Ukujova (Ukubumba) Ipulasitiki (noma ukujoxanga) kuyindlela lapho kuqale khona ipulasitiki ecijile isilinda sokushisa somshini wokubumba umjovo, bese kukhishwa isikulufa esiya emgodini wesikhunta esivaliwe. . Akugcini ngokukhiqiza ngokunemba okuphezulu, imikhiqizo esezingeni eliphakeme ngokukhiqiza okuphezulu, kepha futhi inezinhlobonhlobo zamapulasitiki kanye nezinhlelo zokusebenza. Ngakho-ke, ukubumba kokujola kungenye yezindlela ezibalulekile zokubumba ekusebenzeni kwepulasitiki.
Imisebenzi eyisisekelo yomshini wokubumba umjovo
Ukubumba komjovo kutholakala ngemishini yokubumba yomjovo.
Imisebenzi eyisisekelo yomshini wokuhlanganisa umjovo yile:
1. Ukushisa ipulasitiki ku-molten state;
2. Faka ingcindezi ephezulu yokuncibilika ukuze uyibangele ukuphuma bese ugcwalisa umgodi.
Inqubo yokujova / imishini
Ukubumba okuphambene kwama-thermoplastics ngokuvamile kwenziwa ngokugcwala okukhulu nokugcwaliswa. Imishini esetshenziselwa ukuhlanganisa futhi ukupholisa yakhiwa ngomshini wokubumba umjovo, isikhunta sokujoyina kanye nemishini yokusiza (njengokumiswa kwezinto).
Ithuluzi
Idivaysi yokujova ibona ikakhulukazi ubungcweti kanye nomumo kwinqubo yomshini wokubumba umjovo. Umjovo kanye nengcindezi - ukulondolozwa neminye imisebenzi. Idivayisi yokujova yohlobo lwesikulufa isetshenziswa kakhulu, futhi yakhiwa ngokuhlanganisa isikulufu somugqa kanye ne-umjovo Planger ibe isikulufa esisodwa.
Empeleni, kufanele kubhekiswe kuyo njengokubuyisela i-plunger yokujova kwe-plunger. Lapho kusebenza, ipulasitiki e-hopper iwela kusilinda sokushisa ngesisindo sayo. Lapho isikulufa sijikeleza, ipulasitiki iqhubekela phambili ngesikulufa groove. Ngalesi sikhathi, okuqukethwe kufuthelwa i-heater yangaphandle yesilinda sokushisa, futhi ingaphakathi libuye ligundiwe. Ukushisa okukhiqizwe yimikhawulo yokusika futhi izinga lokushisa likhuphuka libe yisimo esibunjiwe.
Ngokugcina impahla ekugcineni kwesilinda esifudumele, amandla okuphendula (umfutho wangemuva) akhiqizwa yilezi zinto acindezela isikulufa emuva emuva, futhi ukushintshwa komkhawulo kusetshenziselwa ukunciphisa inani lokubuya. Lapho ususa isikhundla esithile, isikulufa siyeka ukujikeleza, ngaleyo ndlela sinqume (ukukala) inani lomjovo kanye.
Ngemuva kokukhishwa kwesikhunta kupholile, uma umkhiqizo usukhishwe, isikhunta sivaliwe futhi futhi inqubo yokujova isiqalisiwe. Ngalesi sikhathi, isilinda se-hydraulic (isilinda somjovo) sedivayisi yokujova sisebenzisa amandla esikhaleni, futhi ngaphansi kwengcindezi ephezulu, isikulufa siba yinduku yokudubula, futhi isiphelo saso sincibilike singena ku-mold kusuka ku-nozzle .
Idivaysi yokuwohloka kwesikulufa yakhiwa isikulufa, umgqomo, i-nozzle kanye nedivayisi yokushayela. Isikulufa somjovo ngokuvamile sihlukaniswe izingxenye ezintathu: ukondla, ukucindezelwa, kanye namamitha, isilinganiso sokucindezela singu-2 ~ 3, kanye nesilinganiso se-aspect singu-16 ~ 18.
Lapho ukuncibilika kukhishwe ku-nozzle, ingxenye yokuncibilika izongena emuva emuva nge-broove yesikulufa ngenxa yamandla okusabela ngokuncipha kwesaba amandla okuphendula ancipha. Ukuvimbela lokhu, i-valve yesheke inamathiselwe ekugcineni kwesikulufa. Kwi-Hard Polyvinyl Chloride, kusetshenziswa inhloko ye-conical screw ikhanda.
Umgqomo uyingxenye yesikulufa esilayisha futhi yenziwa ngokuvimbela ukushisa. Yenziwe ngensimbi ephezulu yokungamelana nengcindezi. Kufakwe amasongo okushisa kagesi kagesi engxenyeni yokugcwala komgqomo ukushisa okuqukethwe umgqomo. Izinga lokushisa lilawulwa yi-thermocouple ukunikeza upulasitiki lokushisa okufanele.
