CN116237196A - Polyimide recoating device for long optical fiber section - Google Patents
Polyimide recoating device for long optical fiber section Download PDFInfo
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- CN116237196A CN116237196A CN202310190829.1A CN202310190829A CN116237196A CN 116237196 A CN116237196 A CN 116237196A CN 202310190829 A CN202310190829 A CN 202310190829A CN 116237196 A CN116237196 A CN 116237196A
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- 239000013307 optical fiber Substances 0.000 title claims abstract description 181
- 229920001721 polyimide Polymers 0.000 title claims abstract description 79
- 239000004642 Polyimide Substances 0.000 title claims abstract description 42
- 238000000576 coating method Methods 0.000 claims abstract description 150
- 239000011248 coating agent Substances 0.000 claims abstract description 147
- 230000007246 mechanism Effects 0.000 claims abstract description 75
- 239000009719 polyimide resin Substances 0.000 claims abstract description 37
- 239000007788 liquid Substances 0.000 claims abstract description 36
- 239000000835 fiber Substances 0.000 claims description 11
- 238000003825 pressing Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000001723 curing Methods 0.000 description 8
- 239000011247 coating layer Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 239000011347 resin Substances 0.000 description 5
- 229920005989 resin Polymers 0.000 description 5
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- 238000010586 diagram Methods 0.000 description 2
- 238000012681 fiber drawing Methods 0.000 description 2
- 238000013007 heat curing Methods 0.000 description 2
- 238000000016 photochemical curing Methods 0.000 description 2
- 239000004925 Acrylic resin Substances 0.000 description 1
- 229920000178 Acrylic resin Polymers 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- -1 carrier Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
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- 238000010276 construction Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
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- 239000012535 impurity Substances 0.000 description 1
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- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
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- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000001029 thermal curing Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C5/00—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work
- B05C5/02—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work
- B05C5/0241—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work for applying liquid or other fluent material to elongated work, e.g. wires, cables, tubes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C13/00—Means for manipulating or holding work, e.g. for separate articles
- B05C13/02—Means for manipulating or holding work, e.g. for separate articles for particular articles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C9/00—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important
- B05C9/08—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important for applying liquid or other fluent material and performing an auxiliary operation
- B05C9/14—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important for applying liquid or other fluent material and performing an auxiliary operation the auxiliary operation involving heating or cooling
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- Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)
Abstract
The invention discloses a polyimide recoating device for a long optical fiber section, which belongs to the field of optical fiber manufacturing and comprises the following components: an optical fiber clamping mechanism and a coating mechanism; the optical fiber clamping mechanisms are respectively provided with two optical fiber clamps, and can clamp the optical fiber to be coated and enable the optical fiber to be coated to be in a straight line state; the coating mechanism is provided with a coating tool capable of outputting polyimide resin liquid drops, and the coating tool can be coated on the periphery of the optical fiber to be coated; the coating tool of the coating mechanism and the optical fiber to be coated clamped by the optical fiber clamping mechanism can move linearly relatively, so that polyimide resin liquid drops output by the coating tool of the coating mechanism are coated on the surface of the optical fiber to be coated. The device can rapidly and uniformly coat the surface of a long optical fiber section, improves the coating efficiency and reduces the complexity of recoating operation.
Description
Technical Field
The invention relates to the field of optical fiber processing, in particular to a polyimide recoating device for a long optical fiber section.
Background
Polyimide material is an organic material widely used in the fields of optical fiber manufacturing, semiconductor industry and the like. It has the advantages of high temperature resistance of 200 ℃ or above, low air release rate in vacuum environment, stable chemical property and the like. By curing the polyimide resin on the device surface, a polyimide coating layer can be formed on the device surface. In order to ensure uniformity and mechanical properties of the cured polyimide coating, the manner and speed of resin coating and temperature control during curing are important, and specific equipment and processes are required for the properties of the surface.
The coating layer of the optical fiber is crucial for enhancing the mechanical properties of the optical fiber, polyimide has excellent properties, and the coated optical fiber can be applied in extreme environments such as high temperature, ultrahigh vacuum and the like. The polyimide optical fiber at present needs to integrate a coating module in an optical fiber drawing production line, and most of coating layers of optical fibers on the market are acrylic resin, so that the coating layers are difficult to customize. Therefore, before an experimenter puts an optical fiber of a specific specification into use in an extreme environment, the original coating layer needs to be removed, and then recoating of the polyimide layer is performed.
