CN209141389U - Gradient polymer optical fiber squeezes out head - Google Patents

Abstract

The utility model discloses a kind of gradient polymer optical fibers to squeeze out head, it applies in the field of telecommunication optical fiber preparation, it solves existing equipment to be difficult to meet the GI-POF of performance requirement, its key points of the technical solution are that including head body, feed space, kneading chamber and extruder chamber are from top to bottom disposed in head body, mixing chamber is rotatably connected at least one for uniformly mixing the mixing elements of a variety of optical fiber material；It is rotatably connected in extruder chamber for the extrusion to discharge port output homogeneous material, mixing elements are sheared a variety of optical fiber material, are squeezed, so that a variety of optical fiber material mixing are more uniform, optical fiber material after mixing flows into extruder chamber again, uniformly mixed optical fiber material is exported to discharge port direction using extrusion, be conducive to the uniform mixing of a variety of optical fiber materials, so that realization prepares light loss parameter in 200dB/km or less and has the GI optical fiber of continuous refraction index distribution.

Description

Gradient polymer optical fiber squeezes out head

Technical field

The utility model relates to optical fiber processing, in particular to a kind of gradient polymer optical fiber squeezes out head.

Background technique

In recent years, with the fast development of modern science and technology, optical fiber is in fields such as communication, electronics and electric power It increasingly extends, becomes coming novel foundation material, the optical fiber technology of accompanying this is convenient to win people's also with novelty Favor.

It is reported that U.S. Larry peace company successfully completes transmission of electricity function with optical fiber already, in power domain Open up a new approach.They utilize semiconductor laser diode in transmitting terminal, and electric energy is changed into laser and is passed in a fiber It send, in receiving end, they use solar battery as receiving end device, and this device uses 300 microns of thick GaAs absolutely Edge substrate is covered with 20 microns of thick solar batteries above；It is divided into these regions of 6 independent regions by gold-plated sky Air bridge is together in series, and when the laser irradiation transmitted by optical fiber is to solar battery, luminous energy is immediately turned into electric energy.Is produced from each region Raw voltage is precisely 1 volt, and 6 region series get up just to have 6 volts of voltages, and the control circuit that can supply most of sensors completely makes With.

France specializes in the wave root laboratory of computer, electronics industry, signal processing and image technique, utilizes the orphan of light Marble and short chong channel, can realize undistorted transmission in optical fiber.This technology can solve the problems, such as dispersion and nonlinear effect, be not necessarily to Along optical cable, multiple regenerating units are set.When work only an amplifier soliton need to be placed just in every 100 kilometers or so of place It can mutually pass through, not interfere with each other.

Australian Bao Lin company is developed into a kind of optical fiber scale in recent years, can using an optical fiber and a laser To weigh to automobile.A kind of very special optical fiber of resistance characteristic is utilized in this optical fiber scale, when it is under pressure or tension When, slight deformation can occur for optical fiber, and laser feature is caused to change, and at this moment detector can immediately convert this variation to Electric signal, to be shown on instrument.

Optical fiber mainly includes step-refraction index profile optical fiber (abbreviation SI type polymer optical fiber) and gradient type refraction Rate profile optical fiber (abbreviation GI type polymer optical fiber).Since the former is there are biggish intermode dispersion, the transmission broadband of optical fiber compared with Narrow, only about 5MHz km, is typically only capable to meet the requirement for being greater than low capacity signal transmission in 100m.Such as the general view of transmission Frequency signal needs the broadband 6MHz km, transmission high-definition picture that the broadband 10MHz km, transmitting digitized vision signal is needed then to need It will at least broadband 40MHz km.The broadband of SI type polymer optical fiber can no longer meet above-mentioned needs, this defect seriously hinders Large-scale application of the polymer optical fiber in communication transfer field.

There are mainly two types of methods by production GI-POF in the prior art, and one is the two-step method systems using wire drawing after first stick processed It makes, manufactures the GI-POF preform that an outer diameter is about 22mm with interfacial-gel polymerization；The prefabricated rods are put into again In one fiber drawing furnace, prefabricated rods are heated to 220 ~ 230 DEG C to pull into core diameter to be about 500 μm, outer diameter is about 750 μm of GI- POF controls the index distribution of GI-POF by changing the type and concentration of dopant, polymerization initiator, chain-transferring agent；Separately One is GI-POF is produced using direct coextruding method, extrusion core and clad material melt, right latter two are distinguished with two extruders Material melt is integrated to form a concentric melt flow at head, and dopant material is located at the center of melt, in extruder After head, these melt materials flow through one long heating diffuser, and it is molten that the small molecule dopant at melt center is diffused into clad material In body, by control temperature, residence time and core/clad material relative velocity, to control the index distribution of GI-POF.

