Wire drawing auxiliary device and wire drawing method

Abstract

This invention discloses a fiber drawing auxiliary device and a fiber drawing method, relating to the field of optical fiber manufacturing and processing technology. The fiber drawing auxiliary device includes: a carrier having a bearing surface with a central hole penetrating the carrier along its thickness direction; a first driving member; and a plurality of extrusion members spaced apart along the outer periphery of the central hole on the bearing surface, each extrusion member having an extrusion surface facing the centerline of the central hole; wherein the plurality of extrusion members can be driven by the first driving member to be in a first position or a second position. In the first position, the plurality of extrusion surfaces are close to the centerline to enclose an extrusion space overlapping the central hole; in the second position, the plurality of extrusion surfaces are away from the centerline.

Description

Technical Field

[0001] This application relates to the field of optical fiber manufacturing and processing technology, and in particular to a fiber drawing auxiliary device and a fiber drawing method. Background Technology

[0002] Fiber optic imaging elements are arrays of tens of millions of micrometer-sized glass fibers arranged in a regular pattern and then fused together. They enable high-fidelity, high-definition, and high-resolution transmission of optical images, possessing what is known as optical zero-thickness characteristics. The fabrication process for these elements is extremely complex. To achieve micrometer-level precision, ordinary glass fibers are first arranged into composite optical fiber rods, then drawn into fine filaments using a drawing furnace. This process is repeated twice, followed by fusion pressing to final shape. Maintaining the tightness of the fiber arrangement is a key challenge throughout these processes, directly impacting shear distortion—the misalignment or rotation of the transmitted linear image relative to the ideal state.

[0003] Currently, in production, composite optical fiber rods are typically hand-wound using materials such as aluminum foil or raw material tape to ensure their tightness. However, this method not only relies on the operator's manual skills but also suffers from uneven winding force, making it prone to loosening and causing problems with the internal fiber filaments, such as cracks, misalignments, or voids. These problems are amplified in subsequent melting and pressing steps, causing the glass fiber filaments to deform or become opaque, further exacerbating shear distortion.

[0004] Therefore, how to provide a drawing aid device and drawing method to reduce the shear distortion of composite fibers is an urgent problem to be solved. Summary of the Invention

[0005] To address the aforementioned technical problems, this application provides the following technical solutions:

[0006] The first aspect of this application provides a wire drawing auxiliary device, comprising: a carrier having a bearing surface, the bearing surface having a central hole penetrating the carrier along the thickness direction of the carrier; a first driving member; and a plurality of extruders spaced apart on the bearing surface along the outer periphery of the central hole, each extruder having an extrusion surface facing the center line of the central hole; wherein the plurality of extruders can be driven by the first driving member to be in a first position or a second position, in the first position, the plurality of extrusion surfaces are close to the center line to enclose an extrusion space overlapping with the central hole, and in the second position, the plurality of extrusion surfaces are away from the center line.

[0007] In some embodiments, the extrusion surface is rotatable relative to the bearing surface, and its rotation axis is perpendicular to the thickness direction of the bearing.

[0008] In some embodiments, in the first position, the extrusion space formed by the plurality of extrusion surfaces close to the center line is a space with an outer closed perimeter.

[0009] In some embodiments, the wire drawing auxiliary device further includes: a heat insulation seat having two mounting surfaces opposite each other, one for fixing the carrier and the other for connecting the wire drawing furnace, and a heat insulation portion extending along the thickness direction of the carrier between the two mounting surfaces; the heat insulation seat has a hollow area corresponding to and communicating with the central hole.

[0010] In some embodiments, the heat insulation portion is capable of extending and contracting along the thickness direction of the support.

[0011] In some embodiments, the carrier includes: a first carrier plate having a first central hole; and a second carrier plate having a second central hole corresponding to the first central hole, wherein the second carrier plate is stacked on top of the first carrier plate and the second carrier plate is rotatably connected to the first carrier plate, so that the second carrier plate can drive a plurality of extrusion members to rotate relative to the first carrier plate.

