Optical fiber ribbon cable

Abstract

The application discloses a kind of optical fiber ribbon bunching processing device and bundle structure coiled optical fiber ribbon cable, it is related to optical cable production technical field, its technical scheme main point is: including pay-off stranding mechanism, pay-off stranding mechanism includes vertical frame, carousel assembly, stranding head and stranding die, the rotation axis of carousel assembly is perpendicular to ground setting;Carousel assembly includes stranding drive part, center base and extension ring disc, extension ring disc is detachably fixed on the periphery of center base or the periphery of adjacent another extension ring disc;Center base and extension ring disc are respectively provided with a plurality of wire reel racks and are used to drive wire reel rack to untwist untwist drive part, stranding drive part is provided with electric slip ring between center base, and power supply contact is arranged between center base and extension ring disc, and between adjacent extension ring disc.The application can be flexibly, quickly adjusted physical configuration according to actual production demand, to realize the purpose of on-demand driving, energy saving and cost reduction.

Description

Technical Field

[0001] This invention relates to the field of optical cable manufacturing technology, and more specifically, to an optical fiber ribbon bundling processing apparatus and a bundled structure for winding optical fiber ribbon cables. Background Technology

[0002] With the development of 5G networks and data centers, the demand for high fiber core density and high stability fiber ribbon cables is increasing. Traditional fiber ribbon cables typically stack flat fiber ribbons in parallel within a circular loose tube, which results in low space utilization and poor bending performance.

[0003] To improve performance, the industry has proposed pre-stretching multiple fiber ribbons into compact circular bundles of optical units. However, existing mainstream stranding equipment (such as horizontal cabling machines) typically employs a large, fixed rotating body with its axis parallel to the ground, and all pay-off reels arranged circumferentially on the rotating body. This structure has several drawbacks: First, when producing low-core-count optical cables, it is still necessary to drive the large rotating body, which may be fully loaded with empty or idle reels, resulting in significant energy waste. Second, the equipment has a large lateral dimension, occupies a large area, and its large rotational inertia leads to unstable operation. Furthermore, the fixed number of reels cannot flexibly adapt to changing production needs, resulting in poor applicability. Users often need to invest in multiple production lines to cover different core count ranges, leading to high costs.

[0004] Therefore, a new solution is needed to address this problem. Summary of the Invention

[0005] In view of this, the purpose of the present invention is to provide an optical fiber ribbon bundling processing device and a bundled structure for winding optical fiber ribbon cables, which can flexibly and quickly adjust the physical configuration according to actual production needs, thereby achieving the purpose of on-demand driving and energy saving.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is: an optical fiber ribbon bundling processing device, including a wire feeding and stranding mechanism, wherein the wire feeding and stranding mechanism includes a vertical frame, a turntable assembly disposed at the bottom of the vertical frame, a stranding head disposed on the turntable assembly, and a stranding mold disposed at the top of the vertical frame, and the rotation axis of the turntable assembly is perpendicular to the ground.

[0007] The turntable assembly includes a stranding drive unit mounted on the vertical frame, a central base plate fixed to the output end of the stranding drive unit, and zero or at least one extended ring plate, wherein the extended ring plate is detachably coaxially fixed to the periphery of the central base plate or the periphery of another adjacent extended ring plate.

[0008] The central base disk and the expansion ring disk are respectively provided with multiple cable trays for mounting fiber optic ribbon cable trays and untwisting drive components for driving the cable trays to untwise along the circumferential direction. An electric slip ring is provided between the twisting drive component and the central base disk for supplying power to the untwisting drive component on the central base disk. Power supply contacts are provided between the central base disk and the expansion ring disk, as well as between adjacent expansion ring disks, for supplying power to the untwisting drive component on each expansion ring disk in stages.

[0009] Preferably, the cable reel frame includes a rotating cylinder and a rotating shaft for inserting and fixing the optical fiber ribbon cable reel. The central base plate and the expansion ring plate are respectively provided with a first rotating groove. The rotating cylinder is rotatably connected in the first rotating groove. A longitudinal groove with an upward opening is opened on the side wall of the rotating cylinder along its axial direction, and a step is formed at the bottom of the longitudinal groove. The step is used to support the rotating shaft and allow the rotating shaft to rotate. A limit block is detachably connected in the longitudinal groove to limit the longitudinal disengagement of the rotating shaft.

