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zaijichushengchanxianzhong,rongtiyalichuanganqizaitigaorongtizhiliang,tigaoshengchandeanquanxingyijibaohushengchanshebeidengfangmiandoufahuizhezhongyaodezuoyong。tongshi,rongtiyalichuanganqiyoushifeichangmingandeyuanjian,zhiyoushidangdeanzhuangheweihucainengshiqizuoyongdedaochongfendefahui。
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 tongchangyalichuanganqidesunhuaidoushiyouyuqianzhuangweizhibuqiadangeryinqide。ruguojiangchuanganqiqiangxinganzhuangzaiguoxiaodekonghuoxingzhuangbuguizedekongzhong,jiuyoukenengzaochengchuanganqidezhendongmoshoudaochongjiersunhuai。xuanzeheshidegongjujiagonganzhuangkong,youliyukongzhianzhuangkongdechicun。lingwai,heshideanzhuangniujuyouliyuxingchenglianghaodemifeng。danshiruguoanzhuangniujuguogaojiurongyiyinqichuanganqidehuatuo,weifangzhizhezhongxianxiangfasheng,tongchangzaichuanganqianzhuangzhiqianzaiqiluowenbufenshangtumofangtuohuahewu。zaishiyongzhezhonghuahewuyihou,jishianzhuangniujuhengao,chuanganqiyehennanbeiyidong。
● 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 jinguanchuanganqidedianlushejinenggoujingshoukekedejichujiagonghuanjing,danshiduoshuchuanganqiyebunengjueduifangshui,zaichaoshidehuanjingxiayebuliyuzhengchangyunxing。yinci,xuyaobaozhengjichujijitongdeshuilengzhuangzhizhongdeshuibuhuishenlou,fouzehuiduichuanganqizaochengbuliyingxiang。ruguochuanganqibudebubaoluzaishuizhonghuochaoshidehuanjingxia,jiuyaoxuanzejuyoujiqiangfangshuixingdeteshuchuanganqi。
● 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
傳chuan感gan器qi的de膜mo片pian是shi最zui容rong易yi損sun壞huai的de部bu位wei,在zai安an裝zhuang之zhi前qian請qing不bu要yao隨sui意yi脫tuo落luo其qi保bao護hu帽mao,同tong時shi在zai安an裝zhuang同tong時shi要yao注zhu意yi保bao護hu傳chuan感gan器qi的de膜mo片pian。安an裝zhuang孔kong的de加jia工gong要yao根gen據ju安an裝zhuang孔kong尺chi寸cun圖tu及ji尺chi寸cun表biao的de技ji術shu要yao求qiu加jia工gong,避bi免mian因yin安an裝zhuang孔kong不bu標biao準zhun引yin起qi的de膜mo片pian擦ca傷shang影ying響xiang傳chuan感gan器qi正zheng常chang工gong作zuo。
2、傳感器的拆除
安(an)裝(zhuang)時(shi)要(yao)保(bao)證(zheng)正(zheng)確(que)的(de)安(an)裝(zhuang)孔(kong)內(nei)沒(mei)有(you)遺(yi)留(liu)的(de)金(jin)屬(shu)異(yi)物(wu)或(huo)塑(su)料(liao),在(zai)清(qing)理(li)擠(ji)出(chu)機(ji)之(zhi)前(qian)應(ying)將(jiang)所(suo)有(you)的(de)傳(chuan)感(gan)器(qi)從(cong)機(ji)器(qi)上(shang)拆(chai)下(xia)。隻(zhi)有(you)當(dang)聚(ju)合(he)物(wu)成(cheng)灼(zhuo)熱(re)的(de)熔(rong)融(rong)狀(zhuang)態(tai)下(xia)才(cai)能(neng)拆(chai)下(xia)傳(chuan)感(gan)器(qi),拆(chai)下(xia)後(hou)立(li)即(ji)用(yong)軟(ruan)布(bu)將(jiang)傳(chuan)感(gan)器(qi)探(tan)頭(tou)膜(mo)片(pian)擦(ca)淨(jing)。同(tong)時(shi)上(shang)海(hai)皓(hao)鷹(ying)測(ce)控(kong)技(ji)術(shu)有(you)限(xian)公(gong)司(si)可(ke)以(yi)提(ti)供(gong)安(an)裝(zhuang)孔(kong)的(de)專(zhuan)用(yong)清(qing)潔(jie)工(gong)具(ju)清(qing)理(li)孔(kong)內(nei)的(de)物(wu)料(liao)以(yi)便(bian)下(xia)次(ci)安(an)裝(zhuang)。
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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