CN105906197A - Device and method for monitoring drawing residual length of optical fiber perform - Google Patents
Device and method for monitoring drawing residual length of optical fiber perform Download PDFInfo
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- CN105906197A CN105906197A CN201610429574.XA CN201610429574A CN105906197A CN 105906197 A CN105906197 A CN 105906197A CN 201610429574 A CN201610429574 A CN 201610429574A CN 105906197 A CN105906197 A CN 105906197A
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- 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
- C03B37/02—Manufacture of glass fibres or filaments by drawing or extruding, e.g. direct drawing of molten glass from nozzles; Cooling fins therefor
- C03B37/025—Manufacture of glass fibres or filaments by drawing or extruding, e.g. direct drawing of molten glass from nozzles; Cooling fins therefor from reheated softened tubes, rods, fibres or filaments, e.g. drawing fibres from preforms
- C03B37/0253—Controlling or regulating
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/05—Programmable logic controllers, e.g. simulating logic interconnections of signals according to ladder diagrams or function charts
- G05B19/054—Input/output
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- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Geochemistry & Mineralogy (AREA)
- Manufacturing & Machinery (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Manufacture, Treatment Of Glass Fibers (AREA)
- Arrangements For Transmission Of Measured Signals (AREA)
Abstract
The invention discloses a device for monitoring the drawing residual length of an optical fiber perform. The device comprises a perform hanging platform which is fixed to a horizontal weighing platform, a horizontal supporting platform is arranged at the bottom end of the horizontal weighing platform, four weighing sensors are arranged between the horizontal supporting platform and the horizontal weighing platform, and weighing sensors are arranged at the four corners of the bottom face of the horizontal weighing platform. Two sets of heat insulation plates are further arranged between the horizontal weighing platform and the horizontal supporting platform and arranged at the two sides of a U-shaped gap respectively and are used for preventing heat generated during drawing of the optical fiber perform from being transferred to the weighing sensors. The weighing sensors collect quality data of the optical fiber perform at the moment that an optical fiber is fed to a wire winding machine, the data is collected by a wire collecting box, the wire collecting box transmits the collected data to a PLC, the PLC analyzes the data collected by the wire collecting box, a drawing operation panel reads and writes the data in the PLC, and the drawing residual length is displayed. Unnecessary waste is reduced, and the production cost is reduced.
Description
Technical field
The present invention relates to field fiber, be specifically related to a kind of dress of long monitoring more than the preform drawing
Put and method.
Background technology
At present in the normal drawing process of preform, the length of string of preform is total by optical wand
Quality estimation draws, wherein lost length comprises: disconnected fine lost length, that pyrometric cone lost length is is indefinite
Value, adds unknown losses, causes the length of string estimated to have relatively large deviation.Often there is wire drawing
The very few phenomenon causing preform waste or the waste of wire drawing too much tail pipe, adds production cost.
Summary of the invention
It is an object of the invention to the problem above overcoming prior art to exist, it is provided that a kind of for predispersed fiber
The device and method of long monitoring more than stick-making and drawbench, assembly of the invention can be to length more than preform drawing
Monitoring, monitors the length of string of preform in drawing process accurately in real time, it is simple to accurately optical fiber
Prefabricated stick drawn wire is quantitative, reduces unnecessary waste, reduces production cost.
