CN2776616Y - Ultrasonic press welding machine having pressure adaptive function - Google Patents
Ultrasonic press welding machine having pressure adaptive function Download PDFInfo
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- CN2776616Y CN2776616Y CN 200420150458 CN200420150458U CN2776616Y CN 2776616 Y CN2776616 Y CN 2776616Y CN 200420150458 CN200420150458 CN 200420150458 CN 200420150458 U CN200420150458 U CN 200420150458U CN 2776616 Y CN2776616 Y CN 2776616Y
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- soldering tip
- pressure sensor
- regulating device
- welding
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Abstract
The utility model discloses an ultrasonic welding press machine with pressure adaptive function, which is provided with a pressure negative feed back control system performing detection and adjustment to a welding knife and a transducer actively. Therefore, a welding head can be kept to work under appropriate pressure at all times. The consistency and the stability of the pressure in the process of welding can be ensured. The welding quality can be improved. Moreover, the impact to the welding knife from overlarge pressure can be avoided. The service life of the welding head can be improved.
Description
Technical field:
The utility model relates to a kind of ultrasonic wire bonding machine.
Background technology:
At present, the ultrasonic wire bonding machine is widely used in the wire bonds of electronic devices and components, integrated circuit etc., as the lead welding of big or middle pliotron, FET, various power model, big electric current fast recovery diode, Schottky triode, controllable silicon, IGBT, above device and particular semiconductor power device.Its operation principle is: from the ultrasonic wave (being generally 40-140KHz) of supersonic generator, produce dither through transducer, and be sent to the weldering cutter, when the weldering cutter contacts with lead-in wire and welded part, under the effect of pressure and vibration, metal surface to be welded phase mutual friction, oxide-film is destroyed, and plastic deformation takes place, and causes two pure metal coverings closely to contact, reach the combination of atomic distance, finally form firm mechanical connection.The mechanism that is made up of weldering cutter, transducer is commonly referred to as soldering tip.As shown in Figure 1, soldering tip 1 is supported on the support with fulcrum A, can be around the rotation in this fulcrum produces certain angle.Because during press welder work, the pressure of soldering tip weldering cutter is an important parameter, pressure is too big, causes the machinery strain of parts such as weldering cutter easily, reduces its service life; Pressure is little, directly influences welding quality, can cause rosin joint or not prison welding.Existing ultrasonic wire bonding machine has suitable operating pressure for guaranteeing the weldering cutter, can only be to pressure-regulating device 3 given predetermined values, but this predetermined value is a theoretic definite value, to pressure is simple open loop control, but during press welder work, soldering tip micro displacement or mechanical deformation all can cause the instability of operating pressure; Pressure-regulating device generally adopts electromagnet, also is subjected to the interference of external electromagnetic signal easily; When the magnetic gap of electromagnet armature and electromagnet changed, electromagnetic force can change a lot.Therefore, this operating pressure both can't quantitatively detect, more can't adjust automatically and make it remain on a suitable value always.
Summary of the invention:
The purpose of this utility model will overcome above-mentioned weak point of the prior art exactly, and a kind of ultrasonic wire bonding machine that can regulate operating pressure automatically is provided.
For this reason, the utility model proposes a kind of ultrasonic wire bonding machine, comprising: soldering tip 1, frame 4, pressure-regulating device 3 with pressure adaptive function; Described pressure-regulating device is arranged on the described frame, and drives described soldering tip; Described soldering tip point supporting is on described frame; It is characterized in that: also comprise negative feed back control system, its signal detection end is arranged at described soldering tip, and in response to the stressed variation of described soldering tip, signal output part is electrically connected with described pressure-regulating device, is used to control the apply power of described pressure-regulating device to soldering tip.
Described negative feed back control system comprises pressure-detecting device and governor circuit, the signal detection end of described pressure-detecting device is arranged on the described soldering tip, signal output part is to be electrically connected with described governor circuit input, and described governor circuit signal output part is electrically connected with described pressure-regulating device.Described pressure-detecting device comprises pressure sensor and is used for described pressure sensor detection signal is converted to the pressure inverting module of the signal of telecommunication; Described pressure sensor is integrated in soldering tip, and described pressure inverting module by signal output is connected with described control system input.Described pressure sensor adopts the rheostat pressure sensor.The preferred strain pressure transducer of described pressure sensor.Described strain pressure transducer tiling is fitted and is integrated in the surface of described soldering tip.
