張力控制器(qi)的基本構(gou)成

一套典型的張力(li)(li)(li)控(kong)(kong)制系(xi)統主要由張力(li)(li)(li)控(kong)(kong)制器(qi)，仟代張力(li)(li)(li)控(kong)(kong)制器(qi)廠，張力(li)(li)(li)讀出器(qi)，張力(li)(li)(li)檢(jian)測器(qi)，磁粉制動器(qi)和離合器(qi)構成。根(gen)據環(huan)路可(ke)分(fen)為(wei)(wei)開環(huan)，閉環(huan)或自由環(huan)張力(li)(li)(li)控(kong)(kong)制系(xi)統；根(gen)據對不同卷材(cai)的監測方式又(you)可(ke)分(fen)為(wei)(wei)超聲波式，浮輥式，跟蹤(zong)臂式等。

張力(li)控(kong)制(zhi)的穩(wen)定(ding)與(yu)否直(zhi)接關系到分切產(chan)品(pin)(pin)的質量。若(ruo)張力(li)不足，原(yuan)料在運行中產(chan)生漂移，會出現分切復卷后(hou)成品(pin)(pin)紙(zhi)起皺現象；若(ruo)張力(li)過(guo)大，原(yuan)料又易被拉斷，仟代張力(li)控(kong)制(zhi)器報價，使分切復卷后(hou)成品(pin)(pin)紙(zhi)斷頭增多(duo)。

張力(li)控(kong)制器在凹(ao)印(yin)設(she)備(bei)制造業的(de)運用

1.凹印機料卷(juan)(juan)在(zai)收(shou)、放卷(juan)(juan)過程(cheng)中，收(shou)卷(juan)(juan)和放卷(juan)(juan)直(zhi)徑(jing)(jing)是不(bu)斷變(bian)化的，直(zhi)徑(jing)(jing)的變(bian)化必須(xu)會(hui)引起(qi)(qi)料帶張力的變(bian)化。放卷(juan)(juan)在(zai)制動(dong)力矩不(bu)變(bian)的情況下，直(zhi)徑(jing)(jing)減少(shao)(shao)，張力將隨之(zhi)增大(da)。而收(shou)卷(juan)(juan)則相(xiang)反，如(ru)果收(shou)卷(juan)(juan)力矩不(bu)變(bian)時(shi)，隨著收(shou)卷(juan)(juan)直(zhi)徑(jing)(jing)增大(da)，張力將減少(shao)(shao)。這是凹印機的固有(you)特性(xing)所決定的，也是引起(qi)(qi)料帶張力變(bian)化的主要(yao)因素(su)之(zhi)一(yi)。

2.料(liao)帶(dai)內(nei)在材(cai)質的不(bu)均勻性。如材(cai)料(liao)彈性模量的波動，材(cai)料(liao)厚度(du)沿寬度(du)、長度(du)方向(xiang)變化等(deng)，仟代(dai)張力控制器(qi)現貨，料(liao)卷的質量偏心(xin)，仟代(dai)張力控制器(qi)，以及生產環(huan)境(jing)溫(wen)度(du)、濕度(du)變化，都(dou)會對張力控制器(qi)整機的張力波動帶(dai)來微妙的影響。

張力控制器系統(tong)調節關(guan)鍵點(dian)