For realizing above-mentioned technical purpose, reaching above-mentioned technique effect, the present invention is real by the following technical programs
Existing:
A kind of device of long monitoring more than the preform drawing, comprising:
Hanging rod platform, described hanging rod platform is used for hanging preform, and described hanging rod platform is fixed on water
On flat weighing platform, the bottom of described horizontal weighing platform is provided with horizontal support platform, described horizontal support
Four LOAD CELLSs, the top of described LOAD CELLS it is provided with between platform and described horizontal weighing platform
Being fixed on the bottom surface of described horizontal weighing platform, the bottom of described LOAD CELLS is fixed on described level and is propped up
The end face of support platform；
Described hanging rod platform, horizontal weighing platform, the centrage alignment of horizontal support platform three, described
U-shaped breach is all offered on hanging rod platform, horizontal weighing platform, horizontal support platform, described U-shaped scarce
Mouth is opened in described hanging rod platform, horizontal weighing platform, the centerline of horizontal support platform three, institute
State U-shaped breach for the preform lifting hung；
At the corner being arranged at described horizontal weighing platform bottom surface that described LOAD CELLS is symmetrical；
At least two group thermal insulation boards it are additionally provided with between described horizontal weighing platform and described horizontal support platform, two
Group thermal insulation board is separately positioned on the both sides of described U-shaped breach, heat when being used for intercepting preform drawing
Transmission is on described LOAD CELLS, and often group thermal insulation board at least includes two thermal insulation boards, wherein one heat insulation
Plate is welded on the bottom surface of described horizontal weighing platform, and another thermal insulation board being adjacent is welded on described
On the end face of horizontal support platform, the thermal insulation board being welded on described horizontal weighing platform bottom surface and described water
The end face of flat support platform does not contacts, and is welded on the thermal insulation board on described horizontal support platform end face with described
Horizontal weighing platform bottom surface does not contacts；
Preform hangs to described hanging rod platform, and described LOAD CELLS gathers preform
Qualitative data, the data that described LOAD CELLS collects are gathered by connection box, and described connection box will gather
Data be transferred to PLC, the data that described connection box is gathered by described PLC are analyzed, wire-drawing operation face
Data in described PLC are written and read by plate, and show more than the wire drawing of preform long.
Further, the range of described LOAD CELLS is 0-500kg, and the precision of described LOAD CELLS is little
In full scale 0.05%.
Further, described horizontal support platform interior is connected with cooling circulating water, described horizontal support platform
For steel plate.
Further, described wire-drawing operation panel can read the admission machine take-up coordinating wire-drawing process
The data of length.
Further, long monitoring method more than a kind of preform drawing, comprise the following steps:
Step one: before hanging preform, first makes zero wire drawing control panel；
Step 2: preset the qualitative data remaining conehead after preform pulls in program, if
Determine fibre cladding diameter data, set quality correction constant, set preform density；Pass through
Wire drawing control panel manually sets preform tail pipe qualitative data；
Step 3: on optical fiber, admission machine is at the moment, LOAD CELLS collects the mass number of preform
According to；
Step 4: admission machine on optical fiber, admission machine length makes zero, and starts Real-time Collection admission machine take-up long
Degree；
Step 5: Automatic Program calculates, draw real-time remaining preform can the length of wire drawing, i.e.
Long L more than preform drawingi；
Li=4 × (M0-M1-M2+Mj)/(ρ×π×D2)-L0
Wherein, M0Admission machine quality of weighing at the moment on-wire drawing optical fiber；
M1-set the quality remaining conehead after preform pulls；
M2The quality of-tail pipe；
Mj-quality correction constant；
ρ-density of optic fibre；
D-fibre cladding diameter；
L0-admission machine take-up length；
M0The data gathered at the moment for admission machine on wire drawing optical fiber, L0For real-time data collection, and show
In wire drawing control panel, M1、ρ、Mj, D be definite value, need manually to preset in a program, M2For
Need the value being manually entered, M every timejBy by after actual for preform pulling remain conehead quality with
Its setting value M1Deviation averagely get, and for different wire-drawer-towers and dissimilar preform, Mj
Value difference.
The invention has the beneficial effects as follows:
The invention discloses a kind of device of long monitoring more than the preform drawing, primary structure is for hanging
Rod platform, hanging rod platform is fixed on horizontal weighing platform, and the bottom of horizontal weighing platform is provided with level and props up
Support platform, is provided with four LOAD CELLSs, weighing and sensing between horizontal support platform and horizontal weighing platform
The bottom surface of described horizontal weighing platform is fixed on the top of device, and the bottom of LOAD CELLS is fixed on level and is propped up
The end face of support platform, and, at the corner being arranged at horizontal support platform base that LOAD CELLS is symmetrical,
The qualitative data of preform can be gathered accurately, between horizontal weighing platform and horizontal support platform
Being additionally provided with some thermal insulation boards, wherein a thermal insulation board is welded on the bottom surface of horizontal weighing platform, with its phase
Another adjacent thermal insulation board is welded on the end face of horizontal support platform, is effectively protected by thermal insulation board
Device；Preform hangs to hanging rod platform, and LOAD CELLS gathers preform on optical fiber
Admission machine qualitative data at the moment, the data that LOAD CELLS collects are gathered by connection box, connection box
The data of collection are transferred to PLC, PLC the data of connection box collection are analyzed, wire-drawing operation panel
Data in described PLC are written and read, and show more than the wire drawing of preform long.