The beneficial effect that the utility model brings is:
Owing to set up the pressure negative feed back control system, the pressure that constitutes a closed loop is regulated negative feedback loop automatically, initiatively the pressure to the soldering tip transmission detects and adjusts, make soldering tip remain on work under the suitable pressure always, guarantee uniformity, the stability of welding process, improved welding quality; And avoid the impact of excessive pressure butt welding cutter, the service life of improving soldering tip greatly.
The preferred foil gauge of pressure sensor is easily realized, and is simple and reliable, with low cost, do not influence the cost of complete machine substantially; But performance of the present utility model is significantly improved, and cost performance is greatly improved.
Description of drawings:
Fig. 1 is that the pressure of prior art ultrasonic wire bonding machine is regulated schematic diagram;
Fig. 2 is that pressure of the present utility model is regulated schematic diagram;
Fig. 3 is the welding head structure schematic diagram of the utility model embodiment one;
Fig. 4 is the welding head structure schematic diagram of the utility model embodiment two;
Fig. 5 is the welding head structure schematic diagram of the utility model embodiment three;
Fig. 6 is the welding head structure schematic diagram of the utility model embodiment four.
The specific embodiment:
Also in conjunction with the accompanying drawings the utility model is described in further detail below by specific embodiment.
As shown in Figure 2, ultrasonic wire bonding machine of the present utility model is set up a negative feed back control system, comprises governor circuit and pressure-detecting device, and pressure-detecting device comprises pressure sensor 20 and pressure inverting module; Pressure sensor and soldering tip 1 become one.Soldering tip 1 is that bolster is arranged on the frame 4 with fulcrum A, and forming one can be around the lever of A bolster rotation.When weldering cutter 10 has pressure, transmission by transducer 11, soldering tip produces small deformation, the signal of telecommunication that on behalf of the deformation of tested pressure signal, pressure sensor will convert easy measurement to is exported, the pressure inverting module offers governor circuit after the signal of telecommunication of pressure sensor is amplified, nurses one's health, governor circuit and predetermined benchmark compare, if pressure and setting value are not inconsistent, then governor circuit is exported control signal controlled pressure adjusting device 3; Pressure regulation device comprises electromagnet 30 and electromagnet armature 31, electromagnet 30 is fixed on the frame 4 by fixed pedestal B, electromagnet armature 31 is installed in the soldering tip tail end, the magnetic force that electromagnet produces is controlled by governor circuit, pass through lever principle, change is delivered to the pressure of soldered thing by transducer, weldering cutter, makes welding pressure remain on the stationary value.Operating pressure for soldering tip has formed a degenerative closed-loop control system like this, carries out the self adaptation adjustment of soldering tip operating pressure.
Pressure sensor is the important component part in the pressure detection circuit, and pressure sensor can adopt resistance-strain type, inductance type, condenser type, piezoelectric type, magneto-electric, photo-electric etc. in the utility model.
Embodiment one: be preferred embodiment of the present utility model, as shown in Figure 3, the electromagnet of pressure-regulating device 3 is arranged at soldering tip top, pressure-detecting device signal detection end is selected strain pressure transducer for use, be foil gauge 20, the soldering tip surface is close in the foil gauge tiling, is integrated in the soldering tip afterbody, be beneficial to the stressed variation that soldering tip is trickle and be delivered on the foil gauge, the variation that the variation of weldering cutter pressure is converted to resistance value is measured.Foil gauge is the resistive element of being made by metallic conductor or semiconductor, and its resistance changes with the strain that pressure produced.Pressure sensor surface metal sheet transmits under the acting in conjunction of power when soldering tip 1 is subjected to comprising the power that pressure regulation device applies and welds cutter 1 work, deform, cause the variation of foil gauge resistance value, active force is big more, resistance variations is big more, and the pressure inverting module adopts the bridge measurement amplifying circuit, and governor circuit carries out computing relatively to pressure, the output control signal is given pressure regulation device, forms the negative-feedback automatic control loop of closed loop.
