CN104972224B - A kind of automatic tin soldering method - Google Patents
A kind of automatic tin soldering method Download PDFInfo
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- CN104972224B CN104972224B CN201410138982.0A CN201410138982A CN104972224B CN 104972224 B CN104972224 B CN 104972224B CN 201410138982 A CN201410138982 A CN 201410138982A CN 104972224 B CN104972224 B CN 104972224B
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Abstract
The invention discloses a kind of automatic tin soldering method, the characteristic utilizing copper wire that the absorbance of laser is increased along with optical maser wavelength and to reduce, choose the laser of one section of specific wavelength, irradiate the scolding tin weld of copper wire, make the insulating barrier Automatic-falling on copper wire and weld with scolding tin perfection；The enforcement of the present invention makes to need not in welding process traditional bonding machine, soldering tin bar, Colophonium, and the weld after welding, also without being carried out, improves production efficiency, the problem simultaneously reducing the copper wire fusing rate brought because of traditional welding, environmental protection, economy.
Description
Technical field
The present invention relates to welding field, use the welding method of scolding tin particularly with regard to accurate device.
Background technology
At present, smart mobile phone market share amount is constantly expanding, and corresponding vibrating motor for mobile phone market share amount is also increasing；Meanwhile, mobile phone is towards miniaturization, and ultrathin direction is developed, and the paster motor being used for it is also proposed new demand: the most ultra-thin superminiature, it is possible to equally realize standardized production manufacture with other electronic devices and components.To this end, according to market demands, motor volume has been accomplished, and industry is minimum, thickness I as little as 3.4mm.But, the thing followed is that a series of technical difficult point needs to break through, the conductor lines footpath minimum (only 0.025mm) being because using the most prominent, the following result caused under traditional mode of production.
Traditional welding manner is all to use manually welding, welding process needs use electric cautery, Trimeresurus mucrosquamatus (Cantor)., the equipment such as solder, and human weld must be used in welding process, and the object such as mobile phone electro-motor being soldered belongs to accurate device, therefore in welding process, the control of temperature and the assurance of pad are proposed the highest demand, and because the temperature of electric cautery belongs to constant, can not accurate control, in the uncertain factor caused plus manual operation, substantial amounts of welding situation excessively can be caused, that is pad is because weld interval is long or temperature too high causing is soldered the situation that breaking occurs in copper wire.
In order to control the series of problems occurred in welding process; the problem particularly improving copper wire broken string; the most just can only reduce the scolding tin temperature of pad; because along with the dissolution rate rising high-copper of scolding tin temperature is also stepped up, but it is because being soldered point and has dielectric film to protect, if reducing the temperature of scolding tin in welding; dielectric film can not be removed; can not reach again welding effect, the temperature therefore welded is to reduce, and temperature can not reduce and the most fundamentally can't resolve problem.
Simultaneously as use the mode of human weld, need substantial amounts of man power and material just can meet the needs of production, substantially one sealing wire needs more than 6 people, and after welding, soldered point be there is also the problem of cleaning, in cleaning process, produced Colophonium and scolding tin and water also can be to environments.It is thus desirable to research and develop a kind of new welding method to replace traditional scolding tin welding method.
Laser, being a kind of widely-known technique, along with the development of modern industrial technology, laser has been employed for every field, can produce substantial amounts of heat in particular with laser to weld object, soldered object is typically also the object because using normal welding means effectively not weld.
Summary of the invention
It is an object of the invention to provide a kind of automatic tin soldering method, solve at present in the welding process of accurate device, be particularly soldered brass wire diameter the least in the case of the situation of welding process interrupt line that occurs；
Further objective is that in welding process, realize automatic welding, it is to avoid the industrial pollution occurred during human weld, improve welding efficiency.
The technical solution used in the present invention: a kind of automatic tin soldering method, described tin-soldering method includes two steps:
Step one: placed by the rotor winding copper wire, adjusts laser head, determines weld locations, open lasing light emitter, the wavelength of regulation laser, make at the copper wire that laser is radiated on rotor substrate, copper wire absorbs laser and produces heat, makes the dielectric film on copper wire automatically split；
Step 2: laser continues to be radiated at the junction of copper wire and the substrate removing dielectric film, copper wire absorbs the heat of laser generation to be made the scolding tin fast melt on substrate and merges with the copper wire on substrate, completes welding.
In technique scheme, the wave-length coverage of described laser is 234 nm～500nm.
In technique scheme, the time that described laser irradiates is 0.05ms.
In technique scheme, the substrate of described rotor is coated with one layer of soldering-tin layer.
