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注塑机电器故障排查9大方法

更新时间:2021-03-02 15:28:45 星期一
摘要:

注塑机电器(qi)故障(zhang)排查9大(da)方法!   1、程序检查法:注塑机是按照某种程序运行(xing)的(de),每次(ci)运行(xing)均要(yao)历经(jing)合(he)模(mo)、 […]

注(zhu)塑机(ji)电器故障排查9大方法!

 

1、程序(xu)检查法(fa):注塑(su)机是(shi)按(an)照某(mou)种程序(xu)运行的,每(mei)(mei)次运行均要历经合模、座(zuo)进、注射(she)、冷却(que)、熔胶、射(she)退、座(zuo)退、开模、项出(chu)以及出(chu)入芯(xin)的循环(huan)过程,其中(zhong)每(mei)(mei)一(yi)步称作一(yi)个工作环(huan)节,实现每(mei)(mei)一(yi)个工作环(huan)节,均有(you)一(yi)个独立的控(kong)(kong)(kong)制(zhi)电路。程序(xu)检查法(fa)便(bian)是(shi)确认故(gu)障(zhang)(zhang)具体出(chu)现于哪(na)个控(kong)(kong)(kong)制(zhi)环(huan)节之上,这(zhei)样排除(chu)故(gu)障(zhang)(zhang)的方(fang)向(xiang)便(bian)明确了,有(you)了针(zhen)对(dui)性(xing)对(dui)于排除(chu)故(gu)障(zhang)(zhang)非常(chang)重要。这(zhei)种方(fang)法(fa)不(bu)但适用在有(you)触点(dian)的电气控(kong)(kong)(kong)制(zhi)系统(tong),亦(yi)适用在无触点(dian)控(kong)(kong)(kong)制(zhi)系统(tong),如PC控(kong)(kong)(kong)制(zhi)系统(tong)或是(shi)单片机控(kong)(kong)(kong)制(zhi)系统(tong)。

 

2、静态电阻(zu)测量(liang)法:

静态电(dian)(dian)(dian)阻(zu)(zu)法便是(shi)于(yu)断(duan)电(dian)(dian)(dian)情况之下C用万使用表电(dian)(dian)(dian)阻(zu)(zu)测(ce)量电(dian)(dian)(dian)路的(de)(de)点阻(zu)(zu)值(zhi)是(shi)否(fou)正(zheng)常(chang),由于(yu)任(ren)何(he)一个(ge)电(dian)(dian)(dian)子元件均是(shi)一个(ge)PN结构(gou)成的(de)(de),它的(de)(de)正(zheng)反(fan)往电(dian)(dian)(dian)阻(zu)(zu)值(zhi)是(shi)不(bu)同的(de)(de),任(ren)何(he)一个(ge)电(dian)(dian)(dian)气元件亦均是(shi)有(you)一定阻(zu)(zu)值(zhi),连(lian)接着(zhe)电(dian)(dian)(dian)气元件的(de)(de)线路或是(shi)开关,电(dian)(dian)(dian)阻(zu)(zu)值(zhi)绝不(bu)是(shi)等于(yu)零便是(shi)无(wu)(wu)穷大,因(yin)此测(ce)量他们的(de)(de)电(dian)(dian)(dian)阻(zu)(zu)值(zhi)大小是(shi)否(fou)符合规(gui)定要求便可以判断(duan)好坏(huai)。检(jian)查一个(ge)电(dian)(dian)(dian)子电(dian)(dian)(dian)路好坏(huai)有(you)无(wu)(wu)故(gu)障亦可用这(zhei)个(ge)方法,所以较(jiao)安(an)全(quan)。

 

3、电位测量法:

