Lub rooj vag nyob rau hauv ib lub yas pwm yog ib tug luv luv, nqaim khiav txuas tus khiav thiab cov kab noj hniav, ua tus nkag rau resin txhaj rau hauv kab noj hniav. Cov duab, tus lej, qhov loj me, thiab qhov chaw ntawm lub rooj vag cuam tshuam rau qhov zoo ntawm cov yas. Yog li ntawd, xaiv lub rooj vag yog ib qho tseem ceeb ntawm cov yas pwm tsim. Hauv qab no qhia txog cov rooj vag los ntawm ntau yam.
I. Lub luag haujlwm tseem ceeb ntawm lub rooj vag:
1. Tom qab cov kab noj hniav puv lawm, cov yaj ua kom khov ua ntej ntawm lub rooj vag, tiv thaiv rov qab.
2. Ua kom yooj yim tshem tawm cov khoom siv ntawm lub rooj vag.
3. Rau ntau-kab kab noj hniav pwm, nws tswj qhov chaw ntawm weld kab.
II. Hom rooj vag
Cov rooj vag feem ntau muab faib ua ob hom: cov rooj vag tsis txwv thiab cov rooj vag txwv. Cov rooj vag txwv tau muab faib ua peb ntu: sab rooj vag, taw tes rooj vag, thiab disc nplhaib rooj vag.
2.1 Cov rooj vag tsis txwv
Cov rooj vag tsis txwv kuj tseem hu ua cov rooj vag ncaj qha (raws li qhia hauv daim duab 1). Nws cov yam ntxwv muaj xws li ncaj qha ntws ntawm molten yas rau hauv pwm kab noj hniav, tsis tshua muaj siab poob, ceev ceev ceev, thiab yooj yim molding, ua rau nws haum rau ntau yam yas. Nws muaj qhov zoo xws li kev sib kis zoo, muaj zog tuav thiab shrinkage them, yooj yim thiab compact pwm qauv, thiab kev tsim khoom yooj yim. Txawm li cas los xij, qhov kev tshem tawm ntawm lub rooj vag yog qhov nyuaj, thiab cov cim rooj vag yog qhov pom tseeb; Thaum tshav kub kub concentration nyob ze ntawm lub rooj vag ua rau qeeb solidification, yooj yim generating loj nyob rau hauv cov kev ntxhov siab thiab ua rau shrinkage pits los yog nto concavity. Nws yog qhov tsim nyog rau cov khoom yas loj thiab tuab- cov khoom siv yas.
Daim duab 1: Direct Gate Type
2.2 Kev txwv qhov rooj
Cov kab noj hniav pwm thiab cov neeg khiav dej num txuas nrog cov channel nrog qhov luv luv ntawm ib kawg thiab tus ntoo khaub lig me me -section. Cov channel no yog hu ua lub rooj vag txwv, uas tuaj yeem txwv lub rooj vag tuab thiab ceev ceev. Lub hom phiaj tseem ceeb ntawm cov rooj vag txwv yog:
2.2.1 Point Rooj vag
Lub rooj vag taw tes yog lub rooj vag uas muaj tus ntoo khaub lig me me heev -sectional dimension (raws li qhia hauv daim duab 2).
Cov yam ntxwv ntawm cov rooj vag point yog:
1. Kev txwv tsawg dua ntawm qhov chaw ntawm lub rooj vag;
2. Yam tsawg kawg nkaus tom qab tshem tawm lub rooj vag, tsis cuam tshuam rau qhov pom ntawm cov yas;
3. Lub rooj vag tuaj yeem txiav tawm thaum lub sijhawm qhib pwm, ua kom yooj yim rau kev ua haujlwm;
4. Kev ntxhov siab tsawg dua los ntawm cov khoom siv ntxiv los ntawm cov khoom siv ntawm lub rooj vag.
Qhov tsis zoo yog:
1. Kev poob siab ntau dua; cov pwm yuav tsum siv peb- phaj pwm qauv, uas ua rau cov pwm txheej txheem nyuaj thiab yuav tsum tau ua raws li cov txheej txheem sib cais. Nws tuaj yeem siv tau rau ob - phaj pwm qauv yam tsis muaj kev sib tw.
