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Manual Die Cutting Machine indentation lines and dark lines produced:
The cause of the problem is that the equipment burst line means that the pressure of the Manual Die Cutting Machine is too large to exceed the limit of the paper fiber and cause the paper fiber to break or partially break; and the dark line means the indentation Line, usually due to Manual Die Cutting Machine and indentation line selection is not appropriate, die-cutting pressure regulation is not good, the paper quality is poor, the direction of the paper fiber and Manual Die Cutting Machine row direction inconsistency, low paper moisture lead to decreased flexibility and so on The cause of the problem.
Solution: Manual Die Cutting Machine to select the appropriate die-cutting version; and also adjust the die-cutting pressure; before the die-cutting equipment to be Manual Die Cutting Machine to place the print in the workshop for some time; be sure to improve the workshop Relative humidity of the environment. The better way to change is to reduce the height of the indentation wire, but also to reduce the height is usually 0.1 ~ 0.2mm, specifically according to the paper to determine the quantitative, and quantified in the 350g / m2 above the paper to reduce the indentation steel Line height of 0.2mm, and the amount of paper below 350g / m2 should be reduced 0.1mm.
Domestic Manual Die Cutting Machine in some aspects with the world's advanced level is quite close, but in terms of speed, accuracy, especially in machine stability, reliability, there is a certain gap. Automatic Manual Die Cutting Machine in the technical indicators, Manual Die Cutting Machine speed and accuracy are important technical indicators, the speed directly reflects the production efficiency, accuracy marks the product quality. Improve the speed at the same time improve the accuracy of the printing equipment is a more difficult to solve the problem.
Variable speed feed and accurate positioning:
Automatic paper feeder according to the way the paper runs can be divided into three kinds: intermittent, continuous and variable speed feeding. At present, the continuous feeding mode is widely adopted both at home and abroad, that is, the front sheet and the rear sheet are always overlapped together. In this way, the sheet feeding is smooth and the speed is high. At the same die-cutting speed, it is assumed that the paper has the same settling time at the leading edge, and the intermittent feed rate is much faster than the continuous feed rate. Paper feeding speed, the paper will have a larger impact on the former rules, easily lead to paper bouncing or curling, resulting in positioning is not accurate, lower accuracy. In the case of the same feeding speed, intermittent feeding is much less than the positioning of continuous feeding, there will be problems of instability of positioning of the paper in the front gauge, side gauge, also will lead to lower accuracy. If you want to intermittently feed enough paper stability, it is necessary to reduce the speed of Manual Die Cutting Machine, thereby reducing the die-cutting capabilities. Therefore, intermittent feeding is generally used only for small and low speed machines, while continuous feeding is used for large format and high speed machines.
In recent years, the Manual Die Cutting Machine began to use variable speed feeding mode. Variable speed feeding and continuous feeding of the working principle is basically the same, but on this basis, an increase of feeding speed gear. If the average paper feed rate is equal, then variable speed paper feed and continuous paper feed positioning time the same, but variable speed paper feed in each paper feed speed will have a periodic change. Before the paper reaches the regular time, the paper feeding speed reaches the lowest, the impact of the paper is small, the positioning is accurate, which is helpful to improve the cutting speed and precision.
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