CN107056091B - Fast high-stability coloring and curing device for optical fiber cable - Google Patents
Fast high-stability coloring and curing device for optical fiber cable Download PDFInfo
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- CN107056091B CN107056091B CN201611085325.XA CN201611085325A CN107056091B CN 107056091 B CN107056091 B CN 107056091B CN 201611085325 A CN201611085325 A CN 201611085325A CN 107056091 B CN107056091 B CN 107056091B
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C25/00—Surface treatment of fibres or filaments made from glass, minerals or slags
- C03C25/10—Coating
- C03C25/104—Coating to obtain optical fibres
- C03C25/106—Single coatings
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
- C08J7/04—Coating
- C08J7/0427—Coating with only one layer of a composition containing a polymer binder
Abstract
The invention discloses a rapid high-stability coloring and curing device for an optical fiber cable, wherein at least 2 ink coating frames with protective partition plates at the bottoms are arranged in an ink coating frame from top to bottom, and at least 2 curing frames with protective partition plates at the bottoms are arranged in the curing frame from top to bottom; the paying-off tension regulator comprises a paying-off guide wheel and a paying-off dancing wheel, and the paying-off guide wheel is arranged on the ink coating frame through a fixed rotating shaft; all install the traction wheel in proper order in the frame of drawing, receive line tension adjuster and be located the traction wheel, receive the guide pulley between the line tension adjuster, the center pin and a traction motor of traction wheel are connected, receive line tension adjuster including receiving the line guide pulley and receiving the line dancing wheel. The rapid high-stability coloring and curing device realizes the function that three optical fibers can be coated simultaneously, does not interfere with each other, has stable performance, large frame rigidity, stable supporting whole machine and good vibration and noise.
Description
Technical Field
The invention relates to the field of optical fiber ink coloring, in particular to a rapid high-stability coloring and curing device for an optical fiber cable.
Background
Optical fiber is a short term for optical fiber, and is a light conduction tool using the principle of total reflection in a fiber made of glass or plastic. After the optical fiber is produced, the optical fiber is generally required to be dyed, the use is convenient, but the existing optical fiber dyeing process is too complex, the manual operation is required in the dyeing and curing process, a large amount of labor force is wasted, and the volume of the existing dyeing device is too large.
The chromatographic arrangement adopted by the company is carried out according to the radio and television standard, and can also be arranged according to the standard chromatographic arrangement of the information industry ministry when the user requires. When the number of optical fibers in each tube is more than 12 cores, the optical fibers can be distinguished by blending other colors according to different colors and different proportions according to needs. The optical fiber should meet the following requirements after being colored: 1. the colored fibers did not migrate and fade (as did wiping with acetone or alcohol). 2. The optical fiber flat cable is neat and flat, and is not disordered and pressed. 3. The fiber attenuation index meets the requirement, and the OTDR test curve has no steps and the like.
The optical fiber coloring process uses an optical fiber coloring machine which comprises an optical fiber paying-off part, a coloring mold, an ink supply system, an ultraviolet curing furnace, a traction part, an optical fiber take-up part, an electric appliance control part and the like. The main principle is that the ultraviolet curing ink is coated on the surface of the optical fiber through a coloring mold, and is fixed on the surface of the optical fiber after being cured through an ultraviolet curing furnace, so that the optical fiber easy for color separation is formed. The ink used was an ultraviolet curable ink.
Disclosure of Invention
The invention provides a rapid high-stability coloring and curing device for an optical fiber cable, which realizes the function that three optical fibers can be coated simultaneously, does not interfere with each other, has stable performance, large frame rigidity, stable supporting whole machine and good vibration and noise, and avoids the damage caused by the impact on the optical fiber at the tail end of the optical fiber due to high-speed production during production.
