Izinsiza zokufaka ipulasitiki emakhiweni ensimbi. Izinsimbi zokufakelwa kwe-plastic injection

Ukubumba ama-plastiki ngaphansi kwengcindezi kuyindlela ephumelela kunazo zonke yokuthola imikhiqizo ehlukene. Izinsiza zokukhishwa kwepulasitiki - amadivaysi amaningi ahlukahlukene avumela ukuthi uguqule ipulasitiki bese uyinika isimo esithile.

Izici zokukhipha njengenqubo yamakhemikhali

Uma ukuphonsa, ipulasitiki ngaphansi kwengcindezi ishintsha ukugeleza kwayo kwe-viscous ngokuvumelana nokugeleza ngokusebenzisa iziteshi zemishini. Ifomu elithile lilungiselelwe kusengaphambili, lapho inqwaba encibilikisiwe ingena, lapho iba khona khona. Njengemishini yokukhishwa kwepulasitiki, indaba ngokwayo ingahluka - ukhetho luxhomeke kwimodi lapho ukukhishwa kwenzeka khona nokuthi yiyiphi indlela.

Ukusakaza ama-plastiki kwenzeka kaningi ngokucindezela kwama-80-140 MPa. Uma kuphakeme, kunethuba lokuthola imikhiqizo eyobonakala ngamandla amakhulu. Ngaphezu kwalokho, ingcindezi ye-ultra-high ikuvumela ukuba udlulise ngokunembile ubukhulu bezingxenye zomkhiqizo. Izinga lokucindezelwa likhethwa kuye ngokuthi izinga le-viscosity, ukuqubuka kwepulasitiki, uhlobo lwesikhunta kanye nomphumela okumele uzuzwe.

Izinhlobo zokukhipha

Imishini yokufakelwa umjovo we-plastiki ikhethwe kuye ngokuthi yikuphi uhlobo lokukhipha oluzobanjwa njengesisekelo. Kuneziningana zazo:

1. Injection. Ngesizo salo, imikhiqizo itholakala ngezindonga ezincane noma ezincane kakhulu, zinikela kancane kancane. Inqubo ngokwayo ingumjovo wepulasitiki elicwengile ibe yisikhumba esingasondeli ngokuphelele.
2. Ukungena. Le ndlela iyadingeka ukuze uthole imikhiqizo enezindonga ezinzima. Enhliziyweni yomsebenzi wakhe umjovo ube yisikhwama sempahla encane kunalokho okudingekayo. Isibunjwa sigcwele ukwakhiwa kwamanzi aphansi ngaphansi kwengcindezi ephansi. Uma nje igcwele, inani elincane lempahla lihanjiswa ngaphansi kwengcindezi ephakeme - ekugcineni lidala umkhiqizo futhi libuyisela ukukhishwa kwalo.

Imishini yokwenza injini - imishini eyisisekelo

Imishini yokukhishwa kwama-plastiki isetshenziswa ngendlela ehlukile, kodwa, njengombuso, imikhiqizo yayo isisekelo. Izinzuzo zokukhipha ukucindezelwa okuphezulu yizi:

1. Kungenzeka ukusebenzisa izinhlobo ezahlukene zepulasitiki.
2. Ukusebenza kwemishini, enikeza inqubo ezenzakalelayo.
3. Kungenzeka ukukhiqiza imininingwane ye-geometry eyinkimbinkimbi, engenakwenziwa ngamanye ubuchwepheshe.
4. Imikhiqizo eyenziwe ngendlela yokukhipha ingaqiniswa, ibe yi-hybride noma engavundi, i-multicolored kanye ne-plastiki eyandisiwe.
5. Ikhono lokwakha imikhiqizo yezinsimbi ezahlukene - kusuka kwamagremu amaningana kuya ku-kilogram eziningana.

Izici zobuchwepheshe

Ukusebenzisa imishini yokwenza imikhiqizo yepulasitiki, ungakha imikhiqizo ehlukene. Kulokhu, indlela ngokwayo iyindlela ehamba ngayo, futhi isisekelo sayo singanciphisa lokhu okulandelayo:

1. Okokuqala, i-polymer iyancibilika, ehlanganisa isilinda somshini wokufakelwa umjovo ukuze uqhubeke ukondla.
2. Ukuqhaqhazela kudluliselwa esikhunjini, esihlanganiswa ngokugcwele nge-polymer compound.
3. Ukuqhaqhazela kuqina, kanti isilinda sezinto ezibonakalayo sisalokhu sivaliwe nesimiso sokubunjwa.
4. Ngemuva kokuba umkhiqizo unzima, isikhunta sivula, umkhiqizo ususwe kuwo.

