CN104071991B - Coating device of reducing bubbles in optical fiber coating - Google Patents
Coating device of reducing bubbles in optical fiber coating Download PDFInfo
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- CN104071991B CN104071991B CN201410341817.5A CN201410341817A CN104071991B CN 104071991 B CN104071991 B CN 104071991B CN 201410341817 A CN201410341817 A CN 201410341817A CN 104071991 B CN104071991 B CN 104071991B
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Abstract
The invention discloses a coating device of reducing bubbles in optical fiber coating. The coating device of reducing bubbles in the optical fiber coating comprises a main tank, an auxiliary tank and a gas source; the coating device of reducing bubbles in the optical fiber coating is characterized in that the main tank is communicated with the auxiliary tank through a connecting pipe which goes deep into the tank mouth; a conveying pipe is further connected onto the main tank in an inserted manner; the gas source is connected to the main tank through a main electronically controlled proportioning valve and a main electromagnetic valve; the gas source is connected to the auxiliary tank through an auxiliary electronically controlled proportioning valve and an auxiliary electromagnetic valve; the main electronically controlled proportioning valve and the auxiliary electronically controlled proportioning valve control the air pressure which is put into the main tank and the auxiliary tank respectively, and maintain the constant air pressure difference between the main tank and the auxiliary tank. According to the invention, the main electronically controlled proportioning valve and the auxiliary electronically controlled proportioning valve are utilized to control the air pressure put into the main tank and the auxiliary tank, so that the air pressure of the main tank and the auxiliary tank change with the fluctuation of the wire drawing speed and the constant air pressure difference between the main tank and the auxiliary tank is maintained; smooth transportation of the optical fiber coating is ensured; the generation of the bubbles in the optical fiber coating is reduced; the coating inside the main tank is avoided being pumped out; the quality of optical fiber wire drawing is ensured.
Description
Technical field
The present invention relates to optic fibre manufacturing technology field, more particularly, to a kind of coating unit reducing optical fiber coatings bubble.
Background technology
Fiber drawing process is to manufacture one of basic step of optical fiber.Preform is fed system and is sent into is higher than 2000
Heat in the smelting furnace of DEG C high temperature, prefabricated rods export pull-out from lower furnace after softening in the form of filament, through monitoring bare fibre
The caliper of diameter after suitably cooling down, not yet starts because external environment affects to expand in the micro-crack of bare fibre glass surface
Before dissipating, coat rapidly two-layer ultraviolet curing acrylic resin in the optical fiber surface of cleaning and be protected by.After curing of coatings,
Optical fiber is wound onto on take-up reel, gets ready for subsequent operation.On optical fiber, the purpose of applying coating is to protect bare fibre not
With external world's dust particle contact, these particles can significantly reduce the intensity of optical fiber, and coating can also prevent the moisture etch in the external world
Optical fiber, it is to avoid loss increases.In addition to being provided that intensity protection, it can also provide mechanicalness to optical fiber in various environment to coating
Can protection.
The optical fiber coatings coating unit commonly used at present is two-stage filled type, and concrete mode is to have main tank and two paintings of auxiliary tank
Batch can, the coating in auxiliary tank is sent to main tank by air pressure after the first assembly of some row such as pipeline valve, then again from main tank
It is sent at the coating die of drawing optical fibers and be coated parcel processing.Pressure in its main tank of existing coating unit can be with light
Fine drawing speed raises and needs to increase, until drawing speed is stable, the pressure in main tank keeps substantially constant.And the gas in auxiliary tank
Pressure is constant all the time, and the pressure reduction of auxiliary tank and main tank can produce fluctuation because of drawing speed change.It is to ensure coating quality at present, lead to
Often meeting installation paint filter on the pipeline of main tank rear end, the impurity in filter coating material, with the prolongation of filter use time,
Filter is gradually increased to the resistance of coating, and the air pressure in main tank also can increase accordingly, but the air pressure of auxiliary tank is not suitable
When dynamic change, will affect coating filling.For existing coating unit, if pressure reduction is too small, can be because of master
Coating recharge rate in tank is less than depletion rate, and leads to the coating in main tank to be vented, and in follow-up wire drawing, optical fiber cannot apply
The coating parcel of material, causes serious production unnatural effects；If pressure reduction is excessive, when can make auxiliary tank to main tank filling paint,
Coating material flow rate is too fast to produce a large amount of bubbles, the coating with a large amount of bubbles when entering and becoming owner of tank, can make light after being coated on optical fiber
The a large amount of granules of fine generation, reduce optical fiber quality, or even it is fine to cause wire drawing to break, and reduces production efficiency.
