Panguva welding muitiro pamusoroultrasonic welder, chiratidzo chemagetsi chinopinza kune acoustic system chinoshanduka nekukurumidza, uye frequency kusiyanisa yakafara.Kuti uvandudze kukurumidza kuyerwa uye kurongeka, kutanga, matanho anotorwa kuti asarudze chip nekukurumidza kupindura nekukurumidza, uye nguva inogara yechikamu uye sefa link ye peripheral circuit ye chip inodzorwa kuita isingasviki 0.2 ms. , kuitira kuti ive nechokwadi chekuti nguva yese yekupindura yehurongwa iri pasi pe2 ms, uye kusangana nezvinodiwa zvekuona inokurumidza kuchinja chiratidzo chemagetsi.Kuti ive nechokwadi chekudiwa kweyakafara frequency band amplitude uye frequency maitiro eiyo system, RCK mhando resistor ine yakanyanya kurongeka uye kugadzikana kwepamusoro inosarudzwa, ine zvishoma parasitic inductance uye capacitance.Op-amp zvikamu zvichasarudzwa ne-open-loop magnification inopfuura 10 uye yakavharwa-loop magnification isingasviki 10. Nenzira iyi, flat amplitude-frequency curve inogona kuwanikwa kubva ku0 ~ 20 kHz ± 3 kHz.Izvi zvinotevera tsananguro pfupi yeimwe neimwe inoshanda module.
1.1 Kuyera kweVrms yevoltage RMS
Midziyo yekuyedza inogadzirwa mubepa rino inogona kuyera sinusoidal voltage siginecha nekukanganiswa neRMS ye0 ~ 1 000 V uye frequency ye20 kHz± 3 kHz.Iyo yekupinza voltage inobviswa nechiratidzo, iyo RMS kukosha inoshandurwa kuita AC / DC, uye yobva yagadziridzwa zvakaenzanirana kuita maviri ekubuda chiteshi.Imwe chiteshi inopihwa kune iyo 3-bit semi-digital mita yemusoro pane yekumberi pani ye tester, iyo inotaridza zvakananga kukosha kweRMS ye0-1 000 V voltage.Imwe yacho inoburitsa 0 ~ 10 V analog voltage siginecha kuburikidza neseri kwepaneru ye tester yekutora data uye kuongororwa nekombuta.
Iyo voltage chiratidzo inogona kubviswa nevoltage transformer, Hall element sensor kana photoelectric inoshandura mudziyo.Nzira idzi
Kunyangwe iyo yekuzviparadzanisa nevamwe yakanaka, inoburitsa madhigirii akasiyana ewaveform kukanganisa uye kuwedzera chikamu chekuchinja kweiyo 20 kHz chiratidzo chemagetsi, izvo zvinoita kuti zviome kuve nechokwadi chekuyera kwesimba uye chiyero cheAngle.Ichi chinyorwa CHINOSHANDISA iyo proportional amplifier kune voltage signal processing, iyo amplifier yekupinza yekupikisa ichishandisa 5. 1 M Ψ, chikamu ichi chinogona kuita kuti chiratidzo chekupinza chidzikisire, kuchengetedzwa kwepamusoro-soro kwemaseketi anotevera, uye semhedzisiro yekupinza kweamplifier kureba kupfuura iyo chiratidzo chekupokana kwe ultrasonic jenareta, ultrasonic jenareta inoshanda mamiriro haina kukanganisa.
AD637 inoshandiswa kune voltage RMS kuyerwa.Iyo AC-DC RMS inoshandura ine yakakwira upconversion kurongeka uye yakafara frequency bhendi, uye shanduko yakazvimirira kubva kune waveform.Iyo ichokwadi RMS inoshandura.Iyo yakanyanya kukanganisa ndeye 1%.Kana waveform factor iri 1 ~ 2, hapana imwe kukanganisa inogadzirwa.