張(zhang)(zhang)(zhang)(zhang)(zhang)力(li)(li)(li)(li)(li)操(cao)(cao)(cao)(cao)(cao)控(kong)(kong)(kong)(kong)(kong)不受外(wai)界剌激的(de)(de)(de)(de)(de)影(ying)響，能實(shi)(shi)施(shi)安穩(wen)的(de)(de)(de)(de)(de)張(zhang)(zhang)(zhang)(zhang)(zhang)力(li)(li)(li)(li)(li)操(cao)(cao)(cao)(cao)(cao)控(kong)(kong)(kong)(kong)(kong)。可是(shi)(shi)，因(yin)為受傳(chuan)動(dong)(dong)設(she)(she)備的(de)(de)(de)(de)(de)轉(zhuan)矩改變(bian)、線性改變(bian)和機械損耗等(deng)要素影(ying)響，這種張(zhang)(zhang)(zhang)(zhang)(zhang)力(li)(li)(li)(li)(li)操(cao)(cao)(cao)(cao)(cao)控(kong)(kong)(kong)(kong)(kong)的(de)(de)(de)(de)(de)肯定精度(du)(du)較(jiao)差。閉環(huan)式(shi)全自(zi)(zi)動(dong)(dong)張(zhang)(zhang)(zhang)(zhang)(zhang)力(li)(li)(li)(li)(li)操(cao)(cao)(cao)(cao)(cao)控(kong)(kong)(kong)(kong)(kong)是(shi)(shi)由張(zhang)(zhang)(zhang)(zhang)(zhang)力(li)(li)(li)(li)(li)傳(chuan)感器直接測定料(liao)(liao)帶的(de)(de)(de)(de)(de)實(shi)(shi)踐(jian)張(zhang)(zhang)(zhang)(zhang)(zhang)力(li)(li)(li)(li)(li)值(zhi)，然(ran)后(hou)把張(zhang)(zhang)(zhang)(zhang)(zhang)力(li)(li)(li)(li)(li)數據轉(zhuan)換成張(zhang)(zhang)(zhang)(zhang)(zhang)力(li)(li)(li)(li)(li)信(xin)(xin)號(hao)反(fan)應回張(zhang)(zhang)(zhang)(zhang)(zhang)力(li)(li)(li)(li)(li)操(cao)(cao)(cao)(cao)(cao)控(kong)(kong)(kong)(kong)(kong)器，經(jing)過此信(xin)(xin)號(hao)與(yu)操(cao)(cao)(cao)(cao)(cao)控(kong)(kong)(kong)(kong)(kong)器預(yu)先(xian)設(she)(she)定的(de)(de)(de)(de)(de)張(zhang)(zhang)(zhang)(zhang)(zhang)力(li)(li)(li)(li)(li)值(zhi)比照，核算出操(cao)(cao)(cao)(cao)(cao)控(kong)(kong)(kong)(kong)(kong)信(xin)(xin)號(hao)，自(zi)(zi)動(dong)(dong)操(cao)(cao)(cao)(cao)(cao)控(kong)(kong)(kong)(kong)(kong)履行單(dan)元則使實(shi)(shi)踐(jian)張(zhang)(zhang)(zhang)(zhang)(zhang)力(li)(li)(li)(li)(li)值(zhi)與(yu)預(yu)設(she)(she)張(zhang)(zhang)(zhang)(zhang)(zhang)力(li)(li)(li)(li)(li)值(zhi)持平，以(yi)到達張(zhang)(zhang)(zhang)(zhang)(zhang)力(li)(li)(li)(li)(li)安穩(wen)意(yi)圖(tu)(tu)。它(ta)是(shi)(shi)當(dang)前較(jiao)為的(de)(de)(de)(de)(de)張(zhang)(zhang)(zhang)(zhang)(zhang)力(li)(li)(li)(li)(li)操(cao)(cao)(cao)(cao)(cao)控(kong)(kong)(kong)(kong)(kong)辦法。凹印機張(zhang)(zhang)(zhang)(zhang)(zhang)力(li)(li)(li)(li)(li)操(cao)(cao)(cao)(cao)(cao)控(kong)(kong)(kong)(kong)(kong)根(gen)本上分(fen)手(shou)(shou)動(dong)(dong)張(zhang)(zhang)(zhang)(zhang)(zhang)力(li)(li)(li)(li)(li)操(cao)(cao)(cao)(cao)(cao)控(kong)(kong)(kong)(kong)(kong)，開(kai)(kai)環(huan)式(shi)半自(zi)(zi)動(dong)(dong)張(zhang)(zhang)(zhang)(zhang)(zhang)力(li)(li)(li)(li)(li)操(cao)(cao)(cao)(cao)(cao)控(kong)(kong)(kong)(kong)(kong)和閉環(huan)式(shi)全自(zi)(zi)動(dong)(dong)張(zhang)(zhang)(zhang)(zhang)(zhang)力(li)(li)(li)(li)(li)操(cao)(cao)(cao)(cao)(cao)控(kong)(kong)(kong)(kong)(kong)三大類。