CN1331632C - Noise free highly effective electromagnetic pump soft soldered single/double peak generator - Google Patents
Noise free highly effective electromagnetic pump soft soldered single/double peak generator Download PDFInfo
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- CN1331632C CN1331632C CNB2003101058209A CN200310105820A CN1331632C CN 1331632 C CN1331632 C CN 1331632C CN B2003101058209 A CNB2003101058209 A CN B2003101058209A CN 200310105820 A CN200310105820 A CN 200310105820A CN 1331632 C CN1331632 C CN 1331632C
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- wave crest
- pump
- outer shroud
- pump chamber
- noiselessness
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Abstract
The present invention relates to a soldering single / double wave crest generator of a noiselessness highly effective electromagnetic pump, which belongs to the field of weld; the soldering single / double wave crest generator is suitable for an automatic welding device of a printed circuit board in surface mount technology (SMT). The soldering single / double wave crest generator is composed of a solder box (7), a double wave crest nozzle (10) system and double noiselessness high-efficiency electromagnetic pumps; the soldering single / double wave crest generator can effectively eliminate shadow regions formed by the block of gaseous shadowing surface mounted components and devices (SMC SMD ) generated in SMT solder; and the soldering single / double wave crest generator has the advantages of high electric pump efficiency, no rotating part, no abrasion, convenient replacement of a mechanical pump type wave crest generator, easy manufacture, capability of obtaining smooth wave crests and 40mm super high wave crests in whole wave crest width. The soldering single / double wave crest generator reduces the generation of oxidation tin dross.
Description
The invention belongs to electromagnetic pump liquor charging body technique field, relate to a kind of noiselessness high-efficiency electromagnetic pumping soft brazing with liquid metal single/double wave crest generator, be particularly related to the automatic dual waves welding equipment of wiring board (PCB), and in the dual waves automatic welding device of the printed wiring board of surface mounting technique (SMT), the induction noiselessness high-efficiency electromagnetic pump soft brazing with liquid metal single/double wave crest generator of pumping liquid metal soft solder.
Background technology; the soft brazing with liquid metal electromagnetic pump of patent US-3797724 and CN8620924U; all belong to conduction pump; this pump is subjected to the influence of conductive electric current loop resistance very big; and loop resistance is subjected to the influence of liquid high-temperature metal oxidizing slag and change; thereby the instability that causes crest; even cause crest height to rise and fall sharply and quickly; the scheme that addresses this problem at present is that high-temp antioxidizing oil guard system is set; require high temperature oil not carbonization of long-term work under 250-300 Celsius ℃ degree non-volatile; do not decompose; this high-temp antioxidizing oil; not only cost an arm and a leg; and the source of goods is in short supply; patent CN93246899/3 and CN91058162A etc. all belong to the liquid metal electromagnetic pump of single-phase electromagnetic induction single/double wave crest; its principle is a magnetic path difference of utilizing electromagnet inner and outer ring magnetic circuit path length difference to produce; thereby produce the phase difference that electromagnetic induction distributes on inner and outer ring; form the induction type electromagnetic force; electromagnetic force is pointed to; point to lagging phase by leading phase; adopt this scheme; solved conduction pump because the influence of liquid high-temperature metal oxidizing slag causes the crest instability problem; but a disadvantage of such electromagnetic pump is; energy conversion efficiency is low; because what utilize is the magnetic path difference, form phase difference, thereby phase difference is limited; the major part of determining is useless impulsive magnetic field; electromagnetic force is little, and most of electric energy is converted to eddy current heat energy and line bag resistance heating, thereby can't obtain high crest and big crest width.Patent CN9623662239 electromagnetic pump double wave crest generator, electromagnetic pump must be installed in the both sides of solder bath respectively, so that alleviating inductance coupling disturbs, the peak generator volume is big like this, be difficult to exchange with the mechanical pump peak generator, simultaneously because electromagnetic induction is asymmetric, inefficiency, operating current 20-40 ampere (electromagnetic pump operating current of the present invention has only the 5-6 ampere), operating noise is big, vibrations are serious, and eddy current heating negative effect has a strong impact on effective control of tin furnace temperature, can't obtain the thrust of superelevation crest.
Purpose of the present invention, provide a kind of asynchronous induction noiselessness high-efficiency electromagnetic pump soft brazing single/double wave crest generator, it can not only be eliminated fully and exist in (SMT) soft brazing, because the gas shield brazing filler metal district that thermal decomposition produced of the alite paste that scaling powder and surface element (SMC) and surface device (CMD) are used, cause skip welding and leak the weldering phenomenon, and since the efficient of induction type noiselessness high-efficiency electromagnetic pump than the present high 8-10 of electromagnetic pump efficient doubly, crest height 40mm, width can reach 400mm, crack width 12mm can drive out of effectively and cover gas, eliminates skip welding and CMC, the shadow region of CMD reaches the specification requirement of SMT soft brazing.And can well exchange with the mechanical pump peak generator.