[0012] In some embodiments, the wire drawing auxiliary device further includes: a control component; and a second drive member, the drive end of which is connected to the second support plate, and the second drive member is signal-connected to the control component, and is capable of controlling the rotation angle of the second support plate based on the control command of the control component.

[0013] In some embodiments, the wire drawing auxiliary device further includes: a third driving member; a plurality of clamping members disposed on a heat insulation seat, wherein the plurality of clamping members correspond one-to-one with the plurality of extrusion members in the extension direction of the center line, and each clamping member has a clamping surface facing the center line of the center hole; wherein the plurality of clamping members can be driven by the third driving member to be in a third position or a fourth position, wherein in the third position, the plurality of clamping surfaces are close to the center line to enclose and form a clamping space overlapping with the center hole, and in the fourth position, the plurality of clamping surfaces are away from the center line.

[0014] The second aspect of this application provides a fiber drawing method, comprising the following steps: suspending a composite optical fiber rod on a rod-hanging platform above a fiber drawing furnace; selecting and replacing an extruder that is compatible with the size of the composite optical fiber rod; inserting the composite optical fiber rod into the fiber drawing furnace for chemical treatment; opening a cylinder switch to extend the extrusion surface of the extruder and press against the composite optical fiber rod; adjusting the position of the composite fiber rod and controlling the shape of the drawn fiber filaments before and during fiber drawing.

[0015] In some embodiments, controlling the shape of the pulled-out fiber filament specifically involves rotating the bearing surface according to the twist of the pulled-out filament to ensure that the pulled-out fiber filament does not twist.

[0016] Compared to existing technologies, the fiber-drawing auxiliary device and method provided in this application employ multiple extruders spaced apart along the outer periphery of the central hole. A first driving component moves the extruders closer to or further away from the center line, ensuring tight winding and solving the loosening problem caused by uneven manual winding force. This uniform extrusion not only improves the internal quality of the product, effectively reducing cracks, misalignments, or voids in the internal fibers, but also significantly reduces shear distortion in subsequent melting and pressing steps due to the uniformity of the fiber rod's internal structure, ensuring the shape and light transmittance of the glass fiber filaments. Furthermore, the mechanized operation of this device reduces reliance on manual skills, improves production efficiency, and reduces product defect rates caused by improper manual operation. Attached Figure Description

[0017] The above and other objects, features, and advantages of exemplary embodiments of this application will become readily understood by reading the following detailed description with reference to the accompanying drawings. In the drawings, several embodiments of this application are illustrated by way of example and not limitation, with the same or corresponding reference numerals denoteing the same or corresponding parts, wherein:

[0018] Figure 1 A schematic three-dimensional structural diagram of a wire drawing auxiliary device provided in this embodiment is shown.

[0019] Figure 2 A schematic side view of a wire drawing auxiliary device provided in this embodiment is shown.

[0020] Figure 3 A schematic top view of a wire drawing auxiliary device provided in this embodiment is shown.

[0021] Figure 4 The flowchart illustrating the steps of a wire drawing method provided in this embodiment is shown in the schematic diagram.

[0022] Explanation of icon numbers:

[0023] 1. Carrier; 11. First carrier plate; 12. Second carrier plate; 121. Carrier surface; 13. Center hole; 2. First driving component; 3. Extrusion component; 31. Extrusion surface; 4. Extrusion space; 5. Heat insulation seat; 51. Heat insulation part; 511. Hollow area; 6. Fiber rod to be processed. Detailed Implementation

[0024] Exemplary embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

[0025] It should be noted that, unless otherwise stated, the technical or scientific terms used in this application shall have the ordinary meaning as understood by one of ordinary skill in the art to which this application pertains.

