Analysis of five printing press brands in the hott

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Analysis of five major printing machine brands in the world (I)


as we all know, there are five major printing machine brands in the world, which are distributed in Japan and Germany. So what is the reason why these five brands are so concentrated? Looking back on history, these two countries provoked and participated in two world wars. As defeated countries waiting for prosperity, they ranked among the developed countries by virtue of their strength. Germany and Japan seem to have become synonymous with first-class printing machinery. How did they do it? The wisdom and diligence of our Chinese people are not inferior to that of any nation. Why can't we build a world-class printing press brand? Common fault 3: Well, there must be an undiscovered power deep in the blood of these two nations

this article will go deep into the veins of the spiritual and ideological fields to find those fossils that have not yet been found, and to track and reveal how the Germanic nation and the Yamato nation have built a first-class printing machine brand. This article will analyze this belief from all levels in order to "learn from foreigners and improve their skills", and firmly believe that one day, people will look up to the East with admiration and envy, "look! That's China!"

the task of faith

-- famous brands are refined in this way

Chapter 1 international advanced technology

as we all know, there are five major printing machine brands recognized in the world: Heidelberg, Roland and noble in Germany; And Mitsubishi and Komori in Japan

first of all, let's feel the advanced technical characteristics of the representative models of foreign brand sheet fed offset printing machines

section 1 technology of Heidelberg sheet fed offset press

Heidelberg offset press generally adopts step belt standard paper feeding (for start-up) or vacuum suction belt paper feeding (for four and eight start-up). The standard paper feeding machine has a stable structure and can be applied to the printing of a variety of substrate materials, while the suction belt paper feeding makes the operation and adjustment convenient and fast; The rise of the paper table adopts a stepless method, which can change the rise height according to the actual thickness of the paper, so that the relative position between the suction nozzle and the paper stack remains stable; The bottom swing paper delivery teeth can ensure that the paper delivery mechanism is simple and easy to adjust; