CN203973948U - Photon crystal optical fiber sensing unit package mould - Google Patents
Photon crystal optical fiber sensing unit package mould Download PDFInfo
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- CN203973948U CN203973948U CN201420445374.XU CN201420445374U CN203973948U CN 203973948 U CN203973948 U CN 203973948U CN 201420445374 U CN201420445374 U CN 201420445374U CN 203973948 U CN203973948 U CN 203973948U
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Abstract
The utility model discloses a kind of photon crystal optical fiber sensing unit package mould, comprise top cover, lower-left support plate, piece during bottom right support plate and optical fiber are fixed, and in optical fiber fixed piece on the symmetrical installation identical with bottom right support plate structure of lower-left support plate, lower-left support plate is connected with bottom right support plate, during top cover and optical fiber are fixed, piece is fixed on lower-left support plate and bottom right support plate, between lower-left support plate and bottom right support plate, be provided with glue-filling slot and excessive glue groove, the glue groove that overflows is cross bath, in glue-filling slot and excessive glue groove, be coated with one deck releasing agent layer, in glue-filling slot, fill colloid, Fibre Optical Sensor unit is placed in glue-filling slot, the two ends of optical fiber stick on the fixed middle piece of optical fiber.The utility model can adopt injecting glue mode in mould; to after thin round photonic crystal fiber orientation, put into mould; be packaged into square or deltiod; facilitate optical fiber sensitive axes direction location and probe to install; and strengthen probe protection, be also applicable to the packaging protection of the sensing unit of microscale structure of the same type.
Description
Technical field
The utility model relates to micro-meticulous mould applications, relates in particular to the sensing unit encapsulating mould of a kind of photonic crystal fiber or other microscale structure.
Background technology
When the extraneous factors such as optical fiber is under pressure, temperature, stress, strain affect, its characteristic changes, can be as the sensing unit of novel sensor, but because itself dimensional structure is minimum, its cross-section structure is the circular configuration of 250 micron diameters normally, this thin as material of hair makes it in application process, easily occur that as sensing unit Rig up error causes measuring accuracy reduction, and very easily fractures and cause signal interruption to cause testing malfunctioning abnormal conditions.For example, while adopting polarization-maintaining photonic crystal fiber as pressure sensitive material, its sensing principle be inside of optical fibre loose structure (be its covering and core region by many be parallel to fiber axis to small airport form) along size and the difference of arranging of the airport of two orthogonal x, y direction, changed the symmetry of index distribution, when stressed, birefringence can change.Obtain after calibration curve by demarcation, can record quantitatively external factor by detection system affects value.
By known its fast and slow axis of photon crystal optical fiber sensing principle sensitivity coefficient difference of factor impact to external world, if by non-sensitive sensor to sticking on testee when surface, not only sensitivity declines, and cause measured value and calibration curve deviation large, greatly reduce measuring accuracy, so must the strict sensitive direction of distinguishing sensing unit while installation.Because sensing unit is generally longer than 5 centimetres, optical fiber field installation site requires and timing signal installment state is consistent, and this brings great difficulty to undoubtedly the assembling of real sensor.
By sensing unit is encapsulated, its sensitive direction is determined and encapsulates fixing with specially joining instrument before encapsulation, its profile is changed over square from circle, also can be repacked into other shapes such as flat-square-shaped according to user's actual needs, when installation, can very soon sensitive area be sticked on to measured piece surface, and guarantee and demarcate state consistency, thereby greatly having reduced installation difficulty.And because photon crystal optical fiber sensing unit and being connected of common single mode signal Transmission Fibers adopt optical fiber splicer welding; junction point fragile structure; adopt packaged type fusion point can be protected; also can protect sensing unit itself; strengthen its overall construction intensity, frangibility not while making its actual use.
So; in order to strengthen the practical performance of photonic crystal fiber and similar minute sized sensor; facilitate sensor sensing set direction, stickup and installation, and sensing probe is played a protective role, need to design a kind of photon crystal optical fiber sensing unit package mould.
