Mu njira yopangira kutembenuza tinthu tapulasitiki kukhala zinthu zapulasitiki, mapulasitiki nthawi zambiri amakhala ndi kutentha kwambiri komanso kuthamanga kwambiri, ndikuwumba koyenda pamitengo yayitali kwambiri.Zosiyanasiyana akamaumba zinthu ndi ndondomeko adzakhala ndi zotsatira zosiyana pa khalidwe mankhwala.Jekeseni akamaumba ali pulasitiki Zimakhala mbali zinayi: zopangira, jekeseni akamaumba makina, nkhungu ndi jekeseni akamaumba ndondomeko.
Ubwino wa zinthu zikuphatikizapo khalidwe la mkati ndi maonekedwe.Mkati zakuthupi khalidwe makamaka mawotchi mphamvu, ndi kukula kwa nkhawa mkati mwachindunji zimakhudza mawotchi mphamvu ya mankhwala.Zifukwa zazikulu zopangira kupsinjika kwamkati zimatsimikiziridwa ndi crystallinity ya chinthucho ndi momwe ma molekyulu amapangidwira mu pulasitiki.za.Maonekedwe abwino a mankhwalawa ndi mawonekedwe apamwamba a mankhwala, koma kumenyana ndi kusinthika kwa mankhwala chifukwa cha kupsinjika kwakukulu kwa mkati kudzakhudzanso maonekedwe abwino.Maonekedwe khalidwe la mankhwala zikuphatikizapo: mankhwala osakwanira, mano mankhwala, zizindikiro kuwotcherera, kung'anima, thovu, mawaya siliva, mawanga wakuda, mapindikidwe, ming'alu, delamination, peeling ndi ma discoloration, etc., zonse zokhudzana akamaumba kutentha, kuthamanga, otaya, nthawi. ndi udindo.zokhudzana.
Zamkatimu
Gawo 1: Kutentha kwa kutentha
Gawo Lachiwiri: Kupanga kukakamiza
Gawo lachitatu: jekeseni akamaumba makina liwiro
Gawo Lachinayi: Kukhazikitsa nthawi
Gawo Lachisanu: Kuwongolera Udindo
Gawo 1: Kutentha kwa kutentha
Kutentha kwa mbiya:Ndiko kusungunuka kwa kutentha kwa pulasitiki.Ngati kutentha kwa mbiya kumakwera kwambiri, kukhuthala kwa pulasitiki pambuyo posungunuka kumakhala kochepa.Pansi pa jekeseni yemweyo komanso kuthamanga kwa kuthamanga, kuthamanga kwa jekeseni kumathamanga, ndipo zinthu zopangidwa ndizomwe zimapangidwira kung'anima, siliva, kusinthika ndi kuphulika.
Kutentha kwa mbiya ndikotsika kwambiri, pulasitiki imakhala yosapangidwa bwino, kukhuthala kwake ndikwambiri, liwiro la jakisoni limachedwa pang'onopang'ono pansi pa kuthamanga komweko kwa jekeseni komanso kuthamanga kwamayendedwe, zinthu zomwe zimapangidwira sizikwanira, zizindikiro zowotcherera zimawonekera, miyeso ndi zosakhazikika ndipo pali zotchinga zozizira muzogulitsa.
Kutentha kwa Nozzle:Ngati kutentha kwa nozzle kwakwera kwambiri, mphunoyo imasungunuka mosavuta, zomwe zimapangitsa kuti pakhale ma filaments ozizira.Low nozzle kutentha kumayambitsa clogging wa nkhungu kuthira dongosolo.Kuthamanga kwa jekeseni kuyenera kuwonjezeredwa kuti muyike pulasitiki, koma padzakhala zinthu zozizira mu mankhwala opangidwa nthawi yomweyo.
Kutentha kwa nkhungu:Ngati kutentha kwa nkhungu kuli kwakukulu, kuthamanga kwa jekeseni ndi kuthamanga kwa magazi kungathe kuchepetsedwa.Komabe, pa kuthamanga komweko ndi kuthamanga komweko, mankhwalawa amatha kung'anima mosavuta, kugwedezeka ndi kupunduka, ndipo zidzakhala zovuta kuchotsa mankhwala kuchokera ku nkhungu.Kutentha kwa nkhungu kumakhala kochepa, ndipo pansi pa kuthamanga kwa jekeseni komweko ndi kuthamanga kwa magazi, mankhwalawa ndi insufficiently anapanga, ndi thovu ndi zizindikiro weld, etc.
Kutentha kwa pulasitiki:Mapulasitiki osiyanasiyana amakhala ndi kutentha kosiyanasiyana.Mapulasitiki a ABS nthawi zambiri amayika kutentha kwa 80 mpaka 90 ° C, apo ayi zidzakhala zovuta kuumitsa ndi kusungunula chinyezi ndi zosungunulira zotsalira, ndipo zinthuzo zimakhala ndi mawaya asiliva ndi thovu mosavuta, ndipo mphamvu zazinthuzo zidzachepanso.