1.2 Kuyerwa kweiyo inoshanda ikozvino kukosha
Ikozvino RMS yekuona dunhu rakagadzirwa mubepa rino rinogona kuona chiratidzo chazvino ne sinusoidal kukanganisa kwe 0 ~ 2 A, 20 kHz ± 3 kHz.Nekutora yakajairwa sampling kuramba yakabatana munhevedzano kune mutoro loop ye ultrasonic jenareta muFIG.1, iyo yazvino inotanga kushandurwa kuita voltage chiratidzo zvinoenderana nayo.Sezvo sampling kuramba iri chinhu chakachena chinodzivirira, haizounzi yazvino waveform kukanganisa kana yekuwedzera chikamu chekuchinja, kuitira kuti ive nechokwadi chekuyera kurongeka.Iyo voltage siginecha inoenderana neyazvino inoshandurwa kuita analog voltage siginecha neRMS AC-DC inoshandura AD637, iyo inobuda kudhijitari mita musoro uye komputa nenzira mbiri.Nheyo yekushandura yakafanana neyeRMS voltage conversion.
1.3 Kuyera kwesimba rinoshanda
Iyo inoshanda yekuyera simba chiratidzo inobva kune yakadzikira voltage uye I / V yakashandurwa chiratidzo muRMS kuyerwa module yevolti uye yazvino.Iyo musimboti weiyo simba kuyerwa module ndeye AD534 analog yekuwedzera uye sefa redunhu.Mushure mekunge magetsi epakarepo awedzerwa neazvino kuyerera kwekuwedzera, iyo yepamusoro-frequency chikamu inosefa kuti iwane chaiyo inoshanda simba.
1. 4 Kuyera kwechikamu mutsauko pakati pezvino uye voltage
Musiyano wechikamu pakati peiyo yekupinda voltage uye yazvino yeiyo ultrasonic transducer inoyerwa nekugadzira iyo yekupinda voltage uye masaini masaini mumaskweya mafungu kuburikidza ne zero-kuyambuka comparator, uyezve synthesizing mutsauko wechikamu kuburikidza neXOR logic kugadzirisa.Nekuti hapana chete mutsauko wechikamu pakati pevoltage neazvino, asiwo mutsauko uripo pakati pekutungamira uye lag, Ming Yang akagadzirawo dunhu renguva kuti rione inotungamira uye lag hukama.Kana uine chero chaunoda ndapota taura nesu.
1.5 Frequency kuyerwa
Frequency kuyerwa module inotora single chip microcomputer 8051, ichishandisa yakajairwa crystal frequency, crystal pulse sign count mune imwe nguva yechiratidzo, inogona kuitika mukati me1 ms, iyo frequency ndeye 20 kHz, kukanganisa hakusi kudarika 2 Hz.Mhedzisiro yekuyera mibairo inoburitswa ne16-bit mabhinari manhamba, inoiswa pakombuta I/O kadhi, uye inoshandurwa kuita decimal chaiyo frequency kukosha nesoftware programming.
Ultrasonic plastiki welding inopedzwa pasi pekukurumidza uye kumanikidzwa, uye welding process inoratidza maitiro ekukurumidza, akaoma, akaoma uye akawanda-parameter pesvedzero.Munguva uye mushure mekugadzira, kushushikana kwakanyanya uye deformation (welding residual deformation, welding shrinkage, welding warping) ichagadzirwa, uye kushushikana kwesimba uye welding kusara kushushikana kunogadzirwa muwelding process, asi zvakare kunokanganisa deformation yeworkpiece uye welding kuremara.
Izvo zvinokanganisawo weldability yeiyo workpiece chimiro uye brittle kuputsika simba, kuneta simba, goho simba, vibration maitiro uye zvichingodaro.Kunyanya kukanganisa welding workpiece machining kunyatsoita uye dimensional kugadzikana.Dambudziko rekupisa kushushikana kwekupisa uye deformation yakaoma kwazvo, pasina kufanoona, haikwanise kunyatsofanotaura uye kuongorora kukanganiswa kwewelding pamichina yemagetsi eiyo welder, uye kunyatsoongorora kunaka kwewelding.Panguva imwecheteyo, data yakawanda inokosha, kureva kukanganisa, haigoni kuyerwa zvakananga nenzira dzakajairika.
Isu tiri nyanzvi R & D, kugadzira, uye kutengesa kweultrasonic welding muchina, high frequency welding muchina, simbi welding muchina, Ultrasonic jenaretafekitari.Isu tinofara kugovera yedu ultrasound tekinoroji rutsigiro uye ultrasound kesi chiitiko.Kana iwe uine chirongwa chekubvunza, ndapota tiudze zvinhu uye saizi yezvigadzirwa zvako.Isu tichakupa iwe yemahara ultrasonic welding chirongwa.
Nguva yekutumira: Oct-20-2022