Currently, the Chinese patent that Authorization Notice No. is CN205997303U in existing patent discloses a kind of optical cable and is extruded into Type Vacuuming structure includes extrusion head, and the extruding end for squeezing out head is equipped with die cap and mold core, is stayed between die cap and mold core There are plastic passages, the arrival end for squeezing out head is assembled with needle tubing, and one end of needle tubing extends insertion mold core, and the inner hole of needle tubing is for optical fiber Pass through simultaneously with ointment, moulding plastics squeeze out from plastic passages and wrap up optical fiber and ointment, that is, casing is made, and squeeze out entering for head Mouth end is equipped with vacuum part, and the respective end of needle tubing is exposed outside vacuum part, which has vacuum chamber and vacuumize hole, vacuum part group Its vacuum chamber connects the gap between needle tubing and mold core after dress, forms vaccum supply system, is aspirated with suction force appropriate, will The air that the extruding end of extrusion head is brought into is discharged from the gap of needle tubing and mold core, reduces the bubble in production rear sleeve, protects The outer diameter for demonstrate,proving casing is more stable, and structure is simple, easy to use, Improving The Quality of Products, saves raw material.

Currently, the domestic illumination use that can only produce high light loss, ad decoration be with keeping out plastic optical fiber, and light loss parameter exists 200dB/km is hereinafter, and the GI optical fiber that has the distribution of continuous refraction index is even more the blank in the field.

Utility model content

The purpose of the utility model is to provide a kind of gradient polymer optical fibers to squeeze out head, can produce light loss parameter and exist 200dB/km or less and the GI optical fiber for having continuous refraction index distribution, compensate for the blank of domestic fields.

The above-mentioned technical purpose of the utility model has the technical scheme that

A kind of gradient polymer optical fiber squeezes out head, including head body, in the head body from top to bottom successively It is provided with feed space, mixing chamber and extruder chamber, the head body is equipped with several connection multiple groups and squeezes out unit to feed space The feed inlet of interior feed, the discharge port being connected with extruder chamber and the mouth mold for being connected to discharge outlet；The mixing chamber turns It is dynamic to be connected at least one for uniformly mixing the mixing elements of a variety of optical fiber material；Be rotatably connected in the extruder chamber for The extrusion of discharge port output homogeneous material.

By using above-mentioned technical proposal, unit is squeezed out by a variety of optical fiber material simultaneously injecting feeding room using multiple groups, it is more Kind optical fiber material flows into mixing chamber in turn, is sheared, is stirred to a variety of optical fiber material using mixing elements, so that a variety of optical fiber material Mix more uniform, mixed optical fiber material flows into extruder chamber again, using extrusion by uniformly mixed optical fiber material to discharge port Direction output, is conducive to the uniform mixing of a variety of optical fiber materials, thus realization prepare light loss parameter in 200dB/km or less and There is the GI optical fiber of continuous refraction index distribution.

The utility model is further arranged to: the mixing chamber includes that kneading chamber and one end are connected, separately with kneading chamber The runner I and runner II, the runner I and runner II that one end is connected with feed space, extruder chamber respectively are symmetrical about kneading chamber Setting, the feed space are in flat with runner I and are vertically arranged, and the feed space prolongs along head body length direction level Stretch setting.

By using above-mentioned technical proposal, limit the shape of feed space and runner I, a variety of optical fiber material waters put down spread over into Material is indoor, then via runner I blanking, from feed space to the process of runner I, optical fiber material can be squeezed, and is conducive to improve more The mixing uniformity of kind optical fiber material.

The utility model is further arranged to: the mixing elements include along head body length direction extend screw rod with And the first actuator driven screw turns, several screwing elements sequentially arranged are axially arranged with along it on the screw rod, it is described The section configuration of screwing element is dolioform, the major diameter end wall of the screwing element and the inner wall conflict of kneading chamber.

By using above-mentioned technical proposal, the first actuator drives mixing elements rotation, and mixing elements are by sequentially arranging Screwing element composition, during rotation, the inner wall of major diameter end wall and kneading chamber contradicts screwing element, minor axis end wall and mixed It refines and forms gap between the inner wall of room, optical fiber material is squeezed in gap, sheared, and the uniform of optical fiber material mixing is significantly improved Property.

The utility model is further arranged to: the cross sectional shape of the kneading chamber is 8-shaped, and the mixing elements include two The screw rod being arranged in each inner ring of 8-shaped and the first actuator driven screw turns, the screw rod is along kneading chamber Length direction is extended, and is axially arranged with several screwing elements sequentially arranged along it on the screw rod, the screwing element Section configuration is triangle.

