CN204018943U - The structure of parcel weldering micro-force sensing and the structure of amorphous wire parcel weldering micro-force sensing - Google Patents
The structure of parcel weldering micro-force sensing and the structure of amorphous wire parcel weldering micro-force sensing Download PDFInfo
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- CN204018943U CN204018943U CN201420445187.1U CN201420445187U CN204018943U CN 204018943 U CN204018943 U CN 204018943U CN 201420445187 U CN201420445187 U CN 201420445187U CN 204018943 U CN204018943 U CN 204018943U
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K11/00—Resistance welding; Severing by resistance heating
- B23K11/10—Spot welding; Stitch welding
- B23K11/11—Spot welding
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Abstract
The utility model relates to welding and micro-force sensing field, the structure of the utility model parcel weldering micro-force sensing is the electric resistance welding new technology that the microscale workpieces of solderability difference and substrate weldment realize micro-force sensing, it comprises the microscale workpieces of solderability difference and is respectively substrate weldment, two weldments of parcel weldment, the microscale workpieces of solderability difference is between the substrate weldment lapped one another and parcel weldment two weldments, substrate weldment and parcel weldment are by the spot welding of resistance spot weld soldering equipment, two weldments that the microscale workpieces of solderability difference is welded together tightly wrap up and realize the connection with substrate weldment.The utility model also proposed the structure of the parallel electrode welding head of the micro-welding equipment of special HPPR and concave arc end face, and for the connection of amorphous wire, the utility model also proposes the structure of amorphous wire parcel weldering micro-force sensing.Compared with prior art, the utility model is that the microscale workpieces of various solderability difference proposes and a kind ofly connects the micro-force sensing of parcel weldering reliably new technology.
Description
Technical field
The utility model belongs to welding and micro-force sensing field, and more particularly, the utility model relates to the structure of parcel weldering micro-force sensing and the structure of amorphous wire parcel weldering micro-force sensing.
Background technology
Micro-force sensing refers to the width of the diameter of wire rod or band, thickness is all less than connection between the microscale workpieces of 0.10mm and another kind of metal material, and various solder technology is one of Main Means of micro-force sensing.But how the microscale workpieces of the various solderability differences such as cobalt silk, platinum filament, manganese silk, tungsten filament is connected the technical barrier remaining electric resistance welding field or micro-force sensing field with electronic devices and components.In the methods such as soldering conventional at present, supersonic welding or Laser Welding, soldering often can not meet instructions for use, and Laser Welding is then difficult to application in electronic devices and components make.
Such as, amorphous wire has giant magnetoresistance antiatherosclerotic effect, and it is by having huge stressed resistance antiatherosclerotic effect during alternating current, thus can be used to make various Micro-force sensor or touch sensor, all have broad application prospects at space flight and aviation, national defence and medical field.But, due to amorphous wire not only hard and crisp, solderability extreme difference, and its at high temperature (1150 DEG C) magnetic disappearance, high temperature can not be used when thus connecting, require that again the oxide-film on amorphous wire surface must thoroughly be removed when making sensor simultaneously, make it to go to zero with the DC resistance of electronic component contact, exacting terms like this makes amorphous wire very difficult in the connection of sensor circuit.Someone proposes to carry out amorphous wire welding in ultrasonic bonding mode, but this technique is extremely loaded down with trivial details, and connect reliability and uniformity often do not reach instructions for use yet.
Therefore, how the microscale workpieces of various solderability difference realizes being connected with the reliable of electronic devices and components, and comprising the connection of amorphous wire on sensor circuit has become the technical barrier that solution is needed in special electronic devices and components manufacture badly.
Utility model content
The purpose of this utility model one is that two is be embodiment by the amorphous wire of solderability difference, proposes the structure of amorphous wire parcel weldering micro-force sensing for the microscale workpieces of solderability difference proposes parcel weldering micro-force sensing.
Before introducing the utility model, first the concept that the parcel weldering micro-force sensing proposed is described in the utility model is needed: parcel weldering micro-force sensing is a kind of electric resistance welding new technology that the microscale workpieces of solderability difference and weldment realize micro-force sensing, this technology is placed in the microscale workpieces of solderability difference between two weldments lapping one another, by carrying out electric resistance welding spot welding to two weldments, the connection that two weldments that the microscale workpieces realizing solderability difference is welded together tightly wrap up.
In order to realize above-mentioned utility model object, the utility model provides a kind of structure of wrapping up weldering micro-force sensing, it comprises the microscale workpieces of solderability difference and is respectively two weldments of substrate weldment, parcel weldment, the microscale workpieces of solderability difference is between the substrate weldment lapped one another and parcel weldment two weldments, substrate weldment and parcel weldment are by the spot welding of resistance spot weld soldering equipment, and two weldments that the microscale workpieces of solderability difference is welded together tightly wrap up and realize the connection with substrate weldment.
One as the structure of the utility model parcel weldering micro-force sensing is improved, and have at least the surface of a weldment to have tin layers that is zinc-plated or spray tin, or there is tin layers on the surface of two weldments in described substrate weldment and parcel weldment.
One as the structure of the utility model parcel weldering micro-force sensing is improved, and described resistance spot weld soldering equipment carries out spot welding with parallel electrode welding head to two weldments.
One as the structure of the utility model parcel weldering micro-force sensing is improved, described parallel electrode welding head is the parallel electrode welding head of eletrode tip contact, the parallel electrode welding head of eletrode tip disjunctor, eletrode tip neither contact also not disjunctor parallel electrode welding head or parallel two electrodes.
One as the structure of the utility model parcel weldering micro-force sensing is improved, and the welding end surface of described parallel electrode welding head is concave arc end face.
One as the structure of the utility model parcel weldering micro-force sensing is improved, the microscale workpieces of described solderability difference be melt by difficulty microscale workpieces that the hard metal of matter and alloy thereof make, surface has the microscale workpieces of insulating barrier or surface to have the microscale workpieces of insulated paint.
