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印刷機橡皮布的裁剪和固定 ​

From:Buke printing factory of China | Author:China Bukeprinting factorybook0755 | Published time: 2020-10-09 | 428 Views | 🔊 Click to read aloud ❚❚ | Share:
正確地裁剪和緊固好橡皮布,對於延長橡皮布的使用壽命,提高印品質量和印版的耐印率等,都起著一定的作用。

印刷機橡皮布的裁剪和固定

正確地裁剪和緊固好橡皮布,對於延長橡皮布的使用壽命,高印品質量和印版的耐印率等,都起著一定的作用。


(1)橡皮布的裁剪

①橡皮布的絲綹辨別橡皮布是直絲綹還是橫絲綹,主要是根據其反面的平紋底布的絲綹來決定的。其辨別方法是,通過觀察自然捲的筒形而獲得的,與自然捲筒的筒芯線相平行的絲綹方向為緯向,而與緯向絲綹相垂直的方向則為經向。一


②裁剪橡皮布必須把橡皮布的經向作為拉緊受力的方向,
即相同於滾筒的運轉方向。如果用緯向作為拉緊橡皮布的受力方向的話,則由於緯向的抗張強度小,伸長率大,在長期印刷中,橡皮布將會很快地鬆弛,並因此而出現雙印。實踐證明;只有選取橡皮布的經向作為裁切、綳緊和承受拉力的方向,才可以獲得理想的印刷效果。

③裁剪的形狀和尺寸橡皮布所被裁剪的形狀,必須是相當嚴格的矩形,四個角都為90°直角,且兩條對角線也要相等。



(2)橡皮布的裝夾與緊固


①橡皮布的經向絲綹必須與鐵夾板相垂直,而其緯向絲綹則
必然與鐵夾板相平行。


②橡皮布上的洞眼要打在同一條直線上,並與鐵夾板孔相
對應


③緊固螺釘時的順序應當是,從中間開始,逐個地向兩邊擰
緊。對每個螺釘的擰緊力要盡量一致,這樣才有利於橡皮布綳緊張力的均衡和錶面平整。

印刷機橡皮布的裁剪和固定
印刷機橡皮布的裁剪和固定

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