Optical fiber drawing verticality detection device

Abstract

The application relates to a fiber drawing verticality detection device, which is used for detecting the verticality of optical fiber in the process of fiber drawing and belongs to the technical field of fiber drawing process. The device comprises a mounting assembly and a detection assembly. The mounting assembly comprises a mounting rod and a center ring. One end of the mounting rod is fixedly connected with the side wall of the center ring, and the other end of the mounting rod is fixedly connected with a fiber drawing furnace through bolts. The center ring is concentrically arranged with the fiber drawing furnace. The detection assembly comprises three detection rods and three light emitters. One end of each detection rod is fixedly connected with the center ring. The three detection rods are evenly arranged on the same circle and are arranged along the radial direction of the center ring. The light emitters are located on the top of the detection rods, and the light emitters emit colored detection light. The detection light emitted by the three light emitters has a common point with the center of the fiber drawing furnace, and the common point is located on the same vertical line. The verticality of the optical fiber is judged by observing the projection of the detection light on the optical fiber.

Description

Technical Field

[0001] This invention relates to the field of optical fiber drawing technology, specifically to an optical fiber drawing verticality detection device. Background Technology

[0002] Fiber optic drawing takes place in fiber optic drawing towers, which are typically four or five stories high. At the top of the tower, the fiber optic preform is held in place by chucks. The bottom end of the preform is drawn into a filament first. The middle section of the tower is the cooling zone; the fiber gradually cools as it moves downwards under the action of the take-up mechanism at the bottom. In addition, coating and fiber diameter measurements are performed on the fiber during its downward movement. The verticality of the fiber during drawing reflects whether the preform is aligned correctly. Summary of the Invention

[0003] The purpose of this invention is to provide a fiber optic drawing verticality detection device for detecting the verticality of the fiber optic cable during the fiber drawing process.

[0004] The technical solution adopted by this invention to solve its technical problem is: an optical fiber drawing verticality detection device, including an installation component and a detection component. The installation component includes installation rods and a circular central ring. Multiple installation rods are included, one end of which is fixedly connected to the side wall of the central ring, and the other end of which is fixedly connected to the optical fiber drawing furnace by bolts. The central ring is concentrically arranged with the optical fiber drawing furnace. The detection component includes three detection rods and three light emitters. One end of each detection rod is fixedly connected to the central ring. The three detection rods are evenly arranged on the same circumference and radially arranged along the central ring. The light emitters are located at the top of the detection rods and emit colored detection light.

[0005] Furthermore, the top of the detection rod has a support member, the support member has a horizontally arranged threaded hole, the outer wall of the light emitter has an external thread, and the light emitter passes into the threaded hole and is threadedly connected to the support member.

[0006] Furthermore, the mounting rod has three rods, and the three mounting rods and the three detection rods are evenly arranged circumferentially.

[0007] Furthermore, there are multiple installation components and multiple detection components, which are arranged sequentially from top to bottom. There is a positioning component between two adjacent installation components. The positioning component ensures that after the installation components are installed on the optical fiber drawing furnace, the central rings of the multiple installation components are arranged coaxially.

[0008] Furthermore, the positioning assembly includes a plumb bob and a positioning ring. The plumb bob is attached to the bottom of the mounting rod of the upper mounting assembly by a suspension line. The positioning ring is fixed to the top of the mounting rod of the lower mounting assembly. The positioning ring has a spring and a contact piece inside. The inner wall of the positioning ring has multiple spring seats. One end of the spring is fixedly connected to the spring seat, and the other end of the spring is fixedly connected to the contact piece. The spring has a pressure sensor.

[0009] Furthermore, the spring seats are evenly distributed circumferentially on the inner wall of the positioning ring.

[0010] Furthermore, the projection of the detection light is a dot.

[0011] Furthermore, the projection of the detection light is a mixed color band, including a central color band, a first offset color band located on one side of the central color band, and a second offset color band located on the other side of the central color band. The colors of the central color band and the first offset color band, as well as the colors of the central color band and the second offset color band, are different.

