A glass optical fiber drawing system

Abstract

The application relates to a glass optical fiber drawing system, and relates to the field of optical fiber production, which comprises the following: a drawing unit connected with the main body and used for drawing and winding an optical fiber; a space position adjusting frame arranged on the main body and used for adjusting the space position of a glass raw material rod; a plurality of clamping pieces, the glass raw material rod and the space position adjusting frame being connected through the clamping pieces, and the glass raw material rod and the clamping pieces corresponding to each other; a heating pipe arranged in the heating furnace and corresponding to the glass raw material rod; and a unit heating device wrapped on the heating pipe and used for heating and melting the glass raw material rod. The application has the effect of improving the heating uniformity of the glass raw material rod, so that the optical fiber drawn by the drawing unit is more uniform.

Description

Technical Field

[0001] This application relates to the field of optical fiber production, and in particular to a glass optical fiber drawing system. Background Technology

[0002] Optical fiber is generally an optical fiber made of glass or plastic, primarily used for transmitting optical signals. It features high bandwidth, low loss, and strong anti-interference capabilities. Based on the principle of total internal reflection, it enables long-distance transmission of optical signals.

[0003] The common method in glass fiber processing involves placing several glass raw material rods in a heating furnace, which then heats the rods, causing them to melt and form a molten substance. This molten substance flows under gravity and forms glass fibers with diameters of tens of micrometers. However, because multiple glass raw material rods are in a single heating furnace, the melting speed is faster at the end of the rods closer to the electric heating wire and slower at the end further away. This results in inconsistent melting speeds across the entire glass raw material rod, leading to uneven fiber formation. Summary of the Invention

[0004] To improve the problem of uneven optical fiber formation caused by inconsistent melting speed of glass raw material rods, this application provides a glass optical fiber drawing system.

[0005] The glass fiber drawing system provided in this application adopts the following technical solution:

[0006] A glass fiber drawing system includes a main body, a heating furnace, and further includes:

[0007] A fiber drawing unit, connected to the main body, is used to pull the optical fiber to move and rewind it;

[0008] A spatial position adjustment frame, mounted on the main body, is used to adjust the spatial position of the glass raw material rod;

[0009] Several fasteners are provided, and the glass raw material rod is connected to the spatial position adjustment frame through the fasteners, with each glass raw material rod corresponding to one of the fasteners;

[0010] Heating tubes are installed inside the heating furnace, each corresponding to a glass raw material rod;

[0011] A unit heating device, covering the heating tube, is used to heat and melt the glass raw material rod.

[0012] By adopting the above technical solution, when processing and manufacturing optical fibers, multiple glass raw material rods are first installed on a spatial position adjustment frame using fasteners. Then, the glass raw material rods are inserted into corresponding heating tubes by moving the spatial position adjustment frame. The glass raw material rods in the heating tubes are then heated and melted by a unit heating device. Finally, the molten glass raw material rods are drawn into fibers by a drawing unit. Since a single unit heating device heats a single glass raw material rod, the heating of the glass raw material rods is more uniform, resulting in more uniform optical fibers drawn by the drawing unit.

[0013] In one specific implementation, the wire drawing unit includes:

[0014] The take-up reel is composed of several take-up rings, which are concentrically arranged and slidably connected to each other.

[0015] A rotating motor is connected to the main body, and the winding ring located at the center of the winding wheel is sleeved on the drive shaft of the rotating motor;

[0016] A radial adjustment element is disposed on the output shaft of the rotary motor. The rotary motor can drive the take-up ring to rotate through the radial adjustment element. The radial adjustment element is used to drive the corresponding take-up ring to extend so as to wind up the optical fiber.

[0017] By adopting the above technical solution, before winding the optical fiber, the winding ring of the corresponding size is extended through the radial adjustment component so that the diameter of the winding ring is the length of a single short optical fiber. Then, the motor is rotated to drive the winding ring to wind the optical fiber. The optical fiber is then removed from the winding ring and cut simultaneously so that each optical fiber reaches the predetermined length, improving the convenience of optical fiber cutting.

[0018] In one specific implementation, the radial adjustment element includes:

[0019] The support rod is fixedly mounted on the output shaft of the rotating motor;

[0020] The guide rod corresponds to each of the winding rings and is fixedly connected. The guide rod slides along the radial direction of the winding ring through the support rod to provide support for the sliding of the winding ring.

[0021] A linear drive unit, corresponding to each of the winding rings, is disposed on the main body and connected to the winding rings, and is capable of driving the winding rings to slide axially so that the winding rings extend.

[0022] By adopting the above technical solution, during the process of winding optical fiber with a winding ring of the corresponding size, the linear hydraulic cylinder of the corresponding winding ring is driven to extend, and the linear hydraulic cylinder pushes out the winding ring of the corresponding size to wind up the optical fiber, thereby realizing the adjustment of different winding radii of the optical fiber.

[0023] In one specific implementation, each of the take-up rings is provided with a dovetail groove, which is arranged in a circle around the circumference of the take-up ring. The linear drive is provided with a dovetail block that mates with the dovetail groove. The dovetail block is slidably connected to the dovetail groove, so that the linear drive can drive the take-up ring to slide bidirectionally along the axial direction.

[0024] By adopting the above technical solution, the linear hydraulic cylinder drives the winding ring to slide through the cooperation of the dovetail block and the dovetail groove, thereby adjusting the state of the winding ring and improving the convenience of extending and retracting the winding ring, making the cooperation between the linear hydraulic cylinder and the rotary motor more convenient.

[0025] In one specific implementation, a guide block for guiding the optical fiber is slidably provided on the main body, and a sliding frame for the guide block to slide along the axial direction of the take-up wheel and along the direction of the optical fiber is provided on the main body. At least two rotating wheels are rotatably provided on the sliding frame, and a connecting belt for driving the guide block to slide is provided between the rotating wheels. The guide block and the connecting belt are rotatably arranged, and the rotating motor drives the rotating wheels to rotate through a connecting member.

