CN101502916A - Laser multi-point automatic welding and sealing method as well as welding device of metallized fiber optic sensor - Google Patents
Laser multi-point automatic welding and sealing method as well as welding device of metallized fiber optic sensor Download PDFInfo
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- CN101502916A CN101502916A CN 200910068016 CN200910068016A CN101502916A CN 101502916 A CN101502916 A CN 101502916A CN 200910068016 CN200910068016 CN 200910068016 CN 200910068016 A CN200910068016 A CN 200910068016A CN 101502916 A CN101502916 A CN 101502916A
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Abstract
The invention relates to a novel laser multi-point automatic welding method and a welding device of a metallized optical fiber sensor. The welding method is as follows: the horizontal laser light radiating from a laser firstly enters a beam expanding system, then is converted to vertical laser light through a reflecting mirror of 45 degrees, and is focused through a focusing mirror; the welded metallized optical fiber sensor is driven to realize the horizontal movement and rotation by two servo motors; when the welding position moves to the focusing position of the laser, an DSP control system controls the laser and gives off a pulse to complete a welding spot; so back and forth, until all the welding spots are completed. Through CCD detection, deviated positions or poor welding spots can be fed back to the DSP system to carry out the repair welding in the entire process. The welding system replaces the traditional metallized optical fiber welding process, which not only has the advantages of good welding effect and high reliability, but also realizes multi-point welding automatically under the control of DSP for the entire system; the welding system can be operated indoor or outdoor, thus greatly improving the production and maintenance efficiency of the metallized optical fiber.
Description
[technical field]:
The present invention relates to metallize the fixedly method for packing of optical fiber and sensor thereof has particularly designed portable equipment and process easily at field work, can finish the multiple spot welding of metallization optical fiber by laser automatically.
[background technology]:
Metallized fiber optic sensor is widely used in various fields of measurement, can carry out accurate measurement to parameters such as temperature, distortion.But in measurement, require metallized fiber optic sensor self closely to contact, and relative displacement can not be arranged with object being measured.Traditional fixing means extensively adopts the method for the bonding or electric welding of glue, and this method is not only backward in technique, and fixed effect is poor, is subjected to extraneous ring mirror image also very big, is not easy to carry, and is difficult to guarantee working reliably and with long-term under the open-air ring mirror.
[summary of the invention]:
The objective of the invention is to solve in the said method not enough, provide a kind of can be in indoor or open-air metallized fiber optic sensor laser multiple spot automatic soldering device and welding method of carrying out portable operation.
The welding method of metallization optical fiber provided by the invention comprises successively:
The first, will need the metallized fiber optic sensor that welds by frock or adopt hand-held mode to be placed on the jig of putting on the workbench, if optical fiber surface does not have metal coating, need be at exposed quartz surfaces position coating to be welded soldering paste;
The second, the position that will need to weld inputs to the DSP control system by external input device;
Three, dsp system control servomotor drives translation and rotary table, and the bond pad locations of needs welding is placed focal position of laser, and according to the defocusing amount out of focus of default;
Four, after the CCD monitoring workpiece arrived assigned address, DSP control laser instrument sent a laser pulse as required, finishes the welding of a solder joint;
Five, by the circulation in the 3rd, the 4th step, finish the welding of whole metallized fiber optic sensor.
Whole process positions and monitors by CCD, carries out repair welding automatically if any position deviation or poor welding spots.
A kind of laser automatic soldering device of realizing above-mentioned welding method comprises:
● laser instrument: be used to produce the laser that need weld usefulness;
● beam expanding lens: with the light spacing shaping that laser instrument sends, it is big that beam diameter becomes, the angle of divergence of compression laser;
● 45 degree speculums: multimedium film speculum is used for the laser of horizontal direction is become vertical direction;
● focus lamp: the optical focus mirror, be used for laser beam is assembled, increase its power density;
● servo control mechanism: the drive workpiece moves horizontally and rotates;
● CCD monitoring system: form by imaging optical path and CCD, be positioned at focus lamp top, be used to locate monitoring with whole welding process and result;
● the DSP control module: this module is positioned in the computer controlled fabrication, this module is connected with laser instrument, servomotor and CCD monitoring system respectively by 3 interfaces, the welding position that is used for configuring in advance is converted to data signal and inputs to servomotor and laser instrument respectively, make the two cooperation finish welding process, and control constantly by CCD.
● portable power: by the power supply of portable battery pack realization to entire equipment.
● air cooling system: whole process is cooled off by fin and fan, has replaced traditional cooling water recirculation system.
● fixing or hand-held frock: be used for fixing soldered metallized fiber optic sensor.
Advantage of the present invention and good effect: the new pattern laser multiple spot automatic soldering method and the device that the present invention proposes a kind of metallized fiber optic sensor.This system has replaced traditional metallization optical fiber automatic soldering technique, and not only welding effect is good, the reliability height, and whole system is under the control of DSP, can realize multiple spot automation welding automatically, can operate, improve the making and the maintenance efficiency of metallization optical fiber greatly at indoor or outdoors.The control of laser instrument, dynamic focusing system and scanning galvanometer group is finished automatically by DSP fully, the locus that the operator only need import solder joint in advance gets final product, realized the welding process automation, make operating process easy, quick, workable, reduced requirement operator's professional knowledge.
[description of drawings]:
Fig. 1 is a metallized fiber optic sensor laser automatic soldering device index path;
Fig. 2 is the laser welding system control flow chart;
Fig. 3 is a Fibre Optical Sensor top lasers burn through spot welding position view;
Fig. 4 is a Fibre Optical Sensor side laser spot welding position view;
Fig. 5 is a metallization optical fiber surface laser weld position view.
Among the figure, 1, laser instrument, 2, beam expanding lens, 3, the CCD monitoring system, 4,45 degree speculums, 5, focus lamp, 6, welding tooling, 7, rotating servo mechanism, 8, the translation servo control mechanism.
[specific embodiment]:
Embodiment 1:
As shown in Figure 1, laser automatic soldering device provided by the invention comprises:
● laser instrument 1: be used to produce the laser that need weld usefulness;
● beam expanding lens 2: with the light spacing shaping that laser instrument sends, it is big that beam diameter becomes, the angle of divergence of compression laser;
● 45 degree speculums 4: multimedium film speculum is used for the laser of horizontal direction is become vertical direction;
● focus lamp 5: the optical focus mirror, be used for laser beam is assembled, increase its power density;
● by servomotor driven rotary servo control mechanism 7 and translation servo control mechanism 8, workpiece is moved horizontally and rotate;
● CCD monitoring system 3: form by imaging optical path and CCD, be positioned at focus lamp top, be used to locate monitoring with whole welding process and result;
● the DSP control module: this module is positioned in the computer controlled fabrication, this module is connected with laser instrument, servomotor and CCD monitoring system respectively by 3 interfaces, the welding position that is used for configuring in advance is converted to data signal and inputs to servomotor and laser instrument respectively, make the two cooperation finish welding process, and control constantly by CCD.
This device also comprises in addition:
● portable power: by the power supply of portable battery pack realization to entire equipment.
● air cooling system: whole process is cooled off by fin and fan, has replaced traditional cooling water recirculation system.
● fixing or hand-held frock: be used for fixing soldered metallized fiber optic sensor.
Embodiment 2: the laser weld of Fibre Optical Sensor
As shown in Figure 1, soldered Fibre Optical Sensor is placed on welding tooling position 6; The position of needs welding is inputed to the DSP control system by external input device; Dsp system control servomotor drives translation servo control mechanism 8 and rotating servo mechanism 7, Fibre Optical Sensor is moved to the position that needs welding; After the CCD monitoring workpiece arrived assigned address, DSP control laser instrument 1 sent a laser pulse as required, finishes the welding of a solder joint; DSP control servomotor moves to all the other positions that need weld with Fibre Optical Sensor and welds, until the welding of finishing whole metallized fiber optic sensor.
DSP control makes laser instrument 1 send pulse laser, and incident beam expanding lens 2 is in order to compression laser space divergence angle; Reenter and be mapped to 45 degree speculums 4, the horizontal laser light reflection is become vertical laser; Focus on soldered body surface through focus lamp 5 at last, carry out the out of focus welding according to concrete welding parameter.Wherein the effect of CCD 3 is the location of carrying out processing parts by imaging system, and whole process and processing result are observed.The control of whole process is finished by DSP, and concrete control block diagram as shown in Figure 2.
Welding method can be divided into two kinds, is respectively Fibre Optical Sensor top lasers burn through spot welding mode shown in Fig. 3 and Fibre Optical Sensor side laser spot welding mode shown in Figure 4.These two kinds of methods adopt different defocusing amounts and laser power density to finish the fixing of Fibre Optical Sensor respectively.Top lasers burn through welding defocusing amount wherein shown in Figure 3 is in 2 millimeter, and laser power density can reach 10
6W/cm
2, side laser spot welding mode defocusing amount shown in Figure 4 is then in 4～5 millimeter, and the power density of laser is then 10
4W/cm
2～10
5/ cm
2About.In operation, at first by external input equipment input bond pad locations, the DSP control module is after receiving bond pad locations, respectively to translation servo-drive system, rotating servo system and laser instrument output control signal, it is processed according to design, and in process, monitor constantly by CCD, going wrong in time feeds back to the DSP control module and adjusts.
