Cable core twisting equipment for optical cable preparation and preparation process

Abstract

The invention discloses cable core twisting equipment for optical cable preparation and a preparation process, and belongs to the field of optical cable preparation. The cable core twisting equipment for optical cable preparation comprises a circular plate, the end face of the circular plate is fixedly connected with two side plates, the two side plates are symmetrically arranged with the circular plate as the center, a circular hole is formed in the middle of the circular plate, a through hole is formed in the outer side of the circular plate, and the circular hole and the through hole completely penetrate through the circular plate and the side plates in the axial direction. The number of the through holes is multiple, the multiple through holes are evenly distributed with the round hole as the center, the inner walls of the through holes located in the round plate are rotationally connected with balls, and the diameters of the through holes are gradually decreased from the edge of the round plate to the side close to the round hole, so that the problem that the loose tube shakes and deviates in the hole in the radial direction is solved. The clamping distance can be automatically adjusted according to the outer diameter of the loose tube, the clamping device is matched with the gradually-changed through hole, gapless adaptation of loose tubes with different thicknesses is achieved, and the universality of equipment to optical cables with different specifications is improved.

Description

Technical Field

[0001] This invention relates to a cable core stranding device and manufacturing process for optical cable production, and pertains to the field of optical cable production. Background Technology

[0002] As the core carrier of information transmission, the precision and stability of the cable core stranding process directly determine the transmission performance, structural strength and service life of the optical cable. Due to its compact structure and strong anti-interference ability, the stranded cable core has become the mainstream structural form in optical cable manufacturing. Its manufacturing process needs to achieve core requirements such as precise arrangement of loose tubes and central reinforcing members, non-destructive stranding and reliable water blocking.

[0003] In the prior art, such as the stranded cable production device with patent number CN117163757B, the rotation of the turntable is achieved by the meshing of the synchronous belt with the driving bevel gear and the driven bevel gear, so that the cable after stranding is evenly wound on the take-up roller, which can increase the cable take-up speed and improve work efficiency. However, the through holes of traditional cable laying assemblies are mostly of equal diameter, which cannot adapt to the radial dimension changes of the loose tube from cable laying to coiling. During the transportation of the loose tube, radial swaying and offset are prone to occur. Furthermore, the outer wall of the loose tube is easily scratched and frayed during transportation, which leads to micro-bending loss of the internal optical fiber and affects the transmission performance of the optical cable. At the same time, the coiling process of the loose tube and the central reinforcement is not guided by a stepped structure, which can easily lead to uneven distribution and excessive gaps. After stranding, the roundness of the cable core is poor, and the loose tube is prone to displacement and loosening. Summary of the Invention

[0004] To address the aforementioned problems, this invention discloses a cable core stranding device and manufacturing process for optical cable preparation. The device includes a base, with a winding drum fixedly connected to the top end of the base. A drive unit is externally connected to the winding drum. When the drive unit is activated, the winding drum rotates. The winding speed of the winding drum is linked in real time with the stranding speed of the stranding die and the unwinding speed of the unwinding assembly, ensuring that the cable core maintains constant tension during the winding process, without stretching or loosening. The wire feeding assembly is located on the top of the base away from the take-up drum, and a support plate is fixedly installed on the outside of the wire feeding assembly. The support plate is fixedly connected to the base, and a protective cover is fixedly connected to the top of the base near the wire feeding assembly. It also includes: a transition component, a twisting die, and a limiting component arranged sequentially from the wire feeding component to the winding drum. The transition component and the twisting die are located inside the protective cover. A slide rail is fixedly connected to the top of the base near the transition component. A vertical plate is slidably connected to the top of the slide rail. The vertical plate is fixedly connected to the transition component. The wire-laying assembly includes a circular plate, with two side plates fixedly connected to its end face. The two side plates are symmetrically arranged around the circular plate. A circular hole is formed in the center of the circular plate, and through holes are formed on its outer side. Both the circular hole and the through holes completely penetrate the circular plate and the side plates along the axial direction. Multiple through holes are evenly distributed around the circular hole. Ball bearings are rotatably connected to the inner walls of the through holes on the circular plate. These ball bearings convert sliding friction into rolling friction, eliminating hard friction between the loose sleeve and the through holes and preventing scratches and burrs on the outer wall of the loose sleeve. It is an eccentric ring, and the diameter of the through hole gradually decreases from the edge of the circular plate to the side closer to the hole. The gradual change in the diameter of the through hole ensures that the loose tube always rolls in close contact with the ball bearing surface of the inner wall of the through hole, avoiding radial shaking or displacement of the loose tube in the hole. This adapts to the radial dimensional changes of the loose tube from unloading to retraction. At the same time, the sliding block forms an elastic clamp under the action of the compression spring, which can automatically adjust the clamping distance according to the outer diameter of the loose tube. In conjunction with the gradual through hole, it can achieve gapless adaptation to loose tubes of different thicknesses, improving the equipment's versatility for different specifications of optical cables.