In the present invention, have employed laser welding technology, instead of traditional manual welding, be analyzed from laser itself, it is understood that metal is the wavelength change with light to the absorbance of laser, the wavelength of laser is the longest, and metal is the lowest to the absorbance of laser, with reference to the formula in the laser absorption rate of the metal material<research>with calculate, as shown in Figure 2, the absorbance of laser is increased with wavelength and reduces by copper, and wavelength is when 234～500nm, and absorbance can reach more than 50%.
If continuing to reduce the wavelength of laser, although the copper absorbance to laser can be improved, but being because absorbing too many laser can cause copper cash to be rapidly heated, too high temperature can make copper cash corrode in solder liquid, the problem the same with during manual welding occurs, therefore the wavelength of laser, and the time that laser irradiates must be controlled.Same, if the wavelength of laser is the shortest, necessarily must reduce the time that laser irradiates, and the control time of laser is typically all the shortest, the control time is proposed the highest requirement is that current industrial equipment is inaccessiable.Therefore this programme is selected optical maser wavelength between 234 nm～1000nm.
Wavelength is between 500 nm～1000nm, copper is the lowest to the absorbance of light, when wavelength is at 532nm, the heat that the laser of Copper uptakie produces can make the dielectric film being coated on copper wire burst out moment, and copper wire will not be injured, and wavelength is when 500 nm～532nm, the heat of copper transient absorption does not reaches the temperature melting scolding tin yet, and therefore this wavelength period is to slough the best opportunity of dielectric film.
When wavelength is in 234 nm～500nm, along with the absorbance of laser is increased by copper, the temperature of copper wire is climbed to more than 200 degrees Celsius, and this temperature section can make rapidly scolding tin melt, and the tin soldering liquid after thawing by copper wire Bao Rong together, i.e. completes welding.In this process, wavelength be the laser beam emitting device of 234 nm be the minimum wavelength that can reach in current laser welding machine, and be the irradiation time that must control laser in welding process, the time is set to 0.05ms, if the amount of heat that overlong time produces will also result in copper cash fusing.
In sum, owing to have employed technique scheme, the invention has the beneficial effects as follows: improve traditional manual welding process, soldered place has only to carry out twice laser irradiation can complete welding, and by the optical maser wavelength during controlling and time, it is effectively controlled the temperature being soldered place so that dielectric film Automatic-falling on copper cash also perfectly merges with scolding tin, it is to avoid because the copper cash of the too high appearance of temperature fuses.
Further advantage is that by implementing this programme, the automatic production on production line can be completed, by using corresponding automation equipment, it is only necessary to a people just can control, and greatly reducing the input of human resources, improves production efficiency.
Further advantage is that, traditional manual welding, because using soldering tin bar and Colophonium, substantial amounts of air pollutants can be produced, environment can be polluted by the residue that soldered place is cleaned after terminating by welding simultaneously, and the welding of this programme, will not relate to use soldering tin bar and Colophonium, also without being carried out simultaneously after welding terminates, therefore the welding engineering of this programme is essentially without producing environment and human harmful substance.
Accompanying drawing explanation
Examples of the present invention will be described by way of reference to the accompanying drawings, wherein:
Fig. 1 is the partial enlarged drawing of motor rotor；
Fig. 2 is the metal absorbance chart to laser.
Detailed description of the invention
All features disclosed in this specification, or disclosed all methods or during step, in addition to mutually exclusive feature and/or step, all can combine by any way.
As shown in Fig. 1, present invention welding to as if electro-motor on mobile phone or mobile digital product, the core component of motor is exactly the rotor of the inside, it is wrapped substantial amounts of thin copper wire by rule above each rotor, the surface of copper wire is all covered with one layer of dielectric film, and the soldered place 1 in Fig. 1 is that thin copper wire is wrapped on the substrate of rotor, in the present invention, do corresponding process on substrate, the surface of substrate has had been covered with one layer of scolding tin before being wound around copper wire.After winding thin copper wire, just can directly weld.
Because the copper wire of welding is quite thin in the present invention, diameter only has 0.025mm, and in order to preferably control welding precision, the present invention has selected and current existing wavelength can be reduced to minimum laser-beam welding machine, welds soldered place.
Ready rotor is put in automatic welding equipment, the position of the laser head of regulation laser machine, determine pad, the relative position of regulation rotor, fixed rotor；Position according to the position of Laser Welding contact, suitably regulation rotor with laser head, it is therefore desirable to become 45 degree of angles, the observation after facilitating operator to weld；It is ready to start welding.
