Warpage deformation ndechimwe chezvikanganiso zvakajairika mukuumbwa kwejekiseni yezvikamu zvitete zvepurasitiki.Yakawanda yewarpage deformation analysis inotora qualitative analysis, uye matanho anotorwa kubva kuzvinhu zvekugadzirwa kwechigadzirwa, mold design uye jekiseni molding process mamiriro ekudzivirira hombe warpage deformation sezvinobvira.Semuenzaniso, zvimwe zvinowanzogadzirwa zvepurasitiki,epurasitiki shangu racks, mapepa epurasitiki, mabhureki epurasitiki, nezvimwewo
Panyaya ye mold, chinzvimbo, fomu uye nhamba yemasuwo ejekiseni mold inozokanganisa mamiriro ekuzadza epurasitiki mugomba rekuumbwa, zvichikonzera deformation yezvikamu zvepurasitiki.Sezvo warpage deformation ine chekuita nekusaenzana shrinkage, hukama pakati pe shrinkage uye chigadzirwa warpage inoongororwa nekudzidza shrinkage maitiro emapurasitiki akasiyana pasi pemamiriro akasiyana maitiro.Inosanganisira pesvedzero yekusarira kwemafuta kushushikana pane warpage deformation yezvigadzirwa, uye pesvedzero yeplasticization nhanho, kuzadza mold uye kutonhora nhanho uye nhanho yekudzikisa pane warpage deformation yezvigadzirwa.
Mhedzisiro yekuderera kwejekiseni yakaumbwa zvigadzirwa pane warping deformation solution:
Chikonzero chakananga chewarpage deformation yezvigadzirwa zvakaumbwa jekiseni zviri mukuputsika kusina kuenzana kwezvikamu zvepurasitiki.Pakuongorora warpage, shrinkage pachayo haina kukosha.Chinokosha ndiko kusiyana kwe shrinkage.Mukuita kuumbwa kwejekiseni, nekuda kwekurongeka kwemapolymer mamorekuru padivi pekuyerera, kuderera kwemapurasitiki akanyungudutswa munzira yekuyerera kwakakura kupfuura iyo iri munzira yakatwasuka, zvichikonzera warpage uye deformation yezvikamu zvejekiseni.Kazhinji, shrinkage yeyunifomu inongokonzera shanduko muhuwandu hwezvikamu zvepurasitiki, uye chete shrinkage isina kuenzana inogona kukonzera warpage deformation.Musiyano uripo pakati pe shrinkage rate yecrystalline mapurasitiki munzira yekuyerera uye vertical direction yakakura kupfuura yeamorphous plastics, uye shrinkage rate yacho yakakurawo kupfuura yeamorphous plastics.Mushure mekukwirira kweiyo yakakura shrinkage mwero wecrystalline mapurasitiki uye anisotropy ye shrinkage, maitiro e warping deformation yecrystalline mapurasitiki akakura kupfuura ayo emapurasitiki amorphous.
Multistage jekiseni molding process yakasarudzwa zvichienderana nekuongororwa kwechigadzirwa geometry: nekuda kweiyo yakadzika mhango uye mutete madziro echigadzirwa, mold cavity inzira refu uye nhete.Apo kunyunguduka kunoyerera nepakati pechikamu ichi, inofanira kupfuura nokukurumidza, kana zvisina kudaro zviri nyore kutonhora uye kusimba, izvo zvinotungamirira kune ngozi yekuzadza mold cavity.Jekiseni rekukurumidza rinofanira kuiswa pano.Zvisinei, jekiseni repamusoro-soro richaunza simba rakawanda rekinetic pakunyunguduka.Kana iyo yakanyunguduka ichiyerera kusvika pasi, inoburitsa yakakura inertial kukanganisa, zvichikonzera kurasikirwa kwesimba uye kumucheto kufashukira.Panguva ino, zvinodikanwa kudzikamisa kuyerera kwekunyunguduka uye kuderedza mold yekuzadza kumanikidza, uye kuchengetedza iyo inowanzozivikanwa yekumanikidza kubata kumanikidza (yechipiri kumanikidza, yekutevera-kumanikidza) kuita kuti kunyunguduka kuwedzere shrinkage yekunyungudika. kupinda mukati megomba gedhi risati rasimba, izvo zvinoisa kumberi zvinodiwa zveakawanda-nhanho jekiseni kumhanya uye kumanikidza kwekuita jekiseni.
Mhinduro kune warpage uye deformation yezvigadzirwa zvinokonzerwa nekusara kwekupisa kwekushushikana:
Velocity yemvura inoyerera inofanira kunge yakamira.Rapid glue jekiseni richagamuchirwa kudzivirira kunyunguduka kubva kuchando panguva yejekiseni reglue.Kugadzika kweglue jekiseni kumhanya kunofanirwa kufunga nezve kukurumidza kuzadza munzvimbo yakakosha (yakadai seyekuyerera chiteshi) uye inononoka painopinza mvura.Iyo glue jekiseni kumhanya kunofanirwa kuve nechokwadi kuti inomira pakarepo mushure mekunge mold cavity yazadzwa kudzivirira kuwandisa, kupenya uye kusara kunetseka.
Nguva yekutumira: May-17-2022