Yuav ua li cas xaiv cov specification qauv ntawm txhaj tshuaj molding tshuab?
Thaum xaiv qhov luaj li cas ntawm cov tshuaj molding tshuab, thawj qhov khoom xyuas yog qhov tsis zoo ntawm kev txhaj tshuaj molding tshuab hauv cov khoom specifications muab los ntawm kev txhaj molding tshuab chaw tsim tshuaj.These tsis nqi qhia tias cov yam ntxwv ntawm kev txhaj molding tshuab, tus neeg siv tau raws li qhov yuav tsum tau tsim cov khoom yas ー tej yam kev cai (xws li cov khoom siv nrog cov khoom raw, cov khoom zoo, qhov loj thiab cov qauv ua qhov siab qhov tuag, thiab lwm yam) kom paub cov cuab yeej ntawm cov khoom, thiab nyob ze rau cov kev ntsuas ntawm qhov kev txhaj tshuaj moulding tshuab qauv yog xaiv thiab muas ntawm txhaj tshuaj molding tshuab qauv.
Specifications yog tus yuam sij rau kev tswj cov ntaub ntawv hauv cov khoom zoo (los yog ntim), qhov loj thiab cov duab ntawm clamping quab yuam (kN) thiab cov kev qhia hauv qhov kev ntsuas parameter tus nqi feem cuam tshuam, kev txhaj tshuaj thiab qhov zoo ntawm kev txhaj tshuaj yas molding tshuab ziag (los ntim) piv ntawm qhov yuav tsum tau, qhov siab ntawm cov qib high thiab loj ntawm cov pwm thickness loj thiab kev nrug deb ntawm kev txhaj tshuaj molding tshuab template yuav tsum tau, etc.Cov txheej txheem yog raws li nram no.
Ntxiv thiab, qhov nyiaj tau siv rau cov khoom siv.
Q = kX (khoom zoo + khoom rau khiav lub cev)
Qhov twg, k - coefficient yog 1.1 ~ 1.3.
Parliamentary txhaj tshuaj molding tshuab zus tau tej cov khoom no yuav tsum hno cov tshuaj melting.
Qs = Q x 1.05 / rho tawm r
Lub tom kawg yog qhov cwj pwm ua ntsej muag.
Yog li, peb tab tom xam ib qho piv txwv.Qhov zoo ntawm PE cov khoom yog 220g, thiab tus nqi ntawm cov khoom siv hauv kev khiav dej num yog
20g, dab tsi yog tus nqi ntawm cov khoom siv yaj uas tsim nyog los tsim cov khoom no?
A. Cov nqi ntawm cov khoom uas yuav tsum tau siv rau cov khoom siv molding: Q = 1.2X (220 + 20) = 280 (g)
B. Cov tshuaj txhaj rau cov tshuaj txhaj rau tshuaj molding tshuab ntawm Qe = 280 * 1.05 / 0.92 = 319.5 (g).
Qhov theoretical injection ntim ntawm kev txhaj molding tshuab qauv siv los ua qhov no yuav tsum yog me ntsis loj dua 319.5g.
Los xam cov mould quab yuam kev txhaj tshuaj molding.
Tuag hlo = xam xyuas thaj chaw ntawm qhov seem ntsug ntawm tus qauv nrog cov khoom x coefficient
Lub F = kS
Qhov twg, F - ua ke hom quab yuam, t;
S - projection cheeb tsam ntawm cov khoom, cm2;
K - txhaj coefficient ntawm ntau cov ntaub ntawv, t / cm2.
K qhov tseem ceeb ntawm cov ntaub ntawv sib txawv muaj nyob rau hauv rooj 1.
Qhov qis kawg nkaus ntawm cov leeg mob stroke yog xam raws li qhov siab qhov khoom.Qhov kev nrug deb ntawm tus qauv yog loj
Cov lus 1 k tseem ceeb rau kev xam xyuas qhov sib xyaw ua ke ntawm cov khoom sib txawv plastics
Cov ntaub ntawv lub npe PE PP PS ABS PA lwm yam khoom siv phom
(k / t / cm2) txij ntawm 0.32 0.32 0.32 0.32 0.48 0.64 ~ 0.72 0.64 ~ 0.80
Me me los ntawm qhov siab ntawm cov khoom yas thiab pwm (txav ntawm lub puab pwm) los txiav txim seb qhov hnyav ntawm qhov loj me, qhov ntev ntawm qhov txawv txav mus rau qhov ntev yuav tsum yog ntau dua li txav pwm thickness 2 zaug ntxiv, tuaj yeem tawm tom qab tuaj pwm molding qhov yuav tsum .