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Kuongororwa kwekushandiswa kwesimba kweiyo hydraulic system yemuchina wekuumba jekiseni uye kuongororwa kwayo kwekuenzanisa kwekuchengetedza simba mushure mekuwedzera kudzvanywa.

Kurume 13, 2023

Nhanganyaya

Jekiseni molding muchina chinhu chakakosha kugadzira muindasitiri yemapurasitiki. Simba rayo re hydraulic uye kurasikirwa kwesimba kune zvakakosha pamutengo wekugadzira uye mutengo wekushandisa weiyo system. Kushandiswa kwesimba kwakanyanya kwemajekiseni ekuumba majekiseni hakungokonzerese kutambisa zviwanikwa zvemagetsi, asi zvakare wedzera mutengo wekugadzira wemajekiseni ekuumba majekiseni. [1] China yekugadzira jekiseni rekugadzira muchina nhamba uye gore negore zvinobuda zviri pakati pepamberi penyika, uye jekiseni molding zvigadzirwa akaverengera pamusoro 30% yezvese zvigadzirwa zvepurasitiki, mitengo yakakwira yemagetsi yave chimwe chezvinhu zvakakosha zvinotadzisa kugadzirwa kweindasitiri yekuumba jekiseni. Kuti uvandudze kukwikwidza kwemusika wemajekiseni ekuumba majekiseni, vadzidzi vejekiseni rekugadzira muchina

Mukupindura kushevedzerwa kwenyika yekuchengetedzwa kwesimba uye kuderedza kubuda, mabhizinesi ekugadzira akaenderera mberi achiita shanduko yekuchengetedza simba yeiyo iripo simba rekushandisa system yemajekiseni ekuumba michina., kuvandudzwa kwesimba rekushandisa kwemajekiseni ekuumba majekiseni, uye kuderedza mari yekugadzira. [2] 。

Jekiseni kuumba muchina zvinoenderana nerudzi rwesimba sosi inogona kukamurwa kuita 3 mapoka, yakazara hydraulic, yakazara magetsi uye electro-hydraulic hybrid. Yese-yemagetsi jekiseni rekugadzira muchina mutengo wakakwira, uye chiyero chekushandisa chishoma, yazvino hydraulic jekiseni molding muchina ichiri chikuru chigadzirwa muindasitiri. Iyo general hydraulic jekiseni yekuumba muchina inotora inogara ichipombi uye yakaenzana kuyerera kwevhavhavhavha yekudzora system, iyo hydraulic pombi inobuda yakagadziriswa kuyerera mune yese jekiseni molding process, apo iyo system inoda kuyerera yakaderera, kumhanya kwemota haina kuchinjika, kuyerera kwakanyanya kunofashukira kudzokera kutangi, zvichiita kuti simba guru ripere. [3] Load sensitive hydraulic system inoshandisa inochinja-chinja pombi seyo system hydraulic pressure.

Iyo proportional flow control valve inorongwa pane inoshanduka pombi, simba rekubuda rinofananidzwa nekuchinja kwemutoro, kurasikirwa kwekufashukira uye kurasikirwa kwemaitiro ehurongwa kunoderedzwa kusvika pamwero mukuru, uye simba rekuchengetedza simba rinoshamisa. Kushandisa masaini emagetsi kuona miripo yakasiyana-siyana kunogona kuvandudza mashandiro ehurongwa, uye inokodzera jekiseni molding muchina system ine kuyerera kwekutonga, asi inoda seti yezvakaoma zvakasiyana-siyana zvekugadzirisa dhizaini, uye shanduko yekuchinja inoganhurwa nekona yeplate yekutsvaira, uye huwandu hwekugadzirisa kukurumidza hushoma. [4] Kuenzaniswa neyechinyakare vhoriyamu yekudzora tekinoroji, iyo inoshanduka frequency hydraulic tekinoroji inotora iyo yekudzora fomu ye frequency converter + mota + quantitative pombi, iyo ine maitiro ehupamhi hwekumhanya, ruzha rushoma uye kushanda kwehurongwa hwepamusoro. Nekuvandudzwa kwe servo control tekinoroji, ine zviri nani kudzora kururama, kumhanya kwekupindura uye kugona kuwandisa pane frequency control tekinoroji, uye yave iyo mainstream hydraulic control system yemuchina wekuumba jekiseni.