One as the structure of the utility model parcel weldering micro-force sensing is improved, and it is the microscale workpieces that the microscale workpieces made of microscale workpieces, tantalum and alloy thereof that microscale workpieces, manganese and alloy thereof that microscale workpieces, platinum and alloy thereof that cobalt and alloy thereof are made are made are made or tungsten and alloy thereof are made that described difficulty melts microscale workpieces that the hard metal of matter and alloy thereof make.
One as the structure of the utility model parcel weldering micro-force sensing is improved, and described microscale workpieces is that wire diameter is less than or equal to
wire rod, or thickness or width are less than or equal to the band of 0.10mm.
One as the structure of the utility model parcel weldering micro-force sensing is improved, described resistance spot weld soldering equipment is the micro-welding equipment of HPPR, HPPR micro-welding equipment complex thermocompression bonding (H), parallel clearance weldering (P), the spot welding machine head (P) of tool accurate electrode force compression system and the architectural feature of the micro-welding of electric resistance welding (R).
Compared with prior art, the structure of the utility model parcel weldering micro-force sensing adds the parcel weldment on a microscale workpieces covering solderability difference, and by resistance spot weld soldering equipment, parcel weldment point is welded in substrate weldment, achieve microscale workpieces to be connected with the reliable of substrate weldment, efficiently solve a welding difficult problem for the microscale workpieces of solderability difference.
In order to realize above-mentioned utility model object, the utility model additionally provides the structure of a kind of amorphous wire parcel weldering micro-force sensing, it comprises amorphous wire, parcel weldment and is connected pad, wrap up weldment and be connected pad by spot-welded together, amorphous wire is at parcel weldment and to connect between pad and the parcel weldment be welded together and be connected pad and tightly wrap up, and realizes the reliable connection of amorphous wire on connection pad.
One as the structure of the utility model amorphous wire parcel weldering micro-force sensing is improved, described parcel weldment be connected pad and carried out indirect welding by resistance spot weld soldering equipment and weld together.
One as the structure of the utility model amorphous wire parcel weldering micro-force sensing is improved, described resistance spot weld soldering equipment with parallel electrode welding head to parcel weldment be connected pad and carry out spot welding.
One as the structure of the utility model amorphous wire parcel weldering micro-force sensing is improved, and the welding end surface of described parallel electrode welding head is concave arc end face.
One as the structure of the utility model amorphous wire parcel weldering micro-force sensing is improved, and described resistance spot weld soldering equipment is preferably the micro-welding equipment of HPPR.
One as the structure of the utility model amorphous wire parcel weldering micro-force sensing is improved, and described connection pad is the zinc-plated connection pad of substrate mother metal, weldment is zinc-plated weldment, and two conditions at least meet one.
One as the structure of the utility model amorphous wire parcel weldering micro-force sensing is improved, and described connection pad is arranged on the circuit of amorphous wire sensor, and the circuit of amorphous wire sensor is printed board circuit.
The structure of the utility model parcel weldering micro-force sensing is hard and crisp for amorphous wire, solderability is poor, there is oxide-film and the feature of high temperature can not be used in surface, by to parcel weldment with to be connected pad zinc-plated, and apply the micro-welding equipment of HPPR, indirect welding is carried out with parallel electrode welding head butt-welding fitting, the oxide-film on amorphous wire surface is removed in the extruding while tin layers is melted in pressurization of parcel weldment, therefore both maintained the magneto-electric behavior of amorphous wire and deformation do not occurred, amorphous wire is made again tightly to be wrapped up by two weldments of solid diffusivity and realize reliable connection, visible, compared with prior art, the utility model is that the amorphous wire of amorphous wire sensor circuit connects and provides a solid syndeton.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the structure of the utility model parcel weldering micro-force sensing, the structure of amorphous wire parcel weldering micro-force sensing and beneficial effect thereof are described in detail.
Fig. 1 is the structural representation of the utility model parcel weldering micro-force sensing.
Fig. 2 is the structural representation of the spot welding machine head of the accurate electrode force compression system of resistance spot weld soldering equipment and tool.
Fig. 3 is the electrical block diagram of the printed substrate of amorphous wire sensor.
Fig. 4 is the structural representation of the utility model amorphous wire parcel weldering micro-force sensing.
Detailed description of the invention
In order to make the purpose of this utility model, technical scheme and Advantageous Effects thereof more clear, below in conjunction with the drawings and specific embodiments, the utility model is described in detail.Should be understood that, the detailed description of the invention described in this description is only used to explain the utility model, is not intended to limit the utility model.
Refer to Fig. 1 and Fig. 2 (structural representation of the parcel weldering micro-force sensing of Fig. 1 is the enlarged drawing at A place in Fig. 2), welded part 224, resistance spot weld soldering equipment 100 are connected with parallel electrode welding head 223 with welding head holder 212 by output cable 214; Welded part 224 comprises substrate weldment 103 and parcel weldment 102 2 weldments, two weldments 102 and 103 are assembled into lap joint, the microscale workpieces 101 of solderability difference is placed in the middle of two weldments 102,103, resistance spot weld soldering equipment 100 carries out spot welding with parallel electrode welding head 223 to two weldments 102 and 103, the reliable connection that two weldments 102 and 103 that the microscale workpieces 101 realizing solderability difference is welded together tightly wrap up.
Described microscale workpieces refers to that wire diameter is less than or equal to
wire rod, or thickness or width are less than or equal to the band of 0.10mm, and microscale workpieces 101 is generally the workpiece of solderability difference.
