CN1467520A - End-face processing method for optical fibre core wire - Google Patents
End-face processing method for optical fibre core wire Download PDFInfo
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- CN1467520A CN1467520A CNA031427049A CN03142704A CN1467520A CN 1467520 A CN1467520 A CN 1467520A CN A031427049 A CNA031427049 A CN A031427049A CN 03142704 A CN03142704 A CN 03142704A CN 1467520 A CN1467520 A CN 1467520A
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Abstract
To provide a method for processing an end face of a coated optical fiber to efficiently obtain the coated optical fiber having good optical performance by precisely forming the diagonal end face. The method for processing the end face of the coated optical fiber 1 by inserting the coated optical fiber 1 into a through-hole 4 formed at a guiding tool 5 and pressing the coated optical fiber to a heated mirror finished surface plate 7 comprises bringing the plate 7 into tight contact with the guiding tool 5 so as to cover one aperture (second aperture 13) of the through-hole 4 of the guiding tool 5, then pressing the fiber 1 to the plate 7. At this time, a mirror finished surface 6 of the plate 7 is preferably inclined within a range of from 30[deg.] to 60[deg.] with the axial direction of the through-hole 4 and is then brought into tight contact with the guiding tool 5. Also, the end face of the fiber 1 is preferably previously diagonally cut before the insertion of the fiber into the through-hole 4 of the guiding tool 5. The fiber 1 is preferably pressed to the plate 7 under pressing force of 0.5 to 3 kgf/cm<SP>2</SP>. (C)2004,JPO.
Description
Technical field
The invention relates to the invention of the end-face processing method of the plastic optical fiber heart yearn that uses as photosensitive head.
Background technology
As the plastic optical fiber heart yearn (hereinafter to be referred as optical fibre core) of photosensitive head,, need make the level and smooth end face processing in end in order to reduce the decay of light signal in its end as far as possible.
Be useful on the photosensitive head of profile form optical fiber in the photosensitive head, this fiber optic cables are that optical fibre core end face and major axes orientation tilt, and generally are miter angles, are reflecting surface with this end face, light signal oblique ejaculation or inject on this end face.
In producing the process of this profile form fiber optic cables, need with optical fibre core with the oblique direction of axle on prescind, its section is carried out attrition process just can reach reflecting surface to the optical mirror plane level requirement.But in the occasion that forms reflecting surface through grinding, this process need grinds for a long time, causes production efficiency low.
Japanese patent gazette-spy opens in the mirror processing method that flat 7-63918 discloses a kind of optical fibre core end face that uses mirror board.This method is, at first, shown in Fig. 5 (a), the end of optical fibre core 51 is cut off along the direction that becomes miter angle with 51 of optical fibre cores, then shown in Fig. 5 (b), this optical fibre core 51 is inserted in the through hole 52 of guiding moulds 53, make the end 54 of optical fibre core 51 expose the peristome 55 of the mould that leads a little.Then, shown in Fig. 5 (c), the mirror board 56 of heating is close on the end 54 of optical fibre core 51, mirror finish is carried out in the end fusion that presses and make optical fibre core 51.
Also have, at the port part fixed interface, the optical fibre core end face has carried out the plastic optical fiber cable after the mirror finish (hereinafter to be referred as fiber optic cables) and also can be used as photosensitive head.In the prior art, with the optical fiber end fixture splice, to optical fibre core end face minute surface method for processing be, at first, the overlayer of peelling off the fiber optic cables outside exposes optical fibre core, this optical fibre core is inserted in the through hole of interface, use cementing agent that optical fibre core is combined firmly with interface.Then, with cutter optical fibre core is cut off from the part that interface exposes, the method optical fibre core end face that the mirror board that heats with mechanical lapping or use shifts minute surface is processed into minute surface.
Japanese patent gazette-spy opens the optical fibre core end mirror method for processing surface of having introduced following fiber optic cables among the flat 6-289237.At first, shown in Figure 11 (a), optical fibre core 23 is inserted in the through hole of the interface 22 that has cone ports 21, and make its port that stretches out interface 24, then shown in Figure 11 (b), the optical fibre core 23 of redundance of the port 24 of interface is stretched out in cut-out, then shown in Figure 11 (c), contact with calandria 25 with the outer peripheral face of the port of interface 22, optical fibre core 23 fusions that are positioned at cone ports 21 are swollen, simultaneously with port 24 crimping of mirror board 26 with interface, make the end of the optical fibre core 23 in the interface port 24 be melted shaping with this, make mirror board 26 cooling then, make the end of optical fibre core 23 solidify to form the end face of the optical fibre core 23 as minute surface 27.Make the port that can simply interface be fixed on fiber optic cables in this way.
Summary of the invention
Japanese patent gazette-spy opens in the method for being put down in writing among the flat 7-63918, replaces grinding with mirror board processing, and shorten process time, and efficient has improved.But this method is to make the mirror board of heating be close to the end of outstanding a little optical fibre core and press, so have the foreign material such as burr that molten resin forms between mirror board and mould.
Shown in Fig. 5 (d), the burr 57 that occurs in the process hangs over around the peristome 55 of interface when optical fibre core 51 is extracted from through hole 52, separates with optical fibre core 51.At this moment, the part of optical fibre core end face is separated simultaneously with burr 57, makes the optical fibre core end face can not form the end face of smooth precision, causes the optical property of optical fiber low, and this optical property is low
Phenomenon is especially obvious in inclined-plane end face process.
And Japanese patent gazette-spy opens in the method for introducing among the flat 6-289237, makes the surplus length of optical fibre core certain, and the optical fibre core that cuts off the redundance that stretches out interface is not easy to grasp just rightly, and the too much or very few situation of surplus length usually takes place.When surplus length is too much, shown in Figure 12 (a), is melted the optical fibre core 23 that swells and can not all enters interface port 22, its result can advance melt and dissolved resin and form burr when being crimped on mirror board on the interface between interface and mirror board.When removing burr, the part of end face can be peeled off the formation defective.When surplus length is very few, shown in Figure 12 (b), is melted the optical fibre core that swells and can not all fills up interface, its result can form the space between interface and mirror board, can not form the processing minute surface.That is to say, in the above method, all can occur causing the optical fibre core optical property low because of the mirror finish defective.
And, in the said method, be melted the optical fibre core 23 that swells and can not all fill up particularly the bottom of tapered segment (Figure 12 right side), usually cause that the optical fibre core optical property is low, optical fibre core 23 and 22 fixing unstable situations of interface.
The present invention is exactly to address the above problem, and a kind of level and smooth accurate end face that has is provided, and optical property is good, and the optical fibre core end-face processing method that production efficiency is high is a purpose.
The invention relates to the optical fibre core that section is cut sth. askew in advance and insert in the through hole that forms in the guiding mould, push the job operation of processing optical fibre core end face with the mirror board of heating, it is characterized in that: mirror board is closely contacted with the guiding mould in the mode of side's peristome covering of the mould through hole that will lead, the end face of optical fibre core is contacted with mirror board, the optical fibre core end face is pressed onto on the mirror board.
And, the invention relates to the invention of the end-face processing method of plastic optical fiber heart yearn, this method comprises: with the cut-out operation of plastic optical fiber heart yearn by the length cut-out of determining; The 1st peristome and the 2nd peristome are connected, with from be formed with leave the more little conus portion of bore far away more with the 1st peristome the 2nd peristome of joint of through hole towards the 1st peristome and make the front end of plastic optical fiber heart yearn can stretch out certain-length and reach the insertion operation that the mode of institute's allocation is inserted plastic optical fiber; Heated coupling, the expansion chemical industry preface that the leading section of plastic optical fiber heart yearn is expanded; Mirror board is crimped on the 1st peristome of joint to cover the crimping process of the 1st peristome; With cooling way crimping is partly cooled off with the leading section fusion that makes optical fibre core again after softening, the leading section of optical fibre core is solidified, minute surface is transferred to the minute surface transfering process of the end face of optical fibre core.
End-face processing method about the plastic optical fiber heart yearn of the present invention also comprises the heat mirror panel so that the softening operation of the leading section fusion of optical fibre core.
Description of drawings
Fig. 1 is the sectional view of an embodiment of the processing unit (plant) of processing optical fibre core end face.
Fig. 2 is the sectional view of the manufacturing procedure of the present invention embodiment of job operation of processing the optical fibre core end face.
Fig. 3 is the sectional view of the manufacturing procedure of the present invention another embodiment of job operation of processing the optical fibre core end face.
Fig. 4 is the sectional view of an embodiment of optical fiber cleaver.
Fig. 5 is the sectional view of manufacturing procedure of an embodiment of the optical fibre core end-face processing method of prior art.
Fig. 6 is the sectional view of the interface that uses in the embodiment of optical fibre core end-face processing method of the present invention.
Fig. 7 is the sectional view of the example of the processing unit (plant) that uses in the embodiment of optical fibre core end-face processing method of the present invention.
Fig. 8 is the sectional view of an embodiment of optical fibre core end-face processing method of the present invention.
Fig. 9 is the sectional view of another embodiment of optical fibre core end-face processing method of the present invention.
Figure 10 is the sectional view of another embodiment of optical fibre core end-face processing method of the present invention.
Figure 11 is the sectional view of manufacturing procedure of an embodiment of the optical fibre core end-face processing method of prior art.
Figure 12 cut off to protrude the optical fibre core of interface, and the sectional view when making the optical fibre core fusion softening, (a) is the long situation of the surplus length of optical fibre core, (b) is the too short situation of the surplus length of optical fibre core.The explanation of symbol
1 optical fibre core
2 optical cables
3 clamping devices
4 through holes
5 guiding moulds
6 minute surfaces
7 mirror boards
8 calandrias
9 cooling devices
10 processing unit (plant)s
11 anchor clamps
12 first peristomes
13 second peristomes
14 mirror board surface of contact
30 cable cutting devices
31 heart yearns cut off frame
32 high temperature cutting knifes
401 joints
402 the 1st peristomes
403 the 2nd peristomes
404 through holes
405 conus portions
406 the 1st interconnecting parts
407 the 2nd interconnecting parts
410 processing unit (plant)s
411 optical cables
412 clamping devices
413 joint calandrias
414 joint cooling bodies
415 minute surfaces
416 mirror boards
417 mirror board calandrias
418 cooling devices
419 anchor clamps
420 optical fibre cores
432 bonding agents
Embodiment
The embodiment of the job operation of optical fibre core end face of the present invention is described referring now to Fig. 1-3.The job operation of optical fibre core end face of the present invention is to use: by the clamping device 3 of the optical cable 2 that contains optical fibre core 1, have the through hole 4 that optical fibre core 1 can be inserted guiding mould 5, have the mirror board 7 of minute surface 6, and calandria 8 that can heat mirror panel 7 contacted, send cold wind can for mirror board 7 and cool off that the processing unit (plant) 10 of the cooling device 9 of mirror board 7 finishes with mirror board 7.
In processing unit (plant) 10, clamping device 3, guiding mould 5, mirror board 7 and calandria 8 can move along the direction of principal axis of optical fibre core 1 is parallel.Wherein, guiding mould 5 can contact with calandria 8 with mirror board 7, mirror board 7.
Below illustrate with regard to each inscape in the processing unit (plant) 10.
Clamping device 3 is used for grip optical fiber cable 2, and the anchor clamps 11 of grip optical fiber cable 2 can be installed on the clamping device 3 in the diagram, also can unload from it.
Guiding mould 5 has the function of guiding fiber heart yearn 1 by through hole 4.The diameter of through hole 4 is greater than the external diameter of optical fibre core 1, if still will lose the function of guiding fiber heart yearn 1 too greatly, therefore, the diameter of through hole 4 should be less than 120% of optical fibre core 1 external diameter.The peristome that optical fibre core 1 inserts through hole 4 is called first peristome 12 (left side of Fig. 1), and the peristome that optical fibre core 1 stretches out through hole 4 is called second peristome 13 (right side of Fig. 1).
The inclined-plane at the 2nd peristome 13 places of guiding mould 5 contacts with mirror board 7, and the inclined-plane at the 2nd peristome 13 places of this guiding mould 5 is called mirror board surface of contact 14.The mirror board surface of contact 14 of the guiding mould 5 in the legend forms the oblique angle with the axial angle according to the rules of through hole 4, and the angle of this regulation preferably end face and the axial formed angle with cut optical fibre core 1 described later is big to identical.
Calandria 8 contacts with mirror board 7, can heat mirror panel 7.
Now contrasting Fig. 2-4 illustrates and has used the job operation that has with the optical fibre core end face of the processing unit (plant) 10 of upper-part.The job operation of this optical fibre core end face is, at first, removes the cladding material of fibre cable end outside, exposes the optical fibre core of the inside, and the clamp clamps fiber optic cables with clamping device are contained in cable cutting device 30 shown in Figure 4 with it.Optical cable shearing device 30 in the embodiment of the present invention be with the direction of the axial bevel of optical fibre core 1, promptly to cutting off optical fibre core 1 on the vergence direction of the fixed to some extent angle of the axial vertical mask of optical fibre core 1.This device by heart yearn cut off frame 31 and can with the direction of the axle bevel of optical fibre core 1 on move and cut off that the high temperature cutting knife 32 of optical fibre core 1 constitutes.Cut off with high temperature cutting knife 32 with the front end of this optical cable shearing device 30 optical fibre core 1.At this moment, make the end face of optical fibre core 1 parallel, become vergence direction that optical fibre core is cut off with axial with mirror board surface of contact 14.Because be in advance the front end of optical fibre core 1 to be cut off according to its end face and mirror board surface of contact 14 parallel modes, the end face of optical fibre core 1 contacts with specular surface body 7 equably, so can obtain more level and smooth end face efficiently.
