Inqubo yokubumba igalelo iyinkimbinkimbi, futhi kunezici eziningi ezithinta ikhwalithi yemikhiqizo, ngokuvamile ehlanganisa ukuma kwemikhiqizo, ukusebenza kwezinto ezingavuthiwe kanye nemingcele yenqubo yokucubungula ukubumba.Nakuba kunezici eziningi ezithinta ukusebenza komkhiqizo, lapho izidingo zomkhiqizo nezimo zenqubo zinqunywa, ikhwalithi yomkhiqizo ingathuthukiswa ngokushintsha izici ezinomthelela, ezingafeza inhloso yokunciphisa ukusetshenziswa kwezinto ezingavuthiwe, ukunciphisa ukukhiqizwa. isikhathi nokuthuthukisa ukusebenza komkhiqizo.
1, Uhlobo lwezinto
Izakhiwo ezahlukene kanye nezinhlobo zezinto zokusetshenziswa kwe-resin zizokwenza ubuchwepheshe bokucubungula nokubumba kanye nemishini kushintshe.Inkomba yokuncibilika, isisindo samangqamuzana kanye nezakhiwo ze-rheological zezinto zokusetshenziswa ze-resin zizothinta ukubunjwa kwemikhiqizo, ikakhulukazi esigabeni se-extrusion se-billet, ukuncibilika kwe-fluidity yezinto eziluhlaza kuzokwenza i-billet ibe lula ukukhiqiza i-sag phenomenon, izoholela odongeni. ukujiya kwemikhiqizo izacile futhi ukusatshalaliswa okungalingani.
2, Ukuma komkhiqizo
Njengoba ukubukeka kwemikhiqizo yokubumba i-blow kuya ngokuya kuyinkimbinkimbi, okuholela emikhiqizweni yokubumba i-blow endaweni ngayinye yesilinganiso sokunwetshwa kwe-blow kuhlukile.Unqenqema lwe-convex, isibambo, ikona nezinye izikhundla zomkhiqizo ngenxa yokuguquguquka komumo kukhulu ngokuqhathaniswa, ubukhulu bodonga lomkhiqizo kufanele bube buncane, ngakho-ke enqubweni yokubunjwa kokuphefumula ukwandisa le ngxenye yodonga lwe-billet.Ukubonakala kwemikhiqizo yezimboni kuyinkimbinkimbi kakhulu, enamakhona amaningi kanye nemiphetho ye-convex.Isilinganiso sokushaywa kwalezi zingxenye sikhulu kunezinye izingxenye eziyisicaba, futhi ukujiya kodonga kuncane kakhulu, ngakho-ke ukujiya kokusabalalisa kwemikhiqizo ebunjiwe yegalelo elingenalutho akufani.
3, Ukunwetshwa kwesikhunta kanye nokunwetshwa okuqondile kwesonto
Esinye sezixhumanisi eziyinhloko endleleni yokubumba i-hollow blowing ukwakheka kwe-extrusion ye-blank.Usayizi nokujiya kokungenalutho kunquma ngokuyisisekelo ubukhulu nokuqina kodonga lomkhiqizo.Ukwenzeka kokuncibilika okuqondile kwesandiso kanye nokunwetshwa kwesikhunta kuzokhiqizwa kunqubo yokwenza i-billet.Isandiso esime mpo se-billet siwumphumela wamandla adonsela phansi ayo, okwenza ubude be-billet bukhule futhi ukushuba nobubanzi buyancipha.Lapho izinto eziluhlaza zishiswa futhi zincibilika yi-extruder, ukuguqulwa kwe-viscoelastic okungeyona i-linear kwenzeka lapho impahla ikhishwa ngekhanda, okwenza ubude be-billet bufinyeze futhi ukushuba nobubanzi kukhule.Enqubweni ye-extrusion ne-blow molding, lezi zenzakalo ezimbili zokunwetshwa okuqondile kanye nethonya lokukhulisa isikhunta ngasikhathi sinye, okwandisa ubunzima bokubumba igalelo, kodwa futhi zenza ukusatshalaliswa kokuqina komkhiqizo akufani.
