Multi-core lighting optical fiber, twisting device and use method thereof

Abstract

The present invention discloses a multi-core lighting optical fiber, a twisting device and a method for using the same, comprising a plurality of optical fiber core groups, wherein the plurality of optical fiber core groups are each formed by spirally winding a plurality of outer optical fiber cores around a plurality of inner optical fiber cores, and the plurality of optical fiber core groups are tightly wrapped with a reinforcing tube arranged therein in a reciprocating spiral twisting form. The present invention forms an optical fiber core group by twisting a plurality of optical fiber cores together in a spiral shape, and adds a reinforcing tube inside the plurality of optical fiber core groups formed in a reciprocating spiral twisting form, thereby improving the tensile strength of the multi-core lighting optical fiber and extending the service life of the optical fiber. The reciprocating twisting mechanism is utilized to avoid twisting and damage of the optical fiber core during the twisting process, and a positioning frame is added to the twisting structure to enable the positioning and fixing of the optical fiber core group during the reciprocating twisting process, so that the optical fiber core group is tightly attached to the outer wall of the reinforcing tube, thereby avoiding the traditional wire binding operation and reducing the processing cost.

Description

Technical Field

[0001] The present invention relates to the technical field of lighting optical fiber applications, and in particular to a multi-core lighting optical fiber, a twisting device and a method of using the same. Background Art

[0002] In the field of lighting, fiber optic lighting has been widely used due to its unique advantages. It can transmit light over long distances, separate the light source from the lighting area, and meet the needs of some special places. At the same time, it has good flexibility and can be bent and shaped at will. It also has high safety, such as no risk of electric shock and no heat generation.

[0003] However, existing single-core lighting optical fibers have obvious shortcomings. Their luminous intensity and uniformity are limited. In scenes with high requirements for lighting effects, such as large shopping malls, theaters, and squares, single-core lighting optical fibers are difficult to create an ideal lighting atmosphere and cannot meet diverse lighting needs.

[0004] Multi-core lighting optical fibers face many challenges during the twisting process. Multiple optical fibers are prone to entanglement and misalignment, which not only causes damage to the optical fibers, affects the transmission performance of the optical fibers, reduces the light transmission efficiency, but also shortens the service life of the optical fibers. Traditional unidirectional spiral twisting increases the torque of the optical fiber core, and reaching a certain torque will cause damage to the optical fiber core. At the same time, reciprocating spiral twisting requires an additional wire binding step, which increases the production cost.

[0005] Therefore, the present invention provides a multi-core lighting optical fiber, a twisting device and a method of using the same. Summary of the Invention

[0006] The technical problem to be solved by the present invention is to provide a multi-core lighting optical fiber to improve the luminous intensity and uniformity of the optical fiber; at the same time, a twisting device for the multi-core lighting optical fiber and a method of use thereof are provided to solve the problems of easy damage to the optical fiber, low twisting efficiency and quality in the existing twisting process.

[0007] In order to solve the above technical problems, the present invention adopts a technical solution: providing a multi-core lighting optical fiber, comprising a plurality of optical fiber core groups, wherein the plurality of optical fiber core groups are each configured by spirally winding a plurality of outer optical fiber cores around a plurality of inner optical fiber cores;

[0008] Several optical fiber core groups are tightly wrapped with a reinforcing tube arranged inside in a reciprocating spiral twisted form to avoid torque accumulation and enhance the tensile strength of the lighting optical fiber. At the same time, a protective sleeve is injection-molded on the outside to protect the optical fiber core group.

[0009] Through the above technical solution, multiple optical fiber cores are twisted and fixed in a spiral winding manner, and the optical fiber core group formed after twisting is then arranged on the outer wall of the reinforcing tube in a reciprocating spiral twisting manner, thereby improving the tensile strength of the lighting optical fiber. At the same time, the protective sleeve arranged on its outer wall can reduce damage to the optical fiber core group, thereby extending the service life of the multi-core lighting optical fiber.

[0010] A multi-core lighting optical fiber twisting device is also provided, including a positioning base plate for mounting and fixing the coaxial cores of multiple mechanisms;

[0011] A pay-off mechanism detachably mounted on the upper surface of the positioning base plate near one end to achieve stable and continuous pay-off of multiple optical fiber core groups;

[0012] The arrangement frame is installed in the middle of the pay-off mechanism through multiple connecting rods to allow several optical fiber core groups to be neatly arranged and distributed;

[0013] Multiple tensioning assemblies are circumferentially bolted to one end of the arrangement frame to adjust the tension of the optical fiber core group during the twisting process;

[0014] Bolts are connected to the twisting mechanism near the middle of the upper surface of the positioning base plate to achieve reciprocating twisting of multiple optical fiber core groups on the outer wall of the reinforcement tube;

[0015] Bolts are connected to the injection molding machine on the upper surface of the positioning base plate to inject a protective cover on the outer wall of the twisted lighting optical fiber;

[0016] Bolts are connected to the traction mechanism on the upper surface of the positioning base plate near the other end to pull and reel the processed lighting optical fiber;

[0017] Among them, several optical fiber core groups pass through the arrangement frame, twisting mechanism, injection molding machine and traction mechanism in sequence;

[0018] The reinforcing tube passes through the pay-off mechanism, the arrangement frame, the twisting mechanism, the injection molding machine and the traction mechanism in sequence, and the two ends thereof are respectively connected to the pay-off machine and the rewinding machine.

[0019] The present invention is further configured as follows: the pay-off mechanism includes a mounting frame connected to the top of the positioning base plate by a fixing seat bolt, a plurality of clamping frames are fixedly connected to one side of the mounting frame in a uniform circumferential direction, the end faces of the plurality of clamping frames are rotatably connected to the fiber core reels, one end of the rotating shaft provided in the plurality of fiber core reels is fixedly connected to a driven gear, and the other end is engaged with a limit ring;

[0020] The outer walls of the plurality of driven gears are meshedly connected with a driving gear ring, which is meshedly connected to a driving gear sleeved on the output shaft of the pay-off motor, and the pay-off motor is bolted to the other side of the mounting frame near the bottom.

[0021] Through the above technical solution, the pay-off motor is started so that its output shaft drives the active gear on the end face to rotate, which drives the meshing drive gear ring to rotate, thereby driving the rotation of multiple meshing driven gears, and then the fiber core reel is rotated on the bracket, so that a stable pay-off operation can be achieved during the twisting process. The limit ring can be used to limit and fix the position of the fiber core reel installed on the bracket to prevent it from falling during use.