The existing polyimide optical fiber coating machine needs to put the optical fiber into a specific mold, inject resin and then perform photo-curing or thermal curing. The length of fiber that can be coated is substantially only a few centimeters due to die handling and liquid injection considerations.
The polyimide coating of the long length of optical fiber can be performed by a manual coating method, specifically, the optical fiber is scratched from polyimide resin drops, so that the surface of the optical fiber is adhered with a polyimide resin layer, and then the optical fiber is cured. This method requires not only a complicated operation by hand, but also difficulty in controlling the coating speed and the resin temperature, and thus it is difficult to make the formed coating layer sufficiently uniform, and the mechanical properties of the optical fiber are also difficult to secure.
In view of this, the present invention has been made.
Disclosure of Invention
The invention aims to provide a polyimide recoating device for a long optical fiber section, which can recoat polyimide resin on an optical fiber with the length of tens of centimeters or more, and prepare a section of uniform polyimide coating layer on the surface of the optical fiber, so as to solve the technical problems in the prior art.
The invention aims at realizing the following technical scheme:
a polyimide recoating apparatus for a long optical fiber segment, comprising:
an optical fiber clamping mechanism and a coating mechanism; wherein,,
the optical fiber clamping mechanisms are respectively provided with two optical fiber clamps, and can clamp the optical fiber to be coated and enable the optical fiber to be coated to be in a straight line state;
the coating mechanism is provided with a coating tool capable of outputting polyimide resin liquid drops, and the coating tool can be coated on the periphery of the optical fiber to be coated;
the coating tool of the coating mechanism and the optical fiber to be coated clamped by the optical fiber clamping mechanism can move linearly relatively, so that polyimide resin liquid drops output by the coating tool of the coating mechanism are coated on the surface of the optical fiber to be coated.
Compared with the prior art, the polyimide recoating device for the long optical fiber section has the beneficial effects that:
through setting up coating mechanism at optic fibre fixture side, can wrap through coating mechanism and export the polyimide resin liquid drop at the coating instrument of waiting to coat optic fibre periphery, because can carry out relative rectilinear movement between the optic fibre that waits to coat of coating instrument and optic fibre fixture centre gripping, can realize waiting to coat the optic fibre surface and carry out quick, even coating, promoted polyimide's coating efficiency and coating quality, compare manual coating operation and also reduced the complexity of coating. The device is suitable for recoating of almost any commercial optical fiber to enhance its resistance to various extreme environments. At the same time, various liquid-phase curing type coating materials including polyimide are also supported for coating. The device can be used for recoating bare optical fiber sections of tens of centimeters or more, the coating length is limited in principle only by the dimensions of the fixing clamp and the electric sliding table, and segmented, multi-layer and multi-time coating is supported for longer optical fibers. The device speed adjustable electronic slip table and the coating instrument that has integrated temperature control system can let polyimide coating thickness even, improves optic fibre mechanical properties. The device has simple structure and low cost, and besides the simple mechanical processing of the coating tool, all other parts have commercial products meeting the requirements.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic diagram of a polyimide recoating apparatus for a long optical fiber segment according to an embodiment of the present invention.
Fig. 2 is a schematic diagram of a coating tool of a polyimide recoating apparatus for long optical fiber segments according to an embodiment of the present invention.
The component names corresponding to the marks in the figures are as follows: 1-a coating tool; 2-an electric sliding table; 3-an optical fiber to be coated; 4-an optical fiber clamping mechanism; 3-an optical fiber to be coated; 4-coating polyimide resin droplets in the tool recess; a 5-resistance heater; 6: a temperature sensor.
Detailed Description
The technical scheme in the embodiment of the invention is clearly and completely described below in combination with the specific content of the invention; it will be apparent that the described embodiments are only some embodiments of the invention, but not all embodiments, which do not constitute limitations of the invention. 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 fall within the scope of the invention.
The terms that may be used herein will first be described as follows:
the term "and/or" is intended to mean that either or both may be implemented, e.g., X and/or Y are intended to include both the cases of "X" or "Y" and the cases of "X and Y".
The terms "comprises," "comprising," "includes," "including," "has," "having" or other similar referents are to be construed to cover a non-exclusive inclusion. For example: including a particular feature (e.g., a starting material, component, ingredient, carrier, formulation, material, dimension, part, means, mechanism, apparatus, step, procedure, method, reaction condition, processing condition, parameter, algorithm, signal, data, product or article of manufacture, etc.), should be construed as including not only a particular feature but also other features known in the art that are not explicitly recited.
