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在zai擠ji出chu生sheng產chan線xian中zhong,熔rong體ti壓ya力li傳chuan感gan器qi在zai提ti高gao熔rong體ti質zhi量liang,提ti高gao生sheng產chan的de安an全quan性xing以yi及ji保bao護hu生sheng產chan設she備bei等deng方fang麵mian都dou發fa揮hui著zhe重zhong要yao的de作zuo用yong。同tong時shi,熔rong體ti壓ya力li傳chuan感gan器qi又you是shi非fei常chang敏min感gan的de元yuan件jian,隻zhi有you適shi當dang的de安an裝zhuang和he維wei護hu才cai能neng使shi其qi作zuo用yong得de到dao充chong分fen的de發fa揮hui。
在擠出生產過程中,產品的一些質量標準(如尺寸精度或加入礦物填料製件的表麵平整度等)都(dou)要(yao)求(qiu)對(dui)擠(ji)出(chu)壓(ya)力(li)進(jin)行(xing)最(zui)優(you)化(hua)的(de)控(kong)製(zhi),熔(rong)體(ti)壓(ya)力(li)傳(chuan)感(gan)器(qi)是(shi)實(shi)現(xian)這(zhe)一(yi)要(yao)求(qiu)的(de)重(zhong)要(yao)元(yuan)件(jian)。通(tong)過(guo)在(zai)模(mo)具(ju)入(ru)口(kou)連(lian)接(jie)處(chu)設(she)置(zhi)熔(rong)體(ti)壓(ya)力(li)傳(chuan)感(gan)器(qi)和(he)壓(ya)力(li)控(kong)製(zhi)裝(zhuang)置(zhi),能(neng)夠(gou)使(shi)產(chan)率(lv)更(geng)穩(wen)定(ding),同(tong)時(shi)減(jian)少(shao)材(cai)料(liao)的(de)浪(lang)費(fei)。熔(rong)體(ti)壓(ya)力(li)傳(chuan)感(gan)器(qi)在(zai)提(ti)高(gao)熔(rong)體(ti)質(zhi)量(liang),提(ti)高(gao)生(sheng)產(chan)的(de)安(an)全(quan)性(xing)以(yi)及(ji)保(bao)護(hu)生(sheng)產(chan)設(she)備(bei)並(bing)延(yan)長(chang)其(qi)使(shi)用(yong)壽(shou)命(ming)等(deng)方(fang)麵(mian)都(dou)發(fa)揮(hui)著(zhe)重(zhong)要(yao)的(de)作(zuo)用(yong)。
另ling外wai,測ce量liang穿chuan過guo濾lv網wang和he熔rong體ti泵beng的de壓ya力li對dui於yu保bao證zheng生sheng產chan的de安an全quan性xing以yi及ji優you化hua設she備bei的de性xing能neng也ye是shi十shi分fen重zhong要yao的de。如ru果guo熔rong體ti流liu入ru模mo具ju時shi受shou阻zu,濾lv網wang下xia麵mian的de傳chuan感gan器qi將jiang發fa出chu警jing報bao提ti示shi操cao作zuo者zhe。當dang濾lv網wang上shang遊you的de傳chuan感gan器qi發fa出chu警jing報bao時shi,表biao明ming擠ji出chu機ji內nei部bu壓ya力li過guo高gao,可ke能neng會hui對dui螺luo杆gan產chan生sheng過guo度du的de磨mo損sun。對dui於yu應ying用yong熔rong體ti泵beng的de生sheng產chan商shang而er言yan,需xu要yao測ce量liang熔rong體ti的de進jin口kou壓ya力li和he出chu口kou壓ya力li,以yi確que保bao熔rong體ti能neng夠gou連lian續xu地di流liu入ru到dao模mo具ju中zhong,因yin為wei任ren何he阻zu礙ai作zuo用yong都dou可ke能neng導dao致zhi熔rong體ti泵beng受shou損sun。
在zai擠ji出chu生sheng產chan線xian上shang裝zhuang配pei的de熔rong體ti壓ya力li傳chuan感gan器qi可ke以yi是shi僅jin測ce量liang一yi個ge點dian壓ya力li的de單dan個ge傳chuan感gan器qi,也ye可ke以yi是shi一yi係xi列lie用yong以yi測ce量liang整zheng個ge生sheng產chan線xian的de傳chuan感gan器qi。熔rong體ti壓ya力li傳chuan感gan器qi與yu數shu據ju記ji錄lu儀yi、聲(sheng)音(yin)報(bao)警(jing)裝(zhuang)置(zhi)相(xiang)連(lian),利(li)用(yong)加(jia)工(gong)控(kong)製(zhi)係(xi)統(tong)可(ke)以(yi)調(tiao)整(zheng)擠(ji)出(chu)機(ji)的(de)加(jia)工(gong)參(can)數(shu)。