手(shou)(shou)動(dong)(dong)張(zhang)(zhang)(zhang)(zhang)(zhang)力(li)(li)(li)(li)(li)操(cao)(cao)(cao)(cao)(cao)控(kong)(kong)(kong)(kong)(kong)就(jiu)是(shi)(shi)在(zai)收(shou)卷(juan)(juan)(juan)或放(fang)(fang)卷(juan)(juan)(juan)過程(cheng)中，當(dang)卷(juan)(juan)(juan)徑(jing)(jing)改變(bian)到某一期間，由操(cao)(cao)(cao)(cao)(cao)作(zuo)者調理(li)手(shou)(shou)動(dong)(dong)電源設(she)(she)備，然(ran)后(hou)到達操(cao)(cao)(cao)(cao)(cao)控(kong)(kong)(kong)(kong)(kong)張(zhang)(zhang)(zhang)(zhang)(zhang)力(li)(li)(li)(li)(li)的(de)(de)(de)(de)(de)意(yi)圖(tu)(tu)。不過現(xian)代凹印機手(shou)(shou)動(dong)(dong)張(zhang)(zhang)(zhang)(zhang)(zhang)力(li)(li)(li)(li)(li)操(cao)(cao)(cao)(cao)(cao)控(kong)(kong)(kong)(kong)(kong)體系已根(gen)本被篩選，而只是(shi)(shi)作(zuo)為閉環(huan)式(shi)全自(zi)(zi)動(dong)(dong)張(zhang)(zhang)(zhang)(zhang)(zhang)力(li)(li)(li)(li)(li)操(cao)(cao)(cao)(cao)(cao)控(kong)(kong)(kong)(kong)(kong)體系中的(de)(de)(de)(de)(de)一種操(cao)(cao)(cao)(cao)(cao)作(zuo)形式(shi)存(cun)在(zai)。開(kai)(kai)環(huan)式(shi)半自(zi)(zi)動(dong)(dong)張(zhang)(zhang)(zhang)(zhang)(zhang)力(li)(li)(li)(li)(li)操(cao)(cao)(cao)(cao)(cao)控(kong)(kong)(kong)(kong)(kong)又(you)稱卷(juan)(juan)(juan)徑(jing)(jing)檢測式(shi)張(zhang)(zhang)(zhang)(zhang)(zhang)力(li)(li)(li)(li)(li)操(cao)(cao)(cao)(cao)(cao)控(kong)(kong)(kong)(kong)(kong)，它(ta)是(shi)(shi)用安裝(zhuang)在(zai)卷(juan)(juan)(juan)軸(zhou)處的(de)(de)(de)(de)(de)挨近開(kai)(kai)關、檢測出卷(juan)(juan)(juan)軸(zhou)的(de)(de)(de)(de)(de)轉(zhuan)速，并經(jing)過所設(she)(she)定的(de)(de)(de)(de)(de)卷(juan)(juan)(juan)軸(zhou)直徑(jing)(jing)初始值(zhi)和資料(liao)(liao)厚度(du)(du)，累積核算求(qiu)得收(shou)卷(juan)(juan)(juan)或放(fang)(fang)卷(juan)(juan)(juan)筒當(dang)時的(de)(de)(de)(de)(de)直徑(jing)(jing)，相應卷(juan)(juan)(juan)徑(jing)(jing)的(de)(de)(de)(de)(de)改變(bian)輸出操(cao)(cao)(cao)(cao)(cao)控(kong)(kong)(kong)(kong)(kong)信(xin)(xin)號(hao)，以(yi)操(cao)(cao)(cao)(cao)(cao)控(kong)(kong)(kong)(kong)(kong)收(shou)卷(juan)(juan)(juan)轉(zhuan)矩或放(fang)(fang)卷(juan)(juan)(juan)制動(dong)(dong)轉(zhuan)矩，然(ran)后(hou)調整料(liao)(liao)帶的(de)(de)(de)(de)(de)張(zhang)(zhang)(zhang)(zhang)(zhang)力(li)(li)(li)(li)(li)。因(yin)為卷(juan)(juan)(juan)軸(zhou)每(mei)轉(zhuan)一圈，卷(juan)(juan)(juan)徑(jing)(jing)會發(fa)作(zuo)2倍于料(liao)(liao)帶厚度(du)(du)的(de)(de)(de)(de)(de)改變(bian)。