Dab tsi yog hom hlau txhaj tshuaj molding ua pwm?

Dab tsi yog hom hlau txhaj tshuaj molding ua pwm?

Feem ntau, txoj kev no yog siv los ua cov pwm hauv ob ntu. Ib qho yog kab noj hniav, muab cov duab concave. Qhov thib ob yog lub hauv paus, uas ua rau ib feem ntawm cov duab puab. Tus nqi yog nyob ntawm seb ib feem ntawm cov geometry tau txais.

Raws li ib feem ntawm txoj kev, lub complexity ntawm pwm nce thiab ua kim dua. Nyob rau hauv cov txheej txheem ntawm cov hlau txhaj tshuaj molding, cov yaj ntawm lub tshuab txhaj tshuaj molding yog txhaj rau hauv cov thermoplastic ntawm cov pwm nyob rau hauv siab. Molten yas txias thiab solidifies nyob rau hauv lub pwm ntawm cov duab. Qhov tsim yog tawm ntawm pwm. Qhov kev xav tau rau lub tshuab ejection thawb ib feem ntawm cov pwm vim tias qhov seem shrinks mus rau hauv cov tub ntxhais thaum nws txias. Qhov no yog ib qho pwm uas feem ntau nyob ntawm lub hauv paus nrog ejection pins. Hlau txhaj molding pwm hom:

1. Extrusion muaj feem xyuam rau kev tsim cov kav dej, cov pas nrig thiab lwm qhov chaw hla. Cov khoom siv thermoplastic yog muab tso rau hauv cov khoom noj extrusion chim ntawm lub hopper, nrog rau cov ntsia hlau tig. Lub melted hais thiab kev sib txhuam ntawm lub thoob lub rhaub ua kom sov los ntawm cov ntsia hlau kom tswj tau cov melted hais. Qhuav thiab tom qab ntawd quab yuam qhov tsim los ntawm qhov zoo tshaj plaws geometric pwm qhov. Tsis zoo li kev txhaj tshuaj molding, extrusion yog cov txheej txheem txuas ntxiv hauv cov txheej txheem ntawm cov pwm txias kom ntxiv cov ntaub ntawv tshiab, thiab cov ntaub ntawv ntws mus rau hauv lub thoob rau extrusion. Yog li ntawd, extrusion manufacturing zoo heev.

2. Compression molding. Compression hlau txhaj tshuaj molding tshuab yog siv los tsim cov khoom siv thermosetting. Cov pwm yog ntsia rau ntawm chav cua sov thiab hluav taws xob. Cov khoom siv raw feem ntau hu ua hluav taws xob, uas softens hauv pwm kab noj hniav. Tom qab ntawd cov pwm sealing khoom raug yuam kom siv cov pwm. Cov pwm tseem kaw kom txog thaum ib feem ntawm lub siab.