[0010] Preferably, a damping pad is provided on the step, and a rough layer is provided on the rotating shaft that contacts the damping pad.

[0011] Preferably, the limiting block is provided with an elastic head at one end near the rotating shaft. The surface of the elastic head is a smooth surface. The limiting block is connected to the rotating cylinder by a locking bolt. The limiting block is provided with an elongated groove for the locking bolt to pass through. The elongated groove extends longitudinally along the rotating cylinder.

[0012] Preferably, a guide bracket is fixed to the top of the rotating cylinder, and a guide block is rotatably connected to the guide bracket. The guide block is located above the rotating cylinder and is coaxially arranged with the rotating cylinder. Two guide rollers are rotatably connected to the guide block, and there is a gap between the two guide rollers for the optical fiber ribbon to pass through. The axis of the guide roller is perpendicular to the axis of the guide block.

[0013] Preferably, a connecting post is fixed on the central base plate, and the twisting head is fixed at the end of the connecting post away from the central base plate. A splitter plate is provided on the connecting post between the central base plate and the twisting head. The splitter plate is provided with a plurality of second rotating slots. The twisting head includes a twisting disc, and the twisting disc is provided with a plurality of third rotating slots. A rotating head is rotatably connected in each of the second rotating slots and the third rotating slots. A rectangular slot for the optical fiber ribbon to pass through is provided through the rotating head.

[0014] Preferably, the torque-reversing drive includes a torque-reversing motor fixed on the central base plate and the extended ring plate respectively, a gear fixed on the output end of the torque-reversing motor, and a gear ring fixed on the outer peripheral wall of the rotating cylinder, wherein the gear meshes with the gear ring.

[0015] Preferably, the stranding drive includes a reducer and a stranding motor fixed on the vertical frame. The output end of the stranding motor is connected to the input end of the reducer. The central base plate is fixedly connected to the output end of the reducer. The vertical frame is also provided with support rollers, which roll and support the bottom of the central base plate.

[0016] Preferably, a wrapping mechanism is also provided on the vertical frame above the stranding mold for wrapping a first water-blocking tape on the stranded optical fiber ribbon to form a bundled optical unit. The optical fiber ribbon bundling processing device also includes a horizontal frame, on which a sleeve extrusion mechanism and a take-up mechanism are arranged sequentially along the material flow direction. The horizontal frame is provided with guide wheels for guiding the bundled optical fiber ribbon from the vertical direction to the horizontal direction.

[0017] A bundled structure windable fiber ribbon cable includes multiple bundled optical units formed by the fiber ribbon bundling processing device, a central reinforcement member, a cable core formed by the multiple bundled optical units surrounding the central reinforcement member through at least two layers of SZ stranded structure, a second water-blocking tape disposed between two adjacent layers of SZ stranded structure, a third water-blocking tape disposed outside the cable core, and an outer sheath located outside the third water-blocking tape, wherein at least one FRP reinforcement member is embedded inside the outer sheath.

[0018] Compared with the prior art, the advantages of the fiber ribbon bundling processing device and the bundled structure capable of winding fiber ribbon optical cable disclosed in this invention are:

[0019] 1. By adopting a modular and detachable turntable assembly design with a central base plate and an expansion ring plate, the turntable assembly can be flexibly assembled according to the current optical cable core count requirements. When producing low core count products, only the necessary, lightweight central base plate and a small number of expansion ring plates are installed and driven, avoiding the huge ineffective energy consumption caused by the need to drive the entire large fixed rotating body under no-load or low-load conditions in traditional equipment. It achieves "on-demand drive" from the essence of equipment structure and has a good energy-saving effect.