Long display in real time more than wire drawing conveniently can be checked on wire-drawing operation panel；By during firm raising speed to light
The measurement of fine prefabricated rods quality, it is to avoid the impact that pyrometric cone and disconnected fibre produce, and gained qualitative data under low speed
Stable, long more accurate more than the wire drawing calculated, be conducive to more accurately wire drawing；Fill up in industry
Not used for the blank of growth device more than in real time monitoring preform drawing.
Described above is only the general introduction of technical solution of the present invention, in order to better understand the skill of the present invention
Art means, and can being practiced according to the content of description, below with presently preferred embodiments of the present invention and join
After closing accompanying drawing detailed description such as.The detailed description of the invention of the present invention is given in detail by following example and accompanying drawing thereof
Go out.
Accompanying drawing explanation
In order to be illustrated more clearly that the technical scheme in embodiment of the present invention technology, below will be to embodiment skill
In art description, the required accompanying drawing used is briefly described, it should be apparent that, the accompanying drawing in describing below
It is only some embodiments of the present invention, for those of ordinary skill in the art, is not paying creation
Property work on the premise of, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the structural representation of the present invention；
Fig. 2 is that signal of the present invention transmits schematic diagram；
Wherein, 1-hanging rod platform, the horizontal weighing platform of 2-, 3-horizontal support platform, 4-LOAD CELLS,
5-thermal insulation board, 6-connection box, 7-PLC, 8-wire-drawing operation panel, 10-U type breach.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out
Clearly and completely describe, it is clear that described embodiment is only a part of embodiment of the present invention, and
It is not all, of embodiment.Based on the embodiment in the present invention, those of ordinary skill in the art are not making
Go out the every other embodiment obtained under creative work premise, broadly fall into the scope of protection of the invention.
Embodiment 1
With reference to shown in Fig. 1, the present embodiment discloses a kind of long monitoring more than the preform drawing
Device, it specifically includes that hanging rod platform 1, horizontal weighing platform 2, horizontal support platform 3, above-mentioned extension
Rod platform 1, horizontal weighing platform 2, horizontal support platform 3 is all slab construction.
Above-mentioned hanging rod platform 1, horizontal weighing platform 2, the centrage alignment of horizontal support platform 3 three,
U-shaped breach 10 is all offered on above-mentioned hanging rod platform 1, horizontal weighing platform 2, horizontal support platform 3,
Above-mentioned U-shaped breach 10 is opened in above-mentioned hanging rod platform 1, horizontal weighing platform 2, horizontal support platform 3
The centerline of three, above-mentioned U-shaped breach 10 is for the space providing the preform of suspension to lift.
Above-mentioned hanging rod platform 1 is used for hanging preform, and above-mentioned hanging rod platform 1 is fixed on level weighs
On platform 2, the bottom of above-mentioned horizontal weighing platform 2 is provided with above-mentioned horizontal support platform 3, and above-mentioned level is propped up
It is provided with four LOAD CELLSs 4, above-mentioned LOAD CELLS between support platform 3 and above-mentioned horizontal weighing platform 2
The bottom surface of above-mentioned horizontal weighing platform 2 is fixed on the top of 4, and the bottom of above-mentioned LOAD CELLS 4 is fixed on
The end face of above-mentioned horizontal support platform 3, and, by above-mentioned for being arranged at of above-mentioned LOAD CELLS 4 symmetry
At the corner of horizontal weighing platform 2 bottom surface, it is possible to obtain preform admission machine on optical fiber accurately
Qualitative data at the moment.
