A multi-glass fiber bundle drawing apparatus capable of setting the outer diameter of glass fibers

Abstract

The application provides a multi-glass fiber bundle drawing equipment capable of setting the outer diameter of glass fibers, and belongs to the technical field of glass fiber bundle drawing. The multi-glass fiber bundle drawing equipment capable of setting the outer diameter of glass fibers comprises a drawing tower frame, a forming mechanism is fixedly installed at the middle part of the front side of the outer wall of the drawing tower frame, the forming mechanism comprises an array type drawing furnace and a mold fixing plate located below the array type drawing furnace, a plurality of leakage holes with axes extending in the vertical direction are formed in the top of the array type drawing furnace, the plurality of leakage holes are uniformly distributed in a rectangular shape and all penetrate through the array type drawing furnace, a plurality of installation holes with axes extending in the vertical direction are formed in the mold fixing plate, the plurality of installation holes are coaxially arranged with the plurality of leakage holes respectively, a heating sleeve is fixedly installed at the bottom of the inner wall of the installation hole, the inner hole of the heating sleeve is funnel-shaped, and a drawing mold is detachably installed in the inner hole of the heating sleeve. The problem of excessively large raw wire included angle in the prior art during multi-beam drawing is avoided.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of glass fiber bundle drawing, and particularly relates to a multi-glass fiber bundle drawing equipment capable of setting the outer diameter of glass fibers. BACKGROUND

[0002] There are three kinds of multi-glass fiber bundle drawing methods at present: rod drawing method, melt drawing method and sol-gel method. The rod drawing method is a method of drawing glass fibers by heating and melting glass rods. The existing rod drawing method generally adopts a single row drawing method. When the number of single drawing holes needs to be increased, the number of quartz glass rods increases to both sides, which leads to a too large included angle of the quartz glass fiber filaments on both sides, which is not conducive to drawing operation and has low production efficiency.

[0003] A double-row drawing device and a forming method of quartz glass fibers are disclosed in a Chinese patent with the authorization announcement number CN113480164B. The double-row drawing device includes a push rod assembly, a forming assembly and a bundle assembly. The push rod assembly includes a fixed plate and two clamping rod plates, which are spaced apart along the transverse direction and are respectively connected to the fixed plate. Both clamping rod plates are provided with clamping rod holes extending along the longitudinal direction. The forming assembly is arranged on the side of the clamping rod plate close to the clamping rod hole, and the forming assembly includes two groups of forming units.

[0004] The existing multi-glass fiber bundle drawing equipment adopts a double-row drawing method for glass fiber bundle drawing operation. However, as the number of drawing holes increases, the included angle of the quartz glass fiber filaments on both sides will be too large, which is not conducive to drawing operation. In addition, when processing quartz glass rods of different diameters or materials, different specifications of the bushing and the drawing die need to be replaced. However, the existing equipment is relatively troublesome when replacing these components, resulting in low production efficiency and flexibility of the device. SUMMARY

[0005] The purpose of the present application is to provide a multi-glass fiber bundle drawing equipment capable of setting the outer diameter of glass fibers, which aims to solve the problem of the existing technology that it is relatively troublesome to replace bushings and drawing dies of different specifications.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical solution: a multi-glass fiber bundle drawing equipment capable of setting the outer diameter of glass fibers, including a drawing tower, a forming mechanism is fixedly installed on the outer wall of the front side of the drawing tower, and a rod feeding mechanism is installed on the top of the outer wall of the front side of the drawing tower.

[0007] The forming mechanism includes an array-type wire drawing furnace, a mold fixing plate located below the array-type wire drawing furnace, and a connecting component for fixing the mold fixing plate to the array-type wire drawing furnace. The top of the array-type wire drawing furnace has multiple holes with axes extending vertically. The multiple holes are evenly distributed in a rectangular shape and all penetrate the array-type wire drawing furnace. The mold fixing plate has multiple mounting holes with axes extending vertically. The multiple mounting holes are coaxially arranged with the multiple holes. A heating sleeve is fixedly installed at the bottom of the inner wall of the mounting hole. The inner hole of the heating sleeve is funnel-shaped. A stretching mold is detachably installed in the inner hole of the heating sleeve, and the outer wall of the stretching mold is completely fitted with the inner hole of the heating sleeve.

