CN115196870B - Method for welding handle of core rod of optical fiber preform - Google Patents
Method for welding handle of core rod of optical fiber preform Download PDFInfo
- Publication number
- CN115196870B CN115196870B CN202210831095.6A CN202210831095A CN115196870B CN 115196870 B CN115196870 B CN 115196870B CN 202210831095 A CN202210831095 A CN 202210831095A CN 115196870 B CN115196870 B CN 115196870B
- Authority
- CN
- China
- Prior art keywords
- core rod
- welding
- handle
- clamping
- optical fiber
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B37/00—Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
- C03B37/01—Manufacture of glass fibres or filaments
- C03B37/012—Manufacture of preforms for drawing fibres or filaments
- C03B37/014—Manufacture of preforms for drawing fibres or filaments made entirely or partially by chemical means, e.g. vapour phase deposition of bulk porous glass either by outside vapour deposition [OVD], or by outside vapour phase oxidation [OVPO] or by vapour axial deposition [VAD]
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/50—Glass production, e.g. reusing waste heat during processing or shaping
- Y02P40/57—Improving the yield, e-g- reduction of reject rates
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Mechanical Coupling Of Light Guides (AREA)
- Manufacture, Treatment Of Glass Fibers (AREA)
Abstract
The invention discloses a method for welding a handle of an optical fiber preform core rod, which comprises the steps of presetting the bending condition of the core rod through a jumping test bench, simulating the positions of welding and clamping the core rod by utilizing rollers on two sides of the jumping test bench, rapidly finding out the positions of the whole core rod, which jumping meets the standard value requirement, by moving the rollers on two sides, marking the positions of the current rollers as a first clamping point and a second clamping point, fixing a right handle of the first clamping point, fixing a left handle of the second clamping point, and performing an axial jumping test after the welding is finished. The invention can weld the handle without correcting the core rod, has practical and simple operation, has low requirements on the skills of operators, improves the welding efficiency, improves the yield of the welded core rod meeting the jumping standard, saves the cost, and simultaneously avoids the problem that the water peak of the optical fiber of the subsequent preform rod drawing exceeds the standard due to the hydroxyl generated by the oxyhydrogen flame of the handheld torch in the core rod correcting process.
Description
Technical Field
The invention relates to the technical field of optical fiber perform manufacturing, in particular to a method for welding a handle of an optical fiber perform core rod.
Background
Currently, the process for producing optical fiber preforms mainly uses a two-step method, i.e., a preform core rod is manufactured first, and then a preform cladding is manufactured. The core rod manufacturing technology mainly comprises the following four steps: modified Chemical Vapor Deposition (MCVD), microwave Plasma Chemical Vapor Deposition (PCVD), outside Vapor Deposition (OVD) and axial vapor deposition (VAD), the overclad manufacturing techniques mainly include outside vapor deposition, sleeving, plasma spraying.
The external vapor deposition process in the outer cladding manufacturing technology is to weld handle bars at two ends of the stretched core rod, fixedly clamp the stretched core rod on a horizontal or vertical lathe, carry out flame hydrolysis reaction on reaction raw material gases silicon tetrachloride, oxygen, hydrogen or methane gas through a blast burner, and enable generated silicon dioxide particles to be adsorbed on the surface of the core rod for layer-by-layer growth. And finally, dehydrating and sintering the prepared mandrel loose body in a high-temperature furnace of chlorine and helium to form a transparent glass preform. The outside vapor deposition process has strict requirements on the jump of the core rod of the welding handle, and once the jump of the core rod exceeds the range, the cladding thickness of the optical fiber preform prepared by the outside vapor deposition is uneven, so that the core cladding concentricity error of the optical fiber after the optical fiber preform is drawn exceeds the standard, and the optical fiber is scrapped. The jump of the core rod is mainly caused by the stretching of the core rod mother rod, so that the jump after the handle is welded on the core rod is ensured to meet the requirement, and the conventional solution means is mainly to ensure that the jump of the core rod after the stretching treatment is smaller by optimizing the stretching process at present; or correcting the core rod with larger jump after stretching, and then welding the handle.