Imishini yokwakheka kwepulasitiki inezici ezilandelayo:

• Vimba, okuyinto ekulungiselela uketshezi futhi uyondla kwisikhungu (injection unit);
• Ukuvimbela ukuvala (nokuvulwa) kwesikhunta, okuyinto idivayisi yokunyathelisa ene-slider (i-clamping unit);
• Iyunithi yeDrayivu: inikeza zonke izinhlobo zokuhamba kwemishini yeselula nezesekeli;
• Lawula umshini wokufakelwa komshini wedivayisi: yakhelwe ukuhlinzeka ngemingcele ebalulekile yomsebenzi, ukuze ukukhishwa kwenziwe ngekhwalithi.

I-thermoplastic automata yinkimbinkimbi yezinto eziyinkimbinkimbi futhi ezibiza kakhulu, lapho izixazululo zobuchwepheshe zanamuhla zikhona.

Izinhlobo zemishini

I-TPA iyimishini yesimanje yokwakhiwa kwama-plastiki, okwenziwe ngokuguqulwa okuhlukahlukene. Kuye ngendlela ye-plasticization, yi-single-or two-screw, i-piston noma i-screw-piston. I-plasticization ngokwayo ingahlanganiswa noma ihlukaniswe. Inombolo yamaplasticizer ihlukile. Ukushayela kwe-TPA kungaba yombane noma i-hydromechanical. Ngaphezu kwalokho, yonke imishini yokugaya injini iyindilinga, iqondile, i-angular - neyingxenye yokucindezela enezingqimba noma eziqondile.

Imishini yesikhumba yokufakelwa umjovo we-plastiki ivumela ukudala imikhiqizo emikhulu enzima ukuyisusa esikhunjini, futhi i-TPA eqondile, ngokuphambene nalokho, inhle ekukhiqizeni imikhiqizo emincane, kuhlanganise nokuqiniswa.

Umshini wokugaya umjovo usebenza kanjani?

Isimiso sokusebenza semishini yokugaya umjovo ilula. Izinto ezibonakalayo, okumele zicutshungulwe, zifakwe ebhodini leyunithi ye-plasticization, bese isuswe ngaphakathi kwe-cylinder, lapho amandla okuqhaqhazana enza khona ngaphansi kwethonya lesi-screw . Ngenxa yalokho, izinto ezibandayo zishisa, zenziwe nge-plasticized, bese zondliwa ngobuningi obukhulu phakathi kwesikhala. Njengoba inani elidingekayo lokuqhaqhazela liqoqa, le nto ijojowe isikhunta. Umkhiqizo ophelile uthathwe kuwo, futhi umjikelezo uqala futhi.

Izinsiza zokubumba ipulasitiki emasimini e-silicone zisetshenziselwa izindlela eziningana:

1. Ibhukwana, uma imisebenzi iqalwa ngokucindezela inkinobho bese ubeka izikhundla zokugcina zokuhambisa izinombolo zeselula.
2. I-semi-othomathikhi. Kulo modi, umnyango wokuphepha weselula uvula futhi uvale ukwenza umjikelezo owodwa wokusebenza.
3. I-Automatic (photocell). Kulesi simo, imijikelezo ilandelana, kodwa umyalo womjikelezo olandelayo usakazwa yizithombe zezimoto ngesikhathi umkhiqizo ophelile uwela phakathi kwawo.
4. Ngokuzenzakalelayo (isikhathi) lapho umjikelezo usemodi othomathikhi, futhi umjikelezo olandelayo uqala ngemuva kokulibaziseka kwesikhathi phakathi kwabo kuphelelwa yisikhathi.

Izinhlelo zokuvikelwa

Noma yimaphi amadivaysi, kufaka phakathi imishini yokukhishwa kwama-plastiki ekhaya, kufanele asebenze ngesisekelo semithetho yokuphepha. I-TPA yanamuhla ihlale ifakwe izinhlelo eziqinisekisa ukuphepha kwabasebenzi, ukusebenza ezimweni eziphuthumayo. Wonke amadivaysi okuvivinya ama-electronic, mechanical, ukuphepha, futhi futhi njengesembozo sokuzivikela sezinto zokushisa.

Ngamadivaysi e-elektroniki kungenzeka ukuvikela indlela ye-hydraulic system. Ezimweni eziphuthumayo, ungasebenzisa inkinobho "yokuma ophuthumayo" ukuze unqamule umshini wokupompa i-opharetha. Izinqubo zamashini zivala nje isikhunta. Ngendwangu yokuvikela yezinto zokushisa, ukuphepha kwemishini kuqinisekisiwe.

Ama-Main

Abakhiqizi banamuhla banikeza ukukhethwa okukhulu kwemishini yokwenza umjovo, futhi intengo yemishini yokukhishwa kwepulasitiki ihluke kakhulu futhi incike emigqeni yobuchwepheshe, amandla kanye nezinye izinkomba. Okuthandwa kakhulu namuhla kunama brand Japanese, Chinese kanye South Korea. Ngakho-ke, uchungechunge olusha lwe-TPA lwakhululwa yinkampani yaseJapane uNissei. Izici zalezi mikhiqizo zimi kanje:

1. Ukuba khona kwe-5-zone control lokushisa lokushisa, kufaka phakathi ukushisa kwe-port yokulayisha.
2. I-TPA ingasebenza kuphela kunethiwekhi.