Peng Yonggang [10] Iyo servo mota inotyaira yakananga chiyero chepombi seyekutyaira sosi yemuchina wejekiseni wekuumba., uye iyo fuzzy synovium yekudzora zano inotsanangurwa kuti ione kutonga kwakaringana kweiyo system kudzvanywa uye nekumhanyisa mukuita jekiseni rekuumba., uye kuchengetedza simba kwakanaka. Liu et al.. [11-12] akaenzanisa simba resimba remhando shanu dze electro-hydraulic control schemes pamushini wekuumba jekiseni, uye zvigumisiro zvakaratidza kuti kushanda kwesimba kwegadziriro yakanaka, kurongeka kwekutonga kwakakwirira uye simba rekuchengetedza simba ndiro rakanakisisa. Xiao Wang et al [13] Iyo yekunyepedzera modhi yejekiseni chikamu cheyakakwira yekumhanyisa jekiseni yekuumba muchina inotangwa neAMESim. Iyo yekudzora zano uye nzira yekushandisa ye electro-hydraulic chinzvimbo-velocity servo system inounzwa. Iwo maviri-anosiyanisa kudzora kweiyo jekiseni chinzvimbo uye velocity inowanikwa. Wang Jianwait [14] Iko kushandiswa kwesimba kweiyo clamping system yemukati kutenderera maviri-plate jekiseni rekuumba muchina inoteedzerwa uye kuongororwa.. Iko kushandiswa kwesimba kwegadziriro kunogona kuderedzwa nekuderedza zvikamu zvekudzivirira valve, kutora yakakodzera hydraulic cylinder dhayamita uye kuwedzera accumulator. Xiong Wennan nevamwe [15] Iko kushandiswa kwesimba kwemajekiseni ekuumba muchina panguva ye clamping, kuvhura uye kubuda kunoongororwa mumhando nhatu dze hydraulic system. Zvigumisiro zvinoratidza kuti kushandiswa kwesimba kweiyo yakatarwa quantity pombi + proportional pressure flow valve system yakakwira, simba rekuchengetedza simba reproportional variable quantity pombi system inosiyana nehunyanzvi hwechigadzirwa, uye kuchengetedza simba kwepombi yakagadziriswa yakawanda + servo mota system yakanaka. Gao Junwei [16] Kuvavarira dambudziko rekufashukira kurasikirwa mu hydraulic system yemushini wekuumba jekiseni, chirongwa chepombi yegiya mbiri inotungamirwa neasynchronous mota inoratidzwa. Kuti usangane nekukasira kukuru kuyerera kudiwa kwejekiseni rekugadzira muchina, iyo yekumanikidza inoyerera yakavhara-loop control inogamuchirwa kuti ivandudze kutonga kwakaringana uye simba rekuchengetedza simba rehurongwa, uye yechinyakare hydraulic system yemuchina wekuumba jekiseni inogadziridzwa, iyo ine simba rakanaka rekuchengetedza simba.

Hydraulic control imwe-nzira vharafu kuyerera kugovera hydraulic mota inogona kuwana yakakwirira kushanda kumanikidza, kuitira kuti jekiseni rekugadzira muchina musimba repamusoro rinogona kuva [17]. Mubepa rino, high pressure hydraulic components inoshandiswa mu hydraulic system yemuchina wekuumba jekiseni.

Jekiseni kuumba muchina hydraulic system inoshanda kumanikidza, kuve nechokwadi chekuti simba rekubuda remamiriro akafanana, kuderedza jekiseni rekuumba muchina mukutenderera kwebasa rehurongwa hwekuyerera kudiwa, nepo ichidzikisa iyo hydraulic system hydraulic cylinder dhayamita saizi, kuderedza iyo system throttling kurasikirwa uye pombi pamwe chete nekumanikidza kurasikirwa chirongwa. Mubepa rino, iyo hydraulic jekiseni yekuumba muchina ine clamping simba re 1 200 kN inoshandiswa sechinhu chekutsvagisa, uye iyo hydraulic system yemuchina wejekiseni yepurasitiki inomisikidzwa uye inoteedzerwa nesoftware AMESim. Nokuderedza humburumbira dhayamita, kudonhedza kudonhedza kwemagetsi evharuvhu anoshandiswa nemagetsi, pombi uye sisitimu yekushandisa simba isati uye mushure meiyo hydraulic cylinder yakaderedzwa kuyerera uye yakawedzera kudzvanywa kwakafananidzwa nekudzidza simba rekuchengetedza simba reiyo hydraulic system yemushini wekuumba jekiseni..