The jump of the core rod refers to the difference between the maximum value and the minimum value measured in a given direction by a dial indicator with a fixed position when the core rod does not rotate around the axis in one circle. Typically, the maximum or minimum values measured by the dial indicators at each axial position after stretching the mandrel are not on one axis, and because the mandrel is cylindrical, they are substantially spirally distributed on the surface of the mandrel, which is very detrimental to welding the handle. For a mandrel with a relatively small value of runout in the whole axial direction (assuming a maximum runout of 0.6 mm), the conventional welding method is to place the mandrel on a rotating chuck on the fixed clamping seat side of a welding lathe, the clamping position is not specified, and the extending length of the mandrel is enough for welding. The rotary chuck is fixed on the blast lamp platform by using the dial indicator, the jumping value of the welding end of the core rod is less than or equal to 0.2mm, the handle to be welded is placed on the rotary chuck of the clamping seat at the other side, the blast lamp platform and the movable clamping seat are moved to proper positions, the blast lamp flame is ignited, the end face of the core rod and the end face of the handle are butted after being melted, and similarly, the handle is welded at the other end of the core rod according to the method. The maximum jump of the whole axial direction of the core rod after the handle is welded is slightly larger than the maximum jump value of the core rod before the handle is welded (the maximum jump value is 0.7 mm), and the jump standard of the core rod after the handle is welded (the maximum jump is 0.8 mm). For the core rod with relatively large axial runout value (the maximum runout exceeds 1.5 mm) of the whole core rod, if the handle is welded normally according to the conventional method, obviously, the runout of the core rod after welding does not meet the standard, the areas with large axial runout of the core rod must be corrected one by using a handheld torch, and after the maximum runout of the core rod is corrected to meet the requirement, the handle is welded according to the conventional method.
The method for correcting the core rod through the handheld torch and then welding the handle is complex in operation compared with a method for directly welding the handle by the core rod, the welding efficiency is affected, the gas consumption cost is increased, meanwhile, the technical requirement of the core rod correction to operators is very high, the core rod is scrapped due to the fact that the correction is poor or even the core rod is directly bent easily, in addition, hydroxyl is easily generated in the process of correcting the core rod by oxyhydrogen flame adopted by the handheld torch, and the water peak of an optical fiber drawn by a subsequent prefabricated rod is easily out of standard.
Disclosure of Invention
The invention aims to provide a method for welding a handle of an optical fiber preform core rod, which aims at overcoming the defects of the prior art, can weld the handle without correcting the core rod, is relatively simple and practical to operate, has low requirements on skills of operators, improves efficiency and yield, saves gas cost required for correcting the core rod, and avoids the problem that the water peak of an optical fiber drawn by a subsequent preform rod exceeds standard due to hydroxyl generated by oxyhydrogen flame of a handheld torch.
The technical scheme for realizing the purpose of the invention is as follows:
a method of welding a handle to an optical fiber preform core rod, comprising the steps of:
step S1: determining the overall axial bending condition of the core rod, placing the core rod on rollers at two ends of a runout detection table, measuring and marking the maximum runout position and the axial runout value on the core rod;
step S2: determining a first clamping point and a second clamping point corresponding to the core rod when the right-end handle and the left-end handle are welded, moving the idler wheels at two ends of the runout detection table and measuring the axial runout value of the core rod, wherein when the runout values measured axially of the whole core rod are smaller than the standard value of axial runout after welding, the positions of the idler wheels are the first clamping point and the second clamping point respectively;
step S3: the method comprises the steps of adopting a welding lathe to weld a handle, placing a core rod on a rotating chuck of a fixed clamping seat at the left end of the welding lathe, wherein the clamping position of the rotating chuck is a first clamping point, so that the first clamping point is fixed, the rotating chuck of a movable clamping seat at the right end of the welding lathe clamps a left end handle, adjusting the position of the movable clamping seat to enable the left end handle to be positioned at a welding point of the core rod, and adopting a blast lamp to weld, so that the welding of the left end handle of the core rod is completed; the method comprises the steps of reversely clamping a core rod on a rotary chuck of a fixed clamping seat, wherein the clamping position of the rotary chuck is a second clamping point, so that the second clamping point is fixed, a right end handle is clamped by the rotary chuck of a movable clamping seat at the right end of a welding lathe, the position of the movable clamping seat is adjusted, the right end handle is positioned at a welding point of the core rod, and welding is performed by adopting a blast lamp, so that the welding of the right end handle of the core rod is completed;
step S4: and (3) performing a jump test on the core rod after the handle is welded, wherein the measured axial jump values all accord with the jump standard value.
Further, a dial indicator is used for measuring the axial runout value.