The term "consisting of … …" is meant to exclude any technical feature element not explicitly listed. If such term is used in a claim, the term will cause the claim to be closed, such that it does not include technical features other than those specifically listed, except for conventional impurities associated therewith. If the term is intended to appear in only a clause of a claim, it is intended to limit only the elements explicitly recited in that clause, and the elements recited in other clauses are not excluded from the overall claim.
Unless specifically stated or limited otherwise, the terms "mounted," "connected," "secured," and the like should be construed broadly to include, for example: the connecting device can be fixedly connected, detachably connected or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms herein above will be understood by those of ordinary skill in the art as the case may be.
When concentrations, temperatures, pressures, dimensions, or other parameters are expressed as a range of values, the range is to be understood as specifically disclosing all ranges formed from any pair of upper and lower values within the range of values, regardless of whether ranges are explicitly recited; for example, if a numerical range of "2 to 8" is recited, that numerical range should be interpreted to include the ranges of "2 to 7", "2 to 6", "5 to 7", "3 to 4 and 6 to 7", "3 to 5 and 7", "2 and 5 to 7", and the like. Unless otherwise indicated, numerical ranges recited herein include both their endpoints and all integers and fractions within the numerical range.
The terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," etc. refer to an orientation or positional relationship based on that shown in the drawings, merely for ease of description and to simplify the description, and do not explicitly or implicitly indicate that the apparatus or element in question must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present disclosure.
The polyimide recoating apparatus for long optical fiber segments provided by the present invention will be described in detail. What is not described in detail in the embodiments of the present invention belongs to the prior art known to those skilled in the art. The specific conditions are not noted in the examples of the present invention and are carried out according to the conditions conventional in the art or suggested by the manufacturer. The reagents or apparatus used in the examples of the present invention were conventional products commercially available without the manufacturer's knowledge.
As shown in fig. 1, an embodiment of the present invention provides a polyimide recoating apparatus for a long optical fiber segment, comprising:
a fiber clamping mechanism 1 and a coating mechanism 2; wherein,,
the optical fiber clamping mechanisms 1 are respectively provided with two optical fiber clamps 11 which can clamp the optical fiber to be coated and enable the optical fiber to be coated to be in a straight line state;
the coating mechanism 2 is arranged on the side face of the optical fiber 3 to be coated, which is clamped by the optical fiber clamping mechanism 1, the coating mechanism 2 is provided with a coating tool capable of outputting polyimide resin liquid drops, and the coating tool can be coated on the periphery of the optical fiber to be coated;
the coating tool of the coating mechanism 2 and the optical fiber 3 to be coated clamped by the optical fiber clamping mechanism 1 can move linearly relatively, so that polyimide resin liquid drops output by the coating tool of the coating mechanism are coated on the surface of the optical fiber to be coated.
In a preferred embodiment, in the above device, two ends of the optical fiber clamping mechanism 2 are respectively fixedly provided with an optical fiber clamp 11, which can fixedly clamp the optical fiber to be coated to make the optical fiber to be coated in a straight line state;
the coating mechanism 2 consists of an electric translational sliding table and a coating tool; wherein,,
the coating tool is arranged on the electric translational sliding table, and can be driven by the electric translational sliding table to linearly reciprocate along the optical fiber to be coated fixedly clamped by the optical fiber clamping mechanism, and polyimide resin liquid drops output by the coating tool are coated on the surface of the optical fiber to be coated.
The above scheme is a mode of fixing the optical fiber, namely, the optical fiber is not moved, and a coating tool of a coating mechanism moves along the optical fiber to realize coating of the optical fiber.
Referring to fig. 2, preferably, in the above apparatus, the coating means includes:
the coating nozzle 21 is arranged on the side surface of the sliding table 22 of the electric translational sliding table in a protruding state, a groove capable of coating the periphery of the optical fiber to be coated is arranged in the middle of the coating nozzle, and a polyimide resin liquid drop hole is arranged in the center of the upper wall of the groove;
the back of the coating nozzle is provided with a through hole communicated with the polyimide resin liquid drop hole;
and the preheating device 5 is connected with the through hole on the back surface of the coating nozzle.
Preferably, in the above device, the preheating device 5 is composed of an electric heater 51 and a temperature sensor 52, wherein a polyimide resin droplet outlet of the electric heater is communicated with a through hole on the back of the coating nozzle, and the temperature sensor is arranged on the coating nozzle;
or the preheating device adopts a tubular baking furnace, and a polyimide resin liquid drop outlet of the tubular baking furnace is communicated with a through hole on the back surface of the coating nozzle;
alternatively, the preheating device adopts a light source for light curing and is arranged on the coating tool.
