Automatic detection equipment for traction of optical fiber preform lathe

Abstract

The invention relates to the technical field of automatic detection of optical fiber preforms, and discloses automatic detection equipment for lathe traction of optical fiber preforms, which comprises a bracket, a melting furnace fixedly connected to the top of the bracket, a clamping system fixedly connected to the top of the bracket, and a traction system slidably connected to the bottom of the bracket, the glass bead falls under gravity to push the sliding block to slide along the sliding groove and drive the moving block to move downwards to stretch the spring, the moving block moves downwards to push the triangular block and the moving rod to move downwards, and the protruding block and the limiting groove are matched to enable the two gears to rotate reversely, drive the gear ring to rotate and drive the connecting rod to open for the glass bead to pass through. The problems that in the falling stage of the generated glass bead, the diameter of the optical fiber is far smaller than that of the glass bead, and the glass bead cannot penetrate through a centering hole of the optical fiber, so that the optical fiber is accumulated and cannot be detected are solved.

Description

Technical Field

[0001] This invention relates to the field of automatic detection technology for optical fiber preforms, specifically to an automatic detection device for traction of optical fiber preforms on a lathe. Background Technology

[0002] The testing equipment used for fiber optic preform pulling mainly includes online diameter roundness testers and refractive index distribution testers. Their core function is to monitor key physical and optical parameters in real time during the preform pulling process, promptly identifying problems such as dimensional deviations and structural inhomogeneities. This provides support for dynamic adjustments to the pulling process, thereby ensuring the consistency and performance stability of the final fiber optic product. During use, after the optical fiber preform is melted at high temperature, glass beads will be generated at the top of the molten optical fiber. Under the pull of natural gravity, the glass beads will enter the free fall stage. However, since the diameter of the optical fiber itself is much smaller than the diameter of the glass beads, the centering hole, which serves as the positioning channel for the optical fiber filament, cannot be adapted to the passage requirements of the glass beads. This makes it difficult for the glass beads to pass through the centering hole smoothly, which in turn causes the optical fiber filament to accumulate near the centering hole. Summary of the Invention

[0003] To solve the above-mentioned technical problems, the present invention provides an automatic testing device for traction of optical fiber preform lathe, including a bracket, a melting furnace fixedly connected to the top of the bracket, a clamping system fixedly connected to the top of the bracket, and a traction system slidably connected to the bottom of the bracket, and further including: The limiting mechanism is fixedly connected to the outer wall of the bracket and is used to fix the position of the device. The actuating mechanism is fixedly installed inside the limiting mechanism and is used to adjust the state of the device; The device includes several retracting mechanisms, each fixedly installed inside the limiting mechanism to ensure normal operation. The process involves clamping the optical fiber preform onto a clamping system, starting the melting furnace, and slowly feeding the optical fiber preform into the furnace. The melting furnace melts the optical fiber preform into a filamentous optical fiber, which then slowly falls. After inspection, the optical fiber cladding protective layer is introduced into the traction system, which is then started to pull the optical fiber.

[0004] Preferably, the limiting mechanism includes: The fixing component is fixedly connected to the outer wall of the bracket; There are two sliding components, both of which are fixedly installed inside the fixed component. The two sliding components are set in a mirror image, and the fixed component provides fixation for the movement of the sliding components.

[0005] Preferred driving bodies include: There are two movable components, both of which are slidably positioned inside the fixed component. A rotating component, which is fixedly installed inside the fixed component; The two moving components are set in a mirror image, and the moving components provide power for the rotation of the rotating components.

[0006] Preferably, the gathering mechanism includes; A limiting component is fixedly installed inside the rotating component; An adjustment component is fixedly installed on the outer wall of the limiting component; Among them, the movement of the restricting component can drive the adjustment component.

[0007] Preferably, the fixing component includes an extension plate fixedly connected to the outer wall of the bracket, a fixing plate fixedly connected to the outer wall of the extension plate, two sliding grooves formed on the outer wall of the fixing plate, and two sliders slidably connected to the outer wall of the fixing plate. The two slides are mirror images of each other, and the two sliders are adapted to the two slides.