Further, the rotary chuck of the welding lathe adopts a clamping block made of graphite materials.
Further, the flame temperature of the blast lamp is 1500-1700 ℃.
Further, the burner adopts methane gas or propane gas to burn to generate flame.
Further, the bottom of the blast lamp is fixedly connected with a mobile platform.
By adopting the technical scheme, the invention has the following beneficial effects:
according to the invention, the positions of the rollers at two sides of the jumping test bench are used for simulating the positions of the welding clamping core rods, the positions of the rollers at two sides are moved, the positions of the jumping of the whole core rod meeting the standard value requirement are quickly found out, the positions are used as welding clamping points for welding the handle, and particularly, the handle can be welded without correcting the core rod after the jumping exceeds the standard value, so that the operation is relatively simple and practical, the skill requirement on operators is low, the welding efficiency is improved, the yield of the welded core rod meeting the jumping standard is improved, the defect of correcting the core rod in the traditional welding method is avoided, even the occurrence of direct bending and scrapping of the core rod is avoided, and the gas consumption cost required for correcting the core rod is saved. In addition, the method also solves the problem that the water peak of the optical fiber of the subsequent preform drawing exceeds standard due to the hydroxyl generated by oxyhydrogen flame of the handheld torch in the process of correcting the core rod.
The invention adopts the dial indicator to measure the axial runout value, and has simple measuring method and higher measuring precision.
According to the invention, the welding lathe is used for welding the handle, the relative position of the handle and the core rod is adjusted through the movable clamping seat of the welding lathe, the adjustment is convenient, and the welding efficiency is improved.
The welding lathe adopts the clamping blocks made of graphite, ensures the clamping force and is more resistant to high temperature, is not influenced by high temperature during handle welding, and has long service life.
The flame temperature of the blast lamp is 1500-1700 ℃, so that the end face of the core rod and the end face of the handle can be completely melted, and the welding is ensured to be firm.
The burner provided by the invention adopts methane gas or propane gas to burn to generate flame, replaces oxyhydrogen flame of the traditional burner, and further avoids the problem that the water peak of the optical fiber in the later period exceeds standard due to the generation of hydroxyl at the two ends of the core rod.
The movable platform is arranged at the bottom of the blast lamp, so that the position of the blast lamp can be conveniently adjusted when the handle is welded, and the use is convenient.
Drawings
In order that the invention may be more readily understood, a more particular description of the invention will be rendered by reference to specific embodiments that are illustrated in the appended drawings, in which:
FIG. 1 is a schematic flow chart of a welding handle of an optical fiber preform core rod of the present invention;
FIG. 2 is a schematic diagram of the recorded position and jitter values of the axial jitter test of the core rod before the core rod is welded to the handle;
FIG. 3 is a schematic illustration of the measurement of the optimal clamping points for the core rod with axial runout less than the runout standard according to the present invention;
FIG. 4 is a schematic view of the welding lathe of the present invention;
FIG. 5 is a schematic illustration of the measurement of the overall axial runout of the mandrel welded handle according to the present invention, all meeting the runout criteria;
FIG. 6 is a schematic diagram showing the distribution of runout before and after welding of the mandrel bar of example 1;
fig. 7 is a schematic diagram showing the distribution of runout before and after the welding of the mandrel bar in example 2.
The reference numerals in the drawings are:
dial indicator 1, test bench 2, gyro wheel 3, lathe main part 4, fixed cassette 5, remove cassette 6, spin chuck 7, moving platform 8, blast lamp 9, plug 10, handle 11.
Description of the embodiments
In order to better understand the above technical solutions, the following detailed description will refer to the accompanying drawings and specific embodiments.
Example 1
The method for welding the handle of the core rod of the optical fiber preform as shown in fig. 1 comprises the following steps:
step S1: the bending condition of the whole axial direction of the core rod is determined, as shown in fig. 2, the adopted testing tool comprises a dial indicator 1 and a jump detection table consisting of a test table 2 and rollers 3 positioned at two ends of the test table 2, the dial indicator is adopted for measuring the axial jump value, and the measuring method is simple and has higher measuring precision.
Specifically, the core rod is placed on the idler wheels 3 at two ends of the runout detection platform, the runout values of the core rod in different axial positions are measured by using the dial indicator 1 and the maximum runout positions and the runout values are marked on the core rod, so that the overall axial bending condition of the core rod is determined, the core rod is generally spirally distributed on the surface of the core rod, the maximum axial runout values of the core rod are located at the middle position of the core rod as a detection result of the embodiment, and the runout values are 1.6mm.
