CN102950374A - Tip contact type parallel electrode welding head - Google Patents
Tip contact type parallel electrode welding head Download PDFInfo
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- CN102950374A CN102950374A CN 201210169663 CN201210169663A CN102950374A CN 102950374 A CN102950374 A CN 102950374A CN 201210169663 CN201210169663 CN 201210169663 CN 201210169663 A CN201210169663 A CN 201210169663A CN 102950374 A CN102950374 A CN 102950374A
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Abstract
The invention relates to a tip contact type parallel electrode welding head for directly welding enameled wires. The tip contact type parallel electrode welding head is provided with a top contact part, a tip transition part, a main body part and a connecting part, and comprises two parallel electrodes and an insulating isolation layer which is firmly connected with the two parallel electrodes. The two electrodes are made into inlaid electrodes, the two inlaid electrodes are bent inwards at the inlaid joint to the opposite directions, and the top contact part and the tip transition part are formed; and moreover, and a plastic sleeve serves as the insulating isolation layer which is firmly connected with the two inlaid electrodes. The tip contact type parallel electrode welding head which has stable and reliable tip contact part and has high impact resistance is provided for directly welding the enameled wires for the electric resistance welding.
Description
Technical field:The present invention relates to electric resistance welding spot welding, relate to the parallel electrode welding head with the electric resistance welding directly welding enamelled wires.
Background technology: in the technology with the electric resistance welding directly welding enamelled wires, parallel electrode welding head is very important.At present disclosedly include the prestressing force spot welding head (patent No. is: 93245377.5), electric welding head of pinpoint welding (patent No.: 01114808.X) and parallel electrode welding head (two most advanced and sophisticated number of patent applications are: 201020696469.0) etc., it is that the most advanced and sophisticated contact site of structure is stable not and soldering tip is not long service life that these technology exist a great deficiency.
Goal of the invention:The purpose of this invention is to provide long most advanced and sophisticated contact parallel electrode welding head of a kind of Stability Analysis of Structures and service life.
Summary of the invention:At first the concept of the present invention's proposition " parallel electrode welding head " is done simple introduction: the weld metal that is connected with source of welding current both positive and negative polarity is referred to as electrode; Place two electrodes the same side of weldment to be referred to as parallel pole; Parallel pole is solidly fixed is referred to as parallel electrode welding head.
The parallel electrode welding head of present disclosed directly welding enamelled wires, not outer two kinds of its cutting-edge structures, a kind of is most advanced and sophisticated contact, another kind is most advanced and sophisticated Contiuum type, most advanced and sophisticated Contiuum type is because disjunctor section resistance is very little, so could produce the effect of paint removal and welding by the very large magnitude of current, content of the present invention does not set off a discussion to most advanced and sophisticated Contiuum type parallel electrode welding head.
Most advanced and sophisticated contact parallel electrode welding head comprises two electrodes being made by high temperature resistant weld metal material such as tungsten, molybdenum or tungsten alloy, molybdenum alloy etc., dielectric spacer layer is arranged and connect to one between two electrodes, most advanced and sophisticated contact parallel electrode welding head can be divided into most advanced and sophisticated contact site, most advanced and sophisticated transition part, main part, connecting portion on outward appearance and functional structure.Most advanced and sophisticated contact parallel electrode welding head is connected with welding head holder by connecting portion, and welding head holder is connected with head, and the source of welding current is connected with welding head holder by output cable.
The operation principle of most advanced and sophisticated contact parallel electrode welding head is that head is handled the soldered enamel-covered wire of soldering tip compression, the conducting source of welding current when pressure reaches setting value, large electric current is by the most advanced and sophisticated contact site of soldering tip, make most advanced and sophisticated contact site produce electric spark, the insulated paint part on the enamel-covered wire is by the electric spark burn off, and remainder is shunk back to both sides, bare metal, under the effect of welding pressure, large electric current transfers to flow into metal and the substrate in the enamel-covered wire, realizes electric resistance welding.In other words, the prerequisite of most advanced and sophisticated contact parallel electrode welding head energy directly welding enamelled wires is: most advanced and sophisticated contact site keeps good stable and most advanced and sophisticated the contact, make it the large electric current of continuous conducting, constantly produce electric spark, continuous burn off insulated paint, if most advanced and sophisticated contact site can not produce electric spark, can not burn off insulated paint, welding also just can't be carried out.