[0020] 2. By setting up a vertical frame, the rotation axis of the turntable assembly is perpendicular to the ground, which allows the wire feeding and stranding mechanism to make full use of vertical space. Compared with the horizontal structure, this effectively reduces the horizontal footprint of the equipment. At the same time, the vertical layout means that the turntable assembly does not need to rely on more support frames, making the structure simpler, reducing the mass and radial dimensions of the rotating parts, effectively reducing the moment of inertia, making the operation more stable, and reducing the energy consumption during start-up and shutdown.

[0021] 3. The wire feeding and stranding mechanism integrates a de-twisting drive, which can actively de-twise each wire reel frame, effectively counteracting the torque generated on the optical fiber ribbon by the revolution of the turntable. Combined with the shaping effect of the stranding mold fixed at the top of the vertical frame, it can achieve precise and low-damage stranding of multiple optical fiber ribbons. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the fiber optic ribbon bundling processing apparatus according to an embodiment of this application;

[0024] Figure 2 This is a schematic diagram of the structure of the vertical rack in an embodiment of this application. Figure 1 ;

[0025] Figure 3 This is a schematic diagram of the structure of the vertical rack in an embodiment of this application. Figure 2 ;

[0026] Figure 4 for Figure 2 Enlarged view of part A in the image;

[0027] Figure 5 This is a schematic diagram of the wire reel frame according to an embodiment of this application;

[0028] Figure 6 This is a schematic diagram of the structure of the stranding head according to an embodiment of this application;

[0029] Figure 7 This is a schematic diagram of the bundled structure of the windable optical fiber ribbon cable according to an embodiment of this application.

[0030] The numbers or letters in the attached diagram represent the names of the corresponding components:

[0031] 1. Vertical frame; 1a. Machine base; 1b. C-shaped support; 2. Horizontal frame; 3. Turntable assembly; 31. Winding drive; 311. Reducer; 312. Winding motor; 32. Central base plate; 321. Positioning groove; 33. Extending ring plate; 34. Connecting block; 35. Wire reel frame; 351. Rotating cylinder; 3511. Longitudinal groove; 3512. Step; 352. Rotating shaft; 353. Limiting block; 3531. Long strip groove; 3532. Elastic head; 36. Torque retraction drive; 361. Torque retraction motor; 362. Gear; 363. Gear 37. Guide bracket; 38. Guide block; 39. Guide roller; 4. Stranding head; 5. Stranding die; 6. Wrapping mechanism; 7. Sleeve extrusion mechanism; 8. Take-up mechanism; 9. Support column; 10. Guide wheel; 11. Cooling mechanism; 12. Fiber optic ribbon reel; 13. Connecting column; 14. Splitting reel; 141. Second rotating slot; 15. Rotating head; 151. Rectangular slot; 16. Beam-shaped optical unit; 17. Central reinforcement; 18. Second water-blocking strip; 19. Third water-blocking strip; 20. Outer sheath; 21. FRP reinforcement; 22. Tear rope. Detailed Implementation

[0032] The technical solution of the present invention will now be clearly and completely described through specific embodiments. Obviously, the described embodiments are merely some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0033] Please see Figure 1 , Figure 2 , Figure 3 and Figure 4 This application provides an optical fiber ribbon bundling processing apparatus, including a wire feeding and stranding mechanism. The wire feeding and stranding mechanism includes a vertical frame 1, a turntable assembly 3 disposed at the bottom of the vertical frame 1, a stranding head 4 disposed on the turntable assembly 3, and a stranding mold 5 disposed at the top of the vertical frame 1. The stranding mold 5 includes a cylindrical channel that causes the optical fiber ribbon to form a circular bundle. The rotation axis 352 of the turntable assembly 3 is perpendicular to the ground. Specifically, the vertical frame 1 includes a machine base 1a and an I-shaped bracket 1b fixed to the machine base 1a by bolts. The stranding mold 5 is fixed to the top of the I-shaped bracket 1b, and the stranding mold 5 is coaxial with the turntable assembly 3. The specifications of the I-shaped bracket 1b can be selected according to the diameter of the turntable assembly 3 in actual production and the space conditions of the installation site, thereby improving the adaptability and flexibility of the overall equipment layout while ensuring structural rigidity and alignment accuracy.