Utility model content
The purpose of this utility model is just to provide in order to address the above problem a kind of photon crystal optical fiber sensing unit package mould.
The utility model is achieved through the following technical solutions above-mentioned purpose:
A kind of photon crystal optical fiber sensing unit package mould, comprise top cover (1), lower-left support plate (2), piece (4) during bottom right support plate (3) and optical fiber are fixed, lower-left support plate (2) and in optical fiber fixed piece (4) upper symmetrical installation identical with bottom right support plate (3) structure, lower-left support plate (2) is connected with bottom right support plate (3), during top cover (1) and optical fiber are fixed, piece (4) is fixed on lower-left support plate (2) and bottom right support plate (3), between lower-left support plate (2) and bottom right support plate (3), be provided with glue-filling slot (5) and excessive glue groove, the glue groove that overflows is cross bath, the glue groove that overflows comprises laterally overflow glue groove (602) and the glue groove (601) that longitudinally overflows, the glue groove (601) that longitudinally overflows is arranged on glue-filling slot (5) top, glue-filling slot (5) is cuboid, on the contact-making surface of top cover (1) and lower-left support plate (2) and bottom right support plate (3), be provided with wedge, during optical fiber is fixed, on piece (4), be provided with optical fiber and determine middle slot (10), in glue-filling slot (5) and excessive glue groove, be coated with one deck releasing agent layer, glue-filling slot is filled colloid in (5), Fibre Optical Sensor unit (13) is placed in glue-filling slot (5), the two ends of optical fiber stick on the fixed middle piece (4) of optical fiber.
In above-mentioned, the glue-filling slot (5) and the excessive glue groove that between lower-left support plate (2) and bottom right support plate (3), arrange, be separated into after two halves and encapsulation probe (14) can be being taken out, and the demoulding is quick; During optical fiber is fixed, on piece (4), be provided with optical fiber and determine middle slot (10), guarantee after optical fiber embedding in center probe position; The excessive glue groove forming after wedge on top cover (1) is connected with lower-left support plate (2), bottom right support plate (3) longitudinally coincide and gap is left on both sides, a small amount of unnecessary colloid can be expressed into gap place, in the time that unnecessary colloid is too much, can laterally discharge by the glue groove that overflows.
Particularly, between lower-left support plate (2) and bottom right support plate (3), be provided with optical fiber and determine middle slot (10), the bottom of middle slot (10) determined by optical fiber and the downward translation 125 μ m (fiber radius) of the center line of glue-filling slot (5) locate level, the width that optical fiber is determined middle slot (10) is 250 μ m, with the center of guaranteeing popping one's head in after optical fiber embedding, during optical fiber is fixed, on piece (4), be provided with small stair, conveniently optical fiber two ends sticked on above with fixed fiber.
Further, the wedge on top cover (1) is chimeric with the glue groove (601) that longitudinally overflows, and between the long side of wedge and the side of the glue groove (601) that longitudinally overflows, is provided with clearance gap.
Further, top cover (1), lower-left support plate (2), during bottom right support plate (3) and optical fiber are fixed, on piece (4), be provided with screwed hole or through hole, between lower-left support plate (2) and bottom right support plate (3), adopt alignment pin and be connected bearing pin and be connected with connecting pin axis hole (7) by alignment pin axis hole (8) respectively, alignment pin and alignment pin axis hole (8) adopt slight interference to coordinate, during top cover (1) and optical fiber are fixed, piece (4) passes through top cover through hole (11) with bolt respectively, lower support plate screwed hole (12) and fixed middle piece screwed hole (9) are fixed on lower-left support plate (2) and bottom right support plate (3).
In above-mentioned, during top cover (1), lower-left support plate (2), bottom right support plate (3) and optical fiber are fixed, piece (4) each several part is connected by bolt or bearing pin, easy assembly and disassembly.
