Lub tswv yim, tseem hu ua luv luv, kev txhaj tshuaj tsis txaus, thiab seem tsis txaus, feem ntau hu ua kev nkag siabkev txhaj tshuaj, uas hais txog qhov tsis txaus ntseeg ib nrab ntawm qhov kawg ntawm cov khoom ntws lossis ib nrab tsis txaus siab nyob rau hauv ib qho pwm thiab ntau kab noj hniav, tshwj xeeb tshaj yog thaum kawg ntawm daim nyias nyias thaj tsam lossis ntws kev. Nws qhia tau tias cov yaj tau txau yog tsis muaj qhov ua kom tiav cov kab noj hniav, thiab cov yaj tsis tau tag nrho tom qab nkag mus rau hauv kab noj hniav, uas ua rau cov khoom tsis txaus.
Qhov laj thawj ntawm kev txhaj tshuaj luv yog tias qhov ntws tawm tsam yog qhov loj heev, uas ua rau cov yaj tsis tuaj yeem ntws mus ntxiv. Yam cuam tshuam rau yaj yaj ntev xws li: phab ntsa tuab ntawm qhov chaw, pwm kub, txhaj tshuaj siab, yaj kub thiab cov khoom qhia. Yog tias cov laj thawj no tsis tau ua kom zoo, lawv yuav ua rau cov ntawv luv.
1. Cov khoom siv tsis zoo xaiv
Thaum xaiv cov khoom siv, qhov siab tshaj plaws qhov kev txhaj tshuaj ntawm lub tshuab txhaj tshuaj yuav tsum yog qhov hnyav tshaj qhov hnyav ntawm qhov yas thiab nozzle, thiab qhov hnyav txhaj tsis tas yuav tsum ntau tshaj li 85% ntawm cov khoom siv txhaj tshuaj ntawm lub tshuab txhaj tshuaj.
2. Cov khoom siv tsis txaus
Ntawm nimno, txoj kev nquag siv los tswj kev pub mis yog qhov tsis tu ncua ntim pub, seb yob ntau npaum li cas nrog cov txiv hmab txiv ntoo ntawm cov khoom siv raw, thiab seb puas muaj" bridging" tshwm sim rau hauv qab ntawm chaw nres nkoj pub khoom noj. Yog tias qhov ntsuas kub ntawm qhov chaw nres nkoj pub ntau dhau, nws tseem yuav ua rau tsis muaj qhov tsis xwm yeem. Yog li ntawd, chaw thau khoom noj yuav tsum tau muab txiav kom txias thiab txias.
3. Tsis zoo fluidity ntawm cov ntaub ntawv
Thaum cov npliag ntawm raw cov ntaub ntawv tsis zoo, cov yam ntxwv ntawm kev tuag yog qhov laj thawj tseem ceeb uas cuam tshuam rau qhov kev txhaj tshuaj hauv qab. Yog li ntawd, qhov tsis xws luag ntawm cov txheej txheem pwm kev tiv thaiv yuav tsum tau ua kom zoo dua, xws li teeb tsa tus khiav txoj haujlwm tsim nyog, nce qhov loj ntawm lub rooj vag, khiav thiab tawg, thiab siv lub qhov loj dua. Nyob rau tib lub sijhawm, tus nqi tsim nyog ntawm kev tuaj yeem tuaj yeem muab ntxiv rau cov khoom noj kom zoo dua qub kom txhim kho cov npliag ntawm cov khoom ntoo. Ntxiv rau, peb yuav tsum txheeb xyuas seb cov khoom siv xa rov qab rau hauv cov khoom siv puas yog ntau dhau, thiab puas tsim nyog txo lawv kev noj.
4. Cov roj nplua nyeem ntau dhau
Yog tias muaj cov roj nyeem ntau dhau rau hauv cov khoom siv raw, thiab qhov hnav tsis sib haum ntawm lub nplhaib uas tsis rov qab los ntawm cov ntsia hlau tua thiab lub thoob yog qhov loj, qhov teeb meem loj rov qab ntawm cov yaj nyob hauv cov roj yuav ua rau tsis txaus thiab tsis txaus ntseeg. Yog li, nws tsim nyog los txo cov roj nplua nyeem, kho qhov sib txawv nruab nrab ntawm lub tsub tsub them tawm thiab tua ntsia hlau thiab kos lub nplhaib, thiab kho cov cuab yeej siv.
