Wire drawing auxiliary device and wire drawing method

Abstract

The invention discloses a wire drawing auxiliary device and a wire drawing method, and relates to the technical field of optical fiber manufacturing and processing. The wire drawing auxiliary device comprises a bearing body which is provided with a bearing surface, and the bearing surface is provided with a center hole penetrating through the bearing body in the thickness direction of the bearing body; a first driving member; the extrusion pieces are arranged on the bearing surface at intervals along the periphery of the center hole, and each extrusion piece is provided with an extrusion surface facing the center line of the center hole; wherein the plurality of extrusion parts can be driven by the first driving part so as to be located at a first position or a second position, under the condition of the first position, the plurality of extrusion surfaces are close to the center line so as to define an extrusion space overlapped with the center hole, and under the condition of the second position, the plurality of extrusion surfaces are far away from the center line.

Description

Technical Field

[0001] The present application relates to the technical field of optical fiber manufacturing and processing, and in particular to a wire drawing auxiliary device and a wire drawing method. Background Art

[0002] Fiber optic image transmission elements are an array material made of tens of millions of micron-sized glass fibers that are regularly arranged and melt-pressed. They can achieve high-fidelity, high-definition and high-resolution transmission of optical images, and have the so-called optical zero-thickness characteristic. The process of preparing this element is very complicated. In order to achieve micron-level precision requirements, ordinary glass fiber filaments need to be arranged into composite optical fiber rods, and then drawn into filaments through a drawing furnace. This process needs to be repeated twice, and then melt-pressed to finally form. In these processes, maintaining the tightness of the arrangement of optical fiber filaments is a key challenge, which directly affects the problem of shear distortion of the product, that is, the transmitted straight line image is misaligned or rotated relative to the ideal state.

[0003] At present, in production, composite optical fiber rods are usually wound manually with materials such as aluminum foil or raw tape to ensure their tightness. However, this method not only relies on the manual skills of the operator, but also has uneven winding force and is easy to loosen, resulting in problems such as cracks, dislocations or voids in the internal fiber filaments. These problems will be magnified in the subsequent melt pressing step, causing the glass fiber filaments to deform or become opaque, further exacerbating shear distortion.

[0004] Therefore, how to provide a wire drawing auxiliary device and a wire drawing method for reducing the shear distortion of composite fibers is a problem that urgently needs to be solved. Summary of the invention

[0005] In order to solve the above technical problems, the embodiments of the present application provide the following technical solutions:

[0006] The first aspect of the present application provides a wire drawing auxiliary device, comprising: a carrier, which has a carrier surface, and the carrier surface is provided with a center hole penetrating the carrier along the thickness direction of the carrier; a first driving member; and a plurality of extrusion members, which are arranged on the carrier surface at intervals along the outer periphery of the center hole, and each extrusion member has an extrusion surface facing the center line of the center hole; wherein the plurality of extrusion members can be driven by the first driving member so that the plurality of extrusion members are in a first position or a second position, and in the case of the first position, the plurality of extrusion surfaces are close to the center line to enclose and form an extrusion space overlapping with the center hole, and in the case of 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 support surface, and the rotation axis is perpendicular to the thickness direction of the support body.

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

[0009] In some embodiments, the wire drawing auxiliary device also includes: an insulation seat, which has two mounting surfaces opposite to each other, one for fixing the carrier and the other for connecting the wire drawing furnace, and an insulation portion extending along the thickness direction of the carrier is provided between the two mounting surfaces; the insulation seat is provided with a hollow area corresponding to and connected to the center hole.

[0010] In some embodiments, the heat insulating portion can be expanded and contracted along the thickness direction of the carrier.

[0011] In some embodiments, the carrier includes: a first carrier plate having a first center hole; a second carrier plate having a second center hole corresponding to the first center hole, the second carrier plate is stacked with 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 multiple extrusion parts to rotate relative to the first carrier plate.

[0012] In some embodiments, the wire drawing auxiliary device also includes: a control component; a second driving member, whose driving end is connected to the second supporting plate, and the second driving member is signal-connected to the control component and can control the rotation angle of the second supporting plate based on the control instruction of the control component.

