CN105397267A - Ultrasonic welding device - Google Patents

Ultrasonic welding device Download PDF

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Publication number
CN105397267A
CN105397267A CN201410471937.7A CN201410471937A CN105397267A CN 105397267 A CN105397267 A CN 105397267A CN 201410471937 A CN201410471937 A CN 201410471937A CN 105397267 A CN105397267 A CN 105397267A
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sliding seat
fixed
base
welding
ultrasonic
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CN201410471937.7A
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Chinese (zh)
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CN105397267B (en
Inventor
夏祖荣
韩子锋
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Shenzhen Huapusen Technology Co Ltd
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Shenzhen Huapusen Technology Co Ltd
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Abstract

The invention discloses an ultrasonic welding device used for welding workpieces. The ultrasonic welding device comprises a positioning mechanism, a welding mechanism, a driving mechanism and a buffering mechanism. The positioning mechanism is used for carrying the workpieces. The welding mechanism comprises a welding head and a sliding seat. The sliding seat is slidably connected to a support. The welding head is used for making contact with the workpieces. The driving mechanism comprises a driving piece and a pull rod. The driving piece drives the pull rod to do reciprocating motion. The buffering mechanism comprises an elastic piece and an adjusting piece. The adjusting piece is fixed to the end, away from the driving piece, of the pull rod. The elastic piece is connected between the adjusting piece and the sliding seat and used for providing restoring force for making the sliding seat get away from a base. In this way, when the welding head is in contact with the workpieces for welding, the elastic piece generates resistance to the welding head, then the welding pressure of the welding head is adjusted, deformation of the workpieces during welding is reduced, and the quality of the workpieces is improved.

