Lub hauv paus ntsiab lus ntawm Txhaj Molding
Cov txheej txheem txhaj tshuaj molding yog lub voj voog txuas ntxiv uas hloov cov yas pellets rau hauv cov khoom tiav. Lub voj voog tseem ceeb muaj tsib theem tseem ceeb:
- Melting (Plasticizing): Yas pellets tau muab tso rau hauv lub taub rhaub dej kub, qhov chaw ua ke ntawm cov cua sov thiab cov shearing txiav txim ntawm cov rotating ntsia hlau melts cov khoom mus rau hauv lub xeev homogeneous.
- Txhaj: Cov ntsia hlau ua raws li lub plunger, thawb cov yas molten ntawm kev kub ceev thiab siab los ntawm lub nozzle thiab mus rau hauv lub kaw pwm kab noj hniav.
- Packing & Tuav: Tom qab cov kab noj hniav puv lawm, lub siab ntxiv yog siv los ntim ntau cov khoom rau hauv pwm kom them rau qhov ntim ntim raws li cov yas txias.
- Txias: Cov yas molten hauv pwm solidifies. Lub sijhawm txias txias feem ntau suav rau feem ntau ntawm tag nrho lub sijhawm voj voog.
- Ejection: Cov pwm qhib, thiab ib qho ejection system thawb cov khoom khov tawm ntawm cov kab noj hniav, npaj cov pwm rau lub voj voog tom ntej.
Core Mould Structure
Kev txhaj tshuaj pwm yog cov cuab yeej siv tshuab zoo heev, feem ntau muaj cov txheej txheem tseem ceeb hauv qab no:
- Gating System: Qhov no suav nrog sprue, khiav, thiab rooj vag. Nws ua raws li txoj hauv kev uas coj cov yas molten los ntawm lub tshuab txhaj tshuaj lub nozzle rau hauv pwm kab noj hniav.
- Cooling System: Ib lub network ntawm cov cua txias hauv cov kab (dej kab) machined rau hauv pwm daim hlau. Nws lub hom phiaj yog kom circulate coolant kom nqus cua sov, ua kom ceev ceev thiab zoo ib yam txias kom txo tau lub sij hawm voj voog thiab tiv thaiv warpage.
- Forming Components:
Cavity: Qhov hollowed -tawm seem uas ua rau sab nrauv ntawm ib feem (feem ntau nyob rau ntawm qhov chaw nres tsheb).
Core: Cov seem uas ua rau sab hauv ntawm qhov chaw (feem ntau yog nyob rau sab txav).
Inserts: Cov khoom siv hloov pauv tau siv los tsim cov yam ntxwv tshwj xeeb lossis ua kom yooj yim machining thiab txij nkawm.
- Ejection System: Mechanisms tsim kom muaj kev nyab xeeb tshem tawm ntawm cov pwm. Cov hom muaj xws li ejector pins, stripper daim hlau, cua poppets, thiab hydraulic cylinders rau complex geometries.
- Kev taw qhia & Kev Pab Txhawb Cov Txheej Txheem: Cov khoom xws li cov lus qhia pins (tus thawj coj pins) thiab bushings xyuas kom meej qhov kev sib dhos ntawm qhov chaw ruaj khov thiab txav pwm thaum lub sijhawm kaw. Cov ncej txhawb nqa yog siv los tiv thaiv qhov kev txhaj tshuaj loj heev thiab tiv thaiv pwm deflection.