Then will from the optical cable shearing device, take out with the optical cable of the clamp clamps of clamping device, shown in Fig. 2 (a), be installed in anchor clamps 11 in the clamping device 3 on, optical fibre core 1 is fixing.
Then as Fig. 2 (b) shown in, the minute surface 6 of mirror board 7 closely is attached on the mirror board surface of contact 14 of the mould 5 that leads in the mode that covers second peristome 13.
Then shown in Fig. 3 (a), make clamping device 3 approaching with guiding mould 5, optical fibre core 1 is inserted in the through hole 4 of guiding mould 5, and further to 5 propellings of guiding mould the end face of optical fibre core 1 closely is pressed onto on the minute surface 6 of mirror board 7 clamping device 3.At this moment, the end face of optical fibre core 1 is substantially parallel with minute surface 6, and is pressed.
Then calandria 8 is touched on the mirror board 7, be heated, make the end face fusion of optical fibre core 1 softening, then shown in Fig. 3 (b), calandria 8 is removed from mirror board 7, and blown a cold wind on mirror board 7 with cooling device 9 and the end face of optical fibre core 1 to be solidified mirror board 7 and the cooling of guiding mould 5.Like this, thus just finished and minute surface 6 is transferred to the minute surface of having finished optical fibre core 1 end face on the minute surface of optical fibre core 1 end face shifted processing.
In the above-mentioned end-face processing method, when the end face with optical fibre core 1 is cut into the inclined-plane, the cutting direction of optical fibre core 1 (the blade moving direction of high temperature cutting knife 32) and the blade of high temperature cutting knife 32 and the oblique angle that the side became of optical fibre core 1 (cutting off angle θ) are between 5 °～30 °, and be preferred
8 °～12 °, cutting angle is too little, and the end face of the optical fibre core of being cut 1 may be run in the side of high temperature cutting knife; Cutting angle is too big, optical fibre core 1 can not be cut off smoothly.
The temperature of high temperature cutting knife between 180～270 ℃, preferred 220～240 ℃.The temperature of high temperature cutting knife is during less than 180 ℃, and section can produce the defective indenture; When the temperature of high temperature cutting knife was higher than 270 ℃, section can produce the dross phenomenon.Cut-off velocity (translational speed of high temperature cutting knife) is preferably between the 5-15mm/ branch, and cut-off velocity is greater than the 15mm/ timesharing, and section can produce the defective indenture, and cut-off velocity is less than the 5mm/ timesharing, and section can produce the dross phenomenon.
When closely being attached to the minute surface 6 of mirror board 7 on the guiding mould 5, preferably and through hole 4 30-60 ° angle axially arranged, that is to say that the mirror board surface of contact 14 of guiding mould 5 is 30-60 ° with the inclined-plane and the optical fibre core direction of principal axis angulation of optical fibre core 1 formation of the axial angulation in hole 4, cut-out.Closely contacting processed optical fiber is especially suitable for use as the profile form optical fiber cable with guiding mould 5 to make mirror board 7 with this angle.
The end face of optical fibre core 1 closely is pressed onto pressure on the minute surface of mirror board 7 at 0.5-3.0kgf/cm2, pressure control is being for thereby the resin that prevents softening fusion enters the situation that guiding mould 5 and the space between the mirror board 7 cause plate defects below the 3.0kgf/cm2, thereby pressure control is being that end face in order to ensure optical fibre core 1 closely is pressed onto on the minute surface of mirror board 7 and finishes the minute surface transfer really more than the 0.5kgf/cm2.
Normally used optical cable is meant the crust that is wrapped with materials such as tygon outside optical fibre core.
The job operation of the end face of above-mentioned optical fibre core is with clamping device 3 that optical fibre core 1 is fixing, the end face of optical fibre core 1 closely is pressed onto on the minute surface of mirror board 7, the method of push, fusion is softening and cooling formation minute surface shifts, so do not need to grind for a long time, can carry out the mirror finish of optical fibre core expeditiously.
And, after in mode that second peristome 13 is covered the minute surface 6 of mirror board 7 closely being attached on the 2nd peristome 13 of guiding mould 5, end face with optical fibre core 1 closely is pressed onto on the minute surface 6 of mirror board 7 again, can prevent and treat molten resin effectively and enter the space of leading between mould 5 and the mirror board 7.And because be that the optical fibre core 1 that quality is little is pressed on the minute surface of mirror board, so pressure is easy to control.Too high the causing easily between guiding mould 5 and the mirror board 7 of pressure produces the space.And said method is controlled easily owing to pressure, thus be not easy between guiding mould 5 and mirror board 7, to produce the space, thus prevented veining defect.Therefore when optical fibre core 1 is extracted, can not cause the generation of plate defects from through hole 4, can produce the optical fibre core 1 of inclined end face closely because of the cause of burr.When this end face is used as reflecting surface, can obtain having the optical fibre core 1 of favorable optical performance.Use the optical cable of this optical fibre core to be especially suitable for use as the profile form optical fiber cable.