By using above-mentioned technical proposal, the cross sectional shape of kneading chamber is 8-shaped, and the cross sectional shape of screwing element is triangle Shape, equal threaded element in each inner ring of 8-shaped, after two screwing elements one circles of rotation, screwing element to optical fiber material into Row is squeezed three times, is sheared, and further increases the uniformity to the mixing of optical fiber material.

The utility model is further arranged to: the extrusion includes tapered squeezing bar and driving tapered squeezing bar rotation The second actuator, the tapered end of the tapered squeezing bar extends to discharge port direction, the outer wall and extrusion of the tapered squeezing bar It is formed between the inner wall of room and squeezes space.

By using above-mentioned technical proposal, taper squeezes out bar in rotary course, plays conveying to optical fiber material, pushes and make With optical fiber material is squeezed in extruding space, so that improving the mixing uniformity to optical fiber material again in discharge outlet.

The utility model is further arranged to: opposite feed end and discharge end, the cone are respectively equipped in the mouth mold Shape pressure ram stretches to feed end, and the feed end is trapezoidal import, and the discharge end is cylindrical outlet.

By using above-mentioned technical proposal, the shape of mouth mold is limited as cylindrical outlet, when optical fiber material squeezes out from mouth mold, Uniformly mixed rod-type optical fibre can be prepared, guarantees that optical fiber has uniform refractive index.

The utility model is further arranged to: the section configuration of the kneading chamber is circle or more than one circular Meaning combination.

By using above-mentioned technical proposal, the shape of kneading chamber is more various, and cross sectional shape is that one or more is round Combination, according to the different demands to optical fiber, selects the kneading chamber of suitable shape, thus the superior optical fiber of processability.

In conclusion the utility model has the following beneficial effects:

1, optical fiber material is added via different feed inlets to feed space, then successively flows into runner I, kneading chamber and runner In II, extruder chamber, optical fiber material passes through four extruding, shear actions respectively, to realize the uniform mixing to optical fiber material；

2, the shape of kneading chamber is different, for the optical fiber that different performance requires, selects suitable kneading chamber and screw thread member Part is sheared optical fiber material, is squeezed；

3, the extruder chamber of suitable shape and the extrusion that rotates in extruder chamber are selected, can simultaneously to optical fiber material again into It row shear-mixed and is smoothly discharged.

Detailed description of the invention

Fig. 1 is the cross-sectional view of one left view of embodiment；

Fig. 2 is the cross-sectional view of one main view of embodiment；

Fig. 3 is the structural schematic diagram for embodying mixing elements in embodiment one；

Fig. 4 is the structural schematic diagram for embodying extrusion in embodiment one；

Fig. 5 is the cross-sectional view for embodying two main view of embodiment；

Fig. 6 is the cross-sectional view for embodying two left view of embodiment；

Fig. 7 is the cross-sectional view for embodying three main view of embodiment；

Fig. 8 is the cross-sectional view for embodying example IV left view；

Fig. 9 is the cross-sectional view for embodying five main view of embodiment.

In figure: 1, head body；2, feed space；3, mixing chamber；4, extruder chamber；5, feed inlet；6, discharge port；7, mouth mold； 8, mixing elements；9, extrusion；10, runner I；11, screw rod；12, the first actuator；13, screwing element；14, tapered squeezing bar； 15, the second actuator；16, feed end；17, discharge end；18, runner II；19, kneading chamber.

Specific embodiment

The utility model is described in further detail below in conjunction with attached drawing.

Embodiment one:

A kind of gradient polymer optical fiber extrusion head, as shown in Figure 1, including head body 1, head body 1 is interior by upper Feed space 2(Fig. 2 is disposed under), mixing chamber 3 and extruder chamber 4, feed space 2 is in flat and along head body length Spend direction horizontal extension；Mixing chamber 3 include kneading chamber 19 and one end be connected with kneading chamber 19, the other end respectively with feed space 2, runner I10 and runner II18 that extruder chamber 4 is connected, feed space 2 are laid in the horizontal direction in head body 1, runner I10 It is arranged perpendicular to feed space 2, feed space 2 and runner I10 are T-shaped, and runner II18 and runner I10 is symmetrically set about kneading chamber 19 It sets.

