Inkqubo yokubumba ivuthela inzima, kwaye zininzi izinto ezichaphazela umgangatho weemveliso, ezibandakanya ngokubanzi imilo yeemveliso, ukusebenza kwezinto ezikrwada kunye neeparamitha zenkqubo yokubumba.Nangona kukho izinto ezininzi ezichaphazela ukusebenza kwemveliso, xa iimfuno zemveliso kunye neemeko zenkqubo zinqunywe, umgangatho wemveliso unokulungiswa ngokutshintsha izinto ezichaphazelayo, ezinokufezekisa injongo yokunciphisa ukusetyenziswa kwezinto eziluhlaza, ukunciphisa imveliso. ixesha kunye nokwandisa ukusebenza kwemveliso.
1, Uhlobo lwezinto
Iipropati ezahlukeneyo kunye neentlobo ze-resin ekrwada ziya kwenza iteknoloji yokucubungula kunye nokubumba kunye nezixhobo zitshintshe.Isalathiso sokunyibilika, ubunzima bemolekyuli kunye neempawu ze-rheological ze-resin ekrwada ziya kuchaphazela ukubunjwa kweemveliso, ngakumbi kwinqanaba le-extrusion ye-billet, ukunyibilika kwe-fluidity yezinto eziluhlaza kuya kwenza ukuba i-billet ibe lula ukuvelisa i-sag phenomenon, iya kukhokelela eludongeni. Ubuninzi beemveliso ezincinci kunye nokusabalalisa okungalinganiyo.
2, Ubume bemveliso
Njengoko inkangeleko yeemveliso zokubumba zivuthela ngakumbi nangakumbi, okukhokelela kwimveliso yokubumba ivuthela kwindawo nganye yomlinganiselo wokwandiswa kwemvuthu yahlukile.I-convex edge, i-handle, ikona kunye nezinye izikhundla zemveliso ngenxa yokuguquguquka kwemilo inkulu kakhulu, ubukhulu bodonga lwemveliso kufuneka bube buncinci, ngoko ke kwinkqubo yokubumba ukuvuthela ukunyusa le nxalenye ye-billet wall thickness.Ukubonakala kweemveliso zoshishino kunzima ngakumbi, kunye neekona ezininzi kunye nemiphetho ye-convex.Umlinganiselo wokuvuthela kwala malungu mkhulu kunezinye iindawo ezisicaba, kwaye ubukhulu bodonga buncinci kakhulu, ngoko ke ukusasazeka kweemveliso ezibunjiweyo ezibunjiweyo azifani.
3, Ukwandiswa kokungunda kunye nokwandiswa ngokuthe nkqo kweparison
Elinye lamakhonkco angundoqo kwindlela yokubumba i-hollow blowing kukwenziwa kwe-extrusion ye-blank.Ubungakanani kunye nobukhulu besithuba esingenanto bumisela ngokusisiseko ubungakanani kunye nobukhulu bodonga lwemveliso.Isenzeko sokwandiswa okuthe nkqo kwenyibilika kunye nokwandiswa kokungunda kuya kuveliswa kwinkqubo yokwenziwa kwebillet.Ukongezwa ngokuthe nkqo kwe-billet yimpembelelo ye-gravity yayo, eyenza ubude be-billet bunyuke kwaye ubukhulu kunye nobubanzi buyancipha.Xa izinto eziluhlaza zitshisa kwaye zinyibilika yi-extruder, i-viscoelastic deformation engabonakaliyo yenzeke xa izinto zikhutshwe ngentloko, okwenza ubude be-billet bufutshane kwaye ubukhulu kunye nobukhulu banda.Kwinkqubo ye-extrusion kunye nokubunjwa kokuvuthela, i-phenomena ezimbini zokwandiswa okuthe nkqo kunye nefuthe lokwandiswa komngundo ngaxeshanye, ukwandisa ubunzima bokubumba ukuvuthela, kodwa kwakhona ukwenza ukusabalalisa ubukhulu bemveliso ayifani.