Solderability due to microscale workpieces 101 is poor and workpiece is tiny, in order to two weldments 102,103 when ensureing resistance spot weld soldering equipment pressurization spot welding can good contact conduction and produce resistance heat, the surface of a weldment is had at least to need soft metal tin layers 104 in two weldments 102,103 provided, as sprayed tin or zinc-plated on weldment 102,103 surface; Certainly, also can be that the surface of two weldments 102,103 has spray tin or zinc-plated.Because tin is soft, have the features such as wellability is good, good conductivity, fusing point are low, therefore the electric current of electric resistance welding of pressurizeing does not need to produce too high resistance heat, tin layers 104 can wrap the microscale workpieces 101 of solderability difference, make two weldments 102,103 produce further solid diffusivity or fuse, thus realize microscale workpieces 101 and be connected with the reliable of weldment 102,103.
In addition, fusing point due to tin layers 104 is low and have wellability, when indirect welding is carried out in the pressurization of resistance spot weld soldering equipment, weldment 102, the tin layers on 103 surfaces can effectively extrude the oxide-film on microscale workpieces 101 surface or insulated paint and remove, so the utility model parcel weldering micro-force sensing structure can not only be applicable to the microscale workpieces that various difficulty melts the solderability difference that the hard metal of matter and alloy thereof are made, include but not limited to the microscale workpieces that cobalt and alloy thereof are made, the microscale workpieces that platinum and alloy thereof are made, the microscale workpieces that manganese and alloy thereof are made, the microscale workpieces that tantalum and alloy thereof are made, the microscale workpieces that tungsten and alloy thereof are made, but also can be applicable to the microscale workpieces that there are insulating barrier or insulated paint in various surface, if any the amorphous wire of oxide-film or the enamel-covered wire of manganese silk, the enamel-covered wire etc. of copper wire.
What be necessary to mention the present embodiment carries out spot welding with parallel electrode welding head 223 to two weldments by resistance spot weld soldering equipment 100 and is described further: electric resistance welding carries out the mode of spot welding to overlap two weldments, comprise and two electrodes are made upper/lower electrode be placed in the direct welding mode of the upper and lower side of two weldments and two electrodes are made the indirect welding mode that parallel pole is placed in the same side of two weldments, in a broad sense, above-mentioned two kinds of spot welding modes can be applied on parcel weldering micro-force sensing, but in practice, parcel weldering micro-force sensing does not often have the operating position of bottom electrode, so the parcel weldering micro-force sensing that the utility model proposes mainly applies the indirect welding mode with parallel pole, and indirect welding is except two electrodes can applying parallel pole, also mainly apply the various parallel electrode welding heads that the utility model proposes.
Parallel electrode welding head 223 is main tool that resistance welding equipment two weldments carry out indirect welding, be necessary to be described further it: parallel electrode welding head 223 can be the parallel electrode welding head of eletrode tip disjunctor or nib contacts parallel electrode welding head, also can be eletrode tip neither disjunctor also discontiguous parallel electrode welding head, can also be two parallel electrodes.When resistance spot weld soldering equipment 100 pairs of parallel pole 223 feeds, two weldments 102,103 can be made to produce resistance heat, while two weldments 102,103 are welded together, tightly wrap up the microscale workpieces 101 of solderability difference, realize reliably connecting.
The parallel electrode welding head of the parallel electrode welding head of Fig. 1 display to be welding end surface be concave arc end face, its acting as in parcel weldering micro-force sensing: when spot welding being carried out to the parcel weldment 102 covered on the microscale workpieces 101 of solderability difference when the parallel electrode welding head 223 of concave arc end face, on the one hand, two ends outside concave arc can ensure reliably to weld two weldments 102,103, on the other hand, the microscale workpieces 101 being in the solderability difference of concave arc end face minimum point also can ensure that two weldments be welded together tightly wrap up and realize reliable connection.
In order to ensure that the microscale workpieces of solderability difference implements parcel weldering micro-force sensing tool reliability, uniformity and practicality, the utility model proposes the micro-welding equipment of HPPR that parcel weldering micro-force sensing is special, the Heat and Pressure Welding (thermocompression bonding H) due to HPPR micro-welding equipment complex, Parallel electrode with single side welding (parallel clearance weldering P), Precise Force System in header (the spot welding machine head P of accurate electrode force compression system), the architectural feature of Resistance of micro welding (electric resistance welding micro-welding R), therefore also there is the advantage of these four kinds of structures, for simplicity, the utility model is referred to as the micro-welding equipment of HPPR.According to its architectural feature, from the angle of welding field, the concept of the micro-welding equipment of HPPR can be expressed as: the micro-welding equipment of HPPR comprises thermocompression bonding (H), parallel clearance weldering (P), the spot welding machine head (P) of tool accurate electrode force compression system and the micro-welding of electric resistance welding (R) four part.The micro-welding equipment of HPPR can realize exporting pulse precision ± 0.01V, output pulse width ± 0.1ms, welding energy ± 0.5 joule, electrode force ± 0.5N, it is contemplated that, traditional resistance spot weld soldering equipment its export can accuracy of measurement generally at ± 10J, electrode force precision generally at ± 10N, only has so traditional resistance spot weld soldering equipment often cannot be competent at wire diameter
the parcel weldering micro-force sensing of the microscale workpieces of following solderability difference.
Be necessary the architectural feature further illustrating the micro-welding equipment of HPPR: on the spot welding machine head of the accurate electrode compression system of tool, welding head holder is installed, parallel electrode welding head is arranged on welding head holder, and the micro-source of welding current of electric resistance welding to be connected with welding head holder by output cable and to provide welding current for parallel electrode welding head.When conducting welding current, first electric current makes it to occur high temperature or electric spark by the tip of parallel electrode welding head, and electric current realizes thermocompression bonding and the electric resistance welding of butt-welding fitting by weldment thereupon.Require emphasis, the micro-welding equipment of HPPR is that in other words the micro-welding equipment of HPPR also belongs to resistance spot weld soldering equipment to welding regulation of energy precision and all higher resistance spot weld soldering equipment of weld force control accuracy.
