A method and system for zero whipping in high-speed fiber drawing with disk changing

Abstract

The application belongs to the technical field of optical fiber drawing and take-up, and particularly relates to a method and system for zero whipping of high-speed optical fiber drawing and disc changing, wherein the method for zero whipping of high-speed optical fiber drawing and disc changing comprises adjusting the line speeds of a full disc and an empty disc to be consistent, detecting the angle between a full disc optical fiber clamp and a first cutter and the angle between an empty disc optical fiber clamp and a second cutter during the process, and issuing a stop lever retreat instruction when the angle between the full disc optical fiber clamp and the first cutter is in a first angle interval and the angle between the empty disc optical fiber clamp and the second cutter is in a second angle interval. The full disc optical fiber clamp is first caused to clamp the optical fiber, and then the empty disc optical fiber clamp is caused to clamp the optical fiber and cut it, so that the outer end of the optical fiber on the surface of the full disc has been stably clamped by the full disc optical fiber clamp at the moment of cutting the optical fiber, thereby avoiding whipping of the tail end of the optical fiber on the surface of the high-speed rotating full disc.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of optical fiber drawing and take-up, and particularly relates to a method and system for high-speed optical fiber drawing and disc changing without whipping. BACKGROUND

[0002] With the continuous updating and iteration of optical fiber industry technology, the size of optical rods continues to increase, the drawing speed has been increased from several hundred meters per minute in the early stage to more than 2500 meters per minute, and the continuous drawing length of an optical rod has been increased from tens of kilometers to thousands of kilometers or even tens of thousands of kilometers. The current drawing take-up disc has a length of several hundred kilometers to 1000 kilometers.

[0003] In order to reduce production costs and downtime, the drawing production line generally adopts an online disc changing mode. The existing drawing take-up machine is generally provided with two take-up hubs, and each take-up hub is provided with an empty disc. In the low-speed stage of drawing start, the optical fiber is adhered to an empty disc by a tape for speed-up take-up. When the predetermined take-up length needs to be changed, an operator triggers the disc changing program. The existing typical disc changing process includes the following steps:

[0004] 1) adjusting the positions of the empty disc and the full disc; 2) driving the empty disc to follow the take-up disc at a high speed, so that the speeds of the two take-up discs are the same; 3) pushing out the stop lever, moving the stop lever support out of the way, so that the optical fiber crosses the stop lever; 4) adjusting the disc changing arm to a set position; 5) retracting the stop lever support; 6) detecting the angle of the empty disc servo motor feedback by the PLC, and judging whether the angle between the empty disc optical fiber clamp and the cutter reaches the set angle; 7) retracting the stop lever, pushing the optical fiber into the empty disc optical fiber clamp, and cutting the optical fiber by the cutter in the rotating process, so that the inner end of the optical fiber is clamped by the empty disc optical fiber clamp and continues to be taken up on the empty disc; and 8) applying the brake to the full disc to quickly stop, removing the full disc and installing a new empty disc.

[0005] In the above existing scheme, when the optical fiber is cut, the inner end of the optical fiber is clamped by the empty disc optical fiber clamp and continues to be taken up, while the outer end of the optical fiber is still located on the surface of the full disc. Since the full disc is still in a high-speed rotating state at the moment of disc changing, the outer end of the optical fiber is violently shaken on the surface of the full disc, forming a whipping phenomenon, which often causes the optical fiber on the surface of the full disc to be damaged and scrapped, with a length of several kilometers, dozens of kilometers or even hundreds of kilometers, resulting in obvious losses.

[0006] Some manufacturers try to set a circular protective shell on the outer cover of the disc to reduce the whipping degree or the damage caused by whipping, but this measure can only reduce the loss caused by whipping to a certain extent and cannot eliminate the problem of free whipping of the tail end of the optical fiber on the surface of the full disc from the root, and the whipping phenomenon still exists. The industry generally regards it as a common problem and technical difficulty in the process of high-speed optical fiber drawing and disc changing.

[0007] Therefore, it is necessary to improve the disc changing sequence and control logic on the basis of the existing online disc changing, so that the outer end of the fiber on the full disc surface is in a reliable clamping state at the moment of fiber cutting, thereby avoiding whipping, eliminating scrap, and improving the stability and yield of high-speed wire drawing disc changing. SUMMARY

[0008] In view of the problem that the tail end of the fiber on the full disc is in a free state at the moment of fiber cutting during the existing high-speed fiber drawing online disc changing, thereby whipping on the surface of the high-speed rotating full disc and causing the outer end of the finished disc fiber to be scrapped, the present application proposes a zero-whipping method and system for high-speed fiber drawing disc changing, which adjusts the clamping sequence and angle control conditions of the fiber during disc changing, so that the full disc fiber is clamped on the outer end of the fiber before cutting, thereby eliminating the whipping phenomenon.