Description

Ultrasonic brazing unit
Technical field
The present invention relates to field of welding devices, particularly relate to a kind of ultrasonic brazing unit.
Background technology
Along with the progress of society and applying of new energy technology, people have higher requirement to novel battery, and cylindrical lithium battery is high due to energy volume ratio, thus occupies a tiny space in emerging field of batteries.
At present, the producer of domestic production cylindrical lithium electricity, when welding combination cover cap, multiselect laser carries out spot welding or ultrasonic bonding.
Laser weld can only weld 3-4 point, when welding count increase time, may cause block and lug overheated and have influence on battery performance; When welding is counted very few, have impact on electric conductivity again, directly increase the internal resistance of cell.In addition, traditional laser weld needs two people's compounding practices, inefficient operation.
And ultrasonic bonding, usually can be excessive due to welding pressure, damage battery cap, affect product quality, there is potential safety hazard.
Summary of the invention
The object of the present invention is to provide a kind of ultrasonic brazing unit improving production quality.
In order to solve the problems of the technologies described above, the invention provides a kind of ultrasonic brazing unit, for welding work pieces, wherein, described ultrasonic brazing unit comprises detent mechanism, welding mechanism, driving mechanism and buffer gear, described detent mechanism comprises support, base and workbench, described workbench is fixed on described base, for placing described workpiece, described support is fixed on described base, be positioned at described workbench side, described welding mechanism comprises ultrasonic transformer, soldering tip and sliding seat, described sliding seat is slidably connected on described support, described sliding seat is arranged along close or away from described base direction slip, described ultrasonic transformer one end is fixed on described sliding seat, for being electrically connected supersonic generator, and produce mechanical oscillation, the vertical described sliding seat glide direction of described ultrasonic transformer length direction, described soldering tip is fixed on the described ultrasonic transformer other end, and relatively described workbench is arranged, for contacting described workpiece, described driving mechanism comprises actuator and pull bar, described actuator is fixed on described base, described pull bar is driven to move back and forth along the glide direction of described sliding seat, the glide direction of the parallel described sliding seat of described pull bar length direction, described buffer gear comprises elastic component and regulating part, described regulating part is fixed on described pull bar away from described actuator one end, described elastic component is connected between described regulating part and sliding seat, for providing described sliding seat away from the restoring force of described base.
Wherein, described workbench comprises fixed block and support column, described fixed block is fixed on described base, described support column is fixed on described fixed block away from described base side, and extend along the glide direction of described sliding seat, described support column is provided with groove away from described fixed block one end, and described groove is used for securing the above workpiece.
Wherein, described sliding seat comprises host cavity, the openend of described host cavity is positioned at described sliding seat near described base side, and described regulating part and described elastic component are all contained in described host cavity, and described elastic component is compressed between described regulating part and described openend.
Wherein, described workpiece is cylindrical battery block, and described groove is circular groove, and described groove is provided with breach.
Wherein, the amplitude of described soldering tip is 10 μm ~ 25 μm.
Wherein, described welding mechanism comprises transducer, described transducer is fixed on described sliding seat, for being electrically connected the supersonic generator that ultrasonic frequency is 35K ~ 50.0K hertz, and converting the high frequency electrical signal of described supersonic generator to mechanical oscillation and is passed to described ultrasonic transformer.
Wherein, described support comprises the first fixed head and the second fixed head that cross section is oppositely arranged, described first fixed head and described second fixed head are all fixed on described base, and cross section is all vertically arranged, described first fixed head is provided with near described second fixed head side the first chute vertically extended, described second fixed head is provided with the second chute that vertical direction extends near described first fixed head side, relatively described first chute of described second chute is arranged, and described sliding seat is slidably connected between described first chute and described second chute.
Wherein, described first chute and described second chute are equipped with shock absorber part near described base one end, and described shock absorber part is for providing described sliding seat away from the restoring force of described base.
Wherein, described support also comprises top board, described top board is fixed on described first fixed head and described second fixed head away from described base one end, the described sliding seat of gig is between described top board and described base, described top board arranges pilot hole, and described sliding seat is provided with the guide post extending to described pilot hole.
Wherein, described actuator is cylinder, and described elastic component is Rectangular Spring.
Ultrasonic brazing unit of the present invention drives described pull bar to move along the glide direction of described sliding seat by described actuator, and be fixedly connected with described regulating part by described pull bar away from described actuator one end, described elastic component is connected with between described regulating part and described sliding seat, and then described pull bar drives described sliding seat to slide, described elastic component is utilized to provide described sliding seat away from the restoring force of described base, make described soldering tip when contacting the welding of described workpiece, described elastic component produces resistance to described soldering tip, and then regulate the welding pressure of described soldering tip, reduce the deformation of described workpiece when welding, improve the quality of described workpiece.
Accompanying drawing explanation