As preferably, encapsulating mould material is the accurate cold work die steel of Cr12MoV.
Encapsulating mould material adopts the accurate cold work die steel of Cr12MoV, avoids the mould depression that causes because hardness is too low and much higher hard, the too low crack of die causing of toughness, affects Mould Machining quality.
As preferably, in glue-filling slot (5), the colloid of perfusion is explosive substitute material, organosilicon material or polyimide material.
The beneficial effects of the utility model are:
The utility model photon crystal optical fiber sensing unit package mould; in use; can adopt injecting glue mode in mould; to after thin round photonic crystal fiber orientation, put into mould; be packaged into the shapes such as square or deltiod; facilitate optical fiber sensitive axes direction location and probe to install, and strengthen probe protection, be also applicable to the packaging protection of the sensing unit of microscale structure of the same type.
Brief description of the drawings
Fig. 1 is the exploded perspective view of the utility model photon crystal optical fiber sensing unit package mould;
Fig. 2 is the connection profile of lower-left support plate and bottom right support plate in the utility model;
Fig. 3 is the side view of top cover in the utility model;
Fig. 4 is the half-sectional view of the fixed middle piece of optical fiber in the utility model;
Fig. 5 is encapsulating structure schematic diagram of the present utility model.
In figure: 1. top cover; 2. lower-left support plate; 3. bottom right support plate; 4. the fixed middle piece of optical fiber; 5. glue-filling slot; 601. longitudinally excessive glue grooves; 602. laterally excessive glue grooves; 7. connecting pin axis hole; 8. alignment pin axis hole; 9. fixed middle piece screwed hole; 10. optical fiber is determined middle slot; 11. top cover through holes; 12. lower support plate screwed holes; 13. Fibre Optical Sensor unit; 14. encapsulation probes.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is described in further detail:
As Fig. 1, shown in Fig. 2 and Fig. 5, the novel a kind of photon crystal optical fiber sensing unit package mould of the utility model, comprise top cover (1), lower-left support plate (2), piece (4) during bottom right support plate (3) and optical fiber are fixed, lower-left support plate (2) and in optical fiber fixed piece (4) upper symmetrical installation identical with bottom right support plate (3) structure, lower-left support plate (2) is connected with bottom right support plate (3), during top cover (1) and optical fiber are fixed, piece (4) is fixed on lower-left support plate (2) and bottom right support plate (3), between lower-left support plate (2) and bottom right support plate (3), be provided with glue-filling slot (5) and excessive glue groove, the glue groove that overflows is cross bath, the glue groove that overflows comprises laterally overflow glue groove (602) and the glue groove (601) that longitudinally overflows, the glue groove (601) that longitudinally overflows is arranged on glue-filling slot (5) top, glue-filling slot (5) is cuboid, on the contact-making surface of top cover (1) and lower-left support plate (2) and bottom right support plate (3), be provided with wedge, during optical fiber is fixed, on piece (4), be provided with optical fiber and determine middle slot (10), in glue-filling slot (5) and excessive glue groove, be coated with one deck releasing agent layer, glue-filling slot is filled colloid in (5), Fibre Optical Sensor unit (13) is placed in glue-filling slot (5), the two ends of optical fiber stick on the fixed middle piece (4) of optical fiber.
As shown in Figure 4, between lower-left support plate (2) and bottom right support plate (3), be provided with optical fiber and determine middle slot (10), optical fiber is determined the bottom of middle slot (10) and the downward translation 125 μ m place levels of the center line of glue-filling slot (5), the width that optical fiber is determined middle slot (10) is 250 μ m, during optical fiber is fixed, on piece (4), is provided with small stair.
As shown in Figure 3, the wedge on top cover (1) is chimeric with the glue groove (601) that longitudinally overflows, and between the long side of wedge and the side of the glue groove (601) that longitudinally overflows, is provided with clearance gap.