During welding, the wavelength of laser to control between 234 nm～523nm, wavelength period between 500 nm～523nm is the insulating barrier Automatic-falling on copper wire, and the wavelength period between 234 nm～500nm melts welding for scolding tin, the time of welding to control in 0.05ms, if beyond this time, the heat that copper cash absorbs can cause copper wire to be corroded in tin soldering liquid, cause last copper cash drop.Therefore the laser that the present invention selects wavelength to be 234 nm～500nm, soldered place is disposably welded, temperature can be increased to scolding tin in moment and melt the temperature needed by the laser of this wavelength, and this temperature also can make dielectric film oneself take off moment simultaneously, finally completes welding.
Using the present invention to carry out factory work, a production line has only to a set of automatic welding equipment, not Trimeresurus mucrosquamatus (Cantor)., not tin soldering machine, not solder, and a workman is the most operable；Maintain the cleaning after rotor scolding tin after welding, it is no longer necessary to cleaning machine or rinse water, decrease the discharge of waste water, more environmentally friendly, improve work efficiency, saved production cost, huge economic benefit can be brought.
The invention is not limited in aforesaid detailed description of the invention.The present invention expands to any new feature disclosed in this manual or any new combination, and the arbitrary new method that discloses or the step of process or any new combination.
Claims (1)
1. an automatic tin soldering method, is characterized by that described tin-soldering method includes two steps:
Step one: placed by the rotor winding copper wire, adjusts laser head, determines weld locations, open lasing light emitter, the wavelength of regulation laser, make at the copper wire that laser is radiated on rotor substrate, copper wire absorbs laser and produces heat, makes the dielectric film on copper wire automatically split；
Step 2: laser continues to be radiated at the junction of copper wire and the substrate removing dielectric film, copper wire absorbs the heat of laser generation to be made the scolding tin fast melt on substrate and merges with the copper wire on substrate, completes welding；
One layer of soldering-tin layer it is coated with on the substrate of described rotor；
The wave-length coverage of described laser is 234 nm～500nm,
The time that described laser irradiates is 0.05ms.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410138982.0A CN104972224B (en) | 2014-04-09 | 2014-04-09 | A kind of automatic tin soldering method |
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| CN201410138982.0A CN104972224B (en) | 2014-04-09 | 2014-04-09 | A kind of automatic tin soldering method |
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| CN104972224A CN104972224A (en) | 2015-10-14 |
| CN104972224B true CN104972224B (en) | 2016-09-14 |
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| CN201410138982.0A Active CN104972224B (en) | 2014-04-09 | 2014-04-09 | A kind of automatic tin soldering method |
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| CN108687442B (en) * | 2017-03-30 | 2021-10-01 | 法拉第未来公司 | System and method for welding |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| NL8501258A (en) * | 1985-05-03 | 1986-12-01 | Philips Nv | ELECTRIC MACHINE. |
| EP0410211A1 (en) * | 1989-07-28 | 1991-01-30 | Siemens Aktiengesellschaft | Process for producing an electrically conductive connection between enamelled copper wires and terminals |
| DE10002703B4 (en) * | 2000-01-22 | 2006-12-07 | Robert Bosch Gmbh | Method for producing an electrically conductive connection by means of laser radiation |
| CN100447909C (en) * | 2006-07-31 | 2008-12-31 | 华中科技大学 | Laser microconnecting method for manufacturing wire wound potentiometer terminal |
| CN102934530A (en) * | 2010-06-04 | 2013-02-13 | 揖斐电株式会社 | Method for manufacturing wiring board |
| JP2013048065A (en) * | 2011-08-29 | 2013-03-07 | Sumida Corporation | Leader line connection method |
| CN102496453A (en) * | 2011-12-22 | 2012-06-13 | 德宙佑电电子(深圳)有限公司 | Method for processing transformer before tin soldering |
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Address after: 621000 Mianyang province Sichuan City Feiyun Avenue East No. 261 Patentee after: SICHUAN AWA SEIMITSU ELECTRIC Co.,Ltd. Address before: 621000 Mianyang province Sichuan City Feiyun Avenue East No. 261 Patentee before: SICHUAN ANHE PRECISION ELECTRONIC ELECTRICAL APPLIANCES Co.,Ltd. |
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Denomination of invention: An automatic soldering method Effective date of registration: 20210623 Granted publication date: 20160914 Pledgee: Agricultural Bank of China Limited by Share Ltd. Mianyang Fucheng branch Pledgor: SICHUAN AWA SEIMITSU ELECTRIC Co.,Ltd. Registration number: Y2021980005174 |
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Date of cancellation: 20220801 Granted publication date: 20160914 Pledgee: Agricultural Bank of China Limited by Share Ltd. Mianyang Fucheng branch Pledgor: SICHUAN AWA SEIMITSU ELECTRIC Co.,Ltd. Registration number: Y2021980005174 |
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