Daim duab 2. Hom Point Gates
2.2.2 Submerged Gates
Cov rooj vag submerged tau hloov zuj zus los ntawm cov rooj vag taw tes. Lawv cov neeg khiav dej num nyob rau ntawm qhov chaw sib cais, thiab lub rooj vag yog submerged hauv qab ntawm qhov chaw sib cais, nkag mus rau hauv kab noj hniav ntawm lub kaum sab xis. Dhau li muaj cov yam ntxwv ntawm cov rooj vag taw tes, cov rooj vag submerged feem ntau nyob rau sab hauv lossis sab ntawm cov yas, yog li tsis cuam tshuam rau nws cov tsos. Cov khoom yas thiab cov neeg khiav dej num tau nruab nrog ejection mechanisms, txiav tawm ntawm lub rooj vag thaum lub pwm qhib, thiab cov khoom ruaj khov nyob rau hauv tus khiav yuav poob tawm.
Daim duab 3. Sab nrauv Submerged Gate
Daim duab 4. Internal Submerged Gate
2.2.3 Sab Rooj vag
Sab rooj vag, tseem hu ua ntug rooj vag, feem ntau yog nyob rau ntawm qhov chaw parting, nkag los ntawm sab nraud ntawm cov kab noj hniav (yas ib feem) (raws li qhia hauv daim duab 5). Sab rooj vag feem ntau yog cov duab plaub sib npaug - cov rooj vag ntu, tso cai rau kev hloov kho yooj yim ntawm tus nqi shear thaum lub sij hawm pwm filling thiab lub rooj vag kaw lub sij hawm; yog li ntawd, lawv kuj raug hu ua standard rooj vag. Sab rooj vag yog tus yam ntxwv ntawm lawv cov ntoo khaub lig yooj yim -sectional shape, yooj yim ntawm machining, thiab precision machining peev xwm. Lawv muab cov rooj vag hloov tau yooj yim rau kev txhim kho pwm filling. Kev kho tuaj yeem ua tsis tau tshem cov pwm los ntawm kev txhaj tshuaj molding tshuab. Kev tshem tawm rooj vag yog yooj yim thiab tawm tsawg kawg ib kab. Sab rooj vag tshwj xeeb yog tsim rau ob-phaj ntau- kab noj hniav pwm. Txawm li cas los xij, lawv muaj feem cuam tshuam rau cov kab txuas, cov qhov tseem ceeb, thiab kev nyuaj siab hauv cov pwm pwm, ua rau muaj qhov tseem ceeb ntawm kev txhaj tshuaj tsis zoo thiab qhov tsis zoo rau lub plhaub - zoo li qhov chaw.
Daim duab 5: Cov Hom Phiaj Ntawm Sab Rooj Vag
2.2.4 Overlapping Rooj vag
Cov rooj vag sib tshooj, tseem hu ua lapped rooj vag, yog qhov tseem ceeb zoo ib yam li cov rooj vag sab, tab sis lub rooj vag tsis nyob ntawm sab ntawm kab noj hniav, tab sis ntawm ib sab ntawm kab noj hniav (raws li qhia hauv daim duab 6). Lawv yog cov feem cuam tshuam rooj vag, zoo tiv thaiv lub jetting ntws ntawm molten yas. Txawm li cas los xij, cov txheej txheem molding tsis raug tuaj yeem ua rau cov pits ntawm lub qhov rooj. Tshem tawm lub rooj vag yog qhov nyuaj thiab tawm qhov pom ntawm lub qhov rooj ntawm qhov chaw molded.
Daim duab 8. Hom kev sib tshooj ntawm lub rooj vag
2.2.5 Ntxuam-Zoo li rooj vag
Lub kiv cua- zoo li lub rooj vag yog ib lub qhov rooj nthuav dav, qhov sib txawv ntawm lub rooj vag sab, feem ntau siv los pwm dav, daim ntawv- zoo li cov khoom yas (raws li hauv daim duab 7). Lub rooj vag maj mam nthuav dav raws li kev coj noj coj ua, thiab nws cov thickness maj mam txo mus rau nws qhov chaw thinnest. Cov yas molten yog tusyees faib nyob rau hauv dav kev taw qhia, txo cov kev ntxhov siab nyob rau hauv cov yas ib feem thiab minimizing warpage; nws kuj muab cov kab noj hniav zoo thiab tsis txhob muaj cua nkag. Txawm li cas los xij, kev tshem tawm lub rooj vag yog qhov nyuaj, ua rau pom cov cim.