同(tong)時(shi),壓(ya)力(li)傳(chuan)感(gan)器(qi)也(ye)是(shi)非(fei)常(chang)靈(ling)敏(min)的(de)元(yuan)件(jian),如(ru)果(guo)得(de)不(bu)到(dao)正(zheng)確(que)的(de)安(an)裝(zhuang)和(he)維(wei)護(hu),就(jiu)非(fei)常(chang)容(rong)易(yi)損(sun)壞(huai)。以(yi)下(xia)介(jie)紹(shao)的(de)幾(ji)個(ge)簡(jian)單(dan)方(fang)法(fa)有(you)利(li)於(yu)延(yan)長(chang)壓(ya)力(li)傳(chuan)感(gan)器(qi)的(de)使(shi)用(yong)壽(shou)命(ming),同(tong)時(shi)能(neng)夠(gou)幫(bang)助(zhu)使(shi)用(yong)者(zhe)得(de)到(dao)準(zhun)確(que)可(ke)靠(kao)的(de)測(ce)量(liang)結(jie)果(guo)。
● 正確安裝 通tong常chang壓ya力li傳chuan感gan器qi的de損sun壞huai都dou是shi由you於yu其qi安an裝zhuang位wei置zhi不bu恰qia當dang而er引yin起qi的de。如ru果guo將jiang傳chuan感gan器qi強qiang行xing安an裝zhuang在zai過guo小xiao的de孔kong或huo形xing狀zhuang不bu規gui則ze的de孔kong中zhong,就jiu有you可ke能neng造zao成cheng傳chuan感gan器qi的de震zhen動dong膜mo受shou到dao衝chong擊ji而er損sun壞huai。選xuan擇ze合he適shi的de工gong具ju加jia工gong安an裝zhuang孔kong,有you利li於yu控kong製zhi安an裝zhuang孔kong的de尺chi寸cun。另ling外wai,合he適shi的de安an裝zhuang扭niu矩ju有you利li於yu形xing成cheng良liang好hao的de密mi封feng。但dan是shi如ru果guo安an裝zhuang扭niu矩ju過guo高gao就jiu容rong易yi引yin起qi傳chuan感gan器qi的de滑hua脫tuo,為wei防fang止zhi這zhe種zhong現xian象xiang發fa生sheng,通tong常chang在zai傳chuan感gan器qi安an裝zhuang之zhi前qian在zai其qi螺luo紋wen部bu分fen上shang塗tu抹mo防fang脫tuo化hua合he物wu。在zai使shi用yong這zhe種zhong化hua合he物wu以yi後hou,即ji使shi安an裝zhuang扭niu矩ju很hen高gao,傳chuan感gan器qi也ye很hen難nan被bei移yi動dong。
● 檢查安裝孔的尺寸 ruguoanzhuangkongdechicunbuheshi,chuanganqizaianzhuangguochengzhong,qiluowenbufenjiuhenrongyishoudaomosun。zhebujinhuiyingxiangshebeidemifengxingneng,erqieshichuanganqibunengchongfenfahuizuoyong,shenzhihaikenengchanshenganquanyinhuan。zhiyouheshideanzhuangkongcainenggoubimianluowendemosun(螺紋工業標準1/2-20 UNF 2B),通常可以采用安裝孔測量儀對安裝孔進行檢測,以做出適當的調整。
● 保持安裝孔的清潔 保(bao)持(chi)安(an)裝(zhuang)孔(kong)的(de)清(qing)潔(jie)並(bing)防(fang)止(zhi)熔(rong)料(liao)堵(du)塞(sai)對(dui)保(bao)證(zheng)設(she)備(bei)的(de)正(zheng)常(chang)運(yun)行(xing)來(lai)說(shuo)十(shi)分(fen)重(zhong)要(yao)。在(zai)擠(ji)出(chu)機(ji)被(bei)清(qing)潔(jie)之(zhi)前(qian),所(suo)有(you)的(de)傳(chuan)感(gan)器(qi)都(dou)應(ying)該(gai)從(cong)機(ji)筒(tong)上(shang)拆(chai)除(chu)以(yi)避(bi)免(mian)損(sun)壞(huai)。在(zai)拆(chai)除(chu)傳(chuan)感(gan)器(qi)時(shi),熔(rong)料(liao)有(you)可(ke)能(neng)流(liu)入(ru)到(dao)安(an)裝(zhuang)孔(kong)中(zhong)並(bing)硬(ying)化(hua),如(ru)果(guo)這(zhe)些(xie)殘(can)餘(yu)的(de)熔(rong)料(liao)沒(mei)有(you)被(bei)去(qu)除(chu),當(dang)再(zai)次(ci)安(an)裝(zhuang)傳(chuan)感(gan)器(qi)時(shi)就(jiu)可(ke)能(neng)造(zao)成(cheng)其(qi)頂(ding)部(bu)受(shou)損(sun)。