[0008] The beneficial effects of this invention are that, by employing an array-type drawing furnace and rectangularly evenly distributed perforations, glass fiber filaments can be drawn in a rectangular array, effectively avoiding the problem of excessively large filament angles when drawing multiple bundles in the prior art. This allows multiple bundles of glass fibers to be drawn in a more compact and regular array, thereby improving the stability and efficiency of the drawing operation. Furthermore, the removable drawing die within the heating sleeve enables rapid die replacement during the production of glass fibers of different diameters or materials. Changing to different specifications of drawing dies allows for the drawing of glass fibers with different outer diameters, significantly improving the production flexibility and maintenance convenience of the equipment.

[0009] The top of the stretching die has a wire-drawing hole, which is funnel-shaped. The heating sleeve is electrically heated and connected to an external power source.

[0010] The effect is that by designing the drawing hole as a funnel, it can smoothly guide and converge the molten glass, causing it to gradually decrease in diameter as it passes through. This allows for precise control of the initial shape of the glass fiber, reduces turbulence and uneven flow of the molten glass when it enters the drawing area, effectively avoids defects such as bubbles or diameter fluctuations, and ensures that the drawn glass fiber has good roundness and uniform outer diameter.

[0011] The connecting assembly includes fixing blocks and fixing pins fixed at the bottom edge of the array-type wire drawing furnace. There are at least two fixing blocks and they are evenly distributed along the circumference of the array-type wire drawing furnace. Connecting blocks are symmetrically installed at both ends of the fixing blocks. The connecting blocks are fixedly installed on the side wall of the mold fixing plate. The fixing blocks have a through-hole at the end near the connecting block. The connecting blocks have a connecting hole that is coaxial with the fixing hole and passes through them. The number of fixing pins is the same as the number of fixing blocks. Multiple fixing pins are inserted into the fixing holes of multiple fixing blocks, and the two ends of the fixing pins pass through the connecting holes on the connecting blocks located at both ends of the fixing blocks.

[0012] The effect is that the fixing blocks are evenly distributed along the circumference of the array-type wire drawing furnace, providing multi-point and uniform support for the die fixing plate. Combined with the insertion of fixing pins, this design ensures the strength and stability of the connection, effectively resisting vibrations and stresses that may occur during wire drawing, and preventing displacement or loosening of the die fixing plate. At the same time, the coaxial arrangement of the fixing holes and connecting holes, along with the precise insertion of the fixing pins, ensures that the die fixing plate is accurately aligned with the array-type wire drawing furnace during installation. The use of fixing pin insertion makes the installation and removal of the die fixing plate extremely simple and quick, requiring no complex tools, greatly reducing the time needed to replace drawing dies or perform equipment maintenance, and significantly improving the operating efficiency and maintainability of the equipment.

[0013] A cooling plate is installed at the bottom of the mold fixing plate, and a cooling sleeve is fixedly installed at the top of the cooling plate. The axis of the cooling sleeve extends vertically, and the number of cooling sleeves is the same as the number of mounting holes. Multiple cooling sleeves are coaxially arranged with multiple mounting holes and all penetrate the cooling plate. A cooling channel is opened inside the cooling plate, and both ends of the cooling channel penetrate the side wall of the cooling plate. Multiple cooling sleeves are located in the cooling channel.

[0014] The bottom of the cooling plate has through holes at the four corners, with the axis extending vertically and penetrating the cooling plate. A connecting bolt coaxial with the through hole is slidably fitted inside the through hole. The top of the connecting bolt passes through the array-type wire drawing furnace and is threadedly connected to it.

[0015] The effect is that the cooling plate, through its bottom through-hole, engages with connecting bolts, ultimately achieving a threaded connection via the connecting bolts and the array-type wire drawing furnace. This connection method greatly enhances the firmness of the cooling plate, effectively preventing displacement or loosening due to vibration or thermal expansion and contraction during equipment operation. This ensures the stability and uniformity of the cooling effect of the cooling sleeve and cooling channels on the drawing die. Simultaneously, this detachable threaded connection greatly simplifies the installation, disassembly, and maintenance process of the cooling plate, improving the overall maintainability and operational efficiency of the equipment.