[0026] By adopting the above technical solution, when the optical fiber is wound up, the rotating motor drives the rotating wheel to rotate through the connector, the rotating wheel drives the connecting belt to rotate, and the connecting belt drives the guide block to slide along the axis of the winding wheel on the sliding frame. The optical fiber slides under the guidance of the guide block, so that the optical fiber can be wound evenly along the axis of the winding wheel.

[0027] In one specific implementation scheme, the main body is provided with a reciprocating linear mechanism, and the reciprocating linear mechanism is provided with a fiber guide block. The optical fiber can slide through the fiber guide block and then be wound on the take-up ring. The reciprocating linear mechanism can drive the fiber guide block to move along the axial direction of the take-up ring.

[0028] By adopting the above technical solution, during the fiber winding process, the reciprocating linear mechanism drives the fiber guide block to move synchronously with the winding ring, so that the fiber can be evenly distributed along the axis of the winding ring, improving the neatness of the fiber distribution on the winding ring.

[0029] In one specific implementation, the main body is provided with a guide wheel group, which corresponds one-to-one with the heating tube. Each guide wheel group includes at least two guide wheels. The guide wheels in each group are rotatably disposed on the main body along the optical fiber movement direction. Two adjacent guide wheels in the same group are located on both sides of the optical fiber and abut against the optical fiber.

[0030] Each of the guide wheels is equipped with a pressure sensor, which can monitor the force applied to the guide wheel by the optical fiber. The main body is equipped with an alarm device, which is connected to the pressure sensor so as to issue an alarm signal based on the value of the pressure sensor.

[0031] By adopting the above technical solution, before the optical fibers are bundled, they are guided by guide wheels to keep them perpendicular during thermoforming, resulting in a more uniform sheath in the drawn fiber. A pressure sensor monitors the tension of the optical fiber during the drawing process. When the pressure sensor detects excessive tension, it indicates that the drawing speed exceeds the melting speed of the glass raw material rod, at which point the temperature inside the heating furnace is increased. Conversely, when the pressure sensor detects insufficient tension, it indicates that the melting speed of the glass raw material rod exceeds the drawing speed, thus the temperature inside the heating furnace is decreased. By monitoring changes in the fiber tension, the furnace temperature can be dynamically adjusted, improving the production quality of the optical fiber. When the pressure sensor detects no tension in the optical fiber, it indicates a fiber breakage, triggering an alarm device, thus improving the timeliness of handling abnormal situations during the fiber drawing process.

[0032] In a specific feasible implementation, it also includes:

[0033] A softening impregnation layer is disposed between the drawing unit and the heating furnace to enable contact with the optical fiber, and the softening impregnation layer is impregnated with an impregnating agent;

[0034] A softening supply unit, disposed on the main body, is used to store the wetting agent and deliver the wetting agent to the softened impregnation layer.

[0035] By adopting the above technical solution, when the optical fiber is wound up, the cooled optical fiber is first guided to the softening impregnation layer. The softening supply unit delivers the impregnating agent to the softening impregnation layer to impregnate the optical fiber, which can make the surface of the glass optical fiber smooth, glossy, and have a certain degree of dispersion, and can increase the strength of the optical fiber, which facilitates the subsequent processing of the optical fiber.

[0036] In one specific implementation scheme, the main body is provided with a supply pipe, the supply pipe is connected to the softening supply unit, a hollow tube is sleeved on the supply pipe, the hollow tube is rotatably connected to the supply pipe and is connected in communication, the softening impregnation layer is disposed on the outer wall of the hollow tube, and the hollow tube is provided with through holes so that the impregnating agent can be delivered to the softening impregnation layer.

[0037] By adopting the above technical solution, the sizing agent enters the softening impregnation layer through the hollow tube. When the optical fiber passes through the softening impregnation layer, it can drive the hollow tube to rotate, reducing the friction between the optical fiber and the softening impregnation layer, so that the softening sizing agent can be better coated on the optical fiber, thereby improving the softening effect of the optical fiber.

[0038] In one specific implementation, the main body is provided with at least two guide rods, the softening impregnation layer is disposed between two adjacent guide rods, and the optical fiber is disposed between the softening impregnation layer and the adjacent guide rods. The guide rods are used to guide the optical fiber to contact the softening impregnation layer.

[0039] A guide wheel assembly is provided between the guide rod and the outlet of the heating tube. Each guide wheel assembly corresponds to a heating tube. Each guide wheel assembly includes at least two guide wheels. The guide wheels in each assembly are rotatably mounted on the main body along the direction of optical fiber movement. Two adjacent guide wheels in the same assembly are located on both sides of the optical fiber and abut against the optical fiber.

[0040] By adopting the above technical solution, when guiding the optical fiber, the optical fiber passes through the guide rod and the softening impregnation layer in sequence. The guide rods on both sides of the softening impregnation layer push the optical fiber to adhere to the softening impregnation layer, so that the impregnating agent can better soften the optical fiber.

[0041] In summary, this application includes at least one of the following beneficial technical effects:

[0042] 1. When processing and manufacturing optical fibers, multiple glass raw material rods are first installed onto a spatial position adjustment frame using fasteners. Then, the glass raw material rods are inserted into the corresponding heating tubes by moving the spatial position adjustment frame. The glass raw material rods in the heating tubes are then heated and melted by a unit heating device. The molten glass raw material rods are then drawn into fibers by a drawing unit. Because a single unit heating device heats a single glass raw material rod, the heating of the glass raw material rods is more uniform, resulting in more uniform optical fibers drawn by the drawing unit.

[0043] 2. When winding optical fibers, the fibers first pass through a softening impregnation layer. The impregnating agent wets the optical fibers, which makes the surface of the glass optical fiber smooth, glossy, and has a certain degree of dispersion, and can increase the strength of the optical fiber, which facilitates the subsequent processing of the optical fiber.