Isixazululo esithakazelisayo sinikezwa inkampani yaseSumitomo: ekuxhumaneni kwayo kunamamodeli angu-4, ahamba ngokuqondile aerger on bear bearings. Imodeli inembile kakhulu. Intengo esakhiwe yi-brand Toshiba ethandwayo yokujola epulasitiki iphakeme, kodwa iqondisa izinga elihle lezinhlelo. Izici ezihlukile zemikhiqizo yalo mkhiqizo yizi:

• Uhlelo olusha lokulawula olulawula ama-robot ngokuqondile;
• Amaphakheji we-Software angalandwa phezu kwe-intanethi;
• Idivayisi ingahle ilungiselelwe imingcele yomsindo.

UNadem waseMeiki

Isibonelo se-Nadem esivela kuMeiki sinokulawula okuqondile, sihambisana nesistimu yokucindezela umjovo. Le divayisi igesi ngokugcwele, isebenza ngesivinini esiphezulu. I-JSW Plastics Machinery brand inikeza i-unit efanayo ephelele: i-TPA ephakeme ijubane yenza kube lula ukwenza imikhiqizo eminingi yobukhulu obuhlukahlukene. Ngaphansi komkhiqizo weToyo, imishini enkulu yokufakelwa injini isakhiwe. Intengo yemishini enjalo ingafinyelela ku-ruble million, kuyilapho umshini unqabile ukudlidliza, unomshini okhethekile wokujola, ohlotshaniswa nokulinganisa kwamakholomu.

Ngokwemishini yemishini yokwenza injini yeJONWAI, izingxenye ezihlukahlukene zezimoto zenziwa. Ekuqaleni, inkampani igxile ekutheni basebenzise izinto eziphinda zenziwe nge-polymer. Futhi imikhiqizo yalo mkhiqizo isetshenziswe kakhulu ngabakhiqizi bemoto abathandwayo HYUNDAI, PEUGEOT, FORD, DACIA, FIAT. I-TPA isetshenziselwa kakhulu ukubunjwa kwe-bumpers yepulasitiki. Ukwakhiwa kwemishini yalezi zinqubo kungenye yezinto zikaJONWAI.

Ukubumbana ekubunjweni okuyi- silicone: yini okuyisisekelo?

Ukuhlanza i-form in elastic form kuhilela ukukhiqizwa kweplastiki, i-raber, imikhiqizo yeplastiki. Le ndlela isetshenziselwa izinhloso ezehlukene: uma udala ama-prototypes nama-prototypes, amaqoqo amancane wezimpahla zezinombolo ezihlukahlukene zinkimbinkimbi, isimo nesayizi. Amafomu adalwe ngesisekelo sokuthulukisa abiconsi engxenyeni yefomu, lapho i-model model ikhona khona. I-silicone i-polymerizes, ngemva kwalokho ibumbwe ibe isikhunta.

Imishini yokwenza ipulasitiki ibe yi-silicone isikhunta ikuvumela ukuba uthole imikhiqizo eveza ngokugcwele ubukhulu kanye nokubunjwa kwendawo ye-model model. Ukwengeza, ukuphonswa ku-vacuum kuvimbela ukubukeka kwe-porosity ebusweni nasezintheni kuso. Kubalulekile futhi ukuthi ukubunjwa kwe-silicone kuvumela ukudala imikhiqizo yanoma yiluphi uhlobo oluyinkimbinkimbi nokucushwa, okungenakufezwa ngokusetshenziswa kwamanye ubuchwepheshe.

Ukubunjwa kwe-Rotational yama-plastiki

Ukukhiqizwa kwemishini yokukhishwa kwemikhiqizo epulasitiki kuyinkimbinkimbi, okuvumela ukuthola imikhiqizo yobukhulu obukhulu. Ukuziqhenya kokukhiqizwa kwabo ukuthi akukho ama-seams kulo mkhiqizo, futhi izindonga zawo zilingana nobukhulu. I-Rotoforming ihilela ukungabi khona kwengcindezi kulokhu okubonakalayo, ngakho imikhiqizo eqediwe ayinayo ukucindezeleka kwangaphakathi, okuthinta amandla amakhulu. Lolu hlobo lokubumba luhlanganisa izigaba ezintathu zomsebenzi:

1. Okokuqala, impahla ye-polymeric ithululelwa emkhunjini.
2. Ifomu lithunyelwa ekamelweni lapho lishiswe khona. Yilesi sigaba esikubunjwa ukujikeleza.
3. Esigabeni sokugcina, ifomu lokujikeleza licolile.