[0016] The top front side of the outer wall of the wire drawing tower has a transmission groove extending vertically, and the bottom rear side of the outer wall of the wire drawing tower has an installation groove extending vertically. The top of the installation groove is connected to the bottom of the transmission groove. The bar feeding mechanism includes a drive component installed in the installation groove, a transmission block that slides vertically within the transmission groove, and a bar feeding platform located directly above the forming mechanism. One end of the transmission block extends out of the transmission groove and is fixedly connected to the rear side wall of the bar feeding platform. The drive component is connected to the transmission block for driving the transmission block to slide along the transmission groove.

[0017] The driving component is an electric telescopic rod. The fixed end of the electric telescopic rod is fixedly installed at the bottom of the mounting groove. The telescopic end of the electric telescopic rod extends into the transmission groove and is fixedly connected to the bottom of the transmission block. A rod feeding chuck is fixedly installed at the bottom of the rod feeding platform. The number of rod feeding chucks is the same as the number of leakage holes. Multiple rod feeding chucks correspond to multiple leakage holes respectively.

[0018] The array-type wire drawing furnace has heating holes with the axis extending vertically inside. The number of heating holes is the same as the number of drain holes. Multiple heating holes are coaxially arranged with multiple drain holes. Heating wires are installed in the heating holes and extend in a spiral shape along the axis of the heating holes.

[0019] A bundle combiner is fixedly installed on the front side of the outer wall of the wire drawing tower, located directly below the forming mechanism. The top of the bundle combiner has a bundle combiner hole that passes through the bundle combiner. The bundle combiner has a double-opposite conical structure.

[0020] Its effect is that the bundle combiner has a double-top conical structure bundle combiner hole inside. During the drawing process, when the glass fiber bundle enters / exits the bundle combiner at a certain angle due to shaking or collimation deviation, this structure can ensure that the glass fiber bundle will not be damaged by friction with the inlet / outlet. It avoids stress concentration or breakage of the fiber due to sudden geometric changes during the convergence process, thereby ensuring the integrity and uniformity of the glass fiber bundle.

[0021] A fiber optic take-up machine is installed on the front side of the outer wall of the fiber drawing tower, located below the bundler. The fiber optic take-up machine includes a drive shaft that is rotatably installed on the front side of the outer wall of the fiber drawing tower. The axis of the drive shaft extends along the front-rear direction of the fiber drawing tower. A take-up wheel that is coaxially arranged with the drive shaft is sleeved on the outer wall of the drive shaft.

[0022] Compared with the prior art, the beneficial effects of the present invention are:

[0023] Employing an array-type drawing furnace and rectangularly evenly distributed perforations, glass fiber filaments can be drawn in a rectangular array, effectively avoiding the problem of excessively large filament angles when drawing multiple bundles in existing technologies. This allows multiple bundles of glass fibers to be drawn in a more compact and regular array, thereby improving the stability and efficiency of the drawing operation. Furthermore, the removable drawing dies within the heating sleeve enable rapid die replacement for the production of glass fibers of different diameters or materials. Changing to different specifications of drawing dies allows for the drawing of glass fibers with different outer diameters, significantly improving the equipment's production flexibility and ease of maintenance. Attached Figure Description

[0024] Figure 1 This is a three-dimensional structural diagram of the fiber bundle drawing device in this invention;

[0025] Figure 2 This is a schematic diagram of the main structure of the fiber bundle drawing device in this invention;

[0026] Figure 3 This is a side cross-sectional view of the fiber bundle drawing device in this invention;

[0027] Figure 4 This is a three-dimensional structural diagram of the molding mechanism in this invention;

[0028] Figure 5 This is a schematic diagram of the main cross-sectional structure of the array-type wire drawing furnace in this invention;

[0029] Figure 6 This is a schematic diagram of the front cross-sectional structure of the mold array in this invention;

[0030] Figure 7 This is a schematic diagram of the main sectional view of the cooling plate in this invention;

[0031] Figure 8 This is a top cross-sectional view of the cooling plate in this invention;

[0032] Figure 9 This is a schematic diagram of the front cross-sectional structure of the beam combiner in this invention.