[0044] 3. By selecting different sized take-up rings to wind up the optical fiber, the applicability of the winding device is broadened, and the flexibility of optical fiber winding is improved. Attached Figure Description

[0045] Figure 1 This is a schematic diagram of a glass fiber drawing system according to Embodiment 1 of this application.

[0046] Figure 2 This is a structural diagram of a display space position adjustment frame.

[0047] Figure 3 It is a cross-sectional view used to show the heating furnace along the axial direction of the two glass raw material rods.

[0048] Figure 4 It is an exploded view used to show the extruded surface.

[0049] Figure 5 It is a cross-sectional view showing the plane along the axis of the supply pipe.

[0050] Figure 6 This is a structural diagram showing the connector.

[0051] Figure 7 yes Figure 4 Enlarged view of section A.

[0052] Figure 8 It is a top view showing the radial adjustment element and the winding ring.

[0053] Figure 9 It is along Figure 8 A cross-sectional view along the BB line.

[0054] Figure 10 yes Figure 4 Enlarged view of section C.

[0055] Figure 11 It is an exploded view used to display the guide axis.

[0056] Figure 12 It is a side view showing the lever and push rod.

[0057] Figure 13 yes Figure 12 A cross-sectional view of the DD line.

[0058] Figure 14 This is a schematic diagram of a glass fiber drawing system according to Embodiment 2 of this application.

[0059] Figure 15 yes Figure 14 Enlarged view of section E in the middle.

[0060] Explanation of reference numerals in the attached drawings: 1. Main body; 11. Storage slot; 2. Wire drawing unit; 221. Winding wheel; 2212. Winding ring; 222. Rotary motor; 223. Radial adjustment component; 2231. Support rod; 2232. Linear drive component; 2233. Guide rod; 224. Sliding frame; 2241. Crossbar; 2242. Long rod; 2243. Slider; 2244. Sliding rod; 2245. Guide block; 2246. Rotating wheel; 2247. Connecting belt; 2248. Guide shaft; 2 249. Guide groove; 225. Connector; 2251. Drive gear; 2252. Rocker arm; 2253. Push rod; 2254. Crank-rocker mechanism; 2255. First gear; 2256. Second gear; 2257. Connecting rod; 226. Gear assembly; 2261. Bevel gear; 2271. Limiting surface; 2272. Spring; 23. Dovetail groove; 24. Dovetail block; 25. Drive shaft; 3. Softening impregnation layer; 31. Hollow tube; 32. Supply pipe; 33. Rotary motor 34. Driven gear; 35. Driven gear ring; 41. Guide rod; 411. Connecting plate; 42. Guide wheel assembly; 421. Guide wheel; 422. Pressure sensor; 423. Alarm device; 5. Softening supply unit; 51. Storage tank; 52. Metering pump; 53. Receiving groove; 54. Return pipe; 55. Delivery pipe; 6. Spatial position adjustment frame; 61. Vertical adjustment frame; 611. Main frame; 612. Lead screw; 613. Adjustment platform; 62. Horizontal adjustment frame; 621. Screw 622. Rod; 623. Adjusting block; 624. Adjusting support; 625. Moving plate; 626. Servo motor; 63. Three-jaw chuck; 64. Mounting bracket; 65. Laser diffraction diameter gauge; 71. Heating furnace; 72. Heating tube; 73. Unit heating device; 74. Refractory insulation material; 75. High-temperature laser rangefinder sensor; 8. Fastener; 9. Glass raw material rod; 10. Reciprocating linear mechanism; 101. Control motor; 102. Reciprocating lead screw; 103. Fiber guide block; 104. Sliding support rod. Detailed Implementation

[0061] The following is in conjunction with the appendix Figure 1-15 This application will be described in further detail.

[0062] This application discloses a glass fiber drawing system.

[0063] Example 1

[0064] Reference Figure 1 , Figure 2 and Figure 3A glass fiber drawing system includes a main body 1, a drawing unit 2, a spatial position adjustment frame 6, a heating furnace 71, a unit heating device 73, a fastener 8, a softening impregnation layer 3, and a softening supply unit 5. This application takes four glass raw material rods 9 as an example. The four glass raw material rods 9 are installed on the spatial position adjustment frame 6 by fastener 8. In this embodiment, the main body 1 is a wall.

[0065] Reference Figure 1 , Figure 2 The glass raw material rod 9 is composed of a fiber core and a fiber sheath. The fiber sheath is a low-refractive-index silicon glass cladding, and the fiber core is a high-refractive-index glass core. The spatial position adjustment frame 6 includes a vertical adjustment frame 61 and a horizontal adjustment frame 62. Four glass raw material rods 9 can correspond to one set of horizontal adjustment frames 62, and their horizontal positions can be adjusted simultaneously by one set of horizontal adjustment frames 62. Alternatively, they can correspond to four sets of horizontal adjustment frames 62, with each set of horizontal adjustment frames 62 adjusting the horizontal position of one glass raw material rod 9. In this embodiment, the preferred scheme is four glass raw material rods 9 corresponding to one set of horizontal adjustment frames 62.

[0066] Reference Figure 2 , Figure 3 The vertical adjustment frame 61 includes a main frame 611 and a motor-driven lead screw 612. The heating furnace 71 is fixedly mounted on the main frame 611. In this embodiment, the heating furnace 71 is rectangular. The heating furnace 71 is equipped with heating tubes 72 that correspond one-to-one with the glass raw material rods 9. The four heating tubes 72 are evenly arranged in the heating furnace 71. The unit heating device 73 is a heating resistance wire or an acetylene gas heating device. In this embodiment, a heating resistance wire is preferred. The number of heating tubes 72 corresponds one-to-one with the glass raw material rods 9. Each heating tube 72 is arranged in a vertical direction. Both ends of the heating tube 72 penetrate the upper and lower walls of the heating furnace 71. The glass raw material rods 9 are inserted into the heating tubes 72 from top to bottom. The heating resistance wire is wound around the heating tubes 72 and arranged along the axial direction of the heating tubes 72. The heating furnace 71 is filled with refractory insulation material 74.