4. Izinga lokushisa lokucubungula
Izinga lokushisa lokucubungula i-HDPE ngokuvamile liyi-160 ~ 210 ℃.Ukushisa kokucubungula kuphezulu kakhulu, kuzokwenza uhlobo lwe-billet sag phenomenon lubonakale, ukusatshalaliswa kodonga alufani, kodwa ubuso bomkhiqizo buyoba bushelelezi;Ukushisa kwekhanda lokufa kufanele kube eduze ngangokunokwenzeka ekushiseni kwesigaba sokushisa.Izinga lokushisa lomlomo wendebe kufanele libe phansi ngokufanele kunalelo lekhanda lokufa, elinganciphisa ithonya lokwandiswa kwesikhunta se-parison.
5. Izinga le-extrusion
Ngokukhula kwesivinini se-extrusion, ukukhuliswa kwesikhunta esikhulu se-billet, ubukhulu be-billet buzokhula.Uma isivinini se-extrusion sihamba kancane, uma i-billet ithatha isikhathi eside isisindo sayo, yilapho i-sag phenomenon ye-billet ibucayi kakhulu.Isivinini sokukhipha sishesha kakhulu, sizobangela uhlobo lwe-billet shark yesikhumba, okungathí sina kuzoholela ohlotsheni lokuqhekeka kwe-billet.Ijubane le-extrusion lizothinteka ngesikhathi sokuphefumula, isivinini esisheshayo sizonciphisa isikhathi sokuphefumula, singenza umkhiqizo ungakhiwa.Isivinini se-extrusion sizothinta ubuso nodonga lomkhiqizo, ngakho-ke ibanga lejubane le-extrusion lidinga ukulungiswa njalo.
6, Isilinganiso sokushaywa nokunwetshwa
Ukuncibilika kwendawo yangaphakathi nangaphandle ye-blank kuzoshaywa futhi kwandiswe ngokushesha ekubunjweni futhi kusondele ebusweni besikhunta kuze kube yilapho sekupholisiwe futhi kwakhiwe.Okungenalutho okunobubanzi obukhulu ngaphakathi kwesikhunta kuzobhekana nokucindezeleka okukhulu (isilinganiso phakathi kobubanzi besikhunta esinobukhulu obukhulu kanye nobubanzi bokungenalutho ngalesi sikhathi isilinganiso sokuphefumula).Ukuvuza komoya kulula ukwenzeka ngesikhathi sokuphephetha nokuvuvukala kwesimo sebhodlela esikhulu, okuholela ekuhlulekeni kokuphephetha nokubumba.Ukubukeka komkhiqizo kuthinta kakhulu isilinganiso sokuqhuma ngesikhathi sokubunjwa kokushaywa.Uma uvuthela imikhiqizo enesimo esingavamile, isilinganiso sokuphefumula akufanele sibe sikhulu kakhulu, ngaphandle kwalokho kulula ukuholela ekuqhumeni okuncibilika.