In preform drawing operation, the preform temperature in wire drawing is the highest, can damage and weigh
Sensor 4, in order to protect LOAD CELLS 4, takes the heat insulation and mode of cooling in the present embodiment,
It is additionally provided with at least provided with two groups of thermal insulation boards between above-mentioned horizontal weighing platform 2 and above-mentioned horizontal support platform 3
5, two groups of thermal insulation boards 5 are separately positioned on the both sides of above-mentioned U-shaped breach 10, will be through above-mentioned U-shaped scarce
The heat that the preform of mouth 10 distributes intercepts with above-mentioned thermal insulation board 5, intercepts preform and draws
During silk on heat transmission extremely above-mentioned LOAD CELLS 4, often group thermal insulation board at least includes two thermal insulation boards, its
In a thermal insulation board be welded on the bottom surface of above-mentioned horizontal weighing platform 2, another being adjacent is heat insulation
Plate is welded on the end face of above-mentioned horizontal support platform 3.It is welded on described horizontal weighing platform 2 bottom surface
Thermal insulation board 5 do not contact with the end face of described horizontal support platform 3, be welded on described horizontal support platform 3
Thermal insulation board on end face does not contacts with described horizontal weighing platform 2 bottom surface.I.e. each thermal insulation board 5 only with
One of them contact with platform.
Further, above-mentioned horizontal support platform 3 is internal is connected with cooling circulating water, above-mentioned horizontal support platform 3
For steel plate, by recirculated cooling water, horizontal support platform 3 is helped to cool.
In wire-drawing process, preform hangs to above-mentioned hanging rod platform 1, the signal transmission of device
As shown in Figure 2, above-mentioned LOAD CELLS 4 collects the weight data of preform, above-mentioned weighs
The data that sensor 4 collects are gathered by connection box 6, and the data of collection are transferred to by above-mentioned connection box 6
PLC 7, the data that above-mentioned connection box 6 is gathered by above-mentioned PLC 7 are analyzed, and wire-drawing operation panel 8 is right
Data in above-mentioned PLC 7 are written and read, and show more than the wire drawing of preform long.
In the present embodiment, the range of the above-mentioned LOAD CELLS 4 of selection is 0-500kg, above-mentioned biography of weighing
The precision of sensor 4 is less than the 0.05% of full scale.Further, above-mentioned wire-drawing operation panel 8 can also read and join
Close the data of the admission machine take-up length of wire-drawing process.
The operation principle of the present embodiment is as follows:
Growing, more than preform drawing, the device monitored, mainly include hanging rod platform, hanging rod platform is solid
On horizontal weighing platform, the bottom of horizontal weighing platform is provided with horizontal support platform, and horizontal support is put down
Being provided with four LOAD CELLSs between platform and horizontal weighing platform, the top of LOAD CELLS is fixed on above-mentioned
The bottom surface of horizontal weighing platform, the bottom of LOAD CELLS is fixed on the end face of horizontal support platform, and,
At the corner being arranged at horizontal support platform base that LOAD CELLS is symmetrical, it is possible to obtain optical fiber accurately
The qualitative data of prefabricated rods, is additionally provided with some thermal insulation boards between horizontal weighing platform and horizontal support platform,
Wherein a thermal insulation board is welded on the bottom surface of horizontal weighing platform, another thermal insulation board weldering being adjacent
It is connected on the end face of horizontal support platform, is effectively protected device by thermal insulation board；Preform hangs
Hanging to hanging rod platform, LOAD CELLS gathers preform admission machine quality at the moment on optical fiber
Data, the data that LOAD CELLS collects are gathered by connection box, and the data of collection are transferred to by connection box
The data of connection box collection are analyzed by PLC, PLC, and wire-drawing operation panel is to the data in above-mentioned PLC
It is written and read, and shows more than the wire drawing of preform long.
Long display in real time more than wire drawing conveniently can be checked on wire-drawing operation panel；By during firm raising speed to light
The measurement of fine prefabricated rods quality, it is to avoid the impact that pyrometric cone and disconnected fibre produce, and gained qualitative data under low speed
Stable, long more accurate more than the wire drawing calculated, be conducive to more accurately wire drawing；Fill up in industry
Not used for the blank of growth device more than in real time monitoring preform drawing.
