CN111675496B - Optical fiber coating device - Google Patents
Optical fiber coating device Download PDFInfo
- Publication number
- CN111675496B CN111675496B CN202010757683.0A CN202010757683A CN111675496B CN 111675496 B CN111675496 B CN 111675496B CN 202010757683 A CN202010757683 A CN 202010757683A CN 111675496 B CN111675496 B CN 111675496B
- Authority
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- China
- Prior art keywords
- coating
- optical fiber
- auxiliary tank
- tank
- liquid level
- 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.)
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- 239000011248 coating agent Substances 0.000 title claims abstract description 87
- 238000000576 coating method Methods 0.000 title claims abstract description 87
- 239000013307 optical fiber Substances 0.000 title claims abstract description 28
- 230000000149 penetrating effect Effects 0.000 claims abstract description 8
- 239000007788 liquid Substances 0.000 claims description 27
- 239000000463 material Substances 0.000 claims description 9
- 239000000835 fiber Substances 0.000 claims description 2
- 239000003973 paint Substances 0.000 abstract description 43
- 230000007547 defect Effects 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 3
- 230000005484 gravity Effects 0.000 abstract description 2
- 238000005452 bending Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 238000007380 fibre production Methods 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
Classifications
-
- 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
- C03C25/12—General methods of coating; Devices therefor
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)
- Surface Treatment Of Glass Fibres Or Filaments (AREA)
Abstract
The invention discloses an optical fiber coating device which comprises a main tank for containing coating and an auxiliary tank for providing the coating for the main tank, wherein the auxiliary tank is connected with the main tank through a conveying pipeline, a coating barrel is arranged in the auxiliary tank, the coating barrel is connected with the conveying pipeline through a vertical pipe, the lower end of the vertical pipe is sealed, and a through hole penetrating through the side wall along the thickness direction is formed in the lower part of the vertical pipe. In the optical fiber coating device, the lower part of the vertical pipe is provided with a through hole penetrating along the thickness direction, and the coating passes through the through hole and enters the vertical pipe. When the paint bucket is replaced, the paint in the vertical pipe has higher pressure than the atmospheric pressure at the through hole due to the gravity effect, so that air cannot enter the vertical pipe from the through hole. So as to avoid the problem of coating defects caused by air mixing in the coating. And because the diameter of the through hole is smaller, the paint cannot flow out of the through hole under the action of surface tension.
Description
Technical Field
The invention relates to the technical field of optical fiber production equipment, in particular to an optical fiber coating device.
Background
In the production of optical fibers, it is necessary to coat the surface of the glass fiber with a protective resin. The existing coating device needs to open the auxiliary tank after the coating is used up and replace the coating barrel. However, the process of changing the paint bucket tends to cause air to be mixed in the transfer line. Once the delivery line is aerated, coating defects on the surface of the optical fiber can result, resulting in scrapping of the optical fiber. Severely affecting the yield of the production.
Therefore, how to avoid the optical fiber from being scrapped due to coating defects caused by air bubbles mixed in the pipe is a technical problem which needs to be solved by the person skilled in the art.
Disclosure of Invention
The invention aims to provide an optical fiber coating device, wherein coating enters a vertical pipe through a via hole at the lower part of the vertical pipe, and air is difficult to enter the vertical pipe due to the smaller diameter of the via hole, so that the problem of coating defects of an optical fiber caused by mixing of the air into the coating is solved.
In order to achieve the above object, the present invention provides an optical fiber coating device, comprising a main tank for containing a coating material and an auxiliary tank for providing the coating material to the main tank, wherein the auxiliary tank is connected with the main tank through a conveying pipeline, a coating material barrel is arranged in the auxiliary tank, the coating material barrel is connected with the conveying pipeline through a vertical pipe, the lower end of the vertical pipe is sealed, and a through hole penetrating through the side wall along the thickness direction is formed in the lower portion of the vertical pipe.
Preferably, the coating device further comprises a coating pipeline for conveying the coating to the die, wherein an inlet section of the coating pipeline is vertically downwards inserted into the main tank, an outlet section of the conveying pipeline is also vertically downwards inserted into the main tank, and an outlet of the output pipeline is a bending section which is bent towards the coating pipeline so that the coating can downwards flow along the outer side wall of the inlet section of the coating pipeline.