Further, top cover (1), lower-left support plate (2), during bottom right support plate (3) and optical fiber are fixed, on piece (4), be provided with screwed hole or through hole, lower-left support plate (2) and bottom right support plate (3) adopt alignment pin and are connected bearing pin and are connected with connecting pin axis hole (7) by alignment pin axis hole (8) respectively, alignment pin and alignment pin axis hole (8) adopt slight interference to coordinate, during top cover (1) and optical fiber are fixed, piece (4) passes through top cover through hole (11) with bolt respectively, lower support plate screwed hole (12) and fixed middle piece screwed hole (9) are fixed on lower-left support plate (2) and bottom right support plate (3).
Encapsulating mould material is the accurate cold work die steel of Cr12MoV; In glue-filling slot (5), the colloid of perfusion is explosive substitute material, organosilicon material or polyimide material.Explosive substitute material, solidification temperature normal temperature, 24 hours without mobility, solidifies 7 days completely; Organosilicon material, solidification temperature normal temperature, hardening time 24h; Polyimide material, solidification temperature 85 is spent.
The utility model adopts injecting glue mode in mould; after being put into mould, thin round photonic crystal fiber is packaged into the shapes such as square or deltiod; facilitate the installation of sensitive axes direction location, Fibre Optical Sensor unit (13) and fibre-optical probe; and strengthen probe protection, be applicable to the packaging protection of the Fibre Optical Sensor unit of microscale structure of the same type.
The cross-section structure of glue-filling slot (5) is square or rectangle, to after selected Fibre Optical Sensor unit (13) sensitive direction good direction, place wherein, after colloid solidifies, thin round fiber can be packaged into rectangle or prolate type, facilitate sensing probe orientation and install.Also can, by being encapsulated in inside with normal signal Transmission Fibers fusion point, not only can strengthen sensing probe structural strength by encapsulation, also can light good protective effect to fragile connection.
The encapsulation implementation process of Fibre Optical Sensor unit (13) is lower-left support plate (2), bottom right support plate (3), after during optical fiber is fixed, piece (4) assembles, in glue-filling slot (5) and excessive glue groove (6), be coated with one deck releasing agent, in glue-filling slot (5), fill and Fibre Optical Sensor unit (13) are chosen after colloid to direction is put into glue-filling slot (5) and optical fiber is determined middle slot (10), two ends are fixed on the fixed middle piece (4) of optical fiber, load onto top cover (1) and wait for that colloid solidifies, unnecessary colloid can be discharged by the clearance gap arranging between the long side of wedge and the side of longitudinally excessive glue groove (601) or the glue groove (602) that laterally overflows.After colloid solidifies completely, Fibre Optical Sensor unit (13) is packaged into square or prolate type sensing probe, top cover (1) is pulled down, again lower-left support plate (2) and bottom right support plate (3) are separated, can the light demoulding.
The technical solution of the utility model is not limited to the restriction of above-mentioned concrete enforcement example, and every technology distortion of making according to the technical solution of the utility model, within all falling into protection domain of the present utility model.
Claims (6)
1. a photon crystal optical fiber sensing unit package mould, it is characterized in that: comprise top cover (1), lower-left support plate (2), piece (4) during bottom right support plate (3) and optical fiber are fixed, lower-left support plate (2) and in optical fiber fixed piece (4) upper symmetrical installation identical with bottom right support plate (3) structure, lower-left support plate (2) is connected with bottom right support plate (3), during top cover (1) and optical fiber are fixed, piece (4) is fixed on lower-left support plate (2) and bottom right support plate (3), between lower-left support plate (2) and bottom right support plate (3), be provided with glue-filling slot (5) and excessive glue groove, the glue groove that overflows is cross bath, the glue groove that overflows comprises laterally overflow glue groove (602) and the glue groove (601) that longitudinally overflows, the glue groove (601) that longitudinally overflows is arranged on glue-filling slot (5) top, glue-filling slot (5) is cuboid, on the contact-making surface of top cover (1) and lower-left support plate (2) and bottom right support plate (3), be provided with wedge, during optical fiber is fixed, on piece (4), be provided with optical fiber and determine middle slot (10), in glue-filling slot (5) and excessive glue groove, be coated with one deck releasing agent layer, glue-filling slot is filled colloid in (5), Fibre Optical Sensor unit (13) is placed in glue-filling slot (5), the two ends of optical fiber stick on the fixed middle piece (4) of optical fiber.
