Cylindrical commutating winding type optical fiber downwire device and optical fiber downwire process

Abstract

The application relates to a cylindrical commutating winding type optical fiber down wire device, belonging to the technical field of optical fiber production, which comprises a columnar winding body, a wire conveying and moving assembly and a tension device; the optical fiber can be unwound from a winding-off wheel and wound on the columnar winding body after passing through the tension device and the wire conveying and moving assembly; the wire conveying and moving assembly is used for pulling the optical fiber to move along the axial direction parallel to the columnar winding body; the columnar winding body can rotate, so that the optical fiber is spirally wound on the columnar winding body; the end of the columnar winding body is provided with a commutating wire guide part; the commutating wire guide part is used for guiding and transitioning the optical fiber when the optical fiber is wound to the end of the columnar winding body, so as to cooperate with the reverse movement of the wire conveying and moving assembly and the reverse rotation of the columnar winding body, so that the optical fiber is reversely spirally wound on the columnar winding body; and the tension device is used for applying tension to the optical fiber, so that the optical fiber is tightly wound on the columnar winding body. The application has the effect of winding a longer length of optical fiber in a smaller occupied space, improving the space utilization.

Description

Technical Field

[0001] This application relates to the field of optical fiber production technology, and in particular to a cylindrical reversible winding optical fiber unwinding device and optical fiber unwinding process. Background Technology

[0002] Before production, testing, assembly, or subsequent use, optical fibers often need to be cut to a predetermined length. In existing technologies, to obtain optical fibers of a specific length, a winding spool, length-fixing wheel, or similar winding mechanism is typically used to wind the fiber, and the fixed-length cutting is achieved by controlling the number of winding loops or the winding path length. The fibers are then arranged and wound onto the winding spool, each row of fibers is fixed with adhesive, and finally, the fiber loops are cut to obtain the desired fiber length. While this method can meet the fixed-length requirements of optical fibers to a certain extent, it still has shortcomings in practical applications.

[0003] Existing fiber winding methods typically involve using a winding component with a predetermined circumference to wind the optical fiber one or more times to reach the target length. This method is feasible for shorter optical fibers; however, when the target fiber length increases, if the design approach of one turn corresponding to the length is still adopted, the size of the winding component needs to be increased accordingly, resulting in a significant increase in the space occupied by the equipment, which is not conducive to the miniaturization and compact layout of the equipment. Summary of the Invention

[0004] To address the aforementioned issues, this application provides a cylindrical reversible winding optical fiber unwinding device and an optical fiber unwinding process.

[0005] The cylindrical commutation-winding optical fiber unwinding device provided in this application adopts the following technical solution: A cylindrical reversing winding optical fiber unwinding device includes a cylindrical winding body, a transmission line moving assembly, and a tensioning device. The optical fiber can be released from the unwinding wheel and wound onto the cylindrical winding body after passing through the tension device and the transmission line moving assembly; The transmission line moving assembly is used to pull the optical fiber to move along an axial direction parallel to the columnar winding body. The columnar winding body is rotatable to cooperate with the transmission line moving assembly to spirally wind the optical fiber onto the columnar winding body. The end of the cylindrical winding body is provided with a reversing conductor section. The reversing conductor section is used to guide the optical fiber when the optical fiber is wound to the end of the cylindrical winding body, so as to cooperate with the reverse movement of the transmission line moving assembly and the reverse rotation of the cylindrical winding body, so that the optical fiber is wound in a reverse spiral on the cylindrical winding body. The tension device is used to apply tension to the optical fiber, so that the optical fiber is tightly wound on the cylindrical winding body.

[0006] By adopting the above technical solution, after the optical fiber is released from the unwinding wheel, it passes through the tension device and the transmission line moving assembly and is wound onto the cylindrical winding body. The transmission line moving assembly moves along the axial direction of the cylindrical winding body and rotates in conjunction with the cylindrical winding body, causing the optical fiber to spirally wind around the cylindrical winding body. When the optical fiber reaches the end of the cylindrical winding body, it is guided and transitioned by the reversing conductor section, and with the reverse movement of the transmission line moving assembly and the reverse rotation of the cylindrical winding body, the optical fiber continues to spirally wind in the reverse direction, thereby forming a reciprocatingly wound optical fiber roll on the cylindrical winding body. In actual use, the number of turns of the optical fiber can be determined according to the required optical fiber length and the winding length of the cylindrical winding body. After reaching the set number of turns, the optical fiber at the reversing conductor section is cut and removed. Compared with the method of using a large-diameter disk for winding, this application utilizes the circumferential and axial spaces of the cylindrical winding body for winding, which can achieve the winding of a longer optical fiber in a smaller space, thereby effectively reducing the overall space occupied by the equipment and improving space utilization.

[0007] Optionally, the reversing conductor section includes two winding rods, each of which is disposed at one end of the cylindrical winding body. The extension direction of the winding rods is away from the central axis of the cylindrical winding body, and the end of the winding rod away from the cylindrical winding body is disposed towards the wire feeding moving assembly. The two winding rods are disposed opposite to each other.

[0008] By adopting the above technical solution, the two winding rods are arranged opposite to each other, which can form corresponding reversing guidance structures at both ends of the cylindrical winding body. This allows the optical fiber to be guided through the corresponding winding rod after being wound to the end of the cylindrical winding body in the forward direction, and to start winding again from the corresponding position when the cylindrical winding body rotates in the reverse direction. This makes the end position of the cylindrical winding body in the forward direction correspond to the starting position of the reverse rotation, which helps to simplify the system control logic and improve the continuity and stability of the optical fiber reversing winding.

[0009] Optionally, a wire guard plate is provided at the end of the cylindrical winding body. The wire guard plate is located near the winding rod. The wire guard plate includes a mounting surface and a wire-connecting surface. The mounting surface is fixed to the end face of the cylindrical winding body. The wire-connecting surface is located away from the central axis of the cylindrical winding body relative to the outer peripheral surface of the cylindrical winding body. The wire-connecting surface and the mounting surface are connected by a chamfer transition.

[0010] By adopting the above technical solution, the optical fiber first transitions to the bonding surface via the guide angle of the protective plate during commutation winding, and is then wound onto the winding rod under the guidance of the bonding surface. This creates a clearance between the optical fiber and the end circumferential surface of the cylindrical winding body, thereby avoiding direct friction between the optical fiber and the end circumferential surface of the cylindrical winding body during commutation. This reduces the risk of scratching the optical fiber due to uneven processing, burrs, or sharp edges on the end circumferential surface of the cylindrical winding body, and improves the surface protection effect of the optical fiber.

[0011] Optionally, it also includes a tension screening wheel assembly, which is disposed between the tension device and the cylindrical winding body. The tension screening wheel assembly is used to change the running path of the optical fiber, causing the optical fiber to bend at a large angle, so as to cooperate with the tension device to screen the optical fiber.

[0012] By adopting the above technical solution, the tension screening wheel group causes the optical fiber to bend at a large angle by changing the running path of the optical fiber. This further increases the stress screening conditions on the optical fiber based on the tension applied by the tension device. As a result, optical fibers with damage, microcracks, or insufficient strength can be preferentially broken under the combined action of tension and bending, thereby improving the screening effect and accuracy of defective optical fibers.

[0013] Optionally, the transmission line moving assembly includes a guide rail, on which a moving seat is slidably disposed. The moving seat is driven by a servo unit, and the moving direction of the moving seat is parallel to the central axis of the cylindrical winding body. A first guide wheel is disposed on the moving seat, and the optical fiber is wound around the cylindrical winding body after passing through the first guide wheel.

