橡膠輥的(de)(de)可紡(fang)性一直是棉紡(fang)企(qi)業關注的(de)(de)焦點,它(ta)直接影響產品質量(liang),也是造成(cheng)紗線不勻率高(gao)和許多常(chang)規疵點的(de)(de)關鍵因素之一。橡膠輥的(de)(de)選擇(ze)、制造、表(biao)面處理(li)和維護(hu)對企(qi)業也非常(chang)重要。
橡膠輥按(an)硬度分類:一般可分為(wei)高硬度、中(zhong)硬度和低硬度(彈性更好)橡膠輥。
普通棉紡可選用70~80度(du)(du)(du)(du)(du)(du)(du)橡膠(jiao)(jiao)(jiao)(jiao)輥(gun)進行粗紗(sha)(sha)紡紗(sha)(sha)。化纖紡絲時(shi),橡膠(jiao)(jiao)(jiao)(jiao)輥(gun)的(de)硬度(du)(du)(du)(du)(du)(du)(du)應(ying)根(gen)據品種(zhong)、紗(sha)(sha)線厚度(du)(du)(du)(du)(du)(du)(du)和質量(liang)要求進行選擇。對于(yu)高支紗(sha)(sha)線,硬度(du)(du)(du)(du)(du)(du)(du)應(ying)易于(yu)掌握。一(yi)般選用80度(du)(du)(du)(du)(du)(du)(du)左右(you)的(de)橡膠(jiao)(jiao)(jiao)(jiao)輥(gun)牽(qian)伸(shen)棉,牽(qian)伸(shen)速度(du)(du)(du)(du)(du)(du)(du)快時(shi)硬度(du)(du)(du)(du)(du)(du)(du)可適當(dang)提高;通常(chang)選擇85度(du)(du)(du)(du)(du)(du)(du)左右(you)的(de)橡膠(jiao)(jiao)(jiao)(jiao)輥(gun)紡化纖和混紡品種(zhong);精梳時(shi),分離橡膠(jiao)(jiao)(jiao)(jiao)輥(gun)的(de)硬度(du)(du)(du)(du)(du)(du)(du)一(yi)般為65-70度(du)(du)(du)(du)(du)(du)(du),導向(xiang)橡膠(jiao)(jiao)(jiao)(jiao)輥(gun)為85度(du)(du)(du)(du)(du)(du)(du),牽(qian)伸(shen)前的(de)******和第二橡膠(jiao)(jiao)(jiao)(jiao)輥(gun)一(yi)般為65-70度(du)(du)(du)(du)(du)(du)(du),后橡膠(jiao)(jiao)(jiao)(jiao)輥(gun)為85度(du)(du)(du)(du)(du)(du)(du)。當(dang)拉(la)(la)伸(shen)速度(du)(du)(du)(du)(du)(du)(du)相對較(jiao)高時(shi),選擇硬度(du)(du)(du)(du)(du)(du)(du)較(jiao)高的(de)橡橡膠(jiao)(jiao)(jiao)(jiao)輥(gun),否則在高速運(yun)行時(shi)容易發生變形疲(pi)勞(lao),并且由于(yu)加熱會發生靜電(dian)條紋。通常(chang),當(dang)拉(la)(la)伸(shen)速度(du)(du)(du)(du)(du)(du)(du)高時(shi),選擇80-85度(du)(du)(du)(du)(du)(du)(du)的(de)橡橡膠(jiao)(jiao)(jiao)(jiao)輥(gun)。
紡高支純棉紗線時,一般選用軟橡膠輥,紡粗支純棉紗線和滌棉紗線時選用中硬橡膠輥,紡化纖時采用硬橡膠輥,牽伸時可選用硬橡膠輥,約80-82度。
在(zai)相同的(de)(de)(de)搖架壓力(li)(li)和(he)紡紗(sha)條(tiao)(tiao)件下(xia),彈性越(yue)高(gao),條(tiao)(tiao)子與橡膠(jiao)(jiao)輥(gun)(gun)(gun)和(he)羅拉(la)之間的(de)(de)(de)接觸面積越(yue)大(da),保(bao)持力(li)(li)越(yue)好、越(yue)均勻。相反,棉條(tiao)(tiao)和(he)紡紗(sha)橡膠(jiao)(jiao)輥(gun)(gun)(gun)之間的(de)(de)(de)接觸越(yue)小(xiao),夾持力(li)(li)就越(yue)不均勻,結和(he)細節就越(yue)粗糙(cao),棉條(tiao)(tiao)桿就越(yue)不穩(wen)定。