7. Ukushaya ingcindezi nesikhathi
Ngenqubo yokubumba i- blow, igesi ecindezelwe ingenza i-billet ishaye futhi yakhe futhi ibambelele ngaphakathi kwesikhunta.Isivinini sokwenza i-billet sinqunywa ukucindezela kwegesi.Lapho ukucindezela kwegesi kukhulu kakhulu, isivinini sokuguqulwa kwe-blank siyashesha, okuzokwenza indiza ibe yingxenye ye-blank ngokushesha eduze kwangaphakathi kwesikhunta, ukuze izinga lokushisa elingenalutho linciphe ngaphansi kwethonya lesikhunta. , futhi okungenalutho kwakhiwa kancane kancane, okungakwazi ukuqhubeka nokukhubazeka.Ngalesi sikhathi, ngenxa yokuguquguquka kwesimo esikhulu, ingxenye yekona ye-billet ayizange ihlanganiswe nesikhunta, futhi ukuguqulwa kuyaqhubeka, okuholela ekusabalaliseni okungalingani kodonga lomkhiqizo.Uma ukucindezela kwegesi kuncane kakhulu, ukubunjwa komkhiqizo kunzima, futhi ngenxa yokuthi ukucindezela okubamba ukucindezela kuncane kakhulu, i-billet izoncipha futhi ayikwazi ukuthola imikhiqizo engcono, ngakho-ke kuyadingeka ukulawula ukucindezela kwegesi ngokunengqondo lapho ushaya.Ingcindezi evunguzayo yemikhiqizo engenalutho ngokuvamile ilawulwa ngo-0.2~1 MPa.Isikhathi sokushaya sinqunywa ngokuyinhloko isikhathi sokubumba, isikhathi sokubamba ingcindezi kanye nesikhathi sokupholisa somkhiqizo.Uma isikhathi sokuphefumula sisifushane kakhulu, sizokwenza isikhathi sokubumba somkhiqizo sifushane, akukho ukucindezela okwanele okubamba kanye nesikhathi sokupholisa, i-billet izokwehlela ngokusobala ngaphakathi, ubuso buba bunzima, buthinte ukubukeka komkhiqizo, ngisho nokungakwazi. kwakheka;Uma isikhathi sokuphefumula siside kakhulu, umkhiqizo ungaba nokubukeka okuhle, kodwa uzokwandisa isikhathi sokukhiqiza.
8, Izinga lokushisa lesikhunta nesikhathi sokupholisa
Ukusikwa kwedayizi ngokuvamile kwenziwa ngemikhiqizo yensimbi enokuqina okukhulu, ngakho kudinga ukuba nomthelela omuhle kakhulu wokupholisa.Izinga lokushisa lesikhunta liphansi kakhulu lizokwenza ukusika kwesikhunta kuphole ngokushesha, akukho ductility;Ukushisa okuphezulu kuzokwenza ukupholisa kwe-billet akwanele, ukusika kwesikhunta kuzoba mncane, umkhiqizo we-shrinkage phenomenon uyabonakala lapho kubanda, okwenza umkhiqizo uguquke kakhulu.Isikhathi sokupholisa sinde, ithonya lokushisa kwesikhunta kumkhiqizo lincane kakhulu, ukuncipha akubonakali;Isikhathi sokupholisa sifushane kakhulu, i-billet izoba nesenzakalo esicacile sokuncipha, indawo yomkhiqizo izoba nzima, ngakho-ke kuyadingeka ukulawula ngokunengqondo izinga lokushisa lesikhunta nesikhathi sokupholisa.
9, Isivinini sesikulufu
Isivinini se-screw sizothinta ikhwalithi ye-billet nokusebenza kahle kwe-extruder.Ubukhulu besivinini se-screw bunqunyelwe izinto zokusetshenziswa, ukuma komkhiqizo, usayizi kanye nokuma kwesikulufu.Uma ijubane elijikelezayo liphansi kakhulu, ukusebenza kahle kokusebenza kwe-extruder kuyancipha ngokusobala, futhi isikhathi sokwelula esiqondile se-billet side, okuholela ekusabalaliseni okungalingani kodonga lomkhiqizo.Ukwandisa isivinini sokujikeleza kunciphisa isikhathi sokusebenza futhi kwandisa ukusetshenziswa kwamandla.Ngesikhathi esifanayo, ukukhuphuka kwesivinini sesikulufu kungathuthukisa izinga lokugunda isikulufu kumpahla eluhlaza futhi kuthuthukise ukubukeka komkhiqizo.Kodwa isivinini se-screw akufanele sibe phezulu kakhulu, ngoba isivinini siphezulu kakhulu sizokwenza izinto ezingavuthiwe ekhanda futhi umlomo wendebe uhlale ufushane kakhulu, ukusatshalaliswa kwezinga lokushisa akufani, ukushuba kodonga lwe-billet kuyathinteka, bese kuba nomthelela ekubukekeni komkhiqizo.Ijubane elishintshashintshayo ngokwedlulele lizophinde likhulise amandla okungqubuzana, likhiqize ukushisa okuningi kungabangela ukuwohloka kwezinto zokusetshenziswa, kungase kuvele mkhuba wokuncibilika kokuqhekeka.
Isikhathi sokuthumela: Nov-19-2022