東莞市卓鼎機械設備科技有限公司
座機:0769-87887989
傳(chuan)真:0769-87881865
手(shou)機:0769-87887989
Http:www.plmoknj3.cn
地址(zhi):東莞(guan)市塘(tang)廈鎮清湖頭(tou)社區(qu)清湖路9B號(hao)2棟
粉末靜電噴涂工藝曾是我國重點推廣的新技術之一。該工藝發展速度較 快,已廣泛地應用于儀器儀表、縫紉機、機電設備、農業機械、家用電器、玩具等產品的噴涂,前景十分樂觀。洗衣機涂裝設備一般包(bao)括高壓(ya)靜(jing)(jing)電(dian)(dian)(dian)發生(sheng)器、靜(jing)(jing)電(dian)(dian)(dian)噴槍(qiang)、供粉(fen)裝(zhuang) 置、噴粉(fen)室、粉(fen)末回收(shou)裝(zhuang)置和固化烘道等。以(yi)下(xia)講以(yi)下(xia)高壓(ya)靜(jing)(jing)電(dian)(dian)(dian)發生(sheng)器和靜(jing)(jing)電(dian)(dian)(dian)噴槍(qiang)的性能(neng):
靜(jing)電噴槍
目前除了很(hen)少的(de)(de)(de)手(shou)工噴(pen)(pen)(pen)(pen)涂外(wai),大部分廠家都采用(yong)(yong)自動噴(pen)(pen)(pen)(pen)涂的(de)(de)(de)方(fang)法,即(ji)將噴(pen)(pen)(pen)(pen)槍(qiang)安裝(zhuang)在(zai)自動往復機上,作(zuo)上下(xia)往復運動。對(dui)噴(pen)(pen)(pen)(pen)槍(qiang)的(de)(de)(de)材料(liao)要求,一(yi)(yi)是電(dian)(dian)(dian)絕緣性能(neng)好,二是導電(dian)(dian)(dian)性能(neng)優。由于噴(pen)(pen)(pen)(pen)嘴前部裝(zhuang)有(you)圓(yuan)錐體調(diao)節,噴(pen)(pen)(pen)(pen)涂圓(yuan)形(xing)面積的(de)(de)(de)大小調(diao)節方(fang)便(bian)。從國(guo)外(wai)引進的(de)(de)(de)噴(pen)(pen)(pen)(pen)槍(qiang)結(jie)構來看,一(yi)(yi)種(zhong)是采用(yong)(yong)高(gao)(gao)壓(ya)(ya)液體電(dian)(dian)(dian)纜,在(zai)意外(wai)發(fa)生破(po)損時,它不會發(fa)生危(wei)險(xian),另一(yi)(yi)種(zhong)是將高(gao)(gao)電(dian)(dian)(dian)壓(ya)(ya)的(de)(de)(de)供給組裝(zhuang)在(zai)噴(pen)(pen)(pen)(pen)槍(qiang)之內,這(zhe)樣就用(yong)(yong)不著(zhu)僵(jiang)硬(ying)和(he)易(yi)受干(gan)擾的(de)(de)(de)高(gao)(gao)壓(ya)(ya)電(dian)(dian)(dian)纜,因而消(xiao)除了長高(gao)(gao)壓(ya)(ya)電(dian)(dian)(dian)纜和(he)電(dian)(dian)(dian)阻的(de)(de)(de)損耗(hao),使設備更加可靠和(he)安全地工作(zuo)。如果工件與噴(pen)(pen)(pen)(pen)槍(qiang)靠得(de)太近(jin)(jin),電(dian)(dian)(dian)壓(ya)(ya)會隨著(zhu)靠近(jin)(jin)的(de)(de)(de)程(cheng)度(du)相應(ying)地改變。它是通過一(yi)(yi)個(ge)可調(diao)關(guan)(guan)閉點導致觸發(fa)一(yi)(yi)個(ge)信號(hao)。 這(zhe)個(ge)信號(hao)一(yi)(yi)方(fang)面關(guan)(guan)斷高(gao)(gao)壓(ya)(ya),另一(yi)(yi)方(fang)面防止了對(dui)噴(pen)(pen)(pen)(pen)槍(qiang)和(he)工件造(zao)成的(de)(de)(de)損壞。
高壓靜電發生器
高(gao)(gao)(gao)壓(ya)(ya)靜(jing)電(dian)發生(sheng)器在電(dian)路原理方面(mian)大都采(cai)用(yong)高(gao)(gao)(gao)頻振蕩電(dian)路產生(sheng)髙頻信號,經(jing)變壓(ya)(ya)器升壓(ya)(ya),最后送倍壓(ya)(ya)整流(liu)(liu)電(dian)路獲得直流(liu)(liu)高(gao)(gao)(gao)壓(ya)(ya)。目前我(wo)國生(sheng)產的(de)(de)主要有電(dian)子真空管、晶體管、 晶體管與集(ji)(ji)成電(dian)路復合(he)塊和國產集(ji)(ji)成電(dian)路等 高(gao)(gao)(gao)壓(ya)(ya)發生(sheng)器。粉末靜(jing)電(dian)噴涂(tu)的(de)(de)高(gao)(gao)(gao)壓(ya)(ya)電(dian)源,必須能產生(sheng)高(gao)(gao)(gao)強(qiang)度的(de)(de)靜(jing)電(dian)場,從安全角度考 慮,一般是輸出電(dian)壓(ya)(ya)高(gao)(gao)(gao)而電(dian)流(liu)(liu)低(di),通常的(de)(de)電(dian)壓(ya)(ya)為8萬伏左右,電(dian)流(liu)(liu)則低(di)于300微安。