The end-face processing method of the optical fibre core of the present invention of the processing unit (plant) that has used Fig. 1 below more specifically is described.In the guiding mould 5 of processing unit (plant) 10,14 one-tenth miter angles of the direction of principal axis of through hole 4 and mirror board surface of contact.
End face adds man-hour, and the crust diameter of optical cable is 2.2mm, and the external diameter of optical fibre core is 1.0mm, in the end face manufacturing procedure, at first, the crust of optical cable 2 ends is peeled off the optical fibre core 1 that exposes the inside, then clamp optical cable 2, it is contained on as shown in Figure 4 the optical cable shearing device 30 with anchor clamps 11.The front end of optical fibre core 1 is cut off with high temperature cutting knife 32, make the end face of optical fibre core 1 become miter angle, form angled end-face with the optical fibre core direction of principal axis.
Then the anchor clamps 11 with clamping optical cable 1 take off from optical cable shearing device frame 31, shown in Fig. 2 (a), are fixed on the clamping device 3 anchor clamps 11 with this that optical fibre core 1 is fixing.
Then as Fig. 2 (b) shown in, with the minute surface 6 of mirror board 7 with this firmly mode of the 2nd peristome 13 closely be attached on the mirror board surface of contact 14 of processing mold 5.
Then shown in Fig. 3 (a), make clamping device 3 approaching with guiding mould 5, optical fibre core 1 is inserted in the through hole 4 of guiding mould 5, and further to 5 propellings of guiding mould the end face of optical fibre core 1 closely is pressed onto on the minute surface 6 of mirror board 7 abreast clamping device 3, and makes pressure reach 1.5kgf/cm2.
At this moment, the end face of optical fibre core 1 is substantially parallel with minute surface 6, and is pressed.
Then calandria 8 is touched on the mirror board 7 and be heated, make the end face fusion of optical fibre core 1 softening.Then shown in Fig. 3 (b), remove calandria 8, and on mirror board 7, blow a cold wind over blowing mouth (cooling device 9), the end face of optical fibre core 1 is solidified mirror board 7 and processing mold 5 coolings, like this, just minute surface 6 is transferred to the end face of optical fibre core 1, the minute surface of having finished optical fibre core 1 end face shifts processing.Then will lead mould 5 and mirror board 7 removed, and from clamping device 3 optical fibre core taken out and just obtains the profile form optical cable.The optical fibre core of this profile form optical cable has accurate level and smooth miter angle inclined-plane, and optical property is good.
Following other embodiment that the end-face processing method of optical fibre core is described with reference to Fig. 6-10.This job operation is when the outside of optical fibre core has an end of the optical cable that coats material to install a joint additional, finishes the mirror processing method of optical fibre core end face.
Fig. 6 represents the employed joint 401 of mirror processing method of the optical fibre core end face of present embodiment.Form the through hole 404 that runs through the 1st peristome 402 and the 2nd peristome 403 in this joint 401, the 1st peristome 402 1 sides at through hole 404, there is a bore to leave the more little conus portion 405 of the 1st peristome 402 bore far away more, in the 2nd peristome 403, forms the 1st interconnecting part 406.By top to the 1 interconnecting part of conus portion 405, form the 2nd little interconnecting part 407 of relative aperture the 1st interconnecting part 406.The internal diameter of the 1st interconnecting part 406 and the external diameter of optical cable are roughly the same, and the internal diameter of the 2nd interconnecting part 407 and the external diameter of optical fibre core are roughly the same.Because the through hole of this shape is restricted when optical cable is inserted, has only optical fibre core can pass the 2nd interconnecting part 407 and arrive conus portion 405.
In joint 401, the taper theta of conus portion 405 is preferably the 5-28 degree below 90 degree.Taper theta is greater than 90 degree, and the softening big needed time of rising of optical fibre core end face fusion is elongated, and production efficiency reduces.The taper theta here is meant in the sectional view as the conus portion 405 of Fig. 6, the formed angle of the side line of conus portion.
Because will heat from the outside, the outer wall at conus portion 405 places of joint 401 should approach as far as possible, so that heat transfer efficiency improves.
