模(mo)溫機又叫(jiao)模(mo)具溫度(du)控(kong)制(zhi)(zhi)機,廣泛應(ying)用于塑膠(jiao)成型(xing),導光板壓鑄(zhu),橡膠(jiao)輪(lun)(lun)胎、滾輪(lun)(lun),化工反應(ying)釜、粘合、密煉(lian)等(deng)各(ge)行各(ge)業。從(cong)廣義方(fang)面講,叫(jiao)溫度(du)控(kong)制(zhi)(zhi)設(she)備,包含加溫和冷凍兩(liang)個方(fang)面的溫度(du)控(kong)制(zhi)(zhi)。
現(xian)在(zai)模溫(wen)(wen)(wen)(wen)機(ji)一般分水(shui)(shui)溫(wen)(wen)(wen)(wen)機(ji)、油溫(wen)(wen)(wen)(wen)機(ji)控制的(de)溫(wen)(wen)(wen)(wen)度可以達到正負0.1度。標準型(xing)水(shui)(shui)介(jie)質(zhi)模溫(wen)(wen)(wen)(wen)機(ji)工作較高溫(wen)(wen)(wen)(wen)度為(wei)120℃,高溫(wen)(wen)(wen)(wen)型(xing)水(shui)(shui)介(jie)質(zhi)模溫(wen)(wen)(wen)(wen)機(ji)工作較高180℃。水(shui)(shui)式(shi)模溫(wen)(wen)(wen)(wen)機(ji)由(you)于比(bi)較干凈,常用(yong)于光學鏡片、注塑成型(xing)等行(xing)業。
油(you)(you)(you)(you)式(shi)模溫(wen)機(ji)(ji)又叫油(you)(you)(you)(you)溫(wen)機(ji)(ji)或是(shi)油(you)(you)(you)(you)加熱器,油(you)(you)(you)(you)式(shi)模溫(wen)機(ji)(ji)(油(you)(you)(you)(you)溫(wen)機(ji)(ji)):油(you)(you)(you)(you)式(shi)模溫(wen)機(ji)(ji)分為(wei)三個等級:標(biao)準型(xing)、高(gao)溫(wen)型(xing)、超高(gao)溫(wen)型(xing),較高(gao)工作溫(wen)度分別為(wei)180℃,300℃,350℃。
其(qi)工(gong)作原理(li):模(mo)溫(wen)機管路與模(mo)具油(you)(you)道連接構(gou)成(cheng)回路,導熱(re)油(you)(you)在泵的作用下進(jin)行循環。溫(wen)度傳感器將(jiang)數(shu)據傳送到控制系(xi)統,自動(dong)(dong)調整(zheng)加熱(re)/冷卻(que)動(dong)(dong)作,控制導熱(re)油(you)(you)溫(wen)度。
模溫(wen)機在(zai)塑膠行業的運用比(bi)較(jiao)普遍,主要作用是:
1,提高產品的成型效率;
2,降低不良品的產生;
3,提(ti)高產品的外觀,抑(yi)制產品的缺陷(xian);
4,加快(kuai)生產進(jin)度,降低能(neng)耗,節約能(neng)源。
模(mo)溫機(ji)在壓鑄行業的(de)運用也有很大(da)的(de)空(kong)間,特(te)別是在鎂合金(jin),鋁(lv)合金(jin)的(de)制造中(zhong)(zhong),不(bu)平均(jun)或不(bu)適當的(de)模(mo)具溫度會(hui)導致(zhi)鑄件尺寸不(bu)穩定,在生(sheng)(sheng)產(chan)(chan)過程中(zhong)(zhong)頂出鑄件變形,產(chan)(chan)生(sheng)(sheng)熱(re)壓力、黏(nian)模(mo)、表面凹陷、內縮(suo)孔及(ji)熱(re)泡(pao)等(deng)缺陷。對生(sheng)(sheng)產(chan)(chan)周期也產(chan)(chan)生(sheng)(sheng)影(ying)響,如(ru)填充時間、冷卻時間及(ji)噴涂時間都產(chan)(chan)生(sheng)(sheng)不(bu)穩定的(de)變數。模(mo)具的(de)壽命也會(hui)因(yin)受(shou)到過冷過熱(re)的(de)沖擊而導致(zhi)昂貴的(de)鋼材(cai)產(chan)(chan)生(sheng)(sheng)熱(re)裂,加速其老化。
在(zai)現代化的工廠中,因應市場的競爭(zheng),節省人力,提高品質,降(jiang)低成(cheng)(cheng)本的經營策(ce)略是刻(ke)不容緩的,模溫機的使用,可使模具(ju)預(yu)熱時間減少,成(cheng)(cheng)品表(biao)面(mian)質量(liang)提升(sheng)及可完全自動化生產。提高模具(ju)壽命是提高生產力的必要手段。
溫(wen)(wen)(wen)度控(kong)制機在(zai)(zai)其(qi)他行(xing)業的運用則是設(she)(she)備(bei)構成的必然條件,叫(jiao)法(fa)也不同(tong)。在(zai)(zai)PVC片材(cai)輥輪控(kong)溫(wen)(wen)(wen)中(zhong)叫(jiao)油加熱器,在(zai)(zai)擠出機設(she)(she)備(bei)中(zhong)叫(jiao)溫(wen)(wen)(wen)控(kong)裝置,在(zai)(zai)橡(xiang)(xiang)膠(jiao)密煉機設(she)(she)備(bei)中(zhong)叫(jiao)溫(wen)(wen)(wen)度控(kong)制系(xi)統或叫(jiao)溫(wen)(wen)(wen)控(kong)機,這(zhe)些設(she)(she)備(bei)中(zhong)基本上(shang)是一個(ge)先快速升溫(wen)(wen)(wen),然后是保(bao)溫(wen)(wen)(wen)的過程。而在(zai)(zai)橡(xiang)(xiang)膠(jiao)設(she)(she)備(bei)中(zhong)升溫(wen)(wen)(wen)后還需要長期執行(xing)一個(ge)降(jiang)溫(wen)(wen)(wen)冷卻的過程。?