Preferably, the lower end of the inlet section of the coating pipe is sealed, and the lower part of the inlet section of the coating pipe is also provided with a through hole penetrating through the side wall in the thickness direction.
Preferably, the conveying pipeline is provided with a first stop valve for controlling the start and stop of paint conveying.
Preferably, the automatic control device further comprises a controller connected with the first stop valve, wherein the auxiliary tank is provided with a first liquid level sensor, and the controller comprises a first actuator connected with the first liquid level sensor and used for closing the first stop valve when the liquid level of the auxiliary tank is lower than a first preset liquid level.
Preferably, the auxiliary tank is further provided with a pressure sensor, and the controller further comprises a second actuator connected with the pressure sensor and used for opening the first stop valve when the pressure of the auxiliary tank is higher than a preset pressure.
Preferably, the coating pipeline is provided with a second stop valve, a second liquid level sensor is arranged in the main tank, and the controller comprises a third actuator which is connected with the second liquid level sensor and used for closing the second stop valve when the liquid level of the main tank is lower than a second preset liquid level.
The invention provides an optical fiber coating device which comprises a main tank for containing coating and an auxiliary tank for providing the coating for the main tank, wherein the auxiliary tank is connected with the main tank through a conveying pipeline, a coating barrel is arranged in the auxiliary tank, the coating barrel is connected with the conveying pipeline through a vertical pipe, the lower end of the vertical pipe is sealed, and a through hole penetrating through the side wall along the thickness direction is formed in the lower part of the vertical pipe.
In the optical fiber coating device, the lower part of the vertical pipe is provided with a through hole penetrating along the thickness direction, and the coating passes through the through hole and enters the vertical pipe. When the paint bucket is replaced, the paint in the vertical pipe has higher pressure than the atmospheric pressure at the through hole due to the gravity effect, so that air cannot enter the vertical pipe from the through hole. So as to avoid the problem of coating defects caused by air mixing in the coating. And because the diameter of the through hole is smaller, the paint cannot flow out of the through hole under the action of surface tension.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present invention, and that other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of an optical fiber coating apparatus according to the present invention;
FIG. 2 is a schematic diagram of the connection between the auxiliary tank and the main tank of FIG. 1;
FIG. 3 is a schematic view of the lower portion of the standpipe of FIG. 2.
Wherein, the reference numerals in fig. 1 are:
the auxiliary tank 1, the paint bucket 2, the first stop valve 3, the conveying pipeline 4, the main tank 5, the coating pipeline 6, the die 7, the optical fiber 8, the vertical pipe 9 and the through hole 91.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The present invention will be further described in detail below with reference to the drawings and detailed description for the purpose of enabling those skilled in the art to better understand the aspects of the present invention.
Referring to fig. 1 to 3, fig. 1 is a schematic structural diagram of an optical fiber coating apparatus according to the present invention; FIG. 2 is a schematic diagram of the connection between the auxiliary tank and the main tank of FIG. 1; FIG. 3 is a schematic view of the lower portion of the standpipe of FIG. 2.
The structure of the optical fiber coating device provided by the invention is shown in figure 1, and the optical fiber coating device comprises an auxiliary tank 1, a main tank 5 and a die 7. Wherein, mould 7 is used for coating protective resin on optic fibre 8 surface, and main jar 5 is used for holding the coating, links to each other through coating pipeline 6 between main jar 5 and the mould 7. The auxiliary tank 1 is used for containing paint, and the auxiliary tank 1 is connected with the main tank 5 through a conveying pipeline 4. In the production process, the auxiliary tank 1 and the main tank 5 are pressurized by gas, and the pressure of the auxiliary tank 1 is higher than that of the main tank 5, so that the paint flows into the main tank 5 under the action of pressure difference. The same paint in the main tank 5 flows into the die 7 under the effect of the pressure difference.