[0013] In some embodiments, the wire drawing auxiliary device also includes: a third driving member; a plurality of clamping members, which are arranged on a heat-insulating seat, and the plurality of clamping members correspond one-to-one to 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 so that the plurality of clamping members are in a third position or a fourth position, and in the case of 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 case of the fourth position, the plurality of clamping surfaces are away from the center line.

[0014] A second aspect of the present application provides a wire drawing method, comprising the following steps: hanging a composite optical fiber rod on a rod hanging platform above a wire drawing furnace; selecting and replacing an extrusion piece that matches the size of the composite optical fiber rod; extending the composite optical fiber rod into the wire drawing furnace for chemical treatment, turning on the cylinder switch so that the extrusion surface of the extrusion piece extends out and supports the composite optical fiber rod; before and during wire drawing, adjusting the position of the composite fiber rod and controlling the shape of the drawn fiber filament.

[0015] In some embodiments, the shape of the drawn fiber filaments is controlled, specifically by rotating the bearing surface according to the twist of the drawn fiber filaments to ensure that the drawn fiber filaments are not twisted.

[0016] Compared with the prior art, the wire drawing auxiliary device and wire drawing method provided by the present application use multiple extrusions arranged at intervals along the periphery of the center hole, and drive the extrusions close to or away from the center line through a first driving member, so as to ensure the tightness of the winding and solve the problem of looseness caused by uneven manual winding force. This uniform extrusion effect not only improves the internal quality of the product, effectively reduces cracks, dislocations or voids in the internal fiber filaments, but also significantly reduces the shear distortion problem in the subsequent melt pressing step due to the uniformity of the internal structure of the fiber rod, thereby ensuring the shape and light transmittance of the glass fiber filaments. In addition, the mechanized operation of the device reduces the reliance on manual skills, improves production efficiency, and reduces the product defect rate caused by improper manual operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] By reading the detailed description below with reference to the accompanying drawings, the above and other purposes, features and advantages of the exemplary embodiments of the present application will become easy to understand. In the accompanying drawings, several embodiments of the present application are shown in an exemplary and non-limiting manner, and the same or corresponding reference numerals represent the same or corresponding parts, wherein:

[0018] Figure 1 A schematic diagram of the three-dimensional structure of a wire drawing auxiliary device provided in this embodiment is schematically shown;

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

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

[0021] Figure 4 A flowchart schematically shows the steps of a wire drawing method provided in this embodiment.

[0022] Description of Figure Numbers:

[0023] 1. Carrying body; 11. First carrying plate; 12. Second carrying plate; 121. Carrying surface; 13. Center hole; 2. First driving member; 3. Extrusion member; 31. Extrusion surface; 4. Extrusion space; 5. Heat insulation seat; 51. Heat insulation part; 511. Hollow area; 6. Fiber rod to be processed. DETAILED DESCRIPTION

[0024] The exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided in order to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0025] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in this application should have the common meanings understood by technicians in the field to which this application belongs.

[0026] The inventors found that the preparation process of optical fiber image transmission elements is complicated and requires 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 meeting the standards through melt pressing. During the arrangement and drawing process, maintaining the tightness of the optical fiber filaments and preventing shear distortion (i.e., misalignment or rotation of the transmitted image) are the main challenges. In the current method, aluminum foil or raw tape is usually used to manually wrap the composite optical fiber rod to maintain its tightness, but this method is prone to looseness due to uneven winding force, which in turn causes problems such as internal fiber cracks, misalignment or voids. These problems may cause the glass fiber filaments to deform and become opaque during the subsequent melt pressing process, ultimately affecting product quality and causing shear distortion.

