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<tr> <td class="right_lu">您當前所在的位置：<a href="index.asp">首頁</a>>><a href="xwzx.asp?cid=8">售后服務</a></td> </tr> <tr> <td class="right_content"><table width="100%" border="0" cellspacing="0" cellpadding="0"> <tr> <td class="dsjxx_t">北人J2205型膠印機機械故障排除一例</td> </tr> <tr> <td class="dsjxx_time">更新時間：11/2/2011 來自：北京利昌恒業印刷機械有限公司 瀏覽次數：12087次</td> </tr> <tr> <td class="dsjxx_content"><p> 北人J2205型對開單面雙色膠印機在印刷完一批定量為450g/㎡的厚紙板后，緊接著印刷定量為80g/㎡的單面銅版紙雙色藥標簽時，印品上出現了第2色印跡大范圍（從印品叼口至規矩中線位置）縱向重影，下面淺印跡與深印跡的間距離達1.5㎜。另外，兩兩邊還出現無規律輸紙不到位的弊病，嚴重影響產品質量，無法正常生產。</p> <p> 針對上述情況，筆者將問題原因歸納為以下幾點。</p> <p> （1）在印制450g/㎡厚紙板過程中，壓印滾筒叼紙牙長時間在高負荷狀態下工作，致使部分叼紙牙小壓簧疲勞失效，叼力下降、叼紙不穩，從而引起<a href="http://www.hzdwmd.com/" target="_blank">重影</a>。</p> <p> （2）在承印材料由<a href="http://www.hzdwmd.com/" target="_blank">厚紙板改為薄紙</a>后，各滾筒間的壓力調節、包襯測量、包覆操作不當。</p> <p> （3）印厚紙板時<a href="http://www.hzdwmd.com/" target="_blank">壓力過大</a>，在連續印刷中，當滾筒工作面與空檔面交換時產生較大的沖擊震動，導致相關部件松動或損壞，從而產生重影及兩邊送紙不到位。</p> <p> 依照上述分析，筆者首先對壓印滾筒叼紙牙進行了全面檢查，更換了部分疲勞失效的小壓簧，保證各叼紙牙張角到位，牙片長短一致、叼力一致。接下來，嚴格按照該機的標準技術參數，仔細校正各滾筒殼體的間隙，重新計算、測量和安裝包襯，確保各滾筒間壓力正常。開機試印后，重影現象有所減輕，但未能徹底解決。</p> <p> 為此，我們把橇棒插入滾筒殼體空檔往復擺動，對第2色組橡皮滾筒和印版滾筒的傳動機構進行檢查，發現印版滾筒存在較大的縱向活動間隙。逐個拆卸印版的前后（上、下）微量調節打版機構支撐座，取下傳動連板N73-20507，發現帶動印版滾筒轉動的傳動小軸N73-20504與齒輪座N113-20521之間的配合間隙較大，使印版滾筒在轉動中產生較大擺動。</p> <p> 將固定印版滾筒齒輪和安裝傳動小軸的齒輪座取下，發現固定傳動小軸的兩顆M6內六角螺釘中的一顆已折斷，另一顆也已松動，位移較大，且傳動小軸與齒輪座之間的配合為間隙配合。為了保證傳動機構的可靠、穩定，在維修過程中，我們對齒輪座上安裝傳動小燦的固定孔進行測量，并對相應的安裝部位實施噴鍍、磨削；將傳動小軸與齒輪座之間的配合改變為緊配合；安裝兩顆M6螺釘時加涂防松膠。安裝調校完畢，試機印刷，重影徹底消失，但兩邊無規律輸紙不到位現象仍然存在。</p> <p> 對此，筆者認為很可能是由于壓印滾筒松動并在轉動中產生縱向位移所致。對照壓印滾筒及其相關傳動機構裝配圖，卸掉遞紙凸輪N73-20106，發現定位銷和緊固螺釘已嚴重松動，擰緊后將機器各部件重新安裝好，開機印刷，重影及兩邊無規律輸紙不到位故障均徹底消除。<br /> </p> </td> </tr> </table> </td> </tr> </table> </td> </tr> </table> <!--底部--> <table width="100%" border="0" cellspacing="1" cellpadding="0" class="bottom"> <tr> <td> <a href="gywm.asp">公司介紹</a> | <a href="shfw.asp">服務中心</a> | <a href="products.asp">產品展示</a> | <a href="lyb.asp">在線留言</a> | <a 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