1. A high-precision digital flexible printing forming process is characterized by comprising the following steps:

1) performing color analysis on the printing task through a flexible printing digital process management module and then arranging a printing color sequence; counting the printing areas of different colors, and presetting the pressure between the ink distributing roller and the anilox roller in different printing units according to the principle that the larger the printing area is, the smaller the pressure between the ink distributing roller and the anilox roller is, and the smaller the printing area is, the larger the pressure between the ink distributing roller and the anilox roller is;

2) cleaning the printing unit, then installing a flexible printing plate, and inking the printing unit according to a printing color sequence;

3) performing corresponding pressure adjustment on the pressure between the ink distributing roller and the anilox roller according to the preset value of the pressure in the step 1;

4) printing and proofing are firstly carried out, and after the printing and proofing are finished and the test is finished, the formal printing procedure is carried out.

2. The high precision digital flexo forming process according to claim 1, wherein the pressure adjustment between the distribution roller and the anilox roller is achieved by moving the distribution roller, controlling the distance between the distribution roller and the anilox roller.

3. The high-precision digital flexographic forming process according to claim 1, characterized in that an ink distributing roller in a printing unit adopts a pneumatic pressure regulating roller with adjustable pressure, the pneumatic pressure regulating roller comprises a roller core, an inflatable rubber layer with adjustable pressure and an ink distributing rubber layer, the inflatable rubber layer is sleeved on the roller core, the ink distributing rubber layer is sleeved on the inflatable rubber layer, the end part of the inflatable rubber layer is provided with an air valve, the air valve is connected with an air pump through an air pipe, and the air pump is right to the inflatable rubber layer for pressure regulation.

Background

Flexographic printing is a printing technique in which a rubber printing plate prints onto a variety of corrugated paper, thick paper bags, and film printing materials having uneven surfaces. Because the environmental protection performance of the flexographic printing technology is excellent, the flexographic printing technology is rapidly developed as a main printing mode of packaging printing. With the rapid development of digital technology, internet technology and electronic publishing technology, various printing processes all need to complete various processing treatments by prepress technology. The rapid development of the digital prepress technology, the innovation and the change of prepress software and hardware are more frequent, various color management schemes and digital work flow software are layered endlessly, and creative application is needed.

For the flexo printing process, the pressure of the ink distributing device refers to the pressure between the ink distributing roller and the anilox roller, and the pressure mainly has the function of controlling the size and the uniformity of ink transfer. The pressure between the two rollers is large (the gap is small) and the amount of ink on the anilox roller surface is relatively small, whereas the amount of ink is large otherwise. The magnitude of the printing pressure is related to the magnitude of the printing area, and generally, the pressure with larger printing area can be lighter, so as to increase the amount of ink to improve the thickness and the vividness of the ink layer. The pressure of the relatively fine and small characters and patterns with small printing area is slightly larger to reduce the ink amount and improve the definition of the small characters, and the principle of the pressure is generally determined according to the characteristics of the product. When the screen dot is printed, the pressure is relatively large, the pressure of the lines of the small characters can be slightly large, and the pressure of the products of the large characters and the large real land can be relatively small.

Therefore, how to improve the printing precision through pressure control is an urgent technical problem to be solved in the industry.

Disclosure of Invention

The invention mainly aims to provide a high-precision digital flexible printing forming process, aiming at arranging printing tasks through a digital flow management module and realizing high-precision printing.

The invention provides a high-precision digital flexible printing forming process, which comprises the following steps:

1) performing color analysis on the printing task through a flexible printing digital process management module and then arranging a printing color sequence; counting the printing areas of different colors, and presetting the pressure between the ink distributing roller and the anilox roller in different printing units according to the principle that the larger the printing area is, the smaller the pressure between the ink distributing roller and the anilox roller is, and the smaller the printing area is, the larger the pressure between the ink distributing roller and the anilox roller is;

2) cleaning the printing unit, then installing a flexible printing plate, and inking the printing unit according to a printing color sequence;

3) performing corresponding pressure adjustment on the pressure between the ink distributing roller and the anilox roller according to the preset value of the pressure in the step 1;

4) printing and proofing are firstly carried out, and after the printing and proofing are finished and the test is finished, the formal printing procedure is carried out.

Preferably, the pressure adjustment between the ink distribution roller and the anilox roller is achieved by moving the ink distribution roller, controlling the distance between the ink distribution roller and the anilox roller.

Preferably, even ink roller in the printing unit adopts pressure adjustable pneumatic pressure regulating ink roller, pneumatic pressure regulating ink roller includes roller core, adjustable pressure's the rubber layer and the even black rubber layer of aerifing, it is in to aerify the rubber layer suit on the roller core, even black rubber layer suit is in aerify on the rubber layer, it is equipped with the pneumatic valve to aerify the rubber layer tip, the pneumatic valve passes through the trachea and is connected with the air pump, through the air pump is right it carries out pressure adjustment to aerify the rubber layer.