Step S2: when the first clamping point and the second clamping point corresponding to the core rod during welding of the right end handle and the left end handle are determined, as shown in fig. 3, the rollers 3 at the two ends are simultaneously moved towards the center of the core rod along the axial direction of the core rod, the dial indicator 1 is used for measuring the jumping values of the core rod during rotation around the shaft at different axial positions, when the jumping values measured by the axial direction of the whole core rod are smaller than the standard value of axial jumping after welding, the positions of the rollers 3 at the two sides are the first clamping point and the second clamping point respectively, and at the moment, the maximum jumping value of the whole core rod is 0.5mm.
Step S3: the handle welding is carried out by adopting a welding lathe, the welding lathe can adopt an Arnold welding lathe P3160 or a subsequent welding lathe, as shown in fig. 4, the welding lathe comprises a lathe main body 4, and a fixed clamping seat 5 and a movable clamping seat 6 which are respectively arranged at two ends of the lathe main body 4, wherein the opposite surfaces of the fixed clamping seat 5 and the movable clamping seat 6 are respectively provided with a rotary chuck 7 which is respectively used for clamping a core rod 10 and a handle 11, and the relative positions of the handle 11 and the core rod 10 are adjusted by the movable clamping seat 6, so that the welding efficiency is improved, and the welding machine is convenient to adjust. The spin chuck 7 adopts the clamp splice of graphite material, and is more high temperature resistant when guaranteeing the clamp force, does not receive the high temperature influence when handle 11 welds, long service life. The movable platform 8 is movably arranged on the lathe main body 4, the blast lamp 9 positioned below the core rod is fixedly arranged on the movable platform 8, and the position of the blast lamp 9 is adjusted when the handle is welded more conveniently through the arrangement of the movable platform 8, so that the use is convenient. In addition, the burner 9 adopts methane gas or propane gas to burn to generate flame, replaces oxyhydrogen flame of the traditional burner, and avoids the problem of exceeding the standard of the later optical fiber water peak caused by hydroxyl generated at the two ends of the core rod.
The welding specifically comprises the following steps:
step S31: the core rod is placed on a rotary chuck 7 of a left end fixed clamping seat 5, and the clamping position of the rotary chuck 7 is a first clamping point.
Step S32: the rotary chuck 7 of the right-end movable clamping seat 6 clamps the left-end handle, the position of the movable clamping seat 6 is adjusted, the left-end handle is located at the welding point of the core rod, the torch 9 is used for welding, the flame temperature is 1600 ℃, the end face of the core rod and the end face of the handle can be completely melted, and the welding is firm.
Step S33: the core rod welded with the right-end handle is clamped on the rotary chuck 7 of the fixed clamping seat 5 in the opposite direction, and the clamping position of the rotary chuck 7 is a second clamping point.
Step S34: the rotary chuck of the right-end movable clamping seat clamps the left-end handle, the position of the movable clamping seat is adjusted, the left-end handle is located at the welding point of the core rod, the torch 9 is used for welding, the flame temperature is 1600 ℃, the end face of the core rod and the end face of the handle can be completely melted, and the welding is firm.
Step S4: the core rod after the handle is welded is subjected to a jump test, as shown in fig. 5, the core rod 4 with the handles connected to the two sides is placed on the rollers 3, the two rollers 3 are respectively positioned below the left end handle and the right end handle, the jump values of the core rod in different axial positions during rotation around the shaft are measured by using the dial indicator 1, at the moment, the measured jump values are close to the jump values measured in the step S2, the maximum axial jump value is 0.53mm, and the axial jump of the whole core rod accords with the jump standard value.
The axial runout detection is performed on the core rod before the handle is welded and the core rod after the handle is welded by the conventional method and the welding method of the embodiment, and the runout distribution result is shown in fig. 6.
Example 2
The method for welding the handle of the core rod of the optical fiber preform in this embodiment is the same as that in embodiment 1, except that the maximum axial runout value measured when the handle is not welded by the core rod is located at the two sides of the core rod, the maximum runout value is 1.8mm, and the maximum axial runout value after the handle is welded is 0.65mm. And then the core rod before the handle is welded and the core rod after the handle is welded by the conventional method and the welding method of the embodiment are subjected to axial runout detection, and the runout distribution result is shown in fig. 7.
