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
如(ru)果(guo)安(an)裝(zhuang)孔(kong)的(de)尺(chi)寸(cun)不(bu)合(he)適(shi),傳(chuan)感(gan)器(qi)在(zai)安(an)裝(zhuang)過(guo)程(cheng)中(zhong),其(qi)螺(luo)紋(wen)部(bu)分(fen)就(jiu)很(hen)容(rong)易(yi)受(shou)到(dao)磨(mo)損(sun)。這(zhe)不(bu)僅(jin)會(hui)影(ying)響(xiang)設(she)備(bei)的(de)密(mi)封(feng)性(xing)能(neng),而(er)且(qie)使(shi)傳(chuan)感(gan)器(qi)不(bu)能(neng)充(chong)分(fen)發(fa)揮(hui)作(zuo)用(yong),甚(shen)至(zhi)還(hai)可(ke)能(neng)產(chan)生(sheng)安(an)全(quan)隱(yin)患(huan)。隻(zhi)有(you)合(he)適(shi)的(de)安(an)裝(zhuang)孔(kong)才(cai)能(neng)夠(gou)避(bi)免(mian)螺(luo)紋(wen)的(de)磨(mo)損(sun)(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;ruguochuanganqibeianzhuangzaitaikaohoudeweizhi,zaichuanganqiheluoganxingchengzhijiankenenghuichanshengrongrongwuliaodetingzhiqu,rongliaozainaliyoukenengchanshengjiangjie,yalixinhaoyekenengchuandishizhen;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
zaishiyonggangsishuahuozheteshuhuahewuduijichujijitongjinxingqingjieqian,yinggaijiangsuoyoudechuanganqidouchaixiexialai。yinweizheliangzhongqingjiefangshidoukenenghuizaochengchuanganqidezhendongmoshousun。dangjitongbeijiareshi,yeyinggaijiangchuanganqichaixiexialaibingshiyongbuhuichanshengmosunderuanbulaicashiqidingbu,tongshichuanganqidekongdongyexuyaoyongqingjiedezuankongjihedaotaoqingliganjing。
● 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),從cong設she備bei運yun行xing的de安an全quan角jiao度du考kao慮lv也ye應ying該gai盡jin量liang避bi免mian冒mao險xian,最zui好hao選xuan擇ze被bei測ce壓ya力li處chu於yu量liang程cheng範fan圍wei之zhi內nei的de傳chuan感gan器qi。在zai通tong常chang情qing況kuang下xia,所suo選xuan傳chuan感gan器qi的de最zui佳jia量liang程cheng應ying該gai是shi被bei測ce壓ya力li的de2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。孝感市五嶽傳感器有限公司