Ukubumbisa kwifomu ye-silicone: izixhobo. Ukucoca i-molding kwi-mold silicone

Ukuveliswa kwenani elincinci leebhola zeplastiki, ukubunjwa kwe-vacuum kwi-mold silicone isetyenziswa rhoqo. Le ndlela iyancitshiswa (ukwenza i-mold mold ifuna ixesha elininzi kunye nemali). Ukongeza, i-silicone molds isetyenziswa kaninzi, kwaye oku kunciphisa kakhulu indleko yemveliso.

Ukugxotha iiplastiki

Ingundoqo yendlela yokwenza iiplastiki zilandelayo zilandelayo. Izinto ezincibilikiweyo zikwinqanaba elibanzi (izixhobo ezizodwa zokubumba kwi-silicone molds). Ngaphantsi kwezenzo zepiston, ubunzima buhamba ngeendlela eziphambeneyo, kwaye zizalisa indawo yokubunjwa. Ngaloo ndlela, kunokwenzeka ukufumana ukuphosa. Xa iplastiki ishushu, i-athomu apho iqulunqwe khona iqala ukuhamba ngokulandelanayo kunye nokungahleli. Nangona kunjalo, ekupholiseni, amaziko e-crystallization aqala ukwenza. Iindonga zesikhunta zikhula ngama-crystals, ngoko le nkqubo iyenzeka ngaphakathi. Kule nqanaba kubaluleke kakhulu ukuthobela urhulumente wokushisa, ukukhetha ixesha elifanelekileyo lokuguga. Ngaphandle koko, ukubunjwa kweeplastiki kwi-mold silicone kuya kubakho, kunye nempawu ezibonakalayo zokulahlwa. Kodwa, okokuqala, kubalulekile ukwenza iifom ngokwayo, apho ubuninzi bekristalllization buza kuthululwa.

IThekhnoloji ekwenzeni izibumba zokukhangela

Kukho iindlela ezininzi zokudala i-silicone molds. Eyokuqala kwezi zizaliso eziqinileyo. Le ndlela ilungele ukuyila okulula: i-reliefs, iimveliso zokukhumbuza, iinxalenye ezimbini. Umzekelo ufakwa kwifomu, egcwele i-silicone. Iifom zefowuni zenziwe njengezidlulileyo, zisetyenziselwa ubunzima obunzima. Iifom ezimbini zeenxalenye ziveliswa kwizigaba eziliqela. Okokuqala, isahlulo sokuqala somsebenzi siyancitywa, emva kokuqina kowesilicone, umlo uphendululwa kwaye inxalenye yesibini iyafana. Kubaluleke kakhulu kule ndlela yokukhetha izitshixo ezikhethekileyo kwisiseko (ukufakwa kwifom ye-silicone yale hlobo kufuneka kuvele ngaphandle kokufuduka kwayo). Uninzi ngokuphindaphindiweyo zonke iifom zefom yefayili "kwi-namazku." I-silicone ehambelayo isetyenziswe kwinqanaba lebhayisiki. Inkqubo yenzeka kwiinqanaba eziliqela, oku kuyimfuneko ukuphindaphinda okupheleleyo kwazo zonke iinguqu ezincinane zomkhiqizo. Kule meko, le fomu ngokwayo iyincinci - ukusuka kwi-3 mm. Ukuyigcina ngokusemgangathweni, igobolondo elikhuni lithe lenziwa kwisigaba sokugqibela.

I-silicone ekwenzeni ukubunjwa

Ukucoca ulwakhiwo kwi-mold silicone kubandakanya ukusetyenziswa kwezixhobo ezahlukeneyo ukudala imitha. Enye yazo i-silicone efana ne-Mold Star. Isetyenziselwa ukuthululwa okuqhubekayo, ngokukhawuleza kwaye kuguquguqukayo. Ukuqiniswa kwenzeka kwiqondo lokushisa. Kuba ubuchule "kwi-namazku" buhlala kusetyenziswa uluhlu lweRubount. Le silicone ine-viscosity ephezulu, enokulawulwa ngongqongqo. Ukugxotha kwifom ye-silicone yolu hlobo kwenza kube lula ukufumana umgangatho ophezulu, umthamo oqinileyo, kwaye ngokufanelekileyo, inxalenye echanekileyo. Kukho i-silicones eguquguqukayo, efanelekileyo yokulolwa kwemilo.

