Ngenxa yokuba ukufa kokubumba okwahlukeneyo kuye kwasetyenziswa kwiinkalo ezininzi, kukhatshwa kuphuhliso lobugcisa bokwenziwa kobuchwephesha bokubumba kule minyaka, kuye kwakho utshintsho kunye nophuhliso oluthile.
Ke ngoko, kweli candelo, imithetho yoyilo jikelele yokubumba i-vacuum suction molding iyashwankathelwa.Uyilo lwe-vacuum yokubumba iplastiki yokubumba iquka ubungakanani bebhetshi, izixhobo zokubumba, iimeko ezichanekileyo, uyilo lwemilo yejometri, ukuzinza komda kunye nomgangatho womphezulu.
1. Kwiimvavanyo zesayizi yebhetshi, imveliso yokubumba incinci, kwaye inokwenziwa ngamaplanga okanye i-resin.Nangona kunjalo, ukuba ukungunda kovavanyo kukufumana idatha malunga nokuncipha, ukuzinza komda, kunye nexesha lomjikelo wemveliso, isikhunta esisodwa somgodi kufuneka sisetyenziselwe uvavanyo, kwaye inokuqinisekiswa ukuba isetyenziswe phantsi kweemeko zemveliso.Iimbumba zenziwa ngegypsum, ubhedu, i-aluminiyam, okanye ialloys ze-aluminium-steel, kwaye i-aluminiyam-resin ayifane isetyenziswe.
2. Uyilo lwemilo yejometri.Xa uyila, soloko uqwalasela ukuzinza kwe-dimensional kunye nomgangatho ophezulu.Umzekelo, uyilo lwemveliso kunye nokuzinza kwe-dimensional kufuna ukusetyenziswa kwe-molds yabasetyhini (i-concave molds), kodwa iimveliso ezinomgangatho ophezulu we-gloss zifuna ukusetyenziswa kwe-molds yamadoda (i-convex molds).Ngale ndlela, umthengi weplastiki uya kuqwalasela zombini iNqaku ukuze imveliso ibe nokuveliswa phantsi kweemeko ezifanelekileyo.Amava abonisile ukuba uyilo olungahlangabezani neemeko zokwenyani zokusetyenzwa rhoqo lusilela.
3. Uzinzo lweDimensional.Ngethuba lenkqubo yokubumba, indawo yokudibanisa inxalenye yeplastiki kunye ne-mold ingcono kune-dimensional stability yenxalenye eshiya isikhunta.Ukuba ubukhulu bezinto eziphathekayo bufuneka ukuba butshintshwe kwixesha elizayo ngenxa yokuqina kwezinto eziphathekayo, i-mold yendoda inokuguqulwa ibe yimbumba yabasetyhini.Ukunyamezela kwe-dimensional yamalungu eplastiki kufuneka kungabi ngaphantsi kwe-10% yokuncipha.
4. Umphezulu wecandelo leplastiki, ngokubhekiselele kwizinto zokubumba ezinokugubungela, isakhiwo sobuso obubonakalayo becala leplastiki kufuneka senziwe ngokudibanisa ne-mold.Ukuba kunokwenzeka, musa ukuchukumisa ubuso obugudileyo benxalenye yeplastiki kunye ne-mold surface.Kufana nemeko yokwenza iibhafu kunye neebhafu zokuhlambela ezinemibundo engalunganga.
5. Ukuguqulwa.Ukuba ungqameko olubambekayo lwenxalenye yeplastiki isarhiwe ngesarha ethe tyaba ngoomatshini, kufuneka kubekho ubuncinci be-6 ukuya kwi-8 mm kwicala lokuphakama.Omnye umsebenzi wokunxiba, onje ngokusila, ukusika ngelaser, okanye ukujetha, nawo kufuneka uvumele umda.Umsantsa phakathi komgca wokusika we-cutting edge die yincinci, kwaye ububanzi bokusabalalisa i-punching die xa i-trimming nayo incinci.Ezi kufuneka zinikwe ingqwalasela.
6. Ukuncipha kunye nokuguqulwa.Iiplastiki kulula ukunciphisa (ezifana ne-PE).Amanye amalungu eplastiki kulula ukonakala.Kungakhathaliseki ukuba zithintelwa njani na, iindawo zeplastiki ziya konakala ngexesha lokupholisa.Ngaphantsi kwalo mqathango, kuyimfuneko ukutshintsha imilo yokubumba ukubumba ukulungelelanisa ukuphambuka kwejometri yenxalenye yeplastiki.Umzekelo: Nangona udonga lwenxalenye yeplastiki lugcinwe luthe tye, isikhungo salo sokubhekisela siye saphambuka nge-10mm;isiseko sokubumba sinokunyuswa ukulungisa ukucutheka kolu tshintsho.
7. I-Srinkage, le miba ilandelayo yokunciphisa kufuneka ithathelwe ingqalelo xa kusenziwa i-plastiki yokwenza i-mold.
①Imveliso ebunjiweyo iyancipha.Ukuba i-shrinkage yeplastiki ayinakukwazi ngokucacileyo, kufuneka isampuli okanye ifunyenwe ngokuvavanywa ngokubumba okufanayo.Qaphela: Ukucutheka kuphela kunokufunyanwa ngale ndlela, kwaye ubungakanani be-deformation abunakufunyanwa.
②I-Shrinkage ebangelwa yimiphumo emibi yemidiya ephakathi, njenge-ceramics, i-rubber ye-silicone, njl.
③Ukucutheka kwezinto ezisetyenziselwa ukubumba, ezifana nokushwabana xa kusenziwa i-aluminium.
Ixesha lokuposa: Aug-18-2021