阅读说明：本技术 一种矫正光纤预制棒跳动的装置及其矫正方法 (Device and method for correcting optical fiber preform jumping ) 是由 沈小平 梁伟 马逸聪 朱陈明 朱志远 陈尚佳 杨意 谢晓寒 于 2020-11-25 设计创作，主要内容包括：本发明公开了一种矫正光纤预制棒跳动的装置及其矫正方法,包括火焰车床平台与矫正装置；火焰车床平台两端分别设有座架,其中一个座架为移动座架,一个座架为固定座架,移动座架能够在火焰车床平台的轨道上滑动；两个座架分别对应安设有同轴线的旋转夹头；旋转夹头与同步旋转驱动机构相连；火焰车床平台上设置喷灯平台和移动滑台,喷灯平台可移动地设置在旋转夹头同轴线的下方,且喷灯的喷嘴轴线呈45度角倾斜指向旋转夹头同轴线；喷灯平台及移动滑台能够在火焰车床平台的轨道上往复运动；矫正装置固定在移动滑台上,安设在旋转夹头同轴线的下方；矫正装置包括升降平台和设置于升降平台上的矫正石墨块。本发明能够提高矫正效率,保证矫正的质量。(The invention discloses a device for correcting the runout of an optical fiber preform and a correction method thereof, wherein the device comprises a flame lathe platform and a correction device; two ends of the flame lathe platform are respectively provided with a seat frame, one of the seat frames is a movable seat frame, the other seat frame is a fixed seat frame, and the movable seat frame can slide on a track of the flame lathe platform; the two seat frames are respectively and correspondingly provided with a coaxial rotary chuck; the rotary chuck is connected with the synchronous rotation driving mechanism; a blowtorch platform and a movable sliding table are arranged on the flame lathe platform, the blowtorch platform is movably arranged below the coaxial line of the rotary chuck, and the axis of a nozzle of the blowtorch is inclined at an angle of 45 degrees and points to the coaxial line of the rotary chuck; the blowtorch platform and the movable sliding table can reciprocate on the track of the flame lathe platform; the correcting device is fixed on the movable sliding table and is arranged below the coaxial line of the rotary chuck; the correcting device comprises a lifting platform and a correcting graphite block arranged on the lifting platform. The invention can improve the correction efficiency and ensure the correction quality.)

1. The device for correcting the runout of the optical fiber preform is characterized by comprising a flame lathe platform (1) and a correcting device;

two ends of the flame lathe platform (1) are respectively provided with a seat frame, wherein one seat frame is a movable seat frame, and the other seat frame is a fixed seat frame (2); the two seat frames are respectively and correspondingly provided with a coaxial rotary chuck (4); the rotary chuck (4) is connected with the synchronous rotation driving mechanism; a blowtorch platform (5) and a movable sliding table (7) are arranged on the flame lathe platform (1), the blowtorch platform (5) is movably arranged below the coaxial line of the rotary chuck (4), and the axis of a nozzle of a blowtorch (6) is inclined at an angle of 45 degrees and points to the coaxial line of the rotary chuck (4); the blowtorch platform (5) and the movable sliding table (7) can reciprocate on the track of the flame lathe platform (1);

the correcting device is fixed on the movable sliding table (7) and is arranged below the coaxial line of the rotary chuck (4); the correcting device comprises a lifting platform (8) and a correcting graphite block (9) arranged on the lifting platform (8).

2. Apparatus for rectifying the runout of an optical fiber preform according to claim 1, wherein the spin chucks (4) are installed inside two holders in coaxial opposition.

3. The apparatus for rectifying the runout of the optical fiber preform according to claim 1, wherein the spin chuck (4) is internally provided with a graphite clamping block for clamping the preform (3).

4. Apparatus for correcting the runout of an optical fiber preform according to claim 1, wherein the correcting graphite block (9) has a concave semi-ring structure.

5. The apparatus for correcting the runout of the optical fiber preform according to claim 1, wherein the torch platform (5) is connected to a reciprocating driving means.

6. The apparatus for rectifying the runout of the optical fiber preform according to claim 1, wherein the traveling carriage is capable of sliding on a rail of the flame bed platform (1).