2.2.6 Flat Slit Gate
Kuj tseem hu ua daim ntawv rooj vag, qhov no yog lwm qhov kev hloov pauv ntawm lub rooj vag sab, feem ntau siv los pwm loj, tiaj tus yas (raws li qhia hauv daim duab 8). Lub rooj vag txoj kev faib tawm yog sib npaug mus rau sab ntawm kab noj hniav, hu ua parallel khiav, nws qhov ntev tuaj yeem siab dua lossis sib npaug ntawm qhov dav ntawm cov yas. Cov yas molten yog thawj zaug sib npaug sib npaug ntawm cov neeg sib tw khiav, tom qab ntawd ntws mus rau qhov sib npaug ntawm qhov qis tshaj tawm, sib npaug nkag mus rau hauv kab noj hniav. Yog li ntawd, qhov kev ntxhov siab sab hauv hauv cov yas yog qhov tsawg, txo qhov kev ua tsov rog los ntawm kev ntxhov siab, thiab cov kab noj hniav yog qhov zoo. Txawm li cas los xij, kev tshem tawm lub rooj vag yog kev siv zog- hnyav thiab ua rau pom cov cim.
2.2.7 Disc Rooj vag
Cov rooj vag disc yog siv rau cov khoom yas cylindrical nrog qhov loj hauv lub qhov, lossis cov khoom yas nrog cov square puab qhov loj (raws li qhia hauv daim duab 9). Lub rooj vag yog nyob ib ncig ntawm tag nrho cov perimeter ntawm lub puab qhov. Cov yas molten nkag mus rau hauv cov kab noj hniav los ntawm qhov ib puag ncig ntawm lub qhov sab hauv ntawm kwv yees li tib lub nrawm, tiv thaiv cov kab hlau los ntawm kev sib sau ntawm cov yas, kom ntseeg tau tias muaj kev ntxhov siab nyob rau hauv cov tub ntxhais, thiab tso cua kom khiav tawm mus ib ntus. Disc rooj vag tsis tshua siv rau peb cov khoom.
Daim duab 7 Daim ntawv yooj yim ntawm kiv cua- zoo li lub rooj vag
Daim duab 8 Daim ntawv yooj yim ntawm lub tiaj tus- lub rooj vag
Daim duab 9 Basic daim ntawv ntawm lub rooj vag disc
2.2.8 Lub rooj vag
Cov rooj vag vaj huam sib luag nyob rau sab nraud ntawm lub cylindrical kab noj hniav, concentric nrog nws. Yog li ntawd, lawv raug hu ua lub rooj vag sab nraud, thiab lawv lub rooj vag txoj hauj lwm sib raug raws nraim rau lub rooj vag disc sab hauv (raws li qhia hauv daim duab 10). Haum rau nyias -walled, ntev tubular yas qhov chaw. Vim tias cov yas molten nkag mus rau hauv cov kab noj hniav sib npaug ib ncig ntawm lub hauv paus, lub filling yog uniform, venting yog zoo, thiab tsis muaj weld kab ntawm ib feem. Txawm li cas los xij, tshem tawm lub rooj vag yog qhov nyuaj, thiab pom tseeb lub rooj vag cov cim raug tso rau sab nraud ntawm qhov chaw. Cov rooj vag vaj huam sib luag feem ntau yog siv me me, ntau- kab noj hniav pwm.
Daim duab 10: Daim ntawv yooj yim ntawm lub rooj vag ncig
2.2.9 Hais rooj vag thiab claw rooj vag
Lub rooj vag hais lus muaj cov ntawv thov zoo sib xws rau lub rooj vag disc, thiab tseem tsim nyog rau cov khoom yas nrog cov duab plaub sab hauv. Nws hloov tag nrho perimeter pub rau hauv ob peb lub me me arc lossis ncaj pub ntu, yog li nws tuaj yeem suav tias yog lub rooj vag sab hauv. Hom lub rooj vag no yooj yim tshem tawm, muaj cov khoom siv tsis tshua muaj zog hauv cov neeg khiav dej num, thiab sab sauv ntawm cov tub ntxhais yog qhov chaw, ua rau kom muaj kev ruaj ntseg ntawm cov tub ntxhais. Txawm li cas los xij, cov kab txuas ntawm qhov cuam tshuam rau nws lub zog thiab qhov zoo ntawm qhov zoo (raws li pom hauv daim duab 11).
