A kind of band coating measurer for thickness of round wire bond and measuring methodTechnical field
The present invention relates to a kind of measuring device and measuring method, the band coating measurer for thickness of particularly a kind of round wire bond andMeasuring method.
Background technology
On photovoltaic module circular welding and flat rectangle welding, welding table are broadly divided into for connecting the welding of cell pieceFace helps the important parameter that welding coat thickness is welding, which determines weld strength, soldering reliability, cell piece fragmentRate.The thickness measurement of welding becomes the essential items for inspection of every batch of welding.
For rectangle welding, since its coating layer thickness direction is vertical with welding in-plane, using common coating thickness measuringInstrument can accurately and easily draw measurement result.
For circle wire bond band, since its base material is cylinder matrix, it is impossible to be directly measured using coating thickness detector.OneAs be measured using metallographic method, but metallographic method detecting step is more, and time-consuming, a metallographic sample needs by cutting, fixing,Prepare inlay, inlay, grinding and polishing, measurement, although several samples to be tested can be embedded in a mold during actual measurementIn synchronize measure, even if but so remain on more time-consuming, the detection time of general metallographic sample takes around 70 minutes.More and be substantially manual operations in the process of metallographic detection, each process is likely to introduce error, for example cuts faceWith sample out of plumb, cut and cause section deformation, inlay rear sample and there is no after substantially vertical, grinding and polishing metallographic sample bottom surface not waterFlat, inlay, which is not filled up completely, causes tin layers profile deformation and the manual line finally for shooting picture after grinding and polishing to be surveyedAmount etc..Therefore, metallographic method be it is a kind of to the exigent method of testing staff, it is necessary to there is skilled operation testing result that can just haveGood stability.
The content of the invention
In order to overcome the above-mentioned deficiencies of the prior art, the object of the present invention is to provide a kind of round band coating thickness of wire bond to surveyMeasure device and measuring method.
In order to achieve the above objectives, the technical solution adopted by the present invention to solve the technical problems is：
A kind of band coating measurer for thickness of round wire bond, including：
Welding fixed column is linear pattern regular polygon cylinder, and perforative circular hole is equipped at cylinder central axis, describedThe shaft of welding fixed column is equipped with a slit connected with circular hole, and round wire bond band one end to be measured is placed to through the slitIn the circular hole；
Coating thickness gauge, including measuring table, measuring probe, the welding fixed column is placed on the measuring tableOn, welding fixes mast axis and is arranged in parallel with measuring table plane, and circle wire bond band part to be measured places on the measurement probe；
Welding briquetting, surface are equipped at least one limiting slot, and the welding briquetting is arranged on the measuring probe, instituteIt states limiting slot and matches setting with the circle wire bond band on measuring probe.
The present invention can quickly detect the coating layer thickness of round wire bond band, measuring method is simple, step compared to the prior artIt is few, it is not easy to introduce error, measurement accuracy can reach ± 0.1 μm, and the long-time stability of measuring device are high, and coating thickness detector can be withMeasurement data is quickly exported, is conducive to the statistical analysis of data.
Further, the welding fixed column end face has welding hold-down mechanism, and the welding hold-down mechanism includes pinAxis, pressure ring, compression spring, the axis pin are vertically set on welding fixed column end face, and the pressure ring, compression spring are set in the axis pinOn, pressure ring is pressed on welding fixed column end face by the compression spring.
Further, the pressure ring and the contact surface of welding fixed column are equipped with and the circle matched arc groove of wire bond band.
Using the above preferred scheme, round wire bond band can be preferably fixed compared with the position of welding fixed column, carriedHigh measurement result precision.
Further, the polygon cylinder face of the welding fixed column is equipped with the mark being ranked up to each cylinder faceNumber, the label counter-cylinder face is into etat lacunaire.
Using the above preferred scheme, gauger can be helped to measure in order, prevents confusion, it is ensured that measurement result is accurate.
Further, the welding briquetting is equipped with a plurality of limiting slot, each limiting slot openings of sizes and groove depth and different ruleThe circle wire bond band of lattice matches.
Further, the opening of the limiting slot is identical with groove depth size, and the opening size of limiting slot is than matchedThe big 0.08-0.15mm of circle wire bond band diameter.
Using the above preferred scheme, the position of wire bond band, measurement midpoint easy to find, /V channel opening can be justified with regulationSize is slightly larger than circle wire bond band diameter, it can be ensured that circle wire bond band can keep being freely rotated in limiting slot.
Further, the measuring table is equipped with a limited block, and welding fixed column is placed on the limited block, describedLimited block can limit the end position of welding fixed column.
Using the above preferred scheme, circle wire bond band measurement position can be kept to keep stablizing.
Further, the limited block bottom is additionally provided with translation mechanism, which can drive limited block to consolidate along weldingFixed column axis direction translates.
Using the above preferred scheme, the painting of length direction on different position can be measured circle wire bond with stably translationalLayer thickness.