[0005] Furthermore, a ring is fixedly connected to the outer side of the side plate located near the protective cover of the circular plate, and a fixing block is fixedly connected to the side of the side plate near the ring. There are multiple fixing blocks, with two fixing blocks forming a group. The group of fixing blocks is symmetrically arranged around the through hole. A side groove is opened inside the fixing block, and a sliding block is slidably connected to the inner wall of the side groove. The sliding block is V-shaped, and a compression spring is fixedly connected to the outer side of the sliding block. The end of the compression spring away from the sliding block is fixedly connected to the inner wall of the ring. An intermediate roller is fixedly connected to the inner wall of the circular hole of the circular plate. There are multiple intermediate rollers, and the multiple intermediate rollers are evenly distributed inside the circular hole. Rollers are rotatably connected to the side of the sliding block. The rollers are symmetrically arranged on both sides of the sliding block. A conical block is fixedly connected to the outer side of the side plate near the circular hole. There are multiple conical blocks.

[0006] Furthermore, the transition assembly includes a cylinder, which is fixedly connected to a side plate. A sliding cylinder is slidably connected to the end of the cylinder furthest from the side plate. An intermediate plate and a positioning plate are fixedly connected to both ends of the sliding cylinder, respectively. The diameter of the intermediate plate is larger than that of the positioning plate, and the intermediate plate is located at the end of the sliding cylinder closest to the cylinder. A corrugated pipe is fixedly connected to the end of the cylinder furthest from the side plate, with both ends of the corrugated pipe fixedly connected to the cylinder and sliding cylinder of the transition assembly, respectively. When the vertical plate is pushed to slide along the slide rail to adjust the axial distance between the wire feeding assembly and the transition assembly, the sliding cylinder moves synchronously with the vertical plate. The corrugated pipe can freely expand and contract according to the distance change, without motion interference from rigid structures. This adapts to all distance adjustment ranges required for different specifications of loose sleeves, ensuring smooth and flexible distance adjustment without affecting the overall equipment. In the adjustment operation, the bellows is located inside the slide cylinder, and the end of the bellows away from the cylinder is fixedly connected to one end of the slide cylinder. A square hole is opened on the outer side of the cylinder, and a slider is slidably connected to the inner wall of the square hole. The slider is fixedly connected to the slide cylinder. A sliding ring is slidably connected to the inner wall of the cylinder and is fixedly connected to the slider. There are two square holes, which are symmetrically arranged on the cylinder. A brush is fixedly connected to the inner wall of the sliding ring. When the cable passes through the inside of the cylinder, the corrugated brush on the inner wall of the sliding ring contacts the outer wall of the cable to clean the surface dust and impurities. At the same time, the bellows expands and contracts with the slide cylinder to achieve sealing protection of the expansion and contraction parts of the transition component, preventing dust from entering the guide channel, and ensuring that the cable is always transported straight without bending or sudden tension changes. The brush is corrugated.

[0007] Furthermore, the stranding die includes a fixed base, which is fixedly connected to the base. A connecting cylinder is fixedly connected to the top of the fixed base, and a motor is fixedly connected to the outside of the fixed base. After the motor starts, its output end drives a spur gear to rotate. The spur gear meshes with a toothed ring on the outside of the cylinder, driving the cylinder to rotate around the cable axis. Multiple V-shaped plates inside the cylinder guide the loose tube, achieving layered stranding of the loose tube and the central reinforcing member. A spur gear is fixedly connected to the output end of the motor, and the cylinder is rotatably connected inside the connecting cylinder. A toothed ring is fixedly connected to the middle of the outside of the cylinder, and the outer side of the toothed ring meshes with the outer gear of the spur gear. A conical cylinder is fixedly connected to one end of the connecting cylinder near the transition component. The conical cylinder connects with the pay-off component and the closing structure of the transition component, achieving a stepped diameter reduction through multiple closings. Then, the layered stranding is completed by rotating the cylinder, making the loose tube tightly and evenly arranged around the central reinforcing member. After stranding, the cable core is free of looseness. The design features a non-collapsible, non-displacement, and non-eccentric structure, improving roundness and structural stability. A fixed plate is fixedly connected to the end of the conical cylinder. Holes are formed in the fixed plate, positioning plate, and intermediate plate, through which cables pass. Multiple V-shaped plates are fixedly connected to the inner wall of the cylinder near the conical end. These plates are evenly distributed within the cylinder, providing precise twisting guidance for the loose tubes and limiting radial displacement during cylinder rotation. This ensures consistent twisting trajectories for each loose tube, achieving uniform circumferential twisting and preventing stacking and uneven spacing of the loose tubes. A cylinder is slidably connected to the inner wall of the cylinder. An arc plate is fixedly connected to the end of the cylinder furthest from the cylinder. A return spring is fitted on the outer side of the cylinder, with both ends fixedly connected to the inside of the cylinder and the arc plate, respectively. Multiple arc plates are evenly distributed within the cylinder.