Embodiment 2
Disclosing long monitoring method more than a kind of preform drawing in embodiment 2, the method is based on enforcement
The device of long monitoring more than the preform drawing of example 1, comprises the following steps:
Step one: before hanging preform, first makes zero wire drawing control panel；
Step 2: preset the qualitative data remaining conehead after preform pulls in program, if
Determine fibre cladding diameter data, set quality correction constant, set preform density；Pass through
Wire drawing control panel manually sets preform tail pipe qualitative data；
Step 3: on optical fiber, admission machine is at the moment, LOAD CELLS collects the mass number of preform
According to；
Step 4: admission machine on optical fiber, admission machine length makes zero, and starts Real-time Collection admission machine take-up long
Degree；
Step 5: Automatic Program calculates, draw real-time remaining preform can the length of wire drawing, i.e.
Long L more than preform drawingi。
Wherein, long more than preform drawing computing formula is: Li=4 × (M0-M1-M2+Mj)/(ρ×
π×D2)-L0
M0Admission machine quality of weighing at the moment on-wire drawing optical fiber；
M1-set the quality remaining conehead after preform pulls；
M2The quality of-tail pipe；
Mj-quality correction constant；
ρ-density of optic fibre；
D-fibre cladding diameter；
L0-admission machine take-up length；
M0The data gathered at the moment for admission machine on wire drawing optical fiber, L0For real-time data collection, and show
In wire drawing control panel, M1、ρ、Mj, D be definite value, need manually to preset in a program, M2
For needing the value being manually entered, M every timejBy conehead quality will be remained after actual for preform pulling
With its setting value M1Deviation averagely get, and for different wire-drawer-towers and dissimilar preform,
MjValue difference.
Computing formula long more than above-mentioned preform drawing is public by constant mass, density formula and volume
Formula, can draw the total length of optical fiber when drawing the above-mentioned speed of optical fiber, then deducts the length of take-up in real time,
And then when normal wire drawing, calculating real-time residue preform can length of string.
Relational expression is: M=M0-M1-M2+Mj, M=ρ × v, v=π × L × D2/ 4, Li=L-L0,
Arrive: Li=4 × (M0-M1-M2+Mj)/(ρ×π×D2)-L0。
Described above to the disclosed embodiments, makes professional and technical personnel in the field be capable of or uses
The present invention.Multiple amendment to these embodiments will be aobvious and easy for those skilled in the art
See, generic principles defined herein can without departing from the spirit or scope of the present invention,
Realize in other embodiments.Therefore, the present invention is not intended to be limited to the embodiments shown herein,
And it is to fit to the widest scope consistent with principles disclosed herein and features of novelty.
Claims (5)
1. it is used for the long device monitored more than preform drawing, comprising:
Hanging rod platform, described hanging rod platform is used for hanging preform, and described hanging rod platform is fixed on water
On flat weighing platform, the bottom of described horizontal weighing platform is provided with horizontal support platform, described horizontal support
Four LOAD CELLSs, the top of described LOAD CELLS it is provided with between platform and described horizontal weighing platform
Being fixed on the bottom surface of described horizontal weighing platform, the bottom of described LOAD CELLS is fixed on described level and is propped up
The end face of support platform, it is characterised in that
Described hanging rod platform, horizontal weighing platform, the centrage alignment of horizontal support platform three, described
U-shaped breach is all offered on hanging rod platform, horizontal weighing platform, horizontal support platform, described U-shaped scarce
Mouth is opened in described hanging rod platform, horizontal weighing platform, the centerline of horizontal support platform three, institute
State U-shaped breach for the preform lifting hung；
At the corner being arranged at described horizontal weighing platform bottom surface that described LOAD CELLS is symmetrical；
At least two group thermal insulation boards it are additionally provided with between described horizontal weighing platform and described horizontal support platform, two
Group thermal insulation board is separately positioned on the both sides of described U-shaped breach, heat when being used for intercepting preform drawing
Transmission is on described LOAD CELLS, and often group thermal insulation board at least includes two thermal insulation boards, wherein one heat insulation
Plate is welded on the bottom surface of described horizontal weighing platform, and another thermal insulation board being adjacent is welded on described
On the end face of horizontal support platform, the thermal insulation board being welded on described horizontal weighing platform bottom surface and described water
The end face of flat support platform does not contacts, and is welded on the thermal insulation board on described horizontal support platform end face with described
Horizontal weighing platform bottom surface does not contacts；
Preform hangs to described hanging rod platform, and described LOAD CELLS gathers preform
Qualitative data, the data that described LOAD CELLS collects are gathered by connection box, and described connection box is by collection
Data are transferred to PLC, and the data that described connection box is gathered by described PLC are analyzed, wire-drawing operation panel
Data in described PLC are written and read, and show more than the wire drawing of preform long.
