A centering chucking device for optical fiber processing

Abstract

This invention relates to the field of optical fiber positioning and clamping technology, and more particularly to a centering and clamping device for optical fiber processing, comprising a main body cylinder with open ends. A movable clamping mechanism is provided at the upper end of the main body cylinder. The movable clamping mechanism includes a first fixing ring fixedly disposed at the upper end of the main body cylinder, a protective cover connected to the upper end of the first fixing ring, a first slot formed at the lower end of the protective cover, a first fixed body rotatably connected to the protective cover within the first slot, a first motor fixedly connected to the upper end of the protective cover, and a drive shaft of the first motor fixedly connected to the upper end of the first fixed body. A rotational calibration and temperature control mechanism is connected to the lower end of the main body cylinder. When a laser rangefinder detects a deviation in a segment of optical fiber, the controller controls the flow rate of the electromagnetic control valve to change, using a blowing force to correct the deviation of the optical fiber, thereby improving the quality of the optical fiber.

Description

Technical Field

[0001] This invention relates to the field of optical fiber positioning and clamping technology, and in particular to a centering clamping device for optical fiber processing. Background Technology

[0002] Optical fiber, or optical waveguide fiber, is a tool that uses the principle of total internal reflection of light within fibers made of glass or plastic to achieve light transmission. During fiber fabrication, a preform is heated to a high temperature to soften it, and then drawn into a slender optical fiber at a specific speed using a drawing machine. During the drawing process, parameters such as temperature, drawing speed, and tension need to be precisely controlled to ensure uniform fiber diameter and stable performance. A cooling mechanism is installed below the drawing mechanism to rapidly cool the drawn fiber. Special optical fibers use preforms made of quartz glass doped with rare earth elements, such as erbium (Er), ytterbium (Yb), and neodymium (Nd), which enables the fiber to have optical amplification capabilities.

[0003] Due to the uneven distribution of rare earth elements in the special optical fiber preform, the density within the preform varies. During the gravity-drawing process, these different densities may cause the drawn optical fiber to shift. Existing technologies cannot vertically align the optical fiber during the drawing process, resulting in a high defect rate for the characteristic optical fiber. In existing cooling mechanisms, wind may cause the drawn optical fiber to shift, leading to low reliability. Furthermore, existing clamping mechanisms cannot move and cannot adjust to the shortening of the preform during operation. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of the prior art by proposing a centering clamping device for optical fiber processing.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows: a centering clamping device for optical fiber processing, comprising a main body cylinder, the upper and lower ends of which are open structures, a movable clamping mechanism provided at the upper end of the main body cylinder, the movable clamping mechanism comprising a first fixing ring fixedly disposed at the upper end of the main body cylinder, a protective cover connected to the upper end of the first fixing ring, a first slot provided at the lower end of the protective cover, a first fixing body rotatably connected to the protective cover in the first slot, a first motor fixedly connected to the upper end of the protective cover, the transmission shaft end of the first motor fixedly connected to the upper end of the first fixing body, and a rotation calibration and temperature control mechanism connected to the lower end of the main body cylinder.

[0006] Preferably, the lower end of the first fixing body is provided with four second slots distributed at equal angles. The first fixing body is fixedly connected to the first electric telescopic rod in each of the four second slots. The telescopic ends of the four first electric telescopic rods are fixedly connected to the limit plates. The sides of the four limit plates are slidably fitted with the second slots. The sides of the four limit plates are fixedly connected to the flexible plates.

[0007] Preferably, four second motors are fixedly connected to the inner side of the first fixing ring at an angle near the upper end. The drive shaft ends of the four second motors are respectively fixedly connected to threaded rods. The sides of the four threaded rods are respectively connected to limit blocks. The ends of the four limit blocks are respectively in contact with the inner side of the first fixing ring. The inner sides of the four limit blocks are respectively provided with third slots. The four limit blocks are respectively fixedly connected to second electric telescopic rods in the third slots. The telescopic ends of the four second electric telescopic rods are respectively fixedly connected to arc-shaped clamping pieces.