Embodiment 3: the surface soldered of metallization optical fiber
Shown in Figure 5 is metallization optical fiber surface laser weld position view, if optical fiber surface does not have metal coating or because metallization optical fiber surface metal level is too thin, the words of directly welding with laser can cause damage.In this case at first need be at the position coating soldering paste that optical fiber surface need weld.Laser emitting and control method as shown in example 1 then, the laser out of focus is radiated at the position that needs welding, owing to absorbed the energy of laser, the soldering paste that is coated in the metallization optical fiber surface sex change that heats up rapidly, condense into solid metallic, make metallization optical fiber and its base weld together.
Claims (5)
1, a kind of laser multiple spot automatic soldering method of metallized fiber optic sensor is characterized in that this method comprises successively:
The first, will need the metallized fiber optic sensor that welds by frock or adopt hand-held mode to be placed on the jig of placing on the workbench; For the optical fiber surface of the metallized fiber optic sensor that does not have metal coating, need be at exposed coating soldering paste in position to be welded;
The second, the position that will need to weld inputs to the DSP control system by external input device;
Three, dsp system control servomotor drives translation and rotary table, and the bond pad locations that needs are welded places focal position of laser, and carries out out of focus according to the defocusing amount of default;
Four, after the CCD monitoring workpiece arrived assigned address, DSP control laser instrument sent a laser pulse as required, finishes the welding of a solder joint;
Five, by the circulation in the 3rd, the 4th step, finish the welding of whole metallized fiber optic sensor.
2, method according to claim 1, the welding of the optical fiber that it is characterized in that metallizing is finished by laser, and realizes the multipoint automatic welding of many solder joints by DSP control.
3, method according to claim 1 and 2, it is characterized in that driving workpiece motion s to assigned address by DSP control servomotor, and control laser instrument and send a laser pulse, and monitor bond pad locations and last welding situation by CCD, then carry out repair welding automatically if any bad solder joint.
4, a kind of laser multiple spot automatic soldering device of realizing the described welding method of claim 1 is characterized in that this device comprises:
Laser instrument: be used to produce the laser that need weld usefulness;
Beam expanding lens: with the light spacing shaping that laser instrument sends, it is big that beam diameter becomes, the angle of divergence of compression laser;
45 degree speculums: multimedium film speculum is used for the laser of horizontal direction is become vertical direction;
Focus lamp: the optical focus mirror, be used for laser beam is assembled, increase its power density;
Servo control mechanism: the drive workpiece moves horizontally and rotates;
CCD monitoring system: form by imaging optical path and CCD, be positioned at focus lamp top, be used to locate monitoring with whole welding process and result;
The DSP control module: this module is positioned in the computer controlled fabrication, this module is connected with laser instrument, servomotor and CCD monitoring system respectively by 3 interfaces, the welding position that is used for configuring in advance is converted to data signal and inputs to servomotor and laser instrument respectively, make the two cooperation finish welding process, and control constantly by CCD;
Fix or hand-held frock: be used for fixing soldered metallized fiber optic sensor.
5, laser multiple spot automatic soldering device according to claim 4 is characterized in that this device also comprises:
Portable power: by the power supply of portable battery pack realization to entire equipment;
Air cooling system: whole process is cooled off by fin and fan, has replaced traditional cooling water recirculation system.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 200910068016 CN101502916A (en) | 2009-03-04 | 2009-03-04 | Laser multi-point automatic welding and sealing method as well as welding device of metallized fiber optic sensor |
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| CN 200910068016 CN101502916A (en) | 2009-03-04 | 2009-03-04 | Laser multi-point automatic welding and sealing method as well as welding device of metallized fiber optic sensor |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102398112A (en) * | 2010-09-15 | 2012-04-04 | 江苏透平密封高科技有限公司 | Laser welding machine suitable for brush sealing |
