Kunezindlela ezahlukahlukene zenqubo yokubumba ye-TPU:ukubumba umjovo, i-blow molding, i-compression molding, i-extrusion molding, njll, phakathi kwayo ukubunjwa komjovo kuvame kakhulu.
Umsebenzi wokubumba umjovo ukucubungula i-TPU ezingxenyeni ezidingekayo, ezihlukaniswa zibe inqubo engapheli yokubumba kwangaphambili, umjovo kanye nokukhipha ngezigaba ezintathu.
Kunezinhlobo ezimbili zemishini yokubumba umjovo, uhlobo lwe-plunger nohlobo lwesikulufu, futhi umshini wokubumba umjovo wohlobo lwesikulufa uyanconywa ngoba unamandla okuhlinzeka ngesivinini esifanayo, i-plasticization kanye nokuncibilika.
TPU Material Molding Izimo
Izimo ezibaluleke kakhulu zokubumba ze-TPU izinga lokushisa, ingcindezi kanye nesikhathi esithonya ukuhamba kwe-plasticizing kanye nokupholisa.Lezi zindlela zokunquma zizoba nomthelela ekubukekeni nokusebenza kahle kwengxenye ye-TPU.Uma usebenzisa izimo ezinhle zokuphatha, umphumela kufanele ukhiqize izingxenye ezimhlophe ezihambisana ne-beige.
Izinga lokushisa
Amazinga okushisa adinga ukulawulwa kunqubo yokubumba i-TPU izinga lokushisa lomgqomo, izinga lokushisa lombhobho kanye nezinga lokushisa lesikhunta.Amazinga okushisa amabili okuqala ngokuvamile athinta ukwenziwa kwepulasitiki nokugeleza kwe-TPU, futhi izinga lokushisa lakamuva lithinta ukupholisa kwe-TPU.
a.Izinga lokushisa lomgqomo
Inketho yezinga lokushisa lomgqomo lihlotshaniswa nokuqina kwe-TPU.Izinga lokushisa elincibilikayo le-TPU elinokuqina okuphezulu liphezulu, ngakho-ke ukuphela kwezinga lokushisa lomshini kudinga ukuphakama okwengeziwe.Izinga lokushisa lomphongolo lokuphatha i-TPU liyi-177 ~ 232 ℃.
Ukujikeleza kwezinga lokushisa lomgqomo ngokuvamile kusuka ohlangothini lwe-hopper kuya ku-nozzle, kancane kancane kuyakhuphuka, ukuze izinga lokushisa le-TPU likhuphuke kancane kancane ukuze kufezwe inhloso yokwenza ipulasitiki engaguquki.
b.Izinga lokushisa le-Nozzle
Ivamise ukuba ngaphansi kancane kunezinga lokushisa lomgqomo elilungile ukuvikela ukuncibilika kwe-TPU kusuka emlonyeni oqondile.
Uma umlomo wombhobho ozivalelayo usetshenziswa ukuze kukhishwe amathe, izinga lokushisa lombhobho lingalawulwa ngaphakathi kwezinga lokushisa eliphezulu lombhobho.
c.Izinga lokushisa lesikhunta
Izinga lokushisa lesikhunta linomthelela omkhulu ezintweni ezingaphakathi kanye nekhwalithi yemikhiqizo ye-TPU.Izici zayo Ezithonyayo zinqunywa izici eziningi ezifana nobucwebe be-TPU nosayizi womkhiqizo.
Izinga lokushisa lesikhunta livamise ukulawulwa ithuluzi lokupholisa izinga lokushisa elingaguquki njengamanzi, futhi izinga lokushisa lesikhunta nesikhutha lidinga ukuphakama okwengeziwe ku-TPU enobulukhuni obuphezulu kanye nokucwebezela okuphezulu.Izinga lokushisa lesikhunta lezinto ze-TPU livamise ukuba ku-10 ~ 60 ℃.
Uma izinga lokushisa lesikhunta nesikhutha lincishisiwe, lokho kuzodala ukuncipha komkhiqizo ngemuva kwezinguquko kanye nezinguquko ekusebenzeni kahle.
Ingcindezi
Inqubo yomjovo ingcindezi ihlanganisa i-plasticizing pressure (ingcindezi yangemuva) kanye nengcindezi yomjovo.
Inqubo yokudubula iwukucindezeleka kuhlanganisa ingcindezi ye-plasticizing (ingcindezi yangemuva) nokucindezela kokudubula.