[0033] In the diagram: 1. Wire drawing tower; 11. Transmission groove; 12. Mounting groove; 2. Forming mechanism; 21. Array-type wire drawing furnace; 211. Leakage hole; 212. Heating hole; 213. Heating wire; 22. Die fixing plate; 221. Mounting hole; 222. Heating sleeve; 223. Drawing die; 2231. Wire drawing hole; 23. Cooling plate; 231. Cooling sleeve; 232. Cooling channel; 233. Through hole; 24. Connecting assembly; 241. Fixing block; 2411. Fixing hole; 242. Connecting block; 2421. Connecting hole; 243. Fixing pin; 25. Connecting bolt; 3. Rod feeding mechanism; 31. Driving component; 32. Transmission block; 33. Rod feeding platform; 331. Rod feeding chuck; 4. Bundle combiner; 41. Bundle combining hole; 5. Fiber optic take-up machine; 51. Drive shaft; 52. Take-up reel. Detailed Implementation

[0034] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0035] Please see Figures 1-9 The present invention provides the following technical solution: a multi-glass fiber bundle drawing device with settable glass fiber outer diameter, including a drawing tower 1, a forming mechanism 2, a rod feeding mechanism 3, a bundle combiner 4 and an optical fiber take-up machine 5, wherein the rod feeding mechanism 3, the forming mechanism 2, the bundle combiner 4 and the optical fiber take-up machine 5 are arranged sequentially from top to bottom on the drawing tower 1.

[0036] refer to Figures 1-3As shown, the wire drawing tower 1 is the main support structure of the equipment. It is used to support and fix the various functional components required during the wire drawing process, thereby ensuring the stability and structural integrity of the equipment during operation. A vertically extending transmission groove 11 is formed on the top of the front side of the outer wall of the wire drawing tower 1, and a similarly vertically extending mounting groove 12 is formed on the bottom of the rear side of the outer wall. The top of the mounting groove 12 is connected to the bottom of the transmission groove 11. The transmission groove 11 and the mounting groove 12 are used to install the bar feeding mechanism 3.

[0037] refer to Figure 1 and Figure 4 As shown, the main function of the forming mechanism 2 is to heat and melt the glass rod and draw it into glass fiber filaments. The forming mechanism 2 consists of an array-type drawing furnace 21, a mold fixing plate 22, and a cooling plate 23. The array-type drawing furnace 21 is fixedly installed in the middle of the front side of the outer wall of the drawing tower 1; the mold fixing plate 22 and the cooling plate 23 are sequentially installed at the bottom of the array-type drawing furnace 21, and the two are detachably installed through the connecting component 24.

[0038] refer to Figure 5 As shown, the array-type glass drawing furnace 21 is a device for heating glass rods to melt them, and its design allows for the simultaneous heating of multiple glass rods. The top of the array-type glass drawing furnace 21 has multiple perforations 211, all of which extend vertically. The perforations 211 are rectangularly and uniformly distributed, and all penetrate the array-type glass drawing furnace 21. The shape and distribution of the perforations 211 are designed to ensure that the molten glass flows out uniformly and stably, thereby forming a regular array of glass fiber bundles.

[0039] The array-type wire drawing furnace 21 has heating holes 212 inside, and the axis of the heating holes 212 also extends vertically. The number of heating holes 212 is the same as that of the drain holes 211, and multiple heating holes 212 are arranged coaxially with multiple drain holes 211. Heating wires 213, which extend in a spiral shape along their axis, are installed in the heating holes 212. The heating wires 213 can be silicon carbide rods or electric heating wires.

[0040] refer to Figure 6 As shown, a heating sleeve 222 is fixedly installed on the bottom of the inner wall of the mounting hole 221. The mounting hole 221 can be designed as a cylinder, and the heating sleeve 222 is fixed in the mounting hole 221 by press-fitting or welding.

[0041] The heating sleeve 222 is electrically heated and connected to an external power source via an electrical connection. The inner bore of the heating sleeve 222 is funnel-shaped, which helps guide the molten glass into the drawing die 223, ensuring smooth glass flow. The main function of the heating sleeve 222 is to provide additional heating or insulation for the drawing die 223, ensuring the temperature of the molten glass stabilizes before entering the die, and also assisting in fixing the drawing die 223.

