01 Izimiso zemishini
Indlela eyisisekelo ye-extrusion ilula—isikulufu sijika kusilinda bese siphushela ipulasitiki phambili.Isikulufu empeleni siyi-bevel noma irempu eboshwe endaweni emaphakathi.Inhloso ukukhulisa ingcindezi ukuze unqobe ukumelana okukhulu.Endabeni ye-extruder, kunezinhlobo ezingu-3 zokumelana okufanele zinqotshwe: ukungqubuzana kwezinhlayiya eziqinile (okuphakelayo) odongeni lwesilinda kanye nokungqubuzana phakathi kwazo lapho isikulufu siphenduka amajika ambalwa (indawo yokuphakelayo);ukunamathela kokuncibilika odongeni lwesilinda;Ukumelana nokuncibilika kwezinto zayo zangaphakathi lapho iphushelwa phambili.
Izikulufu eziningi ezingasodwa ziyizintambo ezingakwesokudla, njengalezo ezisetshenziswa ekwenzeni ukhuni nasemishinini.Uma zibhekwa ngemuva, zijikela kolunye uhlangothi ngoba zenza konke okusemandleni ukuzungeza umgqomo emuva.Kwamanye ama-extruder angamawele ngezikulufu, izikulufu ezimbili zizungeza ngokuphambene kumasilinda amabili futhi ziphambane, ngakho-ke esinye kufanele sibheke kwesokudla futhi esinye sibheke kwesokunxele.Kwezinye izikulufu ezingamawele eziluma, izikulufu ezimbili zizungeza ziye ohlangothini olufanayo futhi kufanele zibe nomumo ofanayo.Nokho, kunoma yikuphi, kunama-thrust bearings abamba amandla okubuyela emuva, futhi isimiso sikaNewton sisasebenza.
02 Isimiso sokushisa
Amapulasitiki anwebekayo angama-thermoplastic-ancibilika lapho eshiselwa futhi aqina futhi lapho epholile.Kuvelaphi ukushisa okuvela kupulasitiki oncibilikayo?Ukushisisa okuphakelayo nama-cylinder/die heater kungase kusebenze futhi kubalulekile ekuqaleni, kodwa amandla okufaka enjini—ukushisa okushayisanayo okukhiqizwa kusilinda lapho injini iphendula isikulufu ngokumelene nokumelana nokuncibilika kwe-viscous—kuwumthombo wokushisa obaluleke kakhulu. kuwo wonke amapulasitiki, ngaphandle kwamasistimu amancane, izikulufu ezinesivinini esiphansi, amapulasitiki ancibilika kakhulu ancibilika, nezinhlelo zokusebenza zokumboza i-extrusion.
Kuyo yonke eminye imisebenzi, kubalulekile ukuqaphela ukuthi isifudumezi sekhatriji akuwona umthombo wokushisa oyinhloko osebenzayo futhi ngenxa yalokho sinomthelela omncane ekukhipheni kunalokho ebesingakulindela.Izinga lokushisa elingemuva le-cylinder lingase libe libalulekile ngoba lithinta izinga lokuthutha okuqinile ku-meshing noma okuphakelayo.Amazinga okushisa okufa nesikhunta ngokuvamile kufanele kube izinga lokushisa elifiswayo lokuncibilika noma asondele kulo, ngaphandle uma esetshenziselwa injongo ethile njengokuvanisha, ukusabalalisa uketshezi, noma ukulawula ukucindezela.
03 Umgomo wokwehlisa izinga
Kuma-extruder amaningi, ukuguqulwa kwejubane lesikulufa kufinyelelwa ngokulungisa isivinini semoto.Injini ivamise ukujika ngesivinini esigcwele esingaba ngu-1750rpm, kodwa lokho kuyashesha kakhulu ngesikulufu esisodwa se-extruder.Uma ijikeleziswa ngesivinini esinjalo, kukhiqizwa ukushisa okukhulu kakhulu, futhi isikhathi sokuhlala sepulasitiki sifushane kakhulu ukuze kulungiselelwe ukuncibilika okufanayo, okushukunyiswe kahle.Izilinganiso ezijwayelekile zokuncishiswa ziphakathi kuka-10:1 no-20:1.Isigaba sokuqala singaba igiye noma i-pulley, kodwa isigaba sesibili sihloselwe futhi isikulufu sibekwe phakathi nendawo yegiya elikhulu lokugcina.
Kweminye imishini ehamba kancane (njengezikulufu ezingamawele ze-UPVC), kungase kube nezigaba ezi-3 zokwehlisa isivinini futhi isivinini esikhulu singase sibe phansi njengo-30 rpm noma ngaphansi (isilinganiso sifika ku-60:1).Ngakolunye uhlangothi, ezinye izikulufu ezingamawele ezinde kakhulu zokushukumisa zingasebenza ngo-600rpm noma ngokushesha, ngakho-ke izinga lokunciphisa eliphansi kakhulu liyadingeka kanye nokupholisa okuningi okujulile.
Ngezinye izikhathi izinga lokunciphisa alifani nomsebenzi-amandla amaningi kakhulu ashiywe engasetshenziswanga-futhi kungenzeka ukwengeza isethi ye-pulley phakathi kwemoto kanye nesiteji sokuqala sokunciphisa esishintsha isivinini esiphezulu.Lokhu kungahle kukhuphule isivinini sesikulufu sibe ngaphezu komkhawulo wangaphambilini noma kunciphisa isivinini esikhulu, okuvumela isistimu ukuthi isebenze ngephesenti elikhulu lesivinini esikhulu.Lokhu kwandisa amandla atholakalayo, kunciphisa i-amperage futhi kugweme izinkinga zemoto.Kuzo zombili izimo, okukhiphayo kungase kukhuphuke ngokuya ngezinto kanye nezidingo zakho zokupholisa.
Cindezela othintana naye:
Qing Hu
I-Langbo Machinery Co., Ltd
No.99 Lefeng Road
215624 Leyu Town Zhangjiagang Jiangsu
Ucingo: +86 58578311
EMail: info@langbochina.com
Iwebhusayithi: www.langbochina.com
Isikhathi sokuthumela: Jan-17-2023