[0008] Preferably, the inner wall of the fixed plate is slidably connected to two moving blocks, the outer walls of the two moving blocks are fixedly connected to springs, the outer walls of the two moving blocks are fixedly connected to fixed shafts, and the outer walls of the two fixed shafts are rotatably connected to friction plates. Two springs are fixedly connected to the fixed plate on the side away from the moving block.

[0009] Preferably, the movable component includes a triangular block slidably connected to the inner wall of the triangular block, a movable rod fixedly connected to the outer wall of the triangular block, and a spring sleeved on the outer wall of the movable rod; The outer wall of the triangular block is fixedly connected to the second spring, the moving rod passes through the extension plate, and the side of the second spring away from the triangular block is fixedly connected to the extension plate.

[0010] Preferably, the rotating assembly includes two gears rotatably connected to the outer walls of the two moving rods, and the inner walls of the two gears are provided with limit grooves. The inner wall of the extension plate is rotatably connected with a gear ring. The outer wall of the moving rod is fixed with a protruding block, which is adapted to the limiting groove. The two gears are set in a mirror image and mesh with the gear ring.

[0011] Preferably, the limiting component includes several fixed rods fixedly connected to the inner wall of the extension plate, several rotating blocks rotatably connected to the inner wall of the gear ring, and several connecting rods provided inside the extension plate; In this configuration, the inner walls of several rotating blocks are slidably connected to the outer walls of several connecting rods, and the inner walls of several connecting rods are rotatably connected to the outer walls of several fixed rods. The fixed rods are arranged in a circular array.

[0012] Preferably, the adjustment assembly includes several limiting shafts rotatably connected to the inner walls of several connecting rods, several torsion springs sleeved on the outer walls of the several limiting shafts, several limiting plates fixedly connected to the outer walls of the several limiting shafts, and several buffer pads fixedly connected to the outer walls of the several limiting plates. Several limit plates are arranged in an alternating manner.

[0013] The present invention has the following beneficial effects: (1) This invention utilizes the fact that when the optical fiber preform melts, its initial section produces a glass bead with a diameter much larger than that of a filament. As the glass bead gradually descends under gravity, it first contacts the slider. The weight of the glass bead itself presses down the slider, causing it to slide along the groove. At this time, the slider drives the moving block to move downwards. Once the two springs are stretched, when the slider moves to the curved section of the groove, the distance between the two sliders increases, and the glass bead detaches from the slider and continues to move downwards. When the moving block moves downwards and contacts the triangular block, it drives the triangular block to move downwards. When the slider moves to the curved section of the groove, the distance between the two moving blocks also increases. At this time, the bottom of the two moving blocks contacts the triangular block. Since the bottom of the moving block is an inclined surface, while the distance between the two moving blocks increases, the moving block can still push the triangular block downwards. At this time, the moving rod moves downwards. Since the protrusion on the moving rod is adapted to the limiting groove, when the moving rod moves downwards, the gear is restricted by the protrusion and the limiting groove and rotates. Since the limiting grooves on the two gears rotate in opposite directions, when the two moving rods move downwards, the two gears rotate in different directions, such as Figure 8 As shown, when the gear on the left rotates counterclockwise, the gear on the right rotates clockwise. At this time, the gear ring rotates clockwise, causing the rotating block to rotate clockwise along with the gear ring. As the rotating block gradually moves away from the fixed rod, the connecting rod slides on the rotating block, and the side of the connecting rod away from the fixed rod moves towards the inner wall of the gear ring. At this time, the connecting rod is in an open state, allowing the glass bead to pass through. After the glass bead passes through the centering hole, several springs contract, causing several moving blocks to move upwards. At this time, spring two changes from a compressed state to a free state, causing the triangular block to move upwards. At this time, the moving rod drives two gears to rotate in opposite directions. When the gear on the left rotates clockwise, the gear on the right rotates counterclockwise. At this time, the gear ring rotates counterclockwise, and the connecting rod rotates counterclockwise with the gear ring. Thus, the connecting rod changes from an open state to a retracted state, and the four limiting plates gradually move closer together, restricting the optical fiber to a designated position. Through the application of the above components, the problem of glass beads generated after the optical fiber preform melts being unable to pass through the centering hole of the optical fiber filament during the falling stage is solved. This is because the diameter of the optical fiber filament is much smaller than that of the glass beads, causing the optical fiber filament to accumulate and become undetectable. (2) The present invention utilizes the feature of the slider of the above-mentioned device to drive the moving block to move downward. When the moving block moves downward, the friction plate will rotate around the fixed axis and rotate at the contact point between the friction plate and the fixed plate because the contact point friction force is downward. Therefore, the friction plate rotates in the direction of the moving block. However, due to the limitation of the moving block, the friction plate is close to the moving block and the friction surface on the friction plate does not contact the fixed plate, allowing the moving block to move downward smoothly. When the moving block moves upward due to the contraction of the first spring, the friction plate will rotate in the direction of the fixed plate at the contact point between the friction plate and the fixed plate. At this time, the friction plate will move away from the moving block and the friction surface of the friction plate will be close to the inner wall of the fixed plate. At this time, the friction force between the friction plate and the inner wall of the fixed plate will offset part of the elastic force of the first spring, thereby reducing the upward speed of the moving block. Through the application of the above components, the problem of the glass bead passing through the slider, the slider moving upward, and the collision of the optical fiber when the slider returns to its original position due to the rapid contraction of the spring, causing the optical fiber to break, is solved. (3) Utilizing the characteristic of the gear ring rotating counterclockwise to retract the connecting rod, the four limiting plates approach the optical fiber. When the optical fiber moves downward, the diameter gauge measures the diameter of the optical fiber. When the diameter of the optical fiber is lower than the required diameter, the temperature of the melting furnace will be reduced. At this time, the diameter of the optical fiber will increase. When the section of the optical fiber with the increased diameter passes through the centering hole formed by the four limiting plates, the larger diameter section of the optical fiber contacts the limiting plate, causing the limiting plate to rotate outward, thereby compressing the torsion spring. When the larger diameter section of the optical fiber passes through the centering hole, the limiting plate is subjected to the force of the torsion spring to return. The plate retracts inward to further restrict the position of the optical fiber. When the diameter of the optical fiber is higher than the required diameter, the temperature of the melting furnace will be increased, thus reducing the diameter of the optical fiber. When the reduced diameter of the optical fiber passes through the centering hole, the torsion spring will release some force, thereby causing the four limiting plates to retract inward to further restrict the position of the optical fiber. Through the application of the above components, the problems of the optical fiber shaking in the centering hole when the furnace temperature is increased after detecting the diameter of the optical fiber and the optical fiber not being able to pass through the centering hole when the furnace temperature is decreased if the detected diameter is lower than the required diameter are solved, resulting in the accumulation of optical fiber. (4) The present invention utilizes the feature of the optical fiber passing through the centering hole of the above-mentioned device. When the optical fiber moves, it will shake. When the optical fiber moves in a certain direction, the optical fiber presses the buffer pad, causing the contact position between the buffer pad and the optical fiber to deform. It also presses the limiting plate to rotate in the direction of the optical fiber movement. At this time, due to the limitation of the torsion spring, the optical fiber only shakes slightly. And the limiting plate located on the opposite side rotates in the direction of the optical fiber movement under the drive of the relative torsion spring. This allows the optical fiber to be in close contact with the four buffer pads during the movement. Through the application of the above components, the problem of the hard structure pressing the optical fiber when the optical fiber moves, causing the optical fiber to be scratched or even broken, is solved. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a partial structural diagram of the present invention; Figure 3 This is a partial structural diagram of the present invention; Figure 4 This is a schematic cross-sectional view of the limiting mechanism of the present invention; Figure 5 For the present invention Figure 4 A magnified structural diagram of A in the middle; Figure 6 For the present invention Figure 4 A magnified structural diagram of B in the diagram; Figure 7 This is a schematic cross-sectional view of the actuation mechanism of the present invention; Figure 8 This is a schematic cross-sectional view of the actuation mechanism of the present invention; Figure 9 For the present invention Figure 8 A magnified structural diagram of C; Figure 10 This is a schematic diagram of the retraction mechanism of the present invention; Figure 11 For the present invention Figure 10 A magnified structural diagram of D in the diagram.

[0016] The attached diagram lists the components represented by each number as follows: In the diagram: 1. Limiting mechanism; 11. Fixing component; 12. Sliding component; 13. Bracket; 14. Melting furnace; 15. Clamping system; 16. Traction system; 111. Extension plate; 112. Fixing plate; 113. Slide groove; 114. Slider; 121. Moving block; 122. Spring 1; 123. Fixing shaft; 124. Friction plate; 2. Pushing mechanism; 21. Moving component; 22. Rotating component; 211. Triangular block; 212. Moving rod; 213. Spring 2; 221. Gear; 222. Limiting groove; 223. Gear ring; 3. Retracting mechanism; 31. Limiting component; 32. Adjusting component; 311. Fixing rod; 312. Rotating block; 313. Connecting rod; 321. Limiting shaft; 322. Torsion spring; 323. Limiting plate; 324. Buffer pad. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] Example 1, please refer to Figures 1-7 This invention relates to an automatic testing device for traction of optical fiber preform lathes, comprising a bracket 13, a melting furnace 14 fixedly connected to the top of the bracket 13, a clamping system 15 fixedly connected to the top of the bracket 13, and a traction system 16 slidably connected to the bottom of the bracket 13, and further comprising: Limiting mechanism 1 is fixedly connected to the outer wall of bracket 13 to fix the position of the device. The pushing mechanism 2 is fixedly installed inside the limiting mechanism 1 and is used to adjust the state of the device; The retracting mechanism 3 is provided in several units, and each of the retracting mechanisms 3 is fixedly installed inside the limiting mechanism 1 to ensure the normal operation of the device. In this process, the optical fiber preform is clamped on the clamping system 15, the melting furnace 14 is started, and the optical fiber preform is slowly fed into the melting furnace 14. The melting furnace 14 melts the optical fiber preform into a filamentous optical fiber, which is then slowly lowered. After inspection, the optical fiber cladding protective layer is introduced into the traction system 16, and the traction system 16 is started to pull the optical fiber.

[0019] Limiting mechanism 1 includes: Fixing component 11 is fixedly connected to the outer wall of bracket 13; There are two sliding components 12, and both sliding components 12 are fixedly disposed inside the fixed component 11. The two sliding components 12 are arranged in a mirror image, and the fixed component 11 provides fixation for the movement of the sliding components 12.

[0020] The driving body 2 includes; There are two movable components 21, and both movable components 21 are slidably disposed inside the fixed component 11. Rotating component 22 is fixedly disposed inside the fixed component 11; The two moving components 21 are arranged in a mirror image, and the moving components 21 provide power for the rotation of the rotating component 22.

[0021] The collection mechanism 3 includes; Restriction component 31 is fixedly disposed inside the rotation component 22; Adjustment component 32 is fixedly installed on the outer wall of restriction component 31; The movement of the limiting component 31 can drive the adjusting component 32.

[0022] Example 2, please refer to Figures 4-11 The present invention is an automatic testing device for traction of optical fiber preform lathe. Based on Example 1, the fixing component 11 includes an extension plate 111 fixedly connected to the outer wall of the bracket 13. A fixing plate 112 is fixedly connected to the outer wall of the extension plate 111. Two sliding grooves 113 are opened on the outer wall of the fixing plate 112. Two sliders 114 are slidably connected to the outer wall of the fixing plate 112. The two slides 113 are mirror images of each other, and the two sliders 114 are adapted to the two slides 113.

[0023] The inner wall of the fixed plate 112 is slidably connected to two moving blocks 121. The outer walls of the two moving blocks 121 are fixedly connected to springs 122. The outer walls of the two moving blocks 121 are fixedly connected to fixed shafts 123. The outer walls of the two fixed shafts 123 are rotatably connected to friction plates 124. Among them, the side of the two springs 122 away from the moving block 121 is fixedly connected to the fixed plate 112; As the glass bead gradually descends under the influence of gravity, it first contacts the slider 114. The weight of the glass bead presses down the slider 114, causing it to slide along the groove 113. At this time, the slider 114 drives the moving block 121 to move downwards, and the two springs 122 are stretched. When the slider 114 moves to the curved section of the groove 113, the distance between the two sliders 114 increases, and the glass bead detaches from the slider 114 and continues to move downwards. When the moving block 121 moves downwards and contacts the triangular block 211, it drives the triangular block 211 to move downwards. After the glass bead passes through the centering hole, several springs 122 contract, driving several moving blocks 121 to move upwards.