[0012] Furthermore, the heights of the light emitters vary.

[0013] Furthermore, it also includes a camera, which is mounted at the other end of the detection rod.

[0014] Furthermore, the central ring comprises three identical composite pieces, each composite piece having an arc-shaped structure. One end of each composite piece has a first insert, and the other end has a first slot. Between two adjacent composite pieces, the first insert on one composite piece is inserted into the first slot on the other composite piece. One end of the mounting rod is fixedly connected to the middle of the composite piece, and one end of the detection rod is inserted into the connection between the two composite pieces.

[0015] Furthermore, the two ends of the assembly piece also have second inserts, which are located on the outer side wall of the assembly piece. One end of the detection rod has a second slot, and the second inserts on two adjacent assemblies contact each other and are inserted into the second slot.

[0016] The beneficial effects of the present invention are as follows: The present invention is fixedly installed on the optical fiber drawing furnace by the installation component, the central ring is installed concentrically with the optical fiber drawing furnace, and detection light is emitted by three optical transmitters. The intersection of the detection light emitted by the three optical transmitters is located on the same vertical line as the center of the optical fiber drawing furnace. Then, the verticality of the optical fiber is judged by observing the projection of the detection light on the optical fiber. Attached Figure Description

[0017] Figure 1 This is a three-dimensional diagram of the detection device according to Embodiment 1 of the present invention;

[0018] Figure 2 This is a front view of the detection device according to Embodiment 1 of the present invention;

[0019] Figure 3 This is a right view of the detection device according to Embodiment 1 of the present invention;

[0020] Figure 4 This is a top view of the detection device according to Embodiment 1 of the present invention;

[0021] Figure 5 This is a schematic diagram of the detection light beam illuminating a vertically positioned optical fiber using the detection device of Embodiment 1 of the present invention.

[0022] Figure 6 This is one of the schematic diagrams of the detection light beam illuminating an optical fiber in a deflected state using the detection device of Embodiment 1 of the present invention.

[0023] Figure 7 This is a second schematic diagram of the detection light beam illuminating an optical fiber in a deflected state using the detection device of Embodiment 1 of the present invention.

[0024] Figure 8 This is a front view of the detection device according to Embodiment 2 of the present invention;

[0025] Figure 9 This is a three-dimensional assembly diagram of the installation components and plumb bob according to Embodiment 2 of the present invention;

[0026] Figure 10 This is a top view assembly diagram of the mounting components and positioning ring according to Embodiment 2 of the present invention;

[0027] Figure 11 for Figure 10 Enlarged view of section A in the image;

[0028] Figure 12 for Figure 11 Diagram showing the deviation of the center line;

[0029] Figure 13 This is a schematic diagram of the detection light illuminating the optical fiber in Embodiment 1 of the present invention;

[0030] Figure 14 This is a front view of the detection light illuminating the optical fiber according to Embodiment 3 of the present invention;

[0031] Figure 15 This is a top view of the detection light illuminating the optical fiber in Embodiment 3 of the present invention;

[0032] Figure 16 This is a top view of the detection device according to Embodiment 4 of the present invention;

[0033] Figure 17 This is a top view of the detection device according to Embodiment 5 of the present invention;

[0034] Figure 18 This is a top view of the mounting rod and assembly piece according to Embodiment 5 of the present invention;

[0035] Figure 19 for Figure 17 Enlarged view of section B in the image;

[0036] In the diagram: 1. Central ring, 11. Assembly piece, 12. First insert, 13. First slot, 14. Second insert, 2. Mounting rod, 3. Bolt, 4. Detection rod, 41. Support piece, 42. Threaded hole, 43. Second slot, 5. Light emitter, 51. Detection light beam, 52. Projection, 521. Central color band, 522. First offset color band, 523. Second offset color band, 6. Fiber optic cable, 7. Suspension wire, 71. Plumb bob, 8. Positioning ring, 81. Spring seat, 82. Contact piece, 83. Spring, 9. Camera. Detailed Implementation

[0037] like Figures 1 to 19 As shown, the present invention includes an installation component and a detection component. The present invention will now be described in detail with reference to the accompanying drawings.