Content of the present invention comprises noiselessness high-efficiency electromagnetic pump, welding reservoir, pump chamber, compositions such as return duct is characterized in that, noiselessness high-efficiency electromagnetic pump is by outer shroud iron core (2), interior ring (3) unshakable in one's determination, excitatory line bag (9) and liquid metal pump chamber (8), return duct (4), compensation (6) unshakable in one's determination, flow deflector (5), fin compositions such as (1).In excitatory line bag (9), insert single-phase on request, the alternating voltage of two-phase or three-phase or heterogeneous certain amplitude and certain frequency, similar Principle of Electric Engine, in outer shroud iron core (2), pump chamber (8), liquid metal in the pump chamber, between the interior ring (3) unshakable in one's determination, produce rotating excitation field, liquid metal is cutting magnetic line in rotating excitation field, produce induced-current, inductive current direction is perpendicular to magnetic direction, parallel with pump chamber (8) axis direction, according to Faraday's law, current is subjected to Lorentz force in magnetic field, direction is perpendicular to the magnetic direction and the sense of current, therefore produce liquid metal in pump chamber (8) around axis rotation, installation spirality flow deflector (5) between pump chamber (8) and interior ring iron core (3), the liquid metal that rotatablely moves is changed into screw, realize the purpose of pumping liquid metal.
Now be described further in conjunction with the accompanying drawings with preferred embodiment:
Accompanying drawing 1 also is embodiment.A kind of asynchronous induction type noiselessness high-efficiency electromagnetic pump soft brazing single/double wave crest generator of design is by noiselessness high-efficiency electromagnetic pump, welding reservoir, pump chamber, compositions such as return duct is characterized in that, noiselessness high-efficiency electromagnetic pump is by outer shroud iron core (2), interior ring (3) unshakable in one's determination, excitatory line bag (9) and liquid metal pump chamber (8), return duct (4), compensation (6) unshakable in one's determination, flow deflector (5), fin compositions such as (1).The outer shroud iron core (2) of noiselessness high-efficiency electromagnetic pump is annular laminated core, on outer shroud iron core (2), be evenly equipped with wire casing, excitatory line bag (9) is embedded in the wire casing, pump chamber (8) passes the interior ring of outer shroud iron core (2), ring (3) unshakable in one's determination is fixed in the pump chamber (8) in the laminate patch, the interior ring of ring (3) unshakable in one's determination in return duct (4) passes, one end is communicated with pump chamber, the other end is communicated with welding reservoir (7), and flow deflector (5) is between the pump chamber (8), fin (1) is fixed on the outer shroud of outer shroud iron core (2), form shell mechanism, laminate patch compensation (6) unshakable in one's determination is fixed on pump chamber (8) afterbody, can penetrate the interior ring of outer shroud iron core (2) simultaneously again.In the side of welding reservoir (7) two independently pump chamber (8) and handful row can be arranged, also can hold in both hands two opposites that are listed in welding reservoir (6), or two adjacent surfaces, comprise the bottom.Pump chamber (8) and return duct (4) are made of stainless steel tube or titanium alloy tube, and flow deflector (5) prepares with titanium alloy or stainless steel material, and interior ring (3) unshakable in one's determination can overcoat titanium alloy tube or stainless steel tube.Outer wrapped mica tape of excitatory line bag (9) lead or Kapton, heatproof reaches 260-300 ℃, the distribution principle of excitatory line bag (9) in outer shroud iron core (2) wire casing, similar coil of stator of motor distribution principle, after excitatory line bag (9) is connected three-phase or single phase alternating current power supply, in outer shroud iron core (2) and interior ring (3) unshakable in one's determination and liquid metal solder between the two, produce rotating excitation field.Excitatory line bag (9) is embedded in the wire casing of outer shroud iron core (2), fin shell (1) is sleeved on the outer shroud of outer shroud iron core (2), constitute an integral body, this integral body can go up on the compensation iron core (6) that reaches pump chamber (8) afterbody at pump chamber (8) and move back and forth, and regulates the electromagnetic push size.The interior ring cavity of ring (3) unshakable in one's determination in return duct (4) can pass, an end is communicated with pump chamber (8), and the other end is communicated with welding reservoir (7), also can directly draw from pump chamber (8) afterbody, directly is communicated with welding reservoir (7), ring (3) unshakable in one's determination in not passing.Fin (1) shell can be that cast iron or casting aluminium material constitute.
