【正文】 顯示的一瞬間的數(shù)字為準,這個數(shù)字一般是以這點為標準,即于此點則起不了高壓,高于此點則大,%25%,視乎不同機種而定,壓力一般設定于12%,有些機則可設于515%,也是視乎不同機種不同. Mold closing: highspeed →lowspeed →low pressure→high pressure Low pressure high pressure speed Mold opening parameter: Section 2 Molding parameter Setting (2)合模參數(shù) (1).注塑參數(shù) 第一節(jié) 成型工藝 Highpressure section: To normal injection molding machine, highpressure position had been set before they were sent to customer. It can not be modified. For example highpressure position of CHENHSONG machine is speed of highpressure section is about 3035% and higher than that of lowpressure. The pressure is up to mold, it can set within 5585% For fullplate mold, it’s eject air well, it can set pressure 55% .If mold has a lot of slides and flash rate high in production, pressure can set 90%. ,一般出于對機臺油路中的油封保護需要,油溫最好能控制在40度60度,以免油封長期高壓而變化,縮短使用壽命,造成成型不穩(wěn)定. Name熔點℃ ,當然也可以依據(jù)公式來計算,如公式: Si:注射行程。 Step 2 inject 2/3 of product. It can lower 2/3 of product according to requirement of product. For example to prevent weld line. Molding speed and pressure on this step is the maximum of whole molding section. If Mold suit the injection molding machine and mold structure reasonable and eject air well, pressure of this step should lower 80%. Molding speed setting within 5580% but it may setting 95% for especial product. Plastic Technique There is a mold opening step after product cooling taking shape. Mold opening is a reverse step of mold closing. The last step of mold opening speed set slow. Product should be knocked out after mold opened. The same as knocking out, ejector back includes 2 steps. To protect the ejector oil jar, it should make a 13mm distance in the ending point of ejector back. Injection time consists holding pressure time. Longer injection time, fuller product, we should consider production quantity when we suit for quality. If injection time too long, it may cause a series of defects suck as flash strain. So all sorts of factors should be considered, injection time should be shout if quality suit for requirement. Lowpressure protect is very important for safety and protect mold, Mold protect time should adjust within 13 second suit low pressure and position of mold protect, shorter protect time, make damaged