[0038] Embodiment 1 of the present invention:

[0039] like Figures 1 to 4 As shown, the optical fiber drawing verticality detection device includes an installation assembly and a detection assembly. The installation assembly includes mounting rods 2 and a circular central ring 1. Multiple mounting rods 2 are present. One end of each mounting rod 2 is fixedly connected to the side wall of the central ring 1, and the other end of each mounting rod 2 has a bolt 3. The bolt 3 secures the mounting rod 2 to the optical fiber drawing furnace, thereby fixing the detection device of this invention to the optical fiber drawing furnace via the installation assembly. The central ring 1 is concentrically arranged with the optical fiber drawing furnace. The detection assembly includes three detection rods 4 and three light emitters 5. One end of each detection rod 4 is fixedly connected to the central ring 1. The three detection rods 4 are evenly arranged on the same circumference and radially arranged along the central ring 1. The light emitters 5 are located at the top of the detection rods 4. Figure 6 As shown, the light emitter 5 is used to emit a colored detection light beam 51. Specifically, the top of the detection rod 4 has a support member 41, such as... Figure 2 As shown, the support member 41 has a horizontally arranged threaded hole 42, and the outer wall of the light emitter 5 has external threads. The light emitter 5 passes through the threaded hole 42 and is threadedly connected to the support member 41. Rotating the light emitter 5 can adjust the relative position between the light emitter 5 and the support member 41, thereby adjusting the distance between the light emitter 5 and the optical fiber, and thus adjusting the size of the projection of the detection light on the optical fiber. There are also three mounting rods 2. The three mounting rods 2 and the three detection rods 4 are evenly arranged circumferentially, that is, the mounting rods 2 and the detection rods 4 are arranged intersecting circumferentially.

[0040] like Figure 13As shown, the projection 52 of the detection ray 51 is a dot, and the detection ray 51 is green. When the detection ray is visible on the optical fiber 6, it indicates that the verticality of the optical fiber meets the requirements. Conversely, the optical fiber is misaligned. Figure 5 As shown, when the verticality of optical fiber 6 meets the requirements and optical fiber 6 is concentric with the optical fiber drawing furnace, the detection rays 51 emitted by the three optical transmitters 5 can all be positioned on optical fiber 6. Figure 6 As shown, when the optical fiber 6 is offset relative to the center of the optical fiber drawing furnace, only a portion of the detection light 51 can illuminate the optical fiber, or as... Figure 7 As shown, none of the detection rays 51 can illuminate the optical fiber 6. Therefore, the verticality of the optical fiber is determined based on whether there are detection rays 51 on the optical fiber 6 and the number of detection rays 51.

[0041] Embodiment 2 of the present invention:

[0042] like Figures 8 to 12 As shown, this is Embodiment Two of the present invention. The difference between Embodiment Two and Embodiment One is that both the installation components and the detection components are multiple. The multiple installation components are arranged sequentially from top to bottom, and a positioning component is located between any two adjacent installation components. The function of the positioning component is to ensure that the central rings of the multiple installation components are coaxially aligned vertically when the installation components are installed and fixed to the optical fiber drawing furnace, thus ensuring the concentricity of the central rings 1 of the multiple installation components. Figure 8 , Figure 9 As shown, the positioning assembly includes a plumb bob 71 and a positioning ring 8. The plumb bob 71 is attached to the bottom of the mounting rod 2 of the upper mounting assembly via a suspension line 7. Figure 10 As shown, the positioning ring 8 is fixed to the top of the mounting rod 2 of the mounting assembly located below. The positioning ring 8 has a spring 82 and a contact piece 83 inside. The inner wall of the positioning ring 8 has a plurality of spring seats 81 evenly arranged in the circumferential direction. One end of the spring 82 is fixedly connected to the spring seat 81, and the other end of the spring 82 is fixedly connected to the contact piece 83. The spring 82 has a pressure sensor.

