Kev daws rau overflow ntawm txhaj tshuaj molding tshuab taub hau

Overflow, tseem hu ua flash, ntug overflow, thiab ntug npog, feem ntau tshwm sim ntawm parting thiab kaw txoj hauj lwm ntawm pwm. Piv txwv li, qhov parting nto ntawm pwm, zawv zawg ib feem ntawm lub slider, qhov sib txawv ntawm qhov ntxig, thiab lub qhov ntawm lub ejector tus pin. Yog tias cov dej ntws tsis tau daws tau raws sijhawm, nws yuav nthuav dav ntxiv, ua rau ib feem ntawm lub embossing tuag, ua rau kev puas tsuaj mus tas li. Qhov dhau ntawm qhov sib txawv ntawm qhov ntxig thiab lub qhov ntawm tus pin ejector tseem yuav ua rau cov khoom daig ntawm cov pwm thiab cuam tshuam rau demoulding.
1. Khoom siv
(1) Lub zog clamping tiag tiag ntawm lub tshuab tsis txaus. Thaum xaiv lub tshuab txhaj tshuaj molding, qhov ntsuas clamping quab yuam ntawm lub tshuab yuav tsum siab tshaj qhov nro tsim los ntawm qhov ntev ntawm qhov projected ntawm cov khoom txhaj tshuaj molding thaum lub sij hawm txhaj tshuaj, txwv tsis pub nws yuav ua rau pwm nthuav thiab flash.
(2) Cov pwm kaw cov cuab yeej tsis raug kho kom raug, lub luj tshib mechanism tsis ncaj, ua rau cov pwm tsis sib npaug ntawm sab laug thiab sab xis lossis nce thiab nqis, thiab pwm tsis tuaj yeem ncav cuag, ua rau muaj qhov xwm txheej ntawm ib sab ntawm cov pwm yog nruj nreem kaw thiab lwm sab tsis nruj nreem txuas, thiab flash yuav tshwm sim thaum txhaj tshuaj.
(3) Cov pwm tsis zoo ntawm cov pwm nws tus kheej, lossis kev teeb tsa tsis sib xws, lossis cov qauv tsis sib xws, lossis tsis sib xws quab yuam faib thiab deformation ntawm rub pas nrig, tag nrho cov no yuav ua rau xoob clamping thiab flash.
(4) Kev hnav hnyav ntawm lub nplhaib check, tsis ua haujlwm ntawm lub caij nplooj ntoos hlav nozzle caij nplooj ntoos hlav, hnav ntau dhau ntawm lub thoob lossis ntsia hlau, tsis ua haujlwm ntawm lub tshuab cua txias ntawm cov khoom noj khoom haus, ua rau "bridging" tshwm sim, tsis txaus txhaj tshuaj ntim los ntawm lub thoob, thiab lub ncoo me me dhau lawm yuav ua rau muaj teeb meem ntau zaus, thiab yuav tsum tau kho lossis hloov lub sijhawm.
2. Pwm
(1) Lub precision ntawm parting nto ntawm pwm yog tsis zoo. Lub formwork txav tau (xws li lub phaj nruab nrab) yog deformed thiab warped; Muaj cov teeb meem txawv teb chaws ntawm qhov sib cais los yog muaj qhov sib txawv ntawm cov cim burr nyob ib ncig ntawm lub puab ncej; Lub qaug zog qaug zog nyob ib ncig ntawm lub qhov ncauj ntawm lub qub tuag yog tshwm sim los ntawm lub flash extrusion ua ntej.
(2) Cov pwm tsim tsis tsim nyog. Qhov qhib txoj hauj lwm ntawm cov pwm kab noj hniav nyob deb dhau lawm, uas yuav ua rau muaj kev nro ntawm ib sab ntawm cov pwm thaum txhaj tshuaj thiab ua rau muaj teeb meem.
Lub fluidity ntawm plastics yog zoo heev, xws li polyethylene, polypropylene, nylon, thiab lwm yam, thiab cov viscosity yog tsawg heev nyob rau hauv lub molten lub xeev, yog li nws yog ib qho yooj yim mus nkag mus rau hauv lub movable los yog ruaj qhov sib txawv, uas yuav tsum tau cov pwm raug raug. siab.