| CN102500919A (en) * | 2011-10-12 | 2012-06-20 | 深圳市联赢激光股份有限公司 | Dual-laser beam hybrid welding device and hybrid welding method |
| CN102607805A (en) * | 2011-12-14 | 2012-07-25 | 山东大学 | Device and method for testing divergence angle and uniformity of illumination laser by using CCD (Charge Coupled Device) |
| CN102689089A (en) * | 2011-03-23 | 2012-09-26 | 通用汽车环球科技运作有限责任公司 | Beam welding of a multi-sheet work stack having a reduced thickness feature |
| CN102909475A (en) * | 2012-11-14 | 2013-02-06 | 中天日立光缆有限公司 | Laser repair welding device for stainless steel fiber units and repair welding method thereof |
| CN103182605A (en) * | 2013-03-21 | 2013-07-03 | 常州镭赛科技有限公司 | Laser welding machine |
| CN104527053A (en) * | 2014-11-05 | 2015-04-22 | 讯创(天津)电子有限公司 | Laser multipoint automatic solder sealing method and device of three-dimensional metallization antenna cable |
| CN107414294A (en) * | 2017-08-08 | 2017-12-01 | 江苏大金激光科技有限公司 | A kind of laser-beam welding machine |
| CN107764294A (en) * | 2017-11-03 | 2018-03-06 | 中国航空工业集团公司北京长城计量测试技术研究所 | A kind of optical fiber Fabry-Perot sensor welding packaging system |
| CN108838547A (en) * | 2018-07-11 | 2018-11-20 | 云南电网有限责任公司电力科学研究院 | A kind of deflectable laser rust-removing device |
| CN109894744A (en) * | 2019-04-03 | 2019-06-18 | 瑞茂光学（深圳）有限公司 | A kind of atomic thin metal assembly fully-automatic laser welding detection method |
| CN111246964A (en) * | 2017-10-17 | 2020-06-05 | Lg电子株式会社 | Welding system and method of operating the same |
| CN113188691A (en) * | 2021-04-21 | 2021-07-30 | 上海大学 | Optical fiber Fabry-Perot sealed cavity pressure sensor and preparation method thereof |
| CN113634894A (en) * | 2021-08-30 | 2021-11-12 | 中南大学 | Automatic optical fiber tube penetrating and packaging device and using method thereof |
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2009
- 2009-03-04 CN CN 200910068016 patent/CN101502916A/en active Pending
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102398112A (en) * | 2010-09-15 | 2012-04-04 | 江苏透平密封高科技有限公司 | Laser welding machine suitable for brush sealing |
| CN102689089B (en) * | 2011-03-23 | 2015-10-21 | 通用汽车环球科技运作有限责任公司 | There is the bundle welding that thickness reduces the multi-sheet work stack of structural portion |
| CN102689089A (en) * | 2011-03-23 | 2012-09-26 | 通用汽车环球科技运作有限责任公司 | Beam welding of a multi-sheet work stack having a reduced thickness feature |
| CN102500919A (en) * | 2011-10-12 | 2012-06-20 | 深圳市联赢激光股份有限公司 | Dual-laser beam hybrid welding device and hybrid welding method |
| WO2013053265A1 (en) * | 2011-10-12 | 2013-04-18 | 深圳市联赢激光股份有限公司 | Dual-laser beam hybrid welding device and hybrid welding method |
| CN102607805A (en) * | 2011-12-14 | 2012-07-25 | 山东大学 | Device and method for testing divergence angle and uniformity of illumination laser by using CCD (Charge Coupled Device) |
| CN102909475A (en) * | 2012-11-14 | 2013-02-06 | 中天日立光缆有限公司 | Laser repair welding device for stainless steel fiber units and repair welding method thereof |
| CN103182605A (en) * | 2013-03-21 | 2013-07-03 | 常州镭赛科技有限公司 | Laser welding machine |
| CN104527053A (en) * | 2014-11-05 | 2015-04-22 | 讯创(天津)电子有限公司 | Laser multipoint automatic solder sealing method and device of three-dimensional metallization antenna cable |
| CN107414294A (en) * | 2017-08-08 | 2017-12-01 | 江苏大金激光科技有限公司 | A kind of laser-beam welding machine |
| CN111246964A (en) * | 2017-10-17 | 2020-06-05 | Lg电子株式会社 | Welding system and method of operating the same |
| CN107764294A (en) * | 2017-11-03 | 2018-03-06 | 中国航空工业集团公司北京长城计量测试技术研究所 | A kind of optical fiber Fabry-Perot sensor welding packaging system |
| CN107764294B (en) * | 2017-11-03 | 2020-01-10 | 中国航空工业集团公司北京长城计量测试技术研究所 | Fusion welding packaging device for optical fiber Fabry-Perot sensor |
| CN108838547A (en) * | 2018-07-11 | 2018-11-20 | 云南电网有限责任公司电力科学研究院 | A kind of deflectable laser rust-removing device |
| CN109894744A (en) * | 2019-04-03 | 2019-06-18 | 瑞茂光学（深圳）有限公司 | A kind of atomic thin metal assembly fully-automatic laser welding detection method |
| CN113188691A (en) * | 2021-04-21 | 2021-07-30 | 上海大学 | Optical fiber Fabry-Perot sealed cavity pressure sensor and preparation method thereof |
| CN113188691B (en) * | 2021-04-21 | 2023-01-20 | 上海大学 | Optical fiber Fabry-Perot sealed cavity pressure sensor and preparation method thereof |
| CN113634894A (en) * | 2021-08-30 | 2021-11-12 | 中南大学 | Automatic optical fiber tube penetrating and packaging device and using method thereof |
| CN113634894B (en) * | 2021-08-30 | 2022-04-22 | 中南大学 | Automatic optical fiber tube penetrating and packaging device and using method thereof |
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Open date: 20090812 |