Preferably, in the preheating device, the electric heater is a resistance heater; the temperature sensor adopts a thermistor.
Preferably, in the coating mechanism, the electric translational sliding table 2 adopts: any one of an electric screw rod sliding table and an electric translation table.
Preferably, the electric screw rod sliding table consists of a screw rod 23, a motor 24 and a sliding table 22, wherein the motor is arranged at one end of the screw rod and can drive the screw rod to rotate forwards or reversely;
the sliding table is provided with an internal thread matched with the screw rod and is movably arranged on the screw rod through thread matching, and can linearly reciprocate along the screw rod under the action of the rotating screw rod;
and the coating tool is arranged on the sliding table.
Preferably, in the above device, the optical fiber clamping mechanism includes:
an elongated support and two fiber clamps, wherein,
the two optical fiber clamping mechanisms are fixedly arranged at two ends of the strip-shaped bracket respectively;
the two optical fiber clamps have the same structure and are both formed by arranging magnetic pressing plates on the V-shaped grooves.
It can be appreciated that, in order to maintain the stability of the relative positions of the coating mechanism and the optical fiber clamping mechanism, the fixing member of the electric translational sliding table of the coating mechanism can be disposed on the elongated support of the optical fiber clamping mechanism, so that the stability of the coating tool during movement can be ensured, and the stability of the distance between the coating tool and the optical fiber to be coated can also be ensured.
In another preferred embodiment, in the above device, one end of the optical fiber clamping mechanism is fixedly provided with an optical fiber clamp, the optical fiber clamping mechanism is provided with an electric translational sliding table, and the other optical fiber clamp is arranged on the electric translational sliding table and can clamp one end of the optical fiber to be coated for linear movement under the drive of the electric translational sliding table;
the coating tool of the coating mechanism is fixedly arranged on the side face of the optical fiber to be coated, which is clamped by the optical fiber clamping mechanism, and can be coated on the surface of the optical fiber to be coated by coating the output polyimide resin liquid drops on the periphery of the optical fiber to be coated, which moves linearly.
In the above-mentioned scheme, the coating tool of the coating mechanism is fixed, and one end of the optical fiber is clamped by the clamp at one end to linearly move, so that the moving optical fiber can be coated by polyimide resin in the fixed coating tool.
Preferably, in the above device, the electric translational sliding table adopts: any one of an electric screw rod sliding table and an electric translation table; the construction of the electric screw rod sliding table can be the same as that of the scheme, and is not repeated here;
the coating tool includes: the coating nozzle is arranged on the side surface of the electric translational sliding table in a protruding state, a groove capable of being coated on the periphery of the optical fiber to be coated is arranged at the middle part of the coating nozzle, and a polyimide resin liquid dripping hole is formed in the center of the upper wall of the groove;
the back of the coating nozzle is provided with a through hole communicated with the polyimide resin liquid drop hole;
and the preheating device is connected with the through hole on the back surface of the coating nozzle.
Preferably, the preheating device is identical to the solution of the above embodiment and is not repeated here.
In summary, according to the polyimide recoating device provided by the embodiment of the invention, the coating mechanism is arranged on the side surface of the optical fiber clamping mechanism, polyimide resin liquid drops are output by the coating tool which can be coated on the periphery of the optical fiber to be coated through the coating mechanism, and as the coating tool and the optical fiber to be coated clamped by the optical fiber clamping mechanism can move linearly relatively, the surface of the optical fiber to be coated can be coated rapidly and uniformly, the coating efficiency and the coating quality of polyimide are improved, the coating complexity is reduced compared with the manual coating operation, and a good solution is provided for recoating the optical fiber.
In order to more clearly demonstrate the technical scheme and the technical effects provided by the invention, the polyimide recoating device for the long optical fiber section provided by the embodiment of the invention is described in detail below by using specific embodiments.
Example 1
The present embodiment provides a polyimide recoating apparatus for a long optical fiber segment, the overall structure of which is shown in fig. 1, comprising:
an optical fiber clamping mechanism and a coating mechanism; the coating mechanism consists of an electric translational sliding table and a coating tool;
two optical fiber clamps are fixedly arranged at two ends of the optical fiber clamping mechanism, the two optical fiber clamps are identical in structure and are composed of a V-shaped groove and a magnetic pressing plate, and the two optical fiber clamps which are fixedly arranged can clamp and fix two ends of an optical fiber to be coated, so that the optical fiber is in a straight line state, namely, the bare optical fiber to be coated is straightened and suspended in the center of the clamp.