The most advanced and sophisticated contact parallel electrode welding head of prior art, generally connecting to one with about two semi-cylindrical electrode of Φ 3.2mm consists of, two electrodes the insulation spacing very little, generally below 0.10mm, causing the method for most advanced and sophisticated contact is to utilize the ductility of metal, approximately the 2mm place is curved in the relative direction separately apart from two eletrode tips, make it to form the stress contact, the present invention calls most advanced and sophisticated contact site to this stress contact, and generally speaking, the length of this tip contact site is no more than 0.5mm.When using this most advanced and sophisticated contact parallel electrode welding head to weld, because most advanced and sophisticated contact site is under certain electrode force effect, contact tip constantly produces electric spark burn off insulated paint, not stopping pregnancy is given birth to high temperature and is welded, most advanced and sophisticated contact site constantly is subjected to the impact of electrode force and electric spark under hot conditions, will cause the unstable of most advanced and sophisticated contact site, progressively cause most advanced and sophisticated loose contact or do not contact, affect welding quality and soldering tip service life, thereby it is reliable and stable and increase the technical barrier that its impact resistance becomes directly welding enamelled wires how most advanced and sophisticated contact parallel electrode welding head to be increased most advanced and sophisticated contact site.
Because the most advanced and sophisticated contact parallel electrode welding head of prior art all is to be proposed by the inventor basically, in order to solve the technical barrier of above-mentioned directly welding enamelled wires, the inventor has proposed since " prestressing force electrode " patent from 1993, be engaged in always and studying the directly welding enamelled wires technology, and the impact resistance that how most advanced and sophisticated contact parallel electrode welding head is increased the reliable and stable of most advanced and sophisticated contact site always and how to increase most advanced and sophisticated contact site carries out a large amount of experiments, repeatedly on probation various with applied external force, comprise and add insulating sleeve, comprise with various frame for movements etc., the discovery difficulty is very big, can be referred to as four large difficulties:
The one, enamel-covered wire is very thin, be generally less than Φ 0.10mm, lead-out wire is very short again, generally only have more than 10 millimeter, and welding must be within the near-end 1-3mm that draws near enamel-covered wire, and pad is also very tiny, generally only has about 0.5*0.5mm, the end face at corresponding soldering tip tip generally also only has about 0.5*0.5mm, adds insulating sleeve in narrow like this space or other method nearly all can not realize;
Two is that two spacings between the electrode are very little, 0.10mm only has an appointment, the length of most advanced and sophisticated contact site is extremely short, generally be no more than 0.5mm, guarantee under the good prerequisite of most advanced and sophisticated contact site conduction essential, how to increase its not only the reliable and stable of most advanced and sophisticated contact site of short not only thin but also thin (approximately 0.5*0.5*0.5mm) become extremely difficult;
The 3rd, the most advanced and sophisticated transition part of parallel electrode welding head often need to be with tapered or irregular tapered transition, to add insulating sleeve at tapered most advanced and sophisticated transition part, not only processing very difficult and put after again very easy slippage, therefore it also is difficult firmly putting insulating sleeve at most advanced and sophisticated transition part;
The 4th, getting a clear view in the time of must will guaranteeing welding operation, directly welding enamelled wires belongs to micro-welding, soldered enamel-covered wire is generally less than Φ 0.10mm, even in the shortest operating distance, the normal person also can't see weldment clearly more can't offer an explanation welding effect, must be by the microoptic device guarantee visual field clear, under such condition, the Ji is larger in the difficulty that most advanced and sophisticated transition part adds insulating sleeve, requires higher.
In order to increase the reliable and stable of the most advanced and sophisticated contact site of most advanced and sophisticated contact parallel electrode welding head and to increase its impact resistance, the present invention proposes original two simple half-cylindrical electrodes are changed into the mosaic electrode of two symmetries, two mosaic electrodes to inlay the junction curved in the relative direction separately, contact site tapers off to a point, from most advanced and sophisticated contact site to inlaying the junction transition part that tapers off to a point, the electrode of inlaying is the tungsten metal electrode, molybdenum electrode or tungsten alloy electrode or molybdenum alloy electrode, bearing the metal of inlaying is that electrical and thermal conductivity performance is led copper metal or each Albatra metal-strong with ductility, bear the main part that the metal of inlaying has consisted of mosaic electrode, connecting portion is formed by the main part extension, and two mosaic electrodes are connected with welding head holder by connecting portion.