 

Nekuda kwekuda kwesimba repamusoro remushini wekuumba jekiseni mune chaiyo inoshanda mamiriro, Kana kupfachukira kwemaitiro kuderera, inowanzodiwa kuisa chiyero chikuru chekuyerera. Mune yakakura kuyerera hydraulic system, kudonhedzwa kwemhepo yevhavha yevhavha uye kurasikirwa kwekumanikidzwa pamwe chete nepombi nzira yakakura, uye tembiricha yehurongwa inokwira uye ruzha zvakare inoperekedzwa nematambudziko, izvo zvinokonzera kuparara kwesimba rehurongwa.

Iyo hydraulic system yejekiseni yekuumba muchina ine hydraulic pombi, solenoid directional control valve, hydraulic cylinder uye hydraulic mota. Nekuti iyo IC tray ine huremu huremu, zvizhinji zve hydraulic components zvakawana high pressure, asiwo kune jekiseni rekugadzira muchina hydraulic system yekuvandudza kushanda kumanikidza kugadzira mamiriro. High pressure inogona kuwana yakakwira simba density uye yakakwira simba kubuda kweiyo hydraulic system, iyo inoenderana nezvinodiwa zve hydraulic system yemushini wekuumba jekiseni.

Theoretical ongororo yekushandiswa kwesimba kurasikirwa kwe hydraulic system yemushini wekuumba jekiseni

  1. 1 jekiseni rekuumba muchina hydraulic system kufashukira kuyerera kurasikirwa Tsika jekiseni rekuumba muchina hydraulic system inotora yakagadziriswa pombi inobuda kuyerera.

Iyo hydraulic system iri nyore uye yakavimbika, uye kubuda kunobuda kwepombi ye hydraulic inogara nguva dzose panguva yekugadzira jekiseni. Muchikamu chekuderera kudiwa kwehurongwa, mafuta anoyerera achidzokera kutangi kuburikidza nekufashukira, uye kurasikirwa kwekufashukira kwakakomba. Nekuti iyo IC tray ine huremu huremu, mazhinji ema hydraulic masisitimu emajekiseni ekuumba majekiseni anoshandisa proportional variable pombi control system kana servo mota system., iyo inogona kunyatso kugadzirisa kubuda kwe hydraulic pombi panguva yekuumbwa kwejekiseni uye kuderedza kurasikirwa kwehurongwa hwekuyerera.. Mukutenderera kwekushanda kwejekiseni rekugadzira muchina, kushandiswa kwesimba kwakanyanya uye nguva pfupi yekushanda, saka iyo servo control system inogona kuchengetedza 30% ~ 60% kushandiswa kwesimba kana kuenzaniswa neiyo proportional flow control valve system. [2] .2 Hydraulic system yejekiseni yekuumba muchina valve throttle pressure kurasikirwa

Panguva yekushanda kwejekiseni molding muchina, iyo hydraulic sosi inopfuura nepa electromagnetic control valve, Kuitira kupfupisa kutenderera nguva yejekiseni molding, chiyero chekuyerera kwegadziriro inowanzokwira mu hydraulic pressure cylinder, uye kubuda kwepombi ye hydraulic inoyerera kuburikidza ne electromagnetic control valve, iyo ine imwe throttle pressure kurasikirwa. Solenoid directional control valve mushure mekuvhurwa kwayo yakafanana neyetete-walled orifice throttle, saka iyo valve port throttle pressure inodonha inogona kuverengerwa kuburikidza neiyo orifice kuyerera-kumanikidza kudonha formula, fomula iri

Q1 = CdA rilodelta p ■ 2

Kupi: Q1 ndiyo valve port inoyerera; Cd ndiyo inoyerera coefficient of thin-walled orifice. A ndiyo nzvimbo ye orifice; Kuwanda kwemvura; Delta p ndiyo mutsauko wekumanikidza pamberi uye mushure mevhavha port, saka throttling simba kurasikirwa ndiko

