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步殼印刷公司出現雙印重影的故障

From:Buke printing factory of China深圳步殼印刷廠 | Author:China Bukeprinting factorybook0755 | Published time: 2020-07-18 | 516 Views | 🔊 Click to read aloud ❚❚ | Share:
印刷公司印刷機印刷時,第一色著墨圖文會從印張上轉移到第二色組橡皮滾筒上的無圖文區,第二色著墨圖文又會轉移到第三色的橡皮滾筒上,如此類推,這些轉移的圖文又印在後面的印張上此時除非第二次印刷套印絕對準確,否則會出現雙印重影現象那麽在什麽情況下出現套印不準現象,分析原因有下麵三種情況
步殼印刷公司出現雙印重影的故障

印刷公司印刷機印刷時,第一色著墨圖文會從印張上轉移到第二色組橡皮滾筒上的無圖文區,第二色著墨圖文又會轉移到第三色的橡皮滾筒上,如此類推,這些轉移的圖文又印在後面的印張上此時除非第二次印刷套印絕對準確,否則會出現雙印重影現象那麽在什麽情況下出現套印不準現象,分析原因有下麵三種情況

(1)紙張在叼牙中滑動。

(2)壓印滾筒或傳紙滾筒傳動齒輪磨損間隙過大,軸承磨損產生軸向間隙。

(3)紙張在壓印過程中發生變形。

排除方法:
在印刷中出現雙印重影時,首先從上述三種原因分析。檢查叼紙牙是否清潔,有無磨損。要註意清潔牙墊,如有磨損,要調整牙墊高低一致;調整壓印滾筒與傳紙滾筒叼牙力相互致。檢查叼牙軸套有無磨損,閉牙彈簧力是否合適,再檢查開閉牙滾子和凸輪有無磨損,如有磨損應及時更換滾子。若檢查後不是叼牙有問題,則應檢查壓印滾筒或傳紙滾筒齒輪,由於磨損會使齒側間隙過大。此外,軸承也有磨損發生。為此調整周向間隙最小為0.02mm,印刷時故障仍不能排除,只能對機器進行檢修,更換齒輪和軸承。印刷時盡量採用平整的紙張。

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