Makina omangira jakisoni wa pulasitiki ndi makina omwe amatenthetsa ndikusakaniza mapulasitiki apulasitiki mpaka atasungunuka kukhala madzi, omwe amatumizidwa kupyolera mu phula ndikukanikizidwa kudzera munjira kuti apange zisankho kuti zilimbane ngati zigawo zapulasitiki.
Pali mitundu inayi yoyambira yamakina omangira, opangidwa mozungulira mphamvu yomwe imagwiritsidwa ntchito kubaya pulasitiki: hydraulic, magetsi, hybrid hydraulic-electric, and mechanical injection molders.Makina opangira ma hydraulic, omwe amagwiritsa ntchito ma mota amagetsi kuti apange mapampu amagetsi, anali mtundu woyamba wa makina opangira jakisoni wapulasitiki.Makina ambiri opangira jakisoni akadali amtunduwu.Komabe, makina amagetsi, osakanizidwa, ndi amakina amakhala olondola kwambiri.Zopangira ma jakisoni amagetsi, pogwiritsa ntchito ma servo motors oyendetsedwa ndi magetsi, zimawononga mphamvu zochepa, komanso kukhala chete komanso mwachangu.Komabe, iwonso ndi okwera mtengo kuposa makina a hydraulic.Makina osakanizidwa amagwiritsa ntchito mphamvu yofanana ndi yamagetsi, kudalira ma drive amphamvu a AC omwe amaphatikiza ma hydraulic ndi ma mota amagetsi.Pomaliza, makina amakina amachulukitsa matani pa clamp kudzera pa toggle system kuwonetsetsa kuti kung'anima sikulowa m'zigawo zolimba.Makina onsewa ndi amagetsi ndiabwino kwambiri pantchito zaukhondo m'chipinda chifukwa palibe chowopsa cha kutayikira kwa hydraulic system.
Iliyonse mwa mitundu iyi yamakina imagwira ntchito bwino pazinthu zosiyanasiyana, komabe.Makina amagetsi ndi abwino kwambiri kulondola, pomwe makina osakanizidwa amapereka mphamvu yochulukirapo.Makina a Hydraulic amagwiranso ntchito bwino kuposa mitundu ina yopanga zigawo zazikulu.
Kuphatikiza pa mitundu iyi, makina amabwera mumitundu yosiyanasiyana kuchokera ku matani 5-4,000, omwe amagwiritsidwa ntchito kutengera kukhuthala kwa pulasitiki ndi magawo omwe adzapangidwe.Makina omwe amagwiritsidwa ntchito kwambiri, komabe, ndi makina okwana matani 110 kapena matani 250.Pafupifupi, makina akuluakulu omangira jakisoni amatha kutengera $50,000-$200,000 kapena kupitilira apo.Makina okwana matani 3,000 amatha kugula $700,000.Kumbali ina ya sikelo, makina opangira jakisoni apakompyuta okhala ndi matani 5 amphamvu amatha kukhala pakati pa $30,000-50,000.
Nthawi zambiri malo ogulitsa makina amangogwiritsa ntchito mtundu umodzi wa makina omangira jekeseni, popeza mbali zake zimangotengera mtundu uliwonse- zimawononga ndalama zambiri kusintha kuchokera ku mtundu wina kupita ku wina (kupatulapo izi ndi zigawo za nkhungu, zomwe zimagwirizana ndi mitundu yosiyanasiyana. makina amtundu amatha kugwira ntchito zina bwino kuposa ena.
Zoyambira zamakina apulasitiki opangira jakisoni
Zoyambira zamakina omangira jakisoni wa Pulasitiki zimakhala ndi magawo atatu akulu: jekeseni, nkhungu, ndi gawo la clamping/ejector.Tidzayang'ana pa zida za jekeseni wa nkhungu m'zigawo zotsatirazi, zomwe zimagwera mu sprue ndi runner system, zipata, magawo awiri a nkhungu, ndi zochita za mbali zomwe mungasankhe.Mutha kudziwa zambiri za momwe mungapangire zoyambira jakisoni wa pulasitiki kudzera m'nkhani yathu yakuya ya Plastic Injection Molding Basics.
1. Mphuno ya Nkhungu
Mphuno ya nkhungu imakhala ndi mbali ziwiri: mbali A ndi B mbali.Pakatikati (B Side) nthawi zambiri imakhala yopanda zodzikongoletsera, mbali yamkati yomwe imakhala ndi zikhomo zotulutsa zomwe zimakankhira gawo lomwe lamalizidwa kunja kwa nkhungu.Pakhomo (A Side) ndi theka la nkhungu yomwe pulasitiki yosungunuka imadzaza.Mphuno za nkhungu nthawi zambiri zimakhala ndi polowera kuti mpweya utuluke, zomwe zikadatenthedwa komanso kuyambitsa mabala a pulasitiki.