Kuburikidza neiyo throttle orifice kuyerera-kumanikidza kudonha formula, throttle pressure

Drop delta p inoenderana nevhavha port kuyerera Q21, saka throttling simba delta P yakanangana negedhi kuyerera Q31. Kuderedza jekiseni rekugadzira muchina hydraulic system

Imwe neimwe electromagnetic inoshanda valve port throttling pressure inodonhedza kurasikirwa kwesimba, inofanira kupa pamberi kuderedza kuyerera kwehurongwa. Kuti uve nechokwadi chekuti simba rekubuda reiyo hydraulic system yemuchina wekuumba jekiseni haina kuchinjika kana kuyerera kwehurongwa kwakadzikira., zvakakosha kuwedzera kushanda kwekushanda kwe hydraulic system kuchengetedza kushanda kwemaitiro emagetsi.

  1. Mune hydraulic system yemuchina wekuumba jekiseni, iyo hydraulic sosi yakabatana kune solenoid directional control valve nepombi, uyezve kune iyo hydraulic actuator nepombi. sarudza

Iyo yakakura pombi dhayamita inogona kuderedza avhareji velocity, chengetedza iyo laminar kuyerera mamiriro, kuderedza kupikisa coefficient uye kuderedza kudzvinyirira kurasikirwa pamwe nepombi, asi zvakaoma kuronga pombi. Kana iyo pombi dhayamita idiki, avhareji velocity yepombi yakakura, izvo zvichaita nyore kutungamirira kune mhirizhonga mupombi uye kuwedzera kurasikirwa kwesimba munzira yepombi. Iyo yekuverenga formula yekurasikirwa kwekumanikidza pamwe nepombi ndeye

Deltap pipeline = λ × ρv2d2

Iko lambda ndiyo inopikisa coefficient munzira; L ndiko kureba kwepombi; D ndiyo dhayamita yepombi; Density ye hydraulic mafuta; V ndiyo avhareji velocity muchubhu. Iyo formula yekuverenga kuyerera velocity muchubhu ndeye

4Q2 v = π d2

Iyo Reynolds nhamba formula ndeye

Re = vd = 4Q2π

Pakati pavo, upu ndiyo kinematic viscosity yemafuta; Q2 inoyerera pombi. Iyo yekudzivirira coefficient λ inoenderana nekuyerera mamiriro muchubhu uye fomula iri

λ=

64 Re

 -0.25 0.3164Re

,Re <2320 ,3000<Re <10

5

 0.308 ,105<R<108 ( 0. 842 – lgRe ) 2 e

Kuti uderedze kurasikirwa kwe hydraulic pombi munzira, zvinodikanwa kuve nechokwadi kuti kuyerera kwenyika mupombi ndeye laminar kuyerera, saka kupikisa coefficient munzira ndeye λ = 64 / Re, uye fomu yekumanikidza kurasikirwa munzira inogona kuwanikwa.

64l p v 2 128π Q D p pombi = Tsvuku × 2 = p d4

Pasi pemamiriro ekuti pipeline dhayamita haina kuchinjwa, kurasikirwa kwekumanikidza pamwe nepombi kunoenzanirana nekuyerera kwepombi, uye kurasikirwa kwesimba pamwe nekudonha kwepombi kuderera kunoenzana neskweya yekuyerera kwepombi.

3 3. 1

AMESim Kutevedzera Model yeHydraulic System yePlastiki Injection Molding Machine

Simulation Parameters yeInjection Molding Machine Hydraulic System

Zvinoenderana neiyo hydraulic system schematic dhizaini yemuchina wekuumba jekiseni uye maparamendi ezvakabatana hydraulic components., kuitira kuongorora mashandisirwo emagetsi eiyo hydraulic system yemushini wekuumba jekiseni, Iyo modhi iri nyore, uye iyo yekufananidza modhi yejekiseni molding muchina hydraulic system inovakwa sezvakaratidzwa muFigure 2. Iyo modhi inoshandisa nhanho chiratidzo kutevedzera iyo servo mota kuti iwane inoshanduka yekumhanyisa kutonga pasi pemamiriro akasiyana ekushanda, kuitira kuti sisitimu yacho irege kuburitsa chiitiko chekufashukira. AMESim modhi yekutevedzera yekuongorora ma parameter akaiswa sezvakaratidzwa muTable 1. Maererano nekutevedzana kwejekiseni, iyo electromagnetic inoshanda valve yakaiswa sezvakaratidzwa muTable 2.

