A printing slotting die-cutting machine is a specialized piece of machinery that combines die-cutting, slotting, and printing to process packaging materials like cardboard boxes and cartons. The following fundamental connections' cooperative collaboration serves as the foundation for its operating principles:
1. Section for printing
Principle: Ink is applied to the substrate's surface (such corrugated cardboard) via the printing plate when using offset printing technique or flexographic printing, which are both widely used.
Important actions:
Plate cylinder: Put in a patterned plate and use a mesh roller to move ink.
Multicolor overlay: Several printing units overlay various colors one after the other in a sequential manner, necessitating exact alignment.
Drying system: UV curing or hot air are used to guarantee quick ink drying.
2. The slot area
Its purpose is to cut the cardboard's folding groove lines for later molding.
Principle of operation:
Slotting blade shaft: It cuts longitudinally (slotting) and indents transversely on cardboard using revolving upper and lower blades.
Crimping wheel: To guarantee accurate cardboard box folding, press out creases at preset locations.
Mechanism for adjustment: The blade position can be manually or automatically changed to fit the cardboard box's dimensions.
3. Section for die cutting
Function: Use molds to cut cardboard into precise shapes, like irregular paper boxes.
mode of operation:
Flat die cutting: For one-time stamping and shaping, a flat die is paired with a pressure platform.
Effective circular die cutting: The anvil roller and spinning die cutting drum work together to provide continuous cutting that can handle enormous amounts.
Waste cleaning procedure: To preserve the final product after die-cutting, the leftovers are eliminated using a waste cleaning machine.
4. The location and transmission system
Principle of synchronization:
Gear/servo drive: To prevent misalignment, make sure the die-cutting, slotting, and printing units operate synchronously.
Feed positioning: Use mechanical gauges or photoelectric sensors to regulate the cardboard feed location.
Phase adjustment: To guarantee alignment between the die-cutting position and the pattern, each unit can be independently fine-tuned.
5. Control by automation
Core control: The operations of multiple modules are coordinated by a PLC or CNC system to accomplish:
Speed matching: Modify the machine's speed based on the thickness of the material.
Pressure control: For various cardboard types, modify the die-cutting depth and printing pressure.
Automatic alerts for problems like paper jams and blade wear are known as fault detection.
Workflow Example Feed: The printing unit automatically receives the cardboard.
Printing: Sequential overlaying of multiple colored patterns.
Slot indentation: Press out the fold line after cutting the slot.
Die cutting: waste material elimination and contour shaping.
Discharge: Moving completed goods to the following step, such as stacking them.
An overview of the main ideas
Priority for accuracy: Generally, the printing error must be kept to ± 0.5 mm.
Balance between quality and efficiency: It is essential to make sure that the die-cutting edges are burr-free and smooth during high-speed production.
Adaptable design It works well with cardboard of various thicknesses and compositions (e.g., E-corrugated/B-corrugated paper).
The forming quality and production efficiency of cardboard boxes are directly impacted by the performance of this kind of equipment, which is widely employed in the packaging sector.
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