Because the micro-source of welding current of electric resistance welding has been open in the precision resistance welding spot soldering equipment application of ZL200810005894.8 at number of patent application, parallel electrode welding head has been also open in the nib contacts formula parallel electrode welding head application of ZL201310122137.X at application number, and therefore the utility model mainly introduces the spot welding machine head of the accurate electrode force compression system of tool.
For this reason, first the implication understanding the accurate electrode force compression system that the utility model proposes is needed: electrode force compression system refers to and welds the dependency structure that the period provides electrode force, the electrode force that accurate electrode force compression system is then to provide can meet the dependency structure of the micro-welding requirements of electric resistance welding, and namely accurately electrode force compression system must meet following three requirements: one is that presetting electrode force must be accurately consistent; Two is all maintain in presetting scope at whole welding period electrode force and keep relative constancy; Three is the pressurizations of disconnected excessive weld force butt-welding fitting of must having pulled while having welded.Thus, accurate electrode force compression system is in requisition for the acting in conjunction of disconnected device three part of being pulled by the presetting device of electrode force, welding active force conduction device and welding.
Particularly, the spot welding machine head of the tool that the utility model proposes accurate electrode force compression system comprises machine head frame, the accurate electrode force compression system be arranged in machine head frame, and accurate electrode force compression system comprises welding active force conduction device, the accurately presetting device of electrode force and weld force and to pull disconnected device; Realize all maintaining in presetting scope at whole welding period electrode force and keeping relative constancy by accurate electrode force compression system; Welding power is conducted by its moment by welding active force conduction device, weld force is converted into electrode force and conducts to welding head holder; The presetting device of accurate electrode force provides the setting can carrying out presetting quantification electrode force, when it detects the value that electrode force reaches presetting, drives spot welding power to provide welding current; Weld force pulls disconnected device when electrode force reaches presetting value, blocks the moment conduction of weld force.
Refer to accompanying drawing 2, resistance spot weld soldering equipment 100 is connected with parallel pole 223 with welding head holder 212 by output cable 214, welded part 224 is placed in work stage 225, the enlarged drawing of part A did special description in FIG, below only 2 structures introducing welding active force conduction device in accurate electrode force compression system and accurate electrode force presetting device two part by reference to the accompanying drawings.
Machine head frame tool four facades all around of spot welding machine head, before machine head frame, facade is 201, before specify that machine head frame after facade 201, also specify that rear facade and the left and right facade of machine head frame simultaneously.Be fixed with column 202 at facade after machine head frame, the hypomere of column 202 then fixedly mounts on the table.Machine head frame is provided with little axle 203, axis 204 and the slide-bar 205 installed with parallel direction with column 202; In installing with vertical direction with column 202 in addition, axle clamp 206 and slide-bar press from both sides 207.One end and the axis 204 of middle axle clamp 206 are fastenedly connected, and the other end of middle axle clamp 206 is set in welding conducting power pull bar 222 (or drag-line); Axle clamp 206 during back-moving spring 221 one end connects, the support member of other end adapter sleeve on pull bar 222.One end and the slide-bar 205 of slide-bar folder 207 are fastenedly connected, upper and lower two sections of axis 204 are respectively equipped with Compress Spring 208,209, slide-bar folder 207 is run through setting by axis 204, in the corresponding position that slide-bar folder 207 is run through by axis 204, conflict respectively or connect described Compress Spring 208,209 in the upper and lower end face of slide-bar folder 207.Little axle 203 runs through middle axle clamp 206 and slide-bar folder 207 in the mode slidably connected; In addition, little axle 203 is also divided into upper and lower two sections that are provided with Compress Spring 210,211, the corresponding position that slide-bar folder 207 is run through by little axle 203, conflicts respectively or connect described Compress Spring 210,211 in its upper and lower end face.The lower end of slide-bar 205 is in order to be fixedly connected with welding head holder 212, and parallel electrode welding head 223 is arranged on welding head holder 212.
In above-mentioned spot welding machine head, achieve the little axle 203 of set mounting structure, axis 204, middle axle clamp 206, slide-bar folder 207 constitute weld force conducting structure; The slide-bar 205 and the welding head holder 212 that achieve set mounting structure constitute electrode force conducting structure; First group of Compress Spring, 208, the 209 and second group of Compress Spring 210,211 be arranged on axis 204 and little axle 203 constitutes weld force buffer structure.
With regard to the function that above-mentioned each parts realize, described little axle 203, axis 204 are the axis of guide of weld force, middle axle clamp 206 and slide-bar folder 207 are the conductor of weld force, and little axle 203, slide-bar 205 are axis of guides of electrode force, and welding head holder 212 is the conductor of electrode force.The component of above-mentioned weld force conducting structure, electrode force conducting structure and weld force buffer structure three part and organic structure thereof, together constitute welding active force conduction device described in the utility model.
Can know from the structure of the present embodiment, weld force buffer structure essence refers to the Compress Spring be arranged between weld force conducting structure and electrode force conducting structure, its effect comprises and weld force is mildly delivered to electrode force conducting structure and when weld force is pulled disconnected, weld force still can servo-actuated maintenance under the effect of Compress Spring, that is, by arranging the structure transmitted for cushioning moment in above-mentioned moment bang path, the transmission of exerting all one's strength is more soft, namely forms weld force buffer structure of the present utility model.So, based on the principle that the present embodiment is identical, those skilled in the art should know, the specific implementation of weld force buffer structure can have varied, such as the present embodiment can be improved, weld force buffer structure is made only to retain wherein one group of spring assembly, or a Compress Spring is only set between weld force conducting structure and electrode force conducting structure and (as is arranged on little axle 203 top, middle axle clamp 206 and middle part slide-bar press from both sides the Compress Spring 210 between 207, omit other three Compress Springs 211, 208, 209), so all, all belong to the weld force buffer structure that the utility model proposes, fall into protection category of the present utility model.