[0067] When heating the glass raw material rod 9, the glass raw material rod 9 is inserted into the corresponding heating tube 72, and then the unit heating device 73 is energized to heat the glass raw material rod 9. The glass raw material rod 9 melts under heat and then drips and cools under the action of the drawing unit 2 and gravity to form optical fiber, thereby realizing the preparation of optical fiber. By heating the glass raw material rod 9 through the single unit heating device 73, the glass raw material rod 9 is heated more evenly, thereby making the optical fiber drawn by the drawing unit 2 more uniform.

[0068] Reference Figure 2The heating furnace 71 is equipped with a high-temperature resistant laser rangefinder sensor 75. The number of high-temperature resistant laser rangefinder sensors 75 can be one or four, each corresponding to a glass raw material rod 9. In this embodiment, four are preferred. The four high-temperature resistant laser rangefinder sensors 75 are positioned above the furnace opening, horizontally aligned with their respective glass raw material rods 9. The high-temperature resistant laser rangefinder sensors 75 emit laser beams to the surface of the glass raw material rod 9, measure the time difference or phase difference of the reflected light to calculate the distance, and measure the position and height of the glass raw material rod 9, thus monitoring its position. To measure the feed speed of the glass raw material rod 9, a photoelectric encoder is installed on the lead screw. The photoelectric encoder measures the rotational speed of the lead screw 612 and converts it into the feed speed of the glass raw material rod 9, thus monitoring the feed speed of the glass raw material rod 9. A mark is set at the end of the glass raw material rod 9. As the glass raw material rod 9 is continuously fed into the heating furnace 71, when the high-temperature resistant laser rangefinder 75 detects the mark at the end of the glass raw material rod 9, it indicates that the glass raw material rod 9 has finished being used, and the feeding of the glass raw material rod 9 is stopped. The high-temperature resistant laser rangefinder 75 that first reaches the mark at the end of the glass raw material rod 9 is used as the signal that the overall feeding of the glass raw material rod 9 has ended, thus improving the accuracy of the feeding of the glass raw material rod 9. If there is only one high-temperature resistant laser rangefinder 75, then the signal that the overall feeding of the glass raw material rod 9 has ended is when the high-temperature resistant laser rangefinder 75 is aligned with the corresponding mark at the end of the glass raw material rod 9.

[0069] When heating the glass raw material rod 9, the glass raw material rod 9 is inserted into the corresponding resistance wire heating module for heating. The glass raw material rod 9 melts when heated, and then drips and cools under the action of the drawing unit 2 and gravity to form optical fiber, thereby realizing the preparation of optical fiber. By heating the glass raw material rod 9 through a single resistance wire heating module, the glass raw material rod 9 is heated more evenly, which makes the optical fiber drawn out by the drawing unit 2 more uniform.

[0070] Reference Figure 2The lead screw 612 is vertically placed on the main frame 611 and rotatably connected to the main frame 611. An adjustment platform 613 is provided on the nut of the lead screw 612. There are two horizontal adjustment frames 62, positioned vertically on the adjustment platform 613. Each horizontal adjustment frame 62 includes a screw 621, an adjustment block 622, and an adjustment support 623. The two screws 621 are perpendicular to each other. The upper adjustment support 623 is fixedly positioned below the adjustment platform 613. The screw 621 and the adjustment support... The base 623 is rotatably set, the screw 621 passes through the adjusting block 622 and is threadedly connected to the adjusting block 622. The upper adjusting block 622 is provided with a moving plate 624, and the lower adjusting support 623 is fixedly set on the moving plate 624. The lower adjusting block 622 slides along the moving plate 624. Each screw 621 is connected to a servo motor 625 on the corresponding adjusting support 623. The servo motor 625 drives the screw 621 to rotate, thereby realizing the automatic adjustment of the position of the glass raw material rod 9.

[0071] Reference Figure 2 A three-jaw chuck 63 is fixedly mounted on the adjusting block 622 located below. A mounting bracket 64 is located below the three-jaw chuck 63, and a fixing rod is located on the top of the mounting bracket 64. The fixing rod is inserted into the three-jaw chuck 63 for fixation. The clamping device 8 is located at the bottom of the mounting bracket 64. In this embodiment, the clamping device 8 is a collet, which corresponds one-to-one with the glass raw material rod 9 and clamps and fixes the end of the glass raw material rod 9 so that the glass raw material rod 9 is in a vertical state.

[0072] Both horizontal adjustment frames 62 are equipped with grating rulers. The grating rulers are mounted parallel to the screw 621 and fixed to the moving plate 624 and the adjustment platform 613. The reading head is fixed to the adjustment block 622, directly scanning and measuring the actual position of the platform. The controller compares the target position with the actual position fed back by the grating ruler, calculates the error, and uses PID and other algorithms to drive the servo motor 625 to eliminate the error. Limit switches are also equipped to prevent overtravel, and an origin switch establishes the coordinate system reference. This achieves automated alignment of the mounting frame 64, improving the convenience of aligning the glass raw material rod 9 with the heating furnace 71.

[0073] When installing the glass raw material rods 9, the glass raw material rods 9 are first inserted one by one into the collet to fix them. Then, the servo motor 625 drives the screws 621 of each rod to rotate, so that the glass raw material rods 9 are placed above the heating furnace 71. Then, the lead screw 612 drives the adjustment platform 613 to slide up and down, adjusting the vertical position of the glass raw material rods 9 so that they are inserted into the heating furnace 71 for heating. As the glass raw material rods 9 continue to melt, the lead screw 612 drives the glass raw material rods 9 to move down, thereby realizing the continuous feeding of the glass raw material rods 9 into the heating furnace 71.