Content of the invention
The technical problem to be solved and the technical assignment proposing are that prior art is improved, and provide one kind
Reduce the coating unit of optical fiber coatings bubble, the fiber coating apparatus solving in current technology are easily caused painting when being coated
Produce bubble in material, have a strong impact on the problem of optical fiber quality.
For solving above technical problem, the technical scheme is that：
A kind of coating unit reducing optical fiber coatings bubble, including main tank, auxiliary tank and source of the gas it is characterised in that described
Main tank and auxiliary tank, by going deep into the connecting tube UNICOM of tank mouth, connecting tube are provided with connection tube valve, main tank are also plugged with defeated
Send pipe, source of the gas is connected to main tank by main electronically controlled proportional valve and master solenoid, source of the gas passes through auxiliary electronically controlled proportional valve and auxiliary electromagnetism again
Valve connects to auxiliary tank, and main electronically controlled proportional valve and auxiliary electronically controlled proportional valve distinguish the air pressure in main tank and auxiliary tank for the control input, keep
Both constant air pressure are poor.Main tank and auxiliary tank are all adopted automatically controlled ratio by the coating unit reducing optical fiber coatings bubble of the present invention
Example valve controls air pressure, and the air pressure in auxiliary tank fluctuates with main tank pressure fluctuation, thus ensureing the pressure differential between main tank and auxiliary tank
Constant, then the coating flow of main tank is transported to through connecting tube by auxiliary tank and flow velocity can keep stable equilibrium, be not in excessive
Fluctuation so that coating material produce bubble, affect optical fiber coating quality.Due to main electronically controlled proportional valve and auxiliary electronically controlled proportional valve
Effect it can be ensured that no matter drawing speed how to fluctuate change, transported by the coating of auxiliary tank to main tank and can ensure steady, subtract
The generation of few bubble, it is ensured that main tank coating will not draw sky, improves wire drawing optical fiber quality.
Further, the air pressure 0.01～0.30Mpa bigger than the air pressure of main tank of described auxiliary tank, under this pressure difference, can
To ensure that producing persistence is normally carried out, the coating content in main tank can keep more constant state, is not in coating mistake
The phenomenon that many or coating is vented.
Further, the air pressure 0.1Mpa bigger than the air pressure of main tank of described auxiliary tank, coats best results under this pressure reduction.
Further, on described main tank and auxiliary tank, returning apparatus have air gauge, using the main tank of air gauge real-time detection and auxiliary
Air pressure in tank, grasps the operation conditions of coating unit, it is to avoid unusual condition occurs.
Compared with prior art, the invention has the advantages that：
The coating unit reducing optical fiber coatings bubble of the present invention utilizes main electronically controlled proportional valve and auxiliary electronically controlled proportional valve
The air pressure in main tank and auxiliary tank for the control input, so that both air pressure fluctuates with drawing speed and changes, keeps both respectively
Constant air pressure difference is it is ensured that the conveying of coating steadily, reduces the generation of bubble in coating, can also avoid the coating in main tank simultaneously
It is evacuated the quality it is ensured that drawing optical fibers；
The coating unit structure of minimizing optical fiber coatings bubble of the present invention is simple, low cost of manufacture, strong applicability, system
Facilitate, high financial profit.
Brief description
Fig. 1 is the structural representation of the present invention.
Specific embodiment
The enforcement it is clear that described will be clearly and completely described to the technical scheme in the embodiment of the present invention below
Example is only a part of embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, this area is common
The every other embodiment that technical staff is obtained under the premise of not making creative work, broadly falls into the model of present invention protection
Enclose.