As shown in Fig. 2, head body 1, which is equipped with several connection multiple groups, squeezes out the feed inlet 5 that unit is fed into feed space 2 (Fig. 1), the discharge port 6 being connected with extruder chamber 4 and the mouth mold 7 being connected at discharge port 6, a variety of optical fiber material respectively via into Material mouth 5 imports in feed space 2, flows into kneading chamber 19 via runner I10, is uniformly mixed in kneading chamber 19, then via stream Road II18 enters extruder chamber 4, finally via 7 extrusion molding of mouth mold, so that preparation has the optical fiber of homogeneous refractive index.

It should be noted that the extrusion head is also applicable in automatic feeder hopper, single screw rod feeder, is vented single spiral shell On bar extruder, micron filter；In addition, the extrusion head can also be with the use of cooling, drawing-off and shaping equipment, the application It is not set forth in detail.

As shown in Fig. 2, the cross sectional shape of kneading chamber 19 is circle, it is rotatably connected in kneading chamber 19 more for uniformly mixing The mixing elements 8 of kind optical fiber material.

As shown in figure 3, mixing elements 8 include along head body 1(Fig. 1) length direction extend screw rod 11 and driving spiral shell The first actuator 12 that bar 11 rotates is axially arranged with several screwing elements 13 sequentially arranged, screwing element along it on screw rod 11 13 section configuration is dolioform, the inner wall conflict of the major diameter end wall and kneading chamber 19(Fig. 1) of the screwing element 13, the first driving Part 12 drives screw rod 11 to rotate, and then screwing element 13 is driven to rotate, and the major diameter of screwing element 13 is contradicted in 19 inner wall of kneading chamber On, the minor axis end wall of screwing element 13 and the inner wall of kneading chamber 19 form gap, and during rotation, optical fiber material is sent out in gap It is raw to squeeze, shear, realize the uniform mixing to optical fiber material.

As depicted in figs. 1 and 2, runner II18 is in flat, the length direction of runner II18 and the length side of head body 1 To in the same direction, runner II18 and runner I10 are symmetrical arranged about kneading chamber 19, i.e. runner II18 is located at 19 lower section of kneading chamber and vertically It is arranged in kneading chamber 19, optical fiber material is through screwing element 13(Fig. 3) runner II18 is flowed into after extrusion shearing, flow into the wink of runner II18 Between, since flow section narrows, optical fiber material again passes by uniform mixing.

As shown in Fig. 2, extruder chamber 4 along head body 1 length direction be extended, shape be it is cylindric, in extruder chamber 4 It is rotatably connected to the extrusion 9 for exporting homogeneous material to discharge port 6.

As shown in figure 4, extrusion 9 includes tapered squeezing bar 14 and the second actuator for driving the rotation of tapered squeezing bar 14 15, the tapered end of tapered squeezing bar 14 extends to discharge port 6(Fig. 2) direction, the outer wall of tapered squeezing bar 14 and the inner wall of extruder chamber 4 Between formed and squeeze space, optical fiber material is squeezed, is mixed squeezing in space, so that optical fiber material be pushed to be discharged from mouth mold 7.

As shown in Fig. 2, being respectively equipped with opposite feed end 16 and discharge end 17 in mouth mold 7, feed end 16 is trapezoidal import, Discharge end 17 is cylindrical outlet, and the tapered end of conical screw 11 and feed end 16 are opposite, and uniformly mixed optical fiber stream is into charging End 16, then flows to discharge end 17, squeezes out cylindrical rod-type optical fibre.

The course of work: optical fiber material is thrown by different feeds mouth 5 to feed space 2, flows into kneading chamber 19 by runner I10 It is interior, the optical fiber material of runner I10 is flowed by squeezing for the first time by feed space 2；Optical fiber stream is into kneading chamber 19, the screw rod of rotation 11 squeeze optical fiber material, carry out second and squeeze, shear；The optical fiber material flowed out through kneading chamber 19 successively flows into runner II18 and squeezes out Room 4 is realized that third time is squeezed and is squeezed with the 4th time, realizes the uniform mixing of optical fiber material.

Embodiment two:

A kind of gradient polymer optical fiber extrusion head, as shown in figure 5, with embodiment one the difference is that kneading chamber 19 shape is different, and the cross sectional shape of kneading chamber 19 is two circular combinations, 8 word holes of horizontal or vertical shape, 8 Screw rod 11(in each inner ring in word hole is not shown in the figure), several screw threads members sequentially arranged are axially arranged with along it on screw rod 11 Part 13, the section configuration of screwing element 13 is dolioform, and two screwing elements 13 are vertically arranged.

As shown in fig. 6, from embodiment one another difference is that the shape of tapered squeezing bar 14 is different, extruder chamber 4 Shape invariance, the bar diameter of tapered squeezing bar 14 is gradually reduced towards tapered end, guiding role is played to optical fiber material, to improve light The uniform Combination of fibre material.