[0014] Optionally, the tension device includes a swing arm and a sensor. The swing arm is rotatably connected to a rotating shaft and can swing around the rotating shaft. A second guide wheel is provided at the end of the swing arm away from the unwinding wheel, and a counterweight is provided at the end of the swing arm close to the unwinding wheel. The second guide wheel abuts against the optical fiber. The weight of the end of the swing arm with the counterweight is less than the weight of the end with the second guide wheel. The unwinding wheel is driven to rotate by a motor, and the sensor is used to detect the position of the swing arm to adjust the rotation speed of the motor so that the optical fiber can be tightly wound on the cylindrical winding body and the commutation conductor.

[0015] By adopting the above technical solution, the pendulum, under the combined action of the second guide wheel and the counterweight, can dynamically hold the optical fiber. When the fiber tension changes, the pendulum swings around the axis, and the sensor detects the position of the pendulum and adjusts the rotation speed of the motor driving the unwinding wheel according to the position of the pendulum. When the fiber tension is too low, the second guide wheel further holds the fiber under the action of its own larger weight, and the unwinding speed is reduced by adjusting the motor speed to increase the fiber tension. When the fiber tension is too high, the pendulum swings, causing the sensor to provide feedback on the corresponding position, and the unwinding speed is increased by adjusting the motor speed to reduce the fiber tension. Thus, the optical fiber can maintain a relatively stable tension when wound on the cylindrical winding body, and the optical fiber is tightly wound on the cylindrical winding body and the commutation conductor, which helps to improve the stability of the optical fiber spiral winding and commutation winding process, and reduces the situation of loose fiber, deviation, or loose winding at the commutation point.

[0016] Optionally, the cylindrical winding body includes two circular end plates, which are connected to a rotating shaft. The central axis of the rotating shaft passes through the center of the circular end plates. Several circular rods are arranged between the two circular end plates, and all the circular rods are arranged around the central axis of the rotating shaft.

[0017] By adopting the above technical solution, the distance between the round rod and the rotating shaft can be adjusted, thereby allowing adjustment of the winding diameter on the outer circumference of the cylindrical winding body. Therefore, the winding length of a single turn of optical fiber can be flexibly adjusted according to different optical fiber unwinding length requirements or winding conditions, improving the applicability and flexibility of the device.

[0018] This application provides a fiber optic wire cutting process using the following technical solution: An optical fiber casting process, using the aforementioned cylindrical commutated winding optical fiber casting device, includes the following steps: S1. Release the optical fiber from the unwinding reel; S2. Control the transmission line moving component to pull the optical fiber to move in a direction parallel to the axis of the cylindrical winding body, and at the same time control the cylindrical winding body to rotate, so that the optical fiber is spirally wound on the cylindrical winding body in the first direction. S3. After the optical fiber is wound to the end near the cylindrical winding body, guide the optical fiber through the commutation conductor section for transition. S4. Control the transmission line moving component to move in the opposite direction, and at the same time control the cylindrical winding body to rotate in the opposite direction, so that the optical fiber is spirally wound on the cylindrical winding body in the second direction, and control the position of the optical fiber roll formed by spiral winding in the second direction relative to the optical fiber roll formed by spiral winding in the first direction, and the optical fibers of the optical fiber roll formed by spiral winding in the first direction and the optical fiber roll formed by spiral winding in the second direction are arranged side by side. S5. Repeat steps S2 to S4 to make the optical fiber reciprocate on the cylindrical winding body.

[0019] S6. After the optical fiber has completed reciprocating winding, the optical fiber wound on the cylindrical winding body is fixed, and the optical fiber at the commutation conductor is cut to remove the optical fiber from the cylindrical winding body.

[0020] By adopting the above technical solution, optical fibers can be reciprocated spirally wound in both directions on a cylindrical winding body according to a predetermined trajectory. Furthermore, the fiber rolls formed by the spiral winding in the first direction and the fiber rolls formed by the spiral winding in the second direction are arranged side-by-side, thereby improving the neatness of the fiber winding arrangement. After the reciprocating winding is completed, the optical fiber can be easily removed from the cylindrical winding body through fixing and cutting operations, which is beneficial for obtaining optical fibers of consistent length and regular arrangement in the subsequent process.

[0021] Optionally, in step S4, the fiber rolls formed by spiral winding along the second direction and the fiber rolls formed by spiral winding along the first direction are spaced apart, so that the fiber rolls formed by spiral winding along the first direction and the fiber rolls formed by spiral winding along the second direction are arranged independently.

[0022] By adopting the above technical solution, the optical fiber rolls formed by spiral winding along the first direction and the optical fiber rolls formed by spiral winding along the second direction are spaced apart and arranged independently, so that the optical fiber formed by forward winding and the optical fiber formed by reverse winding each constitute two independent strands. This makes the boundary between the two optical fibers clearer, reduces mutual interference between the forward and reverse optical fibers during winding, fixing, and removal, and facilitates subsequent separate cutting and removal.

[0023] Optionally, in step S6, the optical fiber at the commutation conductor section at one end of the cylindrical winding body is cut off, and the optical fiber is spirally removed from the cylindrical winding body along the first direction or the second direction. After the optical fiber passes through the commutation conductor section at the other end, the remaining optical fiber is spirally removed from the cylindrical winding body along the second direction or the first direction.

[0024] By adopting the above technical solution, the optical fiber is only cut at the commutation conductor section at one end of the cylindrical winding body, so that the optical fiber formed by spiral winding in the first direction and the optical fiber formed by spiral winding in the second direction are still continuously connected through the commutation conductor section at the other end. Therefore, when taking the fiber, a portion of the optical fiber can be spirally removed from the cylindrical winding body in one direction first, and then the other portion of the optical fiber can be spirally removed in the opposite direction after transitioning through the commutation conductor section at the other end, thereby obtaining a continuous and longer optical fiber, which is beneficial for meeting the requirements of cutting longer optical fibers.

[0025] In summary, this application includes at least one of the following beneficial technical effects: 1. Compared with the method of using a large-diameter disk for winding, this application uses the circumferential and axial spaces of the cylindrical winding body for winding, which can achieve the winding of a longer optical fiber in a smaller space, thereby effectively reducing the overall space occupied by the equipment and improving space utilization. 2. The two winding rods are arranged opposite each other, which can form corresponding reversing guidance structures at both ends of the cylindrical winding body. After the optical fiber is wound to the end in the forward rotation of the cylindrical winding body, it is guided by the corresponding winding rod and then restarted from the corresponding position when the cylindrical winding body rotates in the reverse direction. This makes the end position of the forward rotation of the cylindrical winding body correspond to the starting position of the reverse rotation, which helps to simplify the system control logic and improve the continuity and stability of optical fiber reversing winding. 3. The tension screening wheel assembly alters the optical fiber's path, causing it to bend at a large angle. This further increases the stress on the fiber during screening, building upon the tension applied by the tension device. Consequently, damaged, microcracked, or insufficiently strong fibers are preferentially broken under the combined effect of tension and bending, improving the screening efficiency and accuracy of defective fibers. 4. The fiber rolls formed by spiral winding along the first direction and the fiber rolls formed by spiral winding along the second direction are spaced apart and arranged independently, so that the fiber formed by forward winding and the fiber formed by reverse winding each constitute two independent strands. This makes the boundary between the two fiber strands clearer, reduces mutual interference between the forward and reverse fibers during winding, fixing and removal, and facilitates subsequent separate cutting and removal. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application.

[0027] Figure 2 yes Figure 1 An enlarged schematic diagram of part A in the middle.

