Tsvagiridzo yekurasika kwejekiseni rekumanikidza mujekiseni rekugadzira muchina mbiya

Nhanganyaya

Injection molding process parameter setting imunda weruzivo rwakasimba uye dzidziso isina simba, uye zvakaoma kusimbisa [1] nokuda kwemuenzaniso wayo wemasvomhu chaiwo, nepo tekinoroji yekuongorora data inzira yekuwana ruzivo kubva munhoroondo data, izvo zvisingadi kuvakwa kwe theoretical yakaoma, saka rinoshandiswa zvakanyanya mundima iyi. Semuyenzaniso, Zhang Lingli et al. [2] akashandisa akawanda kudzokorodza ongororo kuti agadzire modhi yekudzoreredza yehukama pakati pekumanikidza jekiseni uye tembiricha yekuumbwa uye saizi yejometri yekuumbwaXie Peiping et al. [3] yakakurukura hukama huri pakati pekusarira kushushikana kwechigadzirwa nekudzidza mhando yemhata yekumanikidza curve yezvikamu zvakasiyana; SHEN C Y et al [4] yakagadziridza majekiseni maitiro ekudzikisa kuderedzwa kwevhoriyamu shrinkage yechigadzirwa chekuumba, uye [5] yakakurudzira nzira yekutarisa jekiseni kuburikidza netiweki modhi, kuitira kuti uwane kutariswa kwekukanganisa uye kufanotaura kwemhando.

Muchiitiko chekare chekugadzira, mainjiniya anogona chete kuwana iyo jekiseni yekumanikidza data mudhiramu yemuchina wekuumba jekiseni, saka kudzvanywa kwejekiseni mudhiramu kunowanzo kuenzana nekudzvanywa kwejekiseni mumhango yekuumbwa, ukuwo jekiseni dzvinyiriro yekurasikirwa mubhodhoro inofuratirwa. Nekuvandudzwa kwejekiseni molding tekinoroji, Vanowedzera uye vazhinji varapi vakaziva kuti iyo kiyi indekisi inokanganisa kunaka kwezvigadzirwa zvekuumba jekiseni yaive mold cavity jekiseni kudzvanywa kwete iyo jekiseni yekumanikidza mhinduro nemuchina wekuumba jekiseni., ndokutanga kuterera chidzidzo chejekiseni kudzvinyirirwa kurasikirwa mumushini wekuumba jekiseni, asi mashoma akarongeka data data uye mhedziso zvakataurwa.

Zvinoenderana nehunyanzvi hwekuvandudza tekinoroji mumunda wepurasitiki jekiseni molding, zvakasanganiswa neiyo indasitiri mamiriro, ikozvino mune jekiseni kumanikidzwa kurasikirwa tsvakurudzo, kuburikidza nenhevedzano yebvunzo kuti uwane data, uye kushandisa tekinoroji yekuongorora data kuongorora iyo jekiseni yekumanikidza kurasikirwa maitiro, kunatsiridza jekiseni pressure kurasikirwa kufanotaura chokwadi.

Zvishandiso uye mold yekudzidza

Iyo jekiseni yekuumba bvunzo inoitwa pane a 1 200 kN yemagetsi jekiseni rekuumba muchina, iyo inotora yakazara mota drive uye PLC, frequency kutendeuka uye servo control tekinoroji, uye inogona kuwana yakakwirira chaiyo kutonga. Kudzora kwejekiseni molding muchina wekugadzikana

Kuita kunogona kuve nechokwadi chekuvimbika uye kugadzikana kwemhedzisiro yebvunzo. Iyo mold inoshandiswa kutsvagisa iplate mbiri mold yeyakajairwa kuyerera chiteshi yakaiswa nepressure sensor pane peya yegedhi. Saizi yemhango ndeye 301 mm 57 mm 2.5 mm. Chigadzirwa chakaumbwa chine yunifomu yakakura uye chimiro chiri nyore, iyo inogona kuona iyo yakaderera mutengo uye yakanyanya kushanda jekiseni bvunzo maitiro.

Kufambisa kutora data uye kuongorora, iyo ComoDataCen yakashandiswa The te (yepakati yekuchengetedza sisitimu yer jekiseni process data), centralized collection uye processingIyo jekiseni pressure uye sensor pressure pagedhi rekuumbwa, jekiseni test model inoratidzwa muFigure 1.

nzira yekuedza

Sezvo chidzidzo chekuedza chakagadzirirwa kuongorora zvinhu zvinokanganisa kumanikidzwa panguva yejekiseni, kumanikidzwa

Jekiseni kumhanya, kunyunguduka tembiricha, uye zvinhu mhando se 3 zvinhu

Dzidzo dzakasiyana, ine imwe pfungwa yereferensi viscosity index (VI) pakati pe51.6~

327.2 (single point reference viscosity index iri patembiricha yakatarwa uye shear rate ye 1 000 / s) uchishandisa Muchinjikwa-WLFIyo viscosity yakaverengerwa neiyo viscosity modhi inogona kuratidza kuyerera kwechinhu kune imwe nhanho., ita bvunzo dzejekiseni pasi pemamiriro akasiyana ekunyungudusa tembiricha pane screw kumhanya kwe 20 ~ 180 mm/s, uye unganidza jekiseni kudzvinyirirwa uye jekiseni sensor kumanikidza pasi peakasiyana majekiseni bvunzo. Rondedzero yezvishandiso zvekutsvagisa inoratidzwa muTafura 1.