Embodiment two: as shown in Figure 4, this example is that with the difference of last example pressure sensor 20 is arranged at the belly of soldering tip 1.
Embodiment three: as shown in Figure 5, this example is that with the difference of embodiment one pressure sensor 20 is arranged at the bottom of the tail end of soldering tip, and pressure-regulating device 3 is arranged to the right angle with the relative position of soldering tip 1.
Embodiment four: as shown in Figure 6, this example is that with the difference of embodiment one pressure sensor is integrated in the middle part at soldering tip 1 top, and the electromagnet armature 31 of pressure-regulating device is installed on the belly of soldering tip 1, and electromagnet 30 is corresponding setting with armature below soldering tip.
Claims (8)
1. the ultrasonic wire bonding machine with pressure adaptive function comprises: soldering tip (1), frame (4), pressure-regulating device (3); Described pressure-regulating device is arranged on the described frame, and drives described soldering tip; Described soldering tip point supporting is on described frame; It is characterized in that: also comprise negative feed back control system, its signal detection end is arranged at described soldering tip, and in response to the stressed variation of described soldering tip, signal output part is electrically connected with described pressure-regulating device, is used to control the apply power of described pressure-regulating device to soldering tip.
2. the ultrasonic wire bonding machine with pressure adaptive function as claimed in claim 1, it is characterized in that: described negative feed back control system comprises pressure-detecting device and governor circuit, the signal detection end of described pressure-detecting device is arranged on the described soldering tip, signal output part is to be electrically connected with described governor circuit input, and described governor circuit signal output part is electrically connected with described pressure-regulating device.
3. the ultrasonic wire bonding machine with pressure adaptive function as claimed in claim 2 is characterized in that: described pressure-detecting device comprises pressure sensor and is used for described pressure sensor detection signal is converted to the pressure inverting module of the signal of telecommunication; Described pressure sensor is integrated in soldering tip, and described pressure inverting module by signal output is connected with described control system input.
4. pressure self-adapting ultrasonic press welder as claimed in claim 3 is characterized in that: described pressure sensor is the rheostat pressure sensor.
5. pressure self-adapting ultrasonic press welder as claimed in claim 4 is characterized in that: described pressure sensor is a strain pressure transducer.
6. pressure self-adapting ultrasonic press welder as claimed in claim 5 is characterized in that: described strain pressure transducer tiling is fitted and is integrated in the surface of described soldering tip.
7. as each described pressure self-adapting ultrasonic press welder among the claim 1-6, it is characterized in that: described pressure-regulating device (3) comprises electromagnet (30) and electromagnet armature (31), described electromagnet is fixedly installed on the described frame, and described electromagnet armature is arranged on the described soldering tip.
8. pressure self-adapting ultrasonic press welder as claimed in claim 3 is characterized in that: described pressure sensor is inductance type or condenser type or piezoelectric type or magneto-electric or electro-optical pickoff.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420150458 CN2776616Y (en) | 2004-09-07 | 2004-09-07 | Ultrasonic press welding machine having pressure adaptive function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420150458 CN2776616Y (en) | 2004-09-07 | 2004-09-07 | Ultrasonic press welding machine having pressure adaptive function |
Publications (1)
| Publication Number | Publication Date |