[0028] Figure 3 yes Figure 1 Enlarged schematic diagram of part B.

[0029] Figure 4 This is a schematic diagram illustrating the structure of a circular end plate with a sliding groove in an embodiment of this application.

[0030] Figure 5 This is a flowchart illustrating the wire feeding process in an embodiment of this application.

[0031] Explanation of reference numerals in the attached drawings: 1. Columnar winding body; 11. Circular end plate; 111. Mounting hole; 12. Rotating shaft; 13. Round rod; 2. Wire feeding moving assembly; 21. Guide rail; 22. Moving seat; 221. Moving base plate; 222. Mounting frame; 23. Servo drive unit; 24. First guide wheel; 3. Tension device; 31. Swing rod; 32. Sensor; 33. Rotating shaft; 34. Counterweight; 35. Second guide wheel; 4. Reversing conductor section; 41. Winding rod; 42. Wire guard plate; 421. Mounting surface; 422. Wire contact surface; 5. Tension screening wheel group; 51. Guide wheel; 6. Unwinding wheel. Detailed Implementation

[0032] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0033] This application discloses a cylindrical reversible winding optical fiber unwinding device.

[0034] like Figure 1In this embodiment, a cylindrical reversing winding optical fiber unwinding device is provided, including a cylindrical winding body 1, a transmission line moving assembly 2, and a tension device 3.

[0035] The cylindrical winding body 1 serves as the winding carrier for the optical fiber, which is wound around its outer circumference. The transmission line moving assembly 2 pulls the optical fiber and moves it along the axial direction of the cylindrical winding body 1. The cylindrical winding body 1 can rotate around its central axis to cooperate with the transmission line moving assembly 2 in winding the optical fiber around its outer circumference. A tension device 3 is positioned along the optical fiber's transmission path to apply tension to the fiber, ensuring it adheres tightly to the surface of the cylindrical winding body 1 during winding, preventing loosening, misalignment, or localized stacking.

[0036] Specifically, the optical fiber is released from the unwinding reel 6 and, after passing through the tension device 3 and the transmission line moving assembly 2, is wound onto the cylindrical winding body 1. While the transmission line moving assembly 2 pulls the optical fiber, it also moves in a direction parallel to the axial direction of the cylindrical winding body 1; simultaneously, the cylindrical winding body 1 rotates synchronously, causing the optical fiber to form a helical winding along the outer circumference of the cylindrical winding body 1. In other words, the optical fiber is wound circumferentially as the cylindrical winding body 1 rotates, and simultaneously moves gradually axially under the drive of the transmission line moving assembly 2, thus forming a continuous helical winding trajectory.

[0037] To enable the optical fiber to reciprocate on the cylindrical winding body 1, a commutation conductor section 4 is provided at the end of the cylindrical winding body 1. When the optical fiber is wound to one end of the cylindrical winding body 1, it is guided and transitioned through the commutation conductor section 4. At this time, the transmission line moving assembly 2 moves in the opposite direction, and the cylindrical winding body 1 rotates synchronously in the opposite direction, thereby switching the original helical winding direction of the optical fiber to the opposite helical winding direction, and allowing it to continue winding on the cylindrical winding body 1. Thus, the optical fiber can reciprocate helically wound in two opposite directions on the cylindrical winding body 1.

[0038] In this embodiment, the function of the commutation guide section 4 is to provide a stable guiding transition path for the optical fiber after it is wound to the end of the cylindrical winding body 1, so that the optical fiber can smoothly transition from one winding direction to another, thereby ensuring the continuity and stability of the optical fiber winding at the commutation point. By setting the commutation guide section 4, disordered deflection of the optical fiber at the end of the cylindrical winding body 1 can be avoided, which helps to improve the controllability of the optical fiber commutation winding process.

[0039] In this embodiment, the tension device 3 is used to continuously apply tension to the optical fiber during the fiber unwinding process. Through the action of the tension device 3, the optical fiber can remain taut when wound around the cylindrical winding body 1, thus ensuring the optical fiber is tightly wound onto the cylindrical winding body 1. This improves the regularity of the optical fiber spiral winding and also helps to ensure the optical fiber is stably attached and wound when it reaches the commutation conductor section 4, reducing the occurrence of loose wires, detachment, or insufficient winding at the commutation position.

[0040] Therefore, the cylindrical reversing winding optical fiber unwinding device in this embodiment, through the cooperation between the cylindrical winding body 1, the transmission line moving component 2, the reversing conductor part 4 and the tension device 3, enables the optical fiber to achieve continuous forward and reverse reciprocating spiral winding on the cylindrical winding body 1, and can complete the orderly winding of a long length of optical fiber in a small space, providing a basis for subsequent fixing, cutting and wire taking.

[0041] In this embodiment, the commutation conductor section 4 includes two winding rods 41, which are respectively disposed at both ends of the cylindrical winding body 1. Each winding rod 41 is located at a corresponding end, and the extension direction of the winding rod 41 is away from the central axis of the cylindrical winding body 1. Further, the end of the winding rod 41 away from the cylindrical winding body 1 is disposed towards the transmission line moving assembly 2, so that after the optical fiber is wound to the end of the cylindrical winding body 1, it can be wound onto the corresponding winding rod 41 with the cooperation of the continued movement of the transmission line moving assembly 2, thereby realizing the commutation guidance of the optical fiber at the end of the cylindrical winding body 1. The two winding rods 41 are disposed opposite to each other to form corresponding commutation positions at both ends of the cylindrical winding body 1, so that the optical fiber can be guided into the reverse winding starting position through the corresponding winding rod 41 after the forward winding is completed, so that the end position of the cylindrical winding body 1 during forward rotation corresponds to the starting position during reverse rotation, which is beneficial to improving the continuity and stability of the commutation winding process.

[0042] In this embodiment, the central axis of the winding rod 41 intersects with the central axis of the cylindrical winding body 1, preferably perpendicularly. By adopting this arrangement, the winding rod 41 can form a relatively clear conductor position on the outer side of the end of the cylindrical winding body 1, which facilitates the winding and reversal of the optical fiber at the end.

[0043] It should be noted that this application is not limited to the specific arrangement described above. In other embodiments, the two winding rods 41 may also be arranged symmetrically about the rotation axis of the cylindrical winding body 1. Furthermore, in other embodiments, the winding rods 41 and the end faces of the cylindrical winding body 1 may form a predetermined angle, rather than being limited to being perpendicular to the central axis of the cylindrical winding body 1. As long as the winding rods 41 extend as a whole toward the side where the transmission line moving assembly 2 is located, and can provide a guiding transition path for the optical fiber when it is wound to the end of the cylindrical winding body 1, the function of the commutation conductor of this application can be realized. In addition, in other embodiments, the central axis of the winding rods 41 may also be arranged in a different plane from the central axis of the cylindrical winding body 1. As long as the requirements for optical fiber commutation winding are met, they should fall within the protection scope of this application.

[0044] In this embodiment, a mounting plate is connected to the end of the winding rod 41. The mounting plate is fixedly disposed on the end face of the cylindrical winding body 1 to realize the installation of the winding rod 41 at the end of the cylindrical winding body 1. Specifically, the mounting plate can be fixed to the end face of the cylindrical winding body 1 by welding, screwing, riveting, or integral molding. The winding rod 41 is fixedly connected to the mounting plate, thereby making the winding rod 41 stably disposed on the outer side of the end of the cylindrical winding body 1. By providing a mounting plate, it is convenient to install and position the winding rod 41, and it is also convenient to adjust the installation position and installation angle of the winding rod 41 according to different commutation requirements.