Yedza kuunganidzwa kwedata

Kuburikidza nenhevedzano yemajekiseni ekuumba bvunzo, iyo jekiseni yekumanikidza yemushini wejekiseni uye mold sensor pressure curve pasi pemamiriro akasiyana emaitiro emhando dzakasiyana siyana anowanikwa, uye jekiseni pressure curve V / P inoshandurwa

Iyo nguva yekumanikidza yakakosha PF 1 uye iyo die sensor pressure curve V / P chinja

Iko kusiyanisa kudzvinyirira kukosha kwePF 2 inowana Δ PF uye inofananidzira kurasikirwa kwejekiseni mubhodhoro remuchina wekuumba jekiseni muchikamu chekuzadza.. Sezvakaratidzwa muMufananidzo 2, the fill phaseInjection pressure kurasikirwa mubhodhoro yemushini wejekiseni Δ PF = 1 649-946= 703bar.

Zvekuverengera jekiseni pressure yekurasikirwa mubarrel stage, mushure mekumanikidzwa kurasikirwa, mutsauko pakati pekumanikidza kukosha PP2 Δ P ndiko kurasikirwa kwekumanikidzwa mukutsikirira kukosha mubhodhoro uye bhodhoro ndiko kurasikirwa kwekumanikidzwa mubhodhoro uye jekiseni kudzvinyirira kurasikirwa Δ PP = 999-732 = 267 bar..

Kuongororwa kwedata data

Edza kuunganidzwa kwedata

Kuburikidza nenzira dziri pamusoro apa, data rekuedza reboka rega rega rakarongwa uye tafura yedata rebvunzo rakavakwa. Zvose zve 132 mapoka ekuongororwa kwejekiseni akaitwa 6 zvinhu. Nekuda kwenzvimbo shoma, polycarbonate 2 inongorongedza data rekuyedza.

Linear regression analysis yedata rekuedza

Maererano bvunzo data, ΔPF uye PF 1, ΔPF uye ΔPF V, D PF, zvichiteerana, uye kunyunguduka tembiricha T, sezvinoratidzwa muMufananidzo 3 kuFigure 5.

Scatter plot ndeimwe yeanonyanya kushanda graphical nzira [6] kuona kana pane zvinobatanidzwa, mapatani, kana mafambiro pakati 2 nhamba dzakasiyana. Naizvozvo, kuenzanisa kwekuparadzira kuparadzirwa muMufananidzo 3 kuFigure 5 inoratidza kuti pane kuwirirana kwakasimba pakati peΔPF nePF 1 (patani yezvibodzwa zvakarongwa inorerekera kubva pasi kuruboshwe kuenda kumusoro kurudyi

Obkew, kureva kuti PF 1 kukosha kunowedzera ne Δ PF maitiro, zvichireva kuwirirana kwakanaka [5]), nepo jekiseni velocity V uye kunyunguduka tembiricha T haina kuwirirana.

Iyo Pearson's corelation coefficient musayenzi yechisikigo inoshandiswa zvakanyanya kuyera dhigirii rekubatana pakati pezviviri zvakasiyana., nezvinokosha pakati pe-1 uye 1. Pearl

Iyo yakaderera corelation coefficient inowanzo miririrwa netsamba R, ukoshi hwayo huri negative hunoratidza kusawirirana kwakashata pakati pezvinosiyana, uye kuva wenguva dzose kunoratidza kuwirirana kwakanaka, uye yakakura kukosha kwakakwana kweR, iyo yakakwirira kuwirirana kwe 2 seti dze data. Naizvozvo, iyo Pearson coefficient coefficient pakati peAFPF nePF 1, V, T, uye 3 data seti,

Fang, inoshandiswa kuyera dhigirii rekubatana pakati pe Δ PF uye 3 variables. R2=0.981, ΔPF uye V nhamba ye 1 data seti ye Δ PF uye PF 1

Zvinoenderana neR2=0.282 museti uye R2=0.534 muT data set, kuwirirana kwepamusoro kwakatemwa pakati pe Δ PF ne PF 1, uye ipapo nhamba yakawanikwa nekuderedza huwandu hwemakona echikanganiso

Kudzvinyirira kurasikirwa kwechikamu chechikamu. Kubva pane nzira yekuongorora kudzora, nokuda kwenhamba huru yenhamba

