Rotary gravure printing equipment is mainly divided into three parts: unwinding part, printing part and post-printing part. The function of the unwinding part is to ensure the normal and effective splicing anti-counterfeiting printing of the paper roll under high-speed operation and ensure continuous paper supply; the printing part is the core part of the rotary gravure printing equipment, and its function is to complete the transfer, registration and drying of various colors; There are three basic methods of post-press processing, such as rewinding, cross-cutting and die-cutting, the importance of which has become increasingly prominent.
After the development in recent years, the level of domestic machine manufacturing and control has been continuously improved, and the gap between imported rotary gravure printing equipment and domestic rotary gravure printing equipment is getting smaller and smaller.
(1) The unwinding part of imported and domestic equipment can ensure the normal unwinding and publishing dynamics, and the splicing speed is greater than 200 meters / minute, which can realize zero-speed static splicing.
(2) There is no gap in the main technical indicators between imported equipment and domestic equipment, such as: the printing speed is greater than 250 meters / minute, and the registration accuracy is within ± 0.1mm (the test pass rate is not less than 96% under stable speed) .
(3) Both imported and domestic high-speed rotogravure printing equipment adopt electronic shaft transmission.
(4) The configuration of domestic equipment is becoming more and more perfect. It is equipped with roll-to-roll, roll-to-cut large-sheet, roll-to-rotary die-cut digital printing machines, and its accuracy can reach the level of imported equipment.
(5) The normal winding speed of the roll-to-roll configuration of domestic equipment and imported equipment can reach 200 meters per minute; the precision of cross-cutting large sheet can reach ± ​​0.15mm (the pass rate at steady speed is not less than 96%), working speed Up to 180 meters / minute; die cutting accuracy reaches ± 0.15mm (pass rate at steady speed is not less than 96%), working speed reaches 180 meters / minute.
(6) The registration system and electronic shaft drive system selected for domestic equipment are imported from Japan or Germany. There is no gap in the control system technology between domestic equipment and imported equipment.
In the performance comparison with foreign rotary gravure equipment, we can also see some advantages of domestic equipment.
(1) Domestic equipment has better cost-effective management, and the price of imported equipment is generally more than three times the price of domestic equipment.
(2) After continuous technological innovation and integration, domestic equipment manufacturers have been able to install specific and targeted configurations for each printing plant in a timely manner.
(3) Domestic equipment manufacturers often provide more convenient after-sales service and lower maintenance costs.
Of course, we also see that domestic equipment still has many shortcomings.
(1) The level of domestic machinery manufacturing needs to be improved.
(2) The reliability of the equipment needs to be improved.
(3) The equipment failure rate is high.
(4) The convenience, safety and humanization of equipment operation need to be improved.
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