7. A method for correcting the runout of an optical fiber preform according to any one of claims 1 to 6, comprising the steps of:

s1, measuring jumping values of the axial different positions of the prefabricated rod (3) during rotating around a shaft, and determining the bending condition of the integral axial prefabricated rod (3);

s2, clamping the preform rod (3) on a fixed seat frame (2) of a flame lathe platform (1), and selecting a point with the minimum axial runout value of the whole preform rod (3) as a clamping point; the rotary chuck (4) is driven to rotate;

s3, moving the blowtorch platform (5) to the next jumping measuring point of the clamping point of the prefabricated rod (3), and enabling the moving sliding table (7) to be close to the blowtorch platform (5); adjusting a lifting platform (8) on the movable sliding table (7) to enable the correcting graphite block (9) to support the prefabricated rod (3), wherein the supporting point is positioned behind the jumping point of the corrected prefabricated rod (3);

s4, setting a proper gas flow of the blast burner (6), enabling the blast burner (6) to heat the prefabricated rod (3) to reach a melting state, adjusting the lifting platform (8), enabling the correcting graphite block (9) to bear the pressure exerted by the prefabricated rod (3), correcting the jumping of the melting position of the prefabricated rod (3) through the pressure of the current supporting point until the prefabricated rod (3) is separated from the correcting graphite block 9, and finishing the jumping correction of the melting position of the prefabricated rod (3);

s5, repeating the steps S3-S4 until the correction of the whole preform (3) is completed.

8. The method for rectifying runout of an optical fiber preform according to claim 7, wherein the flame temperature of the torch (6) is 1650 ℃ to 1700 ℃.

9. The method for rectifying runout of an optical fiber preform according to claim 7, wherein the flame of the torch (6) employs methane gas or propane gas.

10. The method for correcting the runout of the optical fiber preform according to claim 7, wherein in step S4, when the piece of corrected graphite is separated from the preform (3), the runout at the fusion of the preform (3) is corrected to be finished.

Technical Field

The invention belongs to the technical field of optical fiber perform manufacturing, and particularly relates to a device and a method for correcting the runout of an optical fiber perform.

Background

Optical fiber perform need be through extending in preparation process, and the collimation of extending equipment or the collimation of preform welding before extending all can influence the beat of preform after extending, if the beat of inspection preform exceeds the standard value, need correct the preform, otherwise can cause the core package concentricity error of optical fiber behind the preform wire drawing to exceed the mark and lead to scrapping.

At present, the preform rod is corrected mainly by skilled workers, a flame lathe is used for clamping a core rod, after a bending point is softened by heating with oxyhydrogen flame, the core rod is manually pressed down or lifted up to manually correct the runout. The correcting method has higher requirements on the proficiency and experience of workers, the jumping of the corrected preform cannot reach the standard once, the preform can be qualified only by needing to be corrected for many times, and the efficiency is lower.

Disclosure of Invention

Aiming at the defects in the prior art, the invention provides a device and a method for correcting the runout of an optical fiber preform.

In order to achieve the purpose, the invention adopts the following technical scheme:

a device for correcting the optical fiber perform jumping comprises a flame lathe platform and a correcting device; two ends of the flame lathe platform are respectively provided with a seat frame, wherein one seat frame is a movable seat frame, and the other seat frame is a fixed seat frame 2; the two seat frames are respectively and correspondingly provided with a coaxial rotary chuck; the rotary chuck is connected with the synchronous rotation driving mechanism; the flame lathe platform is provided with a blowtorch platform and a movable sliding table, the blowtorch platform is movably arranged below the coaxial line of the rotary chuck, and the axis of a nozzle of the blowtorch is inclined at an angle of 45 degrees and points to the coaxial line of the rotary chuck; the blowtorch platform and the movable sliding table can reciprocate on the track of the flame lathe platform;

the correcting device is fixed on the movable sliding table and is arranged below the coaxial line of the rotary chuck; the correcting device comprises a lifting platform and a correcting graphite block arranged on the lifting platform.

In order to optimize the technical scheme, the specific measures adopted further comprise:

further, the rotary chucks are arranged on the inner sides of the two seat frames in coaxial and opposite arrangement.

Furthermore, a graphite clamping block is arranged on the inner side of the rotary chuck and used for clamping the prefabricated rod.

Furthermore, the correcting graphite block is of a concave semi-ring structure.

Further, the blowtorch platform is connected with a reciprocating driving device.

Further, the moving mount is slidable on a rail of the flame bed platform.