In order to be illustrated more clearly in technical scheme of the present invention, be briefly described to the accompanying drawing used required in embodiment below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
The ultrasonic brazing unit schematic diagram that Fig. 1 is;
Fig. 2 be the ultrasonic brazing unit of Fig. 1 cut open workbench schematic diagram;
Fig. 3 is the schematic diagram of the welding mechanism of the ultrasonic brazing unit of Fig. 1;
Fig. 4 is the sectional view of welding mechanism along IV-IV of Fig. 3.
Detailed description of the invention
Below in conjunction with the accompanying drawing in embodiment of the present invention, the technical scheme in embodiment of the present invention is clearly and completely described.
See also Fig. 1, Fig. 2, Fig. 3 and Fig. 4, a kind of ultrasonic brazing unit 100 that embodiment of the present invention provides, described ultrasonic brazing unit 100 comprises detent mechanism 10, welding mechanism 20, driving mechanism 30 and buffer gear 40.Described detent mechanism 10 is for place work piece (not shown), described welding mechanism 20 is for welding described workpiece, driving mechanism 30 moves for driving described welding mechanism 20, and described buffer gear 40 is for reducing described welding mechanism 20 to the welding pressure of described workpiece.Described workpiece can be lithium battery cap, also can be cable, or other electronic devices and components.In present embodiment, described workpiece is the battery cap of cylinder type lithium battery.
Concrete, described detent mechanism 10 comprises base 11, support 12 and workbench 13.Described support 12 and described workbench 13 are all fixed on described base 11.Described welding mechanism 20 installed by described support 12, for placing described workpiece on described workbench 13.
In present embodiment, described base 11 rectangle plate, the material of described base 11 adopts metal material.Described base 11 can be fixed on ground, also can be positioned on streamline platform.In present embodiment, described base 11 is fixed on desktop.Certainly, in other embodiments, described base can also be circular plate.
In present embodiment, described support 12 comprises and is oppositely arranged the first fixed head 121 and the second fixed head 122, and top board 123.Described first fixed head 121 and the second fixed head 122 are square plate, and described first fixed head 121 of institute and the second fixed head 122 are square plate, and cross section is all vertically arranged.Described first fixed head 121 is provided with the first chute (sign) near described second plate 122 side, and described first chute vertically extends.Described second fixed head 122 is provided with the second chute 122a near described first fixed head 12 side, and described second chute 122a vertically extends, and relatively described first chute of described second chute 122a is arranged.Be slidably connected between described first chute and described second chute 122a described welding mechanism 20.Described top board 13 is square plate, and described top board 13 crossbearer away from described pedestal 11 one end, is fixedly connected with described first fixed head 121 and described second fixed head 122 in described first fixed head 121 and described second fixed head 122.Described top board 123 cross-sectional horizontal is arranged, and relatively described pedestal 11 is arranged.Described top board 123 arranges pilot hole (not shown), and described pilot hole is used for leading to described welding mechanism.In present embodiment, described first fixed head 121, second fixed head 122 and top board 123 material all adopt metal.Make the structure of described support 12 more firm, longer service life.Certainly, in other embodiments, described support can also be that many steel pipes mutually overlap and form.
In present embodiment, described workbench 13 comprises fixed block 131 and support column 132.Described fixed block 131 is rectangular block.Described fixed block 131 screw is connected on described pedestal 11, for convenience detach, or changes described workbench 13, and described fixed block 131 makes described workbench 13 structure more firm simultaneously.Described support column 132 is cylinder, described in support 132 length directions and vertically extend.Described support column 132 is fixed on described fixed block 131 away from described pedestal 11 side.Described support column 132 is wholely set with described fixed block 133, strengthens described workbench 13 vibration-resistant property.Described support column 132 is provided with groove 132a away from described fixed block 131 one end.Described groove 132a is circular groove.Placing described workpiece in described groove 132a, secure the above workpiece simultaneously, making described workpiece can not arbitrarily movement when welding.Described groove 132a is provided with breach 132b, described breach 132b is convenient when taking out described workpiece, with all sides of workpiece described in hand or holder, the operating efficiency of described ultrasonic brazing unit 100 can be improve, simultaneously the described workpiece of all right adaptive multiple different size.Certainly, in other embodiments, described support column can also be square cylinder, and described groove can also be design reticulate pattern, can also be square groove, or pipe-like, or the groove of any one adaptive electronic devices and components of arc groove.
Described welding mechanism 20 comprises sliding seat 21, transducer 22, ultrasonic transformer 23 and soldering tip 24.Described sliding seat 21 is rectangular block, and described sliding seat 21 is slidably connected to described support 12, and described sliding seat 21 is arranged along close or away from described pedestal 11 direction slip.In present embodiment, described sliding seat 21 is slidably connected between described first chute and described second chute 122a, and the glide direction of described sliding seat 21 is vertically arranged.Concrete, described sliding seat 21 both sides arrange slide block 21a respectively, and two described slide block 21a are slidably connected in described first chute and described second chute 122a respectively.Certainly, in other embodiments, if described support is slide bar, described sliding seat can also arrange slide opening, and described bracket slide is connected in the slide opening of described sliding seat; Described sliding seat can also arrange guide post by corresponding described pilot hole, and described guide post vertically extends in described pilot hole, and is slidably connected in described pilot hole.