[0026] The inventors discovered that the fabrication process of fiber optic imaging elements is complex, requiring micron-level precision. This process involves arranging ordinary glass fiber filaments into composite optical fiber rods, drawing them into filaments through two drawing furnaces, and then pressing them to meet standards. Maintaining the tightness of the optical fiber filaments and preventing shear distortion (i.e., misalignment or rotation of the transmitted image) during the arrangement and drawing process are the main challenges. Current methods typically use aluminum foil or PTFE tape to manually wind the composite optical fiber rods to maintain their tightness, but this method is prone to loosening due to uneven winding force, leading to problems such as internal fiber cracks, misalignment, or voids. These problems can cause glass fiber filament deformation and opacity during subsequent melting and pressing, ultimately affecting product quality and causing shear distortion.

[0027] The technical solution of this invention is to solve the above-mentioned technical problems, and the overall idea is as follows:

[0028] Reference Appendix Figure 1 - Appendix Figure 3 The present application provides a wire drawing auxiliary device, comprising: a carrier 1 having a bearing surface 121, the bearing surface 121 having a central hole 13 penetrating the carrier 1 along the thickness direction of the carrier 1; a first driving member 2; and a plurality of extrusion members 3, which are spaced apart on the bearing surface 121 along the outer periphery of the central hole 13, and each extrusion member 3 has an extrusion surface 31 facing the center line of the central hole 13; wherein, the plurality of extrusion members 3 can be driven by the first driving member 2 to be in a first position or a second position. In the first position, the plurality of extrusion surfaces 31 are close to the center line to enclose and form an extrusion space 4 overlapping with the central hole 13. In the second position, the plurality of extrusion surfaces 31 are away from the center line.

[0029] In one possible case, such as Figures 1-3As shown, the support body 1 provides a stable working platform and has a flat bearing surface 121. The size and shape of the bearing surface 121 can be set according to actual needs. A central hole 13 is provided on the bearing surface 121, which penetrates the entire support body 1 along the thickness direction. The purpose of the central hole 13 is to allow the fiber rod 6 to be processed (such as a composite fiber rod) to pass through, so as to ensure unobstructed movement during the drawing process. The first drive member 2 is used to control the position conversion of multiple extruders 3. The first drive member 2 can be a device capable of generating linear or rotary motion, such as a hydraulic cylinder, pneumatic piston, or electric motor. The first drive member 2 is connected to each extruder 3, and the movement of the extruder 3 from a first position to a second position and vice versa is achieved through precise control. Multiple extruders 3 are evenly distributed around the outer periphery of the central hole 13, and these extruders 3 can move radially under the action of the first drive member 2. Each extruder 3 has an extrusion surface 31 facing the center line of the central hole 13. The shape of the extrusion surface 31 can be set as needed, such as a rectangular surface or an arc surface. When these extrusion surfaces 31 are close to the fiber rod 6 to be processed, they can jointly enclose an extrusion space 4 that overlaps with the central hole 13. The shape and size of this extrusion space 4 can be adjusted as needed to adapt to the drawing requirements of different diameters. The number of extruders 3 can be set according to the shape of the fiber rod 6 to be processed. For example, when the cross-section of the fiber rod 6 to be processed is a hexagonal composite fiber, six extruders 3 can be set, and the six extruders 3 correspond one-to-one with the six outer peripheral surfaces of the hexagonal composite fiber.

[0030] When multiple extruders 3 are in the first position, their extrusion surfaces 31 will be tightly fitted together, forming an extrusion space 4. Each extrusion surface 31 corresponds to and fits against the outer peripheral surface of the fiber rod 6 to be processed. The pressure applied by the extrusion surfaces 31 helps straighten and align the fibers of the fiber rod 6, ensuring structural consistency and strength. Uniformly distributed pressure effectively prevents cracking or relative displacement of the fibers during stretching. By precisely controlling the first drive component 2, the pressure applied by each extruder 3 can be adjusted to suit different types of fiber materials. Lower pressure can be used for more fragile or pressure-sensitive fibers, while higher pressure can be applied for fibers requiring higher strength treatment. When no additional pressure is needed on the fiber rod 6 to be processed, or before changing to a different specification fiber rod 6, the multiple extruders 3 can be moved to the second position using the first drive component 2. At this time, the extrusion surfaces 31 of each extruder 3 are away from the centerline, providing sufficient space for the fiber rod 6 to be processed to avoid any unnecessary contact or deformation.

