For cardboard box factories, fully automatic printing slotting die-cutting machines are the most important equipment, and choose the right product is very important. So, before you buy a equipment, what points you need to consider? The following suggestions maybe can help you.
1、 Looking at "Order Structure": Fixed or Mobile
Mobile (or "open close")
Suitable for factories with long orders, large orders, and low frequency of order changes.
Features: Mature technology, low cost. However, all units must be "exploded" and relocated when orders are changed, which takes a lengthy time (approximately 5–10 minutes).
If you select the incorrect option: The mobile model will spend a lot of time on order updates if your firm just has a few hundred individual orders and modifies dozens of versions daily.
Fixed type (no overall movement is required; each unit servo is independently controlled)
Appropriate for: urgent orders, large orders, and short orders (now common in e-commerce logistics).
Features: Expensive, but order changes quickly (1-2 minutes). Use "non-stop order replacement" or quick version hanging.
Select the appropriate metric: Fixed type is recommended if your typical order length is less than 2000.
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2. Verifying "Precision": Alignment of Die Cutting and Printing
This is an expression of the hard power of the machine. An increase in scrap rates may result from selecting the incorrect option.
Select the appropriate criteria:
Do you have "full adsorption assisted paper feeding" or pressure-free paper feeding? Otherwise, angled cardboard is prone to bending, which can lead to incorrect color matching in printing.
Accuracy of die cutting: Reputable machines may be adjusted within ± 0.5mm. Inadequate machinery can cause "size shaking" or "cut edge burrs" on the cardboard box when the die-cutting blade deviates during order changes or high-speed operation.
Avoiding pitfalls: At low rates, many inexpensive machines provide respectable accuracy; but, if the speed surpasses 120 frames per minute, the accuracy drastically decreases. Make careful to test run the machine at a high speed before making a purchase.
3. Verify whether the "paper delivery method" is top printing or bottom printing.
Printing on top (the cardboard passing underneath and the printing roller on top)
Right now, this is the norm. Ink is easy to clean, difficult to splatter, and appropriate for high-definition watermarking.
Bottom printing (below the printing roller)
The majority of the models are out of date. The primary issue is that the printing surface is easily scratched, and the pit is prone to ink buildup and challenging to clean.
In conclusion, give printing top priority when purchasing a new machine.
4. Refer to "Key Configuration" (which directly impacts longevity and effectiveness).
Many individuals simply pay attention to the iron sheet's appearance, but they need also consider these essential elements:
Gear and shaft:
Regular straight teeth is the incorrect option. printing phase drift, rapid wear, and high noise.
You're correct: helical grinding gear made of alloy steel. Wear resistance, smooth transmission, and long-term high precision maintenance.
system of control
PLC+servo independent drive is required (each unit has a separate motor). The outdated mechanical long-axis linkage is essentially no longer in use.
System of lubrication:
Automatic forced lubrication is a must. Artificial lubrication? In a few days, employees will probably wear it out and forget about it.
5. Examining the "Die Cutting Department": The Easily Ignored Trap
Die-cutting is frequently the issue, not printing slotting.
Rubber pad (anvil pad) technology: If it is fixed, the rubber pad will be cut into deep grooves after a few days, causing the edges of the paper or cardboard box to crush without cutting; if it is a single spiral or automatic lateral movement (with servo compensation), it can be used for one to two years.
Rubber pad grinding device is a necessary function. It can prevent "continuous cutting" or "broken lines" in the cardboard box by keeping the rubber pad's surface flat.
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