自(zi)動(dong)封口包(bao)裝(zhuang)設備是通(tong)過(guo)光感傳感器來實(shi)現光標(biao)定(ding)(ding)位(wei)，然(ran)后通(tong)過(guo)光控系統(tong)(tong)對包(bao)裝(zhuang)系統(tong)(tong)進(jin)行同(tong)步控制，以(yi)此(ci)完成自(zi)動(dong)封口包(bao)裝(zhuang)。用(yong)來實(shi)現定(ding)(ding)位(wei)控制的光電技(ji)術可(ke)提供一(yi)種(zhong)用(yong)固定(ding)(ding)標(biao)志點結合線性或旋轉運(yun)動(dong)部(bu)件來實(shi)現簡單可(ke)重復運(yun)動(dong)的方法。它利用(yong)了(le)與一(yi)對光電管并聯工(gong)作的一(yi)個功率運(yun)放的快速響(xiang)應(ying)時(shi)間。由此(ci)實(shi)現的一(yi)種(zhong)元(yuan)件數量很(hen)少的系統(tong)(tong)，能在明(ming)確(que)規定(ding)(ding)的工(gong)作環境下，具(ju)有很(hen)高的可(ke)靠(kao)性、準確(que)性以(yi)及可(ke)重復性。

    在線連卷制袋機在(zai)(zai)自(zi)動(dong)(dong)包裝過(guo)程(cheng)中，由于商標(biao)印刷(shua)誤差(cha)(cha)，薄膜(mo)變形不(bu)一，牽引輥打滑，送紙，拉紙，中封(feng)(feng)，橫封(feng)(feng)各(ge)部分速度的差(cha)(cha)異(yi)，橫封(feng)(feng)切斷位(wei)置可能(neng)偏離規定部位(wei)，甚至因誤差(cha)(cha)積累而切到(dao)商標(biao)圖(tu)案上(shang)。為此，先進的包裝機都(dou)配有光電(dian)跟蹤(zong)自(zi)動(dong)(dong)控(kong)制系(xi)統，以控(kong)制封(feng)(feng)切位(wei)置使(shi)之保(bao)持正確，保(bao)證(zheng)每次都(dou)在(zai)(zai)定位(wei)標(biao)記(ji)確定的位(wei)置處封(feng)(feng)接切斷，不(bu)致于封(feng)(feng)切到(dao)圖(tu)案上(shang)。這(zhe)就(jiu)是光感傳(chuan)感器在(zai)(zai)自(zi)動(dong)(dong)封(feng)(feng)口控(kong)制系(xi)統的主(zhu)要應用。