[0022] The present invention is further configured as follows: the driving gear ring is rotatably connected to one side of the mounting frame near the edge, and the tooth blocks arranged on its surface are generally L-shaped, and the rotating gear ring is respectively engaged with the driving gear and the driven gear through the tooth blocks.

[0023] The above technical solution facilitates the driving gear ring to rotate stably on the mounting frame, and the L-shaped setting of the gear block enables the driving gear and the driven gear on both sides to be stably engaged with it.

[0024] The present invention is further configured as follows: the arrangement frame includes a plurality of guide tubes arranged equidistantly in the circumferential direction, and a lead ring plate and an outlet ring plate respectively mounted at both ends of the guide tubes, wherein the lead ring plate is fixedly connected to the middle position of the mounting frame by a plurality of connecting rods;

[0025] The plurality of guide tubes are arranged to converge from the lead-in ring plate toward the outlet ring plate, and the lead-in ring plate and the outlet ring plate are respectively provided with a plurality of lead-in holes and outlet holes at equal intervals along the circumferential direction, and the two ends of the plurality of guide tubes are respectively connected to the lead-in holes and the outlet holes;

[0026] The inner walls of the plurality of lead holes are all embedded with embedded sleeves, and the outer walls of the plurality of guide tubes are all opened with a plurality of weight-reducing holes, and the whole is hollowed out.

[0027] The above technical solution facilitates the use of multiple connecting rods to install the entire arrangement rack in the middle of the mounting rack so that it is coaxially arranged.

[0028] The multiple optical fiber core groups can be gradually retracted intact under the action of the guide tube, so that the diameter of the multiple optical fiber core groups gradually approaches the stranding disk, which is convenient for stranding and transportation;

[0029] The embedded sleeve set inside the lead-in hole can protect the outer wall of the entering optical fiber core group to prevent friction damage during movement. At the same time, the hollow guide tube not only plays a guiding role but also reduces the overall weight, thereby reducing cost investment.

[0030] The present invention is further configured as follows: the tensioning assembly includes a frame body bolted to one side of the wire ring plate near the edge and facing the wire-releasing mechanism, and the frame body is located on both sides of the wire-lead hole;

[0031] Movable grooves are symmetrically provided on both sides of the frame body near the end surfaces, and sliding rods are installed in the two movable grooves from top to bottom and fixed with nuts. The outer walls of the two sliding rods are slidably connected with a slide plate, and the bottom bolts of the slide plate are connected to a tensioning wheel. Two tensioning springs are tightly provided on the top of the slide plate, and the two tensioning springs are respectively sleeved on the outside of the two sliding rods, and the other ends of the two tensioning springs are pressed against the inner top of the movable groove.

[0032] Through the above technical solution, the tensioning wheel in the tensioning assembly is squeezed by the optical fiber core group pulled by the forward and reverse twisting, so that the tensioning wheel drives the slide plate to slide on the slide rod and squeezes the tensioning spring on the top. The reset elasticity of the tensioning spring drives the tensioning wheel to dynamically adjust the tensioning of the optical fiber core group, ensuring the stable movement of the optical fiber core group.

[0033] The present invention is further configured as follows: the twisting mechanism comprises a connecting plate connected to the positioning base plate via a plurality of corner block bolts, and three vertical plates are fixedly connected to the top of the connecting plate at equal intervals;

[0034] The side walls of the three vertical plates are rotatably connected to toothed wheels near the bottom, one of the toothed wheels is arranged opposite to the other two toothed wheels, and the outer walls of the three toothed wheels are meshedly connected to toothed belts, the inner wall of one of the toothed belts is meshedly connected to a positioning disk at one end away from the toothed wheel, and the inner walls of the other two toothed belts are meshedly connected to a winding disk at one end away from the toothed wheel. A rotating shaft is provided through the three vertical plates near the bottom, and the outer wall of the rotating shaft is interference-connected to the three toothed wheels, and one end of the rotating shaft is fixedly connected to the output shaft of the winding motor installed on the side wall of one of the vertical plates;

[0035] The two twisting disks and one positioning disk are respectively rotatably connected to the three vertical plates near the top position. The two twisting disks are evenly provided with multiple limiting holes along the circumferential direction. The inner wall of the positioning disk is provided with a positioning frame, and the inner wall of the positioning frame is provided with an arc groove equal to the optical fiber core group.

[0036] Through the above technical solution, the three vertical plates can be used to separate the stranding disk and the positioning disk at equal distances, and a certain relative distance is left during the stranding process to ensure the stable feeding effect of the optical fiber core group;

[0037] The twisting motor is started to drive the shaft at the end face of the output shaft to rotate, thereby driving the three toothed wheels on the vertical plate to rotate. The toothed belt is then used to slowly rotate the two twisting disks and the positioning disk, so that multiple groups of optical fiber cores are wound in an S-shaped spiral on the reinforcement tube. At the same time, the positioning frame built into the positioning disk can tightly fit the optical fiber core group with a certain degree of plastic deformation to the outer wall of the reinforcement tube.

[0038] When a certain twisting pitch is reached, the twisting motor reverses, causing the two twisting discs and one positioning disc to slowly rotate in opposite directions, allowing multiple optical fiber core groups to be wound spirally in the Z direction on the reinforcing tube. At the same time, the positioning frame built into the positioning disc can tightly fit the optical fiber core group with a certain degree of plastic deformation to the outer wall of the reinforcing tube, thereby completing the twisting operation of the multi-core optical fiber;

[0039] By using the multiple limiting holes, multiple groups of optical fiber cores can be distributed equidistantly around the circumference, and their mutual stability can be guaranteed during twisting to avoid extrusion damage. At the same time, the arc grooves provided on the inner wall of the positioning frame can compress the multiple groups of optical fiber cores twisted on the reinforcing tube accordingly, so that they plastically fit the outer wall of the reinforcing tube.

[0040] The present invention is further configured as follows: the traction mechanism includes a cooling cavity connected to the positioning base plate through a support frame bolt and a cavity cover plate that is bolted to the cavity after covering the cooling cavity;

[0041] Traction holes are provided at the centers of both ends of the cooling cavity, and a plurality of traction rollers are evenly connected to the inner wall of the cooling cavity near one end, and the end faces of the traction rollers extend out of the outer wall of the cooling cavity. A traction wheel is sleeved at the middle positions of the plurality of traction rollers, and a driven wheel is sleeved at the end faces of the plurality of traction rollers. A traction motor is bolted to the bottom of the cooling cavity, and a driving wheel is sleeved at the output end of the traction motor. The driving wheel and the plurality of driven wheels are sequentially sleeved with a synchronous belt to realize synchronous transmission.