由于高(gao)彈性橡膠(jiao)(jiao)輥(gun)(gun)(gun)與羅拉(la)的(de)(de)(de)接觸面積大(da),紗(sha)線變(bian)速點(dian)向(xiang)后移動(dong)(dong),減小(xiao)了(le)浮(fu)動(dong)(dong)區的(de)(de)(de)長度,更有效地控(kong)制了(le)浮(fu)動(dong)(dong)纖維(wei)的(de)(de)(de)移動(dong)(dong),提高(gao)了(le)紗(sha)線質量。另一方面,高(gao)彈性橡膠(jiao)(jiao)輥(gun)(gun)(gun)彈性恢復快,橡膠(jiao)(jiao)輥(gun)(gun)(gun)控(kong)制纖維(wei)向(xiang)前(qian)移動(dong)(dong),延長了(le)紗(sha)條(tiao)(tiao)在(zai)橡膠(jiao)(jiao)輥(gun)(gun)(gun)上的(de)(de)(de)控(kong)制時間,降低了(le)斷裂率。
由(you)于其運動(間歇(xie)往復旋轉)的(de)(de)特(te)殊性(xing)(xing),精(jing)梳分離(li)橡(xiang)(xiang)膠(jiao)(jiao)(jiao)輥(gun)要(yao)求(qiu)橡(xiang)(xiang)膠(jiao)(jiao)(jiao)輥(gun)能有效夾持纖維(wei),并具有防粘(zhan)連、防起花(hua)和(he)防纏(chan)繞(rao)的(de)(de)要(yao)求(qiu)。因(yin)此(ci)(ci),應(ying)選(xuan)擇彈性(xing)(xing)高、硬(ying)(ying)(ying)度(du)(du)(du)低(di)(65~75度(du)(du)(du))、彈性(xing)(xing)回復能力(li)快且好(hao)(hao)(hao)、耐(nai)磨性(xing)(xing)好(hao)(hao)(hao)、抗(kang)纏(chan)繞(rao)能力(li)強(qiang)的(de)(de)嬰兒床(chuang)。精(jing)梳牽(qian)(qian)(qian)伸(shen)(shen)橡(xiang)(xiang)膠(jiao)(jiao)(jiao)輥(gun)表(biao)面(mian)線速度(du)(du)(du)高(100米/分鐘以上),對棉(mian)條干燥要(yao)求(qiu)較高,精(jing)梳機牽(qian)(qian)(qian)伸(shen)(shen)部分清潔器常(chang)見(jian)缺陷容易造成卷繞(rao)。因(yin)此(ci)(ci),精(jing)梳牽(qian)(qian)(qian)伸(shen)(shen)應(ying)選(xuan)用硬(ying)(ying)(ying)度(du)(du)(du)中(zhong)等(deng)(70~75度(du)(du)(du))且彈性(xing)(xing)好(hao)(hao)(hao)的(de)(de)橡(xiang)(xiang)膠(jiao)(jiao)(jiao)輥(gun)。牽(qian)(qian)(qian)伸(shen)(shen)橡(xiang)(xiang)膠(jiao)(jiao)(jiao)輥(gun)應(ying)具有良(liang)好(hao)(hao)(hao)的(de)(de)抗(kang)纏(chan)繞(rao)性(xing)(xing)、較強(qiang)的(de)(de)耐(nai)磨性(xing)(xing)、耐(nai)熱性(xing)(xing)和(he)耐(nai)油(you)性(xing)(xing),以及(ji)中(zhong)高硬(ying)(ying)(ying)度(du)(du)(du)(78~85度(du)(du)(du))。粗紗牽(qian)(qian)(qian)伸(shen)(shen)橡(xiang)(xiang)膠(jiao)(jiao)(jiao)輥(gun)應(ying)為(wei)雙層或鋁襯橡(xiang)(xiang)膠(jiao)(jiao)(jiao)輥(gun),具有良(liang)好(hao)(hao)(hao)的(de)(de)卷繞(rao)阻力(li)、彈性(xing)(xing)、強(qiang)抓力(li)、中(zhong)等(deng)硬(ying)(ying)(ying)度(du)(du)(du)(72-78度(du)(du)(du))和(he)良(liang)好(hao)(hao)(hao)的(de)(de)耐(nai)磨性(xing)(xing)。紡紗應(ying)選(xuan)用中(zhong)低(di)硬(ying)(ying)(ying)度(du)(du)(du)(63~75度(du)(du)(du),純化(hua)纖產品75~83度(du)(du)(du))和(he)高彈性(xing)(xing)橡(xiang)(xiang)膠(jiao)(jiao)(jiao)輥(gun)。
keyword:橡膠輥
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