The embodiment of the present invention discloses a kind of coating unit reducing optical fiber coatings bubble, real-time monitoring master in coating procedure
Tank and the air pressure of auxiliary tank, make pressure differential between the two keep constant, so that coating is stable to the conveying of main tank from auxiliary tank, it is to avoid
Produce a large amount of bubbles, improve optical fiber coating quality.
As shown in figure 1, a kind of coating unit reducing optical fiber coatings bubble, including main tank 1, auxiliary tank 2 and source of the gas 3, main tank 1
With auxiliary tank 2 by going deep into connecting tube 4 UNICOM of tank mouth, connecting tube 4 is provided with connection tube valve 11, main tank is also plugged with defeated
Send pipe 5, source of the gas 3 is connected to main tank 1 by main electronically controlled proportional valve 6 and master solenoid 7, source of the gas 3 passes through auxiliary electronically controlled proportional valve 8 He again
Auxiliary electromagnetic valve 9 connects to auxiliary tank 2, and main electronically controlled proportional valve 6 and auxiliary electronically controlled proportional valve 8 difference control input are in main tank 1 and auxiliary tank 2
Air pressure, keep that both constant air pressure are poor, the air pressure 0.01～0.30Mpa bigger than the air pressure of main tank 1 of auxiliary tank 2, in 0.1Mpa
Best results.When here stablizes pressure difference, the air pressure of main tank 1 and auxiliary tank 2 is controlled with drawing speed fluctuation by electronically controlled proportional valve
Change, the conveying of coating with held stationary, can be prevented effectively from the generation of bubble, ensure that the coating in main tank will not draw sky simultaneously,
Ensure the quality of drawing optical fibers.
Feeding mouth in auxiliary tank 2 for the connecting tube 4 is less than auxiliary tank 2 inside courtyard minimum level, near the bottom of auxiliary tank 2, conveying
Feeding mouth in main tank 1 for the pipe 5 is less than main tank 1 inside courtyard minimum level, near the bottom of main tank 1.Connecting tube 4 is in main tank 1
Discharging opening be higher than main tank 1 inside courtyard highest liquid level.Delivery pipe 5 is pressed close in discharging opening bending in main tank 1 for the connecting tube 4, applies
Material exports from connecting tube 4 and flows into main tank 1 along delivery pipe 5 tube wall.Between the tube wall of the discharging opening of connecting tube 4 and delivery pipe 5
Gap is 2 ± 0.5mm.Coating can be prevented effectively from using above pipeline mode and produce bubble, connecting tube 4 in course of conveying
With the feeding mouth of delivery pipe 5 be all located at tank bottoms, it is to avoid in tank, air enters in pipeline, connecting tube 4 output coating along conveying
The tube wall of pipe 5 is flowed in main tank 1, it is to avoid drippage produces bubble.
Main tank 1 and returning apparatus on auxiliary tank 2 have air gauge 10, can be with real-time monitoring of tank internal gas pressure, it is to avoid produce unexpected generation.
When using the coating unit reducing optical fiber coatings bubble of the present invention, the air pressure in auxiliary tank 2 is more than main tank 1
In air pressure, the coating in auxiliary tank 2 is pressed in connecting tube 4, and coating is from the discharging opening of connecting tube 4 along the tube wall stream of delivery pipe 5
Down in main tank 1, air pressure present in main tank 1 makes the coating in winner's tank 1 be pressed into delivery pipe 5 to be transported to enter at drawing optical fibers
Row coating parcel, with the rising of drawing speed, main electronically controlled proportional valve 6 controls the air pressure increasing in main tank 1, meanwhile auxiliary electricity
Control proportioning valve 8 also increases the air pressure in auxiliary tank 2 it is ensured that main tank 1 and auxiliary tank 2 have constant pressure differential so that main tank 1 inside courtyard
Recharge rate and depletion rate reach the state of balance, the conveying of coating steadily, reduces the generation of bubble, ensures to produce and continues
It is normally carried out.