 

 

Panguva imwe, kuitira kutevedzera maitiro evhavha port throttling pressure drop, taura kuHuade WE6 mhando O matatu-nzvimbo ina-nzira solenoid directional control valve, Nekuda kweiyo valve port chimiro, apo chiyero chekuyerera chiri 60 L / min, iyo valve port P inoyerera ichienda kumuromo wevharuvhu A / B pressure inodonha ndeye 1.0MPa, uye kudonha kudonhedza kuchiteshi T ndeye 0.8MPa. Kuitira kurerutsa muenzaniso wekufananidza, kuyerera kwepamusoro kwevatatu-nzvimbo ina-nzira ye electromagnetic inoshandiswa valve inogadzirirwa 60 L / min, uye kudonha kwekumanikidza ndiko 1 MPa.

 

Mushure mekuisa iyo simulation parameters ye hydraulic system, iyo yekufamba curve yehydraulic cylinder yakaiswa.

Mutsara unoratidzwa mumufananidzo 4, uye kufamba kwekuvhara kufa kunopedzwa mukati 0 ~ 2 s, uye ipapo silinda inofamba inofamba ichienda 1 s nechishandiso chejekiseni, anoenzanisa muromo wescrew cylinder nejekiseni nozzle uye inoshandisa imwe simba rekubata remuromo. In 3 ~ 4 s, sikuruu, ichityairwa nemajekiseni maviri, inopinza zvinhu zvakanyungudutswa mugomba reforoma zvine simba guru, uye inobata kumanikidza kutonhora kweimwe nguva yenguva, kuitira kurerutsa maitiro ekufananidza, siya danho rekubata; ipapo mota yepremolding inoshanda uye inodzvanya jekiseni cylinder kumashure kugadzirira jekiseni rinotevera; 9 ~ 10 s yemukati chigaro displacement humburumbira retracts; uye wozodzora humburumbira kuti upedze kuvhura mold movement. Pasi pechiito che ejection cylinder, chigadzirwa chakapedzwa chinobudiswa mu mold, ipapo silinda inodzokororwa, uye ipapo silinda inodzokororwa, nokudaro kupedza kutenderera kwejekiseni.

 

  1. 2

Kuongororwa kweMagetsi Kushandiswa kweJekiseni Molding Machine

Imwe neimwe hydraulic actuator muchikamu chekushanda, kuyerera kunodiwa kwakasiyana, saizi yemutoro yakasiyana, iyo system pressure inochinjawo, kuitira kudzivirira iyo system kufashukira kuyerera, saka mukushanda kweiyo actuator stage, kuitira kuti iyo hydraulic sosi ipe kuyerera kwayo kunodiwa. Paunenge uchitsvaga pesvedzero ye hydraulic system pressure inodonha simba rekushandisa, kuitira kubvisa pesvedzero ye throttling speed regulation, kuve nechokwadi kuti kushanda nesimba uye kuyerera kwe hydraulic cylinder kunogara kuripo, yakaiswa mu hydraulic cylinder mass block modhi yehombe inofamba inonyorova, kuitira kuti iyo hydraulic cylinder inoshanda nyika kuchengetedza simba risingaperi.

Munyaya iyo iyo system haina kuburitsa mafashama, chiyero chekuyerera uye kudzvanywa kwepombi yekumanikidza yemvura mune yega yega nhanho yekufamba inoratidzwa muFigure 5. Mu clamping, pre-kuumba uye jekiseni danho, iyo yekupinza yekumanikidza uye kuyerera mwero weiyo hydraulic system yakakura, uye kuburikidza nekuongororwa kwekurasikirwa kwesimba kweiyo hydraulic system yemushini wekuumba jekiseni, zvinogona kuonekwa kuti muchikamu chikuru chekuyerera, kurasikirwa kwesimba kwekudonhedzwa kwesimba kwakakura. Panguva imwe, muyedzo yekutevedzera, kureba kwehumburu yemafuta ekuumbwa yakakura. , kumhanya kwenguva refu, saka kuyerera kwayo kunoda kuve kwakakura, kuvhura nekuvhara nzira yekufa, nezve 30% yekuyerera kwese kweiyo system yekuisa, kana sisitimu ichikwanisa kukwidziridza, kuderedza kuyerera kwe mold cylinder, inogona kunyatso kudzikisa iyo hydraulic system pressure inodonha simba rekushandisa, kunatsiridza simba resimba rejekiseni rekugadzira muchina hydraulic system.