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

[0028] Reference Figure 1 -Attached Figure 3 A wire drawing auxiliary device provided in an embodiment of the present application includes: a carrier 1, which has a carrier surface 121, and the carrier surface 121 is provided with a center hole 13 that penetrates the carrier body 1 along the thickness direction of the carrier body 1; a first driving member 2; and a plurality of extrusion members 3, which are arranged on the carrier surface 121 at intervals along the outer periphery of the center hole 13, and each extrusion member 3 has an extrusion surface 31 facing the center line of the center hole 13; wherein the plurality of extrusion members 3 can be driven by the first driving member 2 so that the plurality of extrusion members 3 are in a first position or a second position, and in the case of 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 center hole 13, and in the case of the second position, the plurality of extrusion surfaces 31 are away from the center line.

[0029] In one possible scenario, Figure 1-Figure 3As shown, the carrier 1 provides a stable working platform and the carrier 1 has a flat bearing surface 121. The size and shape of the bearing surface 121 can be set according to actual needs. A center hole 13 is set on the bearing surface 121, and the center hole 13 runs through the entire carrier 1 along the thickness direction of the carrier 1. The purpose of setting the center hole 13 is to allow the fiber rod 6 to be processed (such as a composite fiber rod) to pass through, so that it is not hindered during the wire drawing process. The first drive member 2 is used to control the position conversion of multiple extrusion members 3. The first drive member 2 can be a hydraulic cylinder, a pneumatic piston or an electric motor that can generate linear motion or rotational motion. The first drive member 2 is connected to each extrusion member 3, and the movement of the extrusion member 3 from the first position to the second position is achieved through precise control, and vice versa. A plurality of extrusion members 3 are evenly distributed around the outer periphery of the center hole 13, and these extrusion members 3 can move radially under the action of the first drive member 2. Each extrusion piece 3 is provided with an extrusion surface 31 facing the center line of the center hole 13. The shape of the extrusion surface 31 can be set as needed, such as a rectangular surface, an arc surface, etc. When these extrusion surfaces 31 are close to the fiber rod 6 to be processed, they can be enclosed together to form an extrusion space 4 overlapping the center hole 13. The shape and size of this extrusion space 4 can be adjusted as needed to meet the needs of wire drawing operations of different diameters. The number of extrusion pieces 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 filament, six extrusion pieces 3 can be set, and the six extrusion pieces 3 correspond to the six peripheral surfaces of the hexagonal composite fiber filament.

[0030] When the multiple extrusion members 3 are in the first position, their extrusion surfaces 31 will fit closely together to form an extrusion space 4, and each extrusion surface 31 corresponds to and fits the outer peripheral surface of the fiber rod 6 to be processed one by one. The pressure applied by the extrusion surface 31 can help the fiber rod 6 to be processed to straighten and arrange its fiber filaments neatly, ensuring the consistency and strength of its structure. Through the uniformly distributed pressure, the fiber can be effectively prevented from cracking or relative displacement during the stretching process. By accurately controlling the first driving member 2, the pressure applied by each extrusion member 3 can be adjusted to adapt to different types of fiber materials. For fibers that are more fragile or sensitive to pressure, a lower pressure can be used; for fibers that require higher intensity processing, the pressure can be appropriately increased. When there is no need to apply additional pressure to the fiber rod 6 to be processed, or before replacing the fiber rod 6 to be processed of different specifications, the multiple extrusion members 3 can be moved to the second position by the first driving member 2. At this time, the extrusion surface 31 of each extrusion member 3 is away from the center line, providing enough space for the fiber rod 6 to be processed to avoid any unnecessary contact or deformation.

[0031] The wire drawing auxiliary device and wire drawing method provided by the present application use multiple extrusion members 3 to be spaced along the periphery of the center hole 13, and the first driving member 2 drives the extrusion member 3 to be close to or away from the center line, so as to ensure the tightness of the winding and solve the problem of looseness caused by uneven manual winding force. This uniform extrusion effect not only improves the internal quality of the product, effectively reduces the cracks, dislocations or voids in the internal fiber filaments, but also significantly reduces the shear distortion problem in the subsequent melt pressing step due to the uniformity of the internal structure of the fiber rod, thereby ensuring the shape and light transmittance of the glass fiber filaments. In addition, the mechanized operation of the device reduces the dependence on manual skills, improves production efficiency, and reduces the product defect rate caused by improper manual operation.