The present invention is directed to the fault of construction of the most advanced and sophisticated contact parallel electrode welding head of original technology: one is that the electrode spacing that crook formation stress contacts in two electrodes is too little; Two is that crook ionization electrode distance between two tips is too short in two electrodes; Three is that the crook is not only thin but also thin in two electrodes, and the contact force that so not only produces is very little, also is to cause most advanced and sophisticated contact site to stablize not and the poor main cause of anti-impact force.
The present invention proposes original two semicircular parallel poles are made mosaic electrode, and bending becomes the eletrode tip contact site in the junction of inlaying, because inlaying bearing object is the good metal of ductility, add the greatly overstriking of metal of interior turn of bilge, the spacing of interior turn of bilge strengthens greatly, interior turn of bilge lengthens greatly apart from the distance of most advanced and sophisticated contact site, and the contact force that therefore produces also increases greatly, also greatly increases the reliable and stable of most advanced and sophisticated contact site and greatly increases its impact resistance simultaneously.
Because the present invention replaces original two semicircular parallel poles with two mosaic electrodes, thereby the insulation interlayer of two mosaic electrodes that are connected is also caused considerable trouble.The present invention proposes at the main part of two mosaic electrodes with the be connected insulation interlayer of two mosaic electrodes of insulating sleeve, by insulating sleeve the firm parallel electrode welding head of linking into an integrated entity of two mosaic electrodes, the structure of insulating sleeve includes the sleeve portion of two endoporus and the mid portion between sleeve pipe, two endoporus of sleeve pipe and the external diameter of mosaic electrode is suitable that two mosaic electrodes are fixed into one securely.
In order better to stablize two mosaic electrodes, the insulating sleeve mid portion can also extend to the connecting portion of two mosaic electrodes, by do the insulation interlayer of two mosaic electrodes that are connected with insulating sleeve, two mosaic electrodes have just consisted of complete integrated most advanced and sophisticated contact parallel electrode welding head.No matter the most advanced and sophisticated contact parallel electrode welding head that the present invention proposes is compared with original technology from appearance or all be far from each other on the structure, has significant substantive distinguishing features.
Must be pointed out, just be connected wherein a kind of structure of insulation interlayer of two mosaic electrodes of insulating sleeve, other similar structures can also be arranged, such as the sleeve pipe of insulating sleeve being made dumb-bell shape, rectangle, ellipse or other shapes, or the sleeve pipe of employing metal or other material, if metal sleeve, on the contact-making surface of metal sleeve and mosaic electrode by separating two mosaic electrodes that also can be connected with the insulation viscose glue or with other insulating materials, these methods or structure also have a lot, do not enumerate one by one.Make the equivalent structure of the insulation interlayer of two mosaic electrodes but these method and structures all belong to the present invention proposes with insulating sleeve, all fall into the protection domain of making the insulation interlayer of two mosaic electrodes with insulating sleeve.
This shows, the present invention is with respect to the most advanced and sophisticated contact parallel electrode welding head of prior art, on structure and significant substantive distinguishing features and technological progress all arranged in appearance.
Further specify this structure below in conjunction with embodiment.
Fig. 1 is the front view of the most advanced and sophisticated contact parallel electrode welding head of the present invention, wherein 1,2 is mosaic electrode, 3,4 is the bearing object of mosaic electrode, insulating sleeve is with the plastic injection-moulded plastic bushing that forms, plastic bushing 5 is the insulation interlayer that firmly links two mosaic electrodes, 6 is the plastic bushing mid portion, and the plastic bushing mid portion can also extend to the connecting portion of mosaic electrode.