[0031] The fiber drawing auxiliary device and method provided in this application employ multiple extruders 3 spaced apart around the outer periphery of the central hole 13. A first driving member 2 drives the extruders 3 closer to or further away from the center line, thereby ensuring the tightness of the winding and solving the problem of loosening caused by uneven force during manual winding. This uniform extrusion not only improves the internal quality of the product, effectively reducing cracks, misalignments, or voids in the internal fibers, but also significantly reduces shear distortion in the subsequent melting and pressing steps due to the uniformity of the fiber rod's internal structure, ensuring the shape and light transmittance of the glass fiber. Furthermore, the mechanized operation of this device reduces reliance on manual skills, improves production efficiency, and reduces the product defect rate caused by improper manual operation.

[0032] In some embodiments, the extrusion surface 31 is rotatable relative to the bearing surface 121, and its rotation axis is perpendicular to the thickness direction of the bearing 1.

[0033] In one possible case, such as Figures 1-3 As shown, the extruder 3 can be a roller, and its outer peripheral surface can be an extrusion surface 31. The extruder 3 is rotatably connected to the driving end of the first driving member 2 so that the extrusion surface 31 can rotate relative to the bearing surface 121. When the extrusion surface 31 contacts the fiber rod 6 to be processed, it can rotate along with the movement of the fiber rod 6 to be processed. This rotation reduces the sliding friction between the fiber rod 6 to be processed and the extrusion surface 31, reduces the risk of damage to the fiber rod 6 to be processed, and helps to straighten and arrange the fibers in the fiber rod 6 to be processed neatly.

[0034] In some embodiments, in the first position, the extrusion surfaces 31 are close to the center line to enclose the extrusion space 4, which is a space with a closed outer perimeter.

[0035] In one possible case, such as Figure 3 As shown, multiple extrusion surfaces 31 form a continuous, seamless extrusion space 4. This extrusion space 4 can be an annular space, which is completely in contact with the outer peripheral surface of the fiber rod 6 to be processed, so that the pressure can be evenly distributed around the fiber, avoiding local overpressure or underpressure, and preventing cracks, misalignment and voids in the fiber rod 6 to be processed.

[0036] In some embodiments, the wire drawing auxiliary device further includes: a heat insulation seat 5, which has two mounting surfaces opposite each other, one for fixing the carrier 1 and the other for connecting the wire drawing furnace, and a heat insulation portion 51 extending along the thickness direction of the carrier 1 is provided between the two mounting surfaces; the heat insulation seat 5 has a hollow region 511 corresponding to and communicating with the central hole 13.

[0037] In one possible case, such as Figures 1-3As shown, the heat insulation seat 5 has two opposing mounting surfaces, one for fixing the carrier 1 and the other for connecting the wire drawing furnace. The distance between these two mounting surfaces can be adjusted according to actual needs to accommodate equipment of different sizes. A heat insulation section 51 extending along the thickness direction of the carrier 1 is provided between the two mounting surfaces. This heat insulation section 51 is made of high-efficiency heat insulation materials, such as ceramic fibers, aerogel, or high-density polystyrene foam. These materials have low thermal conductivity, which can significantly reduce heat transfer to the carrier 1 and the extruder 3. The heat insulation seat 5 has a hollow region 511 corresponding to the central hole 13 inside. This hollow region 511 allows the fiber rod 6 to be processed to pass through and can further reduce temperature conduction through natural convection or forced ventilation. Furthermore, the hollow region 511 can also serve as a channel for the flow of cooling media (such as air or water), enhancing the heat insulation effect. By providing the heat insulation seat 5, deformation of the extrusion surface 31 due to high temperatures can be prevented, thus affecting its extrusion effect on the fiber rod 6.

