Likarolo tsa mantlha tsaNanhai YaMochini oa Plastic Extruder ke "ho tsoela pele ho tsamaisa, ho etsa polasetiki e sebetsang hantle haholo, le ho bopa ho tsitsitseng."
Extruder e na le lits'ebetso tse hlano tsa mantlha ho tloha ho fepa ho isa ho ho bopa, e 'ngoe le e' ngoe e na le ts'ebetso e hlakileng le e sebetsang ka kopanelo:
1. Mokhoa oa ho fepa
Likaroloana tsa mantlha: hopper, feeder (e arotsoe ka matla a khoheli le ho fepa ka likhoka).
Mosebetsi: Ka mokhoa o tsitsitseng o fetisetsa li-granules/powder tsa polasetiki tse tiileng karolong ea phepelo ea screw, ho qoba "borokho" (ho koaloa ha thepa ka har'a hopper). Li-feeders tse qobelloang (tse kang li-twin-screw feeders) li loketse li-viscosity tse phahameng kapa lisebelisoa tse kopantsoeng habonolo, tse nang le phepo e nepahetseng ea ±1%.
2. Plasticizing System
Likarolo tsa mantlha: screw, barrel, futhumatsang le lisebelisoa tsa ho futhumatsa.
Mosebetsi: Sebaka sa mantlha sa "phetoho e tiileng ea metsi" ea polasetiki. Ho potoloha ha screw ho hlahisa matla a ho kuta, ao, a kopantsoeng le ho futhumala ka likarolo tsa barrel (hangata likarolo tse 3-5), butle-butle e nolofatsa le ho qhibilihisa polasetiki e tiileng; sesebelisoa sa ho pholisa (joaloka ho pholisa metsi kapa moea o pholileng) se laola mocheso oa moqomo ho thibela ho chesa le ho senyeha ha thepa.
Lintlha tsa bohlokoa: Karolelano ea bolelele ba screw-to-diameter (L/D) hangata ke 20:1-30:1. Mocheso oa mocheso oa moqomo o fetoloa ho ea ka thepa ea polasetiki (mohlala, PE 180-220 ℃, PVC 160-190 ℃).
3. Tsamaiso ea phetiso
Likarolo tsa mantlha: Motor, gearbox, coupling.
Mosebetsi: E fana ka matla a tsitsitseng ho screw le ho laola lebelo la screw (hangata 10-100 r / min). Hangata motlakase o sebelisa mochine o fapaneng oa maqhubu kapa mochine oa servo, o lumellang hore ho be le phetoho e nepahetseng ea lebelo; lebokose la gear le fokotsa lebelo la enjene mme le eketsa torque ho fihlela litlhoko tsa ts'ebetso e boima haholo ea screw.
4. Die Head le Mold System
Likarolo tsa mantlha: Hlooho ea lefu (e kopanya moqomo le hlobo), hlobo (e khethollang sebopeho sa sehlahisoa sa sehlahisoa).
Mosebetsi: E kenya polasetiki e qhibilihisitsoeng ka har'a mokoti oa hlobo ebe e e ntša ka libopeho tse khethehileng (mohlala, liphaephe, maqephe, liprofaele). Hlobo e hloka ho etsoa ka nepo ho latela boholo ba sehlahisoa. Mefuta e tloaelehileng e kenyelletsa hlobo ea liphaephe, hlobo ea molomo o bataletseng (maqephe/lifilimi), le liforomo tse nang le sebopeho se sa tloaelehang (li-profiles tsa mamati le lifensetere).
5. Mokhoa oa ho bōpa, ho pholisa, le oa ho hula
Lintho tse ka sehloohong: Sleeve sa ho bōpa (mohlala, sekontiri sa vacuum sizeng, calendering roller), tanka e pholileng (e pholileng ka metsi / moea), mochine oa ho hula.
Mosebetsi: Ka potlako e pholisa le ho bopa profil ea extruded e phahameng ea mocheso, ha ka nako e ts'oanang e e hula ka lebelo le ts'oanang ka mochini oa ho hula ho netefatsa botsitso ba sehlahisoa (mohlala, ho kheloha ha botenya ba pipe ≤ ± 0.1mm). Lebelo la ho hula le tlameha ho ts'oana le lebelo la extrusion ho thibela sehlahisoa ho otlolla kapa ho sosobana.
Ho itšetlehile ka litlhoko tsa tlhahiso, re ka fana kali-extruders tsa sekerufu se le seng, li-extruders tsa mafahla, le mela ea tlhahiso ea extrusion.
