貼(tie)片機(ji)(ji)主要由(you)貼(tie)裝(zhuang)(zhuang)頭和(he)(he)靜(jing)鏡(jing)(jing)頭構成,先貼(tie)裝(zhuang)(zhuang)頭根據導(dao)入的(de)(de)(de)貼(tie)裝(zhuang)(zhuang)元件(jian)(jian)的(de)(de)(de)封裝(zhuang)(zhuang)類(lei)型、元件(jian)(jian)編(bian)號等參數到 PCB 板(ban)的(de)(de)(de)相(xiang)應位(wei)置上抓取吸嘴、吸取元件(jian)(jian)。其次靜(jing)鏡(jing)(jing)頭根據視覺(jue)處理程序對(dui)吸取元件(jian)(jian)進(jin)行檢測、識別和(he)(he)對(dui)中。然后貼(tie)裝(zhuang)(zhuang)頭將(jiang)元件(jian)(jian)貼(tie)裝(zhuang)(zhuang)到 PCB 板(ban)的(de)(de)(de)相(xiang)應位(wei)置上,貼(tie)片機(ji)(ji)靜(jing)鏡(jing)(jing)頭也就是(shi)貼(tie)片機(ji)(ji)傳感(gan)器(qi)(qi),傳感(gan)器(qi)(qi)作用(yong)是(shi)可(ke)進(jin)行元件(jian)(jian)電(dian)器(qi)(qi)性(xing)能檢查,它(ta)們像貼(tie)片機(ji)(ji)的(de)(de)(de)眼睛一樣,時刻(ke)監視機(ji)(ji)器(qi)(qi)的(de)(de)(de)正常(chang)運轉。
貼片(pian)機(ji)的傳(chuan)感(gan)器主要有哪(na)些:
1、壓(ya)力傳感器(qi)貼片機中,包括各種氣(qi)缸和真空發生器(qi),均對(dui)空氣(qi)壓(ya)力有一定(ding)的要求,低(di)于設(she)備要求的壓(ya)力時(shi),機器(qi)就不能(neng)正常運轉,壓(ya)力傳感器(qi)始終(zhong)監視著(zhu)壓(ya)力變化(hua),一旦異常,即及(ji)時(shi)報警,提醒操作(zuo)者及(ji)時(shi)處理。
2、負壓傳(chuan)感器(qi)(qi)(qi)貼片機(ji)的吸(xi)(xi)(xi)嘴靠負壓吸(xi)(xi)(xi)取元(yuan)(yuan)器(qi)(qi)(qi)件(jian)(jian),由負壓發(fa)(fa)生器(qi)(qi)(qi)(射流真空發(fa)(fa)生器(qi)(qi)(qi))和真空傳(chuan)感器(qi)(qi)(qi)組(zu)成。負壓不(bu)(bu)夠,將吸(xi)(xi)(xi)不(bu)(bu)住(zhu)元(yuan)(yuan)器(qi)(qi)(qi)件(jian)(jian),供(gong)料(liao)器(qi)(qi)(qi)沒(mei)有元(yuan)(yuan)器(qi)(qi)(qi)件(jian)(jian)或(huo)元(yuan)(yuan)件(jian)(jian)卡在(zai)料(liao)包中不(bu)(bu)能被吸(xi)(xi)(xi)起時(shi),吸(xi)(xi)(xi)嘴將吸(xi)(xi)(xi)不(bu)(bu)到元(yuan)(yuan)器(qi)(qi)(qi)件(jian)(jian),這些情況出現(xian)會影(ying)響機(ji)器(qi)(qi)(qi)正常(chang)工作。而(er)負壓傳(chuan)感器(qi)(qi)(qi)始終監視負壓變化,出現(xian)吸(xi)(xi)(xi)不(bu)(bu)到或(huo)吸(xi)(xi)(xi)不(bu)(bu)住(zhu)元(yuan)(yuan)器(qi)(qi)(qi)件(jian)(jian)的情況時(shi)能及時(shi)報警,提醒(xing)操作者更換供(gong)料(liao)器(qi)(qi)(qi)或(huo)檢查吸(xi)(xi)(xi)嘴負壓系(xi)統是否堵塞。
3、位(wei)置(zhi)傳(chuan)感器(qi)印制(zhi)板(ban)的傳(chuan)輸定位(wei),包括 PCB 的計數,貼(tie)片(pian)頭和(he)工作(zuo)臺運(yun)動的實(shi)(shi)時檢測,輔助機構的運(yun)動等,都對位(wei)置(zhi)有嚴格(ge)要求,這些(xie)位(wei)置(zhi)需要通過(guo)各種形(xing)式的位(wei)置(zhi)傳(chuan)感器(qi)來實(shi)(shi)現(xian)。
4、圖象(xiang)(xiang)傳感器(qi)貼(tie)(tie)片(pian)機工作(zuo)狀(zhuang)態的實時顯示,主要(yao)采(cai)用(yong) CCD 圖象(xiang)(xiang)傳感器(qi),它能(neng)采(cai)集各種(zhong)所(suo)需(xu)的圖象(xiang)(xiang)信號,包括 PCB 位置、器(qi)件(jian)尺寸、并經(jing)計算機分析處理,使貼(tie)(tie)片(pian)頭完成調整與貼(tie)(tie)片(pian)工作(zuo)。
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