[0009] To solve the above technical problems, the present application provides the following technical scheme: a zero-whipping method for high-speed fiber drawing disc changing, comprising,

[0010] S1, during the fiber drawing take-up process, adjusting the full disc provided on the first take-up hub and the empty disc provided on the second take-up hub to a predetermined disc changing position, and driving the rotation speed of the empty disc by the empty disc servo motor to quickly follow the line speed of the full disc take-up disc, so that the line speeds of the two take-up discs are the same;

[0011] S2, in the state that the line speed of the full disc and the line speed of the empty disc are the same, based on the angle feedback of the full disc servo motor and the empty disc servo motor, detecting the angle between the full disc fiber clamp and the first cutter and the angle between the empty disc fiber clamp and the second cutter by the PLC controller, and issuing a stop lever retreat instruction when the angle between the full disc fiber clamp and the first cutter is in the first angle interval and the angle between the empty disc fiber clamp and the second cutter is in the second angle interval;

[0012] S3, in response to the stop lever retreat instruction, controlling the stop lever to retreat, and first pushing the drawing fiber into the full disc fiber clamp, then pushing it into the empty disc fiber clamp, and in turn cutting the drawing fiber by the first cutter and the second cutter as the two fiber clamps rotate with the respective take-up discs, so that the outer end of the fiber is clamped by the full disc fiber clamp and the inner end of the fiber is clamped by the empty disc fiber clamp and continues to be taken up on the empty disc;

[0013] S4, after the fiber is cut and the empty disc starts to take up, applying the brake to the full disc to make it stop quickly, and after the full disc stops, removing the full disc and reinstalling the empty disc for the next disc changing.

[0014] In a preferred embodiment, the PLC controller issues the stop lever retreat instruction when it is detected that the first angle interval between the full disc fiber clamp and the first cutter is 45° and the second angle interval between the empty disc fiber clamp and the second cutter is between 50° and 90°.

[0015] wherein, in a preferred embodiment, the full tray fiber holder holds the fiber at the outer end while the outer end of the fiber is below the first cutter and the fiber is not in contact with the first cutter, and then the empty tray fiber holder holds the inner end of the fiber and cuts the fiber with the first cutter during rotation.

[0016] wherein, in a preferred embodiment, the fiber is in the path of movement of the full tray fiber holder and the empty tray fiber holder when the stopper is retracted.

[0017] wherein, in a preferred embodiment, the fiber between the full tray fiber holder and the stopper is below the first cutter after the full tray fiber holder holds the fiber;

[0018] the fiber between the empty tray fiber holder and the stopper is above the second cutter after the empty tray fiber holder holds the fiber.

[0019] The application also provides a device based on the foregoing method for high-speed fiber drawing and disc changing without whipping, comprising a take-up machine main body, a first take-up hub and a second take-up hub are arranged on the take-up machine main body, a full tray take-up disc is loaded on the first take-up hub, and an empty tray take-up disc is loaded on the second take-up hub;

[0020] a fiber holder assembly, the fiber holder assembly comprising a full tray fiber holder arranged on the first take-up hub and an empty tray fiber holder arranged on the second take-up hub;

[0021] a stopper assembly, the stopper assembly comprising a stopper and a stopper support, a moving slot is arranged on the stopper support, and the stopper is arranged in the moving slot, the stopper assembly being arranged between the full tray take-up disc and the empty tray take-up disc;

[0022] a cutter assembly, the cutter assembly comprising a first cutter and a second cutter arranged on both sides of the stopper support.

[0023] wherein, in a preferred embodiment, the device further comprises a full tray servo motor, the full tray servo motor being connected with the first take-up hub and being used to drive the full tray take-up disc to rotate and output an angle feedback signal;

[0024] an empty tray servo motor, the empty tray servo motor being connected with the second take-up hub and being used to drive the empty tray take-up disc to rotate and output an angle feedback signal;

[0025] a brake assembly, the brake assembly being connected with the first take-up hub and the second take-up hub and being used to apply a brake to the full tray after disc changing is completed.

[0026] wherein, in a preferred embodiment, the device further comprises a disc changing swing arm assembly, the disc changing swing arm assembly comprising a transverse moving support rod, a longitudinal moving support rod, and a guide wheel arranged on the longitudinal moving support rod, the longitudinal moving support rod being capable of moving transversely relative to the transverse moving support rod, and the guide wheel being capable of moving longitudinally relative to the longitudinal moving support rod.