4. Ubushushu bokuqhuba
HDPE processing ubushushu ngokuqhelekileyo 160 ~ 210 ℃.Iqondo lokushisa lokucubungula liphezulu kakhulu, liya kwenza uhlobo lwe-billet sag phenomenon lucacile, ukusabalalisa ubuninzi bodonga alufani, kodwa umphezulu wemveliso uya kuba lula;Ubushushu bentloko yokufa kufuneka busondele kangangoko kunokwenzeka kwiqondo lokushisa kwecandelo lokufudumala.Ubushushu bomlomo wendebe kufuneka bube ngaphantsi ngokufanelekileyo kunentloko yokufa, enokunciphisa impembelelo yokwandiswa kwe-mold ye-parison.
5, Ireyithi ye-extrusion
Ngokunyuka kwesantya se-extrusion, i-mold yandisa ukwanda kwe-billet, ubukhulu be-billet buya kwanda.Ukuba isantya se-extrusion sicotha kakhulu, ixesha elide i-billet ichaphazeleka bubunzima bayo, ibaluleke ngakumbi i-sag phenomenon ye-billet.Isantya se-Extrusion sikhawuleza kakhulu, siya kubangela uhlobo lwe-billet shark yesikhumba, ubuzaza luya kukhokelela kuhlobo lokugqabhuka kwebillet.Isantya se-extrusion siyakuchatshazelwa lixesha lokuvuthela, isantya esikhawulezayo siya kunciphisa ixesha lokuvuthela, singenza ukuba imveliso ingabikho.Isantya se-extrusion siya kuchaphazela umphezulu kunye nodonga lwemveliso, ngoko ke uluhlu lwesantya se-extrusion kufuneka lulungiswe rhoqo.
6, Umlinganiselo wokuvuthela ekwandiseni
Ukunyibilika kwendawo yangaphakathi kunye nangaphandle kwendawo engenanto kuya kubethwa kwaye kwandiswe ngokukhawuleza kwi-mold kwaye isondele kumphezulu we-mold de ipholile kwaye yenziwe.I-blank ene-diameter enkulu ngaphakathi kwi-mold iya kuba phantsi koxinzelelo olukhulu (umlinganiselo phakathi kobubanzi be-mold kunye nobukhulu obukhulu kunye nobubanzi be-blank ngeli xesha ngumlinganiselo wokuvuthela).Ukuvuza komoya kulula ukwenzeka ngexesha lokuvuthela kunye nokuvuvukala kobume bebhotile enkulu, okubangelwa ukungaphumeleli kokuvuthela kunye nokwenza.Ukubonakala kwemveliso kuchaphazela kakhulu umlinganiselo wokuvuthela ngexesha lokubumba.Xa uvuthela iimveliso ezinemilo engaqhelekanga, umlinganiselo wokuvuthela akufanele ube mkhulu kakhulu, ngaphandle koko kulula ukukhokelela ekuncibilikeni kokunyibilika.