Excitatory line bag (9) power supply that applies can be an AC power, can be dc source, can be three phase mains, can be single phase poaer supply, and excitatory line holds that method is corresponding with it to get final product.
The coil winding of excitatory line bag (9), basic identical with the coil of stator of motor winding.The adjusting of electromagnetic push size also can be regulated by frequency converter.
In excitatory line bag (9), insert the alternating voltage of single-phase two-phase or three-phase or heterogeneous certain amplitude and certain frequency on request, similar Principle of Electric Engine, liquid metal in outer shroud iron core (2) pump chamber (8) pump chamber, between the interior ring (3) unshakable in one's determination, produce rotating excitation field, liquid metal is cutting magnetic line in rotating excitation field, produce induced-current, inductive current direction is perpendicular to magnetic direction, parallel with pump chamber (8) axis direction, according to Faraday's law, current is subjected to Lorentz force in magnetic field, and direction is perpendicular to the magnetic direction and the sense of current, therefore produce liquid metal in pump chamber (8) around axis rotation, between pump chamber (8) and interior ring (3) unshakable in one's determination, spirality flow deflector (5) is installed, the liquid metal that rotatablely moves is changed into screw, realize the purpose of pumping liquid metal.Return duct (4) one ends are connected with welding reservoir (7), and an end is connected with pump chamber (8) afterbody, and the backflow of liquid metal is provided, and forms the purpose of continuous pumping liquid metal.Compensation (6) concentric unshakable in one's determination is installed in the afterbody of pump chamber (8), be close to afterbody, mobile outer shroud iron core (2), reduce outer shroud iron core (2) and the interior overlapping area of encircling (3) unshakable in one's determination, be equivalent to reduce the overlapping area of rotating excitation field and liquid metal, and square being directly proportional of the size of induced electricity magnetic force and this overlapping area, therefore by changing the position of outer shroud iron core (2), can regulate the electromagnetic push size easily continuously, thereby regulate crest height.When not compensating (6) unshakable in one's determination, when moving outside the internal mutually ring of outer shroud iron core (2) (3) unshakable in one's determination, because overlapping area reduces, being equivalent to air-gap increases, excitatory line bag (9) electric current will increase, and increase after the compensation (6) unshakable in one's determination, when moving outside the internal mutually ring of outer shroud iron core (2) (3) unshakable in one's determination, be equivalent to air-gap and reduce, excitatory line bag (9) electric current will reduce.
The size of electromagnetic push also can be regulated by frequency converter, and principle is identical with the variable frequency adjustment of motor speed.
Because principle of the present invention is based on complete symmetric magnetic field and realize electromagnetic induction thrust under the magnetic field condition fully continuously, therefore, electromagnetic pump efficient height, the reverse electromagnetic induction thrust effect that does not have the end of linear electromagnetic pump to produce because magnetic field is discontinuous, there is not the linear electromagnetic pump because magnetic field is asymmetric, electromagnetic attraction can't be offset (comprising magnetostrictive effect) and the vibrations and the noise that produce, and (electromagnetic attraction be Lorentz force 20 surplus times), realize complete noiselessness.
Noiselessness high-efficiency electromagnetic pump is installed in the side of welding reservoir (7), dual waves particularly, two noiselessness high-efficiency electromagnetic pumps are also held in both hands a side that is installed in welding reservoir, also two asynchronous induction noiselessness electromagnetic pumps can be installed on the bottom surface of welding reservoir (6) bottom.The liquid metal solder pumps pump chamber (8) through noiselessness high-efficiency electromagnetic pump, enters nozzle (10) ejection through current stabilization, wherein enters the random crest of formation of narrow nozzle spout, enters the flat crest of formation of wide nozzle spout.
The liquid metal soft solder material of ejection in dropping process, falls into welding reservoir (7) earlier behind splash-back, can guarantee that so the main liquid level of welding reservoir (7) is not by disturbance.
Because during noiselessness high-efficiency electromagnetic pump pumping liquid metal, there are not any rotatable parts, can not produce the extra oxidation of the rotation Mach stem generation liquid metal of mechanical pump at the liquid metal liquid level, therefore can effectively reduce the oxidation of liquid metal, reduce production costs.
Accompanying drawing 1 is single crest noiselessness high-efficiency electromagnetic pump formula soft brazing with liquid metal list peak generator structural representation of design, and accompanying drawing also is embodiment.
