Midziyo mikuru yekugadzira molding i hydraulic press. Basa remuchina we hydraulic press mukuita kwekudzvanya nderekuisa kumanikidzwa papurasitiki kuburikidza nemold, kuvhura mold uye kuburitsa chigadzirwa.
Kuumba mapurasitiki e thermosetting kunonyanya kushandiswa pakuumba mapurasitiki e thermosetting. Kune ma thermoplastics, nekuda kwekudiwa kwekugadzirira nzvimbo isina chinhu pachine nguva, inofanira kupiswa nekutonhodzwa zvichichinjana, saka nguva yekugadzira yakareba, kushanda zvakanaka kwekugadzira kwakaderera, uye simba rinoshandiswa rakawanda. Uyezve, zvigadzirwa zvine maumbirwo akaomarara uye saizi dzakanyatsojeka hazvigone kudzvanywa. Ndokusaka maitiro ese ekugadzira mapurasitiki e thermosetting asingadhuri.
Iyomuchina wekumanikidza wekuumba(kupfupisa) inoshandiswa pakuumba i hydraulic press. Kugona kwayo kudzvanya kunoratidzwa ne nominal tonnage, kazhinji, kune 40t ﹑ 630t ﹑ 100t ﹑ 160t ﹑ 200t ﹑ 250t ﹑ 400t ﹑ 500t series of presses. Kune anopfuura 1,000 matani e multi-layer presses. Zviri mukati me press specifications zvinosanganisira operating tonnage, ejection tonnage, platen size yekugadzirisa die, uye strokes ye operating piston ne ejection piston, nezvimwewo. Kazhinji, matemplate epamusoro nepazasi epress ane michina yekudziyisa nekutonhodza. Zvikamu zvidiki zvinogona kushandisa cold press (isina kudziyisa, mvura inotonhodza chete) yekugadzira nekutonhodza. Shandisa heating press chete yekupisa plasticization, iyo inogona kuchengetedza simba.
Zvichienderana nehuwandu hwezvishandiso zvemagetsi, michina yekudhinda inogona kukamurwa kuita michina yemaoko, michina ye semi-automatic, uye michina yekudhinda inozvigadzira yoga. Zvichienderana nehuwandu hwezvikamu zveplate yakatsetseka, inogona kukamurwa kuita michina yekudhinda ine mativi maviri uye michina yekudhinda yakawanda.
Muchina wekudzvanya we hydraulic muchina wekudzvanya unoshanda ne hydraulic transmission. Paunenge uchidzvanya, purasitiki inotanga yawedzerwa kumould yakavhurika. Wobva waisa mafuta ekudzvanya ku silinda iri kushanda. Zvichitungamirirwa ne column, piston nedanda rinofambiswa zvinofamba zvichidzika (kana kukwira) kuti zvivhare mould. Pakupedzisira, simba rinogadzirwa ne hydraulic press rinoendeswa kumould uye rinoita basa papurasitiki.
Plastiki iri mukati memold inonyunguduka uye inonyorova kana ichipisa. Mold inozadzwa nekumanikidzwa kubva ku hydraulic press uye chemical reaction inoitika. Kuti ibudise hunyoro nezvimwe zvinoputika zvinogadzirwa panguva ye condensation reaction yepurasitiki uye kuve nechokwadi chekuti chigadzirwa chiri nani, zvinodikanwa kuti ibvise kumanikidzwa uye ibudise. Inowedzera simba uye irambe iripo. Panguva ino, resin iri mupurasitiki inoramba ichiita chemical reactions. Mushure menguva yakati, insoluble uye infusible hard solid state inoumbwa, uye solidification molding inopedzwa. Mold inovhurwa pakarepo, uye chigadzirwa chinobviswa mumold. Mushure mekunge mold yacheneswa, denderedzwa rinotevera rekugadzira rinogona kuenderera mberi.
Zvinogona kuonekwa kubva mukuita kwataurwa pamusoro apa kuti tembiricha, kumanikidzwa, nenguva zvinhu zvakakosha pakuumbwa kwesimbi. Kuti muchina ubudirire uye kuchengetedzeka uye kuvimbika kwekushanda kwawo, kumhanya kwemuchina chinhu chakakosha chisingafanirwe kufuratirwa. Saka, muchina wepurasitiki we hydraulic unoshandiswa pakudzvanya unofanira kukwanisa kusangana nezvinodiwa zvinotevera:
① Kudzvanya kunofanira kukwana uye kugadziriswa, uye kunodiwawo kuti kusvikwe nekuramba kwakafanorongwa mukati menguva yakati.
② Danda rinofambiswa remuchina we hydraulic press rinogona kumira rodzoka chero nguva yekurohwa. Izvi zvakakosha zvikuru pakuisa ma molds, pre-pressing, batch charging, kana kutadza kushanda.
③ Danda rinofambiswa remuchina we hydraulic press rinogona kudzora kumhanya uye kushandisa simba rekushanda chero nguva yekurova. Kuzadzisa zvinodiwa zvema molds ane hurefu hwakasiyana.
Danda rinofambiswa remuchina we hydraulic press rinofanira kukurumidza kumhanya musina chinhu usati wabata chiumbwa chechirume chepurasitiki, kuitira kuti kupfupisa kutenderera kwekudzvanya, kunatsiridza kugadzirwa kwemuchina uye kudzivirira kudzikira kana kuoma kwekushanda kwepurasitiki. Kana chiumbwa chechirume chepurasitiki chabata chiumbwa, kumhanya kwekuvhara chiumbwa kunofanira kudzikiswa. Zvikasadaro, chiumbwa kana chinhu chinogona kukuvara kana kuti hupfu hunogona kusukwa kubva muchiumbwa chechikadzi. Panguva imwe chete, kudzikisa kumhanya kunogonawo kubvisa mweya uri muchiumbwa zvizere.
Nguva yekutumira: Kubvumbi-07-2023