Gawo Lachiwiri: Kupanga kukakamiza
Pre-molding back pressure:kupanikizika kwambiri mmbuyo ndi kachulukidwe kosungirako kumatanthauza kuti zinthu zambiri zitha kusungidwa mkati mwa voliyumu yosungira yomweyi.Kuthamanga kwapansi kumatanthauza kusungirako kochepa komanso kusungirako zinthu zochepa.Pambuyo pokhazikitsa malo osungira, ndiyeno kupanga kusintha kwakukulu kwa kukakamiza kumbuyo, muyenera kumvetsera kukonzanso malo osungiramo zinthu, mwinamwake izo zidzayambitsa mosavuta kung'anima kapena mankhwala osakwanira.
Kuthamanga kwa jekeseni:Mitundu yosiyanasiyana ya mapulasitiki imakhala ndi ma viscosity osiyanasiyana osungunuka.Kukhuthala kwa mapulasitiki amorphous kumasintha kwambiri ndi kusintha kwa kutentha kwa plasticizing.Kuthamanga kwa jekeseni kumayikidwa molingana ndi kutsekemera kwa kutsekemera kwa pulasitiki ndi chiŵerengero cha ndondomeko ya pulasitiki.Ngati mphamvu ya jekeseniyo yatsika kwambiri, mankhwalawa adzakhala osakwanira, zomwe zimapangitsa kuti pakhale madontho, zizindikiro za weld ndi miyeso yosakhazikika.Ngati kupanikizika kwa jekeseni kuli kwakukulu kwambiri, mankhwalawa adzakhala ndi kung'anima, kusinthika komanso kuvutika potulutsa nkhungu.
Clamping pressure:Zimatengera dera lomwe likuyembekezeredwa la nkhungu komanso kuthamanga kwa jekeseni.Ngati kuthamanga kwa clamping sikukwanira, mankhwalawa amatha kuwunikira mosavuta ndikuwonjezera kulemera.Ngati clamping mphamvu ndi yaikulu, zidzakhala zovuta kutsegula nkhungu.Nthawi zambiri, kukakamiza kwa clamping sikuyenera kupitilira 120par/cm2.
Kugwira pressure:Jakisoniyo akamaliza, wonongayo imapitilirabe kupatsidwa mphamvu yomwe imatchedwa kukakamiza.Panthawi imeneyi, mankhwala mu nkhungu patsekeke sanabadwe atapanga.Kusunga kupanikizika kumatha kupitiriza kudzaza nkhungu kuti zitsimikizire kuti mankhwalawa ndi odzaza.Ngati kukakamiza kogwirizira ndi kuyika kwapang'onopang'ono ndikwambiri, kumabweretsa kukana kwakukulu kwa nkhungu yothandizira ndi pachimake chokoka.Chogulitsacho chimasanduka choyera komanso chopindika mosavuta.Kuonjezera apo, chipata chothamanga cha nkhungu chidzakulitsidwa mosavuta ndikumangika ndi pulasitiki yowonjezera, ndipo chipata chidzasweka mwa wothamanga.Ngati kupanikizika kuli kochepa kwambiri, mankhwalawa adzakhala ndi mano ndi miyeso yosakhazikika.
Mfundo yoyika ejector ndi mphamvu ya nyutroni ndikuyika kupanikizika kutengera kukula kwa malo a nkhungu, malo owonetsera pakatikati, ndi zovuta za geometric za chinthu chopangidwa.kukula.Nthawi zambiri, izi zimafunikira kuyika kukakamiza kwa nkhungu yothandizira ndi silinda ya nyutroni kuti athe kukankhira mankhwala.
Gawo lachitatu: jekeseni akamaumba makina liwiro
Liwiro la screw: Kuphatikiza pa kuwongolera kuthamanga kwa pulasitiki kusanachitike, kumakhudzidwa makamaka ndi pre-plastic back pressure.Ngati chiwombankhanga chisanayambe chiwongolero chikusinthidwa kukhala mtengo waukulu ndipo kupanikizika kusanachitike kuumba kumbuyo kuli kwakukulu, pamene wononga imazungulira, pulasitiki idzakhala ndi mphamvu yaikulu yometa ubweya mu mbiya, ndipo mawonekedwe a pulasitiki amadulidwa mosavuta. .Chogulitsacho chidzakhala ndi mawanga akuda ndi mikwingwirima yakuda, zomwe zidzakhudza maonekedwe ndi mphamvu ya mankhwala., ndipo kutentha kwa mbiya kumakhala kovuta kulamulira.Ngati chiwongolero cha pulasitiki chisanakhale chochepa kwambiri, nthawi yosungiramo pulasitiki isanakwane idzakulitsidwa, zomwe zidzakhudza kuzungulira kozungulira.
Kuthamanga kwa jekeseni:Kuthamanga kwa jekeseni kuyenera kukhazikitsidwa moyenera, apo ayi zidzakhudza khalidwe la mankhwala.Ngati jekeseni ili mofulumira kwambiri, mankhwalawa adzakhala ndi thovu, kuwotcha, otayika, ndi zina zotero.
Kuthandizira nkhungu ndi kuchuluka kwa ma neutron:sayenera kukhala okwera kwambiri, apo ayi ejection ndi mayendedwe kukoka pachimake adzakhala mofulumira kwambiri, chifukwa kusakhazikika ejection ndi pachimake kukoka, ndipo mankhwala mosavuta kutembenukira woyera.