[0038] In some embodiments, the heat insulation portion 51 is capable of extending and retracting along the thickness direction of the support body 1.

[0039] In one possible scenario, the heat insulation section 51 may include multiple telescopic columns. Each telescopic column may contain an inner column, an outer column, a helical spring, and a limiting member. The inner column is the moving part of the telescopic column, with one end connected to a mounting surface and the other end connected to the helical spring. The helical spring surrounds the inner column, and the number of helical springs may be one or more. The outer cylinder may be a hollow cylinder, fitted and slidably connected to the inner column, housing the inner column and the helical spring. The limiting member limits the maximum sliding distance between the outer and inner columns, preventing damage caused by excessive stretching or compression of the helical spring. The limiting member may be a retaining ring, a nut, or other form of mechanical stop. When the temperature of the wire drawing furnace rises, the heat insulation section 51 needs to increase in height to better insulate heat. In this case, the helical spring will naturally extend due to the lack of external pressure, pushing the inner and outer columns to slide relative to each other, thereby increasing the overall height of the heat insulation section 51. Conversely, when the temperature decreases, or when it is necessary to reduce the thickness of the heat insulation section 51, the helical spring can be compressed by externally applied pressure or tension. For example, a cylinder, hydraulic cylinder, or manual adjustment device can be used to apply pressure, forcing the inner column to slide relative to the outer column, thereby reducing the height of the heat insulation part 51.

[0040] In addition, to monitor the temperature at the bearing surface 121 in real time and prevent damage to the extrusion surface 31 due to excessive temperature, a temperature sensor can be installed at the bearing surface 121 for real-time temperature monitoring. The temperature sensor is connected to the control component, which controls the extension height of the telescopic column based on the temperature information obtained by the temperature sensor. The device may also include an alarm device, which can be an audible and visual alarm device, connected to the temperature sensor, and triggers an audible alarm signal or a warning light alarm signal based on the temperature data from the temperature sensor.

[0041] In some embodiments, the carrier 1 includes: a first carrier plate 11 having a first central hole; and a second carrier plate 12 having a second central hole corresponding to the first central hole. The second carrier plate 12 is stacked with the first carrier plate 11 and is rotatably connected to the first carrier plate 11, so that the second carrier plate 12 can drive a plurality of extrusion members 3 to rotate relative to the first carrier plate 11.

[0042] In one possible case, such as Figures 1-3 As shown, the first support plate 11 provides a stable working platform and has a first central hole to allow the fiber rod 6 to be processed to pass through. The second support plate 12 is located above the first support plate 11 and also has a second central hole aligned with the first central hole to ensure that the fiber can pass smoothly through the entire system. The first support plate 11 and the second support plate 12 are rotatably connected by appropriate mechanical connections (such as bearings, shafts, etc.), or they can be rotatably connected by the cooperation of ball bearings and arc-shaped grooves. The ball bearings are embedded in a pre-designed groove at the bottom of the second support plate 12 and cooperate with the arc-shaped groove on the first support plate 11. To prevent unintentional rotation, the position of the second support plate 12 can be fixed by a locating pin or locking mechanism when rotation is not required. During the fiber drawing process, the angle of the extruder 3 relative to the fiber can be adjusted in real time by rotating the second bearing plate 12, thereby preventing the fiber from twisting. This allows the operator to flexibly control the degree of fiber twisting according to specific needs, ensuring that each fiber achieves the best structure and performance, avoiding problems such as cracks, misalignments, and voids inside the fiber, and reducing the size and frequency of shear distortion.

[0043] In some embodiments, the wire drawing auxiliary device further includes: a control component; a second drive member, the drive end of which is connected to the second support plate 12, and the second drive member is signal-connected to the control component, and is capable of controlling the rotation angle of the second support plate 12 based on the control command of the control component.