Fig. 2 is the profile of the most advanced and sophisticated contact parallel electrode welding head of the present invention.Most advanced and sophisticated contact parallel electrode welding head comprises the electrode of two symmetries, and two columniform tungsten or molybdenum electrode 1,2 are mounted to respectively on the columniform copper rod (or copper pipe) 3,4 of two symmetries, namely consists of the mosaic electrode of two symmetries.Copper rod is the bearing object of mosaic electrode.Tungsten electrode is about φ 1.0*15mm, inlay length and be about 5mm, the other end of tungsten electrode is done transition processing to the tip, make it to form respectively the approximately most advanced and sophisticated end face of 0.25*0.25, inlay junction 5 at copper rod and tungsten electrode, curved in the relative steering handle copper rod respectively, tungsten electrode has just formed most advanced and sophisticated contact site 6 and most advanced and sophisticated transition part 7 like this, copper rod is about respectively φ 3*25mm, the back gauge of two copper rods is about 2mm, and (centre-to-centre spacing is 5mm), copper rod has consisted of the main part 8 of most advanced and sophisticated contact parallel electrode welding head, and connecting portion 9,10 are extended by copper rod and to form, and connecting portion is connected with welding head holder.
In order to make most advanced and sophisticated contact parallel electrode welding head structure more stable, the present invention also proposes firmly to connect with the insulation interlayer of two mosaic electrodes of insulating sleeve work and two mosaic electrodes.Embodiment Figure 2 shows that with the plastic injection-moulded plastic bushing that forms of insulating materials, two circular holes 11 of plastic bushing, 12 firmly connect to one to two mosaic electrodes.As seen, the structure of embodiment plastic bushing includes the sleeve portion of two endoporus and the mid portion between sleeve pipe.Two endoporus of sleeve portion are connected with the external diameter of mosaic electrode is suitable and tight.
Top view Fig. 3 and side view Fig. 4 make the structure that the insulation interlayer firmly links two mosaic electrodes in order to introduce more intuitively embodiment with plastic bushing.
Need to prove, the present invention adopts the electrode of φ 1.0mm, and original technology generally adopts the electrode of φ 3.2mm, although the present invention strengthens the spacing of two eletrode tip transition parts, but still assurance and original technology most advanced and sophisticated contact site of a size, thereby a bit space and visual field that does not affect welding operation.
Structure of the present invention has solved the most advanced and sophisticated contact parallel electrode welding head of prior art at one stroke to increasing the reliable and stable four large difficulties with increasing its anti-impact force aspect of most advanced and sophisticated contact site.
Two groups of most advanced and sophisticated contact parallel electrode welding heads that the inventor once got the most advanced and sophisticated face area of identical electrodes carry out test record, and the W1 group is the soldering tip of structure of the present invention, and the W2 group is the prestressing force welding head of electrode of original technology, and content measurement comprises two parts:
First is the stretching resistance of most advanced and sophisticated contact site: the sheet metal with identical 0.06mm places two eletrode tip contact positions, test is also recorded its stretching resistance, the stretching resistance that found that W1 group eletrode tip contact site is large 500g all, and the stretching resistance of W2 group eletrode tip contact site is all less than 200g.
The second part comprises following three:
1. observe the most advanced and sophisticated contact site end face of soldering tip electric spark situation:
On current: electric spark is good product in end contact line middle; Contact wire take back or take over or the following person of end face for certified products, the tip does not produce the electric spark, and the person is defective work.
2. the resistance value of normal temperature lower prong contact site: contact resistance≤2m Ω is good product, and 2-5m Ω is certified products, and＞5m Ω is defective work.
3. soldering tip life-span: soldering tip life test condition is: with Φ 0.08 enamel-covered wire at the enterprising spot welding of iron-nickel alloy substrate, welding parameter is set: weld force F=6.0N, weldingvoltage V=1.00V, weld interval T=10ms, assessment method is counted more than 10000 as excellent for welding; The 7000-10000 point is good; The 5000-7000 point is qualified, and the 3000-5000 point is substandard products, and＜3000 is defective.
Test recording table
Can make as drawing a conclusion from above-mentioned test result: the most advanced and sophisticated contact parallel electrode welding head of the present invention is compared with original technology, has significant technological progress.
Claims (7)
1. most advanced and sophisticated contact parallel electrode welding head, comprise two parallel poles and be connected the insulation interlayer that connects two parallel poles, it is characterized in that: two parallel poles are the mosaic electrode of two symmetries, two mosaic electrodes to inlay the junction curved in the relative direction separately, contact site tapers off to a point, from most advanced and sophisticated contact site to inlaying the junction transition part that tapers off to a point, the bearing object of mosaic electrode is the main part of mosaic electrode, main part extend to connecting portion.
