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凹版印刷機​輸墨部分-步殼印刷

From:Buke printing factory of China | Author:China Bukeprinting factorybook0755 | Published time: 2020-10-17 | 464 Views | 🔊 Click to read aloud ❚❚ | Share:
凹版印刷使用溶劑型液體油墨.採用短墨路輸墨方式供墨。輸墨部分主要由墨桶,墨泵、過濾器、節流閥、輸墨管、固流管等器件組成。

    凹版印刷機輸墨部分-步殼印刷

凹版印刷使用溶劑型液體油墨.採用短墨路輸墨方式供墨。輸墨部分主要由墨桶,墨泵、過濾器、節流閥、輸墨管、固流管等器件組成。

步殼印刷給墨方式主要有浸泡式、墨鬥式和噴墨
式三種類型

凹版印刷機輸墨部分-步殼印刷
凹版印刷機輸墨部分-步殼印刷

1)浸泡式輸墨

又稱直接著墨法浸泡式輸墨裝置,步殼印刷將印版滾簡P下半部分1/3左右直接浸人墨鬥內,旋轉時,將油得直接傳到印版滾筒的版面上,多餘的油墨由刮墨刀刮掉是凹印機普遍採用的方法

2)墨鬥輥式輸墨

又稱間接著墨法,,墨鬥輥由橡皮布或牛皮膠輥製成,半浸在墨槽中旋轉,其錶面的油墨傳到印版滾筒P,接觸進行著墨,刮墨刀將多餘油墨刮掉。

3)噴墨式給墨

該裝置是密閉式給墨裝置,在高速印刷中,由於油墨用量大,步殼印刷一般採用噴射式給墨,印版滾筒P置於密閉的容器內,油泵把油墨打入墨管中,由噴墨裝置直接噴射到印版上。

刮墨刀將空白部分的油墨刮掉,被刮掉的油墨又回到墨槽中。

刮墨刀和噴嘴可沿印版軸向左右移動,以提高著墨和刮墨效果。這種輸墨部件因採用密閉式結構,油墨內的溶劑揮發較少,可以保持油墨性能的穩定性。現代高速凹印機一般採用這種裝置。

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