上述方法无法确定(ding)故(gu)障部位(wei)(wei)时,可(ke)于通电(dian)(dian)(dian)(dian)(dian)情(qing)况之(zhi)(zhi)(zhi)下进(jin)行测量各个(ge)电(dian)(dian)(dian)(dian)(dian)子(zi)(zi)或是(shi)(shi)(shi)电(dian)(dian)(dian)(dian)(dian)气元(yuan)器件的(de)断(duan)电(dian)(dian)(dian)(dian)(dian)电(dian)(dian)(dian)(dian)(dian)位(wei)(wei),由于于正常工作(zuo)情(qing)况之(zhi)(zhi)(zhi)下,电(dian)(dian)(dian)(dian)(dian)流(liu)闭环电(dian)(dian)(dian)(dian)(dian)路(lu)(lu)之(zhi)(zhi)(zhi)上各点电(dian)(dian)(dian)(dian)(dian)位(wei)(wei)是(shi)(shi)(shi)一(yi)定(ding)的(de),所谓各点电(dian)(dian)(dian)(dian)(dian)位(wei)(wei)便是(shi)(shi)(shi)指电(dian)(dian)(dian)(dian)(dian)路(lu)(lu)元(yuan)件之(zhi)(zhi)(zhi)上各个(ge)点对于地的(de)电(dian)(dian)(dian)(dian)(dian)位(wei)(wei)是(shi)(shi)(shi)不(bu)(bu)同的(de),所以是(shi)(shi)(shi)改由一(yi)定(ding)大(da)小(xiao)要求,电(dian)(dian)(dian)(dian)(dian)流(liu)是(shi)(shi)(shi)自高电(dian)(dian)(dian)(dian)(dian)位(wei)(wei)流(liu)向(xiang)低(di)电(dian)(dian)(dian)(dian)(dian)位(wei)(wei),顺电(dian)(dian)(dian)(dian)(dian)流(liu)方往去(qu)测量电(dian)(dian)(dian)(dian)(dian)子(zi)(zi)电(dian)(dian)(dian)(dian)(dian)气元(yuan)件之(zhi)(zhi)(zhi)上的(de)电(dian)(dian)(dian)(dian)(dian)位(wei)(wei)大(da)小(xiao)应符合这个(ge)规律,因此用万用表去(qu)测量控(kong)制(zhi)电(dian)(dian)(dian)(dian)(dian)路(lu)(lu)之(zhi)(zhi)(zhi)上有关点的(de)电(dian)(dian)(dian)(dian)(dian)位(wei)(wei)是(shi)(shi)(shi)否(fou)符合规定(ding)值(zhi),便可(ke)判断(duan)故(gu)障所在(zai)点,接(jie)着再次判断(duan)是(shi)(shi)(shi)为何引起电(dian)(dian)(dian)(dian)(dian)流(liu)值(zhi)变化的(de),是(shi)(shi)(shi)电(dian)(dian)(dian)(dian)(dian)源绝不(bu)(bu)正确,仍然电(dian)(dian)(dian)(dian)(dian)路(lu)(lu)有断(duan)路(lu)(lu),仍然元(yuan)件损坏造成(cheng)的(de)。

 

4、短(duan)路法:

控制环节电(dian)(dian)(dian)路(lu)均是开关(guan)或(huo)是继(ji)电(dian)(dian)(dian)器(qi),接触(chu)(chu)(chu)器(qi)触(chu)(chu)(chu)点(dian)组(zu)合而成。如果怀(huai)疑某个或(huo)是某些触(chu)(chu)(chu)点(dian)有故障时,可(ke)以使用导(dao)线将该触(chu)(chu)(chu)点(dian)短接,此(ci)时通电(dian)(dian)(dian)若故障消失(shi),亦(yi)证明判断正确,说(shuo)明该电(dian)(dian)(dian)气元件已经坏。不过(guo)要(yao)牢记,如果发现故障点(dian)作(zuo)完试(shi)验之后应(ying)立刻(ke)拆(chai)除短接线,绝不允许用短接线代替开关(guan)或(huo)是开关(guan)触(chu)(chu)(chu)点(dian)。短路(lu)法重要(yao)用来查找电(dian)(dian)(dian)气逻辑关(guan)系电(dian)(dian)(dian)路(lu)的(de)断点(dian),或(huo)许有时候测量电(dian)(dian)(dian)子电(dian)(dian)(dian)路(lu)故障亦(yi)可(ke)用此(ci)法。