Data mathematical processing, sarudza kuwirirana pakati pezvinotsamira zvakasiyana uye zvimwe zvakazvimiririra zvakasiyana, gadzira yakanaka correlation regression equation (basa kutaura) [8], akagadzira jekiseni muchina mbiya jekiseni kumanikidza kurasikirwa kufanotaura maitiro, inogona kukwidziridza iyo jekiseni pressure yekumisikidza muyedzo maitiro, kubatsira ma technicians kukurumidza kuwana zvine musoro kudzvanya jekiseni nekumanikidza. Nekuda kwemamiriro ebvunzo mashoma, iyo jekiseni yekumanikidza kurasikirwa coefficient yejojo ​​jekiseni pakati pemajekiseni akasiyana ekugadzira majekiseni haina kudzidzwa uye kuongororwa., uye hazvina kujeka pakati pekumanikidzwa kurasikirwa coefficient yejekiseni barrel uye ma parameter emidziyo yemuchina wekuumba jekiseni.. Nekudzika kwetsvakiridzo, vakawanda vari mudhiramu

Zvinoenderana neiyo masvomhu optimization tekiniki yeakanakisa basa rekufananidza [(7]

diki square method),

Izvo zvinofurira zvinhu zvine chekuita nekurasikirwa kwejekiseni yekumanikidza zvichacherwa kuitira kukwana

Gadzirisa iyo yakanyanya kuenderana basa re Δ PF uye PF 1 dataset kuti uwane iyo Δ PF nezve PF 1 kutaura:

ΔPF =0.410 1×PF1 (1)

Formula (1) inogona kushandiswa semuenzaniso wekufanotaura kwekurasikirwa kwejekiseni yekumanikidza mudhiramu remuchina wejekiseni muchikamu chekuzadza. Mukugadzirwa chaiko, iyo jekiseni yekumanikidza kukosha mudhiramu yemushini wejekiseni inowanikwa nyore, saka iyi modhi ine yakafara applicability.

Saizvozvowo, zvinoenderana nedata rebvunzo yekudzidza, dhirowa dhizaini yekuparadzira yekumanikidza kubata nhanho, sezvinoratidzwa muMufananidzo 6, uye inokodzera yakanakisa kuenzanisa basa rekumanikidza kurasikirwa Δ PP mubhari uye yekumanikidza jekiseni kumanikidza PP1 data yakaiswa mukumanikidza kubata nhanho.:

ΔPP =0.258 9×PP1

Zvidzidzo zviri pamusoro zvinoratidza kuti kurasikirwa kwekumanikidza kwejekiseni hakuenderane nekumhanya kwejekiseni uye tembiricha yekunyungudika, asi inobatanidzwa zvakasimba nekumanikidzwa kwejekiseni mubhodhoro, uye inogona kutsanangurwa nekugadzira (fx) =kx basaKupfura kumanikidzwa kurasikirwa, x ndiyo yekumanikidza jekiseni remubhobho yemuchina wekuumba jekiseni, uye k ndiko kushaya simba kwekuita. Uyezve, equations (1) uye (2) ratidza chiitiko chakakosha cheakasiyana jekiseni kumanikidza kurasikirwa coefficient mudhiramu panguva dzakasiyana dzejekiseni (kuzadza uye kudzvinyirirwa kuchengetedza).

tag

Kwenguva refu, mainjiniya haana tsvakiridzo pamusoro pekurasikirwa kwejekiseni yekumanikidza mudhiramu remuchina wekuumba jekiseni. Kazhinji, iyo inoyerera simulation ongororo kazhinji inongotarisa kudzvanywa kwekufambisa mu mold, kuitira kuti fungidziro yekumanikidza jekiseni ibve. Nzira itsva yekurasikirwa kwejekiseni yekurasikirwa inoratidzwa: ΔP = k P, ΔP = k P; uko k k ndiko kuzadza uye kudzvinyirirwa kuchengetedza nhanhoPressure kurasikirwa coefficient yechikamu. Kubva pane nzira yekuongorora kudzora, nokuda kwenhamba huru yenhamba

Data mathematical processing, sarudza kuwirirana pakati pezvinotsamira zvakasiyana uye zvimwe zvakazvimiririra zvakasiyana, gadzira kuwirirana kwakanaka kweregression equation (basa kutaura) [8], kuvakwa kwebarrel jekiseni kumanikidza kurasikirwa kufanotaura maitiro, inogona kukwidziridza iyo jekiseni pressure yekumisikidza muyedzo maitiro, kubatsira ma technicians kukurumidza kuwana zvine musoro kudzvanya jekiseni nekumanikidza. Nekuda kwemamiriro ebvunzo mashoma, iyo jekiseni yekumanikidza kurasikirwa coefficient yejojo ​​jekiseni pakati pemajekiseni akasiyana ekugadzira majekiseni haina kudzidzwa uye kuongororwa., uye hazvina kujeka pakati pekumanikidzwa kurasikirwa coefficient yejekiseni barrel uye ma parameter emidziyo yemuchina wekuumba jekiseni.. Nekudzika kwetsvakiridzo, zvakawanda zviri mubharaZvikonzero zvinokonzeresa zvine chekuita nekurasikirwa kwejekiseni kurasikirwa zvichacherwa kuitira kukwanaUye kunatsiridza modhi yekufanotaura yekurasika kwejekiseni yekurasikirwa mubhodhoro remushini wekuumba jekiseni., uye kusimudzira kuvandudzwa kweiyo pressure solver yekuyerera simulation analysis software, uye kusimudzira otomatiki uye nehungwaru kusimudzira kwejekiseni process optimization nzira.

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