Izinto zokupakisha

Njengolawulo, i-polyurethane isetyenziselwa ukuvelisa iinxalenye ngokwazo. Izinto eziphathekayo zinamandla okuba nefuthe, ubunzima, ukunyaniseka. I-polyurethane i-rubber inamandla amakhulu okuqina kunye namandla okuqhawula. Zisetyenziswe ekwakhiweni kwamateyipu ahlukeneyo, iisilinda, ifa, i-gaskets, i-bushings. Sekunjalo ukuphinda usetyenzise kwakhona iplastiki ebonakalayo. Akuxhatshali kwiimitha ze-ultraviolet kwaye igcinwa ngokucacileyo nakubonakalisa. Intsimi yesicelo iilensi zeemvavanyo ezahlukahlukeneyo, iimpawu zonyango, ukuveliswa kwezikhumbuzo, njl. Ngokuqhelekileyo, ukubunjwa kwifom ye-silicone kubandakanya ukusetyenziswa kweemveliso zecandelo ezimbini, ezibandakanya iplastiki ngokuthe ngqo kunye ne-catalyst.

Ukubunjwa kwiplastiki kwintsimbi ye-silicone. Izixhobo

Imveliso emancinci yeebhanti zokukhangela yinkqubo yezobuchwepheshe evumela ukuba ifumane iikopi zeefayili ezichanekileyo zenkcazelo yinkathazo. Ngokuqhelekileyo, le nkqubo isetyenziselwa ukufumana iimpawu zeprotypes ezivanywayo phambi kokuqalisa ukuveliswa kwemveliso, ukuvavanya ukubonakala, ukuyila.

Ukubunjwa kwombutho weplastiki kwisixhobo sokubumba i-silicone sinika oku okulandelayo: igumbi lokucoca (umshini wokubumba injini), i-thermo cabinet, i-mixer vacuum (mixer). I-silicone iqalelwa kuqala kwigumbi lokucoca, apho inkqubo yokuhlaziya iyenzeka khona. Oku kuyimfuneko ukukhusela ukubunjwa kwamabhule kwi-mold. Emva kokubunjwa kwesikhunta esenziwe kunye nokuqhathaniswa, i-polyurethanes (okanye i-resins yesahlulo sokugqibela) ixutywe ngqo. Le nqubo iqhutyelwa kwigumbi lokuphumula. Ngesango umxube uthululwa kwi-mold. Ukuqhutyelwa kokugqibela, umsebenzi omele usebenze kwi-oven ekhethekileyo, apho ukuqina kowokugqibela komkhiqizo kwenzeka kwiqondo lokushisa lika-70 ° C.

Igumbi lokuLawula. Iimpawu eziphambili

Njengomgaqo, kwinqanaba lemveliso, ukubunjwa ngokuzenzekelayo kwi-mold silicone kusetyenziswa. Izixhobo, oko kukuthi igumbi lokucoca, livumela ukulawula kokushushu kwamaqondo kunye nokukhawuleza. Umqhubi akafunanga izakhono ezikhethekileyo nolwazi, kuba zonke izilawuli zivela kwinkqubo yokusebenza ehambayo ngokuzenzekelayo kunye nobungqina. Kukho kwakhona ukulungiswa kwenkqubo ekhankanywe. Ukuguqulwa okuhlukeneyo kwamagumbi kunakho ukuvelisa izibini ukuya kwi-5 kg (umzekelo, ikhamera CT-02). Iyunithi ifakwe ukuphakanyiswa ukuphakamisa isikhombi se-silicone. Kufuneka kuqatshelwe ukuba inkqubo ye-CT-02 ivumela ukusetyenziswa kwamatrices amancinci kwaye athathaka.

