Iimpawu eziphambili zeNanhai YaUmatshini wePlastiki we-Extruder "uhambisa ngokuqhubekayo, ukufakwa kweplastiki ephezulu, kunye nokubumba okuzinzileyo."
I-extruder ineenkqubo ezingundoqo ezintlanu ukusuka ekutyeni ukuya ekubumbeni, nganye inomsebenzi ocacileyo kunye nokusebenza ngokubambisana:
1. Inkqubo yokutya
Amacandelo angundoqo: i-hopper, i-feeder (yahlulwe ngokutya kobunzima kunye nokunyanzeliswa kokutya).
Umsebenzi: Uhambisa ngokuzinzileyo iigranules/umgubo weplastiki owomeleleyo ukuya kwicandelo lefidi yesikrufu, ukuthintela "ukuvala ibhulorho" (ukuvalwa kwezinto kwi-hopper). Izondla ezinyanzelwayo (ezifana ne-twin-screw feeders) zifanelekile kwi-viscosity ephezulu okanye izinto eziguquguqukayo ngokulula, kunye nokuchaneka kokutya okuyi-±1%.
2. Inkqubo yePlastiki
Amacandelo angundoqo: isikrufu, umphanda, ukufudumeza kunye nezixhobo zokupholisa.
Umsebenzi: Indawo engundoqo "yokuguqulwa kwe-solid-liquid" yeeplastiki. I-screw rotation ivelisa amandla okucheba, athi, adityaniswe nokufudumeza okucandekileyo komphanda (ngokuqhelekileyo amacandelo ama-3-5), ngokuthe ngcembe athambe kwaye anyibilikise iplastiki eqinileyo; isixhobo sokupholisa (esifana nokupholisa amanzi okanye ukupholisa umoya) silawula iqondo lobushushu lomphanda ukunqanda ukufudumeza ngokugqithiseleyo kunye nokonakala kwezinto.
Iiparamitha ezingundoqo: Ubude bobude ukuya kwi-diameter ratio (L/D) ngokuqhelekileyo yi-20:1-30:1. Ubushushu bomphanda bulungiswa ngokwezinto zeplastiki (umzekelo, i-PE 180-220 ℃, i-PVC 160-190 ℃).
3. Inkqubo yoThutho
Amacandelo angundoqo: Imoto, ibhokisi yegiya, ukudibanisa.
Umsebenzi: Inika amandla azinzileyo kwi-screw kwaye ilawula isantya se-screw (ngokuqhelekileyo i-10-100 r / min). I-motor ihlala isebenzisa i-motor frequency frequency motor okanye i-servo motor, ivumela ukulungiswa kwesantya esichanekileyo; Ibhokisi yegiya yehlisa isantya semoto kwaye yonyusa itorque ukuhlangabezana neemfuno zomthwalo ophezulu wesikrufu.
4. Die Head and Mold System
Amacandelo angundoqo: Intloko yokufa (idibanisa i-barrel kunye nesikhunta), isikhunta (inquma i-cross-sectional shape yemveliso).
Umsebenzi: Yazisa iplastiki etyhidiweyo kwindawo yokubumba kwaye iyikhuphe kwiimilo ezithile (umzekelo, imibhobho, amaphepha, iiprofayili). I-mold kufuneka isetyenziswe ngokuchanekileyo ngokwemilinganiselo yemveliso. Iindidi eziqhelekileyo zibandakanya ukubunjwa kwemibhobho, i-flat-mouth molds (amaphepha / iifilimu), kunye ne-molds-shaped molds (iiprofayili zomnyango kunye nefestile).
5. Ukubunjwa, ukuPholisa, kunye neNkqubo yeTraction
Izixhobo eziphambili: Umkhono wokubumba (umzekelo, umkhono we-vacuum sizing, i-calendering roller), itanki yokupholisa (i-water-cooled / air-cooled), umatshini wokutsala.
Umsebenzi: Ukupholisa ngokukhawuleza kunye nokubunjwa kweprofayili yobushushu obuphezulu obugqithisiweyo, ngelixa kwangaxeshanye uyibambe ngesantya esifanayo ngomatshini wokutsala ukuqinisekisa ukuzinza komgangatho wemveliso (umzekelo, ukuphambuka kobunzima bodonga lombhobho ≤ ± 0.1mm). Isantya sokutsala kufuneka sihambelane nesantya se-extrusion ukuthintela ukolula kwemveliso okanye ukushwabana.
Ngokuxhomekeke kwiimfuno zemveliso, sinokubonelelaii-extruders ezine-screw enye, i-i-twin-screw extruders, kunye nemigca yokuvelisa i-extrusion.
