Chinhu chikuru chekugadzira kugadzira ndeye hydraulic press.Basa remushini we hydraulic press muchina wekutsikirira ndere kuisa kumanikidza kupurasitiki kuburikidza ne mold, kuvhura mold uye bvisa chigadzirwa.
Compression molding inonyanya kushandiswa kugadzira thermosetting mapurasitiki.Kune thermoplastics, nekuda kwechido chekugadzirira chisina kumberi, inoda kudziyisa uye kutonhodzwa zvakachinjana, saka kutenderera kwekugadzira kwakareba, kugona kwekugadzira kwakadzikira, uye simba rekushandisa rakakura.Uyezve, zvigadzirwa zvine maumbirwo akaomarara uye nemasaizi chaiwo haagone kudzvanywa.Saka iyo yakajairika maitiro kune yakawedzera hupfumi jekiseni molding.
Thecompression molding muchina(press for short) inoshandiswa kuumba is hydraulic press.Kutsikirira kwayo kunoratidzwa mune zita rematani, kazhinji, kune 40t ﹑ 630t ﹑ 100t ﹑ 160t ﹑ 200t ﹑ 250t ﹑ 400t ﹑ 500t mutsara wemichina.Kune anopfuura 1,000 matani e-multi-layer presses.Izvo zvikuru zviri mukati mezvinyorwa zvepepanhau zvinosanganisira kushanda tonnage, ejection tonnage, platen size yekugadzirisa kufa, uye sitiroko zvepiston yekushandisa uye ejection piston, nezvimwewo. Kazhinji, matemplate epamusoro uye epasi ekudhinda ane zvigadzirwa zvekupisa uye kutonhora. .Zvikamu zvidiki zvinogona kushandisa muchina unotonhora (hapana kudziyisa, mvura inotonhorera chete) yekuumba uye kutonhora.Shandisa iyo yekupisa yekupisa chete yekupisa yepurasitiki, iyo inogona kuchengetedza simba.
Zvinoenderana nechiyero che otomatiki, michina yekutsikirira inogona kukamurwa kuita mitsipa yemaoko, semi-otomatiki mashini, uye zvizere otomatiki.Zvinoenderana nehuwandu hwezvikamu zveplate flat, inogona kukamurwa kuita kaviri-layer uye multi-layer presses.
A hydraulic press muchina wekumanikidza unofambiswa ne hydraulic transmission.Kana uchidzvanya, plastiki inotanga kuwedzerwa kune yakashama mold.Zvadaro fudza mafuta ekumanikidza kune silinda inoshanda.Kutungamirwa nekoramu, piston uye danda rinotakurika rinodzika pasi (kana kumusoro) kuvhara mold.Pakupedzisira, simba rinogadzirwa ne hydraulic press rinoendeswa kune mold uye rinoshanda papurasitiki.
Ipurasitiki mukati me mold inonyunguduka uye inonyorovesa pasi pechiito chekupisa.Iyo mold inozadzwa nekumanikidzwa kubva kune hydraulic press uye kemikari inoitika.Kuti ubvise hunyoro uye humwe hunyoro hunogadzirwa panguva yekugadziriswa kwemapurasitiki uye kuve nechokwadi chemhando yechigadzirwa, zvinodikanwa kuita kudzoreredza uye kupera simba.Kurumidza kuwedzera uye chengetedza.Panguva ino, resin mupurasitiki inoenderera mberi nekuita kemikari.Mushure meimwe nguva yenguva, insoluble uye infusible yakaoma yakasimba nyika inoumbwa, uye kuumbwa kwekusimbisa kunopedzwa.Iyo mold inozarurwa pakarepo, uye chigadzirwa chinotorwa kunze kwekuumbwa.Mushure mekunge mold yacheneswa, denderedzwa rinotevera rekugadzira rinogona kuenderera.
Zvinogona kuonekwa kubva pane zviri pamusoro apa kuti tembiricha, kudzvanywa, uye nguva zvinhu zvakakosha zvekumanikidza kuumbwa.Kuti uvandudze kugadzirwa kwemuchina uye kuchengetedzwa uye kuvimbika kwekushanda, kumhanya kwekushanda kwemuchina zvakare chinhu chakakosha chisingagoni kuregererwa.Naizvozvo, iyo yepurasitiki hydraulic press inoshandiswa kudzvanya inofanirwa kukwanisa kuzadzisa zvinotevera zvakakosha zvinodiwa:
① Kudzvanya kunofanirwa kuve kwakakwana uye kuchinjika, uye kunodiwawo kusvika nekuchengetedza iyo yakafanotemerwa kudzvanywa mukati meimwe nguva yenguva.
② Iyo inofambiswa danda re hydraulic press inogona kumira uye kudzoka chero nguva mukurova.Izvi zvinonyanya kukosha kana uchiisa molds, pre-pressing, batch kuchaja, kana kutadza.
③ Iyo inofambiswa danda re hydraulic press rinogona kudzora kumhanya uye kushandisa kushanda nesimba chero nguva mukurohwa.Kusangana nezvinodiwa zvezviumbwa zvehurefu hwakasiyana.
Iyo inofambiswa danda re hydraulic press inofanirwa kukurumidza kukurumidza mukurova isina chinhu pamberi pechirume mold yabata purasitiki, kuitira kupfupisa kutenderera kutenderera, kunatsiridza kugadzirwa kwemuchina uye kudzivirira kudzikisira kana kuomarara kwekuyerera kwepurasitiki.Kana mold yechirume inobata purasitiki, iyo mold yekuvhara yekumhanyisa inofanira kudzikiswa.Zvikasadaro, mold kana kupinza kunogona kukuvadzwa kana hupfu hunogona kugezwa kubva muhukadzi.Panguva imwecheteyo, kuderedza kukurumidza kunogonawo kubvisa zvakakwana mhepo mu mold.
Nguva yekutumira: Kubvumbi-07-2023