[0042] Two screws are provided through the top of the cavity cover and directly above the multiple traction rollers, and are limited and fixed by external nuts. The bottoms of the two screws are fixedly connected to a U-shaped frame, and the inner wall of the U-shaped frame is evenly rotated and connected to multiple auxiliary wheels, and the auxiliary wheels correspond to the multiple traction wheels one by one. The outer walls of the two screws are each provided with a compression spring, and the two ends of the two compression springs are respectively pressed against the cavity cover and the U-shaped frame.

[0043] Through the above technical solution, the cooling cavity can be used to store the internal cooling medium, and the cavity cover can seal the interior thereof and fix the auxiliary wheel at the same time;

[0044] Start the traction motor to drive the driving wheel on the output shaft to rotate, and use multiple synchronous belts to rotate the multiple driven wheels connected to the transmission, thereby driving the traction wheel on the internal traction roller to rotate. Then, cooperate with the compression spring to press the auxiliary wheel on the multi-core lighting optical fiber to pull the multi-core lighting optical fiber with the protective sleeve injected;

[0045] By using two screws that pass through the cavity cover, the auxiliary wheel can be squeezed by the multi-core lighting optical fiber entering from the bottom, driving the U-shaped frame to slide on the cavity cover through the screws and squeeze the compression spring. By using the reset elasticity of the step-in spring, the auxiliary wheel can be equipped with a traction wheel to compress the multi-core lighting optical fiber, making it convenient for traction and pulling.

[0046] The present invention is further configured as follows: a drain pipe is fixedly connected to the rear wall of the cooling cavity near the bottom horizontal plane of the traction perforation, and a water inlet pipe is fixedly connected to the top of the cavity cover near one end.

[0047] Through the above technical solution, it is convenient to use traction perforations to guide the twisted injection-molded multi-core optical fibers, so that they can be quickly cooled by the internal cooling medium when passing through the cooling cavity, thereby fixing the twisted multi-core optical fibers, and the coordinated use of the water inlet pipe and the drainage pipe can ensure the circulation of the internal cooling medium.

[0048] A method for using a multi-core lighting optical fiber twisting device is also provided, comprising the following steps:

[0049] S1. First, multiple optical fiber core groups and reinforcement tubes are simultaneously led out from the pay-off mechanism toward the traction mechanism, passing through the arrangement frame, stranding mechanism, injection molding machine and traction mechanism in sequence, and connected to the external winder;

[0050] S2, then injecting cooling medium into the cooling cavity through the water inlet pipe and using the drainage pipe to achieve a connected circulation, so as to achieve rapid cooling of the protective sleeve after injection molding;

[0051] S3. Then, when the external control system receives the start command, it sends an initialization signal to each station drive mechanism at the same time, specifically including:

[0052] S31. Send a signal to the traction motor in the traction mechanism to drive the driving wheel on the output shaft to rotate, and use multiple synchronous belts to rotate the multiple driven wheels connected to the traction mechanism, thereby driving the traction wheel on the internal traction roller to rotate. Then, the auxiliary wheel pressed against the multi-core lighting optical fiber by the compression spring is used to pull the multi-core lighting optical fiber with the injection-molded protective sleeve.

[0053] S32, sending a signal to the injection molding machine, causing its internal heating structure to heat the protective cover material, so that it forms a fluid that covers the surface of the optical fiber core group, and after rapid cooling inside the cooling cavity, the protective cover fixes the internally twisted multi-core optical fibers;

[0054] S33. Send a signal to the twisting motor in the twisting mechanism to drive the rotating shaft at the end face of the output shaft to rotate, thereby driving the three toothed wheels on the vertical plate to rotate. Then, the toothed belt is used to drive the two twisting disks and the positioning disk to slowly rotate, so that the multiple optical fiber core groups are wound in an S-shaped spiral on the reinforcement tube. At the same time, the positioning frame built into the positioning disk can cooperate with the positioning frame to tightly fit the optical fiber core group with a certain degree of plastic deformation to the outer wall of the reinforcement tube.

[0055] When a certain twisting pitch is reached, the twisting motor reverses, causing the two twisting discs and one positioning disc to slowly rotate in opposite directions, allowing multiple optical fiber core groups to be wound spirally in the Z direction on the reinforcing tube. At the same time, the positioning frame built into the positioning disc can tightly fit the optical fiber core group with a certain degree of plastic deformation to the outer wall of the reinforcing tube, thereby completing the twisting operation of the multi-core optical fiber;

[0056] At the same time, the tensioning wheel inside the tensioning assembly is squeezed by the optical fiber core group pulled by the forward and reverse twisting, so that the tensioning wheel drives the slide plate to slide on the slide rod and squeezes the tensioning spring on the top. The restoring elasticity of the tensioning spring drives the tensioning wheel to dynamically adjust the tension of the optical fiber core group to ensure the stable movement of the optical fiber core group.

[0057] S34. Send a signal to the pay-off motor in the pay-off mechanism, causing its output shaft to drive the driving gear on the end face to rotate, thereby driving the meshing drive gear ring to rotate, thereby driving the rotation of multiple meshing driven gears, and then causing the fiber core reel to rotate on the clamping frame, so that a stable pay-off operation can be achieved during the stranding process;

[0058] S35. Send signals to the unwinding machine and the rewinding machine at both ends of the reinforcement tube to realize the unwinding of the reinforcement tube and the rewinding operation after the multi-core lighting optical fiber is formed.

[0059] The beneficial effects of the present invention are as follows:

[0060] 1. The multi-core illumination optical fiber, twisting device, and method of use proposed in the present invention enhance the tensile strength of the multi-core illumination optical fiber and extend its service life by twisting multiple optical fiber cores together in a helical shape to form an optical fiber core group. A reinforcing tube is added to the multiple optical fiber core groups formed by the reciprocating helical twisting.

[0061] 2. The multi-core lighting optical fiber, twisting device, and method of use proposed in this invention prevent high energy loss by fixing the rotating payout mechanism during the traditional twisting process. Furthermore, the reciprocating twisting mechanism is used to prevent twisting and damage to the optical fiber core during the twisting process.

