Tshuab moulding yog txheej txheem ntawm kev tsim lub raj molten (hu ua parison los yog preform) ntawm cov khoom siv thermoplastic (polymer los yog resin) thiab muab cov parison los yog preform nyob rau hauv lub pwm kab noj hniav thiab inflating lub raj nrog compressed cua, coj cov duab ntawm cov kab noj hniav thiab txias qhov ua ntej tshem tawm ntawm pwm.
Txhua qhov hollow thermoplastic tuaj yeem ua tshuab molded.
Cov khoom tsis yog tsuas yog txwv rau cov fwj xwb, qhov twg muaj ib qho qhib thiab nws feem ntau yog me me ntawm txoj kab uas hla lossis qhov loj dua qhov loj ntawm lub cev tag nrho. Cov no yog qee cov duab uas siv ntau tshaj plaws hauv cov neeg siv khoom ntim, txawm li cas los xij muaj lwm hom tshuab molded qhov chaw, suav nrog, tab sis tsis txwv rau:
- Industrial ntim ntim
- Cov nyom, vaj thiab cov khoom siv hauv tsev
- Cov khoom siv kho mob thiab qhov chaw, cov khoom ua si
- Tsev cov khoom lag luam
- Automotive-hauv qab hood qhov chaw
- Cov khoom siv hluav taws xob
Tshuab Moulding Manufacturing Txheej txheem
Muaj peb yam tseem ceeb ntawm tshuab moulding:
- Extrusion tshuab molding
- Txhaj tshuaj molding
- Txhaj stretch tshuab molding
Qhov sib txawv tseem ceeb ntawm lawv yog cov txheej txheem ntawm kev tsim lub parison; los ntawm extrusion lossis txhaj tshuaj molding, qhov loj ntawm parison thiab txoj kev txav ntawm parison thiab tshuab pwm; yog nyob ruaj ruaj, shuttling, linear los yog rotary.
Nyob rau hauv Extrusion Tshuab Moulding-(EBM) cov polymer yog yaj thiab cov khoom extruded yaj yog extruded los ntawm ib tug tuag los ua ib tug hollow raj los yog parison. Ob lub ntees ntawm cov pwm txias yog tom qab ntawd kaw ib ncig ntawm lub parison, lub zog cua yog nkag los ntawm tus pin los yog rab koob, inflating nws mus rau hauv cov duab ntawm pwm, yog li ua ib tug hollow ib feem. Tom qab cov yas kub tau txias txaus, cov pwm qhib thiab muab tshem tawm.
Hauv EBM muaj ob txoj hauv kev ntawm extrusion, Nruam thiab Nruam. Nyob rau hauv tas li ntawd, lub parison yog extruded tsis tu ncua thiab cov pwm txav mus thiab deb ntawm lub parison. Nyob rau hauv Intermittent, yas yog sau los ntawm lub extruder nyob rau hauv ib tug chamber, ces quab yuam los ntawm cov tuag los tsim lub parison. Cov pwm feem ntau nyob ruaj ruaj hauv qab lossis ib ncig ntawm lub extruder.
Piv txwv ntawm Cov Txheej Txheem Nruam yog Nruam Extrusion Shuttle machines thiab Rotary Wheel machines. Intermittent extrusion tshuab tuaj yeem yog Reciprocating Screw lossis Accumulator Head. Ntau yam yog txiav txim siab thaum xaiv ntawm cov txheej txheem thiab qhov loj lossis cov qauv muaj.
Piv txwv ntawm cov khoom ua los ntawm cov txheej txheem EBM suav nrog ntau yam khoom hollow, xws li lub raj mis, cov khoom lag luam, cov khoom ua si, tsheb, cov khoom siv thiab cov ntim khoom lag luam.
Raws li cov txheej txheem Txhaj Tshuaj Txhaum Tshuab - (IBS), cov txheej txheem polymer yog txhaj tshuaj molded rau hauv cov tub ntxhais hauv kab noj hniav los tsim ib lub raj hollow hu ua preform. Cov preforms tig rau ntawm tus pas nrig mus rau lub tshuab pwm los yog pwm ntawm lub tshuab tshuab kom inflated thiab txias. Cov txheej txheem no feem ntau yog siv los ua cov fwj me me, feem ntau 16oz / 500ml lossis tsawg dua ntawm cov khoom siv siab heev. Cov txheej txheem tau muab faib ua peb kauj ruam: txhaj tshuaj, tshuab thiab ejection, tag nrho ua tiav hauv lub tshuab ua ke. Cov khoom tuaj tawm nrog qhov tseeb tiav qhov ntev thiab muaj peev xwm tuav nruj kam rau ua-tsis muaj cov khoom siv ntxiv hauv kev tsim nws ua haujlwm tau zoo.
Piv txwv ntawm IBS qhov chaw yog cov tshuaj fwj, cov khoom siv kho mob, thiab cov khoom siv tshuaj pleev ib ce thiab lwm yam khoom siv.
Txhaj Stretch Tshuab Moulding- (ISBM) txheej txheem Txhaj Stretch Tshuab Molding- (ISBM) zoo ib yam li cov txheej txheem IBS tau piav qhia saum toj no, nyob rau hauv qhov preform yog txhaj molded. Lub molded preform yog ces nthuav tawm mus rau lub tshuab pwm nyob rau hauv ib tug conditioned lub xeev, tab sis ua ntej zaum kawg tshuab ntawm cov duab, lub preform yog stretched nyob rau hauv ntev thiab radially. Cov polymers raug siv yog PET thiab PP, uas muaj cov yam ntxwv ntawm lub cev uas tau txhim kho los ntawm kev ncab ib feem ntawm cov txheej txheem. Qhov kev ncab no ua rau qhov kawg txhim kho lub zog thiab thaiv cov khoom ntawm qhov hnyav dua thiab cov phab ntsa zoo dua li IBS lossis EBM - tab sis, tsis muaj qee qhov txwv xws li cov thawv ntim khoom, thiab lwm yam. ISBM tuaj yeem muab faib uaIb kauj ruamthiabOb Kauj Ruamtxheej txheem.
HauvIb kauj ruamtxheej txheem ob qho tib si preform manufacture thiab lub raj mis tshuab yog ua nyob rau hauv tib lub tshuab. Qhov no tuaj yeem ua tiav hauv 3 lossis 4 lub chaw nres tsheb, (Kev Txhaj Tshuaj, Kev Kho Mob, Tshuab thiab Ejection). Cov txheej txheem no thiab cov cuab yeej muaj feem cuam tshuam tuaj yeem ua rau me me mus rau siab ntim ntawm ntau yam duab thiab lub raj mis loj.
HauvOb Kauj Ruamtxheej txheem cov yas yog thawj molded rau hauv lub preform siv ib tug txhaj molding tshuab cais los ntawm lub tshuab moulder. Cov no yog tsim nrog lub caj dab ntawm lub raj mis, nrog rau cov xov ntawm qhov qhib kawg ntawm qhov kawg kaw hollow preform. Cov preforms no tau txias, khaws cia, thiab pub tom qab rau hauv lub tshuab ua kom sov dua lub tshuab moulding. Nyob rau hauv ob kauj ruam Reheat Blow txheej txheem, cov preforms yog rhuab (feem ntau yog siv infrared heaters) saum lawv cov iav hloov kub, ces stretched thiab tshuab siv high-pressure cua nyob rau hauv lub tshuab pwm.
Cov txheej txheem Ob Kauj Ruam yog tsim nyog rau cov ntim ntim ntau heev, 1 liter thiab qis dua, nrog rau kev siv cov khoom siv zoo heev, kev siv roj thiab lwm yam nta.