A kind of band coating method for measuring thickness of round wire bond, comprises the following steps：
Step 1, slit of the round wire bond to be measured with one end through welding fixed column is placed in circular hole, by round wire bond to be measuredThen a bit of round wire bond band bending of exposing is allowed to be fitted in weldering by a bit of exposing welding fixed column end face with one endEnd face with fixed column；
Step 2, welding fixed column is placed on the measuring table of coating thickness gauge, round wire bond band to be measured is anotherEnd places on the measurement probe；
Step 3, welding briquetting is placed on the measurement probe, round wire bond band to be measured is made to be limited in the limiting slot of welding briquettingIt is interior；
Step 4, measurement point position is adjusted in the operation interface of coating thickness gauge to put, it is made to fall in sample to be testedBetween, focal length is adjusted, is measured after clear；
Step 5, along central axis Spin welding band fixed column, each cylinder of welding fixed column polyhedron is made to be sequentially placed into measurement flatOn platform, rotation every time is measured by step 4, until all cylinders are all measured；
Step 6, the coating thickness data of round wire bond one week each Along ent of band can be obtained from coating thickness gauge.
Using the above preferred scheme, the coating layer thickness of round wire bond band can be quickly detected, measuring method is simple, stepIt is few, it is not easy to introduce error, measurement accuracy can reach ± 0.1 μm, and the long-time stability of measuring device are high, and coating thickness detector can be withMeasurement data is quickly exported, is conducive to the statistical analysis of data.
Further, circle wire bond band can also be translated, measure coating of the round wire bond with different position by translation mechanismThickness data.
Using the above preferred scheme, the painting of length direction on different position can be measured circle wire bond with stably translationalLayer thickness.
Description of the drawings
It in order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existingThere is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only thisSome embodiments of invention, for those of ordinary skill in the art, without creative efforts, can be withOther attached drawings are obtained according to these attached drawings.
Fig. 1 is the structure diagram of one embodiment of the present invention；
Fig. 2 is a kind of structure diagram of embodiment of welding fixed column in the present invention；
Fig. 3 is a kind of structure diagram of embodiment of welding briquetting in the present invention；
Fig. 4 is the structure diagram of welding fixed column another embodiment of the present invention.
Number and the title of the corresponding component represented by letter in figure：
1- welding fixed columns；11- circular holes；12- slits；13- axis pins；14- pressure rings；15- compression springs；21- measuring tables；22-Measuring probe；3- welding briquettings；31- limiting slots；4- justifies wire bond band；5- limited blocks.
Specific embodiment
Below in conjunction with the attached drawing in the embodiment of the present invention, the technical solution in the embodiment of the present invention is carried out clear, completeSite preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, instead of all the embodiments.It is based onEmbodiment in the present invention, those of ordinary skill in the art are obtained every other without creative effortsEmbodiment belongs to the scope of protection of the invention.
In order to reach the purpose of the present invention, one embodiment of the present invention is：As shown in Figs. 1-3, a kind of round wire bond bandCoating thickness measurement device, including：
Welding fixed column 1 is linear pattern regular polygon cylinder, perforative circular hole 11 is equipped at cylinder central axis,The shaft of welding fixed column 1 is equipped with a slit 12 connected with circular hole 11, and round 4 one end of wire bond band to be measured is pacified through slit 12It is put into circular hole 11；
Coating thickness gauge, including measuring table 21, measuring probe 22, welding fixed column 1 is placed on measuring table 21On, 1 axis of welding fixed column is arranged in parallel with measuring table 21, and 4 part to be measured of circle wire bond band is placed on measuring probe 22；
Welding briquetting 3, surface are equipped at least one limiting slot 31, and welding briquetting 3 is arranged on measuring probe 22, /VSlot 31 matches setting with the circle wire bond band 4 on measuring probe 22.
Wherein coating thickness gauge is the instrument that can quickly measure rectangle welding coating layer thickness in the prior art, you canCan be laser coatings calibrator or X-ray coating thickness measuring quickly to measure the thickness of coating on direction of illuminationInstrument, the present invention are not limited.
The beneficial effects of the invention are as follows：The coating layer thickness of round wire bond band 4 can be quickly detected, measuring method is simple, stepIt is few, it is not easy to introduce error, measurement accuracy can reach ± 0.1 μm, and the long-time stability of measuring device are high, and coating thickness detector can be withMeasurement data is quickly exported, is conducive to the statistical analysis of data.
As shown in figure 4, in other embodiments of the present invention, 1 end face of welding fixed column has welding compacting machineStructure, the welding hold-down mechanism include axis pin 15, pressure ring 14, compression spring 13, and axis pin 15 is vertically set on 1 end face of welding fixed columnOn, pressure ring 14, compression spring 13 are set on axis pin 15, and pressure ring 14 is pressed on 1 end face of welding fixed column by compression spring 13；Pressure ring 14 withThe contact surface of welding fixed column 1 is equipped with and circle 4 matched arc groove of wire bond band.Using the advantageous effect of above-mentioned technical proposalIt is：Position of the round wire bond band 4 compared with welding fixed column 1 can be preferably fixed, improves measurement result accuracy.