[0062] 3. The present invention proposes a multi-core lighting optical fiber, a twisting device and a method of use thereof. By adding a positioning frame in the twisting structure, it is possible to position and fix the optical fiber core group during the reciprocating twisting process, so that it fits tightly to the outer wall of the reinforcing tube, avoiding the traditional wire binding operation and thereby reducing processing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0063] Figure 1 This is an exploded view of the multi-core lighting optical fiber of the present invention;

[0064] Figure 2 This is a first structural diagram of the multi-core lighting optical fiber twisting device of the present invention;

[0065] Figure 3 This is a second structural diagram of the multi-core lighting optical fiber twisting device of the present invention;

[0066] Figure 4 It is a front view of the multi-core lighting optical fiber twisting device of the present invention;

[0067] Figure 5 This is a first structural diagram of the pay-off mechanism in the multi-core lighting optical fiber twisting device of the present invention;

[0068] Figure 6 This is a second structural diagram of the pay-off mechanism in the multi-core lighting optical fiber twisting device of the present invention;

[0069] Figure 7 This is a diagram of a first connection structure of the arrangement frame and the tensioning assembly in the multi-core lighting optical fiber twisting device of the present invention;

[0070] Figure 8 This is a second connection structure diagram of the arrangement frame and the tensioning assembly in the multi-core lighting optical fiber twisting device of the present invention;

[0071] Figure 9 This is a structural diagram of the arrangement frame in the multi-core lighting optical fiber twisting device of the present invention;

[0072] Figure 10 An exploded view of the arrangement frame in the multi-core lighting optical fiber twisting device of the present invention;

[0073] Figure 11 This is a structural diagram of the tensioning assembly in the multi-core lighting optical fiber twisting device of the present invention;

[0074] Figure 12 This is a first structural diagram of the twisting mechanism in the multi-core lighting optical fiber twisting device of the present invention;

[0075] Figure 13 This is a second structural diagram of the twisting mechanism in the multi-core lighting optical fiber twisting device of the present invention;

[0076] Figure 14This is a first structural diagram of the pulling mechanism in the multi-core lighting optical fiber twisting device of the present invention;

[0077] Figure 15 This is a second structural diagram of the pulling mechanism in the multi-core lighting optical fiber twisting device of the present invention.

[0078] In the picture:

[0079] 1. Optical fiber core group;

[0080] 2. Strengthen the pipe;

[0081] 3. Protective cover;

[0082] 4. Pay-off mechanism; 41. Fixing seat; 42. Mounting frame; 43. Clamping frame; 44. Fiber core reel; 45. Driven gear; 46. Limiting ring; 47. Driving gear ring; 48. Pay-off motor; 49. Driving gear;

[0083] 5. Arrangement rack; 51. Lead ring plate; 511. Lead hole; 512. Embedded sleeve; 52. Outlet ring plate; 521. Outlet hole; 53. Guide tube; 531. Weight reduction hole;

[0084] 6. Tensioning assembly; 61. Frame; 62. Movable slot; 63. Slide rod; 64. Slide plate; 65. Tensioning pulley; 66. Tensioning spring;

[0085] 7. Twisting mechanism; 71. Corner block; 72. Connecting plate; 73. Vertical plate; 74. Toothed wheel; 75. Toothed belt; 76. Twisting disc; 761. Limiting hole; 77. Positioning disc; 771. Positioning frame; 78. Rotating shaft; 79. Twisting motor;

[0086] 8. Injection molding machine;

[0087] 9. Traction mechanism; 91. Cooling chamber; 911. Support frame; 912. Traction perforation; 913. Drain pipe; 914. Traction roller; 915. Traction wheel; 916. Driven wheel; 917. Synchronous belt; 918. Traction motor; 919. Driving wheel; 92. Chamber cover; 921. Water inlet pipe; 922. Screw; 923. U-shaped frame; 924. Compression spring; 925. Auxiliary wheel;

[0088] 10. Position the base plate. DETAILED DESCRIPTION

[0089] The preferred embodiments of the present invention are described in detail below with reference to the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more precise definition of the protection scope of the present invention.

[0090] like Figure 1As shown, a multi-core lighting optical fiber includes several optical fiber core groups 1. Each of the optical fiber core groups 1 is configured by spirally winding multiple outer optical fiber cores around multiple inner optical fiber cores. The multiple optical fiber cores are twisted and fixed in a spirally wound manner, which can improve the overall strength of the optical fiber core group 1 and facilitate the subsequent twisting operation.

[0091] Several optical fiber core groups 1 are tightly wrapped with a reinforcing tube 2 arranged inside in a reciprocating spiral twisted form to avoid torque accumulation and enhance the tensile strength of the lighting optical fiber. At the same time, a protective sleeve 3 is injection-molded on the outside. The protective sleeve 3 arranged on its outer wall can reduce damage to the optical fiber core group 1, thereby extending the service life of the multi-core lighting optical fiber.

[0092] like Figure 2-Figure 6 As shown, a multi-core lighting optical fiber twisting device includes a positioning base plate 10 for rapid installation and fixation of the coaxial centers of multiple mechanisms, a pay-off mechanism 4 detachably mounted on the upper surface of the positioning base plate 10 near one end, so as to achieve stable and continuous pay-off of several optical fiber core groups 1, the pay-off mechanism 4 includes a mounting frame 42 bolted to the top of the positioning base plate 10 through a fixing seat 41, a plurality of clamping frames 43 are evenly fixedly connected to one side of the mounting frame 42 in the circumferential direction, the end faces of the plurality of clamping frames 43 are rotatably connected to the fiber core reels 44, one end of the rotating shaft provided in the plurality of fiber core reels 44 is fixedly connected to a driven gear 45, and the other end is engaged with a limiting ring 46, and the limiting ring 46 can be used to limit and fix the position of the fiber core reels 44 mounted on the clamping frame 43 to prevent them from falling during use, the outer walls of the plurality of driven gears 45 are meshedly connected to a driving gear ring 47, and the driving gear ring 47 is rotatably connected to the mounting frame One side of 42 is close to the edge, and the tooth blocks arranged on its surface are generally L-shaped. The rotating gear ring 47 is meshed and connected to the driving gear 49 and the driven gear 45 through the tooth blocks, so that the driving gear ring 47 can rotate stably on the mounting frame 42 when it rotates, and the L-shaped setting of the tooth blocks is utilized so that the driving gear 49 and the driven gear 45 on both sides can be stably meshed and connected thereto. The driving gear ring 47 is meshed and connected to the driving gear 49 sleeved on the output shaft of the pay-off motor 48, and the pay-off motor 48 is bolted to the other side of the mounting frame 42 near the bottom. Start the pay-off motor 48 so that its output shaft drives the driving gear 49 on the end face to rotate, so that it drives the meshed driving gear ring 47 to rotate, thereby driving the rotation of multiple meshed driven gears 45, and then the fiber core reel 44 is rotated on the clamping frame 43, so that it can achieve stable pay-off operation during the stranding process.