2. the insulation interlayer of two parallel poles of a firm connection as claimed in claim 1 is characterized in that: two mosaic electrodes are firmly linked into an integrated entity with insulating sleeve by the main part at two mosaic electrodes.
3. the insulating sleeve that two mosaic electrodes are firmly linked into an integrated entity as claimed in claim 2 is characterized in that: the sleeve portion that the structure of insulating sleeve comprises and the mosaic electrode external diameter is suitable and the mid portion between the sleeve pipe.
4. one kind such as claim 2,3 described insulating sleeves, it is characterized in that: described insulating sleeve is the plastic bushing with injection molding.
5. mid portion such as claim 3,4 described insulating sleeves and plastic bushing is characterized in that: insulating sleeve or plastic bushing mid portion extend to the connecting portion of two mosaic electrodes.
6. most advanced and sophisticated contact parallel electrode welding head as claimed in claim 1, it is characterized in that: the described electrode of inlaying is tungsten electrode, molybdenum electrode or tungsten alloy electrode or molybdenum alloy electrode.
7. a most advanced and sophisticated contact parallel electrode welding head as claimed in claim 1 is characterized in that described mosaic electrode bearing object is copper metal or copper alloy.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210169663 CN102950374A (en) | 2012-05-29 | 2012-05-29 | Tip contact type parallel electrode welding head |
| PCT/CN2013/074179 WO2014005458A1 (en) | 2012-04-17 | 2013-04-14 | Novel parallel electrode welding head and preparation process thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210169663 CN102950374A (en) | 2012-05-29 | 2012-05-29 | Tip contact type parallel electrode welding head |
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| CN102950374A true CN102950374A (en) | 2013-03-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201210169663 Pending CN102950374A (en) | 2012-04-17 | 2012-05-29 | Tip contact type parallel electrode welding head |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014005458A1 (en) * | 2012-04-17 | 2014-01-09 | 广州微点焊设备有限公司 | Novel parallel electrode welding head and preparation process thereof |
| CN103921005A (en) * | 2013-12-03 | 2014-07-16 | 广州微点焊设备有限公司 | Hot-pressing electric resistance welding type microscopic welding equipment |
| WO2015000364A1 (en) * | 2013-07-03 | 2015-01-08 | Lam Chingwung | Electric resistance welding method and use thereof, and electrode welding head used |
| CN105689876A (en) * | 2016-03-26 | 2016-06-22 | 广州微点焊设备有限公司 | Resistance spot welding machine capable of automatically monitoring welding quality |
-
2012
- 2012-05-29 CN CN 201210169663 patent/CN102950374A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014005458A1 (en) * | 2012-04-17 | 2014-01-09 | 广州微点焊设备有限公司 | Novel parallel electrode welding head and preparation process thereof |
| WO2015000364A1 (en) * | 2013-07-03 | 2015-01-08 | Lam Chingwung | Electric resistance welding method and use thereof, and electrode welding head used |
| US20160228974A1 (en) * | 2013-07-03 | 2016-08-11 | Ching Wung LAM | Electric resistance welding method and use thereof, and electrode welding head used |
| CN103921005A (en) * | 2013-12-03 | 2014-07-16 | 广州微点焊设备有限公司 | Hot-pressing electric resistance welding type microscopic welding equipment |
| CN104057197A (en) * | 2013-12-03 | 2014-09-24 | 广州微点焊设备有限公司 | Parallel electrode welding head with wire cutter and preparation method thereof |
| CN103921005B (en) * | 2013-12-03 | 2017-01-04 | 广州微点焊设备有限公司 | The micro-welding equipment of Pyroelectric Media welding resistance |
| CN105689876A (en) * | 2016-03-26 | 2016-06-22 | 广州微点焊设备有限公司 | Resistance spot welding machine capable of automatically monitoring welding quality |
| CN105689876B (en) * | 2016-03-26 | 2019-03-26 | 广州微点焊设备有限公司 | The resistance spot weld welding machine of automatic monitoring welding quality |
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Application publication date: 20130306 |