According to the structures shown in fig. 6 and 7, after the handle is welded by the method of the invention, the maximum axial runout value of the core rod is obviously reduced, and the maximum axial runout value of the core rod of the handle is obviously increased by adopting a conventional method. According to the invention, the positions of the rollers 3 on two sides of the jumping test bench are used for simulating the positions of the welding clamping core rods, the positions of the rollers 3 on two sides are moved to quickly find out the positions of the jumping of the whole core rod, which meet the standard value requirement, the positions are used as welding clamping points for welding the handle, particularly, the handle can be welded on the core rod with the jumping exceeding standard after the stretching of the core rod without correcting the core rod, the operation is relatively simple and practical, the skill requirement on operators is not high, the welding efficiency is improved, the yield of the welded core rod meeting the jumping standard is improved, the occurrence of direct bending rejection of the core rod due to the correction failure in the traditional welding method is avoided, and the gas consumption cost required for correcting the core rod is saved. In addition, the method also solves the problem that the water peak of the optical fiber of the subsequent preform drawing exceeds standard due to the hydroxyl generated by oxyhydrogen flame of the handheld torch in the process of correcting the core rod.
While the foregoing is directed to embodiments of the present invention, other and further details of the invention may be had by the present invention, it should be understood that the foregoing description is merely illustrative of the present invention and that no limitations are intended to the scope of the invention, except insofar as modifications, equivalents, improvements or modifications are within the spirit and principles of the invention.
Claims (6)
1. A method for welding a handle to an optical fiber preform core rod, comprising the steps of:
step S1: determining the overall axial bending condition of the stretched core rod, placing the core rod on rollers at two ends of a jump detection table, measuring and marking the maximum jump position and the axial jump value on the core rod, and performing the next step when the maximum jump value is smaller than 2 mm;
step S2: determining a first clamping point and a second clamping point corresponding to the core rod when the right end handle and the left end handle are welded, moving the rollers at two ends towards the center of the core rod along the axial direction of the core rod at the same time, measuring the axial runout value of the core rod, and when the runout values measured by the whole core rod in the axial direction are smaller than the standard value of the axial runout after welding, respectively locating the rollers at the first clamping point and the second clamping point;
step S3: the method comprises the steps of adopting a welding lathe to weld a handle, placing a core rod on a rotating chuck of a fixed clamping seat at the left end of the welding lathe, wherein the clamping position of the rotating chuck is a first clamping point, so that the first clamping point is fixed, the rotating chuck of a movable clamping seat at the right end of the welding lathe clamps a left end handle, adjusting the position of the movable clamping seat to enable the left end handle to be positioned at a welding point of the core rod, and adopting a blast lamp to weld, so that the welding of the left end handle of the core rod is completed; the method comprises the steps of reversely clamping a core rod on a rotary chuck of a fixed clamping seat, wherein the clamping position of the rotary chuck is a second clamping point, so that the second clamping point is fixed, a right end handle is clamped by the rotary chuck of a movable clamping seat at the right end of a welding lathe, the position of the movable clamping seat is adjusted, the right end handle is positioned at a welding point of the core rod, and welding is performed by adopting a blast lamp, so that the welding of the right end handle of the core rod is completed;
step S4: and (3) performing a jump test on the core rod after the handle is welded, wherein the measured axial jump values all accord with the jump standard value.
2. The method of fabricating an optical fiber preform core rod welding handle according to claim 1, wherein: and measuring the axial runout value by adopting a dial indicator.
3. The method of fabricating an optical fiber preform core rod welding handle according to claim 1, wherein: the rotary chuck of the welding lathe adopts a clamping block made of graphite materials.
4. The method of fabricating an optical fiber preform core rod welding handle according to claim 1, wherein: the flame temperature of the blast lamp is 1500-1700 ℃.
5. The method of fabricating an optical fiber preform core rod welding handle according to claim 1, wherein: the burner lamp generates flame by burning methane gas or propane gas.