[0008] Preferably, the upper end of the first fixing ring is provided with a threaded groove, and the first fixing ring is rotatably connected to a first connecting ring in the threaded groove. The upper end of the first connecting ring is fixedly connected to the lower end of the protective cover. The upper end of the main body cylinder is provided with four fourth slots distributed at equal angles. Pressure sensors are fixedly connected to the four fourth slots respectively. Support rods are fixedly connected to the upper ends of the four pressure sensors respectively. The upper ends of the four support rods are fixedly connected to the lower end of the first fixing ring.

[0009] Preferably, the rotation calibration temperature control mechanism includes a second fixing ring fixedly disposed at the lower end of the main body cylinder, a rotating cylinder rotatably connected to the inner side of the second fixing ring, a plurality of laser rangefinders distributed at equal angles connected to the inner side of the rotating cylinder, a first limiting groove opened on the inner side of the main body cylinder, a limiting body fixedly connected to the upper end of the rotating cylinder and rotatingly cooperating with the first limiting groove, and a heating ring fixedly connected to the inner side of the limiting body.

[0010] Preferably, a fixed shell is fixedly connected to the outer side of the second fixed ring, and a plurality of second limiting grooves are provided on the inner side of the rotating cylinder near the fixed shell. Electromagnetic control valves are fixedly connected to the plurality of second limiting grooves respectively. A cavity communicating with the second limiting groove is provided on the outer side of the rotating cylinder and the inner side of the second fixed ring. A first through hole communicating with the inside of the fixed shell is provided in the second fixed ring.

[0011] Preferably, a third limiting groove is provided inside the fixed shell, and a filter mechanism and a cooler are fixedly connected to the fixed shell inside the third limiting groove. An air inlet is provided on the outer side of the fixed shell to connect with an external air supply pipe.

[0012] Preferably, the lower end of the second fixed ring is fixedly connected to a third fixed ring connected to the wire drawing tower, the lower end of the rotating cylinder is fixedly connected to a connecting body, the lower end of the connecting body is fixedly connected to a second connecting ring, the side of the second connecting ring is fixedly connected to a toothed ring, the outer side of the third fixed ring has a second through hole near the second connecting ring, the outer side of the third fixed ring is fixedly connected to a support body, the support body is connected to a third motor, and the drive shaft end of the third motor is fixedly connected to a gear that meshes with the toothed ring.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. The drive shafts of several second motors drive threaded rods to rotate. These threaded rods work together to move the limiting block to a position close to the lower end of the preform. Then, the second electric telescopic rods extend simultaneously. These second electric telescopic rods drive the arc-shaped clamping plates to clamp the surface of the preform. Before clamping, the first motor starts and drives the first fixed body to rotate, thereby driving the preform to rotate. The arc-shaped clamping plates are used for electrostatic adsorption of impurities. At this time, the arc-shaped clamping plates can adsorb and remove dust and other impurities from the surface of the preform, improving the quality of optical fiber production. At the same time, during the use of the preform, the second motors drive the second electric telescopic rods to move upward to ensure that the lower end of the surface of the preform can also be stably clamped.

[0015] 2. The electromagnetic control valve is connected to the laser rangefinder through a controller. When the rotating laser rangefinder detects that the side of the optical fiber is flat, the flow rate of several electromagnetic control valves is the same, which can ensure that the optical fiber will not be deviated during the cooling airflow cooling the optical fiber. When the laser rangefinder detects that a certain section of the optical fiber has deviated, the controller controls the flow rate of the electromagnetic control valve to change, and uses the blowing force to straighten the deviated optical fiber, improve the quality of the optical fiber, and cool the light at the same time.

[0016] 3. The pressure sensor readings ensure that the preform is in a numerical state. When the preform shifts at the fusion point due to internal density differences, the four second electric telescopic rods extend and retract to make the fusion point of the preform collinear with the center of the drawing tower, thus reducing the defect rate of the optical fiber. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2 This is a cross-sectional view of the entire invention. Figure 1 ;

[0019] Figure 3 This is a cross-sectional view of the entire invention. Figure 2 ;

[0020] Figure 4 For the present invention Figure 2 Enlarged view of point A;

[0021] Figure 5 For the present invention Figure 2 Enlarged view of point B;

[0022] Figure 6 For the present invention Figure 2 Enlarged view of point C;

[0023] Figure 7 For the present invention Figure 2 Enlarged view of point D;

[0024] Figure 8 For the present invention Figure 2 Enlarged view of point E.

[0025] 1. Main body cylinder; 2. Moving clamping mechanism; 3. Rotating calibration and temperature control mechanism; 21. First fixing ring; 22. Protective cover; 23. First motor; 24. Threaded groove; 25. First connecting ring; 26. First slot; 27. First fixing body; 28. First electric telescopic rod; 29. ​​Second slot; 210. Limiting plate; 211. Flexible plate; 212. Second motor; 213. Threaded rod; 214. Limiting block; 215. Third slot; 216. Second electric telescopic rod; 217. Arc-shaped clamping piece; 218. Support rod; 219. Fourth slot; 220. Pressing... Force sensor; 31. Second fixed ring; 32. Rotating cylinder; 33. Laser rangefinder; 34. First limiting groove; 35. Limiting body; 36. Heating ring; 37. Second limiting groove; 38. Electromagnetic control valve; 39. Cavity; 310. First through hole; 311. Fixed shell; 312. Air inlet; 313. Third limiting groove; 314. Cooler; 315. Filter mechanism; 316. Third fixed ring; 317. Connecting body; 318. Second connecting ring; 319. Gear ring; 320. Second through hole; 321. Gear; 322. Support body; 323. Third motor. Detailed Implementation

[0026] The following description is intended to disclose the invention and enable those skilled in the art to implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art.

[0027] Please see Figures 1-8 A centering clamping device for optical fiber processing includes a main body cylinder 1, the upper and lower ends of which are open structures, and a movable clamping mechanism 2 is provided at the upper end of the main body cylinder 1.

[0028] In this embodiment, the movable clamping mechanism 2 includes a first fixing ring 21 fixedly disposed on the upper end of the main body cylinder 1. A protective cover 22 is connected to the upper end of the first fixing ring 21. A first slot 26 is opened at the lower end of the protective cover 22. A first fixing body 27 is rotatably connected to the protective cover 22 in the first slot 26. A first motor 23 is fixedly connected to the upper end of the protective cover 22. The transmission shaft end of the first motor 23 is fixedly connected to the upper end of the first fixing body 27.

[0029] The lower end of the first fixing body 27 is provided with four second slots 29 distributed at equal angles. The first fixing body 27 is fixedly connected to the first electric telescopic rod 28 in the four second slots 29 respectively. The telescopic ends of the four first electric telescopic rods 28 are fixedly connected to the limiting plates 210 respectively. The sides of the four limiting plates 210 are slidably engaged with the second slots 29. The sides of the four limiting plates 210 are fixedly connected to the flexible plates 211 respectively.

[0030] Four second motors 212, evenly distributed at an angle, are fixedly connected to the inner side of the first fixing ring 21 near the upper end. Threaded rods 213 are fixedly connected to the drive shaft ends of the four second motors 212. Limiting blocks 214 are respectively connected to the sides of the four threaded rods 213. The ends of the four limiting blocks 214 contact the inner side of the first fixing ring 21. Third slots 215 are respectively opened on the inner sides of the four limiting blocks 214. Second electric telescopic rods 216 are fixedly connected to the three slots 215 of the four limiting blocks 214. Arc-shaped clamping pieces 217 are fixedly connected to the telescopic ends of the four second electric telescopic rods 216.

[0031] The upper end of the first fixing ring 21 is provided with a threaded groove 24. The first fixing ring 21 is rotatably connected to a first connecting ring 25 within the threaded groove 24. The upper end of the first connecting ring 25 is fixedly connected to the lower end of the protective cover 22. The upper end of the main body cylinder 1 is provided with four equally angled fourth slots 219. Pressure sensors 220 are fixedly connected to the four fourth slots 219 respectively. Support rods 218 are fixedly connected to the upper ends of the four pressure sensors 220 respectively. The upper ends of the four support rods 218 are fixedly connected to the lower end of the first fixing ring 21.

[0032] Specifically, several first electric telescopic rods 28 drive the limiting plate 210 to move inward. The limiting plate 210 clamps and limits the surface of the preform through the flexible plate 211. Then, the first connecting ring 25 at the lower end of the protective cover 22 is rotated and fitted into the threaded groove 24. Then, several second motors 212 are started. The drive shaft ends of the several second motors 212 drive the threaded rods 213 to rotate. The several threaded rods 213 cooperate to drive the limiting block 214 to move to a position close to the lower end of the preform. Then, the second electric telescopic rods 216 are extended at the same time. The several second electric telescopic rods 216 drive the arc-shaped clamping piece 217 to clamp the surface of the preform.

[0033] In this embodiment, a rotation calibration and temperature control mechanism 3 is connected to the lower end of the main body cylinder 1. The rotation calibration and temperature control mechanism 3 includes a second fixing ring 31 fixedly disposed at the lower end of the main body cylinder 1. A rotating cylinder 32 is rotatably connected to the inner side of the second fixing ring 31. A plurality of laser rangefinders 33 distributed at equal angles are connected to the inner side of the rotating cylinder 32. A first limiting groove 34 is opened on the inner side of the main body cylinder 1. A limiting body 35 that rotatably cooperates with the first limiting groove 34 is fixedly connected to the upper end of the rotating cylinder 32. A heating ring 36 is fixedly connected to the inner side of the limiting body 35.

[0034] A fixed shell 311 is fixedly connected to the outer side of the second fixed ring 31. A plurality of second limiting grooves 37 are provided on the inner side of the rotating cylinder 32 near the fixed shell 311. Electromagnetic control valves 38 are fixedly connected to the plurality of second limiting grooves 37 respectively. A cavity 39 communicating with the second limiting grooves 37 is provided on the outer side of the rotating cylinder 32 and the inner side of the second fixed ring 31. A first through hole 310 communicating with the inside of the fixed shell 311 is provided in the cavity 39 of the second fixed ring 31.

[0035] The fixed shell 311 has a third limiting groove 313 inside, and a filter mechanism 315 and a cooler 314 are fixedly connected in the third limiting groove 313. The outer side of the fixed shell 311 has an air inlet 312 that is connected to an external air supply pipe.

[0036] The lower end of the second fixing ring 31 is fixedly connected to a third fixing ring 316 connected to the wire drawing tower. The lower end of the rotating cylinder 32 is fixedly connected to a connecting body 317. The lower end of the connecting body 317 is fixedly connected to a second connecting ring 318. A toothed ring 319 is fixedly connected to the side of the second connecting ring 318. A second through hole 320 is opened through the outer side of the third fixing ring 316 near the second connecting ring 318. A support body 322 is fixedly connected to the outer side of the third fixing ring 316. A third motor 323 is connected inside the support body 322. A gear 321 that meshes with the toothed ring 319 is fixedly connected to the drive shaft end of the third motor 323.

[0037] Specifically, outside air is cooled by the cooler 314 and enters the first through hole 310 after impurities are removed by the filter mechanism 315. The airflow in the first through hole 310 is ejected through several electromagnetic control valves 38. The electromagnetic control valves 38 are connected to the laser rangefinder 33 through a controller. When the rotating laser rangefinder 33 detects that the side of the optical fiber is flat, the flow rate of the several electromagnetic control valves 38 is the same, which can ensure that the optical fiber will not be deflected during the cooling process.

