Hi wahi Maendlelo ya Xivumbeko xa Swiphemu swa Tipulasitiki?
Hi wahi Maendlelo ya Xivumbeko xa Swiphemu swa Tipulasitiki?
Dizayini ya maendlelo ya xivumbeko xa swiphemu swa plastiki ngopfu ngopfu yi katsa ku tekeriwa enhlokweni kufana na geometry, ku pakanisa ka dimensional, draw ratio, surface roughness, wall thickness, draft angle, hole diameter, fillet radii, mold draft angle, na reinforcement ribs. Xihloko lexi xita andlala yin’wana na yin’wana ya tinhla leti xikan’we naku burisana hi ndlela yo antswisa swiaki leswi hinkarhi wa maendlelo ya thermoforming kuva ku antswisiwa khwalithi ya swihumelerisiwa xikan’we naku tirha kahle ka vuhumelerisi.
1. Geometry na Ku pakanisa ka Dimensional
Ku sukela ku vumba ka pulasitiki hi ku hisa i ndlela ya vumbirhi yo lulamisa, ngopfu ngopfu eka ku vumba vacuum, kutala kuva na xivandla exikarhi ka xiphepherhele xa plastiki na xivumbeko. Ku engetela kwalano, ku hunguteka na ku onhaka, ngopfu ngopfu eka tindzhawu leti humelaka ehandle, swinga endla leswaku ku enta ka rirhangu kuva ku olova, leswi endlaka leswaku kuhunguteka matimba. Hikokwalaho, swiphemu swa plastiki leswi tirhisiwaka eka ku vumba vacuum aswifanelanga kuva na swilaveko swo tika swinene swa geometry na dimensional accuracy.
Hi nkarhi wa maendlelo yo vumba, xiphepherhele xa plastiki lexi hisiweke xi le ka xiyimo xo ololoka lexi nga siveleriwangiki, leswi nga endlaka leswaku xi rhetela. Ku hlanganisiwa na ku kufumela lokukulu naku hunguteka endzhaku ka demolding, ti dimensions tohetelela na xivumbeko xa xiendliwa swinga tshamiseka hikokwalaho ka mahiselo xikan’we naku cinca ka mbango. Hi xivangelo lexi, swiphemu swa plastiki leswi endliweke hi thermoformed aswi ringanelanga eka switirhisiwa swa precision molding.
2. Dirowa Ratio
Draw ratio, leyi nga ratio ya ku leha ka xiphemu (kumbe ku enta) eka ku anama ka xona (kumbe diameter), ngopfu ngopfu yi boha ku tika ka endlelo ro vumba. Loko draw ratio yiri yikulu, maendlelo yo vumba ya tika swinene, naswona kutala kuva na timhaka letinga tsakisiki tofana na ku rhurhumela kumbe ku pandzeka. Ti draw ratios leti tlulaka mpimo ti hunguta swinene matimba na ku tiya ka xiphemu. Hikokwalaho, eka vuhumelerisi bya xiviri, range yale hansi ka maximum draw ratio yitala kutirhisiwa, hi xitalo exikarhi ka 0.5 na 1.
Nhlayo ya draw yi fambelana hiku kongoma na vukulu bya le hansi bya rirhangu ra xiphemu. Dray ratio leyintsongo yinga endla marhangu yo tiya, lawa ya lulameleke ku vumbiwa ka ti sheet to olova, kasi draw ratio leyikulu yilava maphepha yo tiya kutiyisisa leswaku ku enta ka rirhangu akuri ku tsindziyela ngopfu. Ku engetela kwalano, draw ratio yitlhela yi fambelana na mold draft angle xikan’we naku ololoka ka plastiki material. Ku tiyisisa khwalithi ya swihumelerisiwa, draw ratio yifanele ku lawuriwa kuva ku papalatiwa ku tlakuka ka scrap rate.