Specifically, the paint is contained by a paint bucket 2, and the paint bucket 2 is arranged in an auxiliary tank 1. The conveying pipeline 4 is connected with a vertical pipe 9, and the vertical pipe 9 is connected with the paint bucket 2. After the auxiliary tank 1 is pressurized, the paint in the paint bucket 2 flows into the main tank 5 along the standpipe 9 and the conveying pipe 4. And when the paint in the paint bucket 2 is emptied, the auxiliary tank 1 is decompressed and the paint bucket 2 is replaced. To avoid the air from entering the standpipe 9 during the replacement of the paint bucket 2, the lower end of the standpipe 9 is sealed, the lower part of the standpipe 9 is provided with a through hole 91 penetrating through the side wall in the thickness direction, and paint enters the standpipe 9 from the through hole 91. The diameter of the via 91 is much smaller than the inside diameter of the standpipe 9 so that the paint will have a greater surface tension near the via 91, preventing air from entering.
Optionally, the delivery conduit 4 is provided with a first shut-off valve 3, the first shut-off valve 3 being closed when the auxiliary tank 1 changes the paint bucket 2. At this point the atmospheric pressure will support the paint in the standpipe 9 and avoid its leakage, while the surface tension of the paint will also prevent air from entering the standpipe 9.
Optionally, the optical fiber coating device further comprises a controller, and the controller is connected with the first stop valve 3. The auxiliary tank 1 is provided with a first liquid level sensor. The controller includes a first actuator coupled to the first level sensor. When the liquid level of the auxiliary tank 1 is lower than a first preset liquid level, the first actuator controls the first stop valve 3 to be closed. The first predetermined level is greater than or equal to the height of the end of the standpipe 9. The controller may be an industrial personal computer, a PLC controller, a single chip microcomputer, or the like, and is not limited herein.
Further, the auxiliary tank 1 is further provided with a pressure sensor, and the controller further comprises a second actuator connected with the pressure sensor. When the pressure of the auxiliary tank 1 is higher than the preset pressure, the second actuator controls the first shut-off valve 3 to open. The preset pressure is generally greater than or equal to the pressure of the main tank 5.
In this embodiment, the first stop valve 3 is disposed in the conveying pipe 4, the end of the standpipe 9 is closed, and the lower part of the standpipe 9 is circumferentially provided with a through hole 91. When the paint bucket 2 is replaced, the first stop valve 3 is closed, so that the upper end of the vertical pipe 9 is closed, and the liquid level in the vertical pipe 9 is maintained by the atmospheric pressure. At the via 91, the surface tension of the paint will prevent air from entering the standpipe 9. Further, the possibility of air mixing into the paint when the paint bucket 2 is replaced is reduced.
Further, once air is mixed into the paint, it needs to be exhausted. Thus, as shown in fig. 2, the inlet section of the coating pipe 6 is inserted vertically downward into the main tank 5, and the outlet section of the delivery pipe 4 is also inserted vertically downward into the main tank 5. The tail end of the outlet of the output pipeline is a bending section which is bent towards the coating pipeline 6. A preset gap is provided between the outlet of the bending section and the outer side wall of the coating pipe 6. After exiting the bend section, the coating material flows down along the outer side wall of the inlet section of the coating duct 6, mixing with the coating material in the main tank. The paint flows along the outer side wall of the coating pipeline 6, so that splash and air mixing at the interface between the paint and the paint in the main tank are avoided, and air bubbles mixed in the paint stay on the liquid surface of the paint in the main tank in the flowing process of the paint, so that gas-liquid separation is realized.
Further, the lower end of the inlet section of the coating pipe 6 is sealed, and the lower part of the inlet section of the coating pipe 6 is also provided with a via hole 91.
In addition, the coating pipe 6 is provided with a second shut-off valve, and a second level sensor is provided in the main tank 5. The controller includes a third actuator coupled to the second level sensor. When the liquid level of the main tank 5 is lower than the second preset liquid level, the third actuator controls the second stop valve to be closed. The first actuator, the second actuator and the third actuator can refer to the comparison circuit in the prior art.
In this embodiment, the end of the conveying pipe 4 is provided with a bending section, and the coating material forms a thinner liquid layer on the outer side wall of the coating pipe 6 after flowing out of the conveying pipe 4 and flows along the outer side wall of the coating pipe 6. Not only avoids the impact of the paint liquid column on the liquid surface of the paint in the main tank, but also causes air to be mixed into the paint in the main tank. And when the paint enters the main tank, air bubbles remain on the liquid surface of the paint in the main tank, so that gas-liquid separation is realized.
It should be noted that in this specification relational terms such as first and second are used solely to distinguish one entity from another entity without necessarily requiring or implying any actual such relationship or order between such entities.