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| CN2776616Y true CN2776616Y (en) | 2006-05-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420150458 Expired - Fee Related CN2776616Y (en) | 2004-09-07 | 2004-09-07 | Ultrasonic press welding machine having pressure adaptive function |
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| CN (1) | CN2776616Y (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102139408A (en) * | 2010-09-07 | 2011-08-03 | 中国科学院长春光学精密机械与物理研究所 | Welding asynchronous control ultrasonic aluminum wire press welder |
| CN103084728A (en) * | 2011-11-04 | 2013-05-08 | 通用汽车环球科技运作有限责任公司 | Ultrasonic welding system with dynamic pressure control |
| CN104070286A (en) * | 2009-11-09 | 2014-10-01 | 通用汽车环球科技运作公司 | Method and system for online quality monitoring and control of vibration welding process |
| CN105834575A (en) * | 2015-02-03 | 2016-08-10 | 英飞凌科技股份有限公司 | Force measurement and force adjustment in ultrasonic-based machining process |
| CN105881885A (en) * | 2016-06-29 | 2016-08-24 | 东莞市钜大电子有限公司 | Ultrasonic welding auxiliary device |
| CN108982670A (en) * | 2018-08-23 | 2018-12-11 | 湖州市特种设备检测研究院 | A kind of electromagnetic ultrasonic probe of water pipe non-destructive testing |
| CN111421219A (en) * | 2019-01-09 | 2020-07-17 | 上海常衡电子科技有限公司 | Constant pressure welding device |
| CN112074400A (en) * | 2018-04-13 | 2020-12-11 | 精电舍电子工业株式会社 | Ultrasonic welding method, structure welded by ultrasonic welding method, and ultrasonic welding apparatus |
| CN113399813A (en) * | 2021-07-13 | 2021-09-17 | 北京半导体专用设备研究所（中国电子科技集团公司第四十五研究所） | Ultrasonic wave transducer suitable for press welder |
| CN114178669A (en) * | 2021-08-17 | 2022-03-15 | 上海艾瑞斯科技有限公司 | Battery tab ultrasonic metal welding quality on-line monitoring system and method |
-
2004
- 2004-09-07 CN CN 200420150458 patent/CN2776616Y/en not_active Expired - Fee Related
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104070286B (en) * | 2009-11-09 | 2016-08-24 | 通用汽车环球科技运作公司 | Online quality-monitoring and the method and system of control for vibration welding process |
| CN104070286A (en) * | 2009-11-09 | 2014-10-01 | 通用汽车环球科技运作公司 | Method and system for online quality monitoring and control of vibration welding process |
| CN102139408B (en) * | 2010-09-07 | 2012-11-07 | 中国科学院长春光学精密机械与物理研究所 | Asynchronous control ultrasonic aluminum wire press welder |
| CN102139408A (en) * | 2010-09-07 | 2011-08-03 | 中国科学院长春光学精密机械与物理研究所 | Welding asynchronous control ultrasonic aluminum wire press welder |
| CN103084728A (en) * | 2011-11-04 | 2013-05-08 | 通用汽车环球科技运作有限责任公司 | Ultrasonic welding system with dynamic pressure control |
| CN103084728B (en) * | 2011-11-04 | 2016-04-27 | 通用汽车环球科技运作有限责任公司 | There is the Ultrasonic Welding System that dynamic pressure controls |
| CN105834575A (en) * | 2015-02-03 | 2016-08-10 | 英飞凌科技股份有限公司 | Force measurement and force adjustment in ultrasonic-based machining process |
| CN105881885A (en) * | 2016-06-29 | 2016-08-24 | 东莞市钜大电子有限公司 | Ultrasonic welding auxiliary device |
| CN112074400A (en) * | 2018-04-13 | 2020-12-11 | 精电舍电子工业株式会社 | Ultrasonic welding method, structure welded by ultrasonic welding method, and ultrasonic welding apparatus |
| CN108982670A (en) * | 2018-08-23 | 2018-12-11 | 湖州市特种设备检测研究院 | A kind of electromagnetic ultrasonic probe of water pipe non-destructive testing |
| CN108982670B (en) * | 2018-08-23 | 2021-05-11 | 湖州市特种设备检测研究院 | Electromagnetic ultrasonic probe for nondestructive detection of water pipe |
| CN111421219A (en) * | 2019-01-09 | 2020-07-17 | 上海常衡电子科技有限公司 | Constant pressure welding device |
| CN113399813A (en) * | 2021-07-13 | 2021-09-17 | 北京半导体专用设备研究所（中国电子科技集团公司第四十五研究所） | Ultrasonic wave transducer suitable for press welder |
| CN113399813B (en) * | 2021-07-13 | 2022-05-03 | 北京半导体专用设备研究所（中国电子科技集团公司第四十五研究所） | Ultrasonic wave transducer suitable for press welder |
| CN114178669A (en) * | 2021-08-17 | 2022-03-15 | 上海艾瑞斯科技有限公司 | Battery tab ultrasonic metal welding quality on-line monitoring system and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20060503 Termination date: 20130907 |