Described transducer 22 is fixed on described sliding seat 21, for being electrically connected supersonic generator (not shown).In present embodiment, described transducer 22 accesses the supersonic generator that ultrasonic frequency is 35K ~ 50.0K hertz, concrete, it is 40K hertz that described transducer 22 accesses ultrasonic frequency, and the high frequency electrical signal of described supersonic generator is converted to mechanical oscillation and be passed to described ultrasonic transformer 23, make described ultrasonic transformer 23 produce dither.Certainly, in other embodiments, described transducer can also access the ultrasonic frequency of 35K hertz or 43.5K hertz.
Described ultrasonic transformer 23 is fixed on described sliding seat 21, described ultrasonic transformer 23 converts the mechanical oscillation of described transducer 22 to stable high-frequency mechanical vibration by machine driving, the glide direction of the vertical described sliding seat 21 of described ultrasonic transformer 23 length, in present embodiment, described ultrasonic transformer 23 length direction is horizontally disposed with.Described ultrasonic transformer 23 one end is electrically connected described supersonic generator by described transducer 22, and the other end is fixedly connected with described soldering tip 24, and described high-frequency mechanical vibration is gathered in described soldering tip 24, makes described soldering tip 24 produce vibration.Certainly, in other embodiments, described ultrasonic transformer length direction may not be horizontal direction setting.
Described soldering tip 24 is fixed on described ultrasonic transformer 23 one end, and relatively described workbench 13 is arranged, for contacting described workpiece.In present embodiment, the amplitude of described soldering tip 24 is 10 μm ~ 25 μm, described soldering tip 24 in the vertical direction is just to the groove 132a of described support column 132, when described sliding seat 21 is when described pedestal 11 is descending, the workpiece of described soldering tip 24 on described support column 132, and contact described workpiece, the mechanical oscillation of described ultrasonic transformer 23 are passed to described workpiece, described workpiece is made to produce friction because of vibration, thus heating welding.Described soldering tip 24 is rectangular block shape, and described soldering tip 24 adds the bonding area of described workpiece.Certainly, in other embodiments, described soldering tip can also other shapes.
Described driving mechanism 30 comprises actuator 31 and pull bar 32, and described actuator 31 is fixed on described pedestal 11, drives described pull bar 32 to move back and forth along the glide direction of described sliding seat 21.In present embodiment, described in the actuator 31 that goes be cylinder, described actuator 31 utilizes Pneumatic pressure to promote described pull bar 32 to stretch.Described pull bar 32 length direction extends along the glide direction of described sliding seat 21.In present embodiment, the length direction of described pull bar 32 is vertically arranged, and vertically slides.Certainly, in other embodiments, described actuator can also be motor, if the glide direction of described sliding seat is horizontally disposed with, then the glide direction of described pull bar also can be horizontally disposed with.
Described buffer gear 40 comprises elastic component (sign) and regulating part 41, and described regulating part 41 is fixed on described pull bar 32 away from described actuator 31 one end, and described elastic component is connected between described sliding seat 21 and described regulating part 41.In present embodiment, described regulating part 41 is cylinder.Described regulating part 41 one end is fixedly connected with described pull bar 32, and the other end extends towards described sliding seat 21.The end face of described regulating part 41 near described sliding seat 21 one end arranges flange 41a, and described elastic component is connected between described flange 41a and described sliding seat 21, for providing described sliding seat 21 away from the restoring force of described base 11.In present embodiment, described elastic component is Rectangular Spring, and described elastic component is sheathed on described regulating part 41.Described sliding seat 21 comprises host cavity 21a, the openend of described host cavity 21a is positioned at described sliding seat 21 near described base 11 side, described regulating part 41 and described elastic component are all contained in described host cavity 21a, between the flange 41a that described elastic component is compressed in described regulating part 41 and described openend.When described pull bar 32 drives the workpiece of described sliding seat 21 on described support column 13, described soldering tip 24 contacts described workpiece when welding, described elastic component produces resistance, described soldering tip 24 is stoped to oppress described workpiece, produce the restoring force of described sliding seat 21 away from described base 11, thus reduce the welding pressure of described workpiece, make described workpiece produce deformation when welding and reduce, improve the crudy of described workpiece.In present embodiment, during described soldering tip 24 welding work pieces, be between 0.1N ~ 5N to the welding pressure of described workpiece, welding pressure can be adjusted according to different product.Certainly, in other embodiments, described buffer gear can also comprise shock absorber part (not shown), described shock absorber part is arranged at described first chute and described second chute 122a respectively near described base 11 one end, and described shock absorber part is for providing described sliding seat 21 away from the restoring force of described base 11; If described sliding seat 21 arranges described guide post away from described base 11 side, then can also on described guide post sheathed Rectangular Spring, described Rectangular Spring is connected between described top board and described sliding seat, for providing described sliding seat near the restoring force of described top board.
Ultrasonic brazing unit of the present invention drives described pull bar to move along the glide direction of described sliding seat by described actuator, and be fixedly connected with described regulating part by described pull bar away from described actuator one end, described elastic component is connected with between described regulating part and described sliding seat, and then described pull bar drives described sliding seat to slide, described elastic component is utilized to provide described sliding seat away from the restoring force of described base, make described soldering tip when contacting the welding of described workpiece, described elastic component produces resistance to described soldering tip, and then regulate the welding pressure of described soldering tip, reduce the deformation of described workpiece when welding, improve the quality of described workpiece.
The above is the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications are also considered as protection scope of the present invention.