[0045] In this embodiment, a wire guard plate 42 is provided at the end of the cylindrical winding body 1, and the wire guard plate 42 is located near the winding rod 41. The wire guard plate 42 includes a mounting surface 421 and a wire-connecting surface 422. The mounting surface 421 is fixed to the end face of the cylindrical winding body 1, and the wire-connecting surface 422 is disposed away from the central axis of the cylindrical winding body 1 relative to the outer peripheral surface of the cylindrical winding body 1. The wire-connecting surface 422 and the mounting surface 421 are connected by a chamfer transition.

[0046] Specifically, in this embodiment, the cable guard plate 42 has an overall L-shaped structure, with the mounting surface 421 and the bonding surface 422 connected to each other, and preferably perpendicular to each other. The mounting surface 421 is attached to and fixed to the end face of the cylindrical winding body 1 to realize the installation of the cable guard plate 42 at the end of the cylindrical winding body 1; the bonding surface 422 extends from the mounting surface 421 in a direction away from the central axis of the cylindrical winding body 1, and the bonding surface 422 is located at a more outer position relative to the circumferential surface of the end of the cylindrical winding body 1. Thus, when the optical fiber is wound to the end of the cylindrical winding body 1 and reversed, the optical fiber can first transition to the bonding surface 422 through the guide angle, and then move along the bonding surface 422 before being wound onto the winding rod 41, thereby avoiding direct contact between the optical fiber and the circumferential surface of the end of the cylindrical winding body 1 during the reversal process.

[0047] Since the peripheral surface of the end of the cylindrical winding body 1 usually needs to be processed, in the actual manufacturing process, there may be local unevenness, burrs, or sharp edges on the peripheral surface of the end. By setting the aforementioned guard plate 42, the optical fiber can preferentially contact the guard plate 42 during the commutation winding process, rather than directly rubbing against the peripheral surface of the end of the cylindrical winding body 1. This reduces the risk of the peripheral surface of the end of the cylindrical winding body 1 scratching the optical fiber and improves the protection effect and stability during the optical fiber commutation winding process.

[0048] In this embodiment, the guide angle is set at the connection between the bonding surface 422 and the mounting surface 421. By setting the guide angle, the optical fiber can obtain a smoother guiding path when transitioning from the mounting surface 421 to the bonding surface 422, reducing the sudden angle effect on the optical fiber at the transition position, thereby further improving the smoothness of the optical fiber commutation process.

[0049] In this embodiment, the mounting surface 421 can be fixed to the end face of the cylindrical winding body 1 by means of welding, screwing, riveting, or integral molding. Preferably, after the mounting surface 421 is fixedly connected to the end face of the cylindrical winding body 1, the lap surface 422 is located between the winding rod 41 and the end of the cylindrical winding body 1, so that the optical fiber is first lapped on the lap surface 422 before winding onto the winding rod 41.

[0050] It should be noted that this application is not limited to the L-shaped structure described above. In other embodiments, as long as the cable guard plate 42 can form a mounting portion for installation and a lap portion for fiber optic splicing transition, it is acceptable. For example, the mounting surface 421 and the lap surface 422 may not be perpendicularly connected, but may be connected at an obtuse angle, acute angle, or arc; the lap surface 422 may also be a planar, arc-shaped, or folded structure, as long as the lap surface 422 is located radially outside the circumferential surface of the end of the cylindrical winding body 1, and provides a transition path for the optical fiber to avoid the circumferential surface of the end of the cylindrical winding body 1 during fiber optic reversal.

[0051] Furthermore, in other embodiments, the positional relationship between the guard plate 42 and the winding rod 41 can also be adjusted according to the actual reversing path. As long as the guard plate 42 is located in the vicinity of the winding rod 41 and can make the optical fiber contact the guard plate 42 before winding to the winding rod 41, thereby preventing the optical fiber from directly scraping the end circumferential surface of the cylindrical winding body 1, it should be considered to fall within the protection scope of this application.

[0052] In this embodiment, a tension screening wheel group 5 is also included. The tension screening wheel group 5 is disposed between the tension device 3 and the cylindrical winding body 1. It is used to change the running path of the optical fiber, so that the optical fiber is bent at a large angle, and cooperates with the tension device 3 to screen the optical fiber.

[0053] In this embodiment, "large-angle bend" does not refer to a specific fixed angle value, but rather to a significant change in the fiber's direction of travel at the tension screening wheel group 5, relative to the smooth turning state formed during the conventional guiding process. This results in a more pronounced bending path, where the bend is at least greater than 60°. In other words, when the fiber passes through the tension screening wheel group 5, its path is not simply a smooth passage in a single direction, but rather a continuous bend under the guidance of multiple guide wheels 51, increasing the degree of bending.

[0054] Specifically, in this embodiment, the tension screening wheel group 5 is disposed on the transmission line moving component 2, so that the tension screening wheel group 5 can translate along the axial direction of the cylindrical winding body 1 together with the transmission line moving component 2. With this arrangement, the tension screening wheel group 5 can adjust and screen the optical fiber before it enters the cylindrical winding body 1 while the transmission line moving component 2 pulls the optical fiber, thus keeping the screening position of the tension screening wheel group 5 synchronized with the transmission position of the transmission line moving component 2, which is beneficial to improving the continuity and stability of the optical fiber unwinding process.

[0055] In this embodiment, the tension screening wheel assembly 5 includes three guide wheels 51, which are arranged in an inverted triangle. One guide wheel 51 is located at the bottom, and the other two guide wheels 51 are located at the top. The optical fiber passes through the bottom guide wheel 51, then passes between the two top guide wheels 51, and then around one of the top guide wheels 51, so that the optical fiber passes through the entire tension screening wheel assembly 5 in an S-shaped path. Through the above-mentioned routing path, the optical fiber undergoes multiple changes in direction when passing through the tension screening wheel assembly 5, thereby forming a large degree of bending.

[0056] Since the optical fiber already bears a certain tension under the action of tension device 3, when the optical fiber further passes through tension screening wheel group 5 in an S-shaped path, optical fibers with defects such as damage, microcracks, or insufficient strength are more likely to fail under the combined effect of tension and bending, and thus are more prone to breakage. Therefore, tension screening wheel group 5 can further screen the optical fiber based on the initial tension screening of tension device 3, thereby improving the screening effect and accuracy of defective optical fibers and reducing the number of defective optical fibers entering the subsequent winding process.

[0057] In other embodiments, the number of guide wheels 51 in the tension screening wheel group 5 can be two, four or more, and the multiple guide wheels 51 can be arranged in a triangular, zigzag, sawtooth or other manner that can cause the optical fiber to turn multiple times; as long as the optical fiber running path can be changed, so that the optical fiber produces a more obvious bend and cooperates with the tension device 3 to achieve optical fiber screening, it should fall within the protection scope of this application.

[0058] In this embodiment, the transmission line moving assembly 2 includes a guide rail 21, a moving base 22, and a servo drive unit 23. The guide rail 21 is arranged in a direction parallel to the central axis of the cylindrical winding body 1, the moving base 22 is slidably connected to the guide rail 21, and the servo drive unit 23 is used to drive the moving base 22 to reciprocate along the guide rail 21, thereby driving the optical fiber to move in a direction parallel to the central axis of the cylindrical winding body 1.