清(qing)潔(jie)工(gong)具(ju)包(bao)能(neng)夠(gou)將(jiang)這(zhe)些(xie)熔(rong)料(liao)殘(can)餘(yu)物(wu)去(qu)除(chu)。然(ran)而(er),重(zhong)複(fu)的(de)清(qing)潔(jie)過(guo)程(cheng)有(you)可(ke)能(neng)加(jia)深(shen)安(an)裝(zhuang)孔(kong)對(dui)傳(chuan)感(gan)器(qi)造(zao)成(cheng)的(de)損(sun)壞(huai)。如(ru)果(guo)這(zhe)種(zhong)情(qing)況(kuang)發(fa)生(sheng),就(jiu)應(ying)當(dang)采(cai)取(qu)措(cuo)施(shi)來(lai)升(sheng)高(gao)傳(chuan)感(gan)器(qi)在(zai)安(an)裝(zhuang)孔(kong)中(zhong)的(de)位(wei)置(zhi)。
● 選擇恰當的位置 當傳感器的安裝位置太靠近生產線的上遊時,未熔融的物料可能會磨損傳感器的頂部;如(ru)果(guo)傳(chuan)感(gan)器(qi)被(bei)安(an)裝(zhuang)在(zai)太(tai)靠(kao)後(hou)的(de)位(wei)置(zhi),在(zai)傳(chuan)感(gan)器(qi)和(he)螺(luo)杆(gan)行(xing)程(cheng)之(zhi)間(jian)可(ke)能(neng)會(hui)產(chan)生(sheng)熔(rong)融(rong)物(wu)料(liao)的(de)停(ting)滯(zhi)區(qu),熔(rong)料(liao)在(zai)那(na)裏(li)有(you)可(ke)能(neng)產(chan)生(sheng)降(jiang)解(jie),壓(ya)力(li)信(xin)號(hao)也(ye)可(ke)能(neng)傳(chuan)遞(di)失(shi)真(zhen);如果傳感器過於深入機筒,螺杆有可能在旋轉過程中觸碰到傳感器的頂部而造成其損壞。一般來說,傳感器可以位於濾網前麵的機筒上、熔體泵的前後或者模具中。
● 仔細清潔 在zai使shi用yong鋼gang絲si刷shua或huo者zhe特te殊shu化hua合he物wu對dui擠ji出chu機ji機ji筒tong進jin行xing清qing潔jie前qian,應ying該gai將jiang所suo有you的de傳chuan感gan器qi都dou拆chai卸xie下xia來lai。因yin為wei這zhe兩liang種zhong清qing潔jie方fang式shi都dou可ke能neng會hui造zao成cheng傳chuan感gan器qi的de震zhen動dong膜mo受shou損sun。當dang機ji筒tong被bei加jia熱re時shi,也ye應ying該gai將jiang傳chuan感gan器qi拆chai卸xie下xia來lai並bing使shi用yong不bu會hui產chan生sheng磨mo損sun的de軟ruan布bu來lai擦ca拭shi其qi頂ding部bu,同tong時shi傳chuan感gan器qi的de孔kong洞dong也ye需xu要yao用yong清qing潔jie的de鑽zuan孔kong機ji和he導dao套tao清qing理li幹gan淨jing。
● 保持幹燥 盡(jin)管(guan)傳(chuan)感(gan)器(qi)的(de)電(dian)路(lu)設(she)計(ji)能(neng)夠(gou)經(jing)受(shou)苛(ke)刻(ke)的(de)擠(ji)出(chu)加(jia)工(gong)環(huan)境(jing),但(dan)是(shi)多(duo)數(shu)傳(chuan)感(gan)器(qi)也(ye)不(bu)能(neng)絕(jue)對(dui)防(fang)水(shui),在(zai)潮(chao)濕(shi)的(de)環(huan)境(jing)下(xia)也(ye)不(bu)利(li)於(yu)正(zheng)常(chang)運(yun)行(xing)。因(yin)此(ci),需(xu)要(yao)保(bao)證(zheng)擠(ji)出(chu)機(ji)機(ji)筒(tong)的(de)水(shui)冷(leng)裝(zhuang)置(zhi)中(zhong)的(de)水(shui)不(bu)會(hui)滲(shen)漏(lou),否(fou)則(ze)會(hui)對(dui)傳(chuan)感(gan)器(qi)造(zao)成(cheng)不(bu)利(li)影(ying)響(xiang)。如(ru)果(guo)傳(chuan)感(gan)器(qi)不(bu)得(de)不(bu)暴(bao)露(lu)在(zai)水(shui)中(zhong)或(huo)潮(chao)濕(shi)的(de)環(huan)境(jing)下(xia),就(jiu)要(yao)選(xuan)擇(ze)具(ju)有(you)極(ji)強(qiang)防(fang)水(shui)性(xing)的(de)特(te)殊(shu)傳(chuan)感(gan)器(qi)。