The invention has the beneficial effects that:

the high-precision digital flexible printing forming process provided by the invention carries out color analysis on a printing task through a flexible printing digital flow management module, then arranges printing color sequences, and counts the sizes of printing areas with different colors, and presets the pressure between an ink distributing roller and an anilox roller in different printing units according to the principle that the larger the printing area is, the smaller the pressure between the ink distributing roller and the anilox roller is, and the smaller the printing area is, the larger the pressure between the ink distributing roller and the anilox roller is; and before printing, inking and pressure regulation are carried out on each printing unit according to the preset values of the color sequence and the pressure, so that a better printing effect is achieved, and the precision is improved.

Detailed Description

It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

An embodiment of the high-precision digital flexible printing forming process is provided:

a high-precision digital flexible printing forming process comprises the following steps:

1) performing color analysis on the printing task through a flexible printing digital process management module and then arranging a printing color sequence; counting the printing areas of different colors, and presetting the pressure between the ink distributing roller and the anilox roller in different printing units according to the principle that the larger the printing area is, the smaller the pressure between the ink distributing roller and the anilox roller is, and the smaller the printing area is, the larger the pressure between the ink distributing roller and the anilox roller is;

2) cleaning the printing unit, then installing a flexible printing plate, and inking the printing unit according to a printing color sequence;

3) performing corresponding pressure regulation on the pressure between the ink distributing roller and the anilox roller according to the preset value of the pressure in the step 1;

4) printing and proofing are firstly carried out, and after the printing and proofing are finished and the test is finished, the formal printing procedure is carried out.

Wherein, the printing color sequence can be ordered according to the transparency of the ink,

firstly, judging whether the warm tone mainly comprising red, orange and yellow or the cool tone mainly comprising green and blue according to the whole color basic tone of the printing task, and printing black, cyan and red and yellow firstly and then according to the warm tone mainly comprising the ink with covering power; the color of the ink is printed with red and then with cyan mainly by cold tone. The picture color atmosphere requires that the color to be emphasized be placed in the final color print. On the basis of the sorting, the color order is arranged according to the transparency of the ink, and the ink with low transparency is printed first. The ink with low transparency is printed first, and other colors cannot be covered; and after the two colors are overprinted, the color light of the lower ink layer can penetrate through the upper ink layer to achieve better color reduction and mixing and display a correct new color.

The pressure adjustment between the ink distributing roller and the anilox roller can be realized by moving the ink distributing roller and controlling the distance between the ink distributing roller and the anilox roller.

Or the ink distributing roller in the printing unit adopts a pneumatic pressure regulating roller with adjustable pressure, the pneumatic pressure regulating roller comprises a roller core, an inflatable rubber layer with adjustable pressure and an ink distributing rubber layer, the inflatable rubber layer is sleeved on the roller core, the ink distributing rubber layer is sleeved on the inflatable rubber layer, an air valve is arranged at the end part of the inflatable rubber layer and connected with an air pump through an air pipe, and the air pump is used for carrying out pressure regulation on the inflatable rubber layer. When the pressure needs to be increased, the rubber layer is inflated by the air pump before printing, so that the rubber layer is expanded, the gap between the ink distributing roller and the anilox roller is reduced, and the pressure between the two rollers is increased. When pressure needs to be reduced, the rubber layer is pumped by the air pump before printing, so that the size of the rubber layer is reduced, the gap between the ink distributing roller and the anilox roller is increased, and the pressure between the two rollers is reduced.

The pressure between the two rollers is high, the ink amount on the anilox roller surface is relatively small, otherwise, the ink amount is large. When the printing area is larger, the pressure between the two rollers is reduced to increase the amount of the ink to improve the thickness and the vividness of the ink layer. When printing fine characters and patterns with small area, the pressure is slightly larger to reduce ink amount and improve the definition of fine characters or lines.

The high-precision digital flexible printing forming process provided by the invention carries out color analysis on a printing task through a flexible printing digital flow management module, then arranges printing color sequences, and counts the sizes of printing areas with different colors, and presets the pressure between an ink distributing roller and an anilox roller in different printing units according to the principle that the larger the printing area is, the smaller the pressure between the ink distributing roller and the anilox roller is, and the smaller the printing area is, the larger the pressure between the ink distributing roller and the anilox roller is; and before printing, inking and pressure regulation are carried out on each printing unit according to the preset values of the color sequence and the pressure, so that a better printing effect is achieved, and the precision is improved.

The above description is only for the preferred embodiment of the present invention and is not intended to limit the scope of the present invention, and all equivalent structural changes made by the present specification or other related technical fields directly or indirectly are included in the scope of the present invention.