[0008] Furthermore, the limiting component includes a housing and a fixed post fixedly installed at the bottom of the housing. An intermediate cylinder is located in the middle of the housing's interior, and an elastic plate is fixedly connected to the outside of the intermediate cylinder. The flexible structure of the intermediate cylinder, supported by the elastic plate, can dynamically correct slight deviations during cable core transport in real time, ensuring straight transport of the cable core throughout. Simultaneously, its elastic deformation characteristics can adapt to the alignment requirements of cable cores with different outer diameters, eliminating the need for replacement parts and offering strong versatility. When the equipment is running, mechanical vibrations may occur, or slight shaking or impacts may occur during high-speed cable core transport. The elastic plate will undergo flexible elastic deformation with the vibration, converting rigid vibration impacts into elastic deformation buffering force, reducing the transmission of vibration to the cable core. This effectively prevents micro-bending and compression of the loose tube and internal optical fibers due to vibration, fundamentally preventing damage to optical fiber transmission performance and ensuring the stability of optical cable signal transmission. Multiple elastic plates are used, and multiple elastic plates... The elastic plates are evenly distributed on the outside of the intermediate cylinder. The end of the elastic plate away from the intermediate cylinder is fixedly connected to the shell. An inner cavity is opened in the middle of the intermediate cylinder. A feed hole is opened at the top of the shell and a discharge hole is opened at the bottom of the shell. The feed hole, discharge hole and inner cavity form a closed filling space. When the cable core is inserted and removed, it fits tightly against the hole wall. With the sealing structure of the intermediate cylinder, it effectively prevents water-blocking grease from splashing and overflowing during the filling process. It ensures that the grease is evenly filled into every gap of the cable core, improves the overall water-blocking performance of the optical cable, and avoids water seepage and damage to the optical fiber. It also reduces the waste of grease raw materials and reduces the cost of production materials. The feed hole and discharge hole penetrate the shell and extend into the interior of the intermediate cylinder and communicate with the inner cavity. A partition is fixedly connected to the inner wall of the inner cavity. The intermediate cylinder is inclined on both sides of the inner cavity. There are multiple partitions, which are arranged inside the inner cavity. An annular groove is opened on the inner side of the end of the intermediate cylinder.

[0009] A cable core stranding device and manufacturing process for optical cable production includes the following steps: S1. Line feeding guide: The central reinforcing member passes through the round hole in the middle of the line feeding assembly, and the loose tube passes through the hole. It is elastically clamped by the sliding block and initially gathered by the roller and conical block, so that the loose tube is evenly distributed along the circumference of the reinforcing member. S2. Gathering and cleaning: The cable is threaded into the transition component to complete the tapered gathering. The wave brush cleans the outer wall of the loose tube. The cylinder and slide are sealed and protected to ensure that the cable is conveyed straight to the stranding die. S3. Cable stranding: After the cable is gathered twice by the conical cylinder on the stranding die, the motor drives the cylinder to rotate to achieve the stranding of the loose tube and the reinforcing member. The inner arc plate of the cylinder adaptively shapes the cable core. S4. Water-blocking filling: The cable core is inserted into the limiting component, and at the same time, water-blocking grease is filled into the inner cavity through the feed hole to the gap between the cable cores. S5. Cable winding: The shaped cable core is pulled to the winding drum. The winding speed is linked with the stranding and unwinding speed to achieve constant tension and regular winding.

[0010] Compared with the prior art, the beneficial effects of the present invention are as follows: The cable core stranding equipment and manufacturing process for optical cable preparation, wherein the diameter of the through hole gradually decreases from the edge of the circular plate to the side near the circular hole, so that the loose tube always rolls in contact with the ball surface of the inner wall of the through hole, avoiding radial shaking and displacement of the loose tube in the hole, thereby adapting to the radial dimension change of the loose tube from unwinding to rewinding.

[0011] (II) The cable core stranding equipment and manufacturing process for optical cable preparation, wherein the two ends of the corrugated tube are fixedly connected to the cylinder and the slide of the transition component, respectively, so that when the axial distance between the cable laying component and the transition component is adjusted, the slide moves synchronously with the vertical plate, and the corrugated tube can freely expand and contract according to the distance change, without the movement interference of the rigid structure, adapting to all distance adjustment ranges required by different specifications of loose tubes, ensuring the smoothness and flexibility of distance adjustment, and not affecting the overall adjustment operation of the equipment.

[0012] (III) The cable core stranding equipment and manufacturing process for optical cable preparation, the conical cylinder is connected with the cable laying component and the transition component to realize the stepped diameter reduction of multiple times. Then, the layer stranding is completed by rotating the cylinder, so that the loose tube is tightly and evenly arranged around the central reinforcing member. After stranding, the cable core is not loose, not displaced, and not eccentric, and the roundness and structural stability are improved.