7. Ukuvuthela uxinzelelo kunye nexesha
Kwinkqubo yokubumba i-blow, i-gas ecinezelweyo inokwenza i-billet ivuthe kwaye ifake kwaye ibambelele ngaphakathi kwi-mold.Isantya sokwenza i-billet sichongwa nguxinzelelo lwegesi.Xa uxinzelelo lwerhasi lukhulu kakhulu, isantya deformation deformation ukukhawuleza, nto leyo eya kwenza indiza inxalenye engenanto ngokukhawuleza kufutshane ngaphakathi kumngundo, ukuze iqondo lobushushu elingenanto lincitshiswe phantsi kwempembelelo yokubumba. , kwaye into engenanto yenziwa ngokuthe ngcembe, engakwazi ukuqhubeka nokukhubazeka.Ngeli xesha, ngenxa yokuguquguquka okukhulu kwemilo, inxalenye yekona ye-billet ayizange ifakwe kwi-mold, kwaye i-deformation iyaqhubeka, ibangele ukusabalalisa okungafaniyo kodonga lwemveliso.Xa uxinzelelo lwegesi luncinci kakhulu, ukubunjwa kwemveliso kunzima, kwaye ngenxa yokuba uxinzelelo lokubamba uxinzelelo luncinci, i-billet iya kuncipha kwaye ayikwazi ukufumana iimveliso ezingcono, ngoko ke kuyimfuneko ukulawula uxinzelelo lwegesi ngokufanelekileyo xa uvuthela.Uxinzelelo oluvuthelayo lweemveliso ezingenanto lulawulwa ngokubanzi kwi-0.2 ~ 1 MPa.Ixesha lokuvuthela lichongwa ngokuyintloko ngexesha lokubumba, ixesha lokubamba uxinzelelo kunye nexesha lokupholisa lemveliso.Ukuba ixesha lokuvuthela lifutshane kakhulu, liya kwenza ixesha lokubumba imveliso lifutshane, akukho xinzelelo lwaneleyo lokubamba kunye nexesha lokupholisa, i-billet iya kucutheka ngokucacileyo ngaphakathi, umphezulu uba rhabaxa, uchaphazela ukubonakala kwemveliso, nokuba awukwazi. yenziwe;Ukuba ixesha lokuvuthela lide kakhulu, imveliso inokubonakala kakuhle, kodwa iya kwandisa ixesha lokuvelisa.
I-8, iqondo lobushushu lokungunda kunye nexesha lokupholisa
Ukusikwa kwefa ngokuqhelekileyo kwenziwa ngeemveliso zentsimbi ezinobunzima obukhulu, ngoko ke kufuneka kube nesiphumo esihle sokupholisa.Iqondo lobushushu lokungunda liphantsi kakhulu liya kwenza ukuba ukusika kuphole ngokukhawuleza, akukho ductility;Ukushisa okuphezulu kuya kwenza ukupholisa kwe-billet akwanelanga, ukusika kwe-mold kuya kuba kuncinci, imveliso ye-shrinkage phenomenon ibonakala xa ibanda, isenza imveliso deformation enzulu.Ixesha lokupholisa lide, impembelelo yokushisa kwesikhunta kwimveliso incinci, i-shrinkage ayibonakali;Ixesha lokupholisa lifutshane kakhulu, i-billet iya kuba ne-shrinkage ecacileyo, indawo yemveliso iya kuba rhabaxa, ngoko ke kuyimfuneko ukulawula ngokufanelekileyo ubushushu bokubumba kunye nexesha lokupholisa.
9, Isantya sesikrufu
Isantya se-screw siya kuchaphazela umgangatho we-billet kunye nokusebenza kakuhle kwe-extruder.Ubungakanani besantya se-screw bukhawulelwe ngezinto eziluhlaza, imilo yemveliso, ubungakanani kunye nokumila kwesikrufu.Xa isantya esijikelezayo siphantsi kakhulu, ukusebenza kakuhle kwe-extruder ngokucacileyo kuncitshisiwe, kwaye ixesha lokwelula ngokuthe nkqo kwi-billet lide, elikhokelela ekuhanjisweni kokungalingani kodonga lwemveliso.Ukwandisa isantya sokujikeleza kunciphisa ixesha lokusebenza kunye nokwandisa ukusetyenziswa kwamandla.Ngexesha elifanayo, ukunyuka kwesantya se-screw kunokuphucula izinga le-shear ye-screw kwizinto eziluhlaza kunye nokwandisa ukubonakala kwemveliso.Kodwa isantya se-screw akufanele sibe phezulu kakhulu, kuba isantya siphezulu kakhulu siya kwenza izinto eziluhlaza entloko kwaye umlomo wendebe uhlale umfutshane kakhulu, ukuhanjiswa kweqondo lokushisa akufani, ubukhulu bodonga lwe-billet buchaphazeleka, kwaye emva koko ichaphazele inkangeleko yemveliso.Isantya sojikelezo esigqithileyo siya kwandisa amandla okukhuhlana, ukuvelisa ubushushu obuninzi kunokubangela ukuthotywa kwemathiriyeli ekrwada, kunokubonakala kunyibilika isenzeko sokuqhambuka.
Ixesha lokuposa: Nov-19-2022