[0032] In some embodiments, the pressing surface 31 can rotate relative to the supporting surface 121 , and the rotation axis thereof is perpendicular to the thickness direction of the supporting body 1 .

[0033] In one possible scenario, Figure 1-Figure 3 As shown, the extrusion member 3 may be a roller, and its outer peripheral surface may be an extrusion surface 31. The extrusion member 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 fiber filaments in the fiber rod 6 to be processed.

[0034] In some embodiments, in the first position, the extrusion space 4 enclosed by the plurality of extrusion surfaces 31 close to the center line is a space with a closed periphery.

[0035] In one possible scenario, 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, dislocations and voids in the fiber rod 6 to be processed.

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

[0037] In one possible scenario, Figure 1-Figure 3As shown, the heat-insulating seat 5 has two mounting surfaces arranged opposite to each other, one for fixing the carrier 1 and the other for connecting the wire drawing furnace. The distance between the two mounting surfaces can be adjusted according to actual needs to adapt to equipment of different sizes. A heat-insulating portion 51 extending along the thickness direction of the carrier 1 is provided between the two mounting surfaces, and the heat-insulating portion 51 is made of a high-efficiency heat-insulating material, such as ceramic fiber, aerogel or high-density polystyrene foam. These materials have low thermal conductivity and can significantly reduce the heat transfer to the carrier 1 and the extrusion 3. A hollow area 511 corresponding to the center hole 13 is provided inside the heat-insulating seat 5, and this hollow area 511 allows the fiber rod 6 to be processed to pass through, and can further reduce the temperature conduction by natural convection or forced ventilation. In addition, the hollow area 511 can also be used as a channel for the circulation of cooling medium (such as air, water) to enhance the heat insulation effect. By setting the heat-insulating seat 5, it is possible to prevent the extrusion surface 31 from being deformed due to the influence of high temperature, thereby affecting its extrusion effect on the fiber rod 6 to be processed.

[0038] In some embodiments, the heat insulating portion 51 can be expanded and contracted along the thickness direction of the carrier 1 .

[0039] In a possible case, the heat insulation part 51 may include a plurality of telescopic columns, and the interior of the telescopic column may include an inner column, an outer column, a coil spring, and a stopper. The inner column is the movable part of the telescopic column, one end of which is connected to one of the mounting surfaces, and the other end is connected to the coil spring. The coil spring is arranged around the inner column, and the number of the coil springs may be one or more. The outer cylinder may be a hollow cylinder, which is sleeved and slidably connected to the inner column, and the outer column accommodates the inner column and the coil spring. The stopper is used to limit the maximum sliding distance between the outer column and the inner column to avoid damage caused by excessive stretching or compression of the coil spring. The stopper may be a retaining ring, a nut or other forms of mechanical stoppers. When the temperature of the wire drawing furnace increases, the heat insulation part 51 needs to increase in height to better isolate the heat. At this time, the coil spring will naturally extend due to the lack of external pressure, pushing the inner column and the outer column to slide relative to each other, thereby increasing the overall height of the heat insulation part 51. On the contrary, when the temperature is reduced, or when the thickness of the heat insulation part 51 needs to be reduced, the coil spring can be compressed by externally applied pressure or tension. For example, a pneumatic cylinder, a hydraulic cylinder, or a manual adjustment device may be used to apply pressure to force the inner column to slide relative to the outer column, thereby reducing the height of the insulation 51 .