[0038] In use, the third fixing ring 316 at the lower end of the second fixing ring 31 is connected to the upper end of the drawing tower. Then, the preform end of the special optical fiber is placed at the lower end of the first fixing body 27. Then, several first electric telescopic rods 28 are extended, and the several first electric telescopic rods 28 drive the limiting plate 210 to move inward. The limiting plate 210 clamps and limits the surface of the preform through the flexible plate 211. Then, the first connecting ring 25 at the lower end of the protective cover 22 is rotated into the threaded groove 24. Then, several second motors 212 are started. The drive shaft ends of the several second motors 212 drive the threaded rods 213 to rotate. The several threaded rods 213 cooperate to drive the limiting block 214 to move close to the At the lower end of the preform, the second electric telescopic rod 216 extends simultaneously. Several second electric telescopic rods 216 drive the arc-shaped clamping piece 217 to clamp the surface of the preform. Before clamping, the first motor 23 starts and drives the first fixed body 27 to rotate, thereby driving the preform to rotate. The arc-shaped clamping piece 217 is used for electrostatic adsorption of impurities. At this time, the arc-shaped clamping piece 217 can adsorb and remove dust and other impurities on the surface of the preform, improving the quality of optical fiber production. At the same time, during the use of the preform, several second motors 212 drive the second electric telescopic rods 216 to move upward, ensuring that the lower end of the surface of the preform can also be stably clamped, improving the reliability of the device.

[0039] When the dripping optical fiber passes through the rotating cylinder 32 for cooling, the outside air is cooled by the cooler 314 and then enters the first through hole 310 after impurities are removed by the filter mechanism 315. The airflow in the first through hole 310 is ejected through several electromagnetic control valves 38. The electromagnetic control valves 38 are connected to the laser rangefinder 33 through a controller. When the rotating laser rangefinder 33 detects that the side of the optical fiber is flat, the flow rate of the several electromagnetic control valves 38 is the same, which can ensure that the optical fiber will not be deviated during the cooling process. When the laser rangefinder 33 detects that a certain section of the optical fiber has deviated, the controller controls the flow rate of the electromagnetic control valves 38 to change, and the deviated optical fiber is straightened by the blowing force, thereby improving the quality of the optical fiber.

[0040] During fiber drawing, the pressure sensor 220 ensures that the preform is in the correct numerical state. When the preform shifts at the fusion point due to internal density differences, the four second electric telescopic rods 216 extend and retract to make the fusion point of the preform collinear with the center of the drawing tower, thereby reducing the defect rate of the optical fiber.

[0041] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention. The scope of protection claimed by the appended claims and their equivalents is defined.