[0027] In a preferred embodiment, the PLC controller is electrically connected to the full-disk servo motor, the empty-disk servo motor, the stop lever assembly, the disk-changing swing arm assembly, and the brake assembly, and controls the stop lever retraction and the brake action according to the angle feedback of the full-disk servo motor and the empty-disk servo motor.

[0028] In a preferred embodiment, the PLC controller is electrically connected to the full-disk servo motor, the empty-disk servo motor, the stop lever assembly, the disk-changing swing arm assembly, and the brake assembly, and controls the stop lever retraction and the brake action according to the angle feedback of the full-disk servo motor and the empty-disk servo motor.

[0029] The present application has the following advantages: the present application changes the order of clamping the optical fiber during disk changing from "clamping the empty-disk first and then cutting" to "clamping the outer end of the optical fiber on the full-disk first and then clamping the inner end of the optical fiber on the empty-disk and cutting", so that the outer end of the optical fiber on the full-disk is stably clamped by the full-disk optical fiber clamp at the moment of cutting the optical fiber, and the whipping phenomenon of the tail end of the optical fiber on the surface of the high-speed rotating full-disk is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0030] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed in the embodiment description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor. Among them:

[0031] Figure 1 It is a schematic diagram of the overall three-dimensional structure in the present application;

[0032] Figure 2 It is a schematic diagram of the structure of the first cutting knife and the second cutting knife in the present application;

[0033] Figure 3 It is a schematic diagram of the overall top view structure of the present application;

[0034] Figure 4 It is a schematic diagram of the structure of moving to the disk-changing position in the present application;

[0035] Figure 5 It is a schematic diagram of the structure of the stop lever retraction in the present application;

[0036] Figure 6 It is a schematic diagram of the condition state of the stop lever retraction in the present application.

[0037] 100, take-up machine main body; 101, first take-up hub; 201, full-disk fiber clamp; 102, second take-up hub; 202, empty-disk fiber clamp; 302, stop lever support; 301, stop lever; 303, moving notch; 103, full-disk take-up reel; 104, empty-disk take-up reel; 401, first cutter; 402, second cutter; 501, transverse movement support rod; 502, longitudinal movement support rod; 600, dancing wheel; 503, guide wheel. DETAILED DESCRIPTION

[0038] In order to make the above objectives, features and advantages of the present application more obvious and easy to understand, the specific embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0039] In the following description, a large number of specific details are set forth in order to facilitate a thorough understanding of the present application, but the present application can also be implemented in other ways different from those described herein, and those skilled in the art can make similar generalizations without departing from the concept of the present application, therefore the present application is not limited to the specific embodiments disclosed below.

[0040] Secondly, "one embodiment" or "embodiment" referred to herein means that a specific feature, structure or characteristic can be included in at least one implementation of the present application. "In one embodiment" appearing in different places in the specification does not mean the same embodiment, nor is it an embodiment that is separate or alternative to other embodiments.

[0041] Thirdly, the present application is described in detail in conjunction with the schematic diagram, and in the detailed description of the embodiments of the present application, the cross-sectional view of the device structure is partially enlarged without the general proportion for the convenience of description, and the schematic diagram is only an example, which should not limit the scope of protection of the present application. In addition, three-dimensional spatial dimensions including length, width and depth should be included in actual manufacture.

[0042] Embodiment 1

[0043] Reference Figures 1-6 The embodiment provides a system based on the foregoing optical fiber high-speed drawing disc changing zero whipping method, comprising

[0044] The take-up machine main body 100 is provided with the first take-up hub 101 and the second take-up hub 102 on the take-up machine main body 100, the full-disk take-up reel 103 is loaded on the first take-up hub 101, and the empty-disk take-up reel 104 is loaded on the second take-up hub 102;

[0045] The fiber clamp assembly comprises the full-disk fiber clamp 201 arranged on the first take-up hub 101 and the empty-disk fiber clamp 202 arranged on the second take-up hub 102;

[0046] The stop lever assembly comprises a stop lever 301 and a stop lever support 302, the stop lever support 302 is provided with a moving notch 303, and the stop lever 301 is arranged in the moving notch 303, and the stop lever assembly is arranged between the full-disk take-up reel 103 and the empty-disk take-up reel 104.

[0047] The cutting knife assembly comprises a first cutting knife 401 and a second cutting knife 402 arranged on both sides of the stop lever support 302.

[0048] The full-disk servo motor is connected with the first take-up hub and is used for driving the full-disk take-up reel to rotate and output an angle feedback signal.

[0049] The empty-disk servo motor is connected with the second take-up hub and is used for driving the empty-disk take-up reel to rotate and output an angle feedback signal.