[0042] A drawing die 223 is detachably installed in the inner hole of the heating sleeve 222, and the outer wall of the drawing die 223 is completely fitted into the inner hole of the heating sleeve 222. A drawing hole 2231, also funnel-shaped, is provided at the top of the drawing die 223. The drawing die 223 is a key component determining the outer diameter of the glass fiber; it draws the molten glass into glass fibers of a specific diameter through the internal drawing hole 2231. The drawing die 223 features a detachable design, allowing for quick die replacement when producing glass fibers of different diameters or materials, thus adapting to the production needs of glass fibers of different diameters and significantly improving the production flexibility and maintenance convenience of the equipment.

[0043] refer to Figure 7 and Figure 8 As shown, a cooling plate 23 is installed at the bottom of a mold fixing plate 22, and a cooling sleeve 231 is fixedly installed on its top. The axis of the cooling sleeve 231 extends vertically, and its number is consistent with the number of mounting holes 221. Multiple cooling sleeves 231 are arranged coaxially with multiple mounting holes 221, and all penetrate the cooling plate 23.

[0044] The cooling plate 23 has a cooling channel 232 inside, with both ends of the cooling channel 232 penetrating the sidewall of the cooling plate 23. Multiple cooling sleeves 231 are located within the cooling channel 232. The cooling plate 23 is usually made of a metal material with good thermal conductivity, such as copper, aluminum, or their alloys. Its main function is to serve as the main carrier of the cooling system, provide a mounting base for the cooling sleeves 231, and form the cooling channel 232 inside, thereby achieving indirect cooling of the glass fiber.

[0045] The cooling sleeve 231 is a component that directly contacts or is in close proximity to the drawn glass fiber. Its axis extends vertically, aligning with the drawing direction of the glass fiber. The number of cooling sleeves 231 is the same as the number of mounting holes 221, ensuring that each drawn glass fiber can pass through a corresponding cooling sleeve 231. These cooling sleeves 231 are arranged coaxially with the mounting holes 221, ensuring that the glass fiber can pass smoothly and be precisely guided during the drawing process.

[0046] Cooling sleeve 231 is typically made of wear-resistant, thermally conductive materials, such as stainless steel or ceramic, to withstand high temperatures and friction. The cooling channels 232 extend through the side walls of the cooling plate 23 at both ends, facilitating connection to an external coolant circulation system for the entry and exit of the cooling medium. The cooling medium can be water, oil, or air, which circulates within the cooling channels 232, carrying away heat from the cooling sleeve 231 and its surrounding area.

[0047] Through holes 233 are provided at the four corners of the bottom of the cooling plate 23. The axis of the through holes 233 extends vertically and penetrates the cooling plate 23. A connecting bolt 25, coaxial with the through hole 233, is slidably fitted inside the through hole 233. The top of the connecting bolt 25 penetrates the array-type wire drawing furnace 21 and is threadedly connected to the array-type wire drawing furnace 21. Through the threaded connection, the cooling plate 23 can be firmly fixed to the array-type wire drawing furnace 21, ensuring that it will not shift during the wire drawing process. At the same time, the threaded connection also makes the disassembly and reinstallation of the cooling plate 23 convenient.

[0048] refer to Figures 4-6 As shown, the connecting assembly 24 is used to reliably connect the mold fixing plate 22 to the array-type wire drawing furnace 21. The design of this assembly needs to take into account both the connection strength under high temperature environment and the ease of disassembly, so as to facilitate the replacement and maintenance of the mold.

[0049] The connecting assembly 24 includes fixing blocks 241 and fixing pins 243 fixed at the bottom edge of the array-type wire drawing furnace 21. There are at least two fixing blocks 241, evenly distributed circumferentially along the array-type wire drawing furnace 21. Connecting blocks 242 are symmetrically arranged at both ends of the fixing blocks 241, and the connecting blocks 242 are fixedly mounted on the sidewall of the mold fixing plate 22. The fixing blocks 241 have a through-hole 2411 at the end near the connecting block 242, and the connecting blocks 242 have a through-hole 2421 coaxial with the fixing hole 2411. The number of fixing pins 243 is the same as the number of fixing blocks 241, with multiple fixing pins 243 inserted into the fixing holes 2411 of multiple fixing blocks 241, and both ends of the fixing pins 243 passing through the connecting holes 2421 on the connecting blocks 242 located at both ends of the fixing blocks 241.