5. Cov khoom ua kom txias impurities thaiv lub feed channel
Thaum impurities hauv melt block nozzles lossis cov ntaub ntawv txias thaiv lub rooj vag thiab cov neeg sib tw [/ li] [li], cov kab thaiv yuav tsum tau muab tais los ntxuav los yog nthuav dav rau cov ntu ntawm kab noj txias thiab cov neeg sib tw khiav.
6. Qhov tsim qauv ntawm kev tso poj niam tsis tsim nyog
Thaum ib lub pwm muaj ntau cov kab noj hniav, qhov tsis tsim nyog kev sib txig tsim ntawm lub rooj vag thiab khiav feem ntau ua rau pom qhov tsis xws ntawm cov yas. Thaum tsim lub kaw lus gating, mloog yuav tsum tau them rau lub rooj vag sib npaug, qhov hnyav ntawm qhov chaw yas hauv txhua kab noj hniav yuav tsum muaj qhov sib npaug ntawm lub rooj vag loj, kom txhua kab noj hniav tuaj yeem ntim rau tib lub sijhawm, thiab lub rooj vag qhov chaw yuav tsum tau xaiv ntawm cov phab ntsa tuab, lossis cov qauv tsim ntawm cov txheej txheem sib luag ntawm cov chaw shunt tuaj yeem saws.
Yog tias lub rooj vag lossis khiav yog me me, nyias thiab ntev, lub siab ntawm cov yaj yuav ploj mus raws li cov txheej txheem ntws, thiab cov ntws yuav raug kaw, uas yuav yooj yim ua rau kev txhaws tsis zoo. Yog li ntawd, cov kem khiav ntawm lub qhov rooj thiab lub rooj vag yuav tsum ua kom dav, thiab ntau txoj hauv kev pub mis tuaj yeem siv tau yog tsim nyog.
7. Cov pa phem tsis zoo ntawm cov pwm
Thaum cov roj tawm hauv cov pwm ntau vim qhov cov pa hluav taws xob tsis zoo yog txau los ntawm cov khoom ntws, uas ua rau lub siab qhov siab dua qhov txhaj tshuaj siab, nws yuav tiv thaiv cov yaj kom puv pwm pwm thiab ua kom tsis muaj teeb meem. Hauv qhov no, nws yuav tsum kuaj xyuas seb puas muaj cov khoom noj txias lossis qhov chaw ua haujlwm nws puas yog. Rau lub pwm nrog cov kab noj hniav sib sib zog nqus, qhov tso pa tawm sab nraud los yog lub qhov tso pa yuav tsum tau ntxiv ntawm qhov chaw txhaj tshuaj; Kev tshem tawm cov roj khov kho nrog qhov tob ntawm 0.02 ~ 0.04mm thiab qhov dav ntawm 5 ~ 10mm tuaj yeem qhib rau ntawm lub pwm clamping nto, thiab lub qhov tso pa tawm yuav tsum teeb tsa thaum kawg pwm txhawm rau txoj haujlwm ntawm kab noj hniav.
Thaum siv cov ntaub ntawv raw nrog ntau noo noo thiab cov teeb meem tsis haum cov ntsiab lus, cov pa roj ntau yuav tsim tawm, uas yuav ua rau cov pa tsis zoo ntawm cov pwm. Nyob rau lub sijhawm no, cov khoom siv raw yuav tsum tau muab ziab thiab ua kom tsis txaus siab yuav tsum tau muab tshem tawm.
Tsis tas li ntawd, nyob rau hauv cov txheej txheem kev khiav haujlwm ntawm cov pwm txheej txheem, cov kis kab mob tuaj yeem txhim kho los ntawm kev nce lub pwm kub, txo qis kev txhaj tshuaj, txo kev pab cuam ntws ntawm qhov kev sib tsoo, txo cov clamping quab yuam thiab nce pwm qhov sib txawv.