In order to achieve the purpose, the invention adopts the technical scheme that: a fast high-stability coloring and curing device for an optical fiber cable, comprising: the optical fiber drawing and winding device comprises a paying-off frame, an ink coating frame, a curing frame, a drawing frame and a winding frame which are sequentially arranged, wherein the paying-off frame is internally provided with at least 2 paying-off frames with supporting plates at the bottoms from top to bottom, the ink coating frame is internally provided with at least 2 ink coating frames with protecting partition plates at the bottoms from top to bottom, the curing frame is internally provided with at least 2 curing frames with protecting partition plates at the bottoms from top to bottom, the winding frame is internally provided with at least 2 winding frames with supporting plates at the bottoms from top to bottom, the drawing frame is internally provided with at least 2 drawing frames with supporting plates at the bottoms from top to bottom, so that at least 2 optical fiber channels are formed from top to bottom, paying-off and arranging units for storing wound optical fibers are all arranged in the paying-off frames, and UV (ultraviolet) light curing furnaces are all arranged;
the ink coating device comprises an ink coating frame, a printing ink tank, a static electricity remover and a coating unit, wherein the printing ink coating frame is internally and sequentially provided with the paying-off tension regulator, the static electricity remover and the coating unit, the paying-off tension regulator comprises a paying-off guide wheel and a paying-off dancing wheel, the paying-off guide wheel is arranged on the printing ink coating frame through a fixed rotating shaft, the paying-off dancing wheel is connected to a rotating mechanism arranged on the printing ink coating frame through a swinging rod, the coating unit comprises the printing ink tank and a printing ink barrel connected with the printing;
the winding device is characterized in that a traction wheel, a winding tension regulator and a guide wheel positioned between the traction wheel and the winding tension regulator are sequentially arranged in the traction frame, a central shaft of the traction wheel is connected with a traction motor, the winding tension regulator comprises a winding guide wheel and a winding dancing wheel, the winding guide wheel is arranged on the traction frame through a fixed rotating shaft, the winding dancing wheel is connected to a rotating mechanism arranged on the traction frame through a swinging rod, winding and arranging units for winding optical fibers are arranged in the winding frame, and a transparent arc-shaped protective cover is arranged on the winding and arranging units along the circumferential direction of the winding and arranging units;
the electric control cabinet is provided with a touch screen, a function key group and a power key.
The further improved technical scheme in the technical scheme is as follows:
in the scheme, the static eliminator consists of a high-voltage power supply generator and a discharge electrode, nearby air is ionized into a large number of positive and negative ions through high-voltage corona discharge at the tip of an ion needle, and then the positive and negative ions are blown to the surface of an object by a blowing device to neutralize static electricity, or static electricity is neutralized by directly enabling the static eliminator to be close to the surface of the object.
Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages:
the device for quickly coloring and curing the optical fiber and the optical cable with high stability can produce optical fibers quickly and stably for a long time, can compatibly produce optical fibers with various length specifications of 100KM and below 100KM on the market, realizes the function that three optical fibers can be coated simultaneously, does not interfere with each other, has stable performance, large frame rigidity, stable supporting whole machine and good vibration and noise, and can produce optical fibers with the length specifications of 100KM and below 100 KM; secondly, its receipts winding displacement unit is installed a transparent arc protection casing along its circumference and has the optic fibre and prevent getting rid of and beat the function, avoided during production because high-speed production causes the damage that the impact brought to optic fibre terminal optic fibre to influence product quality.
Drawings
FIG. 1 is a schematic structural view of a rapid high-stability coloring and curing apparatus for optical fiber cables according to the present invention;
FIG. 2 is a schematic view of a portion of the structure of FIG. 1;
FIG. 3 is a schematic structural diagram of a frame of the apparatus for rapid, highly stable coloring and curing of optical fiber cables according to the present invention.
In the above drawings: 1. a pay-off frame; 101. a wire frame is laid out; 2. an ink-coated frame; 201. an ink application frame; 3. curing the frame; 301. curing the frame; 4. a traction frame; 401. a traction frame; 5. a wire take-up frame; 501. a wire-collecting frame; 6. a support pallet; 7. a protective barrier; 8. a wire discharge unit; 9. UV light curing oven; 10. paying off a tension regulator; 11. a static eliminator; 12. a coating unit; 13. paying off a guide wheel; 14. paying off the dancing wheel; 15. a swing lever; 16. a rotation mechanism; 17. a traction wheel; 18. a take-up tension adjuster; 19. a guide wheel; 20. a wire take-up guide wheel; 21. take-up dancing wheels; 22. a swing lever; 23. a rotation mechanism; 24. a winding and arranging unit; 241. clamping the disc; 25. a transparent protective cover; 26. an electric control cabinet; 261. a touch screen; 262. a function key group; 263. a power key; 27. a front door panel; 28. a rear door panel.