Ukuthuthukisa ingcindezi yangemuva kuzokhuphula izinga lokushisa elincibilikayo, kwehlise izinga le-plasticizing, kwenze izinga lokushisa elincibilikayo lifane, hlanganisa into yomthunzi ngokulinganayo, futhi kukhiphe igesi yokuncibilika, nokho ngokuqinisekile kuzonweba umjikelezo wokubumba.Ukucindezeleka kwangemuva kwe-TPU ngokuvamile ku-0.3 kuya ku-4 MPa.
Ingcindezi yokudubula ingcindezi ehlobene ne-TPU ngaphezulu kwesikulufu, futhi umsebenzi wayo ukweqa ukumelana nokugeleza kwe-TPU ukusuka emgqonyeni kuya emgodini, ukuhlinzeka ngezinga lokuncibilika kokuncibilika, kanye nokuncibilika kuncane.
Ukumelana nokugeleza kwe-TPU kanye nezinga lokugcwalisa isikhunta nesikhutha kusondelene kakhulu nokuncibilika kwe-viscosity, futhi i-viscosity encibilikayo iqondile ihlobene nobulukhuni be-TPU kanye nezinga lokushisa elincibilikayo, okungukuthi, i-viscosity encibilikayo ayitholakali kuphela izinga lokushisa nengcindezi, futhi isungulwe ukuqina kwe-TPU. .
Ingcindezi yokudutshulwa ye-TPU ivamise ukuba ngu-20 ~ 110MPa.ingcindezi yokubamba ihlobene nengxenye yengcindezi yomjovo, futhi ingcindezi yangemuva idinga ukufakwa kuhlu ngezansi kwe-1.4 MPa ukwenza i-TPU yenziwe ipulasitiki ngokulinganayo.
Isikhathi
Isikhathi esidingekayo ukuqedela inqubo yokudubula sibizwa ngokuthi umjikelezo wokubumba umjovo.
Umjikelezo wokubumba uhlanganisa isikhathi sokugcwalisa isikhunta nesikhutha, isikhathi sokubamba, isikhathi sokupholisa kanye nezinye izikhathi ezihlukahlukene (ukuvulwa kwesikhunta nesikhutha, ukwethulwa kwesikhunta, ukuvala isikhunta, njalonjalo), okuthonya ngokuqondile ukusebenza kahle komsebenzi kanye nesicelo samadivayisi.
Umjikelezo wokubumba umjovo we-TPU ngokuvamile unqunywa ukuqina, ukujiya kwengxenye kanye nezidingo zomkhiqizo, umjikelezo wokubumba we-TPU nawo uxhumeke ezingeni lokushisa lokukhunta.
Izinga lomjovo
Izinga lokudubula ngokuvamile linqunywa ukucushwa kwezinto ezakhiwe ngomjovo we-TPU.Imikhiqizo enobuso obujiyile bokuphela idinga ijubane eliphansi lokudubula, kuyilapho ubuso obuncane budinga izinga lomjovo elisheshayo.
Ngemuva kokwelashwa kwemikhiqizo ebunjwe ngomjovo we-TPU
I-TPU ngenxa yokungalingani kwepulasitiki emgqonyeni noma amanani ahlukene okupholisa emgodini wesikhunta, imvamisa ikhiqiza ukwakheka okungajwayelekile, ukuqondanisa nokufinyela, okubangela ukuba khona kokungezwani kwangaphakathi entweni, egqame kakhulu emikhiqizweni enezindonga eziwugqinsi noma imikhiqizo izinsimbi zensimbi.
Ekugcinweni nasekusetshenzisweni, izinto ezinengcindezi yangaphakathi kanye nokukhathazeka kuvame ukulwa nokucekelwa phansi kwempahla, isiliva esingaphezulu kanye nokuwohloka nokuhlukaniswa.
Isevisi kulezi zinkinga ekukhiqizeni iwukuba lukhuni izinto.Izinga lokushisa eline-anneal lincike ekuqineni kwemikhiqizo eyenziwe nge-TPU, ukuqina okuphezulu kwezinga lokushisa lomkhiqizo liphakeme ngaphezu kwalokho, izinga lokushisa eliphansi lokuqina liyancishiswa;izinga lokushisa libize kakhulu lingase lenze umkhiqizo ujike noma ugoqe, futhi ube phansi ukuze kufinyelelwe inhloso yokuqeda ingcindezi yangaphakathi nokukhathazeka.
I-TPU annealing kufanele isetshenziswe isikhathi eside ezingeni lokushisa eliphansi, izinto ezinokuqina okuncishisiwe zingabekwa endaweni yokushisa amasonto amaningi ukuze kufezwe ukusebenza okuphumelelayo kakhulu.
