Ingxenye ngayinye yepulasitiki idinga inqubo ethile yokukhiqiza engahluka kakhulu kusuka komunye umkhiqizo kuya komunye.Ukubumba komjovo kusetshenziselwa ukwenza izingxenye eziqinile kuyilapho ukubunjwa kwe-blower kusetshenziselwa ukwenza imikhiqizo yepulasitiki enezindawo ezingenalutho, njengamabhodlela neziqukathi.
Ukubunjwa kwe-injection stretch blow kuhlanganisa ukubunjwa komjovo kanye nezinqubo zokubumba.Ipulasitiki iqala ukubunjwa ibe yi-preform eqinile, ukudala intamo yebhodlela enentambo.Uma i-preform ipholile ifakwa emshinini wokubunjwa owenziwe nge-stretch blow mold.I-preform ibe isishisiswe kabusha kusetshenziswa isifudumezi se-infrared bese sivuthela ebhodleleni lepulasitiki elinomoya ocindezelwe ngempoqo.
Inqubo Yokubumba Umjovo
Ukubumba komjovo kusetshenziselwa ukukhiqiza amanani aphezulu evolumu yemikhiqizo yepulasitiki esukela kusayizi kusuka ezingxenyeni ezinkulu kuya kwezincane ezidinga ukunemba kokunemba okuncane.
Kunezinhlobo eziningi zezindlela zokukhiqiza ezihlukaniswe ngaphansi kokubunjwa komjovo, njengokubunjwa komjovo we-thermoplastic, ukubumba ngaphezulu, ukubumba okufakiwe, ukubumba komgijimi obandayo kanye nokubumba komgijimi oshisayo.
I-Thermoplastic Injection Molding
Ukubumba komjovo we-Thermoplastic kusebenzisa i-thermoplastic polymer, okusho ukuthi ishintsha ibe yisimo esiwuketshezi uma ishisiwe.Ngokungafani namapulasitiki e-thermoset apholile abe okuqinile unomphela, ama-thermoplastic angadluliselwa oketshezini ngemva kokupholisa abe okuqinile.
Overmolding
I-overmolding, noma ukubumba okubili, kuyinqubo ehlanganisa isikhunta somjovo phezu kwenye into, njengensimbi, ukuze kuthuthukiswe ukusebenza noma ukuqina komkhiqizo.Inhlanganisela efana nenjoloba, ebizwa nge-thermoplastic elastomer (TPE), iyinto evame ukusetshenziswa kakhulu.Isibonelo sohlelo lokusebenza lwe-TPE overmold ukubamba isibambo kubhulashi lamazinyo.Ama-Overmolds angasetshenziswa futhi ukuvala imikhiqizo enezingxenye ezenziwe ngesikhunta semijovo eminingi.
Faka Ukubumba
Njengokweqisa, ukubumba okufakiwe kuyinqubo yokubumba umjovo ehlanganisa izingxenye ezimbili noma ngaphezulu zibe umkhiqizo owodwa oqediwe.Faka ukubumba komjovo kufaka ingxenye endaweni yesikhunta somjovo bese izinto zepulasitiki zigcwaliswa endaweni efakiwe.Ukufakwa kungangeza amandla kumkhiqizo futhi kuqede isidingo sezingxenye ezengeziwe zokunciphisa isisindo somkhiqizo.
Cold Runner Umjovo Molding
Isikhunta esigijimayo esibandayo sisebenzisa i-sprue ukugcwalisa abagijimi abafaka inhlaka yepulasitiki endaweni yokubumba.Ezibunjeni zamapuleti angu-2, isistimu yokugijima nezingxenye kunamathiselwe, futhi isistimu yokukhipha ingase isetshenziselwe ukuhlukanisa ipheya nesikhunta.Umgijimi obandayo anganciphisa imfucuza ngokugaywa kabusha nokugaya kabusha okokusebenza, kodwa lokhu kungase futhi kwenyuse ingqikithi yesikhathi somjikelezo. .Amasistimu womgijimi obandayo angasetshenziselwa izinhlobonhlobo eziningi zama-polymer futhi angavumela ukushintsha kombala okulula.
Isikhunta Somgijimi Esishisayo
Isikhunta esigijimayo esishisayo sisebenzisa inqwaba ukushisisa inhlaka yepulasitiki encibilikisiwe bese ithumela into ngesango ukuze igcwalise isikhunta.Izinhlobo ezimbili eziyinhloko zokubunjwa komgijimi oshisayo zifudumala ngaphandle futhi zifudumala ngaphakathi.Izibunjwa ezifudumalayo zangaphandle zingasetshenziswa nge-polymer engazweli kancane ekuhlukeni kokushisa kuyilapho isikhunta somgijimi esishisayo esishisayo sivumela ukulawula okungcono kokugeleza kwezinto.
Ngenxa yokuthi ukubumba komgijimi oshisayo akudingi ukusetshenziswa kwabagijimi, udoti ongaba khona uyancishiswa futhi ukugaywa kabusha nokugaywa kabusha kanye nenqubo yepulasitiki emsulwa akuthinti isikhathi esiphelele somjikelezo wokugijima.
Inqubo yokubumba iBlow
Phakathi nenqubo yokubumba igalelo, ipulasitiki eluhlaza ibunjwa ibe ishubhu elingenalutho elinendawo eyodwa evulekile ebizwa ngokuthi i-parison.Isonto licindezelwa esikhunjeni sensimbi esipholile bese umoya ocindezelwe uphoqeleka ukungena etilongweni.Lapho ipulasitiki eyakhiwe iphola futhi iqina, isikhunta sensimbi siyavula futhi sikhiphe umkhiqizo.
Isikhathi sokuthumela: Jun-10-2017