromatographic requirements of various operators on the number of optical cable reference cores and related matched optical fiber distribution frames, the number of 2 pay-off discs of a frame type stranding cage is preferably 12, namely the frame type stranding cage is a frame type stranding cage with 12 paths, when the device is actually used, the frame type stranding cage with 12 paths comprises a base and three groups of stranding bodies arranged on the base, each group of stranding body comprises four winches uniformly distributed on the axis of the stranding body, each stranding body also comprises a disc placing processing assembly matched with the corresponding winch, each disc placing processing assembly comprises a disc placing unit and a guide unit wheel, each disc placing unit comprises a disc placing driving motor, a disc placing synchronous belt wheel and a pay-off disc, the output end of the disc placing driving motor is in transmission connection with the disc placing synchronous belt wheel, and the disc placing synchronous belt wheel is in coaxial transmission connection with the pay-off disc; put a set processing assembly and still include tension unit, this tension unit includes interconnect's extension spring mechanism and tension pulley, and tension pulley is connected with force transducer simultaneously, controls unwrapping wire tension.
In actual use, the yarn binding machine comprises a yarn binding rack, and a supporting main shaft assembly, a yarn roll shaft assembly and a yarn reserve assembly are sequentially arranged at the upper end of the yarn binding rack from left to right; one side of the frame of the yarn bundling machine is provided with an electrical control system; the supporting main shaft assembly is connected with the yarn roll shaft assembly; the upper end of the yarn bundling machine frame is also provided with a protective cover for protecting and supporting the main shaft assembly, the yarn roll shaft assembly and the yarn reserve assembly.
During the actual application, take-up includes receive and release line mechanism, is used for guiding the product to twine the guiding mechanism on receiving and release line mechanism in order, is used for detecting the detection mechanism that the product received line tensile force.
The working principle of the bundling device is as follows: respectively installing the needed corresponding single fibers (tapes) or reference bundles or reference combined bundles or combined bundles on a pay-off reel, leading all fiber (tapes) ends of the single fibers (tapes) through the center of a yarn binding machine, and leading the single fibers (tapes) to a take-up device through a dancing wheel on a tractor, wherein during production: the yarn tying machine is started firstly, then the frame type stranding cages are started, related parameters such as paying-off tension of a wire coil, rotating speed of the frame type stranding cages, rotating speed of the yarn tying machine and tension of tension wheels are controlled through an adjusting controller, and the operation mode between the two frame type stranding cages is positive and negative S or Z spiral stranding. The pitch of the bundled fibers (belts) can be adjusted by controlling the rotating speed of the frame type stranding cage; the pitch of the yarn binding can be adjusted by controlling the rotating speed of the yarn binding machine. The specific method is shown in Table 3.
TABLE 3 bundle manufacturing method
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent structural changes made by using the contents of the present specification and the drawings, which are directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. A manufacturing method of a super multi-core optical cable is characterized by comprising the following steps:
1) preparing a reference beam fiber or a reference belt; the reference bundling fiber is formed by a plurality of single fibers which are twisted and then are wrapped by yarns, and the reference bundling belt is formed by a plurality of optical fiber single belts which are twisted and then are wrapped by yarns;
2) stranding a plurality of reference bundle fibers or a plurality of reference binding bands and then externally winding and binding yarns to obtain a reference combined bundle with a set core number;
3) and extruding the reference combined beam by an extruder to form a sheath on the outside to obtain the super multi-core optical cable.
2. A manufacturing method of a super multi-core optical cable is characterized by comprising the following steps:
1) preparing a reference beam fiber or a reference belt; the reference bundling fiber is formed by a plurality of single fibers which are twisted and then are wrapped by yarns, and the reference bundling belt is formed by a plurality of optical fiber single belts which are twisted and then are wrapped by yarns;
2) twisting a plurality of reference bundle fibers or a plurality of reference binding bands and then externally winding and binding yarns to obtain a reference combined bundle;
3) twisting the plurality of reference combined bundles and then externally winding and binding yarns to obtain combined bundles with set core numbers;
4) and extruding the combined beam through an extruder to form a sheath on the outside to obtain the super multi-core optical cable.