In the structure of Fig. 2, when Compress Spring 208,209 is built in axis 204, foregoing cushioning effect can be played, a part for weld force buffer structure can be considered as, but, observe from another function visual angle, by the compression position of regulating spring 208,209, then its to serve accurate electrode force further presetting and follow the effect of structure.The utility model is provided with electrode force circuit 216 in the front end of machine head frame 201, and the presetting structure of this accurate electrode force and electrode force circuit 216 constitute the presetting device of accurate electrode force of the present utility model.In the presetting structure of accurate electrode force, two sections Compress Spring 208,209 is when dispatching from the factory, and its coefficient of elasticity is set, and it is also set that its time releases power to the reaction of external force.
As previously mentioned, the presetting device of accurate electrode force comprises the presetting structure of accurate electrode force and electrode force circuit 216, the presetting structure of accurate electrode force except adopt as shown in Figure 2 follow structure realize except, pressure sensor structure can also be adopted to realize, and electrode force circuit is then electrically connected with the main frame being provided with spot welding power and spot welding power regulation device.
Need to be illustrated, described Compress Spring 208,209 plays in the above-described embodiments and acts on very cleverly, and it both can play the effect of weld force buffering and servo-actuated maintenance structure, also can play the effect of the presetting structure of accurate electrode force.And analyze according to the aforementioned multiple variation instance disclosed about weld force buffer structure and the presetting structure of accurate electrode force, Compress Spring 208,209, can be replaced in certain embodiments for all nonessential implementation of this two structures; But adopting Compress Spring 208,209 can realize this two structures, is obviously more excellent scheme simultaneously.Those skilled in the art should have clear and definite cognition to this.
Weld force disconnected device of pulling comprises electromagnet structure and the solenoid circuit for DM arrangement works, electromagnet structure comprises electromagnet and absorption iron block, on electromagnet and the absorption iron block fixed component that is arranged on spot welding machine head respectively and movable part, the electrode force circuit of solenoid circuit and the presetting device of accurate electrode force is electrically connected.
During solenoid circuit conducting, the electromagnet in DM structure adsorbs described absorption iron block.It should be noted that, in order to realize working cycles, electromagnet structure must have reset components, and reset components refers to when solenoid circuit disconnects, and is returned to the component of origin-location by the absorption iron block that electromagnet adsorbs.Relevant reset components can be multiple, adopts such as extension spring, permanent magnet etc. that polarity is contrary with electromagnet can assist the known construction that resetted by the movable part adsorbed, because those skilled in the art should know, do not repeat for this reason.
Composition graphs 2 weld force introduced in accurate electrode force compression system is pulled the structure of disconnected device more below.
Fig. 2 is electromagnet, absorption iron block is arranged on structural representation on the fixed component of spot welding machine head and movable part respectively.As shown in Figure 2, at the upper side frame of machine head frame 201, electromagnet 217 is installed, the adsorption plane of contiguous electromagnet is provided with absorption iron block 218, is provided with reset components 219 in the upper end of axis 204 and slide-bar 205, absorption iron block 218 is connected by pivot pin 220 with reset components 219.
Because axis 204 belongs to movable part, axis 204 in motion process, once the absorption iron block 218 on it adsorb by electromagnet 217, axis 204 just plays inhibition in weld force transmittance process, thus plays disconnected effect of pulling.And once solenoid circuit disconnects, make electromagnet 217 loss of excitation, then the reset components 219 on axis 204 just resets and forces external force suffered by axis 204 remove and reset, recover the normal force environment of axis 204.
As previously mentioned, the utility model is divided into movable part and fixed component the structure of spot welding machine head, be not limited to as the front upper side frame to machine head frame and the understanding to these two parts of axis 204, in fact, those skilled in the art can be known by description of the present utility model, and the movable part alleged by the utility model comprises the movable parts such as middle axle clamp 206, axis 204, little axle 203, slide-bar folder 207, slide-bar 205; Fixed component comprises the relative and fixed components of above-mentioned movable part such as machine head frame.Any fixed component or movable part, all can be designed to described electromagnet 217 by those skilled in the art according to conventional design principles and adsorb iron block 218 and reposition element matches, and not be subject to the restriction of existing structure.
In sum, be necessary to summarize to the following three dot structure features of accurate electrode force compression system of the present utility model:
(1) design feature of electromechanical integration: according to the master-plan of accurate electrode force compression system, accurate electrode force compression system described in the utility model includes weld force conducting structure, weld force buffer structure, electrode force conducting structure, electromagnet structure, solenoid circuit, the compression system of the electromechanical integration of the presetting structure of accurate electrode force and electrode force circuit composition, in whole accurate electrode force compression system, electrode force circuit plays very important control action, when welding workpiece, first on the presetting device of accurate electrode force, by electrode force circuit, input for presetting electrode force in the mode quantized, then, during operation, welding power source provides weld force to weld force conductor, when electrode force electric circuit inspection reaches pre-set value to weld force, electrode force circuit sends instruction to the source of welding current on the one hand, conducting spot welding power, also sending instruction to solenoid circuit on the other hand makes electromagnet conducting to adsorb described absorption iron block, namely electromagnet structure carries out stopper to weld force conducting structure, stop moment conduction to stop excessive weld force to act on electrode,
(2) weld force is pulled the architectural feature of disconnected device: the weldment of the micro-welding of electric resistance welding is generally less than 0.10mm, the utility model adopts not by the weld force engine device that weldment difference in height affects on the one hand, the stopper of prior art is all the structure adopting stroke limit, such as best the waiing upon of prior art stopper precision takes motor, it is less than 0.01mm to stroke limit precision, but often can not meet the requirement of the micro-welding of electric resistance welding, it is very general that reason is that the difference in height of welded piece reaches the situation of 0.03mm, servomotor is at a complete loss as to what to do with the error of stroke limit to workpiece, the utility model is with the work signal of trigger electromagnet while of the triggering signal of spot welding power, therefore stopper of the present utility model is not just completely by the impact of weldment difference in height, after spot weld operation completes, electrode force circuit disconnects the spot welding current that provides of spot welding power, and the weld force of instruction simultaneously disconnected device of pulling restores to the original state, and namely completes a pinpoint welding procedure,
(3) architectural feature of electrode force buffer structure: the action principle about weld force buffer structure seems simple, but the important composition being also accurate electrode force compression system, the whole spot welding period of the micro-welding of electric resistance welding, all need maintain relative constancy by electrode force in preset range, too large difficulty is not had to the required precision of accurate electrode force presetting device proposition ± 0.1N, but, because electric resistance welding pinpoint welding procedure is in, close completely cannot observer state, pinpoint welding procedure includes electricity, heat, power, multivariable coupling, these couplings are again nonlinearities, weldment is softened again the extremely short nucleation process of flattening after being in first expanded by heating, so, require accurate electrode force compression system the whole welding period all electrode force is remained on ± accuracy rating of 0.5N has very large difficulty on the contrary, it is contemplated that: if do not have the servo-actuated maintenance of weld force buffer structure, just there will be the electrode force when weldment expands increases thereupon, and when weldment is crushed, electrode force reduces thereupon, when weld force is disappeared by electrode force during stopper thereupon, the accurate electrode force compression system of the utility model electromechanical integration just by the presetting device of accurate electrode force in conjunction with weld force engine device and weld force buffer structure synergy, mutually restrict, realize in the whole spot welding period, electrode force all maintains at preset range and keeps relative constancy.