The employed processing unit (plant) 410 of this example as shown in Figure 7, this processing unit (plant) 410 roughly by the clamping device 412 that is used for clamping optical cable 411, at least can heated coupling 401 conus portion 405 the outside joint calandria 413, at least can cooling joint 401 the 1st interconnecting part 406 the outside joint cooling body 414, have the mirror board 416 of minute surface 415, contact with mirror board 416 and mirror board calandria 417 that can heat mirror panel 416 and can being constituted to the cooling device 418 that mirror board 416 is blown a cold wind over.
In this processing unit (plant) 410, clamping device 412, mirror board 416, mirror board calandria 417 can with the axially parallel of optical cable 411 move.And mirror board 416 can contact with joint 401, and mirror board calandria 417 can contact with mirror board 416.
Clamping device 412 can be loaded onto the anchor clamps 419 of clamping optical cable 411.Mirror board 416 at least with the contacted part of optical fibre core be minute surface 415.
The job operation of the optical fibre core end face minute surface of present embodiment describes with that.At first, shown in Fig. 8 (a), in the operation that exhumes, the external diameter of optical cable is 2.2mm, and the external diameter of optical fibre core is 1.0mm, at first the crust of optical cable end is peeled off, exposes the optical fibre core 420 of the inside.Shown in Fig. 8 (b), in cutting off operation, optical cable 411 usefulness anchor clamps 419 are fixing, and the optical fibre core 420 that will expose cuts off in the place of certain-length then.Certain-length herein is meant when optical fibre core 420 inserts joints, is equivalent to the length of optical fibre core of volume in the space of the tapered segment after optical fibre core inserts by the volume of the 1st peristome exposed portions serve.
When the optical fibre core that will expose cuts off, used high-temperature machining off line 431, after the blade of high-temperature machining off line 431 is heated optical fibre core 420 has been cut off.Cut off in the operation, when optical fibre core is unkitted top connection, carry out, so can guarantee to cut off accurately.During cut-out, be with the blade of heating nearly optical fibre core 420 cut off, so more can guarantee to cut off accurately.In order to ensure cutting off optical fibre core 420 accurately, identical with aforementioned embodiments, the oblique angle that the side became (cutting angle θ) of the cutting direction of optical fibre core 420 (the blade moving direction of high temperature cutting knife) and high temperature cutting knife and optical fibre core 420 between 5 °～30 °, preferred 8 °～12 °.The temperature of high temperature cutting knife between 180～270 ℃, preferred 220～240 ℃.Cut-off velocity (translational speed of high temperature cutting knife) is between 5～15mm/ divides.
Then be bonding drug painting process, shown in Fig. 8 (c), at the outside of optical fibre core 420 coating adhesive 432, operable bonding agent can be given an example as epoxy resin etc.
It then is the insertion operation of optical fibre core, shown in Fig. 8 (d), the fiber optic cables 420 of finishing said process are inserted by the 2nd peristome 403, the front end that always is inserted into optical fibre core 420 through through hole 404 stretches out the 1st peristome 402 to certain position, this certain position is meant when optical fibre core 420 inserts joint, when being equivalent to optical fibre core and inserting the volume in the space behind the tapered segment by the volume of the 1st peristome 402 exposed portions serve, the position that optical fibre core should be inserted into.In the middle of present embodiment, as long as the shoulder 433 of optical cable 411 inserts and when contacting with the front end wall 434 of the 1st interconnecting part 406, the position of optical cable 411 is exactly the position that optical fibre core will be inserted into.
Then be the expansion chemical industry preface of optical fibre core, shown in Fig. 9 (a), anchor clamps 419 be fixed on the clamping device 412, joint calandria 413 is contacted with the front end side face of joint 401 heat.Meanwhile, the side face of joint 401 in the outside of the 1st interconnecting part 406 is contacted with joint cooling body 414 cool off, make the part except that the end of optical cable 411 can fusion softening like this.Like this, expand gradually with regard to optical fibre core 420 front ends that make optical fibre core 420 be positioned at conus portion and filled the space of conus portion 405 owing to the heating of butt junction 401.This moment joint calandria 413 temperature as long as to reach the temperature that optical fibre core 420 is expanded just passable, that optical cable 411 can not expanded is just passable as long as the temperature of joint cooling body 414 reaches.
Then be the crimping process of optical fibre core, shown in Fig. 9 (b),, its minute surface 415 blocked first peristome 402 continuing to be crimped onto on the joint 401 with mirror board 416 in the process of heating with 413 butt junctions 401 of joint calandria.When mirror board 416 is crimped onto on the joint 401, mirror board 416 will be pushed from the optical fibre core 420 that first peristome 402 protrudes, and make in its space that is filled into conus portion 405.