[0024] The movable component 21 includes a triangular block 211 that is slidably connected to the inner wall of the triangular block 211, a movable rod 212 that is fixedly connected to the outer wall of the triangular block 211, and a spring 213 that is sleeved on the outer wall of the movable rod 212. The outer wall of the triangular block 211 is fixedly connected to the second spring 213, the moving rod 212 passes through the extension plate 111, and the side of the second spring 213 away from the triangular block 211 is fixedly connected to the extension plate 111.

[0025] The rotating assembly 22 includes two gears 221 that are rotatably connected to the outer walls of the two moving rods 212 respectively. The inner walls of the two gears 221 are provided with limit grooves 222. The inner wall of the extension plate 111 is rotatably connected with a gear ring 223. Among them, the outer wall of the moving rod 212 is fixed with a protruding block, which is adapted to the limiting groove 222. The two gears 221 are set in a mirror image and mesh with the gear ring 223. When the moving block 121 moves downward, because the contact point between the friction plate 124 and the inner wall of the fixed plate 112 is very small, the friction plate 124 will rotate around the fixed axis 123, and rotate around the contact point between the friction plate 124 and the fixed plate 112. Since the friction force at the contact point is downward, the friction plate 124 rotates in the direction of the moving block 121. However, due to the restriction of the moving block 121, the friction plate 124 is in close contact with the moving block 121, and the friction surface on the friction plate 124 does not contact the fixed plate 112, allowing the moving block... 121 can move downward smoothly. When the moving block 121 moves upward due to the contraction of spring 122, the friction plate 124 will rotate towards the fixed plate 112 at the contact point between the friction plate 124 and the fixed plate 112. At this time, the friction plate 124 will move away from the moving block 121, and the friction surface of the friction plate 124 will be in close contact with the inner wall of the fixed plate 112. At this time, the friction between the friction plate 124 and the inner wall of the fixed plate 112 will offset part of the elastic force of spring 122, thereby reducing the upward movement speed of the moving block 121.

[0026] The limiting component 31 includes several fixed rods 311 fixedly connected to the inner wall of the extension plate 111, several rotating blocks 312 rotatably connected to the inner wall of the gear ring 223, and several connecting rods 313 are provided inside the extension plate 111. The inner walls of several rotating blocks 312 are slidably connected to the outer walls of several connecting rods 313, and the inner walls of several connecting rods 313 are rotatably connected to the outer walls of several fixed rods 311. The fixed rods 311 are arranged in a circular array.

[0027] The adjustment assembly 32 includes several limiting shafts 321 that are rotatably connected to the inner walls of several connecting rods 313, several torsion springs 322 that are sleeved on the outer walls of the several limiting shafts 321, several limiting plates 323 that are fixedly connected to the outer walls of the several limiting shafts 321, and several buffer pads 324 that are fixedly connected to the outer walls of the several limiting plates 323. Among them, several limit plates 323 are arranged in an alternating manner; Four limiting plates 323 are close to the optical fiber. When the optical fiber moves downward, the diameter gauge measures the diameter of the optical fiber. When the diameter of the optical fiber is lower than the required diameter, the temperature of the melting furnace 14 will be reduced. At this time, the diameter of the optical fiber will increase. When the section of the optical fiber with a larger diameter passes through the centering hole formed by the four limiting plates 323, the larger diameter part of the optical fiber contacts the limiting plate 323, causing the limiting plate 323 to rotate outward, thereby compressing the torsion spring 322. When the larger diameter part of the optical fiber passes through the centering hole, the limiting plate 323 is subjected to the restoring force of the torsion spring 322, and the four limiting plates 323 contract inward, continuing to restrict the position of the optical fiber. When the diameter of the optical fiber is higher than the required diameter, the temperature of the melting furnace 14 will be increased, thereby reducing the diameter of the optical fiber. When the smaller part of the optical fiber passes through the centering hole, the torsion spring 322 will release some force, thereby causing the four limiting plates 323 to contract inward, continuing to restrict the position of the optical fiber.

