Mfundo zazikuluzikulu zaNanhai YaPulasitiki Extruder Machine ndi "kutumiza mosalekeza, kupangira pulasitiki kothandiza kwambiri, komanso kuumba kokhazikika."
Extruder imakhala ndi machitidwe asanu kuyambira pakudyetsa mpaka kuumba, iliyonse ili ndi ntchito yodziwika bwino komanso imagwira ntchito mogwirizana:
1. Kudyetsa Dongosolo
Zigawo zapakati: hopper, feeder (yogawika m'zakudya zokoka komanso kudyetsa mokakamiza).
Ntchito: Imatumiza mokhazikika ma granules/ufa wa pulasitiki kugawo lazakudya zowononga, kupewa "kutsekereza" (kutsekeka kwa zinthu mu hopper). Ma feeder okakamizidwa (monga ma twin-screw feeders) ndi oyenera kukhuthala kwambiri kapena zinthu zophatikizika mosavuta, zokhala ndi chakudya chokwanira ± 1%.
2. Plasticizing System
Zigawo zapakati: screw, mbiya, kutentha ndi kuziziritsa zida.
Ntchito: Malo oyambira "kutembenuka kwamadzimadzi" apulasitiki. Kuzungulira kozungulira kumatulutsa mphamvu yakumeta ubweya, yomwe, kuphatikiza ndi kutentha kwapakati kwa mbiya (nthawi zambiri magawo 3-5), imafewetsa pang'onopang'ono ndikusungunula pulasitiki yolimba; chipangizo choziziritsa (monga kuziziritsa madzi kapena kuziziritsa mpweya) chimayang'anira kutentha kwa mbiya kuteteza kutenthedwa ndi kuwonongeka kwa zinthu.
Zofunikira zazikulu: Chiyerekezo cha screw-to-diameter (L/D) nthawi zambiri chimakhala 20:1-30:1. Kutentha kwa mbiya kumasinthidwa malinga ndi zinthu zapulasitiki (mwachitsanzo, PE 180-220 ℃, PVC 160-190 ℃).
3. Njira yotumizira
Zigawo zapakati: Motor, gearbox, coupling.
Ntchito: Amapereka mphamvu yokhazikika pa screw ndikuwongolera liwiro la screw (nthawi zambiri 10-100 r/min). Galimotoyo nthawi zambiri imagwiritsa ntchito ma frequency motor motor kapena servo motor, kulola kusintha kolondola kwa liwiro; bokosi la giya limachepetsa liwiro la mota ndikuwonjezera torque kuti likwaniritse zofunikira zonyamula katundu wa screw.
4. Die Mutu ndi Mold System
Zigawo zapakati: Die mutu (amagwirizanitsa mbiya ndi nkhungu), nkhungu (imatsimikizira mawonekedwe amtundu wa mankhwala).
Ntchito: Imalowetsa pulasitiki yosungunuka mu nkhungu ndikuitulutsa m'mawonekedwe enieni (mwachitsanzo, mapaipi, mapepala, mbiri). Chikombolecho chimayenera kukonzedwa bwino molingana ndi kukula kwake. Mitundu yodziwika bwino imaphatikizapo nkhungu za zitoliro, zoumba pakamwa pakamwa (mapepala/mafilimu), ndi zisankho zowoneka bwino (zojambula zapakhomo ndi zenera).
5. Kupanga, Kuzizira, ndi Dongosolo Lamakoka
Zigawo Zapakati: Manja oumba (monga mavacuum sizing, roller calendering), thanki yozizirira (yozizira madzi / mpweya), makina okokera.
Ntchito: Mofulumira kuziziritsa ndi kuumba extruded mkulu-kutentha mbiri, pamene tractioning pa liwiro yunifolomu kudzera makina traction kuonetsetsa kukhazikika dimensional mankhwala (mwachitsanzo, chitoliro khoma makulidwe kupatuka ≤ ± 0.1mm). Liwiro lokokera liyenera kufanana ndi liwiro la extrusion kuti mupewe kutambasula kapena makwinya.
Malingana ndi zofunikira zopanga, titha kuperekasingle-screw extruders, mapasa-screw extruders, ndi mizere yopanga extrusion.
