自動(dong)(dong)(dong)封口包裝(zhuang)設備是通(tong)過(guo)光(guang)(guang)(guang)感(gan)傳感(gan)器(qi)來實(shi)現(xian)光(guang)(guang)(guang)標(biao)定位，然(ran)后通(tong)過(guo)光(guang)(guang)(guang)控系統對(dui)包裝(zhuang)系統進行同(tong)步控制(zhi)，以(yi)此(ci)完成自動(dong)(dong)(dong)封口包裝(zhuang)。用(yong)來實(shi)現(xian)定位控制(zhi)的(de)(de)光(guang)(guang)(guang)電技術可提(ti)供一種用(yong)固定標(biao)志點結合(he)線性(xing)或(huo)旋轉運(yun)(yun)動(dong)(dong)(dong)部件來實(shi)現(xian)簡單(dan)可重(zhong)復運(yun)(yun)動(dong)(dong)(dong)的(de)(de)方法。它利用(yong)了與一對(dui)光(guang)(guang)(guang)電管并聯工(gong)作的(de)(de)一個功率(lv)運(yun)(yun)放的(de)(de)快速響應時間。由此(ci)實(shi)現(xian)的(de)(de)一種元件數(shu)量很(hen)少(shao)的(de)(de)系統，能(neng)在明確規定的(de)(de)工(gong)作環(huan)境下，具有很(hen)高的(de)(de)可靠性(xing)、準(zhun)確性(xing)以(yi)及可重(zhong)復性(xing)。

    在線連卷制袋機在自(zi)動(dong)(dong)包裝(zhuang)過程中，由(you)于商標(biao)(biao)印刷誤差，薄膜變形不(bu)(bu)一，牽引(yin)輥打滑，送紙，拉(la)紙，中封(feng)，橫封(feng)各(ge)部分速度的差異，橫封(feng)切斷位(wei)置(zhi)可能偏離規定(ding)部位(wei)，甚至因誤差積(ji)累而切到商標(biao)(biao)圖(tu)案上(shang)(shang)。為此，先(xian)進的包裝(zhuang)機都(dou)配有(you)光電(dian)跟蹤自(zi)動(dong)(dong)控(kong)制(zhi)系統(tong)(tong)，以控(kong)制(zhi)封(feng)切位(wei)置(zhi)使之保(bao)持(chi)正確，保(bao)證每(mei)次都(dou)在定(ding)位(wei)標(biao)(biao)記確定(ding)的位(wei)置(zhi)處(chu)封(feng)接切斷，不(bu)(bu)致(zhi)于封(feng)切到圖(tu)案上(shang)(shang)。這(zhe)就是光感(gan)傳感(gan)器在自(zi)動(dong)(dong)封(feng)口控(kong)制(zhi)系統(tong)(tong)的主要應用(yong)。