Detailed Description
The invention is further described with reference to the following figures and examples:
example (b): a fast high-stability coloring and curing device for an optical fiber cable, comprising: the paying-off frame 1, the printing ink coating frame 2, the curing frame 3, the traction frame 4 and the take-up frame 5 which are sequentially discharged, the paying-off frame 101 with at least 2 bottom-mounted supporting plates 6 is arranged in the paying-off frame 1 from top to bottom, the printing ink coating frame 201 with at least 2 bottom-mounted protecting partition plates 7 is arranged in the printing ink coating frame 2 from top to bottom, the curing frame 301 with at least 2 bottom-mounted protecting partition plates 7 is arranged in the curing frame 3 from top to bottom, the take-up frame 501 with at least 2 bottom-mounted supporting plates 6 is arranged in the take-up frame 5 from top to bottom, the traction frame 401 with at least 2 bottom-mounted supporting plates 6 is arranged in the traction frame 4 from top to bottom, so that at least 2 optical fiber channels are formed from top to bottom, the paying-off unit 8 wound with optical fibers is arranged in the paying-off frame 101, UV light curing ovens 9 are arranged in the curing frames 301;
the pay-off frame 1 and the take-up frame 5 are formed by welding 80 × 6 square tubes, and three mounting platforms are welded for mounting the pay-off and take-up units 8 and 24. The side and the rear side are provided with sealing plates to facilitate daily maintenance.
The paying-off tension regulator 10, the static eliminator 11 and the coating unit 12 are sequentially arranged in the ink coating frame 201, the paying-off tension regulator 10 comprises a paying-off guide wheel 13 and a paying-off dancing wheel 14, the paying-off guide wheel 13 is arranged on the ink coating frame 201 through a fixed rotating shaft, and the paying-off dancing wheel 14 is connected to a rotating mechanism 16 arranged on the ink coating frame 201 through a swinging rod 15 to ensure that a released optical fiber has constant tension and enters an ink grinding tool to be coated with dye after static electricity and dust are eliminated;
the coating unit 12 comprises an ink pool and an ink barrel communicated with the ink pool through a pipeline, and the static eliminator 11 is positioned between the pay-off tension regulator 10 and the coating unit 12;
a traction wheel 17, a take-up tension regulator 18 and a guide wheel 19 positioned between the traction wheel 17 and the take-up tension regulator 18 are sequentially arranged in the traction frame 401,
the center pin of traction wheel 17 is connected with a traction motor, receive line tension adjuster 18 including receiving line guide pulley 20 and receiving line dancing wheel 21, receive line guide pulley 20 and install on pulling frame 401 through fixed rotating shaft, receive line dancing wheel 21 and link through a swinging arms 22 and install on the rotary mechanism 23 who pulls frame 401, all install the receipts winding displacement unit 24 that is used for receiving the optic fibre in receiving the line frame 501, this receipts winding displacement unit 24 installs a transparent arc protection casing 25 along its circumference.
The static eliminator 11 is composed of a high voltage power generator and a discharge electrode, ionizes nearby air into a large number of positive and negative ions through high voltage corona discharge at the tip of an ion needle, and then blows the positive and negative ions to the surface of an object by a blowing device to neutralize static electricity, or directly neutralizes static electricity by enabling static eliminating equipment to be close to the surface of the object.
The electric control cabinet 26 is further provided with three touch screens 261, three function key groups 262 and three power keys 263, wherein the three touch screens 261, the three function key groups 262 and the three power keys 263 are arranged on the electric control cabinet 26 and are used for separately and independently controlling the three optical fiber channels.