[0034] The turntable assembly 3 includes a twisting drive 31 mounted on a vertical frame 1, a central base plate 32 fixed to the output end of the twisting drive 31, and one or more extended ring plates 33. The extended ring plates 33 are detachably coaxially fixed to the periphery of the central base plate 32 or the periphery of another adjacent extended ring plate 33. It is understood that the weight of the turntable assembly 3 is mainly transmitted vertically from its center to the machine base 1a, while its outer edge plates are in a suspended rotating state. Therefore, the machine base 1a mainly serves a load-bearing and stabilizing function, and its table size does not need to cover the entire projected area of ​​the turntable assembly 3, allowing for a more compact design. A positioning groove 321 is provided on the central base plate 32. A connecting block 34 is welded and fixed to an expansion ring plate 33 adjacent to the central base plate 32. The connecting block 34 is inserted into the positioning groove 321, and the connecting block 34 and the central base plate 32 are connected and fixed by bolts, thereby realizing the connection and fixation between the expansion ring plate 33 and the central base plate 32. The bottom of the central base plate 32 extends to provide a support part that can support the bottom of the expansion ring plate 33. The connection between the other two adjacent expansion ring plates 33 adopts the same connection method as described above, which will not be described in detail here.

[0035] Multiple fiber optic ribbon reels 35 for mounting the fiber optic ribbon reels 12 and un-torque drive units 36 for driving the reel reels 35 to untwist are respectively arranged circumferentially on the central base plate 32 and the expansion ring plate 33. The un-torque drive units 36 are used to drive the reel reels 35 to rotate, so as to counteract the torque generated on the fiber optic ribbon by the revolution of the turntable assembly 3. An electric slip ring (not shown) is provided between the stranding drive unit 31 and the central base plate 32 to supply power to the un-torque drive units 36 on the central base plate 32. The electric slip ring is an annular electric slip ring, and the stator of the electric slip ring is fixed to the housing of the stranding drive unit 31, while the rotor end rotates with the central base plate 32. Power supply contacts (not shown) are provided between the central base plate 32 and the expansion ring plate 33, as well as between adjacent expansion ring plates 33, to supply power to the un-torque drive units 36 on each expansion ring plate 33 in stages. Specifically, regarding the power supply contacts between the central base plate 32 and the expansion ring plate 33, these contacts include static contacts on the central base plate 32 and elastic contacts on the connecting block 34. When the connecting block 34 is fixed to the central base plate 32, the elastic contacts and static contacts are pressed together to form an electrical connection. The area surrounding the power supply contacts on both the connecting block 34 and the central base plate 32 is made of insulating material. The power supply contacts are connected to their respective un-twist drive components 36 via electrical connection lines integrated within the central base plate 32 or the expansion ring plate 33. The fiber optic ribbon bundling processing device also includes a PLC controller, with the stranding drive component 31 and the un-twist drive component 36 electrically connected to the PLC controller.

[0036] During operation, firstly, based on the required number of cores, one or more expansion ring disks 33 are connected to the central base disk 32 to form a modular turntable assembly 3 of the corresponding size, enabling on-demand configuration of disk positions. The fiber optic ribbon is passed through the stranding head 4 and the stranding die 5. After the device is started, the stranding drive component 31 drives the entire turntable assembly 3 to rotate. Simultaneously, the un-twisting drive components 36 on each wire reel frame 35 rotate synchronously in opposite directions under the coordination of the PLC controller to actively counteract the torque generated by the revolution on the fiber optic ribbon. Power is stably transmitted to all un-twisting components through the electric slip rings and the cascaded power supply contacts between the central base disk 32 and the expansion ring disks 33. The fiber optic ribbons converge and wind at the stranding head 4, and are compacted and shaped into a round bundle of fiber optic ribbons through the circular channel of the stranding die 5, which can then proceed to subsequent wrapping or extrusion winding processes.