Enye inketho ikhamera ye-MCP. Esi sixhobo sokubunjwa se-silicone senza ukuba sikwazi ukuvelisa iinxalenye ngeendonga ezincinci kunye nokucwangciswa okunzima. Le nqubo yenziwa ngenxa yokunyanzeliswa koxinzelelo. Emva koko i-castings ifunyenwe ikhutshwe, kwaye emva koko iyanceda emoyeni. Ukucoca ulwakhiwo kwi-molds ye-silicone yeentlobo zeeplastiki zigqitywa kwiikhabhinethi ze-thermo, eziqinisekisa ukufudumala komoya, kwaye, ngokufanayo, umsebenzi osebenzayo.

Ukugqitywa kokugqibela kweebhanti zokuphosa

Emva kokuba ubunzima beplastiki buye bukhuni, lukhutshwe ngokucokisekileyo kwi-mold. Kukho unyango lwe-mechanical of surface, isuswe kwaye luhlanjululwe ukukhutshwa, ukutyikitya. Ukuba kuyimfuneko, i-blank blank is covered with pein or other material. Kubalulekile ukucoca ifom ye-silicone, ukususa iimpahla zeplastiki. Emva koko ihlambulukile, ilungele ukusetyenziswa kamva. Kubalulekile ukuphawula ukuba ukubunjwa kweplastiki kwi-mold silicone kubonelela ukusetyenziswa ngokuphindaphindiweyo kweematrice (ukususela kuma-20 ukuya kuma-80 amaxesha).

Iinjongo eziphambili zendlela

Ukuveliswa kwemveliso emancinci kukhula, kuvumela ukuba ulinganise ngokwemilinganiselo yemarike yokuthengisa, ukuvavanya iimveliso, ukudala imisebenzi yombhali oyingqayizivele. Izibumba ze-silicone, ezisetyenziselwa ukubunjwa kwe-plastiki, yenza ukuba ukwazi ukukopisha ngokupheleleyo ukubunjwa, ukuma kunye nokwakhiwa komsebenzi. Inxalenye ikhutshwa lula kwi-matrix, engasetyenziswa ngokuphindaphindiweyo. Iipropati zinenani elincinci leempazamo zomhlaba, iipropati ezibonakalayo kunye nezixhobo. Ukongezelela, kwezinye iimeko, isinyithi sinokuthululelwa kwi-silicone molds.

Kodwa inzuzo eyona nto ebalulekileyo yokuba ukwakhiwa kwi-silicone molds yintengo. Ababoneleli bale nkonzo babonisa ukuba iindleko zokugqibela zomsebenzi ziya kuxhomekeka kwimpahla yeplastiki nakwiimimiselo zevolda yecandelo (umzekelo, i-10 * 10 * 10 cm ye-billet inokubiza i-ruble 1,500). I-silicone ngokwayo ingathengwa kuma-ruble ama-500 kilogram, iplastiki - ukusuka kuma-ruble angama-700. Iindleko zefom zensimbi ziphakamileyo kakhulu, ngamanye amaxesha ukusetyenziswa kwazo kuphelelanga nje (ukuba ukuhamba kweeyunithi eziliqela). Kwaye i-matrices ye-silicone ifanelekile nokusetyenziswa kwekhaya, akufuneki ukuthenga izixhobo ezibiza. Kufuneka kuphela ukwenza i-layout ngokwakho, ukuqwalasela ixesha lobomi be-polyurethanes (ixesha apho bahlala bekhompyutheni kwaye bafanelekile ukuthulula), ukugcina zonke izinto zobuchwepheshe - kunye nokubunjwa kwifomu ye-silicone kungenziwa nakwikhaya. Ngokwezibalo, iindleko zebillet enye kulo mzekelo zi malunga nama-ruble angama-70-140.