3. Dizayini ya Fillet
Makhon’wa lama tlhavaka a ma fanelanga ma endliwa emakhoneni kumbe emakumu ka swiphemu swa pulasitiki. Ematshan’wini ya sweswo, kufanele kutirhisiwa fillet leyikulu hilaha swinga kotekaka hakona, laha radius yale khoneni hi xitalo yingari yitsongo kutlula 4 kuya eka 5 times ku enta ka sheet. Ku tsandzeka ku endla tano swi nga endla leswaku nchumu wolowo wu olova ni ku tala ka ntshikilelo, leswi khumbaka matimba ni ku tiya ka xiphemu lexi hi ndlela yo biha.
4. Xirhendzevutani xa Angle
Ku vumba hi ku hisa swivumbeko, leswi fanaka na swivumbeko swa ntolovelo, swi lava angle yo karhi ya draft ku olovisa ku susa xivumbeko. Angle ya draft hi ntolovelo yisuka eka 1° kuya eka 4°. Draft angle leyintsongo yinga tirhisiwa eka ti mold ta xisati, tani hileswi kuhunguteka ka xiphemu xa plastiki swinyikaka clearance yin’wana yo engetelela, leswi endlaka leswaku ku demolding swi olova.
5. Dizayini ya Rib yo Tiyisa
Ti thermoformed plastic sheets hi ntolovelo ti tsindziyerile swinene, naswona endlelo ro vumba ri pimiwile hi draw ratio. Hikokwalaho, ku engetela timbanga to tiyisisa eka tindzhawu letinga tsana hi xivumbeko i ndlela ya nkoka yo engetela ku tiya na matimba. Ku vekiwa ka timbanga to tiyisisa swifanele ku tekeriwa enhlokweni hi vukheta ku papalata tindzhawu to olova swinene ehansi nale ka makhon’wa ya xiphemu.
Ku engetela kwalano, ku engetela ti grooves letinga e hansi, ti patterns kumbe swikoweto ehansi ka thermoformed shell swinga antswisa ku tiya naku seketela xivumbeko. Ti longitudinal shallow grooves ematlhelo ti engetela vertical rigidity, kasi transverse shallow grooves, hambi leswi ti engetelaka ku lwisana na ku wa, tinga endla leswaku demolding yitika swinene.
6. Ku Pfuxetiwa ka Swikumiwa
Switirhisiwa leswi endliweke hi ku hisa hi xitalo yikuma kuhunguteka lokukulu, laha kwalomu ka 50% wa swona swihumelelaka hinkarhi wa ku kufumela eka xivumbeko. Loko mahiselo ya mold yari e henhla, xiphemu xinga hunguteka hi 25% yo engetelela loko xiri karhi xi hola kuya eka mahiselo ya kamara endzhaku ka demolding, laha 25% leyinga sala ya shrinkage yinga humelela eka 24 wa tiawara leti landzelaka. Ku tlula kwalaho, switirhisiwa leswi vumbiweke hiku tirhisa ti mold ta xisati switala kuva na shrinkage rate ya 25% kuya eka 50% yale henhla kutlula leswi vumbiweke hi ti molds ta xinuna. Hikokwalaho, i swa nkoka swinene ku tekela enhlokweni ku hunguteka hi nkarhi wa endlelo ra dizayini ku tiyisisa leswaku swipimelo swo hetelela swi fikelela swilaveko swa ku pakanisa.
Hiku antswisa dizayini ya geometry, draw ratio, fillet radius, draft angle, reinforcement ribs, na shrinkage, khwalithi naku tshamiseka ka swiphemu swa plastiki leswi endliweke hi thermoformed swinga antswisiwa swinene. Swiphemu leswi swa dizayini ya phurosese swina nkucetelo wa nkoka eka vukorhokeri bya vuhumelerisi na matirhelo ya switirhisiwa leswi endliweke hi thermoformed naswona i xilotlelo xo tiyisisa leswaku swikumiwa swi fikelela swilaveko swa vatirhisi.