[0059] Specifically, the servo drive unit 23 in this embodiment may include a servo motor and a lead screw. The lead screw is rotatably configured, and its axis is parallel to the central axis of the cylindrical winding body 1. The movable seat 22 is connected to the lead screw via a transmission, so that when the servo motor drives the lead screw to rotate, the movable seat 22 can move linearly along the guide rail 21. By using the servo drive unit 23 to drive the movable seat 22, the moving speed, moving direction, and moving position of the movable seat 22 can be precisely controlled, thereby ensuring a stable fit between the transmission line moving assembly 2 and the rotation of the cylindrical winding body 1, and guaranteeing uniform helical winding pitch of the optical fiber on the cylindrical winding body 1.

[0060] In this embodiment, the movable base 22 includes a movable base plate 221 and a mounting frame 222. The movable base plate 221 is slidably connected to the guide rail 21, and the mounting frame 222 is disposed on the movable base plate 221. In this embodiment, a first guide wheel 24 is rotatably connected to the mounting frame 222, and the first guide wheel 24 is located at the end of the mounting frame 222 near the cylindrical winding body 1. After passing through the first guide wheel 24, the optical fiber is guided to the cylindrical winding body 1 and wound onto the cylindrical winding body 1. The tension screening wheel group 5 is disposed at the end of the mounting frame 222 away from the cylindrical winding body 1.

[0061] In this embodiment, the tension device 3 includes a swing arm 31 and a sensor 32. The swing arm 31 is rotatably connected to a rotating shaft 33, allowing it to swing around the shaft 33. A second guide wheel 35 is located at the end of the swing arm 31 furthest from the unwinding wheel 6, and a counterweight 34 is located at the end of the swing arm 31 closest to the unwinding wheel 6. The second guide wheel 35 abuts against the optical fiber. The weight of the end of the swing arm 31 with the counterweight 34 is less than the weight of the end with the second guide wheel 35, thus giving the swing arm 31 a tendency to press the second guide wheel 35 down on the optical fiber in its natural state, thereby applying basic tension to the optical fiber.

[0062] In this embodiment, the unwinding wheel 6 is driven to rotate by a motor. The sensor 32 is used to detect the position of the swing arm 31 and adjust the rotation speed of the motor according to the position of the swing arm 31, thereby adjusting the unwinding speed of the unwinding wheel 6 so that the optical fiber can be tightly wound on the cylindrical winding body 1 and the commutation conductor 4. With the above settings, the tension device 3 can not only provide basic tension for the optical fiber, but also dynamically adjust according to the changes in optical fiber tension to adapt to the different tension requirements of the optical fiber during normal helical winding and end commutation winding.

[0063] Specifically, in this embodiment, the basic tension applied to the optical fiber by the tensioning device 3 can be adjusted by replacing the counterweights 34 with different weights. The greater the weight of the counterweight 34 or the smaller the torque difference between one side of the second guide wheel 35 and the other side of the counterweight 34, the less the pressure exerted by the second guide wheel 35 on the optical fiber; conversely, the smaller the weight of the counterweight 34 or the greater the relative torque on one side of the second guide wheel 35, the greater the pressure exerted by the second guide wheel 35 on the optical fiber. Therefore, a suitable counterweight 34 can be selected according to different specifications of optical fiber or different winding conditions to obtain the required basic tension.

[0064] In this embodiment, sensor 32 is preferably a distance sensor 32, which is used to detect the distance between the end of the pendulum 31 on which the counterweight 34 is located and the sensor 32. As the fiber tension changes, the pendulum 31 swings around the axis 33, thereby causing the position of the end of the counterweight 34 relative to the sensor 32 to change. Thus, the sensor 32 can convert this distance change into a position status signal of the pendulum 31, and control the rotation speed of the unwinding wheel 6 motor accordingly.

[0065] During the specific control process, when the distance between one end of the counterweight 34 and the sensor 32 is detected to be small, it indicates that the swing amplitude of the swing arm 31 is large and the pressure of the second guide wheel 35 on the optical fiber is large. At this time, the optical fiber tension can be considered relatively insufficient. To increase the optical fiber tension, the motor of the unwinding wheel 6 can be decelerated, thereby reducing the rotation speed of the unwinding wheel 6 and reducing the amount of unwinding per unit time, so that the optical fiber is re-tightened under the drive of the cylindrical winding body 1. Theoretically, the optical fiber tension can also be increased by increasing the rotation speed of the cylindrical winding body 1. However, since the rotation speed of the cylindrical winding body 1 also needs to be matched with the movement speed of the transmission line moving component 2, if the rotation speed of the cylindrical winding body 1 changes too much, it may affect the stability of the optical fiber spiral winding pitch. Therefore, in this embodiment, tension adjustment is preferably achieved by adjusting the rotation speed of the unwinding wheel 6.

[0066] When a large distance is detected between one end of the counterweight 34 and the sensor 32, it indicates that the swing arm 31 has swung upwards, and the downward pressure of the second guide wheel 35 on the optical fiber has decreased. At this time, the optical fiber tension can be considered relatively high. To reduce the optical fiber tension, the motor of the unwinding wheel 6 can be accelerated, thereby increasing the rotation speed of the unwinding wheel 6 and increasing the unwinding amount per unit time, so that the optical fiber tension falls back to the predetermined range. Thus, the optical fiber can maintain a relatively stable tension state when wound on the cylindrical winding body 1.

[0067] In this embodiment, when the optical fiber is wound to the end of the cylindrical winding body 1 and is ready to be wound onto the reversing conductor section 4, the tension control strategy can differ from that in the normal winding stage. Specifically, when the transmission line moving component 2 moves to the predetermined reversing position, the control system can adjust the control threshold corresponding to the sensor 32 based on the signal indicating that the transmission line moving component 2 is in position, the number of rotations of the cylindrical winding body 1, or other reversing trigger signals, allowing the swing arm 31 to generate a larger downward swing amplitude. In other words, during the reversing winding stage, the end of the swing arm 31 with the counterweight 34 is allowed to move closer to the sensor 32, allowing the second guide wheel 35 to apply greater downward pressure to the optical fiber, so that the optical fiber is wound more tightly onto the reversing conductor section 4. At the same time, the unwinding wheel 6 motor can continue to feed the fiber at a preset speed or decelerate the feeding speed according to the actual reversing requirements, thereby forming a tighter and more stable winding state of the optical fiber at the reversing conductor section 4, providing reliable starting conditions for subsequent reverse winding.

[0068] When the optical fiber completes its winding on the commutation conductor section 4 and is ready to begin reverse winding, the unwinding wheel 6 motor can briefly rotate in the reverse direction, causing the swing arm 31 to return to the preset initial working position or predetermined position range, thus completing the reset of the swing arm 31. After the swing arm 31 is reset, the next round of normal tension control process begins, coordinating with the reverse movement of the transmission line moving assembly 2 and the reverse rotation of the cylindrical winding body 1 to achieve reverse spiral winding of the optical fiber. Therefore, the tension device 3 can maintain relatively stable tension during the normal winding stage and, in conjunction with the commutation conductor section 4, achieve tighter winding control during the commutation stage, thereby improving the continuity and stability of the entire fiber unwinding process.

[0069] It should be noted that this application is not limited to the method of using distance sensor 32 as described above. In other embodiments, sensor 32 may also be an angle sensor 32, a rotary encoder, a proximity sensor 32, a displacement sensor 32, or other detection elements capable of reflecting the swing state of the swing arm 31. As long as the rotation speed of the unwinding wheel 6 motor can be adjusted by detecting the position state, swing angle, or relative displacement of the swing arm 31, dynamic control of the fiber tension can be achieved.