[0074] Reference Figure 2 Below the heating furnace 71 is a laser diffraction diameter gauge 65. The laser diffraction diameter gauge 65 emits a laser beam toward the pipeline. The laser beam irradiates the optical fiber and generates diffraction fringes. The fiber diameter is inferred from the fringe spacing to monitor the fiber diameter. If the fiber diameter is too large, the drawing speed is increased; if the fiber diameter is too small, the drawing speed is slowed down, thereby achieving dynamic adjustment of the fiber diameter. At the same time, since this fiber diameter measurement method is non-contact, it avoids affecting the roundness of the optical fiber.

[0075] Reference Figure 4 , Figure 5 The softening impregnation layer 3 and the softening supply unit 5 are both located between the drawing unit 2 and the heating furnace 71. A supply pipe 32 is fixedly mounted on the main body 1, arranged along the side of the main body 1. A hollow tube 31 is fitted onto the end of the supply pipe 32. The end caps of the hollow tube 31 are rotatably sealed to the supply pipe 32. A connecting hole is provided at the end of the supply pipe 32 that inserts into the hollow tube 31, allowing the supply pipe 32 to communicate with the hollow tube 31. A rotary motor 33 is fixedly mounted on the supply pipe 32. The rotary motor 33 has a self-locking function. A drive gear 34 is coaxially fixed on the output shaft of the rotary motor 33. A driven gear ring 35 is fixedly mounted at the end of the hollow tube 31, with one ring arranged around the circumference of the hollow tube 31. The drive gear 34 meshes with the driven gear ring 35, causing the rotary motor 33 to drive the hollow tube 31 to rotate. The softening and wetting layer 3 is wrapped around the outside of the hollow tube 31. The softening and wetting layer 3 is a cotton layer or a sponge layer. In this embodiment, it is preferably a cotton layer. The side wall of the hollow tube 31 is provided with several through holes that are connected inside and outside.

[0076] Reference Figure 4 , Figure 6 In this embodiment, the softening supply unit 5 includes a storage tank 51 and a metering pump 52. The storage tank 51 is installed on the foundation and located behind the main body 1. The main body 1 has a receiving groove 53 fixed below the softening impregnation layer 3. The impregnating agent dripping from the softening impregnation layer 3 can drip into the receiving groove 53. The bottom of the receiving groove 53 is connected to the storage tank 51 through a return pipe 54. The receiving groove 53 is located above the surface of the impregnating agent in the storage tank 51, so that the impregnating agent in the receiving groove 53 can flow back into the storage tank 51. The suction end of the dripping metering pump 52 is connected to the storage tank 51 through a pipe, and the discharge end is connected to the supply pipe 32 through a delivery pipe 55, so that the metering pump 52 delivers the impregnating agent in the storage tank 51 to the supply pipe 32, and then delivers it to the hollow pipe 31 through the supply pipe 32.

[0077] During the softening and impregnation process of the optical fiber, the metering pump 52 delivers the impregnating agent from the storage tank 51 to the hollow tube 31 via the supply pipe 32. The agent then penetrates the softening and impregnating layer 3 through the through-hole of the hollow tube 31. The optical fiber bypasses the softening and impregnating layer 3 and comes into contact with the impregnating agent, thus achieving softening and impregnation of the optical fiber. The rotary motor 33 drives the hollow tube 31 to rotate in the same direction as the optical fiber's movement, reducing friction between the softening and impregnating layer 3 and the optical fiber. Alternatively, the self-locking function of the rotary motor 33 can be used to fix the hollow tube 31, preventing the softening and impregnating layer 3 from rotating.

[0078] Reference Figure 4 Two guide rods 41 are adjustablely fixed on the main body 1. Each guide rod 41 is fixedly connected to the main body 1 through a connecting plate 411. Specifically, one end of the connecting plate 411 is fixed to the main body 1 by a bolt, and two nuts on the bolt clamp the connecting plate 411. The connecting plate 411 has a strip hole along its own length. The guide rod 41 passes through the strip hole and is clamped and fixed by the two nuts screwed on the guide rod 41, thus realizing the fixed connection between the guide rod 41 and the main body 1. The installation position of the guide rod 41 can be adjusted by different installation positions on the connecting plate 411. By adjusting the installation position of the two guide rods 41, the optical fiber can be tensioned, increasing the contact pressure between the optical fiber and the softening impregnation layer 3, and improving the softening impregnation effect of the optical fiber. Each guide rod 41 is arranged along the length of the hollow tube 31, and the hollow tube 31 is located between the two guide rods 41. The optical fiber passes through the upper guide rod 41, the softening impregnation layer 3, and the lower guide rod 41 in sequence. The angle between the two guide rods 41 and the hollow tube 31 is an obtuse angle, so that the optical fiber abuts against the softening impregnation layer 3.

[0079] Reference Figure 4 , Figure 7Above the upper guide rod 41, there is a guide wheel group 42, which corresponds one-to-one with the glass raw material rod 9. Each guide wheel group 42 includes two guide wheels 421. Four parallel support rods are fixedly installed on the main body 1. The two guide wheels 421 are fixedly sleeved on one support rod. The two guide wheels 421 in each group are arranged vertically. The two adjacent guide wheels 421 in the same group are located on both sides of the optical fiber and abut against the optical fiber, so as to realize the installation of eight guide wheels 421. Each guide wheel 421 is equipped with a pressure sensor 422. The optical fiber passes around the guide wheel 421 and generates pressure on the guide wheel 421. The pressure sensor 422 detects the tension change of the optical fiber. When the tension decreases, the melting speed of the glass raw material rod 9 is greater than the drawing speed of the optical fiber. At this time, the furnace temperature is reduced. When the tension increases, the melting speed of the glass raw material rod 9 is less than the drawing speed of the optical fiber. At this time, the furnace temperature is increased. The furnace temperature of the heating furnace 71 is adjusted by monitoring the change in fiber tension using pressure sensor 422, ensuring that the fiber diameter is more uniform.

