ROC is a full-servo high speed flexographic printing machine that DH has introduced in recent years to meet the needs of the high-end market.
With the continuous development of flexographic printing technology, high-end customers have higher requirements for the automation degree, operating efficiency and printing quality of flexo printing machines. Traditionally designed flexo presses have gradually failed to meet these requirements.
According to customer requirements, the design speed of the ROC is 450m/min, and the actual running speed can reach 350–450m/min. According to the customer’s field use test, the machine can maintain continuous and stable operation at high speed.
The DH-ROC high speed flexographic printing machine is equipped with advanced technology in many industries to ensure its high speed and stability:
1. Sleeve technology, quick job change
Adopts sleeve technology of plate cylinder and anilox roller (optional) to achieve fast job change.
2. Gearless drive system
Each printing station is driven by 8 servo motor to avoid gear wearing when running at high speed.
Thanks to the gearless drive system, ROC has a great job repeatability. It can record and recall: register position, pressure setting, tension etc.
3. Turret auto splicing system
ROC adopts turret auto splicing system on unwinder and rewinder. The unique design can guarantee splicing stability.
4. High efficiency hot air drying unit
After printing, substrate goes up and pass the high efficiency drying unit to achieve high running speed. Cover of drying unit can slid out for substrate threading and hot air is recycled to lower down power consumption.
5. Inline 100% quality inspection system
ROC adopts inline quality inspection system. Once defect is found, system will give an alarm and record relevant information.
6. Chamber inking system
The chamber doctor blade system can guarantee inking stability. Meanwhile, together with inline anilox roller cleaning system (optional), it can greatly lower down cleaning time and cost.
7. Intelligent control system
* Register position record/recall
* Printing pressure record/recall
* Tension record/recall
* Pre-register function
* Pressure compensation when running at high speed.
* Inline quality inspection system
* Auto register system
* Closed-loop tension control
The launch of the DH-ROC high speed flexographic printing machine represents DH’s true mastery of the core technology of high-end flexo printing.
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