[0050] refer to Figure 1 and Figure 3 As shown, the bar feeding mechanism 3 includes a drive member 31 installed in the mounting groove 12, a transmission block 32 slidably sleeved in the transmission groove 11 in the vertical direction, and a bar feeding platform 33 located directly above the forming mechanism 2. One end of the transmission block 32 extends out of the transmission groove 11 and is fixedly connected to the rear side wall of the bar feeding platform 33. The drive member 31 is drively connected to the transmission block 32 and is used to drive the transmission block 32 to slide along the transmission groove 11.

[0051] The drive component 31 can be in the form of a lead screw motor, a gear and rack mechanism, a hydraulic / pneumatic cylinder, or an electric telescopic rod. In this embodiment, the drive component 31 is an electric telescopic rod, with its fixed end fixedly installed at the bottom of the mounting groove 12, and its telescopic end extending into the transmission groove 11 and fixedly connected to the bottom of the transmission block 32.

[0052] A glass rod feeding platform 33 has a glass rod feeding chuck 331 fixedly installed at its bottom. The number of glass rod feeding chucks 331 is the same as the number of leakage holes 211, with each glass rod feeding chuck 331 corresponding to one of the multiple leakage holes 211. The transmission groove 11 provides a precise vertical movement track for the transmission block 32, ensuring that the glass rod feeding platform 33 remains stable during ascent or descent, avoiding lateral swaying, and thus ensuring that the glass rod can be accurately aligned with the leakage hole 211 below. The transmission groove 11 can be a groove with a U-shaped or T-shaped cross-section, and its inner wall is precision machined to reduce friction and improve movement accuracy. The glass rod feeding chuck 331 is a device used to clamp or fix the glass rod, and usually has an adjustable clamping force or clamping range to accommodate glass rods of different diameters. The glass rod feeding chuck 331 can adopt various structures, such as spring clamps, pneumatic clamps, hydraulic clamps, or mechanical threaded clamps, and its material is usually selected to be high-temperature resistant and wear-resistant to adapt to the environment during the drawing process. The inside of the chuck can be designed with anti-slip textures or soft pads to ensure stable clamping of the glass rod without damaging its surface.

[0053] The mounting slot 12 provides a concealed and protected mounting location for the drive component 31, and through its communication with the transmission slot 11, it allows the drive component 31 to be easily connected to the transmission block 32 for transmission. The mounting slot 12 can be a rectangular or square internal cavity, and its dimensions are designed according to the type and size of the selected drive component 31.

[0054] refer to Figure 1 and Figure 9 As shown, the bundler 4 is a device used to gather multiple independent glass fibers into a bundle. Its main function is to guide and gather the multiple glass fibers drawn from the forming mechanism 2, so that the glass fibers gradually transform from a dispersed state into a tightly arranged bundle structure. The bundler 4 is fixedly installed on the front side of the outer wall of the drawing tower 1 and is located directly below the forming mechanism 2. A bundle-gathering hole 41 is opened at the top of the bundler 4, and the bundle-gathering hole 41 passes through the bundler 4. The bundler 4 adopts a double-aperture conical structure. The internal material of the bundler 4 is brass. Brass has the characteristic of low hardness, which can prevent the inner cavity of the bundler 4 from rubbing against or breaking the glass fibers. The double-aperture conical structure adopted by the bundler 4 ensures that during the drawing process, when the glass fiber bundle enters / exits the bundler 4 at a certain angle due to vibration or collimation deviation, the glass fiber bundle will not be damaged by friction with the inlet / outlet.

[0055] refer to Figure 1 and Figure 3As shown, the fiber optic take-up machine 5 is a device used for continuously winding up drawn and bundled glass fiber bundles. The fiber optic take-up machine 5 is installed on the front side of the outer wall of the drawing tower 1 and located below the bundler 4. The fiber optic take-up machine 5 includes a drive shaft 51 rotatably mounted on the front side of the outer wall of the drawing tower 1. The axis of the drive shaft 51 extends along the front-rear direction of the drawing tower 1, and a take-up wheel 52 is coaxially sleeved on the outer wall of the drive shaft 51. The drive shaft 51 is driven by an external drive motor, and the drive motor and the drive shaft 51 are connected by a reduction gear.