After the bare optical fiber is immersed into polyimide resin liquid drops on a coating tool of a coating mechanism, the electric straight moving sliding table can enable the liquid drops to slowly move from one end of the optical fiber to be coated to the other end at a constant speed, and coating uniformity is guaranteed.
The coating tool is constructed as shown in fig. 2, the projecting part of the coating tool is a coating nozzle, the coating nozzle is a groove for bearing polyimide resin liquid drops, the liquid drops can be dripped through a small hole in the center of the upper wall of the groove by using a dropper, the liquid drops are attached between the two walls under the action of attaching force, and when the optical fiber is in the center of the groove, the optical fiber can be immersed into the liquid drops and pass through the liquid drops when the coating tool translates along the optical fiber.
Preferably, the electric translational sliding table of the embodiment adopts an electric screw rod sliding table, and the coating tool is fixedly arranged on the sliding table and can move along with the sliding table along with the screw rod driven by the motor.
The back of the coating tool is provided with a through hole for installing a resistance heater and a thermistor so as to control the temperature of polyimide liquid drops. This is because the polyimide resin temperature needs to be controlled to be around 100 ℃ during the optical fiber coating process, which is called a pre-curing process. Polyimide resin on the optical fiber can not be condensed into liquid drops at the temperature, so that the resin can be uniformly coated on the optical fiber, and the mechanical strength of the coated optical fiber can be improved.
After the polyimide resin is coated, the optical fiber section and the optical fiber clamping mechanism can be put into a drying oven to be heated and cured, so that the whole coating process is completed.
Example 2
The embodiment provides a polyimide recoating device for a long optical fiber section, which is different from the form of fixing an optical fiber and moving a coating tool in embodiment 1, wherein a coating mechanism in the embodiment is fixed, one end of the optical fiber clamped by an optical fiber clamping mechanism is moved, namely, the coating tool of the coating mechanism is fixedly arranged, an electric translational sliding table is arranged on the optical fiber clamping mechanism, an optical fiber clamp is arranged on the electric translational sliding table, one end of the optical fiber can be clamped, and the optical fiber is driven to linearly move, so that the fixation of the coating tool and liquid drops is realized, and the optical fiber to be coated is translated. Coating of a length of optical fiber can be accomplished as long as the fiber is capable of being immersed in and passed through the droplet. The way of moving the coating tool and the optical fiber is not limited to the electric screw slide, but may be another kind of electric translation stage, an optical fiber drawing device, or the like.
Example 3
The present embodiment provides a polyimide recoating apparatus for a long optical fiber segment, which is different from embodiment 1 in that the curing manner of the optical fiber is not limited to the method of placing the optical fiber holding mechanism and the optical fiber together in a dry box for heat curing, but the optical fiber holding mechanism of the optical fiber may also be integrated with a heating device for pre-curing or heat curing, such as a tube oven or the like, or a light source for photo-curing, depending on the curing requirements of polyimide coating resin or other liquid coating material for a specific application.
It can be appreciated that the recoating apparatus of this embodiment can be used not only for polyimide coating of optical fibers, but also for coating surfaces of other devices, such as metal wires, to meet the requirements of surface insulation, enhanced tolerance in extreme environments, and the like.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions easily contemplated by those skilled in the art within the scope of the present invention should be included in the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims. The information disclosed in the background section herein is only for enhancement of understanding of the general background of the invention and is not to be taken as an admission or any form of suggestion that this information forms the prior art already known to those of ordinary skill in the art.
Claims (10)
1. A polyimide recoating apparatus for a long optical fiber segment, comprising:
an optical fiber clamping mechanism and a coating mechanism; wherein,,
the optical fiber clamping mechanisms are respectively provided with two optical fiber clamps, and can clamp the optical fiber to be coated and enable the optical fiber to be coated to be in a straight line state;
the coating mechanism is provided with a coating tool capable of outputting polyimide resin liquid drops, and the coating tool can be coated on the periphery of the optical fiber to be coated;
the coating tool of the coating mechanism and the optical fiber to be coated clamped by the optical fiber clamping mechanism can move linearly relatively, so that polyimide resin liquid drops output by the coating tool of the coating mechanism are coated on the surface of the optical fiber to be coated.