● 避免低溫幹擾 在擠出生產過程中,對於塑料原料而言,從固體到熔融狀態應當具有充足的“浸透時間”。如(ru)果(guo)擠(ji)出(chu)機(ji)在(zai)開(kai)始(shi)進(jin)行(xing)生(sheng)產(chan)前(qian)還(hai)沒(mei)有(you)達(da)到(dao)操(cao)作(zuo)溫(wen)度(du),那(na)麼(me)傳(chuan)感(gan)器(qi)和(he)擠(ji)出(chu)機(ji)都(dou)會(hui)受(shou)到(dao)一(yi)定(ding)程(cheng)度(du)的(de)損(sun)壞(huai)。另(ling)外(wai),如(ru)果(guo)傳(chuan)感(gan)器(qi)從(cong)冷(leng)的(de)擠(ji)出(chu)機(ji)上(shang)被(bei)拆(chai)除(chu),材(cai)料(liao)就(jiu)可(ke)能(neng)粘(zhan)附(fu)在(zai)傳(chuan)感(gan)器(qi)頂(ding)部(bu)引(yin)起(qi)震(zhen)動(dong)膜(mo)的(de)損(sun)壞(huai)。因(yin)此(ci),在(zai)拆(chai)除(chu)傳(chuan)感(gan)器(qi)之(zhi)前(qian),應(ying)確(que)認(ren)機(ji)筒(tong)的(de)溫(wen)度(du)足(zu)夠(gou)高(gao),機(ji)筒(tong)內(nei)部(bu)的(de)物(wu)料(liao)處(chu)於(yu)軟(ruan)化(hua)狀(zhuang)態(tai)下(xia)。
● 防止壓力過載 即使傳感器測壓範圍的過載設計最高能夠達到50%(超出最大量程的比率),congshebeiyunxingdeanquanjiaodukaolvyeyinggaijinliangbimianmaoxian,zuihaoxuanzebeiceyalichuyuliangchengfanweizhineidechuanganqi。zaitongchangqingkuangxia,suoxuanchuanganqidezuijialiangchengyinggaishibeiceyalide2倍,這樣即使擠出機在極高的壓力下運行,也能避免傳感器受到損壞。
1、傳感器的安裝
chuanganqidemopianshizuirongyisunhuaidebuwei,zaianzhuangzhiqianqingbuyaosuiyituoluoqibaohumao,tongshizaianzhuangtongshiyaozhuyibaohuchuanganqidemopian。anzhuangkongdejiagongyaogenjuanzhuangkongchicuntujichicunbiaodejishuyaoqiujiagong,bimianyinanzhuangkongbubiaozhunyinqidemopiancashangyingxiangchuanganqizhengchanggongzuo。
2、傳感器的拆除
anzhuangshiyaobaozhengzhengquedeanzhuangkongneimeiyouyiliudejinshuyiwuhuosuliao,zaiqinglijichujizhiqianyingjiangsuoyoudechuanganqicongjiqishangchaixia。zhiyoudangjuhewuchengzhuorederongrongzhuangtaixiacainengchaixiachuanganqi,chaixiahoulijiyongruanbujiangchuanganqitantoumopiancajing。tongshishanghaihaoyingcekongjishuyouxiangongsikeyitigonganzhuangkongdezhuanyongqingjiegongjuqinglikongneidewuliaoyibianxiacianzhuang。
3、關於啟動
設備啟動前保證充分的加熱和熔化時間,以確保擠出機械工作前傳感器的膜片部位的所有物料已融化。
4、安裝位置
傳感器的探頭部分可耐高溫,可外殼耐溫在80℃yixia,suoyizaianzhuangshiyongguochengzhongyidingyaozhuyijianganzhuanghaodechuanganqiwaikebufengudingzaishiwenhuanjingzhong。waikeyugaowenquyugeliyouliyutigaochuanganqideceliangjingduheshiyongshouming。
5、過載影響
zaishijiyalikongzhiguochengzhizhong,zuihaozaiedingyalizhinei,suiranchuanganqiyouyidingdeguozainengli,dangchangshijiandeguozaijiangyingxiangchuanganqideceliangjingduheshiyongshouming。
6、變送器的電氣連接
在電氣連接過程中,變送器的信號輸出連接電纜必須單獨通過布線槽進行連接,避免現場的幹擾
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