[0050] The brake assembly is connected with the first take-up hub and the second take-up hub and is used for applying brake to the full-disk after the disk changing is completed.

[0051] The disk changing swing arm assembly comprises a transverse moving support rod 501, a longitudinal moving support rod 502 and a guide wheel 503 arranged on the longitudinal moving support rod 502, the longitudinal moving support rod 502 can move transversely relative to the transverse moving support rod 501, and the guide wheel 503 can move longitudinally relative to the longitudinal moving support rod 502.

[0052] It should be noted that the transverse movement refers to the direction moving from the full-disk to the empty-disk, and the longitudinal movement refers to the axial direction of the full-disk.

[0053] The PLC controller is electrically connected with the full-disk servo motor, the empty-disk servo motor, the stop lever assembly, the disk changing swing arm assembly and the brake assembly, and controls the stop lever to retreat and the brake to act according to the angle feedback of the full-disk servo motor and the empty-disk servo motor.

[0054] The dance wheel 600 is further included, and the optical fiber is wound on the full-disk or the empty-disk through the dance wheel 600 and the guide wheel 503.

[0055] Specifically, the optical fiber high-speed wire drawing disk changing zero whipping system comprises a take-up machine main body. Two take-up hubs, i.e., a first take-up hub and a second take-up hub, are arranged on the take-up machine main body, wherein the first take-up hub is at a current take-up position and loads a full-disk take-up reel, i.e., a full-disk; and the second take-up hub is at a disk changing standby position and loads an empty-disk take-up reel, i.e., an empty-disk.

[0056] The first take-up hub is connected with the full-disk servo motor, the full-disk servo motor drives the full-disk take-up reel to take up the wire during the wire drawing process, and outputs an angle feedback signal corresponding to the angle of the full-disk through an internal encoder.

[0057] The brake assembly is connected with the first take-up hub, after the disk changing is completed, the brake assembly applies a brake to the full-disk take-up reel, so that the full-disk stops rotating in a short time, so as to unload the full-disk and reload the empty-disk.

[0058] The stop lever assembly includes a stop lever and a stop lever support. The stop lever is reciprocally movable relative to the take-up machine body to switch between an extended position and a retracted position, so that the drawn optical fiber crosses the stop lever during the disk changing process and is pushed by the stop lever when the stop lever is retracted.

[0059] Further, a guide groove is arranged on the stop lever for limiting the movement of the wire, which will not be described in detail.

[0060] The disk changing swing arm assembly adjusts the position of the guide wheel during the disk changing process, changes the spatial path of the optical fiber between the stop lever, the optical fiber clamp assembly and the cutter assembly, and ensures that the optical fiber enters the space range that can be clamped by the full-disk optical fiber clamp when the stop lever is retracted, as shown in Figure 5 .

[0061] The optical fiber clamp assembly includes a full-disk optical fiber clamp 201 arranged on the first take-up hub 101 and an empty-disk optical fiber clamp 202 arranged on the second take-up hub 102. The full-disk optical fiber clamp 201 clamps the outer end of the optical fiber during the disk changing process, and the empty-disk optical fiber clamp 202 clamps the inner end of the optical fiber and continues to take up the wire on the empty-disk take-up reel 104.

[0062] The cutter assembly includes a first cutter 401 and a second cutter 402 arranged between the two take-up reels. The first cutter 401 and the second cutter 402 are fixed between the two take-up reels, and function to contact and cut the optical fiber when the full-disk optical fiber clamp 201 rotates to the position of the first cutter 401 with the full-disk take-up reel 103 during the rotation of the full-disk take-up reel 103.

[0063] The control assembly includes a PLC controller, which converts the angle feedback signals of the two servo motors into the angles between the full-disk optical fiber clamp 201 and the first cutter 401 and the angles between the empty-disk optical fiber clamp 202 and the second cutter 402. The PLC controller is electrically connected with the stop lever assembly, the disk changing swing arm assembly, the brake assembly and the two servo motors, respectively, and issues a stop lever 301 retraction instruction and a brake instruction when the predetermined angle condition is met according to the angle information, to realize the coordinated control of the disk changing process.

[0064] The system structure is improved on the basis of the existing take-up machine, through improving the positions of the full tray and the empty tray, the position of the tray changing swing arm and the PLC control logic, introducing the angle joint determination of the full tray optical fiber clamp 201 and the empty tray optical fiber clamp 202, so that the outer end of the optical fiber on the surface of the full tray is reliably clamped by the full tray optical fiber clamp 201 at the moment of fiber cutting, thereby providing a structural basis for realizing zero whipping.

