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BuKePrinting >> knowledge >> 什麽是印刷工序模切版切割的“搭橋”

什麽是印刷工序模切版切割的“搭橋”

From:Buke printing factory of China | Author:China Bukeprinting factorybook0755 | Published time: 2020-12-06 | 708 Views | Share:
什麽是印刷工序模切版切割的“搭橋”

什麽是印刷工序模切版切割的“搭橋”

模切版切割工藝中因為橋的存在,用市售的鋼線還不能直接進行鑲嵌,必須把鋼刀(線)在與橋對應的部位加工出有一定深度的缺口,才可能將鋼刀線鑲到切縫中。鑲嵌到位的鋼刀(線),下端和木板底面平齊,所以缺口深度應和木板的厚度相等。


目前,國內使用的鋼刀(線)寬度一般為23.5mm,如果用厚l8mm的膠合板製作模切版底板,做出缺口後鋼刀(線)相連部位的寬度只有5.5mm,此時鋼刀(線)的剛度和強度尚能滿足模切的要求。然而,有的用戶因工藝需要或為降低成本,常用20mm以上的膠合板切制模切版。此時,做出切口的鋼線在連接部位的尺寸≤3.5mm,造成鋼線承受力明顯下降,模切版的使用壽命大縮短。此時,如將橋位厚度切掉一部分,並使鋼刀(線)缺口深度減少相應的尺寸,將和橋對應部位的鋼刀(線)也能鑲到切縫中一部分,就可提高整個鋼刀(線)的剛性和強度。這種把橋切到一定深度的過程,在工藝上叫搭橋。用鋸切法鋸半通槽幾乎是不可能的,因此搭橋工藝對於鋸切法來說是相當困難的。

什麽是印刷工序模切版切割的“搭橋”
什麽是印刷工序模切版切割的“搭橋”

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