Kune nzira dzakawanda dzekuisa mumhando dzepurasitiki mold, uye dzinogona kukamurwa muzvikamu zvinotevera zvichienderana nenzira dzakasiyana dzekugadzira uye kugadzirisa zvikamu zvepurasitiki:
Jekiseni mold inonziwo jekiseni mold.Iyo yekuumbwa kweiyo mold inoratidzwa nekuisa iyo yepurasitiki mbishi zvinhu mumudziyo wekudziya wemushini wejekiseni.Plastiki inodziya uye yakanyungudutswa, uye inofambiswa nescrew kana plunger yemuchina wejekiseni, inopinda mugomba remuvhu kuburikidza nenozzle uye mold yekudurura system, uye purasitiki inoumbwa mugomba rekuumbwa nekuchengetedza kupisa, kumanikidza kubata, uye kutonhora.Nekuti iyo yekudziya uye yekutsikirira mudziyo inogona kushanda mumatanho, jekiseni kuumba haingogone kuumba zvikamu zvepurasitiki zvine maumbirwo akaomarara, asi zvakare kuve nepamusoro kugadzirwa kwemhando uye mhando yakanaka.Naizvozvo, kuumbwa kwejekiseni kunokonzeresa chikamu chikuru mukuumbwa kwezvikamu zvepurasitiki, uye majekiseni molds anotora inopfuura hafu yemapurasitiki ekuumba mold.Muchina wejekiseni unonyanya kushandiswa kuumba thermoplastics.Mumakore achangopfuura, yakashandiswawo zvishoma nezvishoma kugadzira thermosetting mapurasitiki.
Compression mold inonziwo compression mold kana rubber mold.Iyo yekuumba maitiro eiyo mold ndeyekuti iyo mapurasitiki mambishi anowedzerwa zvakananga kune yakavhurika mold cavity, uye ipapo mold inovharwa.Mushure mokunge plastiki iri mumamiriro ekunyunguduka pasi pechiito chekupisa uye kudzvinyirira, gomba rinozadzwa nekumwe kumanikidzwa.Panguva ino, chimiro chemolecular yepurasitiki yakagadzira kemikari crosslinking reaction, iyo yakaomesa zvishoma nezvishoma uye yakagadzika.Compression molds inonyanya kushandiswa ku thermosetting mapurasitiki, uye zvikamu zvepurasitiki zvakaumbwa zvinonyanya kushandiswa kudzimba dzemagetsi switch uye zvinodiwa zvezuva nezuva.
Transfer mold inonziwo jekiseni mold kana extrusion mold.Kuumbwa kwechiumbwa ichi kunoratidzwa mukuti iyo yepurasitiki mbishi inowedzerwa kune preheated yekudyisa kamuri, uye ipapo kudzvanywa kunoiswa kune epurasitiki mbishi zvinhu mukamuri yekudyisa nekoramu yekumanikidza.Plastiki inonyungudutswa pasi pekushisa kwakanyanya uye kumanikidzwa uye inopinda mugomba kuburikidza nekudurura kwe mold.Chemical cross-linking inoitika uye zvishoma nezvishoma inosimba.Iyo yekufambisa yekuumba maitiro inonyanya kushandiswa kune thermosetting mapurasitiki, ayo anogona kuumba zvakanyanya kuomarara zvikamu zvepurasitiki.
Extrusion die inonziwo extruder head.Mold iyi inogona kuramba ichigadzira mapurasitiki ane akafanana-sectional shape, senge pombi dzepurasitiki, tsvimbo, uye mapepa.Chishandiso cheextruder chekudziya nekutsikirira chakafanana neicho chemuchina wejekiseni.Plastiki yakanyungudutswa inopfuura nemumusoro wemuchina kuti igadzire inoenderera yakaumbwa chikamu chepurasitiki, icho chine kunyanya kugadzirwa kwakanyanya.
Nguva yekutumira: Aug-18-2021