8. Cov pwm kub los qis heev
Tom qab nkag mus rau hauv qhov kub thiab txias pwm kab noj hniav, cov yaj yuav txias kom dhau sai kom puv txhua lub kaum pob ntawm cov pwm kab noj hniav. Yog li ntawd, pwm yuav tsum tau preheated rau qhov kub uas yuav tsum tau ua los ntawm cov txheej txheem ua ntej pib. Thaum pib ua, qhov ntau npaum li cas ntawm cov dej txias hauv lub pwm yuav tsum tswj kom zoo. Yog tias pwm pwm kub tsis tuaj yeem nce siab, xyuas seb tus qauv pwm puas txias tsim nyog.
9. Lub siab sov tuaj yeem ua haujlwm tsawg dhau
Feem ntau, nyob rau hauv cov ntau tsim nyog rau kev txhaj tshuaj molding, kev sib raug zoo ntawm cov khoom kub thiab pwm puv qhov ntev yog ze rau cov txiaj ntsig zoo, thiab qhov npliag ntawm qhov kub-yaj yaj tsawg dua, uas ua kom luv luv ntawm pwm txhaws ntev. Thaum cov khoom siv ntsuas qhov kub qis dua qhov ntsuas kub uas xav tau los ntawm cov txheej txheem, xyuas seb cov khoom siv cov khoom noj khoom haus puas nyob rau qhov zoo thiab sim ua kom nce cov khoom siv qhov kub thiab txias. Thaum pib nce, qhov kub ntawm lub thawv them nyiaj yog ib txwm qis dua qhov uas tau qhia los ntawm cov ntsuas ntawm tus nqi them roj teeb hluav taws xob. Nws yuav tsum raug sau tseg tias nws yuav siv sijhawm pib los pib tom qab tso cua sov lub thawv rau lub ntsuas kub.
Yog tias kev txhaj tshuaj ntawm qhov kub tsawg yuav tsum tau ua kom tiv thaiv kev yaj tag, lub sijhawm txhaj rau lub sijhawm tuaj yeem txuas ntxiv rau qhov zoo kom dhau qhov kev txhaj tshuaj. Rau cov ntsia hlau txhaj tshuaj tshuab, qhov kub ntawm seem ua ntej ntawm lub thoob tuaj yeem tsim nyog ntxiv.
10. lub nozzle kub tsawg heev
Thaum lub sijhawm txheej txheem txhaj, lub nozzle nyob rau hauv kev sib cuag nrog pwm. Vim tias pwm kub feem ntau qis dua li ntawm lub nozzle thiab qhov kub sib txawv yog qhov loj, lub nozzle kub yuav poob tom qab sib tiv tauj tas li ntawm ob, uas ua rau khov ntawm yaj ntawm lub nozzle.
Yog tias tsis muaj cov khoom siv hauv cov pwm txias hauv cov qauv pwm, cov khoom siv txias yuav ua kom muaj zog tam sim ntawd tom qab nkag mus rau hauv cov pwm kab noj hniav, kom kub yaj hauv qab ntsaws tsis tuaj yeem sau cov pwm kab noj hniav. Yog li no, lub nozzle yuav tsum sib cais los ntawm cov pwm thaum qhib lub pwm, yog li kom txo tau cov cawv ntawm cov pwm ntawm qhov kub thiab txias nozzle thiab ua kom qhov kub ntawm lub nozzle tsis pub dhau ntawm cov txheej txheem cov cai.
Yog tias lub nozzle kub tsawg heev thiab tsis tuaj yeem sawv, xyuas seb lub tshuab hluav taws xob tsis muaj qhov cub puas lawm, thiab sim ua kom lub teeb taws tsis muaj zog, txwv tsis pub, ntau dhau lub siab poob ntawm cov khoom ntws yuav ua rau qis-txhaj.