[0065] Embodiment 2

[0066] This embodiment corresponds to the above-mentioned system structure, and adopts the following optical fiber high-speed drawing tray changing zero whipping method, specifically:

[0067] S1, in the optical fiber drawing take-up process, the full tray arranged on the first take-up hub 101 and the empty tray arranged on the second take-up hub 102 are adjusted to a predetermined tray changing position, and the speed of the empty tray is quickly followed to the line speed of the full tray take-up tray 103 through the driving of the empty tray servo motor, so that the line speeds of the two take-up trays are the same.

[0068] In this step, the relative positions of the full tray and the empty tray on the take-up machine main body 100 are adjusted, so that the two take-up trays are in a spatial layout suitable for tray changing, and the speed following control is implemented on the empty tray take-up tray 104 through the empty tray servo motor, so that the line speed of the empty tray is consistent with the line speed of the full tray. Through this step, the tray changing is prepared based on the uniform line speed condition, which solves the technical problem that the fiber tension suddenly changes due to the mismatch of the line speed at the moment of tray changing, and achieves the effect that the tension is stable during tray changing and the fiber is not easy to break.

[0069] It should be noted that the take-up machine is provided with a dance wheel 600, and the structure of the dance wheel is cited from the prior art with the publication number CN209651611U. The whole is in the shape of V, the middle dance wheel can move up and down, and the position can be detected by an infrared sensor. Its function is to adjust the take-up hub speed to match the unwinding speed during normal take-up. The specific principle is that the dance wheel will descend when the take-up tray speed slows down, and the position of the dance wheel will be detected by the infrared sensor after it descends, and then the speed of the corresponding motor of the take-up tray will be adjusted through PID, that is, an acceleration signal is given to the corresponding motor, so that the position of the dance wheel rises.

[0070] It should be noted that the optical fiber is wound by the take-up tray after passing through the dance wheel, and the unwinding speed of the unwinding tray is constant, that is, the line speed of the optical fiber is constant. Due to the increase in diameter caused by the winding of the optical fiber, the speed of the take-up tray does not match the line speed of the winding of the optical fiber, so the dance wheel is needed to adjust in the middle.

[0071] Further, when the dance wheel is at the position of 400 mm, the fiber line speed matches the take-up reel speed, when the dance wheel position is lowered, the take-up reel speed is increased, the more the dance wheel position is lowered, the faster the take-up reel speed is increased, after adjustment, the dance wheel corresponds to rise to the position of 400 mm, if the dance wheel position is too high and exceeds 400 mm, the take-up reel speed is reduced.

[0072] At the same time, the dance wheel 600 can also digest the small error of the line speed of the two take-up hubs, so that the line speeds of the full hub and the empty hub are consistent in normal operation, and the speeds of the full hub and the empty hub are different, so as to calculate when the stop lever 301 is actuated.

[0073] Then, by controlling the position of the guide wheel 503, the optical fiber is below the first cutter 401 and above the second cutter 402, as shown in Figure 6 The subsequent stop lever 301 retreats to create conditions. By adjusting the path of the stop lever 301 and the position of the guide wheel 503, the technical problem of the traditional scheme that the optical fiber is directly pushed to the empty hub optical fiber clamp 202 after the stop lever 301 retreats and bypasses the full hub optical fiber clamp 201 is solved, and the effect of controllable optical fiber path and meeting the condition of entering the full hub optical fiber clamp 201 space first and then entering the empty hub optical fiber clamp 202 space is obtained.

[0074] S2, in the state that the full hub line speed is the same as the empty hub line speed, based on the angle feedback of the full hub servo motor and the empty hub servo motor, the PLC controller detects the angle between the full hub optical fiber clamp 201 and the first cutter 401 and the angle between the empty hub optical fiber clamp 202 and the second cutter 402, and when the angle between the full hub optical fiber clamp 201 and the first cutter 401 is in the first angle interval and the angle between the empty hub optical fiber clamp 202 and the second cutter 402 is in the second angle interval, the stop lever 301 retreats instruction is sent;

[0075] In the prior art, only the angle of the empty tray servo motor is used to determine the angle between the empty tray fiber clamp 202 and the cutter, and the trigger of the stop lever 301 is triggered after the angle reaches a certain angle (e.g. 45°), ignoring the angle of the full tray fiber clamp 201, which results in that the tail end of the fiber is not clamped at the moment of fiber cutting. In this step, the angle feedback of the full tray servo motor and the empty tray servo motor is collected at the same time, and the angle between the full tray fiber clamp 201 and the first cutter 401 and the angle between the empty tray fiber clamp 202 and the second cutter 402 are calculated by the angle detection module. The PLC controller only triggers the stop lever 301 to retreat in the interval where the angle between the empty tray fiber clamp 202 and the first cutter 401 is greater than the angle between the full tray fiber clamp 201 and the second cutter 402, so as to ensure that the fiber enters the clamping area of the full tray fiber clamp 201 first when the stop lever 301 retreats. By introducing the double-angle joint determination logic in this step, the technical problem of uncontrollable clamping sequence caused by the single-angle constraint of the retreat time of the stop lever 301 is solved, and the effect of the full tray fiber clamp 201 clamping the fiber first in the disc changing process is achieved.