 

Sezvakaratidzwa muMufananidzo 6, muchikamu chose chejekiseni, the clamping stage, iyo jekiseni nhanho uye premolding nhanho ine yakakura simba rekushandisa. Kuti udzidze kudonha kwekumanikidza kweiyo electromagnetic inoshanda valve uye kurasikirwa kwepombi munzira mu hydraulic system., isu tinotora mold yekuvhura nhanho yeyakavharwa hydraulic cylinder semuenzaniso. Humburumbira isina mhango pressure, iyo electromagnetic inoshanda valve port pressure yeV1, uye kudzvinyirirwa kwevhavha port P muV1 pamwe nekubuda kwekumanikidzwa kwe hydraulic pump line muFigure 2 anosarudzwa senzvimbo dzekutsvagisa dzekudzikira kudonha muchikamu chemafuta chinopinda cheiyo clamping hydraulic cylinder.. Kumanikidzwa kwenode imwe neimwe kunoratidzwa muFigure 7. Kuburikidza nemusiyano wekumanikidza wemanodhi ari pamusoro, iyo valve port pressure inodonha ndiyo 0.456 MPa, uye kurasikirwa kwekumanikidzwa pamwe chete 1 m mafuta pombi ndizvo 0.067 MPa. Kudonhedzwa kwekudzvanywa kweiyo simulated valve port iri padyo neiyo chaiyo. The theoretical value of pressure drop in the pipeline is 0. 058 MPa, iyo yakati kurei zvishoma pane yedzidziso. Kuburikidza nekuenzanisa pamusoro apa kunogona kuwanikwa, muhurongwa inoyerera yakakura nhanho, iyo valve orifice throttle pressure drop drop loss yakakura kudarika pombi iri pamwe nekurasikirwa, mupombi kureba, pamwe nekumanikidzwa kurasikirwa hakugone kuregererwa.

  1. 3 Simulation ongororo yemuchina wekuumba jekiseni hydraulic system kumanikidza kuwedzera formula ye throttle-pressure inodonha kuburikidza nevharuvhu orifice uye kudonha kudonha papombi.

Zvinogona kuoneka kuti iyo throttle pressure inodonha uye kudonhedza kudonhedza pamwe neiyo hydraulic system inogona kuderedzwa zvakanyanya nekudzikisa system kuyerera mwero.. Kuti usangane nemutoro wekutyaira uye kumhanya kwekushanda kwehydraulic cylinder, iyo inobudirira nzvimbo yebasa rekupfapfaidza inofanira kuderedzwa uye kushanda kwekushanda kunofanira kuwedzerwa kana kuyerera kwehurongwa kunoderedzwa.

Kuti uone kudzvanywa uye simba rekuchengetedza hurongwa hweiyo hydraulic system yemushini wekuumba jekiseni., iyo yaimbova silinda dhayamita yakashandurwa kubva pa70mm-35mm kusvika 50mm-28mm, kutora silinda yekuvhara semuenzaniso. Iyo inoshanda nzvimbo ye hydraulic cylinder yakaderedzwa kusvika hafu yenzvimbo yepakutanga ye sprinkler operation.. Mushure mekuverenga mold inoyerera muhafu yekuyerera kwepakutanga, kumanikidzwa kwebasa kwakapetwa kaviri, saka iyo yekuyamura vharafu kumanikidza yakawedzera kusvika 32MPa.

Mufananidzo 8 inoratidza kudzvanywa uye kuyerera kweiyo system isati yasvika uye mushure mekushandura dhayamita ye clamping hydraulic cylinder., Sezvinoonekwa kubva pamufananidzo, muvharo yekuvhara uye mold kuvhura nhanho, iyo system yekuisa kuyerera inoderedzwa, ukuwo kudzvanywa kwehurongwa kuchikwira, uye nzira yekuvhara mold, iyo system inoyerera inoderedzwa nehafu, ukuwo dzvinyiriro ichikwira kusvika kaviri yepakutanga, zvinoenderana nehuwandu hunotarisirwa. Zvisinei, mushure mekuwedzera, danho rekuvhara mold, iyo system inoshanda kumanikidza yakakwira, uye zvinotora imwe nguva kuvaka kudzvanywa, asi izvo hazvikanganisi iyo mold yekuvhara maitiro.

