2014
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07
-
01
點擊次(ci)數:
922
一(yi)、針(zhen)(zhen)(zhen)織(zhi)(zhi)大(da)(da)(da)(da)(da)圓(yuan)(yuan)機(ji)工(gong)藝介紹(shao)1.針(zhen)(zhen)(zhen)織(zhi)(zhi)大(da)(da)(da)(da)(da)圓(yuan)(yuan)機(ji)簡(jian)介 針(zhen)(zhen)(zhen)織(zhi)(zhi)大(da)(da)(da)(da)(da)圓(yuan)(yuan)機(ji)（如圖1）是(shi)(shi)一(yi)種將(jiang)(jiang)棉(mian)紗(sha)織(zhi)(zhi)成筒狀布的設(she)備(bei)，主要用(yong)于編(bian)織(zhi)(zhi)各類起絨(rong)針(zhen)(zhen)(zhen)織(zhi)(zhi)物、T恤(xu)面(mian)料、各類具有孔眼的花紋織(zhi)(zhi)物等。按(an)結構可分(fen)為單(dan)面(mian)大(da)(da)(da)(da)(da)圓(yuan)(yuan)機(ji)和雙面(mian)大(da)(da)(da)(da)(da)圓(yuan)(yuan)機(ji)，在(zai)(zai)(zai)紡織(zhi)(zhi)行(xing)(xing)業應用(yong)廣泛(fan)。 2.工(gong)藝要求(qiu)(qiu)(qiu)（1）要求(qiu)(qiu)(qiu)變(bian)(bian)(bian)頻(pin)器(qi)耐環境能(neng)(neng)(neng)力(li)強，因現(xian)場工(gong)作(zuo)環境溫度(du)(du)較(jiao)高(gao)，且棉(mian)絮容易造成散(san)熱風扇堵轉、損壞，散(san)熱孔堵塞。（2）要求(qiu)(qiu)(qiu)有靈活(huo)的點(dian)(dian)(dian)(dian)動(dong)運(yun)行(xing)(xing)功能(neng)(neng)(neng)，設(she)備(bei)多處安裝有點(dian)(dian)(dian)(dian)動(dong)按(an)鈕，要求(qiu)(qiu)(qiu)變(bian)(bian)(bian)頻(pin)器(qi)響應速(su)度(du)(du)快。（3）在(zai)(zai)(zai)速(su)度(du)(du)控(kong)制上(shang)要求(qiu)(qiu)(qiu)有三(san)(san)個速(su)度(du)(du)，一(yi)是(shi)(shi)點(dian)(dian)(dian)(dian)動(dong)運(yun)行(xing)(xing)速(su)度(du)(du)，通常(chang)6Hz左右(you)；二(er)是(shi)(shi)正(zheng)(zheng)常(chang)織(zhi)(zhi)布速(su)度(du)(du)，最(zui)高(gao)頻(pin)率(lv)可達70Hz；三(san)(san)是(shi)(shi)低(di)(di)速(su)收布運(yun)行(xing)(xing)，需(xu)要20Hz左右(you)頻(pin)率(lv)。（4）在(zai)(zai)(zai)大(da)(da)(da)(da)(da)圓(yuan)(yuan)機(ji)的運(yun)轉中，絕對禁止電(dian)機(ji)反(fan)轉和回轉現(xian)象，否則針(zhen)(zhen)(zhen)床的針(zhen)(zhen)(zhen)將(jiang)(jiang)被(bei)折彎或折斷，如果是(shi)(shi)采用(yong)了單(dan)相軸承的大(da)(da)(da)(da)(da)圓(yuan)(yuan)機(ji)可不予考慮，如果系統正(zheng)(zheng)反(fan)轉完全(quan)取決(jue)于電(dian)機(ji)的正(zheng)(zheng)反(fan)轉，則一(yi)方(fang)(fang)面(mian)需(xu)要能(neng)(neng)(neng)禁止反(fan)轉，另一(yi)方(fang)(fang)面(mian)需(xu)要設(she)置直流(liu)制動(dong)消(xiao)除回轉。二(er)、現(xian)場要求(qiu)(qiu)(qiu)及調試(shi)方(fang)(fang)案(an)1.現(xian)場要求(qiu)(qiu)(qiu) 大(da)(da)(da)(da)(da)圓(yuan)(yuan)機(ji)行(xing)(xing)業對于變(bian)(bian)(bian)頻(pin)器(qi)的控(kong)制功能(neng)(neng)(neng)要求(qiu)(qiu)(qiu)較(jiao)為簡(jian)練,一(yi)般(ban)接端(duan)子控(kong)制起停,模擬量給定(ding)頻(pin)率(lv)或者使用(yong)多段速(su)給定(ding)頻(pin)率(lv)。要求(qiu)(qiu)(qiu)點(dian)(dian)(dian)(dian)動(dong)或者低(di)(di)速(su)運(yun)轉要快速(su),因此要求(qiu)(qiu)(qiu)變(bian)(bian)(bian)頻(pin)器(qi)能(neng)(neng)(neng)夠控(kong)制電(dian)機(ji)低(di)(di)頻(pin)時產生較(jiao)大(da)(da)(da)(da)(da)的低(di)(di)頻(pin)轉矩。一(yi)般(ban)在(zai)(zai)(zai)大(da)(da)(da)(da)(da)圓(yuan)(yuan)機(ji)應用(yong)上(shang),變(bian)(bian)(bian)頻(pin)器(qi)以V/F模式就(jiu)可以滿(man)足。2.調試(shi)方(fang)(fang)...