The technical barrier that the amorphous wire proposed for background technology below connects at sensor circuit, the utility model further discloses the structure of amorphous wire parcel weldering micro-force sensing.
Mentioned by background technology, due to amorphous wire not only hard and crisp, solderability extreme difference, and its at high temperature (1150 DEG C) magnetic disappearance, high temperature can not be used when thus connecting, require that again the oxide-film on amorphous wire surface must thoroughly be removed when making sensor simultaneously, make it to go to zero with the DC resistance of electronic component contact, exacting terms like this makes amorphous wire very difficult in the connection of sensor circuit.So amorphous wire can be described as the typical case of the microscale workpieces of solderability difference, as long as can realize the reliable connection of amorphous wire on sensor circuit, the microscale workpieces of other various solderability difference can realize reliable connection equally.
For the ease of understanding, before the parcel weldering micro-force sensing of the utility model amorphous wire is described, first the circuit structure of amorphous wire sensor is introduced.
Refer to Fig. 3, the circuit 301 of amorphous wire sensor is printed substrate circuit, and it is provided with two at printed substrate circuit and connects pad 302.Connect between pad 302 at two and be provided with insulating sleeve 303, insulating sleeve 303 is then wound with the coil 304 that two groups can provide alternating current; Amorphous wire 307 runs through insulating sleeve 303, and two ends are connected on two connection pads 302; The lead-out wire 305 of two groups of enamel-covered wires is welded on two groups of enamel wire coils respectively and draws on four pads 306 of contact.In various embodiments, the circuit of amorphous wire sensor can be designed as the circuit structure of paster, also can be designed as the circuit structure of skeleton belt transect pin.The circuit of the present embodiment amorphous wire sensor is printed substrate circuit, the circuit structure of its structure relative to skeleton belt transect pin or the circuit structure of paster, printed substrate circuit not only have easier connection pad do zinc-plated tin spray process process, also have and be easy to another weldment locating and machining hole on a printed-wiring board, with the enamel-covered wire lead-out wire locating and machining hole be easy to two groups of coils or dowel, thus the circuit of amorphous wire sensor adopts with the structure of printed substrate circuit, more be convenient to adopt the micro-welding equipment of HPPR to carry out the connection of amorphous wire 307 with the parcel of electric resistance welding indirect welding weldering micro-force sensing.
Refer to Fig. 4, the manufacturing process of the structure of the utility model amorphous wire parcel weldering micro-force sensing is:
1) amorphous wire sensor circuit 301, amorphous wire 307, parcel weldment 405 and resistance spot weld soldering equipment are provided; Wherein, amorphous wire circuit is printed substrate circuit, its tin layers 403 comprising printed substrate Copper Foil 402 at the connection pad 302 of printed substrate circuit and be sprayed on Copper Foil 402, tin thickness is about 0.10mm, connects pad 302 and is also referred to as substrate weldment; Parcel weldment 405 is tin-coated copper strip, and in figs. 3 and 4, the diameter of amorphous wire 307 is
two distances connected between pad 302 are 8mm, and the size of pad 302 is 1mm × 1mm; Parcel weldment 405 is the tin-coated copper strip of wide 0.10mm, thick 0.04mm, and zinc-plated thickness is about 0.02mm; But in other embodiments, above parameter can change to some extent;
2) amorphous wire 307 is placed on the connection pad 302 of sensor circuit, and covers amorphous wire 307 with parcel weldment 405, with parallel electrode welding head, spot welding is carried out to parcel weldment 405 by resistance spot weld soldering equipment;
3) wrap up weldment 405 and be connected pad 302 and be welded together, namely amorphous wire 307 is tightly wrapped in parcel weldment 405 and is connected between pad 302, thus achieves the microscale workpieces amorphous wire 307 of solderability difference and be connected the reliable connection of pad 302; Afterwards not excising with the redundance being connected the parcel weldment 405 that pad 302 welds together, the parcel weldering micro-force sensing of amorphous wire 307 can be completed.
It should be noted that, the resistance spot weld soldering equipment that the structure of the utility model parcel weldering micro-force sensing uses is preferably the micro-welding equipment of above-mentioned HPPR, the parallel electrode welding head used is preferably the parallel electrode welding head of concave arc end face, during use, the parallel electrode welding head of concave arc end face is arranged on the micro-welding equipment of HPPR, welding pressure is set in 5.0N, voltage pulse output is set in 0.6V, exporting the burst length is set in 8ms, can be shown in the parcel weldment 405 that connection pad 302 carries out lap joint weld Fig. 4 institute.Certainly, in various embodiments, the utility model also can adopt eletrode tip contact parallel electrode welding head to weld.