Accompanying drawing 1 is single peak generator.It is the profile that a noiselessness high-efficiency electromagnetic pump is installed in welding reservoir (7) side.
Among the figure, 1-fin shell; Ring is unshakable in one's determination in the 2-outer shroud iron core, 3--, the 4--return duct; The 5--flow deflector; 6--compensates unshakable in one's determination; The 7-welding reservoir; The 8--pump chamber; The excitatory line bag of 9--; The 10-nozzle.
It is simple in structure, reliable operation, no tumbler, wide accommodation, efficient height, primary peak For the random peak of high ripple, can effectively eliminate gas shield phenomenon in the SMT soft brazing, following closely flat Crest, the corrugated is wide flat, and wave pressure is even, can be well to welded PCB finishing.
Claims (7)
1. noiselessness high-efficiency electromagnetic pump soft brazing single/double wave crest generator, by noiselessness high-efficiency electromagnetic pump, welding reservoir, pump chamber, compositions such as return duct is characterized in that:
1) noiselessness high-efficiency electromagnetic pump is by outer shroud iron core (2), interior ring (3) unshakable in one's determination, excitatory line bag (9) and liquid metal pump chamber (8), return duct (4), compensation (6) unshakable in one's determination, flow deflector (5), fin compositions such as (1);
2) the outer shroud iron core (2) of noiselessness high-efficiency electromagnetic pump is annular laminated core, on outer shroud iron core (2), be evenly equipped with wire casing, excitatory line bag (9) is embedded in the wire casing, pump chamber (8) passes the interior ring of outer shroud iron core (2), ring (3) unshakable in one's determination is fixed in the pump chamber (8) in the laminate patch, the interior ring of ring (3) unshakable in one's determination in return duct (4) passes, one end is communicated with pump chamber, the other end is communicated with welding reservoir (7), encircle between the outer shroud and pump chamber (8) of (3) unshakable in one's determination in flow deflector (5) spirality is fixed on, fin (1) is fixed on the outer shroud of outer shroud iron core (2), form shell mechanism, laminate patch compensation (6) unshakable in one's determination is fixed on pump chamber (8) afterbody, can penetrate the interior ring of outer shroud iron core (2) simultaneously again;
3) can have in the side of welding reservoir (7) two independently pump chamber (8) be arranged side by side, also can be arranged in two opposites of welding reservoir (7), or two adjacent surfaces, comprise the bottom.
2. according to the described noiselessness high-efficiency electromagnetic of claim 1. pump soft brazing single/double wave crest generator, it is characterized in that: pump chamber (8) and return duct (4) are made of stainless steel tube or titanium alloy tube, flow deflector (5) prepares with titanium alloy or stainless steel material, and interior ring (3) unshakable in one's determination can overcoat titanium alloy tube or stainless steel tube.
3. according to the described noiselessness high-efficiency electromagnetic of claim 1. pump soft brazing/single/double wave crest generator, it is characterized in that: outer wrapped mica tape of excitatory line bag (9) lead or Kapton, the distribution principle of excitatory line bag (9) in outer shroud iron core (2) wire casing, identical with coil of stator of motor distribution principle, after excitatory line bag (9) is connected interchange or dc source, in outer shroud iron core (2) and interior ring (3) unshakable in one's determination and liquid metal solder between the two, produce rotating excitation field.
4. according to the described noiselessness high-efficiency electromagnetic of claim 1. pump soft brazing single/double wave crest generator, it is characterized in that: excitatory line bag (9) is embedded in the wire casing of outer shroud iron core (2), fin shell (1) is sleeved on the outer shroud of outer shroud iron core (2), constitute an integral body, this integral body can go up on the compensation iron core (6) that reaches pump chamber (8) afterbody at pump chamber (8) and move back and forth, adjusting electromagnetic push size also can adopt frequency converter to regulate the electromagnetic push size.
5. according to the described noiselessness high-efficiency electromagnetic of claim 1. pump soft brazing single/double wave crest generator, it is characterized in that: the interior ring cavity of ring (3) unshakable in one's determination in return duct (4) can pass, one end is communicated with pump chamber (8), the other end is communicated with welding reservoir (7), also can directly draw from pump chamber (8) afterbody, directly be communicated with welding reservoir (7), ring (3) unshakable in one's determination in not passing.
6. according to the described noiselessness high-efficiency electromagnetic of claim 1. pump soft brazing single/double wave crest generator, it is characterized in that: fin (1) shell can be that cast iron or casting aluminium material constitute.