[0037] In the above-described method, the modular and detachable turntable assembly 3, consisting of a central base plate 32 and an expansion ring plate 33, allows for flexible assembly of the turntable assembly 3 according to the current fiber count requirements. When producing low-core-count products, only the necessary, lightweight central base plate 32 and a small number of expansion ring plates 33 are installed and driven, avoiding the huge ineffective energy consumption caused by the need to drive the entire large fixed rotating body under no-load or low-load conditions in traditional equipment. This achieves "on-demand drive" from the fundamental structure of the equipment, resulting in better energy-saving performance. By setting up a vertical frame 1, the rotation axis 352 of the turntable assembly 3 is perpendicular to the ground, allowing the wire feeding and stranding mechanism to make full use of vertical space, effectively reducing the lateral footprint of the equipment compared to a horizontal structure. At the same time, the vertical layout eliminates the need for the turntable assembly 3 to rely on more support frames, resulting in a simpler structure, reduced mass and radial dimensions of the rotating parts, effectively reduced rotational inertia, more stable operation, and lower start-stop energy consumption. The wire feeding and stranding mechanism integrates a de-twisting drive 36, which can actively de-twise each wire reel frame 35, effectively counteracting the torque generated on the optical fiber ribbon by the revolution of the turntable. Combined with the shaping effect of the stranding mold 5 fixed on the top of the vertical frame 1, it can achieve precise and low-damage stranding of multiple optical fiber ribbons.

[0038] Please see Figure 5In this embodiment, the cable reel frame 35 includes a rotating cylinder 351 and a rotating shaft 352 for inserting and fixing the fiber optic ribbon reel 12. The central base disk 32 and the expansion ring disk 33 are respectively provided with first rotating grooves. The rotating cylinder 351 is rotatably connected within the first rotating groove, and the fiber optic ribbon reel 12 can be accommodated within the rotating cylinder 351, achieving physical spatial isolation and avoiding potential contact, friction, and entanglement of the fiber optic ribbons released from adjacent fiber optic ribbon reels 12 during high-speed revolution, thereby ensuring the stability and low damage of the high-speed stranding process. A longitudinal groove 3511 with an upward opening is formed on the side wall of the rotating cylinder 351 along its axial direction, and a step 3512 is formed at the bottom of the longitudinal groove 3511. The step 3512 supports the rotating shaft 352 and allows the rotating shaft 352 to rotate. A limit block 353 is detachably connected within the longitudinal groove 3511 to restrict the longitudinal disengagement of the rotating shaft 352.

[0039] To further stabilize the pay-off tension, a damping pad (not shown), such as a rubber pad or a polyurethane pad, is attached to the step 3512. Simultaneously, a roughening layer, such as sandblasting, is processed or applied to the corresponding contact area of ​​the shaft 352. The total weight of the spool and shaft 352 presses down on the damping pad, and the resulting frictional torque constitutes the pay-off damping. This damping adaptively decreases as the weight of the spool changes (reducing with pay-off), thus preventing a sudden increase in pay-off tension due to the subsequent reduction in spool weight, thereby maintaining stable tension.

[0040] In another embodiment, other forms of tension control mechanisms can also be configured, such as an active tension control scheme: a torque control motor is connected to the rotating shaft 352, and the torque control motor is electrically connected to the PLC controller. The real-time reverse torque output by the torque control motor is used to precisely adjust the wire tension. Specifically, the torque control motor is detachably fixed to the outside of the rotating drum 351 by bolts. The output shaft of the torque control motor extends radially into the rotating drum 351 and is located on one side of the rotating shaft 352. A sleeve-type coupling is provided on the output shaft, and a connecting part adapted to the sleeve-type coupling is provided on the rotating shaft 352. When the torque control motor is installed in place, the sleeve-type coupling is radially fitted onto the connecting part of the rotating shaft 352. In this scheme, an additional electric slip ring needs to be added between the rotating drum 351 and the central base plate 32 or the extended ring plate 33 for independent power supply and signal transmission to the torque control motor.