Claims

1. A centering and clamping device for optical fiber processing, comprising a main body cylinder (1), characterized in that: The main body cylinder (1) has open ends at both the top and bottom. A movable clamping mechanism (2) is provided at the upper end of the main body cylinder (1). The movable clamping mechanism (2) includes a first fixing ring (21) fixedly disposed at the upper end of the main body cylinder (1). A protective cover (22) is connected to the upper end of the first fixing ring (21). A first slot (26) is opened at the lower end of the protective cover (22). A first fixing body (27) is rotatably connected to the protective cover (22) within the first slot (26). A first motor (23) is fixedly connected to the upper end of the protective cover (22). The drive shaft end of the first motor (23) is fixedly connected to the upper end of the first fixing body (27). The main body cylinder (1) The lower end of the first fixed ring (21) is connected to a rotating calibration temperature control mechanism (3). Four second motors (212) are fixedly connected at equal angles near the upper end of the inner side of the first fixed ring (21). The drive shaft ends of the four second motors (212) are respectively fixedly connected to threaded rods (213). The sides of the four threaded rods (213) are respectively connected to limit blocks (214). The ends of the four limit blocks (214) are respectively in contact with the inner side of the first fixed ring (21). The inner side of the four limit blocks (214) is respectively provided with a third slot (215). The four limit blocks (214) are respectively fixedly connected to the second motors (212) in the third slot (215). Telescopic rods (216), the telescopic ends of the four second electric telescopic rods (216) are respectively fixedly connected with arc-shaped clamping plates (217), the upper end of the first fixing ring (21) is provided with a threaded groove (24), the first fixing ring (21) is rotatably connected with a first connecting ring (25) in the threaded groove (24), the upper end of the first connecting ring (25) is fixedly connected with the lower end of the protective cover (22), the upper end of the main body cylinder (1) is provided with four equally angled fourth slots (219), the four fourth slots (219) are respectively fixedly connected with pressure sensors (220), the upper ends of the four pressure sensors (220) are respectively fixedly connected with support rods ( 218), the upper ends of the four support rods (218) are fixedly connected to the lower end of the first fixed ring (21). The rotation calibration temperature control mechanism (3) includes a second fixed ring (31) fixedly set at the lower end of the main body cylinder (1). A rotating cylinder (32) is rotatably connected to the inner side of the second fixed ring (31). A number of laser rangefinders (33) with equal angle distribution are connected to the inner side of the rotating cylinder (32). A first limiting groove (34) is opened on the inner side of the main body cylinder (1). A limiting body (35) that rotates with the first limiting groove (34) is fixedly connected to the upper end of the rotating cylinder (32). A heating ring (36) is fixedly connected to the inner side of the limiting body (35).

2. The centering and clamping device for optical fiber processing according to claim 1, characterized in that: The lower end of the first fixing body (27) is provided with four second slots (29) distributed at equal angles. The first fixing body (27) is fixedly connected to the first electric telescopic rod (28) in the four second slots (29). The telescopic ends of the four first electric telescopic rods (28) are fixedly connected to the limiting plates (210). The sides of the four limiting plates (210) are slidably fitted with the second slots (29). The sides of the four limiting plates (210) are fixedly connected to the flexible plates (211).

3. The centering and clamping device for optical fiber processing according to claim 1, characterized in that: A fixed shell (311) is fixedly connected to the outer side of the second fixed ring (31). Several second limiting grooves (37) are provided on the inner side of the rotating cylinder (32) near the fixed shell (311). Electromagnetic control valves (38) are fixedly connected in the several second limiting grooves (37). A cavity (39) communicating with the second limiting groove (37) is provided on the outer side of the rotating cylinder (32) and the inner side of the second fixed ring (31). A first through hole (310) communicating with the cavity (39) and the interior of the fixed shell (311) is provided in the second fixed ring (31).

4. A centering and clamping device for optical fiber processing according to claim 3, characterized in that: The fixed shell (311) has a third limiting groove (313) inside. The fixed shell (311) has a filter mechanism (315) and a cooler (314) fixedly connected inside the third limiting groove (313). The outer side of the fixed shell (311) has an air inlet (312) connected to an external air supply pipe.

5. A centering and clamping device for optical fiber processing according to claim 1, characterized in that: The lower end of the second fixed ring (31) is fixedly connected to a third fixed ring (316) connected to the drawing tower. The lower end of the rotating cylinder (32) is fixedly connected to a connecting body (317). The lower end of the connecting body (317) is fixedly connected to a second connecting ring (318). The side of the second connecting ring (318) is fixedly connected to a toothed ring (319). The outer side of the third fixed ring (316) has a second through hole (320) at a position close to the second connecting ring (318). The outer side of the third fixed ring (316) is fixedly connected to a support body (322). The support body (322) is connected to a third motor (323). The drive shaft end of the third motor (323) is fixedly connected to a gear (321) that meshes with the toothed ring (319).

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