11. Kev txhaj tshuaj tsis haum lossis tuav siab tsis txaus
Cov kev sib raug zoo ntawm kev txhaj tshuaj siab thiab pwm puv qhov ntev yog ze rau qhov feem ncaj ncaj. Kev txhaj tshuaj siab yog qhov tsawg heev, qhov pwm puv ntev yog luv, thiab kab noj hniav tsis puv txaus. Yog li, cov kev txhaj tshuaj tuaj yeem nce los ntawm kev txhaj tshuaj tsawg dua thiab ua kom ntev li lub sijhawm txhaj tshuaj kom haum. Yog tias lub siab txhaj tshuaj tsis tuaj yeem ua rau nce ntxiv, nws tuaj yeem tsim kho los ntawm kev nce qhov kub ntawm cov yaj, txo qhov viscosity ntawm yaj thiab txhim kho fluidity ntawm yaj. Nws yog tsim nyog sau cia tias yog cov khoom siv ntsuas kub dhau, cov yaj yuav raug txiav tawm hauv cov ntawv, uas yuav cuam tshuam rau kev ua haujlwm ntawm cov yas.
Tsis tas li ntawd, yog tias tuav lub sijhawm tsis ntev dhau, nws tseem yuav ua rau lub ntim tsis txaus. Yog li, lub sijhawm tuav yuav tsum tswj nyob rau hauv qhov tsim nyog, tab sis nws yuav tsum nco ntsoov tias lub sijhawm tuav lub sijhawm ntev dhau lawm tseem yuav ua rau lwm qhov yuam kev, uas yuav tsum tau kho raws li cov kev cai tshwj xeeb ntawm cov khoom yas thaum lub sijhawm molding.
12. Qhov kev txhaj tshuaj nrawm nrawm dhau
Kev txhaj tshuaj nrawm nrawm ncaj qha ntsig txog pwm txhaj ceev. Yog tias kev txhaj tshuaj nrawm dhau qeeb, lub melt sau yuav qeeb, thaum lub hli ntws ntawm lub nrawm yuav ua kom yooj yim txias, uas yuav txo nws cov kev ua haujlwm txaus thiab ua rau underfilling.
Yog li, cov kev txhaj tshuaj nrawm yuav tsum nce ntxiv hauv qhov tsim nyog. Txawm li cas los xij, nws yuav tsum raug sau tseg tias yog tias qhov kev txhaj tshuaj nrawm nrawm, nws yog ib qho yooj yim uas ua rau lwm cov kev txhaj tshuaj moulding.
13. Tus qauv kev tsim ntawm sab hauv cov yas yog tsis tsim nyog
Thaum cov tuab thiab ntev ntawm cov ntu ntawm cov yas tawm ntawm qhov feem sib faib, cov duab yog qhov nyuaj heev thiab thaj chaw molding yog qhov loj heev, cov ntws ntawm cov yaj tau yooj yim thaiv ntawm qhov nkag ntawm nyias-walled qhov chaw ntawm cov yas, uas ua rau nws tsis yooj yim sau cov kab noj hniav. Yog li no, thaum tsim tus qauv ntawm lub cev ntawm cov khoom siv ntawm cov yas, yuav tsum tau them rau qhov kev sib raug zoo ntawm cov tuab ntawm cov khoom seem yas thiab cov kev txwv tsis pub ntev ntawm yaj ntsaws.
Hauv kev txhaj tshuaj molding, cov tuab ntawm seem yas yog 1 ~ 3 hli ntawm feem ntau, thiab hais tias ntawm cov yas loj yog 3 ~ 6 hli. Cov lus pom zoo tuab tsawg yog: 0.5 hli polyethylene, 0.7 hli cellulose acetate thiab cellulose acetate butyrate yas, 0.9mm ethyl cellulose yas, 0.7 hli polymethylmethacrylate, 0.7mm polyamide, 0.75mm polystyrene thiab 2.3mm polyvinyl chloride. Feem ntau, cov tuab ntawm cov khoom yas tshaj li 8mm lossis tsawg dua 0.5 hli tsis zoo rau kev txhaj tshuaj molding, thiab cov tuab zoo li no yuav tsum zam hauv kev tsim.
Ntxiv mus, thaum tsim cov txheej txheem yas ntu nrog cov duab ua cov nyom, tsim nyog ntsuas yuav tsum ua nyob rau hauv cov txheej txheem, xws li txiav txim siab qhov chaw ntawm lub rooj vag, tsim kho kom haum rau qhov chaw khiav, nce kev txhaj tshuaj ceev lossis txais kev txhaj tshuaj sai. Txhim kho cov pwm kub lossis xaiv cov roj av kom zoo dua.