[0013] (iv) The cable core stranding equipment and manufacturing process for optical cable preparation, wherein the V-shaped plate is evenly distributed along the inner wall of the cylinder, forming a precise stranding guide for the loose tube, restricting the radial displacement of the loose tube during the rotation of the cylinder, ensuring that the stranding trajectory of each loose tube is consistent, realizing the circumferential uniform stranding of the loose tube, and avoiding the problems of loose tube stacking and uneven spacing. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a partial cross-sectional structural schematic diagram of the present invention; Figure 3 This is a schematic diagram of the wire feeding assembly of the present invention; Figure 4 For the present invention Figure 3 A structural schematic diagram of the enlarged view at point A in the middle; Figure 5 This is a schematic diagram of the structure of the transition component of the present invention; Figure 6 This is a cross-sectional structural schematic diagram of the transition component of the present invention; Figure 7 This is a cross-sectional structural schematic diagram of the stranding mold of the present invention; Figure 8 This is a partial structural schematic diagram of the stranding die of the present invention; Figure 9 This is a schematic diagram of the structure of the limiting component of the present invention; Figure 10 This is a schematic diagram of the structure of the intermediate cylinder of the present invention; Figure 11 This is a schematic diagram of the preparation process of the present invention.

[0015] In the diagram: 1. Base; 2. Protective cover; 3. Wire feeding assembly; 31. Circular plate; 32. Side plate; 33. Ring; 34. Circular hole; 35. Through hole; 36. Ball bearing; 37. Fixing block; 38. Sliding block; 39. Compression spring; 310. Intermediate roller; 311. Conical block; 312. Roller; 313. Side groove; 4. Support plate; 5. Transition assembly; 51. Cylinder; 52. Sliding cylinder; 53. Intermediate plate; 54. Positioning plate; 55. Square hole; 56. Bellows; 57. Slider; 58. Sliding element 59. Ring; 6. Brush; 7. Wrapping mold; 8. Fixed base; 9. Connecting cylinder; 10. Spur gear; 11. Conical cylinder; 12. Gear ring; 13. Motor; 14. Cylinder body; 15. V-shaped plate; 16. Fixed plate; 17. Cylindrical cylinder; 18. Arc plate; 19. Return spring; 20. Limiting assembly; 10. Ring groove; 11. Housing; 22. Feed hole; 33. Intermediate cylinder; 44. Elastic plate; 55. Discharge hole; 66. Partition plate; 77. Inner cavity; 8. Winding drum; 9. Vertical plate; 10. Slide rail. Detailed Implementation

[0016] Example 1, as Figures 1 to 6 As shown, this embodiment discloses a cable core stranding device and manufacturing process for optical cable preparation, including a base 1, a winding drum 8 fixedly connected to the top end of the base 1, a drive unit externally connected to the winding drum 8, the drive unit being activated to make the winding drum 8 rotate, the winding speed of the winding drum 8 being linked in real time with the stranding speed of the stranding mold 6 and the unwinding speed of the unwinding assembly to ensure that the cable core has constant tension during the winding process, without stretching or loosening; The wire feeding assembly 3 is located on the top of the base 1 at the end away from the take-up drum 8, and a support plate 4 is fixedly installed on the outside of the wire feeding assembly 3. The support plate 4 is fixedly connected to the base 1, and a protective cover 2 is fixedly connected to the top of the base 1 near the wire feeding assembly 3. It also includes: a transition component 5, a twisting mold 6 and a limiting component 7 arranged sequentially from the wire feeding component 3 to the winding drum 8. The transition component 5 and the twisting mold 6 are located inside the protective cover 2. A slide rail 10 is fixedly connected to the top of the base 1 near the top of the transition component 5. A vertical plate 9 is slidably connected to the top of the slide rail 10. The vertical plate 9 is fixedly connected to the transition component 5. The wire feeding assembly 3 includes a circular plate 31, with two side plates 32 fixedly connected to its end face. The two side plates 32 are symmetrically arranged around the circular plate 31. A circular hole 34 is formed in the center of the circular plate 31, and a through hole 35 is formed on its outer side. The circular hole 34 and the through hole 35 completely penetrate the circular plate 31 and the side plate 32 along the axial direction. Multiple through holes 35 are evenly distributed around the circular hole 34. A ball bearing 36 is rotatably connected to the inner wall of the through hole 35 on the circular plate 31. The ball bearing 36 converts sliding friction into rolling friction, eliminating hard friction between the loose sleeve and the through hole 35, and preventing… The outer wall of the loose tube is scratched and frayed. The through hole 35 is an eccentric ring, and the diameter of the through hole 35 gradually decreases from the edge of the circular plate 31 to the side near the circular hole 34. The gradual change in the diameter of the through hole 35 ensures that the loose tube always rolls in close contact with the ball bearing 36 on the inner wall of the through hole 35, preventing radial shaking or displacement of the loose tube in the hole. This adapts to the radial size change of the loose tube from unloading to retraction. At the same time, the sliding block 38 forms an elastic clamp under the action of the compression spring 39, which can automatically adjust the clamping distance according to the outer diameter of the loose tube. In conjunction with the gradual through hole 35, it can achieve gapless adaptation to loose tubes of different thicknesses and improve the equipment's versatility for optical cables of different specifications.