[0041] In this embodiment, an elastic head 3532 is provided at one end of the limiting block 353 near the rotating shaft 352. The surface of the elastic head 3532 is smooth and specifically includes a rigid block-shaped component connected to the limiting block 353 by a spring. The limiting block 353 is connected to the rotating cylinder 351 by a locking bolt, and an elongated groove 3531 is provided on the limiting block 353 for the locking bolt to pass through. The rotating cylinder 351 is provided with bolt connection holes. The elongated groove 3531 extends longitudinally along the rotating cylinder 351, allowing the limiting block 353 to be adjusted in the longitudinal direction. By providing the elastic head 3532, on the one hand, the longitudinal axial movement impact generated by the rotating shaft 352 during equipment start-up, shutdown, or speed changes can be effectively absorbed. On the other hand, it ensures that it can maintain appropriate contact with the rotating shaft 352 under different operating conditions, providing continuous and reliable longitudinal limiting, and avoiding the failure of rigid limiting due to gaps or the additional resistance caused by excessive tightness.

[0042] In this embodiment, a guide bracket 37 is fixed to the top of the rotating cylinder 351, and a guide block 38 is rotatably connected to the guide bracket 37 via a bearing. The guide block 38 is located above the rotating cylinder 351 and is coaxially arranged with the rotating cylinder 351. Two guide rollers 39 are rotatably connected to the guide block 38, and there is a gap between the two guide rollers 39 for the optical fiber ribbon to pass through. The axis of the guide rollers 39 is perpendicular to the axis of the guide block 38.

[0043] Please see Figure 2 and Figure 6 In this embodiment, a connecting post 13 is fixed on the central base plate 32, and a twisting head 4 is fixed at the end of the connecting post 13 away from the central base plate 32. A splitter plate 14 is provided on the connecting post 13 between the central base plate 32 and the twisting head 4. There is a distance between the twisting head 4 and the twisting mold 5 for modular assembly and disassembly of the expansion ring plate 33, so that the expansion ring plate 33 can be flexibly added or removed without the need for overall disassembly when adjusting the process configuration.

[0044] The splitter plate 14 is provided with multiple second rotating slots 141, and the stranding head 4 includes a stranding plate, which is provided with multiple third rotating slots. The second rotating slots 141 and the third rotating slots are respectively rotatably connected to the rotating head 15 through bearings. The rotating head 15 is provided with a rectangular slot 151 for the optical fiber ribbon to pass through. The entrance of the rectangular slot 151 adopts a smooth arc transition to avoid the optical fiber ribbon being scratched by sharp edges when passing through quickly, and to ensure smooth guidance.

[0045] In the above structure, although the diameters of the stranding disc and the splitter disc 14 are usually set to be smaller than the central base disc 32, the movement paths of each fiber ribbon are in a gradually converging state. Therefore, the number of the second rotating slots 141 and the third rotating slots can still be reserved according to the maximum number of coil frames 35 required by the turntable assembly 3 in its maximum expanded state. Multiple second rotating slots 141 are arranged along multiple ring layers. The number and position of the second rotating slots 141 roughly correspond to the layout of the coil frames 35 when the turntable assembly 3 is fully equipped, which can perform preliminary integration and guidance of each fiber ribbon on the turntable assembly 3. Multiple third rotating slots are arranged along a single ring layer on the stranding disc. In order to achieve a smooth transition from the multi-ring layer of the splitter disc 14 to the single-ring layer of the stranding disc, the second rotating slots 141 of each ring layer on the splitter disc 14 need to be staggered in the circumferential direction to ensure that all fiber ribbons can be sequentially and without interference into the rectangular slots 151 of the corresponding rotating heads 15 of the stranding disc. Optionally, to further prevent fiber optic ribbon from tangling, a guide tube can be provided on the ribbon path between the splitter 14 and the stranding spool, with the inner diameter of the guide tube being larger than the width of the fiber optic ribbon.

[0046] Understandably, to adapt to different production process requirements, the wire distributor 14 with a different number of second rotating slots 141 and the stranding disc with a different number of third rotating slots can also be replaced, thereby achieving flexible configuration and optimization of the stranding path. It should be noted that if the diameter of the replaced wire distributor 14 and stranding disc is larger than the diameter of the central base disc 32, the wire distributor 14 and stranding disc need to be disassembled first when disassembling and assembling the expansion ring disc 33.