As can be seen from Figure 4, the structure of the utility model amorphous wire parcel weldering micro-force sensing using said process to obtain comprises amorphous wire 307, parcel weldment 405 and is connected pad 302; Wherein, parcel weldment 405 be connected pad 302 and be welded together, amorphous wire 307 between connection pad 302 and parcel weldment 405 and the parcel weldment 405 be welded together and be connected pad 302 and tightly wrap up, achieves the reliable connection of amorphous wire 307 on connection pad 302.
Do tensile test to the amorphous wire 307 after welding embodiment illustrated in fig. 4, result shows its stretching resistance 105g, and the resistance value at amorphous wire 307 two ends is 16 Ω.
Longitudinal section inspection is done to the amorphous wire 307 after welding embodiment illustrated in fig. 4 and solder joint, finds that amorphous wire 307 is not crushed distortion, still retain
the face of cylinder; And the surface of amorphous wire 307 is silvery white in color, surrounding is all infiltrated parcel by tin layers, and namely the surface of amorphous wire 307 does not find oxide-film; The vertical section of solder joint is also shown in parcel weldment 405 and the phase counterdiffusion and the recrystallization that are connected pad 302 both sides copper metal, and the connection of both explanations is the solid diffusivity structure of typical electric resistance welding spot welding.
According to above-mentioned testing result, can draw to draw a conclusion:
1) because
the internal resistance value of amorphous wire 307 is 2 Ω/mm, so the two ends resistance value that length is the amorphous wire 307 of 8mm should be 16 Ω, identical with experimental result, illustrate that amorphous wire 307 is connected the DC resistance at two contacts place that pad 302 connects all close to zero with two;
2) surface of amorphous wire 307 does not find oxide-film, illustrate that the micro-welding equipment of HPPR is when making thermocompression bonding and electric resistance welding to parcel weldment 405, parcel weldment 405 effectively removes the oxide-film on amorphous wire 307 surface with the tin layers being connected pad 302 in pressurization melting process;
3) because tin gets final product melting at 250 DEG C, therefore amorphous wire 307 is only infiltrated parcel by tin layers and deformation does not occur, and the amorphous wire structure of amorphous wire also would not be destroyed;
4) amorphous wire 307 by the parcel weldment 405 that there occurs solid diffusivity be connected pad 302 firmly parcel and realize reliable connection.
5) microscale workpieces of solderability difference can apply the micro-welding equipment of HPPR, realizes reliable connection by parcel weldering micro-force sensing.
The announcement of book and instruction according to the above description, the utility model those skilled in the art can also carry out suitable change and amendment to above-mentioned embodiment.Therefore, the utility model is not limited to detailed description of the invention disclosed and described above, also should fall in the protection domain of the utility model claim modifications and changes more of the present utility model.In addition, although employ some specific terms in this description, these terms just for convenience of description, do not form any restriction to the utility model.
Claims (16)
1. one kind is wrapped up the structure of weldering micro-force sensing, it is characterized in that: comprise the microscale workpieces of solderability difference and be respectively two weldments of substrate weldment, parcel weldment, the microscale workpieces of solderability difference is between the substrate weldment lapped one another and parcel weldment two weldments, substrate weldment and parcel weldment are by the spot welding of resistance spot weld soldering equipment, and two weldments that the microscale workpieces of solderability difference is welded together tightly wrap up and realize the connection with substrate weldment.
2. the structure of parcel weldering micro-force sensing according to claim 1, is characterized in that: have at least the surface of a weldment to have tin layers that is zinc-plated or spray tin in described substrate weldment and parcel weldment, or there is tin layers on the surface of two weldments.
3. the structure of parcel weldering micro-force sensing according to claim 1, is characterized in that: described resistance spot weld soldering equipment carries out spot welding with parallel electrode welding head to two weldments.
4. the structure of parcel weldering micro-force sensing according to claim 3, is characterized in that: described parallel electrode welding head is the parallel electrode welding head of eletrode tip contact, the parallel electrode welding head of eletrode tip disjunctor, eletrode tip neither contact also not disjunctor parallel electrode welding head or parallel two electrodes.
5. the structure of the parcel weldering micro-force sensing according to claim 3 or 4, is characterized in that: the welding end surface of described parallel electrode welding head is concave arc end face.
6. the structure of parcel weldering micro-force sensing according to claim 1, is characterized in that: the microscale workpieces of described solderability difference be melt by difficulty microscale workpieces that the hard metal of matter and alloy thereof make, surface has the microscale workpieces of insulating barrier or surface to have the microscale workpieces of insulated paint.
7. the structure of parcel weldering micro-force sensing according to claim 6, is characterized in that: it is the microscale workpieces that the microscale workpieces made of microscale workpieces, tantalum and alloy thereof that microscale workpieces, manganese and alloy thereof that microscale workpieces, platinum and alloy thereof that cobalt and alloy thereof are made are made are made or tungsten and alloy thereof are made that described difficulty melts microscale workpieces that the hard metal of matter and alloy thereof make.
8. the structure of parcel weldering micro-force sensing according to claim 1, is characterized in that: described microscale workpieces is that wire diameter is less than or equal to
wire rod, or thickness or width are less than or equal to the band of 0.10mm.
9. the structure of parcel weldering micro-force sensing according to claim 1, to it is characterized in that: described resistance spot weld soldering equipment is the micro-welding equipment of HPPR, HPPR micro-welding equipment complex thermocompression bonding, parallel clearance weldering, the spot welding machine head of tool accurate electrode force compression system and the architectural feature of the micro-welding of electric resistance welding.