Then be the minute surface transfering process of optical fibre core end face, shown in Figure 10 (a), mirror board calandria 417 contacted with mirror board 416, and push mirror board 416 and mirror board 416 is heated with mirror board calandria 417.When optical fibre core 420 was expanded, the optical fibre core 420 that fusion is softened closely contacted with the minute surface 415 on the mirror board 416.
Then shown in Figure 10 (b), at mirror board 416 with when joint 401 contacts, the shower nozzle of cooling device 418 makes its cooling to joint 401 and mirror board 416 blast-cold gas, and the end face of optical fibre core 420 is solidified, and just minute surface 415 is transferred to and made the end face of optical fibre core 420.
At last, take off joint cooling body 414, joint calandria 413, mirror board 416 (contain and make mirror board calandria 417), take off optical cable 411, so just obtained finishing the optical cable 411 of the end face processing of optical fibre core 420 from clamping device 412 from joint 401.
In the middle of the end-face processing method of the optical fibre core of above embodiment, because can be accurately with optical fibre core 420 customized cut-offs, optical fibre core 420 can be inserted into preposition through through hole 404, so when optical fibre core molten 420 being expanded with joint calandria 413 heated couplings 401, can just in time be full of in the space of conus portion 405, can not occur because of being melted space or the very few situation that can not fill up conus portion 405 that the optical fibre core that swells too much can not all enter conus portion 405.The shower nozzle of cooling device 418 makes its coldization to joint 401 front ends and mirror board 416 blast-cold gas, when the end face of optical fibre core 420 is cured, minute surface 415 is transferred to the end facet of optical fibre core 420, can not produce the bad defective of end face, the optical fibre core of being finished 420 has the good optical performance, the defective products incidence is low, and production efficiency is also very high.
And in the above embodiment, before optical fibre core 420 is inserted through hole 404, because more coated bonding agents 432 in the outside of optical fibre core 420, make optical fibre core 420 and joint 401 bonding, the stationkeeping that optical fibre core 420 is being determined, so can not occur because of being melted space or the very few situation that can not fill up conus portion 405 that the optical fibre core that swells too much can not all enter conus portion 405, the end face of optical fibre core 420 is level and smooth, has the good optical performance.
And in the middle of the job operation of the optical fibre core end face minute surface of above embodiment,, make optical fibre core 420 begin to fill gradually from the top of conus portion 405 owing to before the crimping process of optical fibre core, carry out the expansion chemical industry preface of optical fibre core.In crimping process thereafter owing to given when warmed-up optical fibre core 420 usefulness joint calandrias 413 proceed to heat in expansion chemical industry preface, mirror board 416 is crimped on the joint 401, so optical fibre core 420 can just in time be full of in whole spaces of conus portion 405, add at optical fibre core 420 and joint 401 and fixedly secure, thereby prevented bad generation of defects more.
The present invention is not limited to the application in the above embodiment.Also passable as the integrated heating and pressurizing of carrying out optical fibre core of specular surface body and end face calandria.Such a specular surface body and the integrated processing unit (plant) that makes of end face calandria have been oversimplified.
In coating process, not only can be at the periphery coating adhesive 432 of optical fibre core 420, also can be at through hole 404 inner face coating adhesives, perhaps at the inner face of the outer peripheral face of optical fibre core 420 and through hole 404 coating adhesive all.
In the middle of the optical fibre core end-face processing method of embodiment of the present invention, each procedure is according to expansion chemical industry preface, crimping process, minute surface transfering process in sequence, but the present invention is not limited to this order.Such as, expansion chemical industry preface and crimping process can carry out simultaneously, crimping process and mirror-polishing transfering process also can carry out simultaneously, even expansion chemical industry preface, crimping process and minute surface transfering process can carry out also passable simultaneously.
Also have, expose operation, cut-out operation, bonding agent painting process also passable.
The present invention not only can be applied to the optical cable of single fiber heart yearn, also can be applied to the optical cable of many optical fibre cores, and the optical cable of being processed can be coated with the optical cable of crusts such as tygon on the optical fibre core of organic class or mineral-type.
The end-face processing method of the optical fibre core in the claim 1 of the present invention is with pushing on the fiber cores alignment mirror board, having improved the end face minute surface working (machining) efficiency of optical fibre core.After making mirror board closely be attached to side's opening part of through hole of guiding mould, again optical fibre core is pressed on the mirror board, enters in the space of guiding mould and mirror board so prevented the resin of fusion.And, moving the less optical fibre core of quality of control easily, the pressure that can control optical fibre core well is unlikely too high, has prevented the formation of burr etc., thereby has produced the optical fibre core with level and smooth accurate end face.