[0093] like Figure 4 and Figure 7-10As shown, a layout frame 5 is installed in the middle of the pay-off mechanism 4 through multiple connecting rods to arrange and distribute several optical fiber core groups 1 in an orderly manner. The layout frame 5 includes multiple guide tubes 53 arranged equidistantly in the circumferential direction and a lead ring plate 51 and a lead ring plate 52 respectively installed at both ends of the guide tube 53. The lead ring plate 51 is fixedly connected to the middle position of the mounting frame 42 through multiple connecting rods, which facilitates the use of multiple connecting rods to install the entire layout frame 5 in the middle position of the mounting frame 42 so that it is in a coaxial arrangement.

[0094] The plurality of guide tubes 53 are arranged to converge from the lead-in ring plate 51 toward the outlet ring plate 52. The lead-in ring plate 51 and the outlet ring plate 52 are respectively provided with a plurality of lead-in holes 511 and outlet holes 521 at equal intervals along the circumferential direction. The ends of the plurality of guide tubes 53 are respectively connected to the lead-in holes 511 and the outlet holes 521. This allows the plurality of optical fiber core groups 1 to be gradually retracted intact under the action of the guide tubes 53, so that the diameter of the plurality of optical fiber core groups 1 gradually approaches the stranding drum 76, facilitating stranding and transportation.

[0095] The inner walls of the multiple lead holes 511 are embedded with embedded sleeves 512, and the outer walls of the multiple guide tubes 53 are opened with multiple weight-reducing holes 531. The whole is hollowed out. The embedded sleeves 512 arranged inside the lead holes 511 can protect the outer wall of the entering optical fiber core group 1 to prevent friction damage during movement. At the same time, the hollow guide tubes 53 not only play a guiding role but also reduce the overall weight, thereby reducing cost investment.

[0096] like Figure 7 and Figure 11 As shown, multiple tensioning assemblies 6 are circumferentially bolted to one end of the arrangement frame 5 to adjust the tension of the optical fiber core group 1 during the stranding process. The tensioning assembly 6 includes a frame body 61 bolted to one side of the lead ring plate 51 near the edge and facing the pay-off mechanism 4. At the same time, the frame body 61 is located on both sides of the lead hole 511.

[0097] Movable grooves 62 are symmetrically provided on both sides of the frame 61 near the end faces. Slide rods 63 are installed in the two movable grooves 62 from top to bottom and fixed with nuts. The outer walls of the two slide rods 63 are slidably connected to the slide plate 64. The bottom bolts of the slide plate 64 are connected to the tensioning wheel 65. The top of the slide plate 64 is tightly provided with two tensioning springs 66, and the two tensioning springs 66 are respectively sleeved on the outside of the two slide rods 63. At the same time, the other ends of the two tensioning springs 66 are tightly pressed against the inner top of the movable groove 62. The tensioning wheel 65 in the tensioning assembly 6 is squeezed by the optical fiber core group 1 pulled by the forward and reverse twisting, so that the tensioning wheel 65 drives the slide plate 64 to slide on the slide rod 63 and squeezes the tensioning spring 66 on the top. The reset elasticity of the tensioning spring 66 drives the tensioning wheel 65 to dynamically adjust the tension of the optical fiber core group 1 to ensure stable movement of the optical fiber core group 1.

[0098] like Figure 4 、 Figure 12 and Figure 13 As shown, a twisting mechanism 7 is bolted to the upper surface of the positioning base plate 10 near the middle to achieve reciprocating twisting of multiple optical fiber core groups 1 on the outer wall of the reinforcement tube 2. The twisting mechanism 7 includes a connecting plate 72 bolted to the positioning base plate 10 through multiple corner blocks 71. Three vertical plates 73 are fixedly connected to the top of the connecting plate 72 at equal intervals. The three vertical plates 73 can be used to equidistantly separate the twisting disk 76 and the positioning disk 77, and a certain relative distance is left during the twisting process to ensure stable feeding of the optical fiber core group 1.

[0099] The side walls of the three vertical plates 73 are rotatably connected to toothed wheels 74 near the bottom. One of the toothed wheels 74 is arranged relative to the other two toothed wheels 74. The outer walls of the three toothed wheels 74 are meshed with toothed belts 75. The inner wall of one toothed belt 75 is meshed with a positioning plate 77 at one end away from the toothed wheel 74. The inner walls of the other two toothed belts 75 are meshed with a capstan 76 at one end away from the toothed wheel 74. A rotating shaft 78 is provided through the three vertical plates 73 near the bottom, and the outer wall of the rotating shaft 78 is interference-connected to the three toothed wheels 74. One end of the rotating shaft 78 is meshed with a positioning plate 77. The end is fixedly connected to the output shaft of the twisting motor 79 installed on the side wall of one of the vertical plates 73. When the twisting motor 79 is started, it drives the rotating shaft 78 on the end face of the output shaft to rotate, thereby driving the three toothed wheels 74 to rotate on the vertical plate 73. Then, the toothed belt 75 is used to drive the two twisting disks 76 and the positioning disk 77 to rotate slowly, so that the multiple groups of optical fiber core groups 1 are spirally wound in the S direction on the reinforcing tube 2. At the same time, the positioning frame 771 built into the positioning disk 77 can cooperate with the positioning disk 77 to make the optical fiber core group 1 with a certain degree of plastic deformation tightly fit the outer wall of the reinforcing tube 2.

[0100] When a certain twisting pitch is reached, the twisting motor 79 is reversed, causing the two twisting discs 76 and the positioning disc 77 to slowly rotate in opposite directions, so that the multiple optical fiber core groups 1 are spirally wound on the reinforcing tube 2 in the Z direction. At the same time, the positioning frame 771 built into the positioning disc 77 can tightly fit the optical fiber core group 1 with a certain plastic deformation to the outer wall of the reinforcing tube 2, thereby completing the twisting operation of the multiple optical fibers.

[0101] The two twisting disks 76 and one positioning disk 77 are respectively rotatably connected to the three vertical plates 73 near the top. The two twisting disks 76 are evenly provided with multiple limiting holes 761 along the circumferential direction. The inner wall of the positioning disk 77 is provided with a positioning frame 771, and the inner wall of the positioning frame 771 is provided with an arc groove equal to the optical fiber core group 1. The multiple limiting holes 761 can be used to distribute the multiple groups of optical fiber core groups 1 equidistantly around the circumference, and can ensure mutual stability during twisting to avoid extrusion damage. At the same time, the arc groove provided on the inner wall of the positioning frame 771 can compress the multiple groups of optical fiber core groups 1 twisted on the reinforcing tube 2 accordingly, so that they plastically fit the outer wall of the reinforcing tube 2.