Embodiment three:

A kind of gradient polymer optical fiber extrusion head, as shown in fig. 7, with embodiment two the difference is that screw thread is first The shape of part 13 is different, and the section configuration of screwing element 13 is triangle, and two adjacent screwing element angles are supported in each 8 word hole Touching, as two screw rods 11(Fig. 3) rotation 1 week when, it can be achieved that three times squeeze optical fiber material, shear efficiency with higher, raising to light The mixing uniformity of fibre material.

Example IV:

A kind of gradient polymer optical fiber extrusion head, as shown in figure 8, with embodiment one the difference is that extruder chamber 4 shape is different, and the bar diameter of tapered squeezing bar 14 is constant, and the inner wall of extruder chamber 4 is obliquely installed, so that optical fiber material is in tapered squeezing Occur to squeeze in overstocked space between 4 inner wall of bar 14 and extruder chamber, shear.

Embodiment five:

A kind of gradient polymer optical fiber extrusion head, as shown in figure 9, with embodiment one the difference is that kneading chamber 19 shape is different, and the cross sectional shape of kneading chamber 19 is three circular combinations and total chamber, and three circular circle center line connectings are triangle The section configuration of shape, screwing element 13 is triangle, can further improve the cutting performance to optical fiber material.

This specific embodiment is only the explanation to the utility model, is not limitations of the present invention, ability Field technique personnel can according to need the modification that not creative contribution is made to the present embodiment after reading this specification, but As long as all by the protection of Patent Law in the scope of the claims of the utility model.

Claims (7)

1. a kind of gradient polymer optical fiber squeezes out head, including head body (1), it is characterised in that: the head body (1) It is inside from top to bottom disposed with feed space (2), mixing chamber (3) and extruder chamber (4), the head body (1) is if be equipped with Involvement connect multiple groups squeeze out unit to the feed inlet (5) being fed in feed space (2), the discharge port (6) being connected with extruder chamber (4) with And it is connected to the mouth mold (7) at discharge port (6)；It is more for uniform mixing that at least one is rotatably connected in the mixing chamber (3) The mixing elements (8) of kind optical fiber material；It is rotatably connected in the extruder chamber (4) for exporting homogeneous material to discharge port (6) Extrusion (9).

2. gradient polymer optical fiber according to claim 1 squeezes out head, it is characterised in that: mixing chamber (3) packet Include that kneading chamber (19) and one end are connected with kneading chamber (19), the other end is connected with feed space (2), extruder chamber (4) respectively Runner I (10) and runner II (18), the runner I (10) and runner II (18) are symmetrical arranged about kneading chamber (19), described Feed space (2) is in flat with runner I (10) and is vertically arranged, and the feed space (2) is along head body (1) length direction water It is flat to be extended.

3. gradient polymer optical fiber according to claim 1 squeezes out head, it is characterised in that: the mixing elements (8) The first actuator (12) including the screw rod (11) and driving screw rod (11) rotation that extend along head body (1) length direction, Several screwing elements (13) sequentially arranged, the section shape of the screwing element (13) are axially arranged with along it on the screw rod (11) Shape is dolioform, the major diameter end wall of the screwing element (13) and the inner wall conflict of kneading chamber (19).

4. gradient polymer optical fiber according to claim 2 squeezes out head, it is characterised in that: the kneading chamber (19) Cross sectional shape is 8-shaped, and the mixing elements (8) include two screw rods (11) being arranged in each inner ring of 8-shaped and drive First actuator (12) of dynamic screw rod (11) rotation, the screw rod (11) are extended along the length direction of kneading chamber (19), institute It states and is axially arranged with several screwing elements (13) sequentially arranged, the section configuration of the screwing element (13) along it on screw rod (11) For triangle.

5. gradient polymer optical fiber according to claim 1 squeezes out head, it is characterised in that: extrusion (9) packet It includes tapered squeezing bar (14) and drives the second actuator (15) of tapered squeezing bar (14) rotation, the tapered squeezing bar (14) Tapered end extend to discharge port (6) direction, between the outer wall of the tapered squeezing bar (14) and the inner wall of extruder chamber (4) formed squeeze Press space.

6. gradient polymer optical fiber according to claim 5 squeezes out head, it is characterised in that: divide on the mouth mold (7) Feed end (16) that She You be not opposite and discharge end (17), the tapered squeezing bar (14) stretch to feed end (16), the charging Holding (16) is trapezoidal import, and the discharge end (17) is cylindrical outlet.

7. gradient polymer optical fiber according to claim 2 squeezes out head, it is characterised in that: the kneading chamber (19) Section configuration is round or more than one circular any combination.