And, the present invention carries out high-precision customized cut-off to optical fibre core earlier, again optical fibre core is inserted in the through hole of joint and reach preposition, so heat at joint, just in time be full of conus portion during optical fibre core end expansionization, can not occur because of being melted space or the very few situation that can not fill up conus portion that the optical fibre core that swells too much can not all enter conus portion.Cooling device makes joint and mirror board cooling, when the end face of optical fibre core is cured minute surface is transferred to the end face of optical fibre core, thereby is prevented bad generation of defects, and the minute surface of the optical fibre core end face of being finished has the good optical performance.And the end-face processing method of optical fibre core of the present invention is after expansion chemical industry preface, when continuing to make optical fibre core to expand by the butt junction heating, mirror board is crimped on the joint, so that optical fibre core is filled into the bottom of conus portion from the top of conus portion, so optical fibre core and joint are fixedly secured, thereby do not reduce optical characteristics.It is low to add the defective products incidence, thereby has improved production efficiency.
Claims (9)
1. the plastic optical fiber heart yearn that will cut inclined end face in advance inserts the through hole that forms in the guiding mould, by the end-face processing method of the plastic optical fiber heart yearn on the mirror board that is pressed in heating, it is characterized in that then,
With cover the guiding mould through hole side's peristome mode with mirror board closely be crimped on the guiding mould on, the end face of optical fibre core is contacted with mirror board, the plastic optical fiber heart yearn is pushed to mirror board.
2. the end-face processing method of plastic optical fiber heart yearn as claimed in claim 1 is characterized in that, when the minute surface of mirror board closely is attached on the guiding mould, the minute surface of mirror board and through hole 30-60 ° angle axially arranged.
3. the end-face processing method of plastic optical fiber heart yearn as claimed in claim 1 is characterized in that, the pressure that the plastic optical fiber heart yearn closely is pressed onto on the mirror board is 0.5-3.0kgf/cm
2
4. the invention of the end-face processing method of a plastic optical fiber heart yearn, this method comprises:
With the cut-out operation of plastic optical fiber heart yearn by the length cut-out of determining;
The 1st peristome and the 2nd peristome are connected, with from be formed with leave the more little conus portion of bore far away more with the 1st peristome the 2nd peristome of joint of through hole towards the 1st peristome and make the front end of plastic optical fiber heart yearn can stretch out certain-length and reach the insertion operation that the mode of institute's allocation is inserted plastic optical fiber;
Heated coupling, the expansion chemical industry preface that the leading section of plastic optical fiber heart yearn is expanded;
Mirror board is crimped on the 1st peristome of joint to cover the crimping process of the 1st peristome;
With cooling way crimping is partly cooled off with the leading section fusion that makes optical fibre core again after softening, the leading section of optical fibre core is solidified, minute surface is transferred to the minute surface transfering process of the end face of optical fibre core.
5. the end-face processing method of plastic optical fiber heart yearn as claimed in claim 4 is characterized in that, the tapering of the conus portion that forms in joint is below 90 degree.
6. the end-face processing method of plastic optical fiber heart yearn as claimed in claim 4 is characterized in that, the crimping process in the method carries out after expansion chemical industry preface.
7. the end-face processing method of plastic optical fiber heart yearn as claimed in claim 4 is characterized in that, this method also comprises the heat mirror panel so that the softening operation of the leading section fusion of optical fibre core.
8. as the end-face processing method of any one described plastic optical fiber heart yearn of claim 1-7, it is characterized in that, this method comprises that also use is coated with the optical cable of clad material in the outside of plastic optical fiber heart yearn, the clad material of this plastic optical fiber cable end is removed made the operation of exposing that optical fibre core exposes.
9. as the end-face processing method of any one described plastic optical fiber heart yearn of claim 1-7, it is characterized in that the integrated parts of mirror board and heater means.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002167161 | 2002-06-07 | ||
| JP2002167162A JP2004012878A (en) | 2002-06-07 | 2002-06-07 | Method for processing end face of coated optical fiber |
| JP2002167162 | 2002-06-07 | ||
| JP2002167161A JP2004012877A (en) | 2002-06-07 | 2002-06-07 | Method for processing end face of coated optical fiber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1467520A true CN1467520A (en) | 2004-01-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA031427049A Pending CN1467520A (en) | 2002-06-07 | 2003-06-06 | End-face processing method for optical fibre core wire |
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| Country | Link |
|---|---|
| CN (1) | CN1467520A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106248250A (en) * | 2016-10-11 | 2016-12-21 | 北京信息科技大学 | A kind of thermometry using fiber end face groove structure |
-
2003
- 2003-06-06 CN CNA031427049A patent/CN1467520A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106248250A (en) * | 2016-10-11 | 2016-12-21 | 北京信息科技大学 | A kind of thermometry using fiber end face groove structure |
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