The front knife of carton always bursts about 5 millimeters, sometimes it does not burst, how to solve it?

The relevant solutions for industry operators are as follows:

First: Change knife - flat knife;

Second: Starting from several aspects

Firstly, because the cardboard is too warped, it can fold in half along the pressing line.

(2) The cutting edge may be too sharp or passive, and can be replaced or flattened.

(3) Additional paper guide and press rod can be installed at the second knife, or the speed can be reduced or the surface paper with better burst resistance can be replaced;

(4) On the printing slotting die-cutting machine, when the cardboard is easy to bump into the die-cutting roller after the cardboard slotting, it will cause the vibration of the cardboard when the cardboard slotting, leading to the tearing of the slotting opening.

When the printing press is inspected, it can not be seen clearly. Once the cardboard boxes are formed and the moisture of the cardboard evaporates, the groove opens. Therefore, a paper wheel device is needed to be installed on the die-cutting roller.

(5) Two groups of paper wheels can also be added to the slotting part. In the normal production process, two paper wheels can transfer the cardboard steadily. In the slotting process, they can reduce the runout of the cardboard, prevent the cracking of the slotting opening, and ensure the cardboard box slotting more precise and clean.

_The guide rod of slotting tool holder plays a transfer role when slotting cardboard. If the height difference between the guide rod and the slotting tool is too large, then the cardboard can not be supported in the slotting process, thus the jump is increased and a big jump is easy to break the slotting opening. The guide rod is to ensure the smooth transfer of cardboard.

3. Suggestions for changing round knives