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Umgaqo osebenzayo womatshini wokubumba inaliti zithini iimpawu zawo.

Umgaqo osebenzayo womatshini wokubumba ufana naleyo yesirinji yokutofa.Yinkqubo yokutofa iplastiki enyibilikisiweyo enyibilikisiweyo (okt viscous flow) kumngxuma wokungunda ovaliweyo ngoncedo lokutyhala ngesikrufu (okanye iplunger), kunye nokufumana imveliso emva kokunyangwa kunye nokubunjwa.

Ukubunjwa kwe-injection yinkqubo yomjikelo, umjikelo ngamnye ubandakanya ikakhulu: ukondla ubungakanani - ukunyibilika kunye neplastiki - inaliti yoxinzelelo - ukuzaliswa kwesikhunta kunye nokupholisa - ukuvulwa komngundo kunye nokuthatha iinxalenye.Emva kokukhupha inxalenye yeplastiki, vala i-mold kwakhona kumjikelo olandelayo.

Izinto zokubumba umatshini wokubumba umtofu: izinto zokubumba umatshini wokubumba zibandakanya ukusebenza kwebhodibhodi yokulawula, inkqubo yokulawula umbane kunye nokusebenza kwenkqubo ye-hydraulic.Khetha isenzo senkqubo yokutofa, isenzo sokutyisa, uxinzelelo lwenaliti, isantya sokutofa kunye nohlobo lokukhupha, jonga ubushushu becandelo ngalinye lomphanda, kwaye uhlengahlengise uxinzelelo lwenaliti kunye noxinzelelo lwangasemva.

Inkqubo yokubumba yomatshini wokubumba we-screw ngokubanzi: okokuqala, yongeza iplastiki yegranular okanye i-powdery kwi-barrel, kwaye wenze iplastiki inyibilike ngokujikeleza kwe-screw kunye nokufudumeza kodonga lwangaphandle lombhobho, emva koko umatshini uvala ukubumba. kwaye ihambisa isihlalo sokutofa phambili ukwenza umlomo kufutshane nesango lokungunda, kwaye ke ugalele i-oyile yoxinzelelo kwisilinda yokutofa ukutyhala isikrufu ukuya phambili, Ngoko ke, izinto ezinyibilikisiweyo zitofwa kumngundo ovaliweyo kunye nobushushu obuphantsi kwindawo ephezulu. uxinzelelo kunye nesantya esikhawulezayo.Emva kwexesha elithile kunye nokugcinwa koxinzelelo (ekwaziwa ngokuba yi-pressure hold) kunye nokupholisa, isikhunta sinokuvulwa kwaye imveliso inokukhutshwa ngaphandle (injongo yokubamba uxinzelelo kukuthintela ukujikeleza kwezinto ezityhidiweyo kwi-mold cavity, ukongeza. izinto eziphathekayo kumgodi wokubumba, kwaye uqinisekise ukuba umkhiqizo unobunzima obuthile kunye nokunyamezela komlinganiselo).Iimfuno ezisisiseko zokubumba inaliti yiplastiki, inaliti kunye nokubumba.I-Plasticization yisiseko sokuqonda kunye nokuqinisekisa umgangatho weemveliso ezibunjiweyo.Ukuze uhlangabezane neemfuno zokubumba, inaliti kufuneka iqinisekise uxinzelelo olwaneleyo kunye nesantya.Kwangaxeshanye, ngenxa yoxinzelelo oluphezulu lwenaliti, uxinzelelo oluphezulu lwenziwa kumgodi wokungunda (umndilili woxinzelelo kumgodi wokungunda uphakathi kwama-20 ~ 45MPa), ngoko ke kufuneka kubekho amandla amakhulu okwaneleyo okubamba.Inokubonwa ukuba isixhobo sokutofa kunye nesixhobo sokubambelela ngamalungu aphambili omatshini wokubumba inaliti.


Ixesha lokuposa: Dec-20-2021