A method for correcting the runout of the optical fiber preform rod correcting device comprises the following steps:

s1, measuring jumping values of the prefabricated rod when different positions on the axial direction rotate around the shaft, and accordingly determining the bending condition of the prefabricated rod on the whole axial direction;

s2, clamping the preform on a fixed seat frame of a flame lathe platform, and selecting a point with the smallest axial runout value of the whole preform as a clamping point; driving the rotating chuck to rotate;

s3, moving the blowtorch platform to the next jumping measurement point of the preform clamping point, and enabling the moving sliding table to be close to the blowtorch platform; adjusting a lifting platform on the movable sliding table to enable the correcting graphite block to support the preform, wherein the supporting point is positioned behind the jumping point of the corrected preform;

s4, setting a proper gas flow of a blowtorch to enable the blowtorch to heat the preform to reach a melting state, adjusting a lifting platform to enable the correcting graphite block to bear the pressure applied by the preform, correcting the jumping of the melting part of the preform through the pressure of the current supporting point until the preform is separated from the correcting graphite block, and finishing the jumping correction of the melting part of the preform at the moment;

and S5, repeating the steps S3-S4 until the correction of the whole preform is completed.

Further, the flame temperature of the blast burner is 1650-1700 ℃.

Further, the flame of the torch adopts methane gas or propane gas.

Further, in step S4, when the piece of corrected graphite is separated from the preform, the runout of the molten portion of the preform is corrected.

The invention has the beneficial effects that: according to the invention, the rotating preform is corrected by adding the correcting device on the flame lathe platform, so that the axial runout of the preform is improved. Through the design of correcting the graphite piece, when orthotic devices during operation, the prefabricated stick is circular motion at correcting the graphite piece intra-annular, corrects the pressure that the graphite piece can receive the prefabricated stick and exert, utilizes the pressure that this strong point received, corrects the jumping of prefabricated stick melting department, and after prefabricated stick and correction graphite piece separation, the completion has been corrected in jumping of prefabricated stick melting point. The utility model provides a prefabricated excellent orthotic devices can improve the degree of difficulty of current manual correction, improves and corrects efficiency, guarantees the quality of correcting.

Drawings

FIG. 1 is a schematic view showing the structure of an apparatus for correcting runout of an optical fiber preform according to the present invention.

FIG. 2 is a schematic view of an orthotropic optical fiber preform of the present invention.

Fig. 3 is a schematic view of the optical fiber preform of the present invention after the straightening is completed.

Reference numerals: 1-flame lathe platform; 2-a stationary seat frame; 3-performing rod; 4-rotating the chuck; 5-a torch platform; 6-blast lamp; 7-moving the sliding table; 8-lifting the platform; 9-correcting graphite blocks.

Detailed Description

The present invention will now be described in further detail with reference to the accompanying drawings.

It should be noted that the terms "upper", "lower", "left", "right", "front", "back", etc. used in the present invention are for clarity of description only, and are not intended to limit the scope of the present invention, and the relative relationship between the terms and the terms is not limited by the technical contents of the essential changes.

As shown in fig. 1, an apparatus for correcting runout of an optical fiber preform, comprising: a flame lathe platform 1 and a correcting device; the flame lathe platform 1 is provided with a sliding track; the two ends of the flame lathe platform 1 are respectively provided with a seat frame, wherein one end of the flame lathe platform 1 is provided with a fixed seat frame 2, and the fixed seat frame 2 is provided with a through hole along the axial direction of the flame lathe platform and used for enabling the prefabricated rod 3 to pass through. The fixed seat frame 2 and the movable seat frame at the other end of the flame lathe platform 1 are respectively and correspondingly provided with a coaxial rotary chuck 4, and the coaxial rotary chucks 4 of the two seat frames are both connected with the synchronous rotation driving mechanism, so that the rotation of the two rotary chucks 4 is kept synchronous. A graphite clamping block is arranged on the inner side of the rotary chuck 4 and used for clamping the prefabricated rod 3; a torch platform 5 is arranged on the flame lathe platform 1, the torch platform 5 is connected with a reciprocating driving device, and the moving speed of the torch platform 5 can be set; the blowtorch platform 5 is provided with a blowtorch 6, and the blowtorch 6 can adopt methane gas or propane gas to heat the prefabricated rod 3; the torch platform 5 is installed under the spin chuck 4 coaxially, and the nozzle axis of the torch 6 is inclined at 45 ° toward the preform 3.