[0056] The fiber optic take-up machine 5 can also be equipped with a tension control system and a guiding mechanism. The tension control system, such as using a floating roller, a swing arm sensor, or an electronic tension controller, can monitor and adjust the take-up tension in real time to adapt to minute changes in the drawing speed, avoiding quality problems caused by excessively loose or tight fiber bundles. The guiding mechanism, such as a reciprocating wire guide, ensures that the fiber bundle is evenly distributed across the entire width of the take-up roller 52, preventing localized accumulation or uneven winding.

[0057] The implementation principle of this invention is as follows: First, the operator places multiple glass rods on the feeding platform 33 of the feeding mechanism 3, and clamps and fixes the glass rods with multiple feeding chucks 331. The drive unit 31 is activated, causing it to drive the feeding platform 33 and the glass rods to descend via the transmission block 32. At this time, the bottom ends of the multiple glass rods extend into multiple drain holes 211 on the array-type drawing furnace 21. After the glass rods enter the array-type drawing furnace 21, the spiral heating wires 213 installed in the heating holes 212 inside the furnace preheat and melt the glass rods. The molten glass then enters the drawing hole 2231 on the drawing die 223 in the die fixing plate 22 located below it through the drain hole 211. At this time, the heating sleeve 222 uses electric heating to heat the drawing die 223 and the molten glass inside it, precisely controlling the temperature of the molten glass to ensure that it is in the optimal drawing state. At this time, the molten glass is drawn into fine glass fibers through the drawing hole 2231. After the glass fibers are drawn out from the stretching die 223, they immediately enter the cooling sleeve 231 on the cooling plate 23 installed at the bottom of the die fixing plate 22. The cooling medium circulates in the cooling channel 232, rapidly cooling the glass fibers passing through the cooling sleeve 231 to ensure the forming quality and strength of the glass fibers. The cooled glass fibers continue to move downwards and enter the bundling hole 41 on the bundler 4 located directly below the forming mechanism 2. The bundling hole 41 can effectively gather multiple independent glass fibers into a bundle, preventing fiber tangling and preparing for subsequent take-up. Finally, the bundled glass fiber bundle is collected by the fiber take-up machine 5 located below the bundler 4. The drive shaft 51 of the fiber take-up machine 5 is rotatably mounted on the front side of the outer wall of the drawing tower 1, and a take-up wheel 52 is sleeved on the outer wall of the drive shaft 51. The glass fiber bundle is evenly wound on the take-up wheel 52, completing the entire drawing process.

[0058] When it is necessary to produce glass fibers with different outer diameters, the operator first removes the connecting bolts 25, which allows the cooling plate 23 to be separated from the mold fixing plate 22. Then, the fixing pin 243 is pulled out from the fixing hole 2411 on the fixing block 241 and the connecting hole 2421 on the connecting block 242, so that the mold fixing plate 22 can be removed from the array-type drawing furnace 21. Finally, the stretching die 223 that needs to be replaced is taken out from the mounting hole 221 on the top of the mold fixing plate 22, and the new stretching die 223 is reinstalled into the mounting hole 221. Then, the mold fixing plate 22 and the cooling plate 23 are installed on the array-type drawing furnace 21 in sequence, thus completing the replacement of the stretching die 223.

[0059] Although embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and should not be construed as limiting the present invention.

Claims

1. A multi-glass fiber bundle drawing device with adjustable glass fiber outer diameter, comprising a drawing tower, characterized in that, A forming mechanism is fixedly installed in the middle of the front side of the outer wall of the wire drawing tower, and a rod feeding mechanism is installed at the top of the front side of the outer wall of the wire drawing tower. The forming mechanism includes an array-type wire drawing furnace, a mold fixing plate located below the array-type wire drawing furnace, and a connecting component for fixing the mold fixing plate to the array-type wire drawing furnace. The top of the array-type wire drawing furnace has multiple holes with axes extending vertically. The multiple holes are evenly distributed in a rectangular shape and all penetrate the array-type wire drawing furnace. The mold fixing plate has multiple mounting holes with axes extending vertically. The multiple mounting holes are coaxially arranged with the multiple holes. A heating sleeve is fixedly installed at the bottom of the inner wall of the mounting hole. The inner hole of the heating sleeve is funnel-shaped. A stretching mold is detachably installed in the inner hole of the heating sleeve, and the outer wall of the stretching mold is completely fitted with the inner hole of the heating sleeve. The top of the stretching die has a wire drawing hole, which is funnel-shaped. The heating sleeve is electrically heated and connected to an external power source. A cooling plate is installed at the bottom of the mold fixing plate, and a cooling sleeve is fixedly installed at the top of the cooling plate. The axis of the cooling sleeve extends vertically, and the number of cooling sleeves is the same as the number of mounting holes. Multiple cooling sleeves are coaxially arranged with multiple mounting holes and all penetrate the cooling plate. A cooling channel is opened inside the cooling plate, and both ends of the cooling channel penetrate the side wall of the cooling plate. Multiple cooling sleeves are located inside the cooling channel. A bundle combiner is fixedly installed on the front side of the outer wall of the wire drawing tower, located directly below the forming mechanism. The top of the bundle combiner has a bundle combiner hole that passes through the bundle combiner. The bundle combiner has a double-opposite-conical structure. The internal material of the bundle combiner is brass.