[0017] A ring 33 is fixedly connected to the outer side of the side plate 32 located on the side of the circular plate 31 near the protective cover 2. A fixing block 37 is fixedly connected to the side of the side plate 32 near the ring 33. There are multiple fixing blocks 37, with two fixing blocks 37 forming a group. A group of fixing blocks 37 is symmetrically arranged with the through hole 35 as the center. A side groove 313 is opened inside the fixing block 37. A sliding block 38 is slidably connected to the inner wall of the side groove 313. The sliding block 38 is V-shaped. A compression spring 39 is fixedly connected to the outer side of the sliding block 38. One end of the compression spring 39 away from the sliding block 38 is fixedly connected to the inner wall of the ring 33. An intermediate roller 310 is fixedly connected to the inner wall of the circular hole 34 of the circular plate 31. There are multiple intermediate rollers 310, which are evenly distributed inside the circular hole 34. A roller 312 is rotatably connected to the side of the sliding block 38. The rollers 312 are symmetrically arranged on both sides of the sliding block 38. A conical block 311 is fixedly connected to the outer side of the side plate 32 near the circular hole 34. There are multiple conical blocks 311.

[0018] The transition component 5 includes a cylinder 51, which is fixedly connected to a side plate 32. A slide cylinder 52 is slidably connected to the end of the cylinder 51 furthest from the side plate 32. An intermediate plate 53 and a positioning plate 54 are fixedly connected to both ends of the slide cylinder 52, respectively. The diameter of the intermediate plate 53 is larger than that of the positioning plate 54. The intermediate plate 53 is located at the end of the slide cylinder 52 closest to the cylinder 51. A corrugated pipe 56 is fixedly connected to the end of the cylinder 51 furthest from the side plate 32. Both ends of the corrugated pipe 56 are fixedly connected to the cylinder 51 and the slide cylinder 52 of the transition component, respectively. When the vertical plate 9 is pushed to slide along the slide rail 10 to adjust the axial distance between the wire feeding component 3 and the transition component 5, the slide cylinder 52 moves synchronously with the vertical plate 9. The corrugated pipe 56 can freely expand and contract according to the distance change, without interference from the rigid structure. This adapts to all distance adjustment ranges required for different specifications of loose sleeves, ensuring smooth and flexible distance adjustment without affecting the overall adjustment operation of the equipment. The bellows 56 is located inside the slide cylinder 52, and the end of the bellows 56 away from the cylinder 51 is fixedly connected to one end of the slide cylinder 52. A square hole 55 is provided on the outer side of the cylinder 51. A slider 57 is slidably connected to the inner wall of the square hole 55. The slider 57 is fixedly connected to the slide cylinder 52. A sliding ring 58 is slidably connected to the inner wall of the cylinder 51. The sliding ring 58 is fixedly connected to the slider 57. There are two square holes 55, which are symmetrically arranged on the cylinder 51. A brush 59 is fixedly connected to the inner wall of the sliding ring 58. When the cable passes through the inside of the cylinder 51, the wave-shaped brush 59 on the inner wall of the sliding ring 58 contacts the outer wall of the cable to clean the surface dust and impurities. At the same time, the bellows 56 expands and contracts with the slide cylinder 52 to achieve sealing protection of the expansion and contraction parts of the transition component, prevent dust from entering the guide channel, and ensure that the cable is always transported straight without bending or sudden tension changes. The brush 59 is wave-shaped.

[0019] Example 2, based on Example 1, combined with... Figures 7 to 8Therefore, the stranding die 6 includes a fixed base 61, which is fixedly connected to the base 1. A connecting cylinder 62 is fixedly connected to the top of the fixed base 61, and a motor 66 is fixedly connected to the outside of the fixed base 61. After the motor 66 is started, its output end drives the spur gear 63 to rotate. The spur gear 63 meshes with the toothed ring 65 on the outside of the cylinder 67, driving the cylinder 67 to rotate around the cable axis. Multiple V-shaped plates 68 inside the cylinder 67 guide the loose tube, realizing the layered stranding of the loose tube and the central reinforcing member. The output end of the motor 66 is fixedly connected to the connecting cylinder 62. Gear 63 and connecting cylinder 62 are rotatably connected to a cylinder body 67. A gear ring 65 is fixedly connected to the middle of the outer side of the cylinder body 67. The outer side of the gear ring 65 meshes with the outer gear of the spur gear 63. A conical cylinder 64 is fixedly connected to one end of the connecting cylinder 62 near the transition component 5. The conical cylinder 64 connects with the winding structure of the cable feeding component 3 and the transition component 5 to achieve a stepped diameter reduction through multiple windings. Then, the layered stranding is completed by rotating the cylinder body 67, so that the loose tube is tightly and evenly arranged around the central reinforcing member. After stranding, the cable core is neither loose nor shifted. The conical cylinder 64 is fixedly connected to a fixed plate 69 at its end. The fixed plate 69, positioning plate 54, and intermediate plate 53 have holes through which cables pass. A V-shaped plate 68 is fixedly connected to the inner wall of the cylinder 67 near one end of the conical cylinder 64. Multiple V-shaped plates 68 are evenly distributed inside the cylinder 67, providing precise guidance for the loose tube and limiting its movement during rotation within the cylinder 67. Radial displacement ensures that the twisting trajectory of each loose tube is consistent, achieving uniform circumferential twisting of the loose tubes and avoiding problems such as stacking and uneven spacing of loose tubes. A cylinder 610 is slidably connected to the inner wall of the cylinder 67. An arc plate 611 is fixedly connected to the end of the cylinder 610 away from the cylinder 67. A return spring 612 is sleeved on the outer side of the cylinder 610. The two ends of the return spring 612 are fixedly connected to the inside of the cylinder 67 and the arc plate 611, respectively. There are multiple arc plates 611, which are evenly distributed inside the cylinder 67.