[0028] One specific application of this embodiment is as follows: When in use, the optical fiber preform is clamped on the clamping system 15, the melting furnace 14 is started, and the optical fiber preform is slowly fed into the melting furnace 14. The melting furnace 14 melts the optical fiber preform into a filamentous optical fiber, which slowly falls down. After inspection, the optical fiber cladding protective layer is introduced into the traction system 16, and the traction system 16 is started to pull the optical fiber. When the optical fiber preform melts, its initial section produces a glass bead with a diameter much larger than that of the filamentary optical fiber. As the glass bead gradually descends under the influence of gravity, it first contacts the slider 114. The weight of the glass bead presses down on the slider 114, causing it to slide along the groove 113. At this time, the slider 114 drives the moving block 121 to move downwards, stretching the two springs 122. When the slider 114 moves to the curved section of the groove 113, the distance between the two sliders 114 increases, causing the glass bead to detach from the slider 114 and continue moving downwards. When the moving block 121 moves downwards and contacts the triangular block 211, it causes the triangular block 211 to move downwards. When the slider 114 moves to the curved section of the groove 113, the two springs 122 are stretched. The distance between the two movable blocks 121 also increases. At this time, the lowest point of the two movable blocks 121 contacts the triangular block 211. Since the lowest point of the movable blocks 121 is an inclined surface, while the distance between the two movable blocks 121 increases, the movable blocks 121 can still push the triangular block 211 downward. At this time, the movable rod 212 moves downward. Since the protrusion on the movable rod 212 matches the limiting groove 222, when the movable rod 212 moves downward, the gear 221 is restricted by the protrusion and the limiting groove 222 and rotates. Since the limiting grooves 222 on the two gears 221 rotate in opposite directions, when the two movable rods 212 move downward, the two gears 221 rotate in different directions. Figure 8As shown, when the gear 221 on the left rotates counterclockwise, the gear 221 on the right rotates clockwise. At this time, the gear ring 223 rotates clockwise, causing the rotating block 312 to rotate clockwise along with the gear ring 223. As the rotating block 312 gradually moves away from the fixed rod 311, the connecting rod 313 slides on the rotating block 312, and the side of the connecting rod 313 away from the fixed rod 311 moves towards the inner wall of the gear ring 223. At this time, the connecting rod 313 is in an open state, allowing the glass bead to pass through. After the glass bead passes through the centering hole, several springs 122 contract, causing several moving blocks 121 to move upward. At this time, spring 213 changes from a compressed state to a free state. The state causes the triangular block 211 to move upward, and at this time the moving rod 212 drives two gears to rotate in opposite directions. That is, when the gear 221 on the left rotates clockwise, the gear 221 on the right rotates counterclockwise. At this time, the gear ring 223 rotates counterclockwise, and the connecting rod 313 rotates counterclockwise with the gear ring 223. Thus, the connecting rod 313 changes from the open state to the contracted state, and the four limiting plates 323 gradually move closer together, restricting the optical fiber to the designated position. This solves the problem that after the optical fiber preform melts, the glass beads generated during the falling stage cannot pass through the centering hole of the optical fiber because the diameter of the optical fiber is much smaller than the glass beads, causing the optical fiber to accumulate and become undetectable. Utilizing the characteristic of the aforementioned device where slider 114 drives moving block 121 downwards, when moving block 121 moves downwards, due to the small contact point between friction plate 124 and the inner wall of fixed plate 112, friction plate 124 will rotate around fixed axis 123, rotating at the contact point between friction plate 124 and fixed plate 112. Because of the downward friction at the contact point, the direction of rotation of friction plate 124 is towards moving block 121. However, due to the constraint of moving block 121, friction plate 124 is tightly attached to moving block 121, and the friction surface on friction plate 124 does not contact fixed plate 112, allowing moving block 121 to move smoothly downwards. 1. When the spring 122 contracts and moves upward, the friction plate 124 will rotate towards the fixed plate 112 at the contact point between the friction plate 124 and the fixed plate 112. At this time, the friction plate 124 will move away from the moving block 121, and the friction surface of the friction plate 124 will be in close contact with the inner wall of the fixed plate 112. At this time, the friction between the friction plate 124 and the inner wall of the fixed plate 112 will offset part of the elastic force of the spring 122, thereby reducing the upward speed of the moving block 121. This solves the problem that when the glass bead passes through the slider 114, the slider 114 moves upward, and due to the rapid contraction of the spring, the slider 114 returns to its original position and collides with the optical fiber, causing the optical fiber to break. Utilizing the counterclockwise rotation of the gear ring 223 in the aforementioned device, which causes the connecting rod 313 to retract, the four limiting plates 323 approach the optical fiber. As the optical fiber moves downward, the diameter gauge measures the diameter of the optical fiber. When the diameter of the optical fiber is lower than the required diameter, the temperature of the melting furnace 14 is reduced. At this time, the diameter of the optical fiber increases. When the section of the optical fiber with the increased diameter passes through the centering hole formed by the four limiting plates 323, the larger diameter section of the optical fiber contacts the limiting plate 323, causing the limiting plate 323 to rotate outward, thereby compressing the torsion spring 322. When the larger diameter section of the optical fiber passes through the centering hole, the limiting plate 323 is subjected to torsion. The force of the spring 322 resetting causes the four limiting plates 323 to retract inward, continuing to restrict the position of the optical fiber. When the diameter of the optical fiber is higher than the required diameter, the temperature of the melting furnace 14 will be increased, thus reducing the diameter of the optical fiber. When the reduced diameter of the optical fiber passes through the centering hole, the torsion spring 322 will release some force, thereby causing the four limiting plates 323 to retract inward, continuing to restrict the position of the optical fiber. This solves the problems of the optical fiber shaking in the centering hole when the furnace temperature is increased after detecting the diameter of the optical fiber and the optical fiber not being able to pass through the centering hole when the furnace temperature is lowered if the detected diameter is lower than the required diameter, resulting in the accumulation of optical fiber. Utilizing the characteristic of the optical fiber passing through the centering hole in the above-mentioned device, when the optical fiber moves, it will sway. As the optical fiber moves in a certain direction, it presses against the buffer pad 324, causing deformation at the contact point between the buffer pad 324 and the optical fiber. This also causes the limiting plate 323 to rotate in the direction of the optical fiber's movement. At this time, due to the restriction of the torsion spring 322, the optical fiber only sways slightly. Furthermore, the limiting plate 323, located opposite to the torsion spring 322, rotates in the direction of the optical fiber's movement. This ensures that the optical fiber can closely adhere to the four buffer pads 324 during movement, solving the problem of the hard structure pressing on the optical fiber when it moves, which could cause scratches or even breakage.