Meanwhile, after the coating emptying in auxiliary tank 2, then close and connect tube valve 11, only main tank 1 is in running order, this
When can open auxiliary tank 2 and add coating inside, turn off auxiliary tank 2 lid after adding enough coating and open connection tube valve
11, make whole device continue normal operation.
The above is only the preferred embodiment of the present invention it is noted that above-mentioned preferred implementation be not construed as right
The restriction of the present invention, protection scope of the present invention should be defined by claim limited range.For the art
For those of ordinary skill, without departing from the spirit and scope of the present invention, some improvements and modifications can also be made, these change
Enter and retouch also to should be regarded as protection scope of the present invention.
Claims (3)
1. a kind of reduce optical fiber coatings bubble coating unit, including main tank (1), auxiliary tank (2) and source of the gas (3) it is characterised in that
Described main tank (1) and auxiliary tank (2) are provided with connection tube valve by going deep into connecting tube (4) UNICOM of tank mouth, connecting tube on (4)
(11), main tank is also plugged with delivery pipe (5), source of the gas (3) is connected to master by main electronically controlled proportional valve (6) and master solenoid (7)
Tank (1), source of the gas (3) passes through auxiliary electronically controlled proportional valve (8) again and auxiliary electromagnetic valve (9) connects to auxiliary tank (2), main electronically controlled proportional valve (6)
With auxiliary electronically controlled proportional valve (8) air pressure in main tank (1) and auxiliary tank (2) for the control input respectively, keep main tank (1) and auxiliary tank (2)
Both constant air pressure are poor, the air pressure 0.01～0.30Mpa bigger than the air pressure of main tank (1) of described auxiliary tank (2).
2. the coating unit reducing optical fiber coatings bubble according to claim 1 is it is characterised in that described auxiliary tank (2)
Air pressure 0.1Mpa bigger than the air pressure of main tank (1).
3. the coating unit reducing optical fiber coatings bubble according to claim 1 is it is characterised in that described main tank (1)
Upper returning apparatus have air gauge (10) with auxiliary tank (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410341817.5A CN104071991B (en) | 2014-07-17 | 2014-07-17 | Coating device of reducing bubbles in optical fiber coating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410341817.5A CN104071991B (en) | 2014-07-17 | 2014-07-17 | Coating device of reducing bubbles in optical fiber coating |
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| Publication Number | Publication Date |
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| CN104071991A CN104071991A (en) | 2014-10-01 |
| CN104071991B true CN104071991B (en) | 2017-02-15 |
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| CN201410341817.5A Active CN104071991B (en) | 2014-07-17 | 2014-07-17 | Coating device of reducing bubbles in optical fiber coating |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104649590B (en) * | 2015-03-05 | 2017-03-15 | 重庆国际复合材料有限公司 | A kind of glass fibre antistatic additive coating unit |
| CN107401988B (en) * | 2017-09-08 | 2023-09-15 | 成都中住光纤有限公司 | Optical fiber coating concentricity monitoring system |
| CN109485273A (en) * | 2018-12-14 | 2019-03-19 | 法尔胜泓昇集团有限公司 | A kind of the coating feeding system and method for feeding of the coating of drawing optical fibers resin |
| CN111675496B (en) * | 2020-07-31 | 2024-03-19 | 成都中住光纤有限公司 | Optical fiber coating device |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06144882A (en) * | 1992-11-02 | 1994-05-24 | Showa Electric Wire & Cable Co Ltd | Coating die device for optical fiber |
| CN2850719Y (en) * | 2005-11-10 | 2006-12-27 | 江苏亨通光纤科技有限公司 | Automatic coating feeding device for optical fiber drawing tower |
| CN101954339B (en) * | 2010-10-28 | 2012-10-10 | 中天科技光纤有限公司 | Feeding system for preventing bubble generation during optical fiber coating |
| CN102627412B (en) * | 2012-04-20 | 2015-05-06 | 成都中住光纤有限公司 | Optical fiber coating device capable of reducing bubbles in optical fiber coating |
| CN204039256U (en) * | 2014-07-17 | 2014-12-24 | 成都中住光纤有限公司 | A kind of coating unit reducing optical fiber coatings bubble |
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