在注塑制品本錢構(gòu)成中，電費(fèi)占了恰當(dāng)份額。根據(jù)注塑機(jī)設(shè)備技術(shù)情況，注塑機(jī)油泵馬達(dá)耗占悉數(shù)設(shè)備耗電量的份額高達(dá)50%~65%，因而也極具節(jié)能潛力。旨在降低能量損耗的各種領(lǐng)先節(jié)能控制技術(shù)，正在逐漸成為注塑機(jī)電液系統(tǒng)的研討關(guān)鍵。
現(xiàn)在，國產(chǎn)注塑機(jī)電液控制技術(shù)幾乎悉數(shù)運(yùn)用電液份額技術(shù)，其技術(shù)特征是用三通型份額調(diào)速閥控制速度。該電液份額技術(shù)雖可大大減少元件數(shù)量，但因選用定量泵供油，工作進(jìn)程中一貫存在與流量有關(guān)的能量丟掉，國外已很少選用。
注塑機(jī)技術(shù)進(jìn)程通常分為鎖模、打針、塑化、保壓、冷卻、開模等幾個(gè)期間，各個(gè)期間需求不一樣的壓力和流量。對油泵馬達(dá)而言，注塑進(jìn)程處于改動(dòng)的負(fù)載情況，在定量泵的液壓系統(tǒng)中，油泵馬達(dá)以安穩(wěn)轉(zhuǎn)速供給安穩(wěn)流量，剩余的液壓油通過溢流閥回流，此進(jìn)程稱為高壓節(jié)省。據(jù)統(tǒng)計(jì)，由高壓節(jié)省構(gòu)成的能量丟掉高達(dá)36%~68%。
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