[0076] In a specific preferred embodiment, the PLC controller defines the angle between the full tray fiber clamp 201 and the first cutter 401 as a first angle interval, which is set to 45° in this embodiment, and defines the angle between the empty tray fiber clamp 202 and the second cutter 402 as a second angle interval, which is set to the interval of 50°-90° in this embodiment. At this time, the stop lever 301 is triggered to retreat when the angle between the empty tray fiber clamp 202 and the cutter is between 50° and 90° and the angle between the full tray fiber clamp 201 and the cutter reaches 45°, which ensures that the full tray fiber clamp 201 is in the appropriate clamping position and that the empty tray fiber clamp 202 reaches the vicinity of the second cutter 402 to complete the cutting in a short time thereafter, thereby forming a disc changing window suitable for high-speed drawing conditions.

[0077] S3, in response to the stop lever 301 retreat instruction, controls the stop lever 301 to retreat, pushes the drawing fiber into the full tray fiber clamp 201 first, then pushes it into the empty tray fiber clamp 202, and then cuts the drawing fiber by the first cutter 401 and the second cutter 402 in turn as the two fiber clamps rotate with the respective take-up reels, so that the outer end of the fiber is clamped by the full tray fiber clamp 201 and the inner end of the fiber is clamped by the empty tray fiber clamp 202 and continues to take up the line on the empty tray.

[0078] The stopper 301 is withdrawn from the extended position under the instruction of the PLC controller, and the optical fiber is first pushed into the full-disk optical fiber clamp 201 below the first cutter 401 by relative movement with the optical fiber, so that the outer end of the optical fiber is clamped by the full-disk optical fiber clamp 201; as the stopper 301 continues to be withdrawn, the optical fiber is further pushed into the empty-disk optical fiber clamp 202, so that the inner end of the optical fiber is clamped by the empty-disk optical fiber clamp 202. As the optical fiber is in the position below the first cutter 401, the outer end of the optical fiber is not in contact with the first cutter 401 when the full-disk optical fiber clamp 201 clamps the outer end of the optical fiber, and then the empty-disk optical fiber clamp 202 is rotated to the second cutter 402 with the empty-disk take-up reel 104, and the optical fiber is cut by the second cutter 402. Through the sequential clamping and cutting process in this step, the technical problem of free swinging of the outer end of the optical fiber at the moment of cutting is solved, and the effect of the outer end of the optical fiber being always restrained by the full-disk optical fiber clamp 201 and not whipping after cutting is achieved.

[0079] S4, after the optical fiber is cut and the empty disk starts to take up the line, the full disk is braked to make the full disk stop quickly, and after the full disk stops, the full disk is unloaded and the empty disk is reinstalled for the next disk replacement.

[0080] In this step, the full-disk take-up reel 103 enters the braking stage immediately after the optical fiber is cut, and the braking assembly applies a brake to the full disk to make the full disk stop rotating in a short time. During the braking and stopping process, the full-disk optical fiber clamp 201 always clamps the outer end of the optical fiber, so the surface optical fiber of the full disk is in a stable state and will not swing due to inertia. After the full disk stops, the full disk is unloaded and the empty disk is reloaded, preparing for the next disk replacement cycle. Through this step, the clamping state of the outer end of the optical fiber is maintained before the full disk stops, solving the technical problem of the tail end of the surface optical fiber of the full disk possibly swinging again due to deceleration disturbance during the braking stage, and achieving the effect of zero whipping of the surface optical fiber of the full disk during the entire disk replacement process.

[0081] Further, the PLC controller issues the stopper 301 withdrawal instruction when it detects that the first angle interval between the full-disk optical fiber clamp 201 and the first cutter 401 is 45° and the second angle interval between the empty-disk optical fiber clamp 202 and the second cutter 402 is between 50° and 90°.

[0082] The full-disk optical fiber clamp 201 is located below the first cutter 401 when it clamps the optical fiber, so that the full-disk optical fiber clamp 201 clamps the outer end of the optical fiber while the outer end of the optical fiber is not in contact with the cutter, and then the empty-disk optical fiber clamp 202 clamps the inner end of the optical fiber and cuts the optical fiber by the first cutter 401 during the rotation process.