I-nozzle inguquko phakathi komgqomo kanye nesikhunta, esifakwe nge-coil ehlukile yokushisa ngoba iyingxenye ebalulekile yopulasitiki incibilike ngqo. Ngokuvamile, ukubumba komjovo kusetshenziswa ama-nozzles avulekile. Nge-polyamines ephansi ye-viscosines, kusetshenziswa ama-nozzles we-valve valve.
Ukujikeleza kwesikulufa seDrayivu kungatholakala ngemoto kagesi noma ngemoto ye-hydraulic, futhi ukunyakaza okubuyisayo kutholakala ngokucindezela kwe-hydraulic.
Amapharamitha womshini wokubumba umjovo abonakala ngedivayisi yomjovo: Inani lokujova libhekisela kwinani eliphakeme lomshini wokubumba umjovo olwabangeni ngesikhathi ngasinye, noma ngevolumu kokuncibilika kuncibilike;
Ukucindezela komjovo kubhekisele ekucindezelweni okusetshenziselwa isigaba sesiphambano somgqomo ngesikhathi somjovo; Ijubane lomjovo lisho ijubane elishukumisayo lesikulufa ngesikhathi somjovo.
Insiza yokubumba
Ngaphezu kokuqeda isenzo sokuvula nokuvala kwesikhunta, umsebenzi oyinhloko wedivayisi yokubamba isikhunta ukumelana nengcindezi ephezulu yokuncibilika okufakwe kubumba okwanele ukukhiya isikhunta futhi uyivimbele ekuvuleni.
Ukuthi indlela yokubopha nje yokuphambanisa noma i-hydraulic noma i-hydraulic mechanical, ukuvulwa okubumbana nokuvalwa kufanele kube nezimo, ukugcina isikhathi, okusheshayo futhi kuphephile.
Ukusuka kwizidingo zobuchwepheshe, isikhunta sokuvula nokuvala kufanele sibe nomphumela wokubukelwa. Ijubane eligijimayo lethempulethi kufanele lihambe kancane futhi lihamba kancane lapho libopha isikhunta, futhi lihamba kancane futhi lihamba kancane lapho livula isikhunta. Ukuze uvikele ukulimala ku-isikhunta nezingxenye.
Amandla asetshenziswa kusibumba ngesikhathi senqubo yokwakha ukugcina isikhunta sivaliwe sibizwa ngokuthi amandla okuqhuma, futhi inani laso kufanele libe likhulu kunomphumela wengxenye ye-cavity kanye nengxenye yengxenye yengxenye (kufaka phakathi umgijimi wengxenye). Ingcindezi esejwayelekile e-cavity ngokuvamile iphakathi kuka-20 no-45 MPA.
Njengoba umugqa wamandla we-clamping force ubonise usayizi womkhiqizo wokubumba womshini wokuhlanganisa umjovo, amandla amakhulu omshini wokuhlanganisa umjovo ukukhombisa ukucaciswa komshini wokubumba umjovo, kepha kukhona nobudlelwano obujwayelekile phakathi kwe amandla amakhulu kanye nenani lomjovo.
Kodwa-ke, ukumelwa kwama-mold classing Force Force akubonisi ngokuqondile umthamo womkhiqizo ofakiwe, futhi akusikho lula ukusebenzisa. Abakhiqizi abaningi emhlabeni basebenzisa i-Clamping Force / ivolumu yokujova okufanayo ukukhombisa ukucaciswa komshini wokubumba umjovo, wevolumu yomjovo, ngemishini ehlukene. Kunesilinganiso esijwayelekile sokuqhathanisa, ivolumu yomjovo we-theory lapho umjovo iphindwa i-100MPA, okungukuthi, umthamo wokujova okufanayo = ivolumu yomjovo we-theoretical
Uhlelo lokulawula
Uhlelo lokulawula i-Hydraulic lomshini wokuhlanganisa umjovo luhlukaniswe ikakhulukazi ohlelweni olujwayelekile lweHydraulic Control, uhlelo lokulawula lwe-servo kanye nohlelo lokulawula olulinganayo.
Ngenxa yobunzima bohlelo lwe-hydraulic, uhlelo lwendima ye-valve kawoyela ebanzi luyathathwa njengesibonelo ukukhombisa uhlaka. Izici zalolu hlelo yilezi: Kukhona izindawo zokulawula ukugeleza nezingcindezi zokwesaba okulingana ohlelweni lwesekethe kawoyela (i-electromagnetic ngokulinganayo flow valve noma i-electromagnetic flow flow reverve valve).
Ukugeleza okulinganiswe kwamandla kagesi anikezwe kanye namandla okulingana namandla kazibuthe Ijubane, ijubane lesikulufo, ijubane lokuvula nelivala kanye nengcindezi yomjovo. Ukubamba ingcindezi. Isikulufa torque. Isihlalo sokujova i-Trust Rejert Force. Ingcindezi yokuvikela isikhunta isiteji esisodwa, i-multi-level noma chapless.
