2014
-
07
-
01
點(dian)擊(ji)次(ci)數:
922
一(yi)(yi)、針(zhen)(zhen)(zhen)織(zhi)(zhi)(zhi)大(da)(da)圓(yuan)機(ji)(ji)(ji)工藝介紹1.針(zhen)(zhen)(zhen)織(zhi)(zhi)(zhi)大(da)(da)圓(yuan)機(ji)(ji)(ji)簡(jian)介 針(zhen)(zhen)(zhen)織(zhi)(zhi)(zhi)大(da)(da)圓(yuan)機(ji)(ji)(ji)（如(ru)圖(tu)1）是(shi)一(yi)(yi)種(zhong)將棉紗織(zhi)(zhi)(zhi)成筒狀布(bu)的(de)(de)設備，主要(yao)(yao)(yao)用(yong)于編織(zhi)(zhi)(zhi)各(ge)類起絨針(zhen)(zhen)(zhen)織(zhi)(zhi)(zhi)物、T恤(xu)面(mian)(mian)(mian)料、各(ge)類具有(you)(you)孔眼的(de)(de)花紋織(zhi)(zhi)(zhi)物等。按結構可(ke)(ke)(ke)分為單面(mian)(mian)(mian)大(da)(da)圓(yuan)機(ji)(ji)(ji)和雙(shuang)面(mian)(mian)(mian)大(da)(da)圓(yuan)機(ji)(ji)(ji)，在紡織(zhi)(zhi)(zhi)行(xing)(xing)業(ye)(ye)應(ying)(ying)用(yong)廣泛。 2.工藝要(yao)(yao)(yao)求(qiu)(qiu)（1）要(yao)(yao)(yao)求(qiu)(qiu)變(bian)頻(pin)(pin)器(qi)耐(nai)環境(jing)能(neng)(neng)力強，因(yin)(yin)現(xian)場工作(zuo)環境(jing)溫度(du)較(jiao)高(gao)，且(qie)棉絮容易(yi)造成散熱風扇堵(du)轉、損壞，散熱孔堵(du)塞。（2）要(yao)(yao)(yao)求(qiu)(qiu)有(you)(you)靈活的(de)(de)點(dian)(dian)動(dong)運(yun)行(xing)(xing)功(gong)能(neng)(neng)，設備多處安裝有(you)(you)點(dian)(dian)動(dong)按鈕(niu)，要(yao)(yao)(yao)求(qiu)(qiu)變(bian)頻(pin)(pin)器(qi)響應(ying)(ying)速(su)(su)(su)度(du)快(kuai)。（3）在速(su)(su)(su)度(du)控制(zhi)(zhi)(zhi)上要(yao)(yao)(yao)求(qiu)(qiu)有(you)(you)三(san)個速(su)(su)(su)度(du)，一(yi)(yi)是(shi)點(dian)(dian)動(dong)運(yun)行(xing)(xing)速(su)(su)(su)度(du)，通常6Hz左(zuo)右；二是(shi)正(zheng)常織(zhi)(zhi)(zhi)布(bu)速(su)(su)(su)度(du)，最高(gao)頻(pin)(pin)率(lv)(lv)可(ke)(ke)(ke)達(da)70Hz；三(san)是(shi)低(di)速(su)(su)(su)收(shou)布(bu)運(yun)行(xing)(xing)，需(xu)要(yao)(yao)(yao)20Hz左(zuo)右頻(pin)(pin)率(lv)(lv)。（4）在大(da)(da)圓(yuan)機(ji)(ji)(ji)的(de)(de)運(yun)轉中，絕對禁止(zhi)電機(ji)(ji)(ji)反轉和回(hui)轉現(xian)象，否則針(zhen)(zhen)(zhen)床的(de)(de)針(zhen)(zhen)(zhen)將被折(zhe)彎(wan)或(huo)折(zhe)斷，如(ru)果是(shi)采用(yong)了單相軸承的(de)(de)大(da)(da)圓(yuan)機(ji)(ji)(ji)可(ke)(ke)(ke)不(bu)予考慮，如(ru)果系統正(zheng)反轉完全取決于電機(ji)(ji)(ji)的(de)(de)正(zheng)反轉，則一(yi)(yi)方(fang)(fang)面(mian)(mian)(mian)需(xu)要(yao)(yao)(yao)能(neng)(neng)禁止(zhi)反轉，另一(yi)(yi)方(fang)(fang)面(mian)(mian)(mian)需(xu)要(yao)(yao)(yao)設置直流(liu)制(zhi)(zhi)(zhi)動(dong)消除回(hui)轉。二、現(xian)場要(yao)(yao)(yao)求(qiu)(qiu)及調試方(fang)(fang)案1.現(xian)場要(yao)(yao)(yao)求(qiu)(qiu) 大(da)(da)圓(yuan)機(ji)(ji)(ji)行(xing)(xing)業(ye)(ye)對于變(bian)頻(pin)(pin)器(qi)的(de)(de)控制(zhi)(zhi)(zhi)功(gong)能(neng)(neng)要(yao)(yao)(yao)求(qiu)(qiu)較(jiao)為簡(jian)練(lian),一(yi)(yi)般接端子控制(zhi)(zhi)(zhi)起停,模擬量給定(ding)(ding)頻(pin)(pin)率(lv)(lv)或(huo)者(zhe)使用(yong)多段速(su)(su)(su)給定(ding)(ding)頻(pin)(pin)率(lv)(lv)。要(yao)(yao)(yao)求(qiu)(qiu)點(dian)(dian)動(dong)或(huo)者(zhe)低(di)速(su)(su)(su)運(yun)轉要(yao)(yao)(yao)快(kuai)速(su)(su)(su),因(yin)(yin)此要(yao)(yao)(yao)求(qiu)(qiu)變(bian)頻(pin)(pin)器(qi)能(neng)(neng)夠控制(zhi)(zhi)(zhi)電機(ji)(ji)(ji)低(di)頻(pin)(pin)時(shi)產生較(jiao)大(da)(da)的(de)(de)低(di)頻(pin)(pin)轉矩。一(yi)(yi)般在大(da)(da)圓(yuan)機(ji)(ji)(ji)應(ying)(ying)用(yong)上,變(bian)頻(pin)(pin)器(qi)以V/F模式就可(ke)(ke)(ke)以滿足。2.調試方(fang)(fang)...