Computer control unit type gravure printing machine control principle
The computer-controlled unit-type gravure printing machine is designed and manufactured according to the advanced gravure printing equipment and gravure printing process at home and abroad, and the printing width is 800mm and 1050mm respectively. This series of products is beautiful in appearance and easy to operate. It is suitable for one-time continuous multi-color printing of various roll-type plastic films, paper, cellophane and other packaging materials. The ink has the characteristics of high glossiness, strong tinting strength, good color reproducibility and high printing durability; it is an ideal model with excellent printing quality, moderate price and low cost of use, especially suitable for long-running jobs with large printing volume. Such as anti-counterfeiting printing of packaging in cigarette, wine and pharmaceutical industries.
This rotogravure printing machine (300m/min) is of electronic line shaft (ELS) drive that the servo motor of each print unit is able to combine with printing plate directly with high overprinting precision, printing speed and environmental conservation.
This rotogravure printing machine (140m/min) is suitable for some users who just start flexible packaging business with high efficiency cost and printing performance. Any questions, please don’t hesitate to contact
This rotogravure printing machine (140m/min) is commonly applied on different kinds of plastic film printing such as PE, PP,OPP,NY and laminated plastic film,etc. Any doubt, please don’t hesitate to contact us
The basic working principle of computer-controlled unit type gravure printing machine: the whole machine is composed of unwinding device, unwinding traction unit, transmission system, printing unit, ink supply mechanism, drying device, winding device, and tension control of the whole machine. The substrate is brought into the printing unit by the unwinding and pulling unit. The main drive composed of variable frequency speed regulation motor, transmission shaft and connecting gear transmits its power to each printing unit. At the same time, each printing unit is equipped with an independent ink tank device, which continuously supplies ink of a certain viscosity to the surface of the plate roller, and copies the ink to the surface of the substrate through the scraping device. The main drive drives the plate rollers of the unit to run synchronously through each gear to complete the printing action. Then it is quickly dried by heating drying box and natural drying box, and finally comes out into printed matter through winding device. The whole process is controlled and automatically adjusted by industrial computer.
Computer-controlled unit type gravure printing machine performance characteristics:
● The roller core is air-supported.
● Rewinding and unwinding device: The automatic rewinding and unwinding material transfer device realizes the material change without stopping, which greatly saves the time of replacing the new paper roll and improves the production efficiency of the machine.
● Tension control: The tension system adopts servo motor control, and the winding adopts frequency conversion motor control.
● Transmission part: The main motor speed control adopts frequency conversion speed regulator and is equipped with precision gears. The transmission precision is high, the noise is low, and the whole machine runs smoothly.
● Printing unit:
a、Pneumatic clutch pressure mechanism is used to precisely adjust the printing pressure: the printing pressure is pneumatically clutched, and has the function of protection and locking, and the pressure can be adjusted arbitrarily.
b、The angle of the squeegee is three-dimensionally adjustable, and the squeegee is provided with an axial reciprocating movement mechanism to change the trajectory of the squeegee on the printing plate to achieve better printing results, and at the same time to make the squeegee wear evenly and extend the squeegee. service life.
c、The printing wall plate is made of thickened high-density cast iron, with good shock absorption performance, which lays the foundation for the high-speed operation of the machine.
d、In the printing section, the wrap angle of the embossing rubber roller is reduced to prevent the deformation of the film during high-speed printing.
● Ink supply system: It adopts the most advanced pneumatic diaphragm pump inking ink tank device in China. Achieve sufficient ink absorption in the concave part of the printing plate to ensure better image effect. The device forms an ink supply circulation system, Since the ink is continuously stirred, the ink in the fuel tank can be fully utilized, and the effect is better.
● Drying system: In order to adapt to the characteristics of plastic film gravure printing and the requirements of making the ink dry quickly on the plastic film, this machine is equipped with a heating drying box and a cooling drying box on each printing unit, and adopts a sealed high-efficiency hot air. Circulating drying system, the drying temperature is automatically controlled by the temperature controller, and the electric heating power is increased or decreased according to the needs of the printing work.
● Automatic registration system: It is equipped with a high-precision automatic registration control device, so that the machine will enter the automatic working state when it is started, which reduces the chance of rejection rate and effectively guarantees product quality.
Epilogue
If you need a gravure printing machine, you can contact us and we will offer you the best price!