The device of long monitoring, its feature more than the preform drawing the most according to claim 1
Being, the range of described LOAD CELLS is 0-500kg, and the precision of described LOAD CELLS is less than full scale
0.05%.
The device of long monitoring, its feature more than the preform drawing the most according to claim 1
Being, described horizontal support platform interior is connected with cooling circulating water, and described horizontal support platform is steel plate.
The device of long monitoring, its feature more than the preform drawing the most according to claim 1
Being, described wire-drawing operation panel can read the number of the admission machine take-up length coordinating wire-drawing process
According to.
5. a long monitoring method more than preform drawing, the method is any one based on claim 1-4
The device of long monitoring more than the preform drawing described in Xiang, it is characterised in that include following step
Rapid:
Step one: before hanging preform, first makes zero wire drawing control panel；
Step 2: preset the qualitative data remaining conehead after preform pulls in program, if
Determine fibre cladding diameter data, set quality correction constant, set preform density；Pass through
Wire drawing control panel manually sets preform tail pipe qualitative data；
Step 3: on optical fiber, admission machine is at the moment, LOAD CELLS collects the mass number of preform
According to；
Step 4: admission machine on optical fiber, admission machine length makes zero, and starts Real-time Collection admission machine take-up long
Degree；
Step 5: Automatic Program calculates, draw real-time remaining preform can the length of wire drawing, i.e.
Long L more than preform drawingi；
Li=4 × (M0-M1-M2+Mj)/(ρ×π×D2)-L0
Wherein, M0Admission machine quality of weighing at the moment on-wire drawing optical fiber；
M1-set the quality remaining conehead after preform pulls；
M2The quality of-tail pipe；
Mj-quality correction constant；
ρ-density of optic fibre；
D-fibre cladding diameter；
L0-admission machine take-up length；
M0The data gathered at the moment for admission machine on wire drawing optical fiber, L0For real-time data collection, and show
In wire drawing control panel, M1、ρ、Mj, D be definite value, need manually to preset in a program, M2
For needing the value being manually entered, M every timejBy conehead quality will be remained after actual for preform pulling
With its setting value M1Deviation averagely get, and for different wire-drawer-towers and dissimilar preform,
MjValue difference.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610429574.XA CN105906197B (en) | 2016-06-16 | 2016-06-16 | It is a kind of to be used for the long device and method monitored more than preform drawing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610429574.XA CN105906197B (en) | 2016-06-16 | 2016-06-16 | It is a kind of to be used for the long device and method monitored more than preform drawing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105906197A true CN105906197A (en) | 2016-08-31 |
| CN105906197B CN105906197B (en) | 2018-10-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107255602A (en) * | 2017-06-06 | 2017-10-17 | 烽火通信科技股份有限公司 | The method and device of the loose volume density of on-line measurement |
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| CN205803320U (en) * | 2016-06-16 | 2016-12-14 | 江苏亨通光纤科技有限公司 | A kind of device of long monitoring more than the preform drawing |
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2016
- 2016-06-16 CN CN201610429574.XA patent/CN105906197B/en not_active Expired - Fee Related
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0283233A (en) * | 1988-09-21 | 1990-03-23 | Hitachi Cable Ltd | Production of optical fiber |
| US5183490A (en) * | 1990-10-25 | 1993-02-02 | The Furukawa Electric Co., Ltd. | Optical fiber soot synthesis apparatus |
| CN1489555A (en) * | 2000-12-13 | 2004-04-14 | 康宁股份有限公司 | Method and apparatus for automated manufacturing optical fiber |
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| CN107255602A (en) * | 2017-06-06 | 2017-10-17 | 烽火通信科技股份有限公司 | The method and device of the loose volume density of on-line measurement |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105906197B (en) | 2018-10-23 |
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