7. according to the described noiselessness high-efficiency electromagnetic of claim 1. pump soft brazing single/double wave crest generator, it is characterized in that: excitatory line bag (9) power supply that applies can be an AC power, it can be dc source, can be three phase mains, can be single phase poaer supply, and excitatory line holds that method is corresponding with it to get final product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2003101058209A CN1331632C (en) | 2003-10-13 | 2003-10-13 | Noise free highly effective electromagnetic pump soft soldered single/double peak generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2003101058209A CN1331632C (en) | 2003-10-13 | 2003-10-13 | Noise free highly effective electromagnetic pump soft soldered single/double peak generator |
Publications (2)
| Publication Number | Publication Date |
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| CN1607058A CN1607058A (en) | 2005-04-20 |
| CN1331632C true CN1331632C (en) | 2007-08-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2003101058209A Expired - Fee Related CN1331632C (en) | 2003-10-13 | 2003-10-13 | Noise free highly effective electromagnetic pump soft soldered single/double peak generator |
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| CN (1) | CN1331632C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102744481A (en) * | 2012-07-31 | 2012-10-24 | 郑州机械研究所 | Brazing method for improving brazing seam strength and brazing furnace thereof |
| CN109759686B (en) * | 2019-03-22 | 2021-12-28 | 哈尔滨工业大学（威海） | Resistance spot welding method under action of controllable rotating magnetic field |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4568012A (en) * | 1982-01-14 | 1986-02-04 | Toshiba Seiki Co., Ltd. | Soldering apparatus |
| US4700878A (en) * | 1985-08-09 | 1987-10-20 | Dolphin Machinery Limited | Soldering apparatus |
| CN86209242U (en) * | 1986-11-12 | 1987-10-28 | 航天部零六六基地险峰机器厂 | Liquid metal soft soldering electromagnetic pump |
| JPH09172769A (en) * | 1995-11-07 | 1997-06-30 | Kirsten Ag | Wave soldering apparatus, linear motor pump therefor, and operating method for the pump |
| CN2274540Y (en) * | 1996-08-19 | 1998-02-18 | 张国琦 | Single/dual wave crest asynchronous inductive electric pump for liquid metal soldering |
| CN2429290Y (en) * | 2000-04-29 | 2001-05-09 | 梁亚娟 | Electromagnet pump style single-double spike generator for liquid metal brazing |
| CN2478313Y (en) * | 2001-02-12 | 2002-02-20 | 刘苏海 | Low noise electromagnetic pump soft soldered single/double peak generator |
-
2003
- 2003-10-13 CN CNB2003101058209A patent/CN1331632C/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4568012A (en) * | 1982-01-14 | 1986-02-04 | Toshiba Seiki Co., Ltd. | Soldering apparatus |
| US4700878A (en) * | 1985-08-09 | 1987-10-20 | Dolphin Machinery Limited | Soldering apparatus |
| CN86209242U (en) * | 1986-11-12 | 1987-10-28 | 航天部零六六基地险峰机器厂 | Liquid metal soft soldering electromagnetic pump |
| JPH09172769A (en) * | 1995-11-07 | 1997-06-30 | Kirsten Ag | Wave soldering apparatus, linear motor pump therefor, and operating method for the pump |
| CN2274540Y (en) * | 1996-08-19 | 1998-02-18 | 张国琦 | Single/dual wave crest asynchronous inductive electric pump for liquid metal soldering |
| CN2429290Y (en) * | 2000-04-29 | 2001-05-09 | 梁亚娟 | Electromagnet pump style single-double spike generator for liquid metal brazing |
| CN2478313Y (en) * | 2001-02-12 | 2002-02-20 | 刘苏海 | Low noise electromagnetic pump soft soldered single/double peak generator |
Non-Patent Citations (3)
| Title |
|---|
| 感应式电磁泵波峰焊技术的发展及对环境的保护 樊融融，电子工艺技术，第22卷第5期 2001 * |
| 感应式电磁泵波峰焊技术的发展及对环境的保护 樊融融，电子工艺技术，第22卷第5期 2001;新型三相异步感应式电磁泵单/双波峰焊机研究 曹捷，电子工艺技术，第19卷第1期 1998 * |
| 新型三相异步感应式电磁泵单/双波峰焊机研究 曹捷，电子工艺技术，第19卷第1期 1998 * |
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Application publication date: 20050420 Assignee: Liuzhou Meiyuan Technology Co., Ltd. Assignor: Liu Suhai Contract record no.: 2009450000026 Denomination of invention: Noise free highly effective electromagnetic pump soft soldered single/double peak generator Granted publication date: 20070815 License type: Exclusive License Record date: 20090703 |
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Granted publication date: 20070815 Termination date: 20101013 |