At present, the application of electronic technology is developing rapidly, and the flexible packaging industry is no exception. More and more electronic technologies are applied to flexible packaging production equipment. Domestic electronic shaft gravure printing machine has become a hot topic, so system optimization has become an indispensable part.
Main measures for optimization of electronic shaft gravure printing system
To do a good job in the system optimization of the electronic shaft gravure printing machine, we must start from the following aspects.
1. Optimization of the drying system
When using the electronic shaft gravure press, the efficiency of the oven should be increased as much as possible, so that the equipment can be dried with a lower drying temperature and a reasonable wind speed, thereby reducing the possibility of tensile deformation of the printing material.
2. Optimization of the scraper system
When designing and manufacturing the electronic shaft gravure printing machine, the rigid design of the scraper system should be improved as much as possible, and the interference and resistance of the scraper vibration and pressure to the plate roller should be reduced, thereby improving the sensitivity and precision of the plate roller phase adjustment during overprinting.
3. Optimization of printing unit pressure roller
In the adjustment process of the plate roller phase, the interference of external force should be minimized. To achieve this goal, the optimization of the printing unit press rolls is one of the important tasks. How to achieve perfect transfer of ink under low pressure and reduce the influence on the phase adjustment of the plate roller is the key to the optimization of the pressure roller.
4. Optimization of servo motor drive design
According to the registration principle of the electronic shaft gravure printing machine, it can be seen that how to reduce the gap between the servo motor and the plate roller connecting transmission is also one of the key factors determining the quality of the electronic shaft gravure printing machine. Foreign mature electronic shaft gravure printing machines use high-torque, low-speed servo motors and special soft non-gap couplings. Try to use direct transmission to achieve accurate plate phase adjustment.
5. The basic principle of software programming is to reduce and absorb the inevitable impact of the plate roller phase adjustment process on the tension of the printing material. In the software programming process, when designing the instruction of the roller phase shift, the following should be observed as much as possible. The basic principle.
(1) Encrypt the adjustment frequency to minimize the amplitude of the phase adjustment of each plate.
(2) During the acceleration and deceleration process, increase the adjustment point as much as possible to make the acceleration and deceleration curve as smooth as possible.
(3) For different substrates, different acceleration and deceleration curves should be designed according to their different physical properties.
(4) The control software should have a memory function to facilitate the control of repeated orders to achieve a stable working effect.
6. Changes in user operating habits
Since the electronic shaft gravure printing machine is different from the conventional mechanical shaft gravure printing machine, the user must also change some operating habits during the operation.
(1) The user should understand the working principle of each functional system of the electronic shaft gravure printing machine.
(2) The operating temperature of the oven should be kept as low as possible while ensuring the synchronization of the line speed of the chill roll and the film feed speed.
(3) A high-quality printing press roller with appropriate hardness and uniformity should be selected, and the pressure on the plate roller should be lowered as much as possible.
(4) Select a reasonable scraper angle and minimize the scraper pressure.
(5) Develop a good habit of recording process parameters, which is convenient for repeated orders.
　　 The above content is selected from the third issue of 2011, Printing and Printing , Packaging and Decoration, and more journal content. Please pay attention to the journal channel.
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