[0083] The optical fiber is in the moving path of the full-disk optical fiber clamp 201 and the empty-disk optical fiber clamp 202 when the stopper 301 is withdrawn.

[0084] The setting of this position is achieved by controlling the position of the vertical moving support rod 502, as shown in Figure 6The control longitudinal moving support rod is shown in the position of the right side of the empty tray.

[0085] The structural modification based on the existing tray changing process is described as follows:

[0086] Taking the tray changing from the first take-up hub 101 to the second take-up hub 102 as an example, in the existing scheme, only clamping one end of the empty tray can cause the optical fiber to be directly pushed into the empty tray optical fiber clamp 202 and clamped and cut at the cutter, and the tail end of the optical fiber on the full tray surface is not clamped and whipping occurs. In the present application, Figure 6 The improved angle control logic is shown, and the stop lever 301 retreat signal needs to meet the following two conditions at the same time:

[0087] The angle between the full tray optical fiber clamp 201 and the cutter is 45°;

[0088] The angle between the empty tray optical fiber clamp 202 and the cutter is between 50° and 90°.

[0089] Under the above two conditions, the stop lever 301 retreat can ensure that the optical fiber is first clamped by the full tray optical fiber clamp 201, then clamped by the empty tray optical fiber clamp 202, and then cut by the second cutter 402 during the subsequent rotation. Due to the different positions of the optical fiber, when the full tray optical fiber clamp 201 clamps the optical fiber, the optical fiber is below the first cutter 401 and will not be cut; after the optical fiber is clamped by the empty tray optical fiber clamp 202, it is rotated to the second cutter 402 to complete the cutting. At this time, the empty tray optical fiber clamp 202 clamps the inner end of the optical fiber to continue taking up on the empty tray take-up tray 104, and the full tray optical fiber clamp 201 clamps the outer end of the optical fiber to cooperate with the brake assembly to stop the full tray take-up tray 103, thereby avoiding the whipping phenomenon and achieving zero whipping.

[0090] The present application changes the clamping sequence of the optical fiber during the tray changing process from "first clamping the empty tray and then cutting" to "first clamping the outer end of the optical fiber by the full tray optical fiber clamp 201 and then clamping the inner end of the optical fiber by the empty tray optical fiber clamp 202 and cutting", so that the outer end of the optical fiber on the full tray surface is stably clamped by the full tray optical fiber clamp 201 at the moment of cutting, avoiding the whipping phenomenon of the tail end of the optical fiber on the high-speed rotating full tray surface.

[0091] By introducing the full tray optical fiber clamp 201 and cutter angle and the empty tray optical fiber clamp 202 and cutter angle into the PLC at the same time, the stop lever 301 retreat is triggered only when the full tray angle reaches the set value and the empty tray angle is in a predetermined range higher than the full tray angle, so that the optical fiber enters the two optical fiber clamps in sequence, ensuring the reliability of the clamping sequence and clamping position, and avoiding misoperation caused by improper angle setting.

[0092] In a specific embodiment, by setting the angle between the full-reel fiber clamp 201 and the cutter to 45° and the angle between the empty-reel fiber clamp 202 and the cutter to 50° to 90°, combined with the drawing speed and the diameter of the take-up reel, a reel-changing window suitable for high-speed drawing conditions is formed, making the reel-changing process stable and highly repeatable.

[0093] This invention can be modified based on the original take-up machine structure by adjusting the position of the take-up hub, the position of the guide wheel 503, and adding angle determination logic to the PLC program. It does not require major modifications to the whole machine, has low modification costs, and can be promoted and applied on existing production lines.

[0094] In the full-disk braking stage after disk replacement, the full-disk fiber clamp 201 always holds the outer end of the fiber, and the outer end of the fiber will not swing during braking, deceleration and stopping. This achieves zero fiber whipping on the full disk surface under high-speed conditions, significantly reduces the length of fiber scrap, and improves the quality of the finished disk and the overall economy of the production line.

[0095] It should be understood that numerous specific implementation decisions can be made during the development of any practical implementation, such as in any engineering or design project. Such development efforts may be complex and time-consuming, but for those skilled in the art who benefit from this disclosure, the development effort will be a routine work of design, manufacturing, and production without requiring much experimentation.

