Common die-cutting machine moulding faults and troubleshooting methods

Die-cutting machine die-cutting indentation production of qualified products, should be cut accurately, clean cut, no burrs, flower knife, indentation is clear, the depth of the appropriate.

Common faults and solutions in die cutting and creasing operation

Die cutting and creasing production of qualified products, should be cut accurately, clean cut, no burrs, flower knife, indentation clear, moderate depth.

In the die-cutting machine die-cutting indentation operation in the common faults and solutions:

1. Indentation is not clear, dark lines, blowing lines

Dark line refers to the undeserved indentation; blowing line refers to the pressure due to the indentation is too heavy cardboard fracture.

Causes: poor paper quality, paper moisture content is too low, so that its brittleness increases, toughness decreases; steel line selection is not right; steel line pad paper is too low or too high; moulding machine pressure is not properly adjusted.

Solution: readjust the height of the steel wire; check whether the steel wire selection is appropriate; appropriate adjustment of the pressure size of the die-cutting machine; according to the condition of the die-cutting machine moulding cardboard, adjust the die-cutting and creasing process conditions, so that the two are adapted to the best possible.

2. Cutting is not smooth

Reason: the steel knife material is bad, the edge is not sharp, die cutting suitability is poor; change to the untimely, edge wear and tear is serious; die-cutting machine pressure is small or pressure adjustment and knife height adjustment is not coordinated, die-cutting machine die-cutting operation is not solid.

Solution: often check the knife edge wear and tear, to achieve timely replacement of the knife; according to the cutting performance of the paper used in printing, the choice of different quality characteristics of the knife; appropriate increase in pressure; re-adjustment or replacement of the knife or pad paper, so that the die-cutting to obtain a more solid pressure effect.

3. die-cutting indentation position is not allowed

Causes: the position of the knife and the print does not meet; die-cutting operation in the paper position is not consistent; cardboard gripper rules are inaccurate; the operation of the cardboard deformation, overprinting is not allowed.

Solution: according to the sample requirements, re-correct the position of the printing plate; adjust the die-cutting paper positioning rules, so that the position with the paper to maintain consistency; for the position of the reasons, to reduce the print defects on the impact of die-cutting quality.

4. Indentation line unruly

Causes: row of knives, fixed knife tightness is not appropriate, the bottom can not be with the iron platform plane to achieve the desired contact effect, easy to appear when the indentation of twisting (steel line is too tight); indentation is easy to the left and right stringing (steel line is too loose); insufficient thickness of the steel line mat paper; groove angle is not standardised, there are redundant rounded corners; indentation groove on the steel line mat paper is left too wide, the position of the indentation is not fixed.

Solution: Replace the steel wire matting, the pressure slot to stay narrow; increase the thickness of the steel wire matting; correct the slot angle; row of knives fixed knife tightness should be appropriate.

5. Die-cutting machine after die-cutting cardboard with a knife

Causes: the pressure on the die plate is not uniform, the pressure of small places even knife; die knife blade is not sharp, resulting in even knife; paper thickness is too large, can not completely cut through the paper.

Solution: replace the mould knife according to the actual situation; increase the local pressure.




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