3. The method for manufacturing a multicore optical cable of claim 2, wherein the reference combined bundle is obtained by twisting a plurality of reference bundle fibers and then externally winding a binder yarn, the plurality of reference bundle fibers of the reference combined bundle being distinguished by different binder colors, the reference bundle fibers being formed by twisting 12 single fibers having different colors and then externally winding a binder yarn; the color of the binding yarns of the plurality of reference combined bundles in the step 3) is different; the number of the stranding layers of the combined beam in the step 3) is n, each layer is S or Z spirally stranded, and the stranding directions of the two adjacent layers are opposite.
4. The method of manufacturing a multicore optical cable of claim 2, wherein the reference combined bundle is obtained by twisting a plurality of reference ribbons and then externally winding binder yarns, the plurality of reference ribbons of the reference combined bundle are distinguished by different binder yarn colors, and the optical fiber ribbons comprise 6 or 12 single fibers with different colors; the color of the binding yarns of the plurality of reference combined bundles in the step 3) is different; the number of the stranding layers of the combined beam in the step 3) is n, each layer is S or Z spirally stranded, and the stranding directions of the two adjacent layers are opposite.
5. A manufacturing method of a super multi-core optical cable is characterized by comprising the following steps:
1) preparing a reference beam fiber or a reference belt; the reference bundling fiber is formed by a plurality of single fibers which are twisted and then are wrapped by yarns, and the reference bundling belt is formed by a plurality of optical fiber single belts which are twisted and then are wrapped by yarns;
2) twisting a plurality of reference bundle fibers or a plurality of reference binding bands and then externally winding and binding yarns to obtain a reference combined bundle;
3) twisting the plurality of reference combined bundles and then externally winding and binding yarns to obtain combined bundles;
4) twisting the plurality of combined bundles obtained in the previous step, and then wrapping and binding yarns to obtain combined bundles with more cores, and when the core number of the obtained combined bundles meets the requirement, performing the step 5), otherwise, repeating the step 4 until the combined bundles with the set core number are obtained;
5) twisting a plurality of combined bundles meeting the requirements, and then externally winding and binding yarns to obtain a cable core;
6) and extruding the cable core through an extruding machine to form a sheath on the outside to obtain the super multi-core optical cable.
6. The method for manufacturing a multicore optical cable of claim 5, wherein the reference combined bundle is obtained by twisting and then externally winding a binder yarn from a plurality of reference bundle fibers, the plurality of reference bundle fibers of the reference combined bundle are distinguished by different binder colors, and the reference bundle fibers are formed by twisting and then externally winding 12 single fibers having different colors; the color of the binding yarns of the plurality of combined bundles meeting the requirements in the step 5) is different.
7. The method of manufacturing a multicore optical cable of claim 5, wherein the reference combined bundle is obtained by twisting a plurality of reference ribbons and then externally winding binder yarns, the plurality of reference ribbons of the reference combined bundle are distinguished by different binder yarn colors, and the optical fiber ribbons comprise 6 or 12 single fibers with different colors; the color of the binding yarns of the plurality of combined bundles meeting the requirements in the step 5) is different.
8. The method for manufacturing a multicore optical cable of claim 5, wherein the number of twisted layers of the cable core in step 5) is n, each layer is helically twisted in S or Z direction, and the twisting directions of the adjacent layers are opposite.
9. A bundling apparatus for a multicore fiber cable, comprising:
the frame type stranding cage is used for stranding optical fiber products;
the yarn binding machine is used for externally winding binding yarns on the optical fiber product after the frame type stranding cage is stranded;
the take-up device is used for winding an optical fiber product of the externally wound and bundled yarn from the yarn bundling machine;
and the controller is used for controlling the frame type stranding cage, the yarn bundling machine and the take-up device to work.
10. A bundling apparatus for a multicore optical cable according to claim 9, wherein there are two of said frame-type stranding cages, the two frame-type stranding cages being arranged in sequence; and a tractor and a dancing wheel are also arranged between the yarn bundling machine and the take-up device, and an optical fiber product wound and bundled by the outer yarn is dragged by the tractor and enters the take-up device after passing through the dancing wheel.
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