2. The polyimide recoating apparatus for long optical fiber segments according to claim 1, wherein an optical fiber clamp is fixedly provided at each of both ends of the optical fiber clamping mechanism, and is capable of fixedly clamping the optical fiber to be coated so that the optical fiber to be coated is in a straight line state;
the coating mechanism consists of an electric translational sliding table and a coating tool; wherein,,
the coating tool is arranged on the electric translational sliding table, and can be driven by the electric translational sliding table to linearly reciprocate along the optical fiber to be coated fixedly clamped by the optical fiber clamping mechanism, and polyimide resin liquid drops output by the coating tool are coated on the surface of the optical fiber to be coated.
3. The polyimide recoating apparatus for long optical fiber segments according to claim 2, wherein the coating means comprises:
the coating nozzle is arranged on the side surface of the electric translational sliding table in a protruding state, a groove capable of being coated on the periphery of the optical fiber to be coated is arranged at the middle part of the coating nozzle, and a polyimide resin liquid dripping hole is formed in the center of the upper wall of the groove;
the back of the coating nozzle is provided with a through hole communicated with the polyimide resin liquid drop hole;
and the preheating device is connected with the through hole on the back surface of the coating nozzle.
4. The polyimide recoating apparatus for long optical fiber segments according to claim 3, wherein the preheating means is composed of an electric heater, whose polyimide resin droplet outlet communicates with the through hole of the back surface of the coating nozzle, and a temperature sensor provided on the coating nozzle;
or the preheating device adopts a tubular baking furnace, and a polyimide resin liquid drop outlet of the tubular baking furnace is communicated with a through hole on the back surface of the coating nozzle;
alternatively, the preheating device adopts a light curing light source and is arranged on the coating tool.
5. The polyimide recoating apparatus for long optical fiber segments according to claim 4, wherein the electric heater employs a resistive heater;
the temperature sensor adopts a thermistor.
6. The polyimide recoating apparatus for long optical fiber segments according to claim 2, wherein the motorized translation stage employs: any one of an electric screw rod sliding table and an electric translation table.
7. The polyimide recoating apparatus for long optical fiber segments according to claim 6, wherein the electric screw sliding table comprises a screw, a motor and a sliding table, the motor is arranged at one end of the screw and can drive the screw to rotate in a forward direction or a reverse direction;
the sliding table is provided with an internal thread matched with the screw rod and is movably arranged on the screw rod through thread matching, and can linearly reciprocate along the screw rod under the action of the rotating screw rod;
and the coating tool is arranged on the sliding table.
8. The polyimide recoating apparatus for long optical fiber segments according to any one of claims 2 to 7, wherein the optical fiber clamping mechanism comprises:
an elongated support and two fiber clamps, wherein,
the two optical fiber clamping mechanisms are fixedly arranged at two ends of the strip-shaped bracket respectively;
the two optical fiber clamps have the same structure and are both formed by arranging magnetic pressing plates on the V-shaped grooves.
9. The polyimide recoating apparatus for long optical fiber segments according to claim 1, wherein one end of the optical fiber clamping mechanism is fixedly provided with an optical fiber clamp, the optical fiber clamping mechanism is provided with an electric translational sliding table, and the other optical fiber clamp is arranged on the electric translational sliding table and can clamp one end of the optical fiber to be coated for linear movement under the drive of the electric translational sliding table;
the coating tool of the coating mechanism is fixedly arranged on the side face of the optical fiber to be coated, which is clamped by the optical fiber clamping mechanism, and can be coated on the surface of the optical fiber to be coated by coating the output polyimide resin liquid drops on the periphery of the optical fiber to be coated, which moves linearly.
10. The polyimide recoating apparatus for long optical fiber segments according to claim 9, wherein the motorized translation stage employs: any one of an electric screw rod sliding table and an electric translation table;
the coating tool includes: the coating nozzle is arranged on the side surface of the electric translational sliding table in a protruding state, a groove capable of being coated on the periphery of the optical fiber to be coated is arranged at the middle part of the coating nozzle, and a polyimide resin liquid dripping hole is formed in the center of the upper wall of the groove;
the back of the coating nozzle is provided with a through hole communicated with the polyimide resin liquid drop hole;
and the preheating device is connected with the through hole on the back surface of the coating nozzle.
Priority Applications (1)
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| CN116689238A (en) * | 2023-06-26 | 2023-09-05 | 安徽相和通信有限公司 | Extrusion type optical fiber coating system and coating method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116689238A (en) * | 2023-06-26 | 2023-09-05 | 安徽相和通信有限公司 | Extrusion type optical fiber coating system and coating method thereof |
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