[0080] Pressure sensor 422 is connected to alarm device 423. When pressure sensor 422 senses that the pressure on fiber optic guide wheel 421 is zero, that is, the fiber optic cable breaks, alarm device 423 is triggered to sound an alarm and handle the situation in time.

[0081] When the optical fiber is wound up, after the optical fiber comes out of the heating furnace 71, it passes through the guide rod 41, the hollow tube 31 and another guide rod 41 in sequence. Under the guidance of the two guide rods 41, the optical fiber comes into contact with and slides against the softening impregnation layer 3. The metering pump 52 delivers the impregnating agent in the storage tank 51 to the hollow tube 31 through the supply pipe 32, and then impregnates the optical fiber into the softening impregnation layer 3 through the through hole of the hollow tube 31. The optical fiber passes through the softening impregnation layer 3 and comes into contact with the impregnating agent, thereby achieving the softening impregnation of the optical fiber. The impregnation of the optical fiber by the impregnating agent can make the surface of the glass optical fiber smooth, shiny and have a certain degree of dispersion, and can increase the strength of the optical fiber, which is convenient for the subsequent processing of the optical fiber.

[0082] Before the optical fibers are bundled, they are first guided by the guide wheels 421 in the same group, so that the optical fibers remain vertical during thermoforming, making the skin of the drawn optical fibers more uniform.

[0083] Reference Figure 4 , Figure 6 In this embodiment, the drawing unit 2 includes a winding wheel 221, a rotating motor 222, and a radial adjustment component 223. The main body 1 has a storage groove 11. Initially, the winding wheel 221 is located in the storage groove 11. When the winding wheel 221 winds up the optical fiber, the winding wheel 221 is pulled out of the storage groove 11.

[0084] Reference Figure 4 , Figure 8 and Figure 9 The take-up reel 221 is composed of multiple concentrically arranged take-up rings 2212. The diameter of the take-up rings 2212 gradually increases outward from the center of the take-up reel 221. The rotating motor 222 is located on the side of the main body 1 opposite to the take-up reel 221. The output shaft of the rotating motor 222 passes through the main body 1 and is inserted into the storage groove 11. The take-up ring 2212 located at the center of the take-up reel 221 is sleeved on the output shaft of the rotating motor 222. The take-up rings 2212 and the output shaft of the rotating motor 222 are slidably arranged, as are the take-up rings 2212 with each other. The axis of each take-up ring 2212 is collinear with the axis of the output shaft of the rotating motor 222. The diameter of the take-up ring 2212 can be set according to the cutting length of different optical fibers, and multiple different diameters of the take-up rings 2212 can be set.

[0085] Reference Figure 8 , Figure 9 The radial adjustment component 223 includes a support rod 2231 and a linear drive component 2232. There are two support rods 2231, which are fixedly connected to the output shaft of the rotary motor 222 and arranged radially along the winding ring 2212. Each support rod 2231 is provided with a guide rod 2233 corresponding to the winding ring 2212. One end of the guide rod 2233 is fixedly connected to the corresponding winding ring 2212, and the other end slides along the axial direction of the winding ring 2212 and passes through the support rod 2231. Linear drive component 2232 is fixedly installed on the bottom wall of the receiving groove 11. Each winding ring 2212 corresponds to two linear drive components 2232. In this embodiment, the linear drive component 2232 is a linear hydraulic cylinder. The cylinder body of the linear hydraulic cylinder is fixedly connected to the main body 1. A dovetail block 24 is fixedly provided on the piston rod of the linear hydraulic cylinder. The winding ring 2212 is provided with a dovetail groove 23 on one side facing the linear hydraulic cylinder. The dovetail groove 23 is arranged in a circle around the circumference of the corresponding winding ring 2212. The dovetail block 24 is slidably inserted into the dovetail groove 23 and is adapted to the dovetail groove 23. Lubricating oil can be applied to the dovetail groove 23 to reduce the friction between the dovetail block 24 and the dovetail groove 23.

[0086] During the process of winding the optical fiber using a winding ring 2212 of the corresponding size, the corresponding linear hydraulic cylinder is driven to extend. The hydraulic cylinder pushes the corresponding winding ring 2212 out of the storage slot 11, and makes the winding ring 2212 face the hollow tube 31, thereby realizing the adjustment of different winding radii of the optical fiber.

[0087] Reference Figure 4 , Figure 10 and Figure 11A sliding frame 224 is fixedly mounted on the main body 1. When the take-up ring 2212 extends out of the receiving slot 11 to take up the optical fiber, the take-up ring 2212 is positioned opposite to the sliding frame 224. The sliding frame 224 is a rectangular frame composed of two crossbars 2241 and two long rods 2242. The two long rods 2242 are arranged along the axial direction of the take-up wheel 221. Sliding blocks 2243 are slidably mounted on the two long rods 2242 respectively. A sliding rod 2244 is fixed between the two sliding blocks 2243. The sliding rod 2244 is arranged along the radial direction of the take-up wheel 221. A guide block 2245 is slidably mounted on the sliding rod 2244. The sliding frame 224 is equipped with two rotating wheels 2246. The rotating wheel 2246 is rotatably mounted to the sliding frame 224 via a rotating shaft. The rotating wheel 2246 is mounted vertically and connected to the two rotating wheels 2246 via a connecting belt 2247. A guide shaft 2248 for inserting a guide block 2245 is fixed on the connecting belt 2247. The guide shaft 2248 is rotatably mounted to the guide block 2245. The guide block 2245 is provided with a guide groove 2249 for optical fiber to pass through. The rotating motor 222 drives the rotating wheel 2246 to rotate via the connector 225.