The front door panel 27 is mounted on one end face of the wire frame 101, which is opposite to the ink coating frame 201, and the rear door panel 28 is mounted on one end face of the wire frame 501, which is opposite to the traction frame 401.
The working process of the rapid high-stability coloring and curing device for the optical fiber cable comprises the following steps:
the power of the pay-off mechanism is provided by a 5KW servo motor so as to realize the active pay-off of the optical fiber. The power of the moving mechanism is also provided by a 750W servo motor, an output shaft of the AC servo motor is directly connected with the rolling screw rod through an elastic coupling to drive the pay-off mechanism to complete the back-and-forth movement of the optical fiber during pay-off, so that the moving mechanism is controlled to enable the optical fiber disc to move back and forth, and the shake of the optical fiber during high-speed pay-off is reduced to the minimum. The magnitude of the fiber pay-off tension is provided by the dancer. The dancer shaft is connected with a pure angle sensor, in the production process, the dancer tension swing rod drives the angle change, the sensor detects the swing of the tension swing rod, and then the rotating speed of the take-up and pay-off motor is controlled so as to be automatically synchronous, the optical fiber tension swing rod is always in the horizontal state, and the tension is kept constant.
Along the operation direction of the production line, the front end is provided with an optical fiber dust removal device, and the rear end is provided with a pressure coating system. The temperature of the heater is regulated by a sensor. The thickness of the optical fiber coloring layer is controlled by the mold. The base of the fixed die is sleeved, the center position can be accurately positioned after being adjusted, and the pressure of the ink supply device can be adjusted and displayed from the range of 0-2.0 bar.
In order to ensure the coloring quality at high speed, the production line is equipped with two horizontal UV curing ovens. The curing oven mainly comprises a reflecting plate, an oven body shell, a UV lamp tube, an air draft system and the like. Immediately after the fiber is colored, it enters the oven for curing. The curing is carried out under the condition of filling inert gas, and high-speed coloring can be realized. 2 sets of inlet fans suitable for the UV curing device are arranged above the UV curing furnace, and the vibration of the UV curing furnace does not influence the production of products. The UV curing furnace is adjustable, and the position of the light focus point of the parabolic reflector is ensured to be the position of the operation center of the optical fiber body and is positioned in a cylinder with the light focusing diameter being 1 mm. The curing oven has a reliable protection device to ensure the personal safety and prevent the bad optical fiber curing caused by pollution. The nitrogen protection device can ensure that 100 percent of oxygen molecules of the coated optical fiber are removed to be in contact with the coating ink layer in the photocuring process.
The wire winding and static removing unit comprises a traction wheel, a swing arm type dancer, a photoelectric reversing control assembly, a static removing device, a moving mechanism, a wire winding mechanism and the like. The surface of the traction wheel is treated in order to improve the wear resistance. After the optical fiber enters the traction wheel, the optical fiber is driven by the friction between the optical fiber and the traction wheel. The meter is counted by pulses sent by the encoder of the motor itself. The circumference of the traction wheel is 0.5m, the meter-counting precision of the length of the optical fiber is high, and the meter-counting precision is as high as 0.2%. The structure of the optical fiber winding displacement assembly is the same as that of the movable optical fiber active paying-off assembly, the optical fiber winding displacement assembly is accurately positioned by a photoelectric sensor, the reversing is performed by an encoder of an alternating current servo motor, the position is adjustable, and the optical fiber winding displacement assembly has the characteristics of tidy and accurate winding displacement and the like.
Because the working speed of the machine is very high, friction is easily generated between the optical fiber and the guide wheel when the machine works, and static electricity is easily generated. In order to eliminate such static electricity, a static electricity eliminating system is installed in front of the optical fiber upper tray. The system mainly comprises a high-voltage power supply, a static eliminating rod, a static eliminating spray head and the like.