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

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

[0042] In one possible scenario, Figure 1-Figure 3 As shown, the first carrier plate 11 provides a stable working platform, and the first carrier plate 11 is provided with a first center hole to allow the fiber rod 6 to be processed to pass through. The second carrier plate 12 is located on the first carrier plate 11, and the second carrier plate 12 is also provided with a second center hole aligned with the first center hole to ensure that the fiber can pass through the entire system smoothly. The first carrier plate 11 and the second carrier plate 12 are rotationally connected through appropriate mechanical connections (such as bearings, rotating shafts, etc.), and the two can also be rotationally connected through the cooperation of balls and arc grooves. The balls are embedded in the pre-designed grooves at the bottom of the second carrier plate 12 and cooperate with the arc grooves on the first carrier plate 11. In order to prevent unintentional rotation, the position of the second carrier plate 12 can be fixed by a positioning pin or a locking mechanism when rotation is not required. During the wire drawing process, the angle of the extrusion member 3 relative to the fiber can be adjusted in real time by rotating the second supporting plate 12, thereby preventing the fiber from twisting, allowing the operator to flexibly control the degree of fiber twisting according to specific needs, ensuring that each fiber can achieve the best structure and performance, avoiding the occurrence of cracks, dislocations, voids, and other problems inside the fiber, and reducing the size and frequency of shear distortion.

[0043] In some embodiments, the wire drawing auxiliary device also includes: a control component; a second driving member, whose driving end is connected to the second supporting plate 12, and the second driving member is signal-connected to the control component, and can control the rotation angle of the second supporting plate 12 based on the control instruction of the control component.

[0044] In one possible case, the control component includes but is not limited to a programmable logic controller, a microprocessor, etc., which can receive data from a sensor, process logical operations, and send control instructions to the first drive member 2 and the second drive member. The second drive member is used to drive the second carrier plate 12 to rotate, and can be a stepper motor, a servo motor or other types of motors. The specific selection depends on the required accuracy, speed and torque requirements. During the process of drawing the fiber rod 6 to be processed, the operator can send a control instruction to the second drive member through the control component to rotate the second carrier plate 12 so that the fiber rod 6 to be processed does not twist. Since the device is arranged on the drawing furnace, when the operator manually rotates the second carrier plate 12, there is a risk of scalding. By driving the second carrier plate 12 to rotate by the control component, this automated method effectively avoids the risk of scalding that may occur when the operator manually rotates the second carrier plate 12. In addition, in order to accurately measure whether the fiber rod 6 to be processed has rotated, the device can be provided with a torsion measuring instrument, which can accurately measure whether the limit has twisted.

[0045] In some embodiments, the wire drawing auxiliary device also includes: a third driving member; a plurality of clamping members, which are arranged on the thermal insulation seat 5, and the plurality of clamping members correspond one-to-one to 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 so that the plurality of clamping members are in a third position or a fourth position, and in the case of 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 case of the fourth position, the plurality of clamping surfaces are away from the center line.

[0046] In one possible case, the third driving member is used to drive multiple pressing members to move so that they can switch between the third position (close to the center line) and the fourth position (away from the center line). The third driving member can be a cylinder, a hydraulic cylinder, an electric push rod, etc. The pressing member is arranged on the heat-insulating seat 5, and each pressing member has a pressing surface facing the center line of the center hole 13. The pressing surface of each pressing member is designed to be able to fit the fiber surface closely and provide uniform pressure distribution. The extrusion member 3 and the pressing member form two different pressure control mechanisms. The extrusion member 3 is mainly used to form the initial cylindrical extrusion space 4, and the pressing member can further apply precise pressure when necessary. This multi-stage pressure control enables the fiber rod 6 to be processed to be treated more carefully during the passing process. The pressing members are evenly distributed around the center line, and when they are in the third position (close to the center line), a pressing space overlapping the center hole 13 can be formed. This layout ensures that the pressure can be evenly distributed around the fiber rod 6 to be processed, reducing the situation of local overpressure or underpressure, thereby avoiding the risk of cracks or dislocation inside the fiber rod 6 to be processed. The position of the clamping member can be flexibly adjusted according to actual needs through the third driving member. For example, during the wire drawing process, if it is detected that the fiber rod 6 to be processed is twisted or misaligned, the control system can send a command to the third driving member to quickly move the clamping member to the third position and immediately correct the fiber rod 6 to be processed. The design of introducing multiple clamping members and the third driving member brings higher flexibility and more precise control capabilities to the wire drawing auxiliary device. By accurately controlling the position of the clamping member, the fiber rod 6 to be processed can be further straightened during the wire drawing process to ensure the internal structure of the composite optical fiber rod, and can further avoid the occurrence of fiber cracks, dislocations, voids, etc. inside the fiber rod 6 to be processed, thereby reducing the size and frequency of shear distortion.