Lub rooj vag claw yog qhov hloov pauv ntawm lub rooj vag hais lus, nrog tus khiav ntawm tus ntoo khaub lig tapered - seem ntawm cov tub ntxhais. Nws yog tsuas yog siv rau ntev tubular yas qhov chaw nrog me me puab qhov los yog yas qhov chaw nrog siab coaxiality yuav tsum tau.
Daim duab 11. Cov Hom Phiaj ntawm Kev Hais Lus-Hom thiab Claw- Hom Rooj Vag
III. Qhov Chaw Xaiv Qhov Chaw
Qhov chaw thiab tus naj npawb ntawm cov rooj vag feem ntau txiav txim siab qhov tsos zoo thiab kev ua haujlwm ntawm cov khoom. Yog li, cov ntsiab lus hauv qab no yuav tsum tau txiav txim siab thaum xaiv lub rooj vag qhov chaw thiab tus lej:
1. Lub rooj vag yuav tsum nyob rau hauv ib txoj hauj lwm uas tso cai rau tag nrho cov ces kaum ntawm cov kab noj hniav kom puv ib txhij.
2. Cov yas txhaj rau hauv cov kab noj hniav yuav tsum muaj qhov sib npaug thiab ruaj khov ntawm txhua theem ntawm cov txheej txheem txhaj tshuaj molding.
3. Lub rooj vag yuav tsum nyob rau hauv lub thicker ib feem ntawm cov khoom phab ntsa, tso cai rau cov yaj mus ntws los ntawm cov tuab seem mus rau nyias seem, ua kom yooj yim rau cov khoom siv ntxiv thiab ua kom tiav pwm filling.
4. Qhov chaw ntawm lub rooj vag yuav tsum tau xaiv kom txo tau txoj kev ntim cov yas thiab txo qhov poob siab.
5. Qhov chaw ntawm lub rooj vag yuav tsum raug xaiv los pab kom tshem tawm cov pa tawm ntawm cov pwm kab noj hniav;
6. Lub rooj vag yuav tsum tsis txhob cia cov khoom molten ntws ncaj qha mus rau hauv cov pwm kab noj hniav, txwv tsis pub nws yuav tsim swirls, tawm hauv swirling cov cim rau ntawm cov yas, tshwj xeeb tshaj yog cov rooj vag nqaim yuav ua rau qhov tsis xws luag;
7. Muaj peev xwm weld kab, npuas, kev nyuaj siab, voids, tsis txaus txhaj tshuaj, thiab sprue yuav tsum tau txiav txim siab;
8. Qhov chaw ntawm lub qhov rooj yuav tsum raug xaiv kom tsis txhob muaj cov kab sib txuas ntawm qhov chaw ntawm qhov chaw. Thaum weld kab tsis tuaj yeem zam tau, qhov chaw ntawm qhov rooj yuav tsum raug xaiv los txiav txim siab seb qhov chaw ntawm cov kab weld puas tsim nyog;
9. Qhov chaw ntawm lub rooj vag yuav tsum tiv thaiv kev tsim cov kab seam ntawm cov yas nto, tshwj xeeb tshaj yog nyob rau hauv cov nplhaib lossis cov yas cylindrical. Lub qhov dej txias yuav tsum tau muab ntxiv rau ntawm cov khoom sib txuas ntawm lub qhov rooj ntawm lub ntsej muag;
10. Lub rooj vag tsim yuav tsum tsis txhob ua kom tawg tawg.
11. Thaum cov khoom qhov projected cheeb tsam loj, tsis txhob qhib lub rooj vag ntawm ib sab kom tsis txhob muaj kev ntxhov siab tsis sib xws.
12. Lub rooj vag yuav tsum nyob rau hauv txoj hauj lwm uas tsis cuam tshuam rau qhov zoo ntawm cov khoom.
13. Tsis txhob tso lub rooj vag rau hauv qhov chaw ntawm cov khoom uas yuav dais dabtsi yog khoov lossis cuam tshuam. Feem ntau, lub zog nyob ze ntawm lub rooj vag yog qhov tsis muaj zog tshaj plaws.