Ntawm qhov chaw tsis cuam tshuam rau kev ncaj ncees ntawm cov khoom, nws yuav tsum tau muab tso rau ntawm qhov chaw ntawm huab hwm coj symmetry kom deb li deb tau, thiab cov khoom yuav tsum tau noj ntawm qhov tuab ntawm cov khoom, uas tuaj yeem tiv thaiv qhov xwm txheej ntawm cov khoom ploj thiab ya ntug tib lub sij hawm. Thaum muaj lub qhov molding nyob rau hauv los yog ze ntawm qhov chaw ntawm cov khoom, nws yog ib txwm ua kom qhib lub qhov rooj rau sab ntawm lub qhov. Vim tias nyob rau hauv kev txhaj tshuaj loj, yog tias lub zog clamping tsis txaus, lub zog txhawb nqa ntawm pwm hauv qhov no yuav tsis txaus thiab me ntsis warp, uas ua rau muaj teeb meem. Yog tias muaj cov khoom txav tau ntawm sab ntawm pwm, qhov projected cheeb tsam ntawm nws sab kuj raug cuam tshuam los ntawm molding siab. Yog tias lub zog txhawb nqa tsis txaus, nws tseem yuav ua rau flash.
Qhov tseeb haum ntawm zawv zawg tub ntxhais yog qhov tsis zoo, thiab qhov kev teeb tsa ntawm qhov sib txawv ntawm cov tub ntxhais ruaj khov thiab kab noj hniav yuav ua rau flash. Yog tias cov kab noj hniav tsis zoo, tsis muaj qhov tso pa tawm ntawm qhov seem ntawm cov pwm, lossis cov qhov tso pa tawm yog qhov ntiav dhau, qhov tob lossis loj dhau, lossis thaiv los ntawm cov khoom txawv teb chaws, nws yuav ua rau muaj teeb meem. Rau ntau cov kab noj hniav pwm, kev saib xyuas yuav tsum tau them rau qhov tsim nyog ntawm lub rooj vag ntawm txhua tus neeg khiav dej num, txwv tsis pub nws yuav ua rau lub zog tsis sib xws thiab flash.
3. Txheej txheem
(1) Kev txhaj tshuaj siab dhau lawm lossis kev txhaj tshuaj nrawm dhau. Vim muaj kev kub siab thiab kev kub ceev, qhov qhib quab yuam ntawm pwm nce, uas ua rau cov dej ntws tawm. Kev txhaj tshuaj nrawm thiab lub sijhawm txhaj tshuaj yuav tsum raug kho raws li qhov tuab ntawm cov khoom. Cov khoom nyias nyias yuav tsum tau ntim nrog kev kub ceev thiab ceev, thiab tsis muaj kev txhaj tshuaj yuav tsum tau ua tom qab sau; Cov khoom tuab yuav tsum tau ntim nrog qis ceev thiab daim tawv nqaij yuav tsum tau kho feem ntau ua ntej mus txog qhov kawg siab.
(2) Kev pub mis ntau dhau ua rau flash. Nws yog ib qho tsim nyog sau cia tias cov khoom siv molten ntau dhau yuav tsum tsis txhob txhaj tshuaj los tiv thaiv kev nyuaj siab, kom tsis txhob muaj kev nyuaj siab "sau", tab sis lub flash yuav tshwm sim. Qhov teeb meem no yuav tsum tau daws los ntawm kev ncua sij hawm txhaj tshuaj los yog lub sij hawm tuav.
(3) kub siab heev ntawm lub thoob, nozzle los yog pwm yuav txo tau cov viscosity ntawm cov yas, ua kom lub fluidity, thiab ua rau flash thaum lub pwm yog smoothly ntxig.
4. Cov khoom siv raw
(1) Flashing tuaj yeem tshwm sim yog tias cov viscosity ntawm cov yas siab dhau lossis qis dhau. Rau cov yas uas muaj viscosity tsawg, xws li nylon, polyethylene, polypropylene, thiab lwm yam, lub clamping quab yuam yuav tsum tau txhim kho; Cov yas uas muaj zog nqus dej los yog rhiab heev rau cov dej yuav txo tau cov viscosity ntws zoo heev thiab ua rau muaj kev kub ntxhov hauv qhov kub. Cov yas no yuav tsum tau qhuav kom huv si; Yog tias cov khoom siv rov ua dua ntau dhau lawm, cov viscosity ntawm cov yas kuj yuav txo qis, thiab cov khoom khaws cia yuav tsum tau ntxiv yog tias tsim nyog. Yog hais tias lub viscosity ntawm cov yas yog siab dhau lawm, cov ndlwg tsis kam yuav nce, ua rau lub zog rov qab loj, uas yuav ua rau kom lub siab ntawm pwm kab noj hniav, ua rau tsis txaus clamping quab yuam thiab flash.
(2) Thaum qhov loj me me ntawm cov khoom siv yas tsis sib npaug, qhov kev pub mis yuav sib txawv, thiab cov khoom yuav tsis txaus siab lossis flash.