[0020] Example 3, based on Examples 1 and 2, combined with... Figures 9 to 11As can be seen, the limiting component 7 includes a housing 72 and a fixed post fixedly installed at the bottom of the housing 72. An intermediate cylinder 74 is provided in the middle of the interior of the housing 72, and an elastic plate 75 is fixedly connected to the outside of the intermediate cylinder 74. The flexible structure of the intermediate cylinder 74 supported by the elastic plate 75 can dynamically correct slight deviations during the cable core transportation process in real time, ensuring that the cable core is transported straight throughout the process. At the same time, the elastic deformation characteristics can adapt to the alignment requirements of cable cores with different outer diameters, without the need to replace parts, and have strong versatility. When the equipment is running, mechanical vibration will be generated, or slight shaking or impact will occur during the high-speed transportation of the cable core. The elastic plate will undergo flexible elastic deformation with the vibration, converting the rigid vibration impact into the buffer force of elastic deformation, reducing the transmission of vibration to the cable core, effectively preventing the loose tube and internal optical fiber from being slightly bent or squeezed due to vibration, fundamentally preventing damage to the optical fiber transmission performance, and ensuring the stability of optical cable signal transmission. There are multiple elastic plates 75, which are evenly distributed on the outside of the intermediate cylinder 74. On one side, the end of the elastic plate 75 furthest from the intermediate cylinder 74 is fixedly connected to the housing 72. An inner cavity 78 is formed in the middle of the interior of the intermediate cylinder 74. A feed hole 73 is formed at the top of the housing 72, and a discharge hole 76 is formed at the bottom of the housing 72. The feed hole, discharge hole, and inner cavity form a closed filling space. When the cable core is inserted and removed, it fits tightly against the hole wall. Combined with the sealing structure of the intermediate cylinder, this effectively prevents water-blocking grease from splashing and overflowing during the filling process, ensuring that the grease is evenly filled into every gap of the cable core. To improve the overall water resistance of the optical cable and prevent water from seeping in and damaging the optical fiber, the feed hole 73 and the discharge hole 76 penetrate the housing 72 and extend into the interior of the intermediate cylinder 74 and communicate with the inner cavity 78. The inner wall of the inner cavity 78 is fixedly connected with a partition 77. The intermediate cylinder 74 is located on both sides of the inner cavity 78 and is inclined. There are multiple partitions 77, which are arranged inside the inner cavity 78. The inner side of the end of the intermediate cylinder 74 is provided with an annular groove 71.

[0021] A cable core stranding device and manufacturing process for optical cable production includes the following steps: S1. Line feeding guide: The central reinforcing member passes through the round hole 34 in the middle of the line feeding assembly 3 and the loose tube through the through hole 35. The loose tube is initially gathered by the elastic clamping of the sliding block 38 and the roller 312 and the conical block 311, so that the loose tube is evenly distributed along the circumference of the reinforcing member. S2. Gathering and cleaning: The cable is threaded into the transition component 5 to complete the conical gathering. The wave brush 59 cleans the outer wall of the loose tube. The cylinder 51 and the slide cylinder 52 are sealed and protected to ensure that the cable is conveyed straight to the stranding mold 6. S3. Cable stranding: After the cable is gathered twice by the conical cylinder 64 on the stranding mold 6, the motor 66 drives the cylinder 67 to rotate to achieve the stranding of the loose tube and the reinforcing member. The inner arc plate 611 of the cylinder 67 adaptively shapes the cable core. S4. Water-blocking filling: The cable core is inserted into the limiting component 7, and at the same time, water-blocking grease is filled into the inner cavity 78 through the feed hole 73 to the gap between the cable cores. S5. Cable winding: The shaped cable core is pulled to the winding drum 8. The winding speed is linked with the stranding and unwinding speed to achieve constant tension and regular winding.

[0022] In use, the central reinforcing member is inserted through the circular hole 34 in the middle of the wire feeding assembly 3. At the same time, multiple intermediate rollers 310 inside the circular hole 34 guide the central reinforcing member. Multiple loose tubes are evenly inserted through the through holes 35 on the side of the wire feeding assembly 3. The balls 36 inside the through holes 35 limit and guide the loose tubes. At the same time, the balls 36 on the inner wall of the through holes 35 convert sliding friction into rolling friction, so that the loose tubes can pass through without scratches. After the loose tubes pass through, the V-shaped sliding block 38 flexibly clamps them under the elastic force of the compression spring 39. The rollers 312 on both sides of the sliding block 38 roll and guide again. With the help of the conical block 311 on the side plate 32, the loose tubes are evenly distributed along the circumference of the central reinforcing member, completing the initial gathering and positioning.