 

5、断路法:

控制电(dian)路(lu)(lu)(lu)也可能出现(xian)一些特殊(shu)故(gu)障。这说明电(dian)路(lu)(lu)(lu)之中某些触(chu)点(dian)遭短(duan)接了,查找这类故(gu)障的(de)最(zui)为好办法是(shi)断(duan)路(lu)(lu)(lu)法,便是(shi)将怀疑产生(sheng)故(gu)障得触(chu)点(dian)断(duan)开(kai),假(jia)如故(gu)障消(xiao)失了,说明判断(duan)正确。断(duan)路(lu)(lu)(lu)法重要用于“和”逻(luo)辑关系(xi)的(de)故(gu)障点(dian)。

 

6、替代(dai)法:

根(gen)据上述方(fang)法,发现故(gu)障出(chu)于某(mou)点或是(shi)(shi)(shi)某(mou)块(kuai)(kuai)电(dian)(dian)(dian)路(lu)板(ban),此时可将(jiang)认为(wei)有(you)(you)问题的(de)元(yuan)(yuan)件(jian)或是(shi)(shi)(shi)电(dian)(dian)(dian)路(lu)板(ban)取之下,使用新的(de)或是(shi)(shi)(shi)确认无(wu)故(gu)障的(de)元(yuan)(yuan)件(jian)或是(shi)(shi)(shi)电(dian)(dian)(dian)路(lu)板(ban)代替,假如故(gu)障消失亦认为(wei)判(pan)断正确。反之亦然(ran)亦需要继续查找,常(chang)(chang)常(chang)(chang)维修(xiu)人(ren)员对于易损的(de)元(yuan)(yuan)器件(jian)或是(shi)(shi)(shi)重要的(de)电(dian)(dian)(dian)子板(ban)均备有(you)(you)备用件(jian),只要有(you)(you)故(gu)障立刻换上一(yi)块(kuai)(kuai)便解决了问题,故(gu)障件(jian)带(dai)回来再(zai)次渐渐查找修(xiu)复,这亦是(shi)(shi)(shi)一(yi)种快(kuai)速排故(gu)方(fang)法之一(yi)。

 

7、经验排(pai)故法:

借(jie)以能够做到迅速(su)(su)排故(gu)(gu)(gu),除急速(su)(su)总结自己的(de)(de)(de)(de)实践经(jing)验(yan)(yan),还要急速(su)(su)学习(xi)别人的(de)(de)(de)(de)实践经(jing)验(yan)(yan),实践经(jing)验(yan)(yan)常常亦(yi)使(shi)注塑机(ji)的(de)(de)(de)(de)故(gu)(gu)(gu)障有(you)一定规律,有(you)的(de)(de)(de)(de)经(jing)验(yan)(yan)是(shi)使(shi)用血汗(han)换来(lai)的(de)(de)(de)(de)重(zhong)(zhong)要教训,J9九游会AG 亦(yi)越(yue)来(lai)越(yue)应(ying)重(zhong)(zhong)视(shi)。常常这些经(jing)验(yan)(yan)可以使(shi)J9九游会AG 去迅速(su)(su)排除故(gu)(gu)(gu)障,减少事故(gu)(gu)(gu)与损失。或(huo)许严(yan)格(ge)来(lai)说应(ying)该杜绝(jue)注塑机(ji)事故(gu)(gu)(gu),这是(shi)J9九游会AG 维(wei)修人员应(ying)有(you)的(de)(de)(de)(de)职责(ze)。