[0029] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. An automatic testing device for traction of an optical fiber preform lathe, comprising a bracket (13), wherein a melting furnace (14) is fixedly connected to the top of the bracket (13), a clamping system (15) is fixedly connected to the top of the bracket (13), and a traction system (16) is slidably connected to the bottom of the bracket (13), characterized in that, Also includes: The limiting mechanism (1) is fixedly connected to the outer wall of the bracket (13) to fix the position of the device; A pushing mechanism (2) is fixedly installed inside the limiting mechanism (1) and is used to adjust the state of the device; A gathering mechanism (3) is provided, and several gathering mechanisms (3) are fixedly installed inside the limiting mechanism (1) to ensure the normal operation of the device; In this process, the optical fiber preform is clamped on the clamping system (15), the melting furnace (14) is started, and the optical fiber preform is slowly fed into the melting furnace (14). The melting furnace (14) melts the optical fiber preform into a filamentous optical fiber, which slowly falls down. After inspection, the optical fiber cladding protective layer is introduced into the traction system (16), and the traction system (16) is started to pull the optical fiber.

2. The automatic testing equipment for optical fiber preform lathe traction according to claim 1, characterized in that: The limiting mechanism (1) includes: Fixing component (11), which is fixedly connected to the outer wall of bracket (13); Two sliding components (12) are provided, and both sliding components (12) are fixedly disposed inside the fixed component (11); The two sliding components (12) are set in a mirror image, and the fixed component (11) provides fixation for the movement of the sliding components (12).