2. photon crystal optical fiber sensing unit package mould according to claim 1, it is characterized in that: between lower-left support plate (2) and bottom right support plate (3), be provided with optical fiber and determine middle slot (10), optical fiber is determined the bottom of middle slot (10) and the downward translation 125 μ m place levels of the center line of glue-filling slot (5), the width that optical fiber is determined middle slot (10) is 250 μ m, during optical fiber is fixed, on piece (4), is provided with small stair.
3. photon crystal optical fiber sensing unit package mould according to claim 1, it is characterized in that: the wedge on top cover (1) is chimeric with the glue groove (601) that longitudinally overflows, between the long side of wedge and the side of the glue groove (601) that longitudinally overflows, be provided with clearance gap.
4. photon crystal optical fiber sensing unit package mould according to claim 1, it is characterized in that: top cover (1), lower-left support plate (2), during bottom right support plate (3) and optical fiber are fixed, on piece (4), be provided with screwed hole or through hole, lower-left support plate (2) and bottom right support plate (3) adopt alignment pin and are connected bearing pin and are connected with connecting pin axis hole (7) by alignment pin axis hole (8) respectively, alignment pin and alignment pin axis hole (8) adopt slight interference to coordinate, during top cover (1) and optical fiber are fixed, piece (4) passes through top cover through hole (11) with bolt respectively, lower support plate screwed hole (12) and fixed middle piece screwed hole (9) are fixed on lower-left support plate (2) and bottom right support plate (3).
5. photon crystal optical fiber sensing unit package mould according to claim 1, is characterized in that: encapsulating mould material is the accurate cold work die steel of Cr12MoV.
6. photon crystal optical fiber sensing unit package mould according to claim 1, is characterized in that: in glue-filling slot (5), the colloid of perfusion is explosive substitute material, organosilicon material or polyimide material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420445374.XU CN203973948U (en) | 2014-08-07 | 2014-08-07 | Photon crystal optical fiber sensing unit package mould |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420445374.XU CN203973948U (en) | 2014-08-07 | 2014-08-07 | Photon crystal optical fiber sensing unit package mould |
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| CN203973948U true CN203973948U (en) | 2014-12-03 |
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| CN201420445374.XU Active CN203973948U (en) | 2014-08-07 | 2014-08-07 | Photon crystal optical fiber sensing unit package mould |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104129041A (en) * | 2014-08-07 | 2014-11-05 | 中国工程物理研究院总体工程研究所 | Packaging mould for photonic crystal fiber sensing unit |
| CN105111031A (en) * | 2015-09-22 | 2015-12-02 | 中国工程物理研究院化工材料研究所 | Demoulding method of large-sized explosive part |
| CN110864844B (en) * | 2019-11-27 | 2021-08-24 | 中国工程物理研究院流体物理研究所 | Optical fiber probe applied to detonation pressure measurement and manufacturing method thereof |
-
2014
- 2014-08-07 CN CN201420445374.XU patent/CN203973948U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104129041A (en) * | 2014-08-07 | 2014-11-05 | 中国工程物理研究院总体工程研究所 | Packaging mould for photonic crystal fiber sensing unit |
| CN105111031A (en) * | 2015-09-22 | 2015-12-02 | 中国工程物理研究院化工材料研究所 | Demoulding method of large-sized explosive part |
| CN110864844B (en) * | 2019-11-27 | 2021-08-24 | 中国工程物理研究院流体物理研究所 | Optical fiber probe applied to detonation pressure measurement and manufacturing method thereof |
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