Ukufakwa kwe-annealing kungenziwa esitofini somoya oshisayo, qaphela ukubekwa kwendawo hhayi endaweni lapho kushisa kakhulu nokuguqulwa komkhiqizo.I-Annealing ayikwazi ukuqeda ukungezwani kwangaphakathi kuphela, kodwa futhi kuthuthukisa amakhaya asebenza ngomshini.
TPU impahla yokufaka umjovo wokubumba
Ukuze uhlangabezane nezidingo zokusetha nokusebenzisa ukuqina, izingxenye ze-TPU zifakwa ngokufakwa kwensimbi.Ukufakwa kwensimbi kuqala kubekwe endaweni engaguquki kusikhunta somjovo kanye nesikhutha futhi ngemva kwalokho kujovelwe kuwo wonke umkhiqizo.
Imikhiqizo ye-TPUokufakiwe akunamatheli ngokuphephile ku-TPU ngenxa yomehluko wezakhiwo ezishisayo kanye nezinga lokufinyela phakathi kokufakwa kwensimbi ne-TPU.Inketho yokufaka le nkinga ukushisa kuqala okufakiwe kwensimbi, ngenxa yokuthi ngemva kokushisa kuqala okufakiwe kunciphisa izinga lokushisa. umehluko wezinga lokuncibilika, ukuze ukuncibilika okuzungeze okufakwayo kupholiswe kancane kancane phakathi nenqubo yokudubula, ukufinyela kufana kakhulu, futhi inani elithile lokufinyela kwempahla eshisayo lenzeka ukumisa ukucindezelwa okukhulu kwangaphakathi okuzungezile okufakiwe.
Ukubunjwa kwe-TPU inlay kulula ukuthola isibopho esiqinile, okufakiwe kungahlanganiswa nge-adhesive, ngemva kwalokho kushisiswe ku-120 ° C futhi emva kwalokho kujovwe.Ukwengeza, kufanele kukhunjulwe ukuthi i-TPU esetshenzisiwe akufanele ibe ne-lubricant.
Ukusetshenziswa kabusha kwezinto ezigaywe kabusha ze-TPU
Enqubweni yokucubungula ye-TPU, izinto ezilahlwayo ezifana nesiteshi sokusakaza esikhulu, iziteshi eziningi kanye nemikhiqizo engafanelekile zingagaywa kabusha futhi zisetshenziswe kabusha.
Kusukela emiphumeleni eqagelayo, umkhiqizo ogaywe kabusha ungamaphesenti angu-100 awuhlanganiswa nezinto ezintsha, uma izakhiwo zemishini zokwehla zingembi kakhulu, zingasetshenziswa ngokugcwele, kodwa ukuze kugcinwe izakhiwo ezingokomzimba nezomshini nezimo zomjovo zisezingeni eliphezulu kakhulu, ingxenye enconyiwe yezinto ezigaywe kabusha ku-25% kuya ku-30% yinhle.
Kumele kuqashelwe ukuthi izinto ezigaywe kabusha kanye nezinto ezintsha zokucaciswa kwezinhlobo ezifanayo zohlobo olufanayo, zingcolisiwe noma zidonsiwe ukuze kugwenywe ukusetshenziswa kwezinto ezigaywe kabusha, izinto ezigaywe kabusha akufanele zigcinwe isikhathi eside kakhulu, okungcono kakhulu ukusetshenziswa ngokushesha, okomile. .I-viscosity encibilikayo yezinto ezigaywe kabusha kufanele ngokuvamile yehliswe, futhi izimo zokubumba kufanele zilungiswe.
Isifinyezo
Lesi sihloko sihlaziya izici zezinto ze-TPU, izimo zokubumba, kanye nezindlela zokubumba, okuzosiza ngethemba ukuthi iphrojekthi yakho yezinto ezibonakalayo ye-TPU.
Isihloko sikhuluma nge-TPUngokweqilekanye nezinqubo zokubumba ze-TPU, ezidinga ulwazi oluphezulu lwabahlinzeki besikhunta sokujova nabahlinzeki bemikhiqizo yokubumba umjovo.
Uma unephrojekthi ebandakanya lezi zinqubo ezimbili, kunconywa ukuthi uqinisekise ukuthi imboni yokubumba isikhunta nomjovo wefekthri yomkhiqizo wokubumba inolwazi ekwenzeni imikhiqizo efanayo ukuze kuqinisekiswe ukuqaliswa okushelelayo kwephrojekthi.
UMA udinga usizo ngicelaXhumana nathi!
Isikhathi sokuthumela: Apr-23-2024