Claims (10)

1. a ultrasonic brazing unit, for welding work pieces, it is characterized in that, described ultrasonic brazing unit comprises detent mechanism, welding mechanism, driving mechanism and buffer gear, described detent mechanism comprises support, base and workbench, described workbench is fixed on described base, for placing described workpiece, described support is fixed on described base, be positioned at described workbench side, described welding mechanism comprises ultrasonic transformer, soldering tip and sliding seat, described sliding seat is slidably connected on described support, described sliding seat is arranged along close or away from described base direction slip, described ultrasonic transformer one end is fixed on described sliding seat, for being electrically connected supersonic generator, and produce mechanical oscillation, the vertical described sliding seat glide direction of described ultrasonic transformer length direction, described soldering tip is fixed on the described ultrasonic transformer other end, and relatively described workbench is arranged, for contacting described workpiece, described driving mechanism comprises actuator and pull bar, described actuator is fixed on described base, described pull bar is driven to move back and forth along the glide direction of described sliding seat, the glide direction of the parallel described sliding seat of described pull bar length direction, described buffer gear comprises elastic component and regulating part, described regulating part is fixed on described pull bar away from described actuator one end, described elastic component is connected between described regulating part and sliding seat, for providing described sliding seat away from the restoring force of described base.
2. ultrasonic brazing unit according to claim 1, it is characterized in that, described workbench comprises fixed block and support column, described fixed block is fixed on described base, described support column is fixed on described fixed block away from described base side, and extend along the glide direction of described sliding seat, described support column is provided with groove away from described fixed block one end, and described groove is used for securing the above workpiece.
3. ultrasonic brazing unit according to claim 1, it is characterized in that, described sliding seat comprises host cavity, the openend of described host cavity is positioned at described sliding seat near described base side, described regulating part and described elastic component are all contained in described host cavity, and described elastic component is compressed between described regulating part and described openend.
4. the explosion-proof syndeton according to Claims 2 or 3, is characterized in that, described workpiece is cylindrical battery block, and described groove is circular groove, and described groove is provided with breach.
5. ultrasonic brazing unit according to claim 4, is characterized in that, the amplitude of described soldering tip is 10 μm ~ 25 μm.
6. ultrasonic brazing unit according to claim 5, it is characterized in that, described welding mechanism comprises transducer, described transducer is fixed on described sliding seat, for being electrically connected the supersonic generator that ultrasonic frequency is 35K ~ 50.0K hertz, and converting the high frequency electrical signal of described supersonic generator to mechanical oscillation and be passed to described ultrasonic transformer.
7. ultrasonic brazing unit according to claim 6, it is characterized in that, described support comprises the first fixed head and the second fixed head that cross section is oppositely arranged, described first fixed head and described second fixed head are all fixed on described base, and cross section is all vertically arranged, described first fixed head is provided with near described second fixed head side the first chute vertically extended, described second fixed head is provided with the second chute that vertical direction extends near described first fixed head side, relatively described first chute of described second chute is arranged, described sliding seat is slidably connected between described first chute and described second chute.
8. ultrasonic brazing unit according to claim 7, is characterized in that, described first chute and described second chute are equipped with shock absorber part near described base one end, and described shock absorber part is for providing described sliding seat away from the restoring force of described base.
9. ultrasonic brazing unit according to claim 8, it is characterized in that, described support also comprises top board, described top board is fixed on described first fixed head and described second fixed head away from described base one end, the described sliding seat of gig is between described top board and described base, described top board arranges pilot hole, and described sliding seat is provided with the guide post extending to described pilot hole.
10. ultrasonic brazing unit according to claim 9, is characterized in that, described actuator is cylinder, and described elastic component is Rectangular Spring.
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Cited By (4)

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Publication number Priority date Publication date Assignee Title
CN106217851A (en) * 2016-07-11 2016-12-14 杨林 Novel ultrasonic welder
CN106695125A (en) * 2017-02-20 2017-05-24 上海海事大学 System and method for improving laser processing surface integrity of workpiece on line
CN109332926A (en) * 2018-10-12 2019-02-15 安徽正熹标王新能源有限公司 A kind of lead storage battery tab auto-manual adjusting spot welding device
CN110369852A (en) * 2019-08-05 2019-10-25 珠海冠宇电池有限公司 A kind of tab welding card slot and the method for carrying out tab welding using the card slot

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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CN110369852A (en) * 2019-08-05 2019-10-25 珠海冠宇电池有限公司 A kind of tab welding card slot and the method for carrying out tab welding using the card slot

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