[0047] The second aspect of the present application provides a wire drawing method, comprising the following steps: hanging a composite optical fiber rod on a rod hanging platform above a wire drawing furnace; selecting and replacing an extrusion piece 3 that matches the size of the composite optical fiber rod; extending the composite optical fiber rod into the wire drawing furnace for chemical treatment, turning on the cylinder switch, so that the extrusion surface 31 of the extrusion piece 3 extends out and supports the composite optical fiber rod; before and during wire drawing, adjusting the position of the composite fiber rod and controlling the shape of the drawn fiber filament.

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

[0049] In one possible scenario, Figure 4As shown, in accordance with the process requirements, the fiber filaments are arranged into a hexagonal composite optical fiber rod to ensure that the internal structure of the cross-section at both ends is compact and not misaligned. Afterwards, copper wire is used to firmly bind the two ends of the composite optical fiber rod to prevent the fibers from loosening or misaligning. Then a cotton thread is used to tie the rod tightly in the middle of the rod to ensure that the fiber filaments on the surface of the rod are not warped or bent, and there are no misalignments and pores inside. The prepared composite optical fiber rod is hung on the rod hanging platform above the drawing furnace to ensure that the suspension is stable for subsequent operations.

[0050] S2, selecting and replacing an extrusion piece 3 that matches the size of the composite optical fiber rod;

[0051] In one possible scenario, Figure 4 As shown, according to the actual size of the fiber rod 6 to be processed, select appropriate extrusion parts 3 and pressing parts and replace them to ensure that the width of the extrusion surface 31 and the pressing 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 to avoid affecting the normal operation of the equipment, provide uniform pressure distribution, and avoid local overpressure or underpressure.

[0052] S3, inserting the composite optical fiber rod into the drawing furnace for chemical treatment, turning on the cylinder switch, so that the extrusion surface 31 of the extrusion member 3 extends out and supports the composite optical fiber rod;

[0053] In one possible scenario, Figure 4 As shown, slowly extend the composite optical fiber rod into the drawing furnace to start normal chemical processing. Control the extension speed to avoid breaking or deforming the fiber rod due to excessive speed. Open the cylinder, that is, open the first drive member 2, drive the extrusion surface 31 of the extrusion member 3 to extend, so that it fits tightly and supports the fiber rod 6 to be processed, forming a stable extrusion space 4, applying uniform pressure to the fiber rod to help straighten and arrange the fiber filaments. In addition, ensure that the cylinder moves smoothly to avoid damage to the fiber rod caused by excessive impact force. Adjust the cylinder pressure and optimize the extrusion force according to the actual situation to ensure that the fiber rod is straightened and compressed under controlled conditions.

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

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

[0056] The wire drawing method provided by the present application adopts a plurality of extrusion members 3 arranged at intervals along the periphery of the center hole 13, and drives the extrusion members 3 to approach or move away from the center line through the first driving member 2, so as to ensure the tightness of the winding and solve the problem of looseness caused by uneven manual winding force. This uniform extrusion effect not only improves the internal quality of the product, effectively reduces the cracks, dislocations or voids of the internal fiber filaments, but also significantly reduces the shear distortion problem in the subsequent melt pressing step due to the uniformity of the internal structure of the fiber rod, thereby ensuring the shape and light transmittance of the glass fiber filaments. In addition, the mechanized operation of the method reduces the dependence on manual skills, improves production efficiency, and reduces the product defect rate caused by improper manual operation.

[0057] In some embodiments, the shape of the drawn fiber filaments is controlled, specifically by rotating the bearing surface 121 according to the twist of the drawn fiber filaments to ensure that the drawn fiber filaments are not twisted.