[0023] After being guided by the wire feeding assembly 3, the central reinforcing member and the loose sleeve are inserted into the cylinder 51 and the slide cylinder 52 of the transition assembly 5. They are then conveyed towards the stranding mold 6 along the central holes of the intermediate plate 53 and the positioning plate 54. They are tapered and gradually move towards the center within the transition assembly 5 to form an arrangement structure that matches the stranding mold 6.

[0024] After being gathered, the cable is passed through the conical cylinder 64 of the stranding mold 6 to complete a secondary gathering, so that the loose tube is tightly arranged around the central reinforcement. Then it enters the cylinder. After the motor 66 is started, the output end drives the spur gear 63 to rotate. The spur gear 63 meshes with the toothed ring 65 on the outside of the cylinder 67, driving the cylinder 67 to rotate around the cable axis. Multiple V-shaped plates 68 inside the cylinder 67 guide the loose tube, realizing the layered stranding of the loose tube and the central reinforcement. During the stranding process, the arc plate 611 inside the cylinder 67 is always in contact with the outer wall of the cable core under the elastic action of the return spring 612. When the outer diameter of the cable core changes, the arc plate 611 can slide flexibly along the inner wall of the cylinder 67 to realize the self-adaptive shaping of the cable core, ensure the roundness of the cable core after stranding, and prevent the loose tube from shifting or loosening.

[0025] After stranding, the cable core passes through the cylinder 67 of the stranding mold 6 and into the interior of the intermediate cylinder 74 of the limiting component 7. At the same time, water-blocking grease is filled into the interior cavity 78 through the feed hole 73. The grease fills all the gaps between the loose tubes and between the loose tubes and the central reinforcing member, achieving longitudinal water blocking of the cable core. In addition, multiple elastic plates 75 on the outside of the intermediate cylinder 74 form elastic support. When the cable core is slightly deviated during transport, the elastic plates 75 undergo elastic deformation, driving the intermediate cylinder 74 to finely adjust its position, achieving dynamic centering and correction of the cable core. After the finished cable core, which has completed water blocking filling and shaping, passes through the limiting component 7, it is pulled onto the winding drum 8 for winding.

Claims

1. A cable core stranding device for optical cable manufacturing, characterized in that: include The base (1) has a winding drum (8) fixedly connected to the top side end of the base (1). The wire feeding assembly (3) is located at the top of the base (1) away from the winding drum (8), and a support plate (4) is fixedly installed on the outside of the wire feeding assembly (3). The support plate (4) is fixedly connected to the base (1), and a protective cover (2) is fixedly connected to the top of the base (1) near the wire feeding assembly (3). It also includes: a transition component (5), a stranding mold (6) and a limiting component (7) arranged sequentially from the wire feeding component (3) to the winding drum (8). The transition component (5) and the stranding mold (6) are located inside the protective cover (2). The base (1) is fixedly connected to the top of the transition component (5) with a slide rail (10). The top of the slide rail (10) is slidably connected to a vertical plate (9). The vertical plate (9) is fixedly connected to the transition component (5). The wire feeding assembly (3) includes a circular plate (31), and a side plate (32) is fixedly connected to the end face of the circular plate (31). There are two side plates (32), which are symmetrically arranged with the circular plate (31) as the center. A circular hole (34) is opened in the middle of the circular plate (31), and a through hole (35) is opened on the outer side of the circular plate (31). The circular hole (34) and the through hole (35) completely penetrate the circular plate (31) and the side plate (32) along the axial direction. There are multiple through holes (35), which are evenly distributed with the circular hole (34) as the center. A ball bearing (36) is rotatably connected to the inner wall of the through hole (35) on the circular plate (31). The through hole (35) is an eccentric ring, and the diameter of the through hole (35) gradually decreases from the edge of the circular plate (31) to the side close to the circular hole (34).

2. The cable core stranding equipment for optical cable manufacturing according to claim 1, characterized in that: A ring (33) is fixedly connected to the outer side of the side plate (32) located on the side of the circular plate (31) near the protective cover (2). A fixing block (37) is fixedly connected to the side of the side plate (32) near the ring (33). There are multiple fixing blocks (37). Two fixing blocks (37) are divided into a group. A group of fixing blocks (37) are symmetrically arranged with the through hole (35) as the center. A side groove (313) is opened inside the fixing block (37).

3. The cable core stranding equipment for optical cable manufacturing according to claim 2, characterized in that: The inner wall of the side groove (313) is slidably connected to a sliding block (38), the sliding block (38) is V-shaped, and the outer side of the sliding block (38) is fixedly connected to a compression spring (39). The inner wall of the circular hole (34) of the circular plate (31) is fixedly connected to an intermediate roller (310). There are multiple intermediate rollers (310), and the multiple intermediate rollers (310) are evenly distributed inside the circular hole (34). The side of the sliding block (38) is rotatably connected to a roller (312), and the outer side of the side plate (32) near the circular hole (34) is fixedly connected to a conical block (311).