[0047] Please see Figure 5 In this embodiment, the un-torque drive 36 includes an un-torque motor 361 fixed on the central base plate 32 and the extended ring plate 33, a gear 362 fixed on the output end of the un-torque motor 361, and a gear ring 363 fixed on the outer peripheral wall of the rotating cylinder 351. The gear 362 meshes with the gear ring 363, and the un-torque motor 361 is specifically a servo motor. In another embodiment, only one un-torque motor 361 may be provided on the central base plate 32 or the extended ring plate 33, and the multiple coil frames 35 on the plate body may be driven to perform un-torque motion synchronously through a transmission mechanism connected to the output end of the un-torque motor 361.

[0048] Please see Figure 3 In this embodiment, the twisting drive 31 includes a reducer 311 and a twisting motor 312 fixed on the vertical frame 1. Specifically, it can be a servo motor. The output end of the twisting motor 312 is connected to the input end of the reducer 311 through a synchronous belt and synchronous pulley structure. The central base plate 32 is fixedly connected to the output end of the reducer 311. The vertical frame 1 is also provided with support rollers, which roll and support the bottom of the central base plate 32.

[0049] Please see Figure 1In this embodiment, a wrapping mechanism 6 is also provided on the vertical frame 1 above the stranding mold 5, for wrapping a first water-blocking tape on the stranded optical fiber ribbon. After the optical fiber ribbon is stranded into a bundle and passed through the stranding mold 5 for shaping, the first water-blocking tape is immediately wrapped by the wrapping mechanism 6 to form a bundled optical unit 16. The optical fiber ribbon bundling processing device also includes a horizontal frame 2, on which a sleeve extrusion mechanism 7 and a take-up mechanism 8 are arranged sequentially along the material flow direction. The sleeve extrusion mechanism 7 is used to extrude a loose sleeve on the outside of the bundled optical unit 16. The horizontal frame 2 is provided with guide wheels 10 for guiding the bundled optical fiber ribbon from the vertical direction to the horizontal direction. The horizontal frame 2 is provided with a support column 9, and multiple guide wheels 10 are rotatably connected to the support column 9 respectively. A cooling mechanism 11 is also provided on the horizontal frame 2 between the take-up mechanism 8 and the sleeve extrusion mechanism 7, which can be an air cooling device and / or a water tank cooling device. The sleeve extrusion mechanism 7, the winding mechanism 8, and the wrapping mechanism 6 are electrically connected to the PLC controller. The sleeve extrusion mechanism 7, the wrapping mechanism 6, and the winding mechanism 8 adopt existing technology, which will not be described in detail here.

[0050] Please see Figure 7 This invention also discloses a bundled structure windable fiber ribbon cable, using existing windable fiber ribbon technology. It includes multiple bundled optical units 16 formed using a fiber ribbon bundling processing device. In a preferred embodiment, loose tubes can be extruded onto the bundled optical units 16. It also includes a central reinforcement 17, a cable core formed by multiple bundled optical units 16 surrounding the central reinforcement 17 through at least two layers of SZ stranded structure, a second water-blocking tape 18 disposed between adjacent SZ stranded structures, a third water-blocking tape 19 disposed outside the cable core, and an outer sheath 20 located outside the third water-blocking tape 19. The outer sheath 20 has at least one FRP (fiber reinforced plastic) reinforcement 21 embedded inside to improve tensile strength and bending modulus. A tear cord 22 is also provided on the inner side of the outer sheath 20. It should be noted that, except for the bundled optical units 16, the processing methods for the remaining structures of this bundled structure windable fiber ribbon cable all adopt existing technologies and will not be described in detail in this embodiment.

[0051] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An optical fiber ribbon bundling processing device, comprising a wire feeding and stranding mechanism, characterized in that: The wire feeding and stranding mechanism includes a vertical frame, a turntable assembly disposed at the bottom of the vertical frame, a stranding head disposed on the turntable assembly, and a stranding mold disposed at the top of the vertical frame. The rotation axis of the turntable assembly is perpendicular to the ground. The turntable assembly includes a stranding drive unit mounted on the vertical frame, a central base plate fixed to the output end of the stranding drive unit, and zero or at least one extended ring plate, wherein the extended ring plate is detachably coaxially fixed to the periphery of the central base plate or the periphery of another adjacent extended ring plate. The central base disk and the expansion ring disk are respectively provided with multiple cable trays for mounting fiber optic ribbon cable trays and untwisting drive components for driving the cable trays to untwise along the circumferential direction. An electric slip ring is provided between the twisting drive component and the central base disk for supplying power to the untwisting drive component on the central base disk. Power supply contacts are provided between the central base disk and the expansion ring disk, as well as between adjacent expansion ring disks, for supplying power to the untwisting drive component on each expansion ring disk in stages.