Electrical control system
1 electrical parameter
1.1 optical fiber paying-off motor: 5KW loose AC servo motor
1.2 optic fibre pay off rack winding displacement motor: 750W loose AC servo motor
1.3 traction motor: 750W loose AC servo motor
1.4 optical fiber take-up motor: 5KW loose AC servo motor
1.5 take-up frame winding displacement motor: 750W loose AC servo motor
1.6 curing oven power: 6KW 2 table
1.7 rewinding speed: 1500m/min to 2300m/min
Coloring speed: 1500m/min
1.8 failure alarm: automatic stop
1.9 working mode: continuous operation
2 principle of electrical control
2.1 description of the principle of Electrical control
The international advanced loose AC servo driving system produced in Japan is adopted, and the system has the advantages of high control precision, low noise, high efficiency, reliable work and the like; and the PLC of the S7-300 programmable controller of German Siemens company is adopted for centralized control, so that the whole set of electric control system is more stable and reliable to control. A Siemens 10.4-inch touch screen is adopted, and comprises components such as dynamic display, alarm, trend, control strategy, control network communication and the like, so that a friendly user interface is provided, and the equipment operation is more visual and simpler.
The system consists of an optical fiber winding and unwinding device, a traction device, a winding and unwinding device, a UV curing furnace and the like. The technical key point is that the PLC user program and the flat cable are automatically reversed at high speed, so that manual intervention is reduced. The PLC adopts Siemens S7-300 series with extremely high cost performance. The method is excellent in the aspects of extremely high reliability; a very rich instruction set; easy to control; convenient operation; rich built-in integration functions; strong real-time characteristics; strong communication capability and abundant expansion modules; the best adaptability; directly connected with the sensor and the actuator; the flexibility is strong, and the user program is very easy to adjust.
The PLC program of the coloring machine designs a series of control and protection alarm functions completely according to the process requirements, and the speed-up and speed-down program ensures that all motors run synchronously in strict proportion so as to ensure that the whole system runs stably and reliably without damaging optical fibers.
The system has two working modes of selection, one is in a coloring state, and the other is in a rewinding state. By selecting coloring/rewinding on the display. The ultraviolet curing system and the air cooling system are put into operation only in a coloring state, and the coating heating system is determined according to the process requirement. The other control systems can be put into operation in any state.
When the rapid high-stability coloring and curing device for the optical fiber cable is adopted, the function that three optical fibers can be coated simultaneously is realized, mutual interference is avoided, the performance is stable, the frame rigidity is high, the supporting whole machine is stable, the vibration and the noise are good, and the optical fiber cable can be used for producing optical fibers with the specification of below 100 km; secondly, its receipts winding displacement unit is installed a transparent arc protection casing along its circumference and has the optic fibre and prevent getting rid of and beat the function, avoided during production because high-speed production causes the damage that the impact brought to optic fibre terminal optic fibre to influence product quality.
The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.
Claims (1)
1. A quick high stable solidification equipment that colourizes for fiber optic cable which characterized in that: the method comprises the following steps: the paying-off frame comprises a paying-off frame (1), an ink coating frame (2), a curing frame (3), a traction frame (4) and a take-up frame (5) which are sequentially discharged, wherein the paying-off frame (1) is internally provided with at least 2 paying-off frames (101) with bottom parts provided with supporting support plates (6) from top to bottom, the ink coating frame (2) is internally provided with at least 2 ink coating frames (201) with bottom parts provided with protective baffles (7) from top to bottom, the curing frame (3) is internally provided with at least 2 curing frames (301) with bottom parts provided with protective baffles (7) from top to bottom, the take-up frame (5) is internally provided with at least 2 take-up frames (501) with bottom parts provided with supporting support plates (6) from top to bottom, the traction frame (4) is internally provided with at least 2 traction frames (401) with bottom parts provided with supporting support plates (6) from top to bottom, so as to, the pay-off frames (101) are internally provided with pay-off and pay-off units (8) used for storing wound optical fibers, and the curing frames (301) are internally provided with UV (ultraviolet) curing ovens (9);