2. Wothamanga System
Dongosolo lothamanga ndi njira yomwe imalumikiza zinthu zapulasitiki zosungunuka kuchokera ku wononga chakudya kupita ku gawo lamkati.Mu nkhungu yothamanga yozizira, pulasitiki idzaumitsa mkati mwa njira zothamanga komanso m'mabowo.Ziwalo zikatulutsidwa, othamangawo amatulutsidwanso.Othamanga amatha kumetedwa pogwiritsa ntchito njira zamanja monga kudula ndi zida zodula.Makina ena othamanga ozizira amangotulutsa othamangawo ndikugawana padera pogwiritsa ntchito nkhungu ya mbale zitatu, pomwe wothamanga amagawidwa ndi mbale yowonjezera pakati pa jekeseni ndi chipata cha gawo.
Zowotcha zothamanga sizimapanga zothamanga chifukwa chakudya chimasungidwa mumkhalidwe wosungunuka mpaka pachipata cha gawo.Nthawi zina amatchedwa "madontho otentha," makina othamanga otentha amachepetsa zinyalala ndikuwonjezera kuwongolera kuwongolera pakugwiritsa ntchito zida zowonjezera.
3. Mitengo
Sprues ndi njira yomwe pulasitiki yosungunuka imalowera kuchokera pamphuno, ndipo nthawi zambiri imadutsana ndi wothamanga wopita kuchipata chomwe pulasitiki imalowa m'mabowo a nkhungu.Mphukirayo ndi njira yayikulu yokulirapo kuposa njira yothamanga yomwe imalola kuchuluka koyenera kwa zinthu kuyenderera kuchokera mu jekeseni.Chithunzi 2 pansipa chikuwonetsa komwe sprue wa gawo la nkhungu linali pomwe pulasitiki yowonjezera idakhazikika pamenepo.
A sprue molunjika pachipata cha m'mphepete mwa gawo.Mawonekedwe a perpendicular amatchedwa "cold slugs" ndikuthandizira kumeta ubweya wa zinthu kulowa pachipata.
4. Zipata
Chipata ndi kabowo kakang'ono mu chida chomwe chimalola pulasitiki yosungunuka kulowa mu nkhungu.Malo a zipata nthawi zambiri amawonekera pagawo lowumbidwa ndipo amawoneka ngati kachigamba kakang'ono kakang'ono kapena mawonekedwe owoneka ngati dimple omwe amadziwika kuti chipata.Pali mitundu yosiyanasiyana ya zipata, iliyonse ili ndi mphamvu zake ndi malonda ake.
5. Mzere Wolekanitsa
Mzere waukulu wolekanitsa wa jekeseni wowumbidwa ndi jekeseni umapangidwa pamene hafu ya nkhungu imayandikirana jekeseni.Ndi mzere wopyapyala wa pulasitiki womwe umayenda mozungulira kunja kwa gawolo.
6. Zochita Zam'mbali
Zochita zam'mbali ndizoyikapo zomwe zimawonjezeredwa ku nkhungu zomwe zimalola kuti zinthu ziziyenda mozungulira kuti zipange mawonekedwe a undercut.Zochita zam'mbali ziyeneranso kulola kutulutsa bwino kwa gawolo, kuteteza loko yotsekera, kapena momwe gawo kapena chida chikuyenera kuwonongeka kuti chichotsedwe.Chifukwa zochita zam'mbali sizimatsata zida zonse, mawonekedwe ochepera amafunikira ma angles okhudzana ndi kayendetsedwe kazochita.Werengani zambiri za mitundu yodziwika bwino ya zochitika zam'mbali ndi chifukwa chake zimagwiritsidwa ntchito.
Pazifukwa zosavuta za A ndi B zomwe zilibe geometry yocheperako, chida chimatha kutseka, kupanga, ndikutulutsa gawo popanda njira zowonjezera.Komabe, mbali zambiri zimakhala ndi mapangidwe omwe amafunikira mbali kuti apange zinthu monga kutseguka, ulusi, ma tabo, kapena zina.Zochita zam'mbali zimapanga mizere yolekanitsa yachiwiri.
Nthawi yotumiza: Mar-20-2023