14. Rau kev txhaj tshuaj pwm nrog cov cores slender, lub rooj vag txoj hauj lwm yuav tsum nyob deb ntawm cov tub ntxhais kom tiv thaiv cov tub ntxhais los ntawm deformed los ntawm cov khoom ntws.
15. Thaum molding cov yas loj lossis tiaj tus, ob lub rooj vag tuaj yeem siv los tiv thaiv kev sib tsoo, deformation, thiab cov khoom tsis txaus.
16. Lub qhov rooj tshem tawm kev ua haujlwm yuav tsum tau ua kom yooj yim li sai tau, nyiam dua automated.
IV. Gating Hom thiab Plastic Matching
Cov ntaub ntawv yas sib txawv yuav tsum muaj ntau hom kev sib txawv. Cov lus hauv qab no qhia txog hom rooj vag nyiam rau cov khoom sib txawv:
﹀
﹀
V. Feem ntau siv Gating hom hauv peb qhov ntau lawm
Hauv peb qhov kev tsim khoom, peb siv hom gating hauv qab no raws li cov qauv khoom, cov kev xav tau zoo, thiab kev xav tau automation:
1. Qhov rooj ncaj nraim
Hauv cov thawv ntim khoom siv feem ntau, vim lawv qhov loj me ntawm cov qauv thiab tsis muaj qhov tshwj xeeb yuav tsum tau ua kom pom qhov rooj, peb siv qhov rooj ncaj nraim, uas muaj cov qauv yooj yim thiab yooj yim rau txheej txheem. Txawm li cas los xij, tshem tawm cov khoom siv tes yog qhov nyuaj. Raws li pom hauv daim duab 12:
Daim duab 12 Piv txwv ntawm daim ntawv thov qhov rooj ncaj qha (turnover box)
2. Sab rooj vag
Hauv peb cov khoom, qee qhov pob tshab, xws li TZ-C1041, TZ-C1051, thiab T-C1061 lo ntsiab muag, siv lub qhov rooj sab nraud (raws li qhia hauv daim duab 13) vim tias lub rooj vag txoj haujlwm tsis raug tso cai rau sab xub ntiag lossis sab nraub qaum. Txawm li cas los xij, qhov no tsis tuaj yeem ua tau raws li qhov yuav tsum tau ua ntawm kev tsim khoom siv hluav taws xob thiab phau ntawv txiav cov khoom yuav tsum tau ua.
Daim duab 13 Piv txwv ntawm daim ntawv thov rooj vag sab: rooj vag txoj hauj lwm
3. Lub rooj vag submerged
Submerged rooj vag yog hom rooj vag uas siv ntau tshaj plaws hauv peb cov pwm txhaj tshuaj. Feem ntau ntawm peb qhov chaw ua haujlwm, hloov kho thav duab, thiab lwm yam, siv lub qhov rooj submerged nrog lub rooj vag sab nraud, raws li pom hauv daim duab 14, thaum cov khoom siv feem ntau siv cov khoom siv submerged nrog lub rooj vag rau sab hauv, raws li qhia hauv daim duab 15. Lub rooj vag hom no tso cai rau cov khoom siv tsis siv neeg tawm, ntsib cov khoom siv automation, thiab tawm ntawm cov khoom tsis zoo.
Cov rooj vag feem ntau siv hauv peb cov khoom yog cov uas tau hais los saum no. Txawm li cas los xij, nyob ntawm cov khoom yuav tsum tau muaj, kuj tseem muaj qee qhov tshwj xeeb ntawm cov rooj vag siv, xws li crescent -zoo li lub rooj vag hauv TZ-CON01 sab sauv thiab qis plhaub pwm (raws li qhia hauv daim duab 16). Feem ntau hais lus, thaum txiav txim siab hom rooj vag rau pwm, txhua yam ntawm cov kev xav tau yuav tsum tau txiav txim siab tag nrho. Ib qho pwm tuaj yeem siv ib hom rooj vag lossis kev sib txuas ntawm cov rooj vag sib txawv (piv txwv li, TZ-CON01 sab sauv thiab sab hauv plhaub pwm muaj ob qho tib si crescent- lub rooj vag thiab lub rooj vag sab nraud submarine, raws li pom hauv daim duab 17), nrog rau lub hom phiaj ntawm kev tsim cov khoom tsim nyog.