2. The fiber optic ribbon bundling processing apparatus according to claim 1, characterized in that: The cable reel frame includes a rotating cylinder and a rotating shaft for inserting and fixing the fiber optic cable reel. The central base plate and the expansion ring plate are respectively provided with a first rotating groove. The rotating cylinder is rotatably connected in the first rotating groove. A longitudinal groove with an upward opening is opened on the side wall of the rotating cylinder along its axial direction, and a step is formed at the bottom of the longitudinal groove. The step is used to support the rotating shaft and allow the rotating shaft to rotate. A limit block is detachably connected in the longitudinal groove to limit the longitudinal disengagement of the rotating shaft.

3. The fiber optic ribbon bundling processing apparatus according to claim 2, characterized in that: A damping pad is provided on the step, and a rough layer is provided on the rotating shaft that contacts the damping pad.

4. The fiber optic ribbon bundling processing apparatus according to claim 2, characterized in that: The limiting block is provided with an elastic head at one end near the rotating shaft. The surface of the elastic head is smooth. The limiting block is connected to the rotating cylinder by a locking bolt. The limiting block is provided with an elongated groove for the locking bolt to pass through. The elongated groove extends longitudinally along the rotating cylinder.

5. The fiber optic ribbon bundling processing apparatus according to claim 2, characterized in that: A guide bracket is fixed to the top of the rotating cylinder, and a guide block is rotatably connected to the guide bracket. The guide block is located above the rotating cylinder and is coaxially arranged with the rotating cylinder. Two guide rollers are rotatably connected to the guide block, and there is a gap between the two guide rollers for the optical fiber ribbon to pass through. The axis of the guide roller is perpendicular to the axis of the guide block.

6. The optical fiber ribbon bundling processing apparatus according to claim 1, characterized in that: A connecting post is fixed on the central base plate, and the twisting head is fixed at the end of the connecting post away from the central base plate. A splitter plate is provided on the connecting post between the central base plate and the twisting head. The splitter plate is provided with a plurality of second rotating slots. The twisting head includes a twisting disc, and the twisting disc is provided with a plurality of third rotating slots. A rotating head is rotatably connected in each of the second rotating slots and the third rotating slots. A rectangular slot for the optical fiber ribbon to pass through is provided through the rotating head.

7. The fiber optic ribbon bundling processing apparatus according to claim 2, characterized in that: The torque-reversing drive includes a torque-reversing motor fixed on the central base plate and the extended ring plate respectively, a gear fixed on the output end of the torque-reversing motor, and a gear ring fixed on the outer peripheral wall of the rotating cylinder, wherein the gear meshes with the gear ring.

8. The fiber optic ribbon bundling processing apparatus according to claim 2, characterized in that: The stranding drive includes a reducer and a stranding motor fixed on the vertical frame. The output end of the stranding motor is connected to the input end of the reducer. The central base plate is fixedly connected to the output end of the reducer. The vertical frame is also provided with support rollers, which roll and support the bottom of the central base plate.

9. The fiber optic ribbon bundling processing apparatus according to claim 1, characterized in that: The vertical frame is also provided with a wrapping mechanism above the stranding mold, which is used to wrap the first water-blocking tape on the stranded optical fiber ribbon to form a bundled optical unit. The optical fiber ribbon bundling processing device also includes a horizontal frame, on which a sleeve extrusion mechanism and a take-up mechanism are arranged in sequence along the material flow direction. The horizontal frame is provided with guide wheels for guiding the bundled optical unit from the vertical direction to the horizontal direction.

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