[0096] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A method for high-speed fiber drawing and reel changing with zero whipping, characterized in that: include, S1, during the fiber drawing and take-up process, the full reel set on the first take-up hub and the empty reel set on the second take-up hub are adjusted to the predetermined reel changing position, and the empty reel servo motor drives the speed of the empty reel to quickly follow the linear speed of the full reel, so that the linear speed of the two take-up reels is the same. S2, when the full disk linear speed is the same as the empty disk linear speed, based on the angle feedback of the full disk servo motor and the empty disk servo motor, the PLC controller detects the angle between the full disk fiber clamp and the first cutter and the angle between the empty disk fiber clamp and the second cutter. When the angle between the full disk fiber clamp and the first cutter is in the first angle range and the angle between the empty disk fiber clamp and the second cutter is in the second angle range, a lever retraction command is issued. S3, responding to the lever retraction command, control the lever to retract, first push the drawn fiber into the full-reel fiber clamp for clamping, then push it into the empty-reel fiber clamp for clamping, and as the two fiber clamps rotate with their respective take-up reels, the drawn fiber is cut by the second cutter, so that the outer end of the fiber is clamped by the full-reel fiber clamp and the inner end of the fiber is clamped by the empty-reel fiber clamp, and take-up continues on the empty reel. S4, after the optical fiber is cut and the empty reel begins to reel in, apply the brakes to the full reel to bring it to a quick stop, and after the full reel stops, remove the full reel and reinstall the empty reel in preparation for the next reel change. The PLC controller issues the lever retraction command when it detects that the first angle range between the full-disc fiber clamp and the first cutter is 45° and the second angle range between the empty-disc fiber clamp and the second cutter is between 50° and 90°.

2. The fiber optic high-speed drawing and reel-changing zero-whipping method according to claim 1, characterized in that: When the full-disc fiber clamp holds the fiber, it is positioned below the first cutter, so that while the full-disc fiber clamp holds the outer end of the fiber, the outer end of the fiber does not come into contact with the cutter. Subsequently, the empty-disc fiber clamp holds the inner end of the fiber and cuts the fiber through the first cutter during rotation.

3. The fiber optic high-speed drawing and reel-changing zero-whipping method according to claim 2, characterized in that: When the lever retracts, the optical fiber is on the moving path of the full-disc optical fiber clamp and the empty-disc optical fiber clamp.

4. The fiber optic high-speed drawing and reel-changing zero-whipping method according to claim 3, characterized in that: After the full-disc fiber clamp holds the fiber, the fiber between the full-disc fiber clamp and the stop bar is below the first cutter. After the empty disc fiber clamp holds the fiber, the fiber between the empty disc fiber clamp and the stop bar is above the second cutter.

5. A system based on the zero-whipping method for high-speed fiber drawing and reel changing according to any one of claims 1 to 4, characterized in that: include The main body of the take-up machine (100) is provided with a first take-up hub (101) and a second take-up hub (102). The first take-up hub (101) is loaded with a full take-up reel (103), and the second take-up hub (102) is loaded with an empty take-up reel (104). The fiber optic clamp assembly includes a full-disc fiber optic clamp (201) disposed on the first take-up hub (101) and an empty-disc fiber optic clamp (202) disposed on the second take-up hub (102). The stop lever assembly includes a stop lever (301) and a stop lever bracket (302). The stop lever bracket (302) is provided with a movable slot (303). The stop lever (301) is disposed in the movable slot (303). The stop lever assembly is disposed between a full reel take-up reel (103) and an empty reel take-up reel (104). The cutter assembly includes a first cutter (401) and a second cutter (402) disposed on both sides of the stop lever bracket (302).

6. The system according to claim 5, characterized in that: It also includes a full-reel servo motor, which is connected to the first take-up hub and is used to drive the full-reel take-up reel to rotate and output an angle feedback signal; An empty reel servo motor is connected to the second take-up hub and is used to drive the empty reel take-up reel to rotate and output an angle feedback signal. A braking assembly, connected to the first and second take-up hubs, is used to apply braking to the full disc after a disc change is completed.

7. The system according to claim 6, characterized in that: It also includes a plate-changing swing arm assembly, which includes a transverse support rod (501), a longitudinal support rod (502), and a guide wheel (503) disposed on the longitudinal support rod (502). The longitudinal support rod (502) can move laterally relative to the transverse support rod (501), and the guide wheel (503) can move longitudinally relative to the longitudinal support rod (502).

8. The system according to claim 7, characterized in that: It also includes a PLC controller, which is electrically connected to the full-disc servo motor, the empty-disc servo motor, the stop lever assembly, the disc changing arm assembly, and the brake assembly. The PLC controller controls the stop lever retraction and braking action based on the angle feedback of the full-disc servo motor and the empty-disc servo motor.

9. The system according to claim 8, characterized in that: It also includes a dance wheel (600), through which the optical fiber is wound onto a full or empty disc via the dance wheel (600) and the guide wheel (503).

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