[0102] like Figure 2-Figure 4 As shown, the injection molding machine 8 is bolted to the upper surface of the positioning base plate 10 to injection-mold the protective sleeve 3 on the outer wall of the twisted lighting optical fiber, and the internal nozzle of the injection molding machine 8 is used to spray the hot-melt fluid onto the surface of the optical fiber core group 1 to form the protective sleeve 3. This is a conventional technical means in this field and will not be repeated here.

[0103] like Figure 4 、 Figure 14 and Figure 15 As shown, a traction mechanism 9 is bolted to the upper surface of the positioning base plate 10 near the other end to pull and reel in the processed illumination optical fiber. The traction mechanism 9 includes a cooling cavity 91 bolted to the positioning base plate 10 via a support frame 911 and a cavity cover plate 92 bolted thereto. The cooling cavity 91 can store the cooling medium inside, while the cavity cover plate 92 can seal the interior thereof and fix the auxiliary wheel 925.

[0104] The cooling cavity 91 has traction holes 912 at the centers of both ends. The inner wall of the cooling cavity 91 is evenly connected to a plurality of traction rollers 914 near one end, and the end faces of the traction rollers 914 extend out of the outer wall of the cooling cavity 91. The middle positions of the plurality of traction rollers 914 are sleeved with traction wheels 915, and the end faces of the plurality of traction rollers 914 are sleeved with driven wheels 916. The bottom of the cooling cavity 91 is bolted with a traction motor 918, and the output end of the traction motor 918 is sleeved with a driving wheel 919. The wheel 919 and the multiple driven wheels 916 are sequentially sleeved with a synchronous belt 917 to achieve synchronous transmission. The traction motor 918 is started to drive the driving wheel 919 on the output shaft to rotate. The multiple synchronous belts 917 are used to rotate the multiple driven wheels 916 connected to the transmission, thereby driving the traction wheel 915 on the internal traction roller 914 to rotate. The auxiliary wheel 925 pressed on the multi-core lighting optical fiber by the compression spring 924 is used to pull the multi-core lighting optical fiber with the protective cover 3 injected into it.

[0105] The top of the cavity cover 92 is located just above the multiple traction rollers 914 and is penetrated by two screw rods 922, which are fixed by external nuts. The bottoms of the two screw rods 922 are fixedly connected to a U-shaped frame 923. The inner wall of the U-shaped frame 923 is evenly rotated and connected to multiple auxiliary wheels 925. The auxiliary wheels 925 correspond to the multiple traction wheels 915 one by one. The outer walls of the two screw rods 922 are respectively provided with compression springs 924, and the two ends of the compression springs 924 are respectively pressed against the Tightly attached to the cavity cover 92 and the U-shaped frame 923, the two screws 922 penetrating the cavity cover 92 enable the auxiliary wheel 925 to be squeezed by the multi-core illumination optical fiber entering from the bottom, driving the U-shaped frame 923 to slide on the cavity cover 92 through the screws 922, and squeezing the compression spring 924. The return elasticity of the stepping spring 924 allows the auxiliary wheel 925 to be equipped with a traction wheel 915 to compress the multi-core illumination optical fiber, facilitating traction and pulling.

[0106] A drainage pipe 913 is fixedly connected to the rear wall of the cooling cavity 91 at a horizontal position near the bottom of the traction perforation 912, and a water inlet pipe 921 is fixedly connected to the top of the cavity cover 92 near one end, so that the traction perforation 912 can be used to guide the twisted injection-molded multi-core optical fiber, so that it can be quickly cooled by the internal cooling medium when passing through the cooling cavity 91, thereby fixing the twisted multi-core optical fiber, and the coordinated use of the water inlet pipe 921 and the drainage pipe 913 can ensure the circulation of the internal cooling medium.

[0107] Among them, several optical fiber core groups 1 pass through the arrangement frame 5, the twisting mechanism 7, the injection molding machine 8 and the pulling mechanism 9 in sequence;

[0108] The reinforcing tube 2 passes through the pay-off mechanism 4, the arrangement frame 5, the twisting mechanism 7, the injection molding machine 8 and the traction mechanism 9 in sequence, and its two ends are respectively connected to the pay-off machine and the wind-up machine.

[0109] like Figure 2-Figure 15 As shown, a method for using a multi-core lighting optical fiber twisting device includes the following steps:

[0110] S1. First, multiple optical fiber core groups 1 and reinforcement tubes 2 are simultaneously led out from the pay-off mechanism 4 toward the traction mechanism 9, passing through the arrangement frame 5, the stranding mechanism 7, the injection molding machine 8 and the traction mechanism 9 in sequence, and connected to the external winder;

[0111] S2. Then, a cooling medium is injected into the cooling cavity 91 through the water inlet pipe 921 and a connected circulation is achieved through the drain pipe 913 to achieve rapid cooling of the protective sleeve 3 after injection molding.

[0112] S3. Then, when the external control system receives the start command, it sends an initialization signal to each station drive mechanism at the same time, specifically including:

[0113] S31. Send a signal to the traction motor 918 in the traction mechanism 9 to drive the driving wheel 919 on the output shaft to rotate, and use multiple synchronous belts 917 to rotate the multiple driven wheels 916 connected to the traction mechanism 9, thereby driving the traction wheel 915 on the internal traction roller 914 to rotate. Then, the auxiliary wheel 925 pressed against the multi-core lighting optical fiber by the compression spring 924 is pulled to pull the multi-core lighting optical fiber with the protective cover 3 injected thereon;

[0114] S32: Send a signal to the injection molding machine 8, and its internal heating structure heats the raw material of the protective sheath 3, so that it forms a fluid that covers the surface of the optical fiber core group 1. After rapid cooling inside the cooling cavity 91, the protective sheath 3 fixes the twisted multi-core optical fibers inside.

[0115] S33. Send a signal to the twisting motor 79 in the twisting mechanism 7, causing it to drive the rotating shaft 78 on the end face of the output shaft to rotate, thereby driving the three toothed wheels 74 to rotate on the vertical plate 73. Then, the toothed belt 75 is used to drive the two twisting disks 76 and the positioning disk 77 to slowly rotate, so that the multiple groups of optical fiber cores 1 are wound in an S-direction spiral on the reinforcing tube 2. At the same time, the positioning frame 771 built into the positioning disk 77 can cooperate with the plastically deformed optical fiber core group 1 to tightly fit the outer wall of the reinforcing tube 2.