The optical fiber coating apparatus provided by the present invention is described in detail above. The principles and embodiments of the present invention have been described herein with reference to specific examples, the description of which is intended only to facilitate an understanding of the method of the present invention and its core ideas. It should be noted that it will be apparent to those skilled in the art that various modifications and adaptations of the invention can be made without departing from the principles of the invention and these modifications and adaptations are intended to be within the scope of the invention as defined in the following claims.
Claims (7)
1. The utility model provides an optic fibre coating device, its characterized in that, include main jar (5) and be used for to hold the coating main jar (5) provide the auxiliary tank (1) of coating, the pressure of auxiliary tank (1) is higher than the pressure of main jar (5), auxiliary tank (1) with main jar (5) link to each other through pipeline (4), be equipped with in auxiliary tank (1) and scribble storage bucket (2), scribble storage bucket (2) with pipeline (4) are connected through standpipe (9), the lower extreme of standpipe (9) is sealed, the lower part of standpipe (9) has through-hole (91) of running through the lateral wall along the thickness direction.
2. The optical fiber coating device according to claim 1, further comprising a coating pipe (6) for conveying coating material to a die (7), an inlet section of the coating pipe (6) being inserted vertically downward into the main tank (5), an outlet section of the conveying pipe (4) being also inserted vertically downward into the main tank (5), an outlet of the conveying pipe (4) being a bent section bent toward the coating pipe (6) so that coating material can flow downward along an outer side wall of the inlet section of the coating pipe (6).
3. Optical fiber coating device according to claim 2, characterized in that the lower end of the inlet section of the coating duct (6) is sealed, the lower part of the inlet section of the coating duct (6) also having a via (91) penetrating the side wall in the thickness direction.
4. An optical fiber coating device according to any one of claims 2 or 3, characterized in that the delivery conduit (4) is provided with a first shut-off valve (3) for controlling the start and stop of the coating delivery.
5. The optical fiber coating device according to claim 4, further comprising a controller connected to the first shut-off valve (3), the auxiliary tank (1) being provided with a first liquid level sensor, the controller comprising a first actuator connected to the first liquid level sensor for closing the first shut-off valve (3) when the liquid level of the auxiliary tank (1) is below a first preset liquid level.
6. The optical fiber coating device according to claim 5, wherein the auxiliary tank (1) is further provided with a pressure sensor, and the controller further comprises a second actuator connected to the pressure sensor for opening the first stop valve (3) when the pressure of the auxiliary tank (1) is higher than a preset pressure.
7. Optical fiber coating device according to claim 5, characterized in that the coating conduit (6) is provided with a second shut-off valve, a second level sensor is provided in the main tank (5), and the controller comprises a third actuator connected to the second level sensor for closing the second shut-off valve when the liquid level of the main tank (5) is below a second preset liquid level.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010757683.0A CN111675496B (en) | 2020-07-31 | 2020-07-31 | Optical fiber coating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010757683.0A CN111675496B (en) | 2020-07-31 | 2020-07-31 | Optical fiber coating device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111675496A CN111675496A (en) | 2020-09-18 |
| CN111675496B true CN111675496B (en) | 2024-03-19 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010757683.0A Active CN111675496B (en) | 2020-07-31 | 2020-07-31 | Optical fiber coating device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111675496B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06121960A (en) * | 1992-10-09 | 1994-05-06 | Fujikura Ltd | Resin supply device |
| CN104071991A (en) * | 2014-07-17 | 2014-10-01 | 成都中住光纤有限公司 | Coating device of reducing bubbles in optical fiber coating |
| CN213113095U (en) * | 2020-07-31 | 2021-05-04 | 成都中住光纤有限公司 | Optical fiber coating device |
-
2020
- 2020-07-31 CN CN202010757683.0A patent/CN111675496B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06121960A (en) * | 1992-10-09 | 1994-05-06 | Fujikura Ltd | Resin supply device |
| CN104071991A (en) * | 2014-07-17 | 2014-10-01 | 成都中住光纤有限公司 | Coating device of reducing bubbles in optical fiber coating |
| CN213113095U (en) * | 2020-07-31 | 2021-05-04 | 成都中住光纤有限公司 | Optical fiber coating device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111675496A (en) | 2020-09-18 |
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