[0088] Reference Figure 6 , Figure 12 and Figure 13 The connecting component 225 includes a drive gear 2251, a rocker arm 2252, a push rod 2253, and a crank-rocker mechanism 2254. The crank-rocker mechanism 2254 includes a first gear 2255, a second gear 2256, and a connecting rod 2257. The first gear 2255 is coaxially mounted on the output shaft end of the rotating motor 222. The second gear 2256 is rotatably mounted on the main body 1 and meshes with the first gear 2255. The rocker arm 2252 is rotatably mounted on the main body 1. One end of the connecting rod 2257 is eccentrically mounted on the second gear 2256 and meshes with the second gear 2256. The connecting rod 2257 is rotatably connected to the rocker arm 2252 via a hinge shaft. The hinge shaft is offset from the rotation center of the rocker arm 2252. The drive gear 2251 is rotatably mounted on the main body 1 and located below the rocker arm 2252. The drive gear 2251 drives the rotating wheel 2246 to rotate via the transmission shaft 25 and the gear assembly 226. The gear assembly 226 includes two meshing bevel gears 2261. One bevel gear 2261 is coaxially fixed on the rotating wheel 2246, and the other bevel gear 2261 is coaxially mounted with the drive gear 2251.

[0089] Reference Figure 6 , Figure 12 and Figure 13The push rod 2253 is located at the bottom of the swing rod 2252. One end of the push rod 2253 and the rotation of the swing rod 2252 are located on the side wall of the swing rod 2252. The other end of the push rod 2253 is inserted into the tooth groove of the drive gear 2251. The swing rod 2252 is provided with a limiting surface 2271 for limiting the rotation of the push rod 2253. The setting of the limiting surface 2271 allows the swing rod 2252 to drive the push rod 2253 to push the drive gear 2251 to rotate in one direction. The operator can adjust the distance of each swing of the push rod 2253 by adjusting the distance between the connecting rod 2257 and the rotation center of the swing rod 2252, so that the push rod 2253 can push the drive gear 2251 to rotate one tooth each time. The swing rod 2252 is provided with a spring 2272 to pull the push rod 2253 to fit against the limiting surface 2271.

[0090] When winding up the optical fiber, the winding ring 2212 with the corresponding circumference is first determined according to the subsequent cutting length of the optical fiber. Then, the corresponding linear drive 2232 is activated to push the winding ring 2212 out of the storage slot 11 and make it face the sliding frame 224. Then, the motor 222 is rotated to drive the winding ring 2212 to wind up the optical fiber, thereby realizing the winding of the optical fiber. After the optical fiber is wound up, the light is removed from the winding ring 2212, and then one side of the optical fiber roll is cut to obtain the optical fiber of the predetermined length, thereby improving the convenience and efficiency of optical fiber cutting.

[0091] When the take-up wheel 221 takes up the optical fiber, the rotating motor 222 drives the first gear 2255 to rotate, which in turn drives the second gear 2256 to rotate. Simultaneously, the rotation of the second gear 2256 drives the swing arm 2252 to swing via the connecting rod 2257. When the swing arm 2252 moves towards its push stroke, the push rod 2253 contacts the limiting surface 2271. The swing arm 2252 drives the push rod 2253 to push the drive gear 2251 to rotate. When the swing arm 225... During the return stroke, push rod 2253 disengages from limiting surface 2271, and rocker arm 2252 rotates relative to push rod 2253. At the same time, rocker arm 2252 pulls push rod 2253 out of a tooth groove. Then, when spring 2272 pulls, push rod 2253 comes into contact with limiting surface 2271 again. Then, in the next push stroke of rocker arm 2252, rocker arm 2252 drives drive gear 2251 to rotate again, thereby realizing intermittent drive of drive gear 2251.

[0092] When the drive gear 2251 rotates, it drives the rotating wheel 2246 to rotate through the gear assembly 226. The rotating wheel 2246 drives the connecting belt 2247 to rotate. The connecting belt 2247 drives the guide block to slide on the sliding frame 224 through the guide shaft 2248. The guide block 2245 drives the optical fiber to slide along the axial direction of the winding wheel 221, so that the optical fiber can be evenly wound along the axial direction of the winding wheel 221. At the same time, through the intermittent movement of the guide block 2245, the optical fiber is wound on the winding wheel 221 once before moving, so that the length of the optical fiber wound once is closer to the predetermined cutting length.

[0093] The implementation principle of Example 1 is as follows: When processing optical fibers, multiple glass raw material rods 9 are first installed on the spatial position adjustment frame 6 using a collet. Then, the glass raw material rods 9 are inserted into the heating furnace 71 by moving the spatial position adjustment frame 6. The heating furnace 71 heats and melts the glass raw material rods 9 in the heating tube 72. Then, the drawing unit 2 draws the molten glass raw material rods 9 into fibers. Since the single unit heating device 73 heats a single glass raw material rod 9, the heating of the glass raw material rod 9 is more uniform, thereby making the optical fiber drawn out by the drawing unit 2 more uniform.

[0094] Example 2

[0095] Reference Figure 14 , Figure 15 The difference between this embodiment and Embodiment 1 is that the main body 1 is provided with a reciprocating linear mechanism 10. In this embodiment, the reciprocating linear mechanism 10 includes a control motor 101 and a reciprocating lead screw 102. The control motor 101 is fixedly mounted on the back of the main body 1, and the reciprocating lead screw 102 is coaxially fixedly mounted on the output shaft of the control motor 101, and the reciprocating lead screw 102 passes through the main body 1 and extends to the front of the main body 1. A sliding support rod 104 is fixedly mounted on the main body 1 and arranged axially along the winding ring 2212. A fiber guide block 103 is slidably sleeved on the sliding support rod 104. The fiber guide block 103 has a through hole for the optical fiber to pass through. The optical fiber passes through the through hole on the fiber guide block 103 and is then wound around the winding ring 2212. The nut on the reciprocating screw 102 is fixedly connected to the fiber guide block 103, so that the control motor 101 drives the fiber guide block 103 to slide back and forth along the axial direction of the winding ring 2212 through the reciprocating screw 102, so that the optical fiber is evenly arranged along the axial direction of the winding ring 2212, and the optical fiber is wound more neatly on the winding ring 2212.