10. the structure of an amorphous wire parcel weldering micro-force sensing, it is characterized in that: comprise amorphous wire, parcel weldment and be connected pad, wrap up weldment and be connected pad by spot-welded together, amorphous wire is at parcel weldment and to connect between pad and the parcel weldment be welded together and be connected pad and tightly wrap up, and realizes the reliable connection of amorphous wire on connection pad.
The structure of 11. amorphous wire according to claim 10 parcel weldering micro-force sensing, is characterized in that: described parcel weldment be connected pad and carried out indirect welding by resistance spot weld soldering equipment and weld together.
The structure of 12. amorphous wire according to claim 11 parcel weldering micro-force sensing, is characterized in that: described resistance spot weld soldering equipment with parallel electrode welding head to parcel weldment be connected pad and carry out spot welding.
The structure of 13. amorphous wire parcel weldering micro-force sensing according to claim 12, is characterized in that: the welding end surface of described parallel electrode welding head is concave arc end face.
The structure of 14. amorphous wire parcel weldering micro-force sensing according to claim 11, is characterized in that: described resistance spot weld soldering equipment is preferably the micro-welding equipment of HPPR.
The structure of 15. amorphous wire according to claim 10 parcel weldering micro-force sensing, is characterized in that: described connection pad is the zinc-plated connection pad of substrate mother metal, weldment is zinc-plated weldment, and two conditions at least meet one.
16. weld the structure of micro-force sensing according to claim 10 to the amorphous wire parcel according to any one of 15, and it is characterized in that: described connection pad is arranged on the circuit of amorphous wire sensor, the circuit of amorphous wire sensor is printed board circuit.
Priority Applications (1)
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| CN201420445187.1U CN204018943U (en) | 2014-05-25 | 2014-08-07 | The structure of parcel weldering micro-force sensing and the structure of amorphous wire parcel weldering micro-force sensing |
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| CN201410224618 | 2014-05-25 | ||
| CN201410224618.6 | 2014-05-25 | ||
| CN201420445187.1U CN204018943U (en) | 2014-05-25 | 2014-08-07 | The structure of parcel weldering micro-force sensing and the structure of amorphous wire parcel weldering micro-force sensing |
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| CN201410387726.5A Expired - Fee Related CN104174985B (en) | 2014-05-25 | 2014-08-07 | The structure of parcel weldering micro-force sensing and the parcel weldering micro-force sensing method of amorphous wire |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104174985A (en) * | 2014-05-25 | 2014-12-03 | 广州微点焊设备有限公司 | Structure of package welding and micro-joining, and package welding and micro-joining method of cobalt-based amorphous wire |
| CN107570852A (en) * | 2017-08-25 | 2018-01-12 | 中国电子科技集团公司第四十八研究所 | A kind of solar cell piece welding system and welding method |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105665909A (en) * | 2016-04-22 | 2016-06-15 | 贵州航天精工制造有限公司 | Welding method for bond strap assembly |
| CN108723566B (en) * | 2018-08-06 | 2021-08-13 | 常州铭赛机器人科技股份有限公司 | Stamping resistance welding system and welding method thereof |
| CN113134658B (en) * | 2021-05-03 | 2022-11-11 | 东北石油大学 | Non-contact electromagnetic ultrasonic auxiliary welding equipment |
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| DE3218284A1 (en) * | 1982-05-13 | 1983-11-17 | Bogdan Dr.-Ing. 1000 Berlin Kocjancic | Process for conductive welding of amorphous metallic materials |
| JPH0550257A (en) * | 1991-06-26 | 1993-03-02 | Mitsubishi Motors Corp | Spot welding method for aluminum plate |
| JPH05185245A (en) * | 1991-12-26 | 1993-07-27 | Honda Motor Co Ltd | Method for resistant-welding low electric resistant metal member |
| CN1132714C (en) * | 2001-06-07 | 2003-12-31 | 杨仕桐 | Spot welder capable of welding lacquered wire directly |
| US20090294411A1 (en) * | 2007-11-09 | 2009-12-03 | Khakhalev Alexander D | System for and method of projection weld-bonding workpieces |
| CN101877297B (en) * | 2009-04-30 | 2012-02-08 | 北京滨松光子技术股份有限公司 | Spot welding technology of vibration-proof photomultiplier lead |
| CN202162492U (en) * | 2010-12-31 | 2012-03-14 | 广州微点焊设备有限公司 | Parallel electrode welding head |
| CN102950350A (en) * | 2012-10-05 | 2013-03-06 | 中国电子科技集团公司第十研究所 | Process for welding electronic microcomponents based on multi-temperature gradient |
| CN103706933A (en) * | 2013-12-03 | 2014-04-09 | 广州微点焊设备有限公司 | Integrated automatic microscopic welding equipment |
| WO2015180263A1 (en) * | 2014-05-25 | 2015-12-03 | 广州微点焊设备有限公司 | Wrapping welding micro-jointing structure and wrapping welding micro-jointing method for cobalt-based amorphous wire |
-
2014
- 2014-08-07 WO PCT/CN2014/083933 patent/WO2015180263A1/en active Application Filing
- 2014-08-07 CN CN201420445187.1U patent/CN204018943U/en not_active Expired - Fee Related
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104174985A (en) * | 2014-05-25 | 2014-12-03 | 广州微点焊设备有限公司 | Structure of package welding and micro-joining, and package welding and micro-joining method of cobalt-based amorphous wire |
| CN104174985B (en) * | 2014-05-25 | 2016-09-07 | 广州微点焊设备有限公司 | The structure of parcel weldering micro-force sensing and the parcel weldering micro-force sensing method of amorphous wire |
| CN107570852A (en) * | 2017-08-25 | 2018-01-12 | 中国电子科技集团公司第四十八研究所 | A kind of solar cell piece welding system and welding method |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2015180263A1 (en) | 2015-12-03 |
| CN104174985B (en) | 2016-09-07 |
| CN104174985A (en) | 2014-12-03 |
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