4. The cable core stranding equipment for optical cable manufacturing according to claim 1, characterized in that: The transition component (5) includes a cylinder (51), with a slide cylinder (52) slidably connected to one end of the cylinder (51) away from the side plate (32). A middle plate (53) and a positioning plate (54) are fixedly connected to both ends of the slide cylinder (52), and a corrugated pipe (56) is fixedly connected to one end of the cylinder (51) away from the side plate (32). A square hole (55) is provided on the outer side of the cylinder (51).

5. The cable core stranding equipment for optical cable manufacturing according to claim 4, characterized in that: The inner wall of the square hole (55) is slidably connected to a slider (57), and the slider (57) is fixedly connected to the slide cylinder (52). The inner wall of the cylinder (51) is slidably connected to a sliding ring (58), and the sliding ring (58) is fixedly connected to the slider (57). There are two square holes (55), and the two square holes (55) are symmetrically arranged on the cylinder (51). The inner wall of the sliding ring (58) is fixedly connected to a brush (59), and the brush (59) is wavy.

6. The cable core stranding equipment for optical cable manufacturing according to claim 1, characterized in that: The twisting die (6) includes a fixed base (61), a connecting cylinder (62) is fixedly connected to the top of the fixed base (61), a motor (66) is fixedly connected to the outside of the fixed base (61), a spur gear (63) is fixedly connected to the output end of the motor (66), a cylinder body (67) is rotatably connected inside the connecting cylinder (62), a gear ring (65) is fixedly connected to the middle of the outside of the cylinder body (67), a conical cylinder (64) is fixedly connected to one end of the connecting cylinder (62) near the transition component (5), and a fixed plate (69) is fixedly connected to the end of the conical cylinder (64).

7. The cable core stranding device for optical cable preparation according to claim 6, characterized in that: A V-shaped plate (68) is fixedly connected to the inner wall of the cylindrical body (67) near the conical cylinder (64). A cylinder (610) is slidably connected to the inner wall of the cylindrical body (67). An arc plate (611) is fixedly connected to the end of the cylinder (610) away from the cylindrical body (67). A return spring (612) is sleeved on the outer side of the cylinder (610). There are multiple arc plates (611), and the multiple arc plates (611) are evenly distributed inside the cylindrical body (67).

8. The cable core stranding device for optical cable preparation according to claim 1, characterized in that: The limiting component (7) includes a housing (72), an intermediate cylinder (74) is provided in the middle of the interior of the housing (72), an elastic plate (75) is fixedly connected to the outer side of the intermediate cylinder (74), there are multiple elastic plates (75), the multiple elastic plates (75) are evenly distributed on the outer side of the intermediate cylinder (74), the end of the elastic plate (75) away from the intermediate cylinder (74) is fixedly connected to the housing (72), and an inner cavity (78) is opened in the middle of the interior of the intermediate cylinder (74).

9. The cable core stranding equipment for optical cable manufacturing according to claim 8, characterized in that: The top of the housing (72) is provided with a feed hole (73), and the bottom of the housing (72) is provided with a discharge hole (76). The feed hole (73) and the discharge hole (76) penetrate the housing (72) and extend into the interior of the intermediate cylinder (74) and communicate with the inner cavity (78). The inner wall of the inner cavity (78) is fixedly connected with a partition (77). There are multiple partitions (77), and multiple partitions (77) are arranged inside the inner cavity (78). The inner side of the end of the intermediate cylinder (74) is provided with an annular groove (71).

10. A cable core stranding process for optical cable manufacturing according to any one of claims 1-9, characterized in that, It includes the following steps: S1. The wire laying guide, the central reinforcing member passes through the round hole (34) in the middle of the wire laying assembly (3), the loose tube passes through the hole (35), and is elastically clamped by the sliding block (38) and initially gathered by the roller (312) and the conical block (311) so that the loose tube is evenly distributed along the circumference of the reinforcing member; S2. Gathering and cleaning: The cable is inserted into the transition component (5) to complete the conical gathering. The wave brush (59) cleans the outer wall of the loose tube. The cylinder (51) and the slide cylinder (52) are sealed and protected to ensure that the cable is conveyed straight to the stranding mold (6). S3, cable stranding: after the cable is gathered twice by the conical cylinder (64) on the stranding mold (6), the motor (66) drives the cylinder (67) to rotate to realize the stranding of the loose tube and the reinforcing member. The inner arc plate (611) of the cylinder (67) adaptively shapes the cable core. S4, water-blocking filling, the cable core is inserted into the limiting component (7), and at the same time, water-blocking grease is filled into the inner cavity (78) through the feed hole (73) to the gap between the cable cores. S5. Cable winding: The shaped cable core is pulled to the winding drum (8). The winding speed is linked with the stranding and unwinding speed to achieve constant tension and regular winding.

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