[0043] When installing the various installation components, install the components at the top first, and then install the components at the bottom, such as... Figure 11 As shown, when the plumb bob 71 is placed between the contacts 83 within the positioning ring 8, if none of the contacts 83 are in contact with the plumb bob 71, it indicates that the upper and lower center rings 1 are concentric. Figure 12As shown, when the plumb bob 71 contacts and presses against a contact piece 83, if the pressure sensor detects that the pressure on the corresponding spring 82 exceeds a set threshold, it indicates that the central rings 1 of the upper and lower mounting components are not concentric. At this time, the position of the lower mounting component should be adjusted until the plumb bob 71 no longer contacts any of the contact pieces 83, or until the pressure detected after the plumb bob 71 deforms the spring 82 is within the set threshold. This indicates that the central rings 1 of the upper and lower mounting components are now concentric. An alarm can be set, connected to the PLC controller, which in turn is connected to the pressure sensor. The pressure sensor uploads the detected pressure to the PLC controller. When the pressure data exceeds the set threshold, the PLC controller sends a command to the alarm, triggering an alarm.

[0044] Embodiment 3 of the present invention:

[0045] like Figure 14 , Figure 15 As shown, the difference between Embodiment 3 and Embodiment 1 is that the projection 52 of the detection light 51 is a mixed color band. This projection 52 includes a central color band 521, a first offset color band 522 located on one side of the central color band 521, and a second offset color band 523 located on the other side of the central color band 521. The colors of the central color band 521 and the first offset color band 522, and the central color band 521 and the second offset color band 523 are all different. For example, the central color band 521 is green, and the first offset color band 522 and the second offset color band 523 are both red. When the detection light 51 on the optical fiber 6 is green, it indicates that the verticality of the optical fiber 6 meets the requirements. When the detection light 51 on the optical fiber 6 is red, it indicates that the optical fiber is offset.

[0046] To avoid the detection rays emitted by different light emitters 5 from intersecting and affecting observation and judgment, the heights of the light emitters 5 are different, that is, the positions of the light emitters 5 along the central ring 1 are different, which in turn causes the detection rays illuminating the optical fiber 6 to be staggered in the vertical direction.

[0047] Embodiment 4 of the present invention:

[0048] like Figure 16 As shown, the difference between Embodiment 4 and Embodiment 1 is that Embodiment 4 also includes a camera 9, which is located at the other end of the detection rod 4. The camera 9 can be fixedly connected to the other end of the detection rod 4 or installed independently. The camera 9 is used to capture the detection light beam 51 on the optical fiber 6, and the image captured by the camera 9 is magnified for easy observation.

[0049] Embodiment 5 of the present invention:

[0050] like Figures 17 to 19 As shown, the difference between Embodiment 5 and Embodiment 1 lies in the different structures of the central ring 1 and the different assembly methods of the detection rod 4 and the central ring 1. Figure 17 , Figure 19As shown, the central ring 1 comprises three identical lobes 11, as... Figure 18 As shown, the composite piece 11 has an arc-shaped structure. One end of the composite piece 11 has a first insert 12, and the other end has a first slot 13. Between adjacent composite pieces 11, as shown... Figure 19 As shown, the first insert 12 on one of the composite pieces 11 is inserted into the first slot 13 on the other composite piece 11. One end of the mounting rod 2 is fixedly connected to the middle of the composite piece 11, and one end of the detection rod 4 is inserted into the connection between the two composite pieces 11. The composite piece 11 also has second inserts 14 at both ends, which are located on the outer sidewall of the composite piece 11, as shown... Figure 19 As shown, one end of the detection rod 4 has a second slot 43, and the second inserts 14 on two adjacent assembly pieces 11 contact and are inserted into the second slot 43. The second inserts 14 on two adjacent assembly pieces 11 are spliced ​​together to form a large insert, which has the same shape as the second slot 43, thereby realizing the insertion assembly. Moreover, the second slot 43 does not penetrate the upper surface of the detection rod 4. To ensure the relative fixation of the detection rod 4 and the central ring 1, screws can also be provided between the detection rod 4 and the assembly piece 11.