[0058] In one possible scenario, Figure 4 As shown, a torsion sensor (such as a photoelectric torsion meter, an image analysis system, etc.) is installed at a key position of the drawing path to monitor in real time whether the drawn fiber filament is twisted. The control system collects data from the torsion sensor, processes and analyzes it in real time to determine the torsion state of the current fiber filament. The control component (such as a PLC or a microprocessor) calculates the angle that needs to be adjusted based on the preset process parameters and the torsion data monitored in real time. The control component sends a precise control instruction to the second drive member, instructing it to drive the second carrier plate 12 to rotate a specific angle. By rotating the second carrier plate 12, the force direction of the fiber filament during the drawing process is changed to ensure that it does not twist unnecessarily.

[0059] The term "and / or" in this article is merely a description of the association relationship of associated objects, indicating that three relationships may exist, for example, A and / or B, which is specifically understood as: A and B may be included at the same time, A may exist alone, or B may exist alone, and any of the above three situations may exist.

[0060] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A wire drawing auxiliary device, characterized in that: include: A carrier having a carrier surface, wherein the carrier surface is provided with a central hole penetrating the carrier along a thickness direction of the carrier; a first driving member; and A plurality of extrusion pieces are arranged on the bearing surface at intervals along the outer periphery of the central hole, and each of the extrusion pieces has an extrusion surface facing the center line of the central hole; Wherein, the multiple extrusion members can be driven by the first driving member so that the multiple extrusion members are in a first position or a second position. In the first position, the multiple extrusion surfaces are close to the center line to enclose and form an extrusion space overlapping with the center hole. In the second position, the multiple extrusion surfaces are away from the center line.

2. The wire drawing auxiliary device according to claim 1, characterized in that: The extrusion surface can rotate 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: In the case of the first position, the extrusion space enclosed by the plurality of extrusion surfaces close to the center line is a space with a closed periphery.

4. The wire drawing auxiliary device according to claim 1, characterized in that: Also includes: A heat-insulating seat, which is provided with two mounting surfaces opposite to each other, one for fixing the carrier and the other for connecting the wire drawing furnace, and a heat-insulating portion extending along the thickness direction of the carrier is provided between the two mounting surfaces; The heat insulation seat is provided with a hollow area corresponding to and connected with the central hole.

5. The wire drawing auxiliary device according to claim 4, characterized in that: The heat insulating portion can be expanded and contracted along a thickness direction of the carrier.

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

7. The wire drawing auxiliary device according to claim 6, characterized in that: Also includes: Control components; A second driving member, whose driving end is connected to the second supporting plate, and the second driving member is connected to the control component signal, and can control the rotation angle of the second supporting plate based on the control instruction of the control component.

8. The wire drawing auxiliary device according to claim 4, characterized in that: Also includes: a third driving member; A plurality of pressing members are arranged on the heat-insulating seat, and the plurality of pressing members correspond to the plurality of extrusion members in a one-to-one manner in the extending direction of the center line, and each of the pressing members has a pressing surface facing the center line of the center hole; Among them, multiple clamping members can be driven by the third driving member so that the multiple clamping members are in the third position or the fourth position. In the case of the third position, the multiple clamping surfaces are close to the center line to enclose and form a clamping space overlapping with the center hole. In the case of the fourth position, the multiple clamping surfaces are away from the center line.

9. A wire drawing method based on the wire drawing auxiliary device according to any one of claims 1 to 8, characterized in that: The steps include: Hanging the composite optical fiber rod on the rod hanging platform above the drawing furnace; Select and replace the extrusion that matches the size of the composite optical fiber rod; The composite optical fiber rod is inserted into the drawing furnace for chemical treatment, and the cylinder switch is turned on to make the extrusion surface of the extrusion piece extend out and support the composite optical fiber rod; Before and during wire drawing, the position of the composite fiber rod is adjusted and the shape of the drawn fiber is controlled.

10. The wire drawing method according to claim 9, characterized in that: The controlling of the morphology of the drawn fiber filaments is specifically as follows: The bearing surface is rotated according to the twist of the drawn filament to ensure that the drawn fiber filament does not twist.

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