3. The automatic testing equipment for optical fiber preform lathe traction according to claim 2, characterized in that: The propulsion mechanism (2) includes; Two movable components (21) are provided, and both movable components (21) are slidably disposed inside the fixed component (11); Rotating assembly (22), which is fixedly disposed inside the fixed assembly (11); Among them, the two moving components (21) are set in a mirror image, and the moving components (21) provide power for the rotation of the rotating components (22).

4. The automatic testing equipment for optical fiber preform lathe traction according to claim 3, characterized in that: The gathering mechanism (3) includes; A limiting component (31) is fixedly disposed inside the rotating component (22); Adjustment component (32), which is fixedly disposed on the outer wall of the limiting component (31); The movement of the limiting component (31) can drive the adjusting component (32).

5. An automatic testing device for optical fiber preform lathe traction according to claim 4, characterized in that: The fixing component (11) includes an extension plate (111) fixedly connected to the outer wall of the bracket (13). A fixing plate (112) is fixedly connected to the outer wall of the extension plate (111). Two sliding grooves (113) are opened on the outer wall of the fixing plate (112). Two sliders (114) are slidably connected to the outer wall of the fixing plate (112). Among them, the two slides (113) are set in a mirror image, and the two sliders (114) are adapted to the two slides (113).

6. The automatic testing equipment for optical fiber preform lathe traction according to claim 5, characterized in that: The inner wall of the fixed plate (112) is slidably connected to two moving blocks (121), the outer walls of the two moving blocks (121) are fixedly connected to springs (122), the outer walls of the two moving blocks (121) are fixedly connected to fixed shafts (123), and the outer walls of the two fixed shafts (123) are rotatably connected to friction plates (124). Among them, the side of the two springs (122) away from the moving block (121) is fixedly connected to the fixed plate (112).

7. An automatic testing device for optical fiber preform lathe traction according to claim 6, characterized in that: The moving component (21) includes a triangular block (211) slidably connected to the inner wall of the triangular block (211), and a moving rod (212) fixedly connected to the outer wall of the triangular block (211). A spring (213) is sleeved on the outer wall of the moving rod (212). The outer wall of the triangular block (211) is fixedly connected to the second spring (213), the moving rod (212) passes through the extension plate (111), and the side of the second spring (213) away from the triangular block (211) is fixedly connected to the extension plate (111).

8. An automatic testing device for optical fiber preform lathe traction according to claim 5, characterized in that: The rotating assembly (22) includes two gears (221) that are rotatably connected to the outer walls of the two moving rods (212), and the inner walls of the two gears (221) are provided with limit grooves (222). The inner wall of the extension plate (111) is rotatably connected with a gear ring (223). Among them, the outer wall of the moving rod (212) is fixed with a protruding block, which is adapted to the limiting groove (222). The two gears (221) are set in a mirror image and mesh with the gear ring (223).

9. An automatic testing device for optical fiber preform lathe traction according to claim 8, characterized in that: The limiting component (31) includes several fixed rods (311) fixedly connected to the inner wall of the extension plate (111), several rotating blocks (312) rotatably connected to the inner wall of the gear ring (223), and several connecting rods (313) are provided inside the extension plate (111). Among them, the inner walls of several rotating blocks (312) are slidably connected to the outer walls of several connecting rods (313), the inner walls of several connecting rods (313) are rotatably connected to the outer walls of several fixed rods (311), and the several fixed rods (311) are arranged in a circular array.

10. An automatic testing device for optical fiber preform lathe traction according to claim 4, characterized in that: The adjustment assembly (32) includes a plurality of limiting shafts (321) rotatably connected to the inner walls of a plurality of connecting rods (313), a plurality of torsion springs (322) sleeved on the outer walls of the plurality of limiting shafts (321), a plurality of limiting plates (323) fixedly connected to the outer walls of the plurality of limiting shafts (321), and a plurality of buffer pads (324) fixedly connected to the outer walls of the plurality of limiting plates (323). Among them, several of the limiting plates (323) are arranged alternately.

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