Iimbangela kunye nezisombululo zeWarpage kunye noTshintsho lweeMveliso zePlastiki

I-Warpage deformation sesinye seziphene eziqhelekileyo ekubunjweni kwenaliti yeenxalenye zeplastiki zeqokobhe elibhityileyo.Uninzi lohlahlelo lwe-warpage deformation luthatha uhlalutyo lomgangatho, kwaye amanyathelo athathwe kwimiba yoyilo lwemveliso, uyilo lokubumba kunye neemeko zenkqubo yokubumba ukuphepha ukuguqulwa kwephepha le-warpage kangangoko kunokwenzeka.Ngokomzekelo, ezinye iimveliso zeplastiki eziqhelekileyo,iirakhi zezihlangu zeplastiki, iikliphu zeplastiki, izibiyeli zeplastiki, njl

Ngokumalunga nokubumba, indawo, ifom kunye nenani lamasango e-injection mold iya kuchaphazela imeko yokuzaliswa kweplastiki kwi-mold cavity, okubangelwa ukuguqulwa kweengxenye zeplastiki.Ekubeni i-warpage deformation inxulumene nokushwabana okungalinganiyo, ubudlelwane phakathi kwe-shrinkage kunye ne-warpage yemveliso ihlalutywa ngokufunda indlela yokuziphatha yokunciphisa iiplastiki ezahlukeneyo phantsi kweemeko zenkqubo ezahlukeneyo.Ibandakanya impembelelo yoxinzelelo lwe-thermal olushiyekileyo kwi-warpage deformation yeemveliso, kunye nefuthe lesigaba seplastiki, ukuzaliswa kwesikhunta kunye nenqanaba lokupholisa kunye nenqanaba lokudiliza kwi-warpage deformation yeemveliso.

Isiphumo sokushwabana kweemveliso ezibunjiweyo zenaliti kwisisombululo soguquko lwe-warping:

Unobangela othe ngqo we-warpage deformation yeemveliso ezibunjiweyo zenaliti ilele ekucuthekeni okungalinganiyo kwamalungu eplastiki.Uhlalutyo lwe-warpage, i-shrinkage ngokwayo ayibalulekanga.Into ebalulekileyo ngumahluko ekunciphiseni.Kwinkqubo yokubumba inaliti, ngenxa yolungiselelo lweemolekyuli zepolymer ecaleni kwendlela yokuhamba, ukushwabana kweeplastiki ezityhidiweyo kwicala lokuhamba kukhulu kunoko kwicala elithe nkqo, okukhokelela kwi-warpage kunye nokuguqulwa kwamalungu enaliti.Ngokuqhelekileyo, ukushwabana okufanayo kubangela kuphela utshintsho kumthamo wamalungu eplastiki, kwaye ukushwabana okungalinganiyo kuphela kunokubangela ukuguqulwa kwephepha lemfazwe.Umahluko phakathi kwezinga lokucutheka kweeplastiki zekristale kwindlela yokuhamba kunye nolwalathiso oluthe nkqo mkhulu kuneeplastiki ze-amorphous, kwaye izinga lokucutheka kwalo likhulu kunelo leplastiki ye-amorphous.Emva kokuphakama kwesantya esikhulu sokushwabana kweeplastiki zekristale kunye ne-anisotropy yokushwabana, utyekelo lokuwohloka kwe-warping deformation ye-crystalline crystalline inkulu kakhulu kuneeplastiki ze-amorphous.

Inkqubo yokubumba inaliti ye-Multistage ekhethiweyo ngokusekelwe kuhlalutyo lwejometri yemveliso: ngenxa yomgodi onzulu kunye nodonga oluncinci lwemveliso, i-mold cavity ngumtsha omde kunye nomncinci.Xa i-melt ihamba kule nxalenye, kufuneka idlule ngokukhawuleza, ngaphandle koko kulula ukupholisa kunye nokuqina, okuya kubangela umngcipheko wokuzalisa i-mold cavity.Inaliti yesantya esiphezulu kufuneka imiselwe apha.Nangona kunjalo, inaliti yesantya esiphezulu iya kuzisa amandla amaninzi e-kinetic ekunyibilikeni.Xa i-melt igeleza ukuya ezantsi, iya kuvelisa impembelelo enkulu ye-inertial, okubangela ukulahlekelwa kwamandla kunye nokuphuphuma komphetho.Ngeli xesha, kuyimfuneko ukunciphisa isantya sokuqhaqha kunye nokunciphisa uxinzelelo lokuzaliswa kwesikhunta, kunye nokugcina uxinzelelo oluqhelekileyo lokubamba uxinzelelo (uxinzelelo lwesibini, uxinzelelo olulandelwayo) ukwenza ukunyibilika kongezele ukuncibilika kwenyibilika. kumgodi wokungunda phambi kokuba isango liqina, elibeka phambili iimfuno zesantya sokutofa samanqanaba amaninzi kunye noxinzelelo lwenkqubo yokutofa.

Isisombululo kwi-warpage kunye nokuguqulwa kweemveliso ezibangelwa luxinzelelo lwe-thermal olushiyekileyo:

Isantya somphezulu wolwelo kufuneka sihlale sihleli.Inaliti yeglu ekhawulezayo iya kwamkelwa ukuthintela ukunyibilika ekukhenkceni ngexesha lokutofa kweglu.Ukumiselwa kwesantya se-glue injection kufuneka kuthathelwe ingqalelo ukuzaliswa ngokukhawuleza kwindawo ebalulekileyo (njengomjelo wokuhamba) kunye nokunciphisa kwindawo yokungena kwamanzi.Isantya sokutofa kweglue kufuneka siqinisekise ukuba siyayeka ngoko nangoko emva kokuba umgodi wokungunda ugcwaliswe ukuthintela ukugcwala, ukukhanya kunye noxinzelelo olushiyekileyo.