[0070] Furthermore, the tension device 3 in this application is not limited to the counterweight structure of the aforementioned pendulum 31. In other embodiments, the tension device 3 may also employ a spring-loaded tension mechanism, a cylinder-loaded tension mechanism, a servo-driven active tension control mechanism, a magnetic powder braking tension mechanism, or other existing tension control devices. As long as the tension device 3 can apply tension to the optical fiber and, in conjunction with unwinding control, tightly wind the optical fiber onto the cylindrical winding body 1 and the commutation conductor portion 4, the technical objective of this application can be achieved.

[0071] In this embodiment, the cylindrical winding body 1 includes two circular end plates 11, which are connected to a rotating shaft 12. The central axis of the rotating shaft 12 passes through the center of the two circular end plates 11. A plurality of circular rods 13 are arranged between the two circular end plates 11, and all the circular rods 13 are arranged around the central axis of the rotating shaft 12, thus forming a cylindrical outer contour for winding optical fibers. A drive motor is connected to the rotating shaft 12 to drive the rotating shaft 12 to rotate, thereby causing the two circular end plates 11 to rotate synchronously, and causing the plurality of circular rods 13 arranged between the two circular end plates 11 to rotate together around the rotating shaft 12, thereby realizing the overall rotation of the cylindrical winding body 1.

[0072] In this embodiment, the circular end plate 11 has several mounting holes 111. The two ends of each round rod 13 are fixed to the two circular end plates 11 by bolts that engage with the corresponding mounting holes 111. Preferably, viewed from the end view, each round rod 13 is evenly distributed around the central axis of the rotation shaft 12, and the circumcircle formed by each round rod 13 is tangent to the corresponding inner circle of the rotation shaft 12. In other words, the inner contour of the round rod 13 is tangent to the outer contour of the rotation shaft 12 in the radial direction. By adopting the above structure, multiple round rods 13 can form a relatively regular cylindrical winding space between the two circular end plates 11, allowing the optical fiber to be wound around the outside of the multiple round rods 13.

[0073] In this embodiment, the cylindrical winding body 1 adopts a hollow structure formed by combining an end plate and a round rod 13. On the one hand, this can form a cylindrical outer contour for spiral winding of optical fibers, and on the other hand, it facilitates subsequent adjustment of the installation position of the round rod 13, thereby changing the winding diameter of the cylindrical winding body 1. Furthermore, compared with a solid cylindrical structure, the combination of the end plate and the round rod 13 can reduce the overall weight of the cylindrical winding body 1 and reduce the moment of inertia while meeting the winding requirements, which is beneficial for the start-stop and forward / reverse control of the cylindrical winding body 1.

[0074] In other embodiments, the circular end plate 11 may have multiple rings of mounting holes 111, with each ring of mounting holes 111 concentrically distributed around the rotation axis 12. By selectively mounting the circular rod 13 at different positions of the mounting holes 111, the distance between the circular rod 13 and the rotation axis 12 can be changed, thereby adjusting the outer circumferential winding diameter of the cylindrical winding body 1. Thus, the winding length of a single ring of optical fiber can be adjusted according to different requirements for fiber unwinding length, winding pitch, or fiber take-up, improving the applicability and adjustment flexibility of the device.

[0075] like Figure 4In another embodiment, multiple sliding grooves may be formed on the circular end plate 11. These grooves extend radially along the circular end plate 11 and are equidistantly arranged around the rotation shaft 12. Each circular rod 13 corresponds to one sliding groove, and each rod 13 has a slider at its end. The slider slides within the corresponding sliding groove, allowing the rod 13 to move radially along the extension direction of the groove. By adjusting the position of each rod 13 within the sliding groove, the distance between each rod 13 and the rotation shaft 12 can be changed simultaneously, thereby adjusting the winding diameter of the cylindrical winding body 1. After the position of the rod 13 is adjusted, it can be fixed in a preset position by clamping, bolting, or other limiting and fixing structures.

[0076] It should be noted that in the embodiments described above, where the position of the circular rod 13 is adjusted using multiple mounting holes 111 or sliding grooves, since the peripheral area of ​​the circular end plate 11 may have the edges of the mounting holes 111, the edges of the sliding groove openings, or local processing transitions, an annular pad can be provided on the circumferential surface or outer periphery of the circular end plate 11 to prevent the optical fiber from being scratched by direct contact with the end edge of the circular end plate 11 during winding. In this way, when the optical fiber winds through the end area of ​​the columnar winding body 1, it can preferentially adhere to the surface of the annular pad before winding around the corresponding outer side of the circular rod 13, thereby reducing the risk of the edge of the circular end plate 11 scratching the optical fiber and improving the protective effect during the optical fiber winding process.

[0077] In addition, in other embodiments, the cylindrical winding body 1 can also be directly adopted as a cylindrical structure. The cylindrical body can be an integral cylindrical tube or a hollow cylinder. As long as its outer circumference can form a cylindrical surface for the optical fiber to be spirally wound, and can cooperate with the transmission line moving component 2 and the reversing conductor part 4 to realize the forward and reverse reciprocating winding of the optical fiber, it can be used as the cylindrical winding body 1 in this application.

[0078] The implementation principle of this application embodiment is as follows: This application makes the optical fiber reciprocate spirally wound on the cylindrical winding body 1, and uses the circumferential space and axial space of the cylindrical winding body 1 to realize the optical fiber winding. Compared with the scheme of using a large diameter winding component to achieve the target length in a single turn or a few turns, it does not need to significantly increase the size of the winding component as the target unwinding length increases, thereby effectively reducing the space occupied by the equipment.

[0079] This application also provides an optical fiber fabrication process.

[0080] An optical fiber unwinding process employs the cylindrical reversible winding optical fiber unwinding device described in the above embodiments. This unwinding process is controlled and executed by a control unit, preferably a PLC. The entire operation can be divided into four stages: the starting point rotation stage, the common forward stage, the ending point rotation stage, and the common return stage. After completing the common return stage, the program automatically enters the next cycle until the set number of rotations is reached or a stop command is received.

[0081] Specifically, the process includes the following steps: S1. Release the optical fiber from the unwinding reel 6.

[0082] After being released from the unwinding reel 6, the optical fiber passes sequentially through the tension device 3, the tension screening wheel group 5, and the transmission line moving assembly 2, and is finally guided to the cylindrical winding body 1. The tension device 3 is used to maintain the optical fiber at a preset tension, and the tension screening wheel group 5 is used to bend and screen the optical fiber.

[0083] S2. The control line moving component 2 pulls the optical fiber to move in a direction parallel to the axis of the cylindrical winding body 1, while controlling the cylindrical winding body 1 to rotate, so that the optical fiber is spirally wound on the cylindrical winding body 1 in the first direction.

[0084] This step corresponds to the common forward phase of the PLC. In this phase, the cylindrical winding body 1 rotates continuously as the active actuator, and the transmission line moving assembly 2 moves synchronously along the axial direction of the cylindrical winding body 1 under the control of the PLC, thereby forming a helical winding trajectory in the first direction on the outer periphery of the cylindrical winding body 1.

[0085] In this embodiment, the rotational speed of the cylindrical winding body 1 is matched with the moving speed of the transmission line moving assembly 2. The PLC calculates the operating speed of the transmission line moving assembly 2 during the common forward phase based on the set number of winding turns, the rotational speed of the cylindrical winding body 1, and the effective stroke of the transmission line moving assembly 2, so as to ensure that the helical pitch of the optical fiber on the cylindrical winding body 1 meets the preset requirements.