查(cha)找(zhao)注(zhu)塑(su)机(ji)电气系(xi)统故障(zhang)方法(fa)除了上述几(ji)种(zhong)之外,还(hai)有许多其(qi)他(ta)办(ban)法(fa),无(wu)论使(shi)用什么方法(fa),维修(xiu)工(gong)作(zuo)者(zhe)必(bi)需(xu)要弄懂(dong)注(zhu)塑(su)机(ji)的基本原(yuan)理与(yu)结构,便能维修(xiu)好注(zhu)塑(su)机(ji)。

 

8、电气(qi)系统排故基(ji)本思路:

电气控制系统有时候故(gu)障比(bi)较复杂加上现(xian)在注塑机均是微机控制,软(ruan)硬件交叉于一起(qi),遇到故(gu)障最先(xian)思想你们(men)紧张,排故(gu)时坚持:先(xian)易后难、先(xian)外之后之内、综(zong)合(he)考虑、有所联想。

注塑(su)机运行之中较多(duo)的(de)故(gu)障(zhang)是开关开关接触(chu)不良引起(qi)的(de)故(gu)障(zhang),因此判断故(gu)障(zhang)时(shi)应依据故(gu)障(zhang)以(yi)及(ji)柜内(nei)指示灯显示的(de)情况,先行对于内(nei)部线(xian)路(lu)(lu)、电(dian)源(yuan)部分,进行检(jian)查(cha),即门触(chu)点(dian)、安全(quan)回路(lu)(lu)、交直(zhi)流电(dian)源(yuan)等,如(ru)果熟悉电(dian)路(lu)(lu),顺(shun)藤摸瓜不久即可(ke)解(jie)决。

有(you)些故障绝不像继电器线(xian)路(lu)那麽(mo)简单直(zhi)观(guan)、PC注塑机的(de)(de)许多保护环节均是(shi)隐含于它的(de)(de)软(ruan)硬(ying)件系(xi)统之中,其故障与原因正在如结果(guo)与条件是(shi)严格对(dui)应的(de)(de),找(zhao)故障时秩序对(dui)于他们间(jian)的(de)(de)关系(xi)进行联(lian)想与猜(cai)测(ce),一一排除(chu)疑(yi)点直(zhi)至排除(chu)故障。

 

9、测试接触(chu)不良的方法:

(1)于(yu)控(kong)制(zhi)柜(ju)电(dian)源进线(xian)板之(zhi)上,一般接有(you)电(dian)压(ya)表,观(guan)察运行之(zhi)中的电(dian)压(ya),若(ruo)是某(mou)项(xiang)电(dian)压(ya)偏(pian)西低或是波(bo)动比较大,该项(xiang)可能便有(you)虚(xu)接部位(wei)。

(2)用点(dian)温(wen)计测试每个连(lian)接处(chu)的温(wen)度,找(zhao)出发热部位,打磨(mo)接触面,拧(ning)紧螺丝(si)钉。

(3)使(shi)(shi)用低压(ya)大电(dian)(dian)流(liu)测试虚接(jie)(jie)(jie)(jie)部位,把总电(dian)(dian)源断(duan)开,再次把进入(ru)控制柜的电(dian)(dian)源断(duan)开,装一套电(dian)(dian)流(liu)发(fa)生(sheng)器(qi),使(shi)(shi)用10mm2铜(tong)芯电(dian)(dian)线临时性搭接(jie)(jie)(jie)(jie)于(yu)接(jie)(jie)(jie)(jie)触面的两端,调压(ya)器(qi)渐渐升压(ya),短路(lu)电(dian)(dian)流(liu)达(da)到50A时,记录输入(ru)电(dian)(dian)压(ya)值(zhi)。按照(zhao)上述方法对于(yu)每(mei)一个(ge)连(lian)接(jie)(jie)(jie)(jie)处均测一次,记录每(mei)个(ge)接(jie)(jie)(jie)(jie)点电(dian)(dian)压(ya)值(zhi),那一处电(dian)(dian)压(ya)高,便是接(jie)(jie)(jie)(jie)触不良。

 

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