6. The method of fabricating an optical fiber preform core rod welding handle according to claim 1, wherein: the bottom of the blast lamp is fixedly connected with a mobile platform.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210831095.6A CN115196870B (en) | 2022-07-14 | 2022-07-14 | Method for welding handle of core rod of optical fiber preform |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210831095.6A CN115196870B (en) | 2022-07-14 | 2022-07-14 | Method for welding handle of core rod of optical fiber preform |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115196870A CN115196870A (en) | 2022-10-18 |
| CN115196870B true CN115196870B (en) | 2023-08-15 |
Family
ID=83582825
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210831095.6A Active CN115196870B (en) | 2022-07-14 | 2022-07-14 | Method for welding handle of core rod of optical fiber preform |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115196870B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06144861A (en) * | 1992-11-05 | 1994-05-24 | Fujikura Ltd | Method for processing preform for optical fiber |
| CN205528425U (en) * | 2016-04-11 | 2016-08-31 | 长飞光纤光缆股份有限公司 | Optical fiber perform processing apparatus |
| CN111268901A (en) * | 2020-04-13 | 2020-06-12 | 远东通讯有限公司 | Preparation method of VAD (vapor deposition) core rod |
| CN112408774A (en) * | 2020-11-25 | 2021-02-26 | 通鼎互联信息股份有限公司 | Device and method for correcting optical fiber preform jumping |
| CN213803523U (en) * | 2020-12-04 | 2021-07-27 | 华能(泰安)光电科技有限公司 | Automatic straightening equipment for core rod of optical fiber preform |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DK3247680T3 (en) * | 2015-01-22 | 2020-03-16 | Heraeus Quartz North America Llc | CREATION OF LONG-TENDED GLASS COMPONENTS WITH LOW BENDING WHEN USING A Gripping Device |
-
2022
- 2022-07-14 CN CN202210831095.6A patent/CN115196870B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06144861A (en) * | 1992-11-05 | 1994-05-24 | Fujikura Ltd | Method for processing preform for optical fiber |
| CN205528425U (en) * | 2016-04-11 | 2016-08-31 | 长飞光纤光缆股份有限公司 | Optical fiber perform processing apparatus |
| CN111268901A (en) * | 2020-04-13 | 2020-06-12 | 远东通讯有限公司 | Preparation method of VAD (vapor deposition) core rod |
| CN112408774A (en) * | 2020-11-25 | 2021-02-26 | 通鼎互联信息股份有限公司 | Device and method for correcting optical fiber preform jumping |
| CN213803523U (en) * | 2020-12-04 | 2021-07-27 | 华能(泰安)光电科技有限公司 | Automatic straightening equipment for core rod of optical fiber preform |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115196870A (en) | 2022-10-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20080107385A1 (en) | Optical Fiber And Manufacturing Method Thereof | |
| JP2637857B2 (en) | Method for producing optical fiber preform having regular characteristics | |
| JP6180377B2 (en) | Drawing method of glass base material | |
| US20070169515A1 (en) | Processing method and processing apparatus of glass base material for optical fiber | |
| CN115196870B (en) | Method for welding handle of core rod of optical fiber preform | |
| US11649185B2 (en) | Automated large outside diameter preform tipping process and resulting glass preforms | |
| EP1487750B1 (en) | Method for producing an optical fiber and optical fiber | |
| US6978641B2 (en) | Method for cutting glass rod and cutting device for use therein | |
| CN112408774A (en) | Device and method for correcting optical fiber preform jumping | |
| EP3686165A1 (en) | High-strength welding process for making heavy glass preforms with large cross sectional areas | |
| JPH02275723A (en) | Production of quartz rod | |
| JP3938523B2 (en) | Workpiece machining method and machine | |
| JP6979000B2 (en) | Manufacturing method of glass base material for optical fiber | |
| US8464557B2 (en) | Method of producing optical fiber preform and optical fiber | |
| CN217230563U (en) | Fusion splicing device for optical fiber perform and sleeve | |
| US8613208B2 (en) | Method for forming an improved weld between a primary preform and a silica bar | |
| JP5343715B2 (en) | Multi-tube burner manufacturing method and multi-tube burner inspection method | |
| CN115448589B (en) | Device and method for precisely extending core rod of optical fiber preform | |
| JP2003020239A (en) | Method for processing optical fiber preform | |
| JP7070561B2 (en) | Manufacturing method of optical fiber base material and optical fiber base material | |
| JP2004091304A (en) | Aligning method for optical fiber preform | |
| JP2001048565A (en) | Method for drawing optical fiber preform | |
| JPH0930827A (en) | Production of optical fiber preform | |
| JPH0912329A (en) | Apparatus for measuring and displaying eccentricity of glass rod | |
| JP4413715B2 (en) | Optical fiber, preform for optical fiber, quartz glass tube used for manufacturing the same, and manufacturing method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |