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BuKe factory >> knowledge >> 印務公司印刷機遞紙牙閉牙過晚造成套印不準 ​

印務公司印刷機遞紙牙閉牙過晚造成套印不準 ​

From:Buke printing factory of China深圳步殼印刷廠 | Author:China Bukeprinting factorybook0755 | Published time: 2020-07-18 | 433 Views | 🔊 Click to read aloud ❚❚ ▶ | Share:
印務公司印刷機遞紙牙在牙臺上閉牙過晚,造成套印不準。其原因是:在印刷過程中,遞紙牙的閉牙應該在側規拉完紙,壓紙輪剛上抬時,遞紙牙應該叼住紙張,然後遞給壓印滾筒叼牙進行印刷。
印務公司印刷機遞紙牙閉牙過晚造成套印不準

印務公司印刷機遞紙牙在牙臺上閉牙過晚,造成套印不準。其原因是:在印刷過程中,遞紙牙的閉牙應該在側規拉完紙,壓紙輪剛上抬時,遞紙牙應該叼住紙張,然後遞給壓印滾筒叼牙進行印刷。

如果當側規定位好,遞紙牙才能叼住紙的情況下,就開始運動,必然會造成遞紙牙叼紙時的叼口尺寸發生前後變化,造成印品套印不準。

當發現印品出現不規則的套印不準現象時,檢查紙張到前規定位至側規拉紙均正常,當側規壓紙輪上抬時,遞紙牙尚未閉牙,當遞紙牙已開始運動時才閉牙,實際上是遞紙牙在運動中叼住紙,再送給壓印滾筒叼牙,這樣造成了紙張叼口的錯動,影響了套印精確性。

排除的方法：

調節遞紙牙的閉牙時間。松開傳動面內側旋轉偏心套上的凸塊長孔螺釘,向前調整閉牙凸塊,使得遞紙牙叼住紙張的時間稍微提前一點,註意鎖緊長孔螺釘,再開機印刷,若無套印不準確現象即可。

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