[0086] The velocity relationship between the two is determined by the following formula: a1=x1n, t=a1 / v1, v0=a0 / t Wherein, a1 is the total number of pulses rotating the cylindrical winding body 1, obtained by multiplying the number of pulses per revolution x1 by the set number of winding turns n. The value of x1 is constant, and in this application, x1 is set to 20000. t is the effective operating time of the cylindrical winding body 1 and the wire conveying device, obtained by dividing the total number of pulses a1 of the cylindrical winding body 1 rotation by the set speed v1 of the take-up wheel. v0 is the operating speed of the wire conveying device, obtained by dividing the effective operating distance a0 of the wire conveying device by the common effective operating time t. The value of a0 is constant at 2600 in this embodiment of the application.

[0087] S3. After the optical fiber is wound to the end of the adjacent cylindrical winding body 1, the optical fiber is guided and transitioned through the commutation conductor part 4.

[0088] This step corresponds to the end-point or start-point rotation stage of the PLC. In this embodiment, both the start-point and end-point rotation stages can be further divided into several sub-processes to ensure that the cylindrical winding body 1 and the transmission line moving assembly 2 move sequentially, thereby ensuring that the optical fiber can smoothly transition when passing through the reversing position, while avoiding motion interference between components.

[0089] The specific reversal process is as follows: when the cylindrical winding body 1 rotates to the set speed, the cylindrical winding body 1 stops rotating, and at the same time, the transmission line moving device stops moving. Then, the transmission line moving device quickly moves laterally in the forward direction, so that it passes the end of the cylindrical winding body 1. At this time, the optical fiber segment between the transmission line moving device and the cylindrical winding body 1 is located above the winding column. Next, continue to rotate the cylindrical winding body 1 in the same direction so that the winding post hooks the optical fiber. Then, the transmission line moving device moves laterally in the opposite direction (the specific lateral movement distance is determined according to the optical fiber arrangement requirements). Then, the cylindrical winding body 1 rotates in the opposite direction to reset the winding post (the reset position is the position of the winding post when the cylindrical winding body 1 stops after winding in the same direction). Then, control the unwinding wheel 6 to reverse and readjust the fiber tension to prepare for switching from the current spiral winding direction to the opposite spiral winding direction.

[0090] S4. Control the transmission line moving component 2 to move in the reverse direction, and at the same time control the cylindrical winding body 1 to rotate in the reverse direction, so that the optical fiber is spirally wound on the cylindrical winding body 1 in the second direction, and control the position of the optical fiber roll formed by spiral winding in the second direction relative to the optical fiber roll formed by spiral winding in the first direction.

[0091] This step corresponds to the common return phase of the PLC. After the reversal is completed, the cylindrical winding body 1 rotates in the opposite direction, and the transmission line moving assembly 2 moves back in the opposite direction, so that the optical fiber continues to be spirally wound on the cylindrical winding body 1 in the second direction.

[0092] In this embodiment, the moving speed of the transmission line moving component 2 during the common return phase controlled by the PLC corresponds to the reverse rotation speed of the cylindrical winding body 1, so that the optical fiber rolls formed by the second-direction spiral winding and the optical fiber rolls formed by the first-direction spiral winding are arranged at a preset pitch, preferably arranged side by side. Thus, the optical fiber rolls formed by the forward winding and the reverse winding form a neatly arranged reciprocating spiral structure on the outer periphery of the cylindrical winding body 1.

[0093] The specific arrangement of the optical fiber rolls in this embodiment is as follows: the optical fiber rolls formed by spiral winding along the second direction and the optical fiber rolls formed by spiral winding along the first direction are spaced apart, so that the optical fiber rolls formed by spiral winding along the first direction and the optical fiber rolls formed by spiral winding along the second direction are arranged independently.

[0094] That is, when the cylindrical winding body 1 rotates in the forward direction and moves forward in coordination with the transmission line moving component 2, a first fiber optic roll is formed; when the cylindrical winding body 1 rotates in the reverse direction and moves back in coordination with the transmission line moving component 2, a second fiber optic roll is formed. The first fiber optic roll and the second fiber optic roll are set separately from each other on the outer periphery of the cylindrical winding body 1, rather than being set side by side and adjacent to each other.

[0095] The specific arrangement of the parallel windings can be determined by the amount of reverse lateral movement of the transmission line moving device after the optical fiber has been wound. For example, the current fiber spiral winding stage can be determined by recording the number of forward rotations u1 and the number of reverse rotations u2, and then dividing by the number of rotations m required to complete one fiber spiral winding. When u1=0 and u2=0 and the motor of the cylindrical winding body 1 starts, the moving plate is at the current positions x1 and x2 on the guide rail 21. At the same time, the diameter d of the optical fiber is recorded. If u1=n, it means that this is the n / mth fiber spiral winding stage. If the fiber is wound in the forward direction, the moving plate should move x1+nd / m when the fiber begins to be wound in the forward direction next time, so that the first fiber can be set up side by side. If u2=n, it means that this is the n / mth reverse winding of the fiber. When the fiber begins to be wound in the reverse direction next time, the moving plate should move x2+nd / m, so that the first fiber can be set up side by side, and the second fiber can continue to be set up side by side. The fiber rolls formed by forward winding and the fiber rolls formed by reverse winding are kept independent, which makes it easy to fix, cut and remove the two fibers separately in the future.

[0096] S5. Repeat steps S2 to S4 to make the optical fiber reciprocate on the cylindrical winding body 1.

[0097] The PLC operates in a cyclical manner, following the sequence of "starting point rotation phase – common forward phase – ending point rotation phase – common return phase," until the preset number of rotations is reached. If, during operation, an optical fiber is detected to have broken due to a quality issue and failing the tension screening, the PLC control device will automatically stop the machine and issue an alarm.

[0098] S6. After the optical fiber has completed reciprocating winding, the optical fiber wound on the cylindrical winding body 1 is fixed, and the optical fiber at the commutation conductor part 4 is cut to remove the optical fiber from the cylindrical winding body 1.

[0099] In this embodiment, after the winding is completed, adhesive can be applied to the outer periphery of the cylindrical winding body 1 to keep adjacent optical fibers fixed and prevent them from scattering during subsequent wire removal. After fixing, different cutting and wire removal methods are selected according to the target product form.

[0100] There are two specific cutting methods, which are determined according to the length requirements of the optical fiber; The first method is as follows: Cut the optical fiber at the commutation conductor section 4 at one end of the cylindrical winding body 1, and spirally remove the optical fiber from the cylindrical winding body 1 along the first or second direction. After the optical fiber passes through the commutation conductor section 4 at the other end, spirally remove the remaining optical fiber from the cylindrical winding body 1 along the second or first direction. For example, when you need to obtain 100 optical fibers arranged in a 10-meter length, you can wind 5 meters of optical fiber along the first direction, and after passing through the commutation conductor section 4, wind 5 meters of optical fiber along the second direction. After 100 reciprocating cycles, apply adhesive to the optical fiber on the cylindrical winding body 1. After the adhesive solidifies, cut the optical fiber on the commutation conductor section 4 at one end of the cylindrical winding body 1, and then spirally remove all 100 optical fibers as a whole along the second direction (removing 5 meters at this time), and then spirally remove the remaining 100 optical fibers along the first direction to obtain a 10-meter-long optical fiber with 100 fibers arranged in a 100-fiber configuration.