[0044] In one possible scenario, the control component includes, but is not limited to, a programmable logic controller (PLC), a microprocessor, etc., capable of receiving data from sensors, processing logical operations, and sending control commands to the first drive unit 2 and the second drive unit. The second drive unit is used to drive the second support plate 12 to rotate, and can be a stepper motor, a servo motor, or other types of electric motors, the specific selection depending on the required accuracy, speed, and torque requirements. During the drawing process of the fiber rod 6, the operator can send control commands to the second drive unit through the control component to rotate the second support plate 12, preventing the fiber rod 6 from twisting. Since the device is located above the drawing furnace, there is a risk of burns when the operator manually rotates the second support plate 12. Driving the second support plate 12 to rotate through the control component effectively avoids the risk of burns that may occur when the operator manually rotates the second support plate 12. In addition, in order to accurately measure whether the fiber rod 6 has rotated, the device can be equipped with a torque measuring instrument, which can accurately measure whether the limit switch has twisted.

[0045] In some embodiments, the wire drawing auxiliary device further includes: a third driving member; a plurality of clamping members disposed on the heat insulation seat 5, wherein the plurality of clamping members correspond one-to-one with the plurality of extrusion members 3 in the extension direction of the center line, and each clamping member has a clamping surface facing the center line of the center hole 13; wherein the plurality of clamping members can be driven by the third driving member to be in a third position or a fourth position, wherein in the third position, the plurality of clamping surfaces are close to the center line to enclose and form a clamping space overlapping with the center hole 13, and in the fourth position, the plurality of clamping surfaces are away from the center line.

[0046] In one possible scenario, a third driving element is used to move multiple clamping elements, allowing them to switch between a third position (near the centerline) and a fourth position (away from the centerline). This third driving element can be a cylinder, hydraulic cylinder, electric push rod, etc. The clamping elements are mounted on the heat-insulating base 5, each with a clamping surface facing the centerline of the central hole 13. The clamping surface of each clamping element is designed to closely conform to the fiber surface, providing a uniform pressure distribution. The extruder 3 and the clamping elements form two distinct pressure control mechanisms. The extruder 3 primarily forms the initial cylindrical extrusion space 4, while the clamping elements can apply further precise pressure as needed. This multi-stage pressure control allows the fiber rod 6 to be processed to undergo more meticulous handling during its passage. The clamping elements are evenly distributed around the centerline, and when they are in the third position (near the centerline), they can form a clamping space overlapping with the central hole 13. This arrangement ensures that the pressure is evenly distributed around the fiber rod 6, reducing localized overpressure or underpressure, thereby avoiding the risk of internal cracks or misalignment in the fiber rod 6. The position of the clamping component can be flexibly adjusted according to actual needs via the third driving component. For example, during the fiber drawing process, if twisting or misalignment of the fiber rod 6 to be processed is detected, the control system can send a command to the third driving component to quickly move the clamping component to the third position, immediately correcting the fiber rod 6. The design incorporating multiple clamping components and the third driving component brings greater flexibility and more precise control to the fiber drawing auxiliary device. By precisely controlling the position of the clamping component, the fiber rod 6 to be processed can be further straightened during the fiber drawing process, ensuring the internal structure of the composite optical fiber rod. This further avoids problems such as fiber cracks, misalignment, and voids inside the fiber rod 6, reducing the magnitude and frequency of shear distortion.

[0047] The second aspect of this application provides a fiber drawing method, comprising the following steps: suspending a composite optical fiber rod on a rod-hanging platform above a fiber drawing furnace; selecting and replacing an extruder 3 that is compatible with the size of the composite optical fiber rod; inserting the composite optical fiber rod into the fiber drawing furnace for chemical treatment; turning on a cylinder switch to extend the extrusion surface 31 of the extruder 3 and press against the composite optical fiber rod; adjusting the position of the composite fiber rod and controlling the shape of the drawn fiber filaments before and during fiber drawing.