the paying-off tension regulator (10), the static eliminator (11) and the coating unit (12) are sequentially installed in the ink coating frame (201), the paying-off tension regulator (10) comprises a paying-off guide wheel (13) and a paying-off dancing wheel (14), the paying-off guide wheel (13) is installed on the ink coating frame (201) through a fixed rotating shaft, the paying-off dancing wheel (14) is connected to a rotating mechanism (16) installed on the ink coating frame (201) through a swinging rod (15), the coating unit (12) comprises an ink pool and an ink barrel connected with the ink pool through a pipeline, and the static eliminator (11) is located between the paying-off tension regulator (10) and the coating unit (12);
the optical fiber take-up and take-up device is characterized in that a traction wheel (17), a take-up tension regulator (18) and a guide wheel (19) positioned between the traction wheel (17) and the take-up tension regulator (18) are sequentially mounted in the traction frame (401), a central shaft of the traction wheel (17) is connected with a traction motor, the take-up tension regulator (18) comprises a take-up guide wheel (20) and a take-up dancing wheel (21), the take-up guide wheel (20) is mounted on the traction frame (401) through a fixed rotating shaft, the take-up dancing wheel (21) is connected to a rotating mechanism (23) mounted on the traction frame (401) through a swinging rod (22), take-up and take-up wire arranging units (24) used for taking up optical fibers are mounted in the take-up wire frame (501), and a transparent arc-shaped protective cover (;
the electric control cabinet (26) is also included, and a touch screen (261), a function key group (262) and a power key (263) are arranged on the electric control cabinet (26); the static eliminator (11) is composed of a high-voltage power generator and a discharge electrode.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611085325.XA CN107056091B (en) | 2015-03-19 | 2015-03-19 | Fast high-stability coloring and curing device for optical fiber cable |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510120878.3A CN104761156B (en) | 2015-03-19 | 2015-03-19 | Optical fiber cable coloring apparatus |
| CN201611085325.XA CN107056091B (en) | 2015-03-19 | 2015-03-19 | Fast high-stability coloring and curing device for optical fiber cable |
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| CN201510120878.3A Division CN104761156B (en) | 2015-03-19 | 2015-03-19 | Optical fiber cable coloring apparatus |
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| CN107056091A CN107056091A (en) | 2017-08-18 |
| CN107056091B true CN107056091B (en) | 2020-02-21 |
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| CN201611085325.XA Active CN107056091B (en) | 2015-03-19 | 2015-03-19 | Fast high-stability coloring and curing device for optical fiber cable |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106517824A (en) * | 2016-11-18 | 2017-03-22 | 浙江亨通光网物联科技有限公司 | Color ring printing and coloring one-step forming technology and device for optical fibers |
| CN107561656B (en) * | 2017-09-06 | 2023-09-22 | 通鼎互联信息股份有限公司 | Optical fiber coloring plastic-coated composite production line and production process thereof |
| CN107857486B (en) * | 2017-10-26 | 2021-06-29 | 深圳市贝优通新能源技术开发有限公司 | Intelligent processing equipment for optical fiber coating based on Internet of things |
| CN108919444B (en) * | 2018-07-20 | 2020-02-18 | 长飞光纤光缆股份有限公司 | Online UVLED curing and coloring device of two sets of optical fibers in constant operation tension mode |
| CN109632846B (en) * | 2018-12-06 | 2022-06-03 | 安徽光纤光缆传输技术研究所(中国电子科技集团公司第八研究所) | Preparation method of large-area high-resolution plastic scintillating fiber array imaging panel |
| CN110053234A (en) * | 2019-05-08 | 2019-07-26 | 成都亨通光通信有限公司 | A kind of three core coloring moulds of optical cable production |
| CN110058368A (en) * | 2019-05-08 | 2019-07-26 | 成都亨通光通信有限公司 | A kind of optical cable bull coloring energy-saving production line |
| CN110286451A (en) * | 2019-05-09 | 2019-09-27 | 成都亨通光通信有限公司 | A kind of optical cable multi-fiber coloring plastic sleeve integrated energy-saving production line |
| CN110876999B (en) * | 2019-12-06 | 2020-12-18 | 扬州吉驰信息科技有限公司 | Coloring and coating device for optical fiber |
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Also Published As
| Publication number | Publication date |
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| CN104761156B (en) | 2017-05-17 |
| CN104761156A (en) | 2015-07-08 |
| CN107056091A (en) | 2017-08-18 |
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