I-mold yeplastiki yenziwe ikakhulu ngamacandelo amathathu: inkqubo yokugalela, iindawo ezibunjiweyo kunye neendawo zesakhiwo. Inkqubo yokugalela kunye neendawo ezibunjiweyo zezona nxalenye zidibana ngqo neplastiki kwaye zitshintshana neemveliso zebhokisi yeplastiki. Zezona zinzima kwaye zitshintsha kakhulu kwii-mold zeplastiki. Zifuna ukugqitywa kokulungiswa. Kwaye lelona candelo lichanekileyo.
Inkqubo yokuthulula i-mold yeplastiki ibhekisa kwinxalenye ye-runner ngaphambi kokuba iplastiki ingene kwi-cavity isuka kwi-nozzle, kubandakanya i-runner ephambili, i-cold slug, i-runner kunye ne-gate, njl. Iindawo ezibunjiweyo zibhekisa kwiindawo ezahlukeneyo ezenza imo yemveliso, kubandakanya ii-molds ezishukumayo, ii-molds ezizinzileyo kunye ne-cavities, ii-cores, ii-molding rods, kunye nee-vents.
1. Izinto eziqhelekileyo
Yindlela ekwimoldi edibanisa umlomo womatshini wokujova kwi-runner okanye kwi-cavity. Umphezulu we-runner ephambili ugobile ukuze udibane nomlomo.
Ububanzi bomngxuma ophambili kufuneka bube bukhulu kancinci kunobubanzi bombhobho (0.8mm) ukuze kuthintelwe ukugcwala kwamanzi nokuthintela ukuba ezi zimbini zingavalwa ngenxa yoqhagamshelo olungachanekanga.
Ububanzi bomngxuma wokungena buxhomekeke kubukhulu bemveliso, ngokubanzi yi-4-8mm. Ububanzi bomngxuma oyintloko kufuneka bandiswe ngaphakathi nge-engile ye-3° ukuya kwi-5° ukuze kube lula ukukhupha umngxuma.
2.umngxuma wezinto ezibandayo
Yindawo engaphakathi kwesixhobo esiphambili sokubamba izinto ezibandayo ezenziwe phakathi kweenaliti ezimbini ekupheleni kwesixhobo sokuthintela ukuvaleka kwesixhobo okanye isango. Nje ukuba izinto ezibandayo zixutywe kwindawo engaphakathi, uxinzelelo lwangaphakathi lunokwenzeka kwimveliso eyenziweyo.
Ububanzi bomngxuma wezinto ezibandayo bumalunga ne-8-l0mm, kwaye ubunzulu buyi-6mm. Ukuze kube lula ukudilika, umzantsi udla ngokuthwalwa yintonga yokudilika. Umphezulu wentonga yokuhluba kufuneka wenziwe ngendlela yehoko egobileyo okanye ubekwe ngomngxuma ogobileyo, ukuze i-sprue ikwazi ukutsalwa kakuhle ngexesha lokudilika.
3. imbaleki
Yindlela edibanisa umqadi oyintloko kunye nomngxuma ngamnye kwi-mold ene-slot ezininzi. Ukuze ukunyibilika kuzalise imingxuma ngesantya esifanayo, ukulungelelaniswa kwe-runners kwi-mold kufuneka kube ngokulinganayo kwaye kulingane. Ubume kunye nobukhulu be-cross-section ye-runner bunempembelelo ekuhambeni kwe-melt yeplastiki, ukususwa kwemveliso kunye nobunzima bokwenziwa kwe-mold.
Ukuba kusetyenziswa ukuhamba kwenani elifanayo lezinto, ukumelana kwendlela yokuhamba kwecandelo elijikelezayo le-cross kuncinci. Nangona kunjalo, ngenxa yokuba umphezulu othile we-cylindrical runner umncinci, awulungelanga ukupholisa kwe-runner reduent, kwaye i-runner kufuneka ivulwe kwiinxalenye ezimbini ze-mold, ezinzima kwaye kulula ukuzilungelelanisa.
Ixesha lokuthumela: Septemba-27-2021