[0048] S1. Hang the composite optical fiber rod on the rod hanging platform above the drawing furnace;

[0049] In one possible case, such as Figure 4As shown, according to the process requirements, the fiber filaments are arranged into a hexagonal composite optical fiber rod, ensuring that the internal structure of both ends is compact and misaligned. Then, copper wire is used to firmly bind both ends of the composite optical fiber rod to prevent the fibers from loosening or misaligning. Next, a cotton thread is used to tightly bind the middle of the rod, ensuring that the fiber filaments on the rod surface are not warped or bent, and that there are no misalignments or gaps inside. The prepared composite optical fiber rod is then hung on the rod-hanging platform above the drawing furnace, ensuring a stable suspension for subsequent operations.

[0050] S2. Select and replace the extrusion part 3 that is compatible with the size of the composite optical fiber rod;

[0051] In one possible case, such as Figure 4 As shown, select and replace appropriate extruders 3 and clamping parts according to the actual size of the fiber rod 6 to be processed, ensuring that the width of the extrusion surface 31 and the clamping surface is the same as the side length of the fiber rod 6 to be processed, but the width must not be greater than the side length, so as not to affect the normal operation of the equipment, provide uniform pressure distribution, and avoid local overpressure or underpressure.

[0052] S3. Insert the composite optical fiber rod into the drawing furnace for chemical treatment, turn on the cylinder switch, so that the extrusion surface 31 of the extruder 3 extends out and presses against the composite optical fiber rod.

[0053] In one possible case, such as Figure 4 As shown, the composite optical fiber rod is slowly inserted into the drawing furnace to begin normal material processing. The insertion speed is controlled to avoid breakage or deformation of the fiber rod due to excessive speed. The cylinder is activated, specifically the first drive component 2, which drives the extrusion surface 31 of the extruder 3 to extend, ensuring it closely adheres to and presses against the fiber rod 6 to be processed, forming a stable extrusion space 4. This applies uniform pressure to the fiber rod, helping to straighten and align the fiber filaments neatly. Additionally, the cylinder operation is ensured to be smooth to avoid excessive impact that could damage the fiber rod. The cylinder pressure is adjusted, and the extrusion force is optimized according to actual conditions to ensure the fiber rod is straightened and compressed under controlled conditions.

[0054] S4. Before and during the drawing process, adjust the position of the composite fiber rod and control the shape of the drawn fiber filaments.

[0055] In one possible case, such as Figure 4 As shown, before and during the drawing process, the position of the composite fiber rod is continuously adjusted to ensure that the fiber rod 6 to be processed is in the center of the drawing furnace and is heated evenly. After preparation, the drawing process begins, and the rotating cover is adjusted at any time according to the shape of the filament and the equipment display. The position of the composite optical fiber rod is adjusted by rotating the rotating cover to ensure that the drawn fiber filament does not twist.

[0056] The fiber drawing method provided in this application employs multiple extruders 3 spaced apart around the outer periphery of the central hole 13. A first driving element 2 drives the extruders 3 closer to or further away from the center line, ensuring tight winding and solving the loosening problem caused by uneven force during manual winding. This uniform extrusion not only improves the internal quality of the product, effectively reducing cracks, misalignments, or voids in the internal fibers, but also significantly reduces shear distortion in the subsequent melting and pressing steps due to the uniformity of the fiber rod's internal structure, ensuring the shape and light transmittance of the glass fiber filaments. Furthermore, the mechanized operation of this method reduces reliance on manual skills, improves production efficiency, and reduces product defect rates caused by improper manual operation.

[0057] In some embodiments, controlling the shape of the pulled-out fiber filament specifically involves rotating the bearing surface 121 according to the twist of the pulled-out filament to ensure that the pulled-out fiber filament does not twist.

[0058] In one possible case, such as Figure 4 As shown, torque sensors (such as photoelectric torque meters, image analysis systems, etc.) are installed at key locations along the fiber drawing path to monitor in real time whether the drawn fiber filaments are twisted. The control system collects data from the torque sensors, processes and analyzes it in real time, and determines the current twist state of the fiber filaments. The control component (such as a PLC or microprocessor) calculates the angle that needs adjustment based on preset process parameters and the real-time monitored torque data. The control component sends precise control commands to the second drive component, instructing it to rotate the second support plate 12 by a specific angle. By rotating the second support plate 12, the direction of force on the fiber filaments during the drawing process is changed, ensuring that unnecessary twisting does not occur.