Gawo Lachinayi: Kukhazikitsa nthawi
Nthawi yowuma:Ndi nthawi yowumitsa zinthu zapulasitiki.Mitundu yosiyanasiyana ya mapulasitiki imakhala ndi kutentha koyenera kuyanika komanso nthawi.Kutentha kwa pulasitiki ya ABS ndi 80 ~ 90 ℃ ndipo nthawi yowumitsa ndi maola awiri.Pulasitiki ya ABS nthawi zambiri imatenga madzi 0.2 mpaka 0.4% mkati mwa maola 24, ndipo madzi omwe amatha kupangidwa ndi 0.1 mpaka 0.2%.
Jekeseni ndi nthawi yogwira ntchito:Njira yowongolera yamakina a jakisoni apakompyuta imakhala ndi jakisoni wamitundu ingapo kuti asinthe kuthamanga, kuthamanga ndi kuchuluka kwa pulasitiki ya jakisoni m'magawo.Kuthamanga kwa pulasitiki kulowetsedwa mu nkhungu kumafika pa liwiro lokhazikika, ndipo maonekedwe ndi khalidwe lamkati la zinthu zomwe zimapangidwira zimakhala bwino.
Choncho, jekeseni nthawi zambiri amagwiritsa ntchito kulamulira malo m'malo mwa nthawi.Kupanikizika kogwira kumayendetsedwa ndi nthawi.Ngati nthawi yogwirayo ndi yayitali, kachulukidwe kazinthuzo ndi kachulukidwe, kulemera kwake ndi kolemetsa, kupsinjika kwamkati kumakhala kwakukulu, kuwongolera kumakhala kovuta, kosavuta kuyera, ndipo kuzungulira kukukulirakulira.Ngati nthawi yogwira ndi yochepa kwambiri, mankhwalawa amatha kukhala ndi dents ndi miyeso yosakhazikika.
Nthawi yoziziritsa:Ndiko kuonetsetsa kuti mankhwalawa ndi okhazikika mu mawonekedwe.Pamafunika kuziziritsa kokwanira ndi kuumba nthawi pulasitiki jekeseni mu nkhungu kuumbidwa mu mankhwala.Kupanda kutero, mankhwalawa ndi osavuta kupotoza ndikupunduka pamene nkhungu imatsegulidwa, ndipo ejection ndiyosavuta kupunduka ndikukhala yoyera.Nthawi yoziziritsa ndi yayitali kwambiri, zomwe zimatalikitsa kuzungulira ndikuwumba ndipo ndizopanda ndalama.
Gawo Lachisanu: Kuwongolera Udindo
Malo osuntha nkhungu ndi mtunda wonse wosuntha kuchokera ku kutsegula nkhungu kupita kutseka ndi kutseka, komwe kumatchedwa malo osuntha.Malo abwino osunthira nkhungu ndikutha kutulutsa mankhwala bwino.Ngati mtunda wotsegulira nkhungu ndi waukulu kwambiri, kuzungulira kudzakhala kwautali.
Malingana ngati malo a chithandizo cha nkhungu akuwongoleredwa, malo a ejection kuchokera ku nkhungu akhoza kuchotsedwa mosavuta ndipo mankhwala akhoza kuchotsedwa.
Malo osungira:Choyamba, kuchuluka kwa pulasitiki komwe kumalowetsedwa muzopangidwa kuyenera kutsimikiziridwa, ndipo kachiwiri, kuchuluka kwa zinthu zomwe zasungidwa mu mbiya ziyenera kuyendetsedwa.Ngati malo osungirako akuwongoleredwa ndi kuwombera kopitilira kamodzi, mankhwalawa amatha kuwunikira mosavuta, apo ayi mankhwalawa adzapangidwa mokwanira.
Ngati mu mbiya muli zinthu zambiri, pulasitiki idzakhala mu mbiya kwa nthawi yaitali, ndipo mankhwalawo amazimiririka mosavuta ndi kukhudza mphamvu ya mankhwala opangidwa.M'malo mwake, zimakhudza mtundu wa pulasitiki wa pulasitiki, ndipo palibe zinthu zomwe zimadzazitsidwanso mu nkhungu panthawi yolimbikitsira, zomwe zimapangitsa kuti mankhwalawa asapangidwe ndi mano.
Mapeto
Ubwino wa mankhwala opangidwa ndi jekeseni umaphatikizapo kupanga mankhwala, zipangizo zapulasitiki, mapangidwe a nkhungu ndi khalidwe lokonzekera, kusankha makina opangira jekeseni ndi kusintha kwa ndondomeko, ndi zina zotero. .Kuganizira mozama komanso mozama za nkhani, zosintha zitha kupangidwa chimodzi ndi chimodzi kuchokera kuzinthu zingapo kapena zingapo zitha kusinthidwa nthawi imodzi.Komabe, njira yosinthira ndi mfundo zimadalira momwe zinthu zimapangidwira panthawiyo.
Nthawi yotumiza: Nov-15-2023