[0096] The rotary motor 222 is equipped with an encoder, and the control motor 101 is also equipped with an encoder. The rotary motor 222 and the control motor 101 are connected through a PLC controller. The PLC controller reads the encoder data of the rotary motor 222 and calculates the target number of revolutions of the control motor 101. It drives the control motor 101 to track the target value through closed-loop control, and then drives the control motor 101 to rotate through the control signal. This achieves a direct proportional control of the number of revolutions between the control motor 101 and the rotary motor 222, thereby enabling the fiber lead block 103 to adjust its feed amount according to the number of revolutions of the take-up ring 2212.

[0097] The above are all preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A glass fiber drawing system, comprising a main body (1) and a heating furnace (71), characterized in that: Also includes: The fiber drawing unit (2) is connected to the main body (1) and is used to pull the optical fiber to move and rewind it; A spatial position adjustment frame (6) is installed on the main body (1) and is used to adjust the spatial position of the glass raw material rod (9); Several fasteners (8) are provided, and the glass raw material rod (9) is connected to the spatial position adjustment frame (6) through the fasteners (8). The glass raw material rod (9) and the fasteners (8) correspond one-to-one. Heating tubes (72) are installed inside the heating furnace (71) and correspond one-to-one with the glass raw material rods (9); A unit heating device (73) is wrapped around the heating tube (72) and is used to heat and melt the glass raw material rod (9); The wire drawing unit (2) includes: The take-up reel (221) is composed of a plurality of take-up rings (2212), which are concentrically arranged and slidably connected to each other. A rotating motor (222) is connected to the main body (1), and the winding ring (2212) located at the center of the winding wheel (221) is sleeved on the drive shaft of the rotating motor (222); A radial adjustment member (223) is provided on the output shaft of the rotary motor (222). The rotary motor (222) can drive the winding ring (2212) to rotate through the radial adjustment member (223). The radial adjustment member (223) is used to drive the corresponding winding ring (2212) to extend so as to wind up the optical fiber. The radial adjustment element (223) includes: The support rod (2231) is fixedly mounted on the output shaft of the rotary motor (222); Guide rods (2233) correspond one-to-one with the winding rings (2212) and are fixedly connected. The guide rods (2233) slide along the radial direction of the winding rings (2212) through the support rods (2231) to form support for the sliding of the winding rings (2212). A linear drive (2232) corresponds one-to-one with the take-up ring (2212). The linear drive (2232) is disposed on the main body (1) and connected to the take-up ring (2212). It can drive the take-up ring (2212) to slide along the axial direction so that the take-up ring (2212) extends out.

2. The glass fiber drawing system according to claim 1, characterized in that: Each of the take-up rings (2212) is provided with a dovetail groove (23), which is arranged in a circle around the circumference of the take-up ring (2212). The linear drive member (2232) is provided with a dovetail block (24) that cooperates with the dovetail groove (23). The dovetail block (24) is slidably connected to the dovetail groove (23) so that the linear drive member (2232) can drive the take-up ring (2212) to slide bidirectionally along the axial direction.

3. The glass fiber drawing system according to claim 1, characterized in that: The main body (1) is slidably provided with a guide block (2245) for guiding the optical fiber to slide. The main body (1) is provided with a sliding frame (224) for the guide block (2245) to slide along the axial direction of the take-up wheel (221) and along the direction of the optical fiber. At least two rotating wheels (2246) are rotatably provided on the sliding frame (224). A connecting belt (2247) for driving the guide block (2245) to slide is provided between the rotating wheels (2246). The guide block (2245) and the connecting belt (2247) are rotatably arranged. The rotating motor (222) drives the rotating wheel (2246) to rotate through the connector (225).

4. The glass fiber drawing system according to claim 1, characterized in that: The main body (1) is provided with a reciprocating linear mechanism (10), and the reciprocating linear mechanism (10) is provided with a fiber guide block (103). The optical fiber can slide through the fiber guide block (103) and then be wound on the winding ring (2212). The reciprocating linear mechanism (10) can drive the fiber guide block (103) to move along the axial direction of the winding ring (2212).

5. The glass fiber drawing system according to claim 1, characterized in that: The main body (1) is provided with a guide wheel group (42), and the guide wheel group (42) corresponds one-to-one with the heating tube (72). Each guide wheel group (42) includes at least two guide wheels (421). The guide wheels (421) in each group are rotatably disposed on the main body (1) along the optical fiber moving direction. The two adjacent guide wheels (421) in the same group are located on both sides of the optical fiber and abut against the optical fiber. Each of the guide wheels (421) is provided with a pressure sensor (422), which can monitor the force applied to the guide wheel (421) by the optical fiber. The main body (1) is provided with an alarm device (423), which is connected to the pressure sensor (422) so as to issue an alarm signal according to the value of the pressure sensor (422).

6. The glass fiber drawing system according to claim 1, characterized in that: Also includes: A softening impregnation layer (3) is disposed between the drawing unit (2) and the heating furnace (71) to be able to contact the optical fiber, and the softening impregnation layer (3) is impregnated with an impregnating agent. A softening supply unit (5) is disposed on the main body (1) for storing the wetting agent and delivering the wetting agent to the softening impregnation layer (3).

7. The glass fiber drawing system according to claim 6, characterized in that: The main body (1) is provided with a supply pipe (32), which is connected to the softening supply unit (5). A hollow tube (31) is sleeved on the supply pipe (32). The hollow tube (31) is rotatably connected to the supply pipe (32) and is connected in communication. The softening impregnation layer (3) is provided on the outer wall of the hollow tube (31). The hollow tube (31) is provided with through holes so that the impregnating agent can be delivered to the softening impregnation layer (3).

8. The glass fiber drawing system according to claim 6, characterized in that: The main body (1) is provided with at least two guide rods (41), the softening impregnation layer (3) is disposed between two adjacent guide rods (41), and the optical fiber is disposed between the softening impregnation layer (3) and the adjacent guide rod (41). The guide rod (41) is used to guide the optical fiber to contact the softening impregnation layer (3).

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