1、機(jī)器壓印關(guān)聯(lián)部件不良引起的質(zhì)量故障
1. Quality failure caused by poor related parts of machine imprinting
當(dāng)印版輥筒軸頭、壓印輥軸頭、傳動軸、齒輪以及與壓印相關(guān)聯(lián)的重要部件出現(xiàn)磨損、松動時，在壓印過程中印版輥或壓印輥會因此產(chǎn)生跳動或滑動現(xiàn)象，由于壓力不穩(wěn)定，致使印版面與紙板接觸不正常，造成紙板印刷表面出現(xiàn)糊版或局部圖文印跡不清的問題。通過認(rèn)真仔細(xì)的觀察和分析，查明故障的確切部位，采取相應(yīng)的措施進(jìn)行處理，對磨損、松動的部件予以修復(fù)，故障現(xiàn)象。
When the printing plate roller shaft head, imprint roller shaft head, transmission shaft, gear and the important parts associated with the imprint are worn and loose, the plate roller or imprint roller will jump or slide during the stamping process. Due to the unstable pressure, the contact between the printing plate and the paperboard is abnormal, resulting in the problem of paste plate or unclear local image and text imprint on the printing surface of paperboard. Through careful observation and analysis, find out the exact part of the fault, take corresponding measures to deal with, repair the worn and loose parts, and eliminate the fault phenomenon.
2、壓力輥調(diào)整不當(dāng)引起的質(zhì)量故障
2. Quality failure caused by improper adjustment of pressure roller
若壓力輥的位置過高或過，以致與瓦楞紙板接觸過緊或過松，也會出現(xiàn)臟版、糊版或局部圖文印跡不清情況，應(yīng)調(diào)整壓力輥合適的位置，使壓力輥和輥筒之間的間隙與紙板的厚度相適應(yīng)，以確保印刷版面的部位，避免該故障現(xiàn)象的產(chǎn)生。
If the position of the pressure roller is too high or too low, so that the contact with the corrugated board is too tight or too loose, there will be dirty plate, paste plate or unclear local image and text imprint. The pressure roller should be adjusted to the appropriate position to make the gap between the pressure roller and the roller adapt to the thickness of the paperboard, so as to ensure the position of the printing plate and avoid the occurrence of the fault phenomenon.
3、著墨輥不良引起的質(zhì)量故障
3. Quality failure caused by poor inking roller
當(dāng)著墨輥軸頭松動，著墨輥輥體出現(xiàn)彎曲、變形或表面破損時，也會引起版面臟、糊版或局部圖文不清晰。應(yīng)查明原因，采取相應(yīng)的措施予以處理，使著墨輥與印版之間保持均勻而又合適的接觸條件，對損壞的著墨輥予以更換，才能故障現(xiàn)象。
When the inking roller shaft head is loose, the inking roller body appears bending, deformation or surface damage, it will also cause the layout dirty, paste version or local text is not clear. It is necessary to find out the causes, take corresponding measures to deal with them, keep the contact condition between the inking roller and the plate evenly and appropriately, and replace the damaged inking roller to eliminate the fault phenomenon.
4、瓦楞紙板厚度不均勻引起的質(zhì)量故障
4. Quality failure caused by uneven thickness of corrugated board
如果成形的瓦楞紙板表面有人為破壞的凹陷痕跡時，凹陷部位的紙面也會出現(xiàn)印跡不清晰的質(zhì)量缺陷，對此如果采用加大印刷壓力彌補(bǔ)，容易使文字、線條版面出現(xiàn)起糊的質(zhì)量問題。為了避免版面起糊，瓦楞紙板在堆放、搬運(yùn)過程中，應(yīng)注意輕搬、輕放、輕壓(要控制好堆放高度)，切忌采用扔、砸、壓等不良生產(chǎn)習(xí)慣進(jìn)行搬運(yùn)。
If the surface of the corrugated board is damaged by man-made dent marks, the paper surface of the concave part will also appear the quality defect of unclear imprint. If the comprehensive increase of printing pressure is used to make up for this, it is easy to make the text and line layout appear paste quality problems. In order to avoid the paste of the layout, the corrugated paperboard should be handled with care (the stacking height should be controlled) in the process of stacking and handling. The bad production habits such as throwing, smashing and pressing should be avoided.
5、印版厚度不均勻引起的質(zhì)量故障
5. Quality failure caused by uneven plate thickness
當(dāng)橡皮版材厚度不均勻時，印版版面就會出現(xiàn)高差。版面高的地方就容易糊版，版面的地方就容易出現(xiàn)著墨不全，造成印跡不清晰，為避免這一不良情況的發(fā)生，可采用零星制版的方式，將版材制成若干小塊的，應(yīng)采用同一塊版材分別進(jìn)行制作，這樣它的厚度差異比較小。如果已經(jīng)制好的橡皮版，存在厚薄差時，可在局部偏薄的印版背面多粘膠布層彌補(bǔ)，使整個印版保持基本一致的厚度，確保印刷壓力和版面著墨的均勻。
When the rubber plate thickness is not uniform, the plate layout will appear height difference. The place with high layout is easy to paste, and the place with low layout is easy to have incomplete ink, resulting in unclear imprint. In order to avoid the occurrence of this bad situation, sporadic plate making method can be used. If the plate is made into several small pieces, the same plate should be used to make them separately, so that the thickness difference is relatively small. If there is a thickness difference between the already made rubber plate, more adhesive tape can be applied to the back of the locally thin plate to make up for the difference, so as to keep the whole plate basically the same thickness, so as to ensure the uniform printing pressure and ink on the page.
6、色序不當(dāng)引起的質(zhì)量故障
6. Quality failure caused by improper color sequence
如果將版面較滿的圖文排列在色組印刷，當(dāng)瓦楞紙板進(jìn)入下一色組機(jī)構(gòu)印刷的過程中，由于紙板色組的印刷圖文的著墨量大、干燥速度慢，極容易使印跡轉(zhuǎn)移造成版面起臟。為防止這一弊病的產(chǎn)生，宜將面積小的版面排列在色組印刷，將面積大的版面排列在后續(xù)色組印刷，可避免印跡轉(zhuǎn)移造成臟版現(xiàn)象。
If the images and texts with a full layout are arranged in the first color deck for printing, when the corrugated board enters the printing process of the next color group, due to the large amount of ink and slow drying speed of the printed images and texts of the first color group of the paperboard, it is very easy to transfer the imprint and cause the page dirty. In order to prevent this defect, it is better to arrange the small area of the page in the first color group printing, and arrange the large area of the page in the subsequent color group printing, which can avoid the dirty plate phenomenon caused by imprint transfer.
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