2. The multi-glass fiber bundle drawing device with adjustable glass fiber outer diameter according to claim 1, characterized in that: The connecting assembly includes a fixing block and fixing pins fixed at the bottom edge of the array-type wire drawing furnace. There are at least two fixing blocks, which are evenly distributed along the circumference of the array-type wire drawing furnace. Connecting blocks are symmetrically installed at both ends of the fixing blocks. The connecting blocks are fixedly installed on the side wall of the mold fixing plate. The fixing blocks have a through-hole at the end near the connecting block. The connecting blocks have a connecting hole that is coaxial with the fixing hole and passes through them. The number of fixing pins is the same as the number of fixing blocks. Multiple fixing pins are inserted into the fixing holes of multiple fixing blocks, and the two ends of the fixing pins pass through the connecting holes on the connecting blocks located at both ends of the fixing blocks.

3. The multi-glass fiber bundle drawing device with adjustable glass fiber outer diameter according to claim 1, characterized in that: The cooling plate has through holes at its four bottom corners, with the axis extending vertically and penetrating the cooling plate. A connecting bolt coaxial with the through hole is slidably fitted inside the through hole, and the top of the connecting bolt penetrates the array-type wire drawing furnace and is threadedly connected to it.

4. The multi-glass fiber bundle drawing device with adjustable glass fiber outer diameter according to claim 1, characterized in that: The top front side of the outer wall of the wire drawing tower has a transmission groove extending vertically, and the bottom rear side of the outer wall of the wire drawing tower has an installation groove extending vertically. The top of the installation groove is connected to the bottom of the transmission groove. The rod feeding mechanism includes a driving component installed in the installation groove, a transmission block slidably fitted in the transmission groove in the vertical direction, and a rod feeding platform located directly above the forming mechanism. One end of the transmission block extends out of the transmission groove and is fixedly connected to the rear side wall of the rod feeding platform. The driving component is connected to the transmission block for driving the transmission block to slide along the transmission groove.

5. A multi-glass fiber bundle drawing device with adjustable glass fiber outer diameter according to claim 4, characterized in that: The driving component is an electric telescopic rod. The fixed end of the electric telescopic rod is fixedly installed at the bottom of the mounting groove. The telescopic end of the electric telescopic rod extends into the transmission groove and is fixedly connected to the bottom of the transmission block. A rod feeding chuck is fixedly installed at the bottom of the rod feeding platform. The number of rod feeding chucks is the same as the number of leakage holes. The multiple rod feeding chucks correspond to multiple leakage holes respectively.

6. The multi-glass fiber bundle drawing device with adjustable glass fiber outer diameter according to claim 1, characterized in that: The array-type wire drawing furnace has heating holes with the axis extending vertically inside. The number of heating holes is the same as the number of drain holes. Multiple heating holes are coaxially arranged with multiple drain holes. Heating wires are installed in the heating holes and extend in a spiral shape along the axis of the heating holes.

7. A multi-glass fiber bundle drawing device with adjustable glass fiber outer diameter according to claim 1, characterized in that: The fiber optic take-up machine is installed on the front side of the outer wall of the drawing tower, located below the bundler. The fiber optic take-up machine includes a drive shaft rotatably installed on the front side of the outer wall of the drawing tower. The axis of the drive shaft extends along the front-rear direction of the drawing tower. A take-up wheel coaxially arranged with the drive shaft is sleeved on the outer wall of the drive shaft.

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