In the die-cut part of the drum, it is important to note the different design drawings (ie, the height of the radial indentation through the die-cutting machine). The radial indentation height not only generates the necessary pressure on the indentation, but more importantly, it is an important parameter that helps the paperboard to pass through the die-cutting machine during high-speed operation of the printing press.
If the height of the indentation is too low, the actual circumference of the die cut will be smaller than the design pattern, and the die cut product will be shorter than the original design.
In fact, radial indentation is a real inspection control of the board and its progress during the machine. Make it clear where it is in the die cut, because when the radial indentation is too low, it is very easy to find the difference in the measurement between the bite and the tip. In this case, the tip is typically 3 mm-4 mm short, which is mainly due to the bite during die cutting, the auxiliary roller set (the rotational speed of the printing press), and the pulling speed of the same carton board through the die cutting assembly. Cardboard will not stay in the auxiliary guide unit. It can smoothly reach the die-cutting unit. At the same time, the back of the carton starts to die-cut. When the length of the unfolding of the carton board is shorter than required, the resulting carton (box) is more than required. small. The 66-inch machine recommends an indentation of 22.6 mm (whether in the radial direction or in the axial direction) because in this case, in the guide-shaft assembly, a flat speed is maintained, the theoretical dimensions of the box No change will occur.
Many carton plant practices have shown that using these parameters (standards) to achieve results, most of the problems in processing are gone.
Of course, we can't guarantee that this method will solve all the problems because changes in the carton size will cause other factors to change: For example, if some of the parameters (standards) are incorrect, then those correct parameters may also be used. invalid. In order to solve this problem, these parameters must be specifically listed and eliminated, and the best method must be used to work.
The height, indentation height, and dimensional stability of a single corrugated box double corrugator die cutter (eg, B-tile) are constrained by the following factors: 1. Carton board thickness (including face paper); 2. For the purpose of stripping, the necessary penetrating power for die cutting; 3. Die cutter height box shape; 4. The ratio between the area of the carton and the number of sides of the box; 5. The condition of the carton board (wet or dry); 6. Moisture treatment; 7. The height of the die cutter and indentation used.
In the manufacture of dieboards, according to experience, different heights should be specified between the die cutter and the indentation so that the two parts are: the overall effect of the profile (knives and indentations) is equal to the height of the profile (22.8 mm) .
Pasting a series of sponge rubber tapes in the radial direction can solve some practical problems. The following data is recommended:
In the rubber band (closed hole) the height after compression is 19mm X 22mm.
In order to release rubber sponges, many carton manufacturers and dieboard manufacturers are reluctant to use very high specific mark heights. This is mainly to avoid any breaks in the interior of the liner during die cutting and the finished box (box) The child does not meet the design requirements.
Some carton makers use the speed of the machine's transmission or compensation mechanism to modify the speed of the die press roller so that die plate roller braking and die plate roller rotation speed can be adjusted to make the box die cut accurate.
Agena powerst smart slitting machine perfect replacement solution for interval
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