In other embodiments of the present invention, the polygon cylinder face of welding fixed column 1 is equipped with for each columnThe label that dignity is ranked up, the label counter-cylinder face is into etat lacunaire.It is using the advantageous effect of above-mentioned technical proposal：Gauger can be helped to measure in order, prevent confusion, it is ensured that measurement result is accurate.
In other embodiments of the present invention, welding briquetting 3 is equipped with a plurality of limiting slot 31, and each limiting slot 31 is openThe circle wire bond band of size and groove depth and different size matches；The opening of limiting slot 31 is identical with groove depth size, limiting slot 31Opening size is bigger 0.08-0.15mm than matched circle wire bond band diameter.It is using the advantageous effect of above-mentioned technical proposal：It canWith the position of regulation circle wire bond band, measurement midpoint easy to find, /V trough aperture dimension is slightly larger than circle wire bond band diameter, can be trueProtecting circle wire bond band can keep being freely rotated in limiting slot.
In other embodiments of the present invention, measuring table 21 is equipped with a limited block 5, and welding fixed column 1 is placedOn limited block 5, limited block 5 can limit the end position of welding fixed column 1.Using the advantageous effect of above-mentioned technical proposalIt is：Circle wire bond band 4 can be kept to measure position to keep stablizing.
In other embodiments of the present invention, 5 bottom of limited block is additionally provided with translation mechanism, which can driveLimited block 5 is translated along 1 axis direction of welding fixed column.It is using the advantageous effect of above-mentioned technical proposal：It can be to circle wire bond bandStably translational is to measure the coating layer thickness of different position on length direction.
A kind of band coating method for measuring thickness of round wire bond, comprises the following steps：
Step 1, slit of the round wire bond to be measured with one end through welding fixed column is placed in circular hole, by round wire bond to be measuredThen a bit of round wire bond band bending of exposing is allowed to be fitted in weldering by a bit of exposing welding fixed column end face with one endEnd face with fixed column；
Step 2, welding fixed column is placed on the measuring table of coating thickness gauge, round wire bond band to be measured is anotherEnd places on the measurement probe；
Step 3, welding briquetting is placed on the measurement probe, round wire bond band to be measured is made to be limited in the limiting slot of welding briquettingIt is interior；
Step 4, measurement point position is adjusted in the operation interface of coating thickness gauge to put, it is made to fall in sample to be testedBetween, focal length is adjusted, is measured after clear；
Step 5, along central axis Spin welding band fixed column, each cylinder of welding fixed column polyhedron is made to be sequentially placed into measurement flatOn platform, rotation every time is measured by step 4, until all cylinders are all measured；
Step 6, the coating thickness data of round wire bond one week each Along ent of band can be obtained from coating thickness gauge.
It is using the advantageous effect of above-mentioned technical proposal：The coating layer thickness of round wire bond band, measuring method can quickly be detectedSimply, step is few, it is not easy to introduce error, measurement accuracy can reach ± 0.1 μm, and the long-time stability of measuring device are high, coatingCalibrator can quickly export measurement data, be conducive to the statistical analysis of data.
Below to the preferable electroplating welding wire of layer thickness uniformity, measuring device of the present invention (welding fixed column is respectively adoptedFor dodecagon cylinder) and metallographic method progress coating thickness determination, it is as follows to obtain data：
| Sequence number | Measuring device (μm) of the present invention | Metallographic method (μm) |
| 1 | 12.1 | 10.93 |
| 2 | 12.4 | 11.32 |
| 3 | 12.2 | 10.7 |
| 4 | 12.4 | 9.81 |
| 5 | 12.1 | 11.11 |
| 6 | 12.2 | 12.51 |
| 7 | 12.2 | 12.54 |
| 8 | 12.3 | 12.76 |
| 9 | 12.3 | 13.6 |
| 10 | 12.1 | 13.73 |
| 11 | 12.2 | 10.1 |
| 12 | 12.2 | 8.13 |
| Maximum | 12.4 | 13.73 |
| Minimum value | 12.1 | 8.13 |
| Average | 12.2 | 11.43 |
It can be seen that from upper table data and more matched with plating welding characteristic using measuring device measurement result of the present invention,Measurement result is stablized accurate；Metallographic method measured value is unstable, and deviation is big, and measurement result is inaccurate.
The above embodiments merely illustrate the technical concept and features of the present invention, and its object is to allow ordinary skill peopleMember can understand present disclosure and be carried out, it is not intended to limit the scope of the present invention, it is all according to the present inventionThe equivalent change or modification that Spirit Essence is made should all cover within the scope of the present invention.