Mufananidzo 9 inoratidza kushandiswa kwesimba kweiyo system isati yasvika uye mushure mekumanikidza kweiyo clamping cylinder. Mune clamping uye kuvhura matanho, iyo system simba yakaderera pane iyo isati yawedzera kudzvanywa, uye kuderera kunenge 0.7kW, uye simba rinoderedzwa ne 7.5%. Mufananidzo 10 inoratidza kudzvinyirirwa kwenodhi yega yega muchikamu chemafuta chinopinza cheiyo clamping cylinder mushure mekuwedzera kudzvanywa, Kubva pamufananidzo, kudonha kwekumanikidza kubva kune hydraulic sosi kuenda kukamuri isina tsvimbo yehydraulic cylinder ndeye 0.138 MPa, izvo zviri pamusoro 70% zvishoma pane izvozvo kusati kwasimuka, uye kuyerera kwehurongwa kunoderedzwa nehafu, saka kudonha kudonha kwesimba kurasikirwa ndiko chete 15% of that pressure isati yasimuka, uye kushandiswa kwesimba kwegadziriro kunoderedzwa ne 85%. Apo kushanda kwekushanda kweimwe clamping cylinder inosimudzwa, kushandiswa kwesimba kwegadziriro kunogona kuponeswa ne 3.7%. Kana kushanda kwekumanikidza kweiyo yose hydraulic system cylinder inogona kusimudzwa, kushandiswa kwesimba kweiyo system pressure kudonha kuchaderedzwa zvakanyanya uye simba resimba rehurongwa richavandudzwa.

Nekuenzanisa kudonha kwekumanikidza pamberi uye mushure mekunge hydraulic cylinder yawedzerwa, dhayamita ye hydraulic cylinder inoderedzwa pasi pemamiriro ekuti vharafu inodzosera uye pombi haina kuchinjwa.. Panguva imwe, kuve nechokwadi kuti mutoro uye kumhanya kumhanya zvinoramba zvisina kuchinjwa, iyo system pressure ichakwira, uye kuyerera kunodiwa kwehurongwa huchaderedzwa, nokudaro kuderedza kudonhera kwekumanikidza pakati pe hydraulic pump uye hydraulic actuator, kuderedza iyo system pressure inodonha simba rekurasikirwa, uye kudzikisa tembiricha yemafuta system kusimuka uye ruzha.

4 Mhedziso

1) Iko kuyerera kweiyo hydraulic system yemushini wekuumba jekiseni inoshanduka mukutenderera

Zvikuru, kushandiswa kwe servo control tekinoroji kunogona kugadzirisa iyo system mafashama chiitiko, Zvisinei, sisitimu yacho ine nhamba huru yemavharuvhu anotungamira uye pombi refu, uye kushandiswa kwekushanda kwehurongwa kwakaderera. Muchikamu chepamusoro-simba, iyo system ine yakakura yekupinda kuyerera kudiwa, uye kune kurasikirwa kwekumanikidza pamwe nevhavha port uye pombi, izvo zvinokonzera hurongwa kuderedza kushandiswa kwesimba, ruzha uye kupisa kwakanyanya.

2) kuburikidza neiyo orifice pressure drop formula uye pombi iri padhuze nekumanikidza kurasikirwa formula, iyo valve port pressure inodonha simba kurasikirwa inoenderana nekuyerera kuburikidza ne3rd square, pombi iri padhuze nekudonha kwesimba kurasikirwa kunoenzanirana nekuyerera nemuskweya, uye kuburikidza nekuenzanisa bvunzo kuti uone kuwirirana.

3) Kuti uvandudze kushanda kwesimba kweiyo hydraulic system yemuchina wekuumba jekiseni, iyo system yekupinda inoyerera inogona kuderedzwa nekuwedzera kushanda kweiyo hydraulic actuator, uye kudonha kwekumanikidza pamwe nevhavha chiteshi uye pombi inogona kuderedzwa.

 

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