[0101] The second method involves cutting the optical fibers at the commutation conductor sections 4 at both ends of the cylindrical winding body 1. First, the first optical fiber segment is spirally removed from the cylindrical winding body 1 along either the first or second direction. Then, the second optical fiber segment is spirally removed from the cylindrical winding body 1 along the second direction. For example, to obtain a 5-meter-long optical fiber with 200 strands, a 5-meter-long optical fiber can be wound along the first direction, passing through the commutation conductor section 4, and then wound along the second direction for another 5 meters. After 100 reciprocating cycles, adhesive is applied to the optical fiber on the cylindrical winding body 1. Once the adhesive has solidified, the optical fibers on the commutation conductor sections 4 at both ends of the cylindrical winding body 1 are cut. Then, the first 100 optical fibers are spirally removed along the first direction, followed by the second 100 optical fibers, and finally, the two sections are combined and fixed together to obtain a 5-meter-long optical fiber with 200 strands.

[0102] It should be noted that the total length of the optical fiber extracted in this way is usually slightly longer than the target length. This is because the extracted optical fiber usually needs to be trimmed and aligned in subsequent processes. Therefore, during actual winding, it is preferable to make the fiber winding length slightly longer than the target finished length in order to leave room for subsequent alignment and trimming.

[0103] Therefore, the first fiber acquisition method is more suitable for obtaining a longer continuous optical fiber; the second fiber acquisition method is more suitable for obtaining two optical fiber segments separately and then combining them in the subsequent process, thereby meeting the product manufacturing requirements of a larger number of fiber segments.

[0104] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A cylindrical commutation-wound optical fiber unwinding device, characterized in that: It includes a cylindrical winding body (1), a wire conveying moving assembly (2), and a tensioning device (3); The optical fiber can be released from the unwinding wheel (6) and wound onto the cylindrical winding body (1) after passing through the tension device (3) and the transmission line moving assembly (2); The transmission line moving assembly (2) is used to pull the optical fiber to move along the axial direction parallel to the columnar winding body (1). The columnar winding body (1) can rotate to cooperate with the transmission line moving assembly (2) to make the optical fiber spirally wound on the columnar winding body (1). The end of the cylindrical winding body (1) is provided with a reversing conductor part (4). The reversing conductor part (4) is used to guide the optical fiber when the optical fiber is wound to the end of the cylindrical winding body (1) so as to cooperate with the reverse movement of the transmission line moving assembly (2) and the reverse rotation of the cylindrical winding body (1) so that the optical fiber is wound in a reverse spiral on the cylindrical winding body (1). The tension device (3) is used to apply tension to the optical fiber so that the optical fiber is tightly wound on the cylindrical winding body (1).

2. The cylindrical commutation-winding optical fiber unwinding device according to claim 1, characterized in that: The reversing conductor section (4) includes two winding rods (41), each of which is disposed at one end of the cylindrical winding body (1). The extension direction of the winding rods (41) is away from the central axis of the cylindrical winding body (1), and the end of the winding rod (41) away from the cylindrical winding body (1) is disposed toward the wire conveying moving assembly (2). The two winding rods (41) are disposed opposite to each other.

3. The cylindrical commutation-winding optical fiber unwinding device according to claim 2, characterized in that: The end of the cylindrical winding body (1) is provided with a wire guard plate (42). The wire guard plate (42) is located near the winding rod (41). The wire guard plate (42) includes a mounting surface (421) and a wire-connecting surface (422). The mounting surface (421) is fixed to the end face of the cylindrical winding body (1). The wire-connecting surface (422) is located away from the central axis of the cylindrical winding body (1) relative to the outer peripheral surface of the cylindrical winding body (1). The wire-connecting surface (422) and the mounting surface (421) are connected by a chamfer transition.

4. The cylindrical commutation-winding optical fiber unwinding device according to claim 1, characterized in that: It also includes a tension screening wheel set (5), which is disposed between the tension device (3) and the cylindrical winding body (1). The tension screening wheel set (5) is used to change the running path of the optical fiber, so that the optical fiber is bent at a large angle, so as to cooperate with the tension device (3) to screen the optical fiber.

5. The cylindrical commutation-winding optical fiber unwinding device according to claim 1, characterized in that: The transmission line moving assembly (2) includes a guide rail (21), on which a moving seat (22) is slidably disposed. The moving seat (22) is driven by a servo drive unit (23). The moving direction of the moving seat (22) is parallel to the central axis of the cylindrical winding body (1). A first guide wheel (24) is disposed on the moving seat (22). After passing through the first guide wheel (24), the optical fiber is wound around the cylindrical winding body (1).

6. The cylindrical commutation-winding optical fiber unwinding device according to claim 1, characterized in that: The tension device (3) includes a swing arm (31) and a sensor (32). The swing arm (31) is rotatably connected to a rotating shaft (33). The swing arm (31) can swing around the rotating shaft (33). A second guide wheel (35) is provided at the end of the swing arm (31) away from the unwinding wheel (6). A counterweight (34) is provided at the end of the swing arm (31) close to the unwinding wheel (6). The second guide wheel (35) abuts against the optical fiber. The weight of the end of the swing arm (31) with the counterweight (34) is less than the weight of the end with the second guide wheel (35). The unwinding wheel (6) is driven to rotate by a motor. The sensor (32) is used to detect the position of the swing arm (31) to adjust the rotation speed of the motor so that the optical fiber can be tightly wound on the columnar winding body (1) and the reversing conductor (4).

7. The cylindrical commutation-winding optical fiber unwinding device according to claim 1, characterized in that: The cylindrical winding body (1) includes two circular end plates (11), which are connected to a rotating shaft (12). The central axis of the rotating shaft (12) passes through the center of the circular end plate (11), and a number of round rods (13) are arranged between the two circular end plates (11). All the round rods (13) are arranged around the central axis of the rotating shaft (12).

8. An optical fiber casting process, characterized in that: The cylindrical reversing winding optical fiber unwinding device according to any one of claims 1-7 includes the following steps: S1. Release the optical fiber from the unwinding reel (6); S2. The control line moving component (2) pulls the optical fiber to move in a direction parallel to the axis of the columnar winding body (1), and at the same time controls the columnar winding body (1) to rotate, so that the optical fiber is spirally wound on the columnar winding body (1) in the first direction. S3. After the optical fiber is wound to the end of the adjacent cylindrical winding body (1), the optical fiber is guided through the commutation conductor (4) for transition. S4. Control the transmission line moving component (2) to move in the opposite direction, and at the same time control the columnar winding body (1) to rotate in the opposite direction, so that the optical fiber is spirally wound on the columnar winding body (1) in the second direction, and control the position of the optical fiber roll formed by spiral winding in the second direction relative to the optical fiber roll formed by spiral winding in the first direction, and the optical fibers of the optical fiber roll formed by spiral winding in the first direction and the optical fiber roll formed by spiral winding in the second direction are arranged side by side. S5. Repeat steps S2 to S4 to make the optical fiber reciprocate on the cylindrical winding body (1); S6. After the optical fiber has completed reciprocating winding, the optical fiber wound on the cylindrical winding body (1) is fixed and the optical fiber at the reversing conductor part (4) is cut to remove the optical fiber from the cylindrical winding body (1).

9. The optical fiber casting process according to claim 8, characterized in that: In step S4, the fiber rolls formed by spiral winding along the second direction and the fiber rolls formed by spiral winding along the first direction are spaced apart, so that the fiber rolls formed by spiral winding along the first direction and the fiber rolls formed by spiral winding along the second direction are arranged independently.

10. The optical fiber casting process according to claim 8, characterized in that: In step S6, the optical fiber at the reversing conductor section (4) at one end of the cylindrical winding body (1) is cut off, and the optical fiber is spirally removed from the cylindrical winding body (1) along the first direction or the second direction. After the optical fiber passes the reversing conductor section (4) at the other end, the remaining optical fiber is spirally removed from the cylindrical winding body (1) along the second direction or the first direction.

Images