[0059] In this article, the term "and / or" is merely a description of the relationship between related objects, indicating that there can be three relationships, such as A and / or B. Specifically, it can be understood as: A and B can be included at the same time, A can exist alone, or B can exist alone, and any of the above three situations can be met.

[0060] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A wire drawing auxiliary device, characterized in that, include: A carrier having a bearing surface, the bearing surface having a central hole penetrating the carrier along the thickness direction of the carrier; First driving component; and Multiple extrusion members are spaced apart on the bearing surface along the outer periphery of the central hole, and each extrusion member has an extrusion surface facing the center line of the central hole; The plurality of extruders can be driven by the first driving member to be in a first position or a second position. In the first position, the plurality of extrusion surfaces are close to the center line to form an extrusion space that overlaps with the center hole. The extrusion space is a space with a closed outer periphery, used to accommodate and extrude the composite optical fiber rod so that the fibers of the composite optical fiber rod are closely arranged. In the second position, the plurality of extrusion surfaces are away from the center line.

2. The wire drawing auxiliary device according to claim 1, characterized in that, The extrusion surface is rotatable relative to the bearing surface, and its rotation axis is perpendicular to the thickness direction of the bearing body.

3. The wire drawing auxiliary device according to claim 1, characterized in that, Also includes: The heat insulation base has two mounting surfaces opposite each other, one for fixing the carrier and the other for connecting the wire drawing furnace, and a heat insulation part extending along the thickness direction of the carrier is provided between the two mounting surfaces; The heat insulation base has a hollow area that corresponds to and communicates with the central hole.

4. The wire drawing auxiliary device according to claim 3, characterized in that, The heat insulation part can expand and contract along the thickness direction of the support body.

5. The wire drawing auxiliary device according to claim 1, characterized in that, The carrier includes: A first bearing plate having a first central hole; The second support plate has a second center hole corresponding to the first center hole. The second support plate is stacked on top of the first support plate and is rotatably connected to the first support plate, so that the second support plate can drive the plurality of extrusion members to rotate relative to the first support plate.

6. The wire drawing auxiliary device according to claim 5, characterized in that, Also includes: Control components; The second driving component has its driving end connected to the second carrier plate, and the second driving component is signal-connected to the control component, and can control the rotation angle of the second carrier plate based on the control command of the control component.

7. The wire drawing auxiliary device according to claim 3, characterized in that, Also includes: Third driving component; Multiple clamping elements are disposed on the heat insulation seat, and the multiple clamping elements correspond one-to-one with the multiple extrusion elements in the extension direction of the center line. Each clamping element has a clamping surface facing the center line of the center hole. The plurality of clamping members can be driven by the third driving member to be in a third position or a fourth position. In the third position, the plurality of clamping surfaces are close to the center line to form a clamping space that overlaps with the center hole. In the fourth position, the plurality of clamping surfaces are away from the center line.

8. A wire drawing method based on the wire drawing auxiliary device according to any one of claims 1-7, characterized in that, Includes the following steps: The composite optical fiber rod is suspended on the rod-hanging platform above the drawing furnace; Select and replace the extrusion piece that matches the size of the composite optical fiber rod; The composite optical fiber rod is inserted into the drawing furnace for chemical processing. The cylinder switch is turned on so that the extrusion surface of the extrusion part extends out and presses against the composite optical fiber rod. Before and during the fiber drawing process, the position of the composite fiber rod is adjusted and the shape of the drawn fiber filaments is controlled.

9. The wire drawing method according to claim 8, characterized in that, The control of the shape of the pulled-out fiber filaments specifically refers to: Rotate the bearing surface according to the twist of the pulled filament to ensure that the pulled fiber does not twist.

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