[0116] When a certain twisting pitch is reached, the twisting motor 79 is reversed, causing the two twisting discs 76 and the positioning disc 77 to slowly rotate in opposite directions, so that the multiple optical fiber core groups 1 are spirally wound on the reinforcing tube 2 in the Z direction. At the same time, the positioning frame 771 built into the positioning disc 77 can tightly fit the optical fiber core group 1 with a certain plastic deformation to the outer wall of the reinforcing tube 2, thereby completing the twisting operation of the multiple optical fibers.

[0117] At the same time, the tensioning wheel 65 provided in the tensioning assembly 6 is squeezed by the optical fiber core group 1 pulled by the forward and reverse twisting, so that the tensioning wheel 65 drives the slide plate 64 to slide on the slide rod 63 and squeezes the tensioning spring 66 at the top. The restoring elasticity of the tensioning spring 66 drives the tensioning wheel 65 to dynamically adjust the tension of the optical fiber core group 1, ensuring the stable movement of the optical fiber core group 1.

[0118] S34. Send a signal to the pay-off motor 48 in the pay-off mechanism 4, causing its output shaft to drive the driving gear 49 on the end face to rotate, which in turn drives the meshing drive gear ring 47 to rotate, thereby driving the rotation of multiple meshing driven gears 45, and further causing the core reel 44 to rotate on the clamping frame 43, so that a stable pay-off operation can be achieved during the stranding process.

[0119] S35. Send signals to the unwinding machine and the rewinding machine at both ends of the reinforcing tube 2 to realize the unwinding of the reinforcing tube 2 and the rewinding operation after the multi-core lighting optical fiber is formed.

[0120] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention's description and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A multi-core lighting optical fiber twisting device, characterized in that: It includes a positioning base plate (10) for coaxial installation and fixation of multiple mechanisms; A pay-off mechanism (4) is detachably mounted on the upper surface of the positioning base plate (10) near one end to stably and continuously pay out a plurality of optical fiber core groups (1); An arrangement frame (5) is installed in the middle of the pay-off mechanism (4) via a plurality of connecting rods to allow a plurality of optical fiber core groups (1) to be neatly arranged and distributed; A plurality of tensioning assemblies (6) are circumferentially bolted to one end of the arrangement frame (5) to adjust the tension of the optical fiber core group (1) during the twisting process; Bolts are connected to a twisting mechanism (7) near the middle of the upper surface of the positioning base plate (10) to twist a plurality of optical fiber core groups (1) reciprocatingly on the outer wall of the reinforcement tube (2); An injection molding machine (8) is bolted to the upper surface of the positioning base plate (10) to injection-mold a protective sleeve (3) on the outer wall of the twisted lighting optical fiber; Bolts are connected to a traction mechanism (9) near the other end of the upper surface of the positioning base plate (10) to pull the processed lighting optical fiber; Wherein, a plurality of the optical fiber core groups (1) sequentially pass through the arrangement frame (5), the twisting mechanism (7), the injection molding machine (8) and the pulling mechanism (9); The reinforcing tube (2) passes through the unwinding mechanism (4), the arrangement frame (5), the twisting mechanism (7), the injection molding machine (8) and the traction mechanism (9) in sequence, and its two ends are respectively connected to the unwinding machine and the winding machine; The arrangement frame (5) comprises a plurality of guide tubes (53) arranged equidistantly in the circumferential direction, and a lead ring plate (51) and an outlet ring plate (52) respectively mounted at both ends of the guide tubes (53), wherein the lead ring plate (51) is fixedly connected to the middle position of the mounting frame (42) via a plurality of connecting rods; The plurality of guide tubes (53) are arranged to converge from the lead-in ring plate (51) toward the outlet ring plate (52), the lead-in ring plate (51) and the outlet ring plate (52) are respectively provided with a plurality of lead-in holes (511) and outlet holes (521) at equal intervals along the circumferential direction, and both ends of the plurality of guide tubes (53) are respectively connected to the lead-in holes (511) and the outlet holes (521); The inner walls of the plurality of lead holes (511) are all embedded with embedded sleeves (512), and the outer walls of the plurality of guide tubes (53) are all provided with a plurality of weight-reducing holes (531), and the whole is hollowed out; The tensioning assembly (6) includes a frame (61) bolted to one side of the lead ring plate (51) near the edge and facing the pay-off mechanism (4), and the frame (61) is located on both sides of the lead hole (511); Movable grooves (62) are symmetrically provided on both sides of the frame (61) near the end surfaces. Slide rods (63) are installed in the two movable grooves (62) from top to bottom and fixed with nuts. The outer walls of the two slide rods (63) are slidably connected with a slide plate (64). The bottom bolts of the slide plate (64) are connected with a tensioning wheel (65). Two tensioning springs (66) are tightly provided on the top of the slide plate (64), and the two tensioning springs (66) are respectively sleeved on the outside of the two slide rods (63). At the same time, the other ends of the two tensioning springs (66) are tightly pressed against the inner top of the movable groove (62).

2. The multi-core lighting optical fiber twisting device according to claim 1, characterized in that: The pay-off mechanism (4) includes a mounting frame (42) bolted to the top of the positioning base plate (10) via a fixing seat (41), a plurality of clamping frames (43) are fixedly connected to one side of the mounting frame (42) in a uniform circumferential direction, the end faces of the plurality of clamping frames (43) are rotatably connected to a fiber core reel (44), one end of the rotating shaft provided in the plurality of fiber core reels (44) is fixedly connected to a driven gear (45), and the other end is engaged with a limiting ring (46); The outer walls of the plurality of driven gears (45) are meshedly connected with a driving gear ring (47), and the driving gear ring (47) is meshedly connected to a driving gear (49) sleeved on an output shaft of a pay-off motor (48), and the pay-off motor (48) is bolted to the other side of the mounting frame (42) near the bottom.

3. The multi-core lighting optical fiber twisting device according to claim 2, characterized in that: The driving gear ring (47) is rotatably connected to one side of the mounting frame (42) near the edge, and the tooth blocks arranged on the surface thereof are arranged in an L-shape as a whole. The rotating gear ring (47) is respectively meshed and connected to the driving gear (49) and the driven gear (45) through the tooth blocks.