[0051] When using this invention, the light transmitter 5 is turned on, and the detection light 51 is emitted to the optical fiber 6 through the light transmitter 5. By observing whether there is a detection light 51 on the optical fiber 6, that is, whether the detection light 51 is shining on the optical fiber, the verticality of the optical fiber can be determined.

[0052] This invention is fixedly installed on the fiber drawing furnace by an installation component. The central ring is installed concentrically with the fiber drawing furnace. Detection light is emitted by three light emitters. The intersection of the detection light emitted by the three light emitters is on the same vertical line as the center of the fiber drawing furnace. The verticality of the fiber is then determined by observing the projection of the detection light onto the fiber.

Claims

1. A device for detecting the verticality of optical fiber drawing, characterized in that, The system includes an installation assembly and a detection assembly. The installation assembly includes multiple installation rods and a circular central ring. One end of each installation rod is fixedly connected to the sidewall of the central ring, and the other end is fixedly connected to an optical fiber drawing furnace via bolts. The central ring is concentrically positioned with the optical fiber drawing furnace. The detection assembly includes three detection rods and three light emitters. One end of each detection rod is fixedly connected to the central ring. The three detection rods are evenly arranged on the same circumference and radially along the central ring. The light emitters are located at the top of the detection rods and emit colored detection light. The installation rods and detection rods are evenly arranged circumferentially. Multiple installation assemblies and detection assemblies are provided, arranged sequentially from top to bottom, with a distance between adjacent installation assemblies. A positioning component is provided, which ensures that after the mounting components are installed on the optical fiber drawing furnace, the central rings of multiple mounting components are coaxially aligned vertically. The positioning component includes a plumb bob and a positioning ring. The plumb bob is attached to the bottom of the mounting rod of the upper mounting component via a suspension line. The positioning ring is fixed to the top of the mounting rod of the lower mounting component. The positioning ring contains a spring and a contact plate. The inner wall of the positioning ring has multiple spring seats. One end of the spring is fixedly connected to a spring seat, and the other end of the spring is fixedly connected to a contact plate. A pressure sensor is mounted on the spring. The projection of the detected light is a mixed color band, including a central color band, a first offset color band located on one side of the central color band, and a second offset color band located on the other side of the central color band. The colors of the central color band and the first offset color band, and the colors of the central color band and the second offset color band, are all different.

2. The optical fiber drawing verticality detection device according to claim 1, characterized in that, The top of the detection rod has a support member with a horizontally arranged threaded hole. The outer wall of the light emitter has an external thread, and the light emitter passes through the threaded hole and is threadedly connected to the support member.

3. The optical fiber drawing verticality detection device according to claim 1, characterized in that, The spring seats are evenly distributed circumferentially on the inner wall of the positioning ring.

4. The optical fiber drawing verticality detection device according to claim 1, characterized in that, The light emitters are at different heights.

5. The optical fiber drawing verticality detection device according to claim 1, characterized in that, It also includes a camera, which is mounted at the other end of the detection rod.

6. The optical fiber drawing verticality detection device according to claim 1, characterized in that, The central ring comprises three identical composite pieces, each composite piece having an arc-shaped structure. One end of each composite piece has a first insert, and the other end has a first slot. Between two adjacent composite pieces, the first insert on one composite piece is inserted into the first slot on the other composite piece. One end of the mounting rod is fixedly connected to the middle of the composite piece, and one end of the detection rod is inserted into the connection between two composite pieces.

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