A movable sliding table 7 is arranged on the flame lathe platform 1, and the movable sliding table 7 and the torch platform 5 can be fixedly connected or can be separated into two devices which can respectively move independently; a lifting platform 8 and a correcting graphite block 9 are arranged on the movable sliding table 7; the correcting graphite block 9 is of an inwards concave semi-ring structure, and the radian of the inwards concave semi-ring structure can be matched with the radian of the optical fiber perform rod 3; the movable sliding table 7 is arranged below the coaxial line of the rotating chuck 4, and the correcting graphite block 9 is lifted to the lower part of the prefabricated rod 3 by utilizing the lifting platform 8 and is used for supporting and correcting the prefabricated rod 3. The blowtorch platform 5 and the movable sliding table 7 are connected with a reciprocating driving device.

The invention discloses a method for correcting the runout of an optical fiber preform based on the correcting device, which comprises the following steps:

s1, firstly, placing the prefabricated rod 3 on a measuring platform, and measuring the jumping values of the prefabricated rod 3 when different positions on the axis rotate around the axis by using a measuring component, so as to determine the bending condition of the prefabricated rod 3 in the axial direction, wherein the largest jumping of the whole prefabricated rod 3 is 1.5 mm;

s2, clamping the preform 3 on a fixed seat frame 2 of a flame lathe platform 1, selecting the minimum value of the whole preform 3 in the axial direction according to the jumping value of a clamping point, and driving and controlling the rotating chuck 4 to rotate;

s3, moving the blowtorch platform 5 to the next jumping measuring point of the clamping point of the prefabricated rod 3, enabling the moving sliding table 7 to be close to the blowtorch platform 5, moving the lifting platform 8 by adjusting a hand wheel on the moving sliding table 7, and adjusting the correcting graphite block 9 to support the prefabricated rod 3, wherein the supporting point is positioned behind the jumping point of the corrected prefabricated rod 3;

s4, setting the methane flow or the propane flow of the blowtorch 6 to be 150-200L/min and the oxygen flow to be 300-500L/min, and rotating the preform rod 3 to enable the jumping measuring point of the blowtorch 6 heating the preform rod 3 to reach a melting state; adjusting the lifting platform 8 to enable the correcting graphite block 9 to bear the pressure applied by the prefabricated rod 3, correcting the jumping of the melting part of the prefabricated rod 3 through the pressure of the supporting point until the prefabricated rod 3 is separated from the correcting graphite block 9, and finishing the jumping correction of the melting part of the prefabricated rod 3 at the moment;

s5, repeating the steps S3 to S4 until the correction of the entire preform 3 is completed.

The flame temperature of the blast burner 6 is controlled to 1650-1700 ℃, because the preform 3 is corrected excessively to cause larger jumping of the preform 3 if the flame temperature of the blast burner 6 is too high, and the hydroxyl content of the preform 3 is increased to cause the water peak of the optical fiber to exceed the standard; if the flame temperature of the torch 6 is too low, the straightening effect is not obtained.

The optical fiber perform 3 that will correct the completion is placed on measuring platform, utilizes measuring component volume to get the runout value when preform 3 epaxial different positions pivoting, measures the biggest runout value in this embodiment and is 0.5mm, satisfies the standard value of setting for (the biggest runout is less than or equal to 0.8mm), has reached the effect of correcting promptly.

The invention discloses a device and a method for correcting the runout of an optical fiber preform, wherein a correcting device is additionally arranged on a flame lathe platform 1 to correct a rotating preform 3, so that the axial runout of the preform 3 is improved. Through the design of correcting graphite piece 9, prefabricated rod 3 is circular motion in correcting graphite piece ring, and when orthotic devices operated, the pressure that utilizes this strong point to receive corrected the beating of 3 melting departments of prefabricated rod, after prefabricated rod 3 and correction graphite piece separation, the beating of 3 melting points of prefabricated rod has been corrected and has been accomplished. The utility model provides a prefabricated excellent orthotic devices can improve the degree of difficulty of current manual correction, improves and corrects efficiency, guarantees the quality of correcting.

The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above-mentioned embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may be made by those skilled in the art without departing from the principle of the invention.