4. The multi-core lighting optical fiber twisting device according to claim 1, characterized in that: The twisting mechanism (7) comprises a connecting plate (72) bolted to the positioning base plate (10) via a plurality of corner blocks (71), and three vertical plates (73) are fixedly connected to the top of the connecting plate (72) at equal intervals. The side walls of the three vertical plates (73) are all rotatably connected to toothed wheels (74) near the bottom, one of the toothed wheels (74) is arranged relative to the other two toothed wheels (74), and the outer walls of the three toothed wheels (74) are all meshedly connected to toothed belts (75), the inner wall of one of the toothed belts (75) away from the toothed wheel (74) is meshedly connected to a positioning disk (77), and the inner walls of the other two toothed belts (75) away from the toothed wheel (74) are meshedly connected to a twisting disk (76), and a rotating shaft (78) is provided through the three vertical plates (73) near the bottom, and the outer wall of the rotating shaft (78) is interference-connected to the three toothed wheels (74), and one end of the rotating shaft (78) is fixedly connected to the output shaft of the twisting motor (79) installed on the side wall of one of the vertical plates (73); The two twisting disks (76) and the positioning disk (77) are respectively rotatably connected to the three vertical plates (73) near the top. The two twisting disks (76) are evenly provided with a plurality of limiting holes (761) along the circumferential direction. The inner wall of the positioning disk (77) is provided with a positioning frame (771), and the inner wall of the positioning frame (771) is provided with an arc groove that is equal to the optical fiber core group (1).

5. The multi-core lighting optical fiber twisting device according to claim 1, characterized in that: The traction mechanism (9) comprises a cooling cavity (91) bolted to the positioning base plate (10) via a support frame (911) and a cavity cover plate (92) bolted to the cavity after covering the cooling cavity (91). Traction holes (912) are provided at the centers of both ends of the cooling cavity (91), and the inner wall of the cooling cavity (91) is evenly connected to a plurality of traction rollers (914) near one end, and the end faces of the traction rollers (914) extend out of the outer wall of the cooling cavity (91), and the middle positions of the plurality of traction rollers (914) are sleeved with traction wheels (915), and the end faces of the plurality of traction rollers (914) are sleeved with driven wheels (916), and the bottom bolts of the cooling cavity (91) are connected to a traction motor (918), and the output end of the traction motor (918) is sleeved with a driving wheel (919), and the driving wheel (919) and the plurality of driven wheels (916) are sequentially sleeved with synchronous belts (917) to achieve synchronous transmission; Two screw rods (922) are provided through the top of the cavity cover plate (92) and located directly above the multiple traction rollers (914), and are fixed in position by external nuts. The bottoms of the two screw rods (922) are fixedly connected to a U-shaped frame (923). The inner wall of the U-shaped frame (923) is evenly connected to multiple auxiliary wheels (925), and the auxiliary wheels (925) correspond to the multiple traction wheels (915) one by one. The outer walls of the two screw rods (922) are both sleeved with compression springs (924), and the two ends of the two compression springs (924) are respectively pressed against the cavity cover plate (92) and the U-shaped frame (923).

6. The multi-core lighting optical fiber twisting device according to claim 5, characterized in that: A drainage pipe (913) is fixedly connected to the rear wall of the cooling cavity (91) near the bottom horizontal plane of the traction perforation (912), and a water inlet pipe (921) is fixedly connected to the top of the cavity cover plate (92) near one end.

7. A method for using a multi-core lighting optical fiber twisting device according to any one of claims 1 to 6, characterized in that: The following steps are involved: S1. First, multiple optical fiber core groups (1) and reinforcement tubes (2) are simultaneously led out from the pay-off mechanism (4) toward the traction mechanism (9), so that they pass through the arrangement frame (5), the twisting mechanism (7), the injection molding machine (8) and the traction mechanism (9) in sequence, and are connected to the external winding machine; S2, then injecting cooling medium into the cooling cavity (91) through the water inlet pipe (921) and realizing a communication cycle through the drainage pipe (913), thereby realizing rapid cooling of the protective sleeve (3) after injection molding; S3. Then, when the external control system receives the start command, it sends an initialization signal to each station drive mechanism at the same time, specifically including: S31, sending a signal to the traction motor (918) in the traction mechanism (9) to drive the driving wheel (919) on the output shaft to rotate, using multiple synchronous belts (917) to rotate multiple driven wheels (916) connected to the transmission, thereby driving the traction wheel (915) on the internal traction roller (914) to rotate, and then using the compression spring (924) to press the auxiliary wheel (925) on the multi-core lighting optical fiber to achieve traction and pulling of the multi-core lighting optical fiber with the injection-molded protective cover (3); S32, sending a signal to the injection molding machine (8), causing the internal heating structure of the injection molding machine to heat the raw material of the protective sleeve (3), so that the raw material forms a fluid that covers the surface of the optical fiber core group (1), and after rapid cooling inside the cooling cavity (91), the protective sleeve (3) is fixed to the twisted multi-core optical fiber inside; S33, sending a signal to the twisting motor (79) in the twisting mechanism (7) to drive the rotating shaft (78) on the end face of the output shaft to rotate, thereby driving the three toothed wheels (74) to rotate on the vertical plate (73), and then using the transmission of the toothed belt (75) to make the two twisting disks (76) and the positioning disk (77) rotate slowly, so that the multiple groups of optical fiber core groups (1) are wound in an S-direction spiral on the reinforcing tube (2), and at the same time, the positioning frame (771) built into the positioning disk (77) can make the optical fiber core group (1) with a certain plastic deformation tightly fit on the outer wall of the reinforcing tube (2); When a certain twisting pitch is reached, the twisting motor (79) is reversed, causing the two twisting discs (76) and the positioning disc (77) to slowly rotate in opposite directions, so that the multiple optical fiber core groups (1) are spirally wound on the reinforcing tube (2) in the Z direction. At the same time, the positioning frame (771) built into the positioning disc (77) can tightly fit the optical fiber core group (1) with a certain plastic deformation to the outer wall of the reinforcing tube (2), thereby completing the twisting operation of the multiple optical fibers; At the same time, the tensioning wheel (65) provided in the tensioning assembly (6) is squeezed by the optical fiber core group (1) pulled by the forward and reverse twisting, so that the tensioning wheel (65) drives the slide plate (64) to slide on the slide bar (63) and squeezes the tensioning spring (66) at the top. The restoring elasticity of the tensioning spring (66) drives the tensioning wheel (65) to dynamically adjust the tension of the optical fiber core group (1), thereby ensuring the stable movement of the optical fiber core group (1); S34, sending a signal to the pay-off motor (48) in the pay-off mechanism (4), so that its output shaft drives the driving gear (49) on the end face to rotate, so that it drives the meshing drive gear ring (47) to rotate, thereby driving the rotation of multiple meshing driven gears (45), and then causing the fiber core reel (44) to rotate on the clamping frame (43), so that it can achieve a stable pay-off operation during the stranding process; S35, sending signals to the unwinding machine and the rewinding machine at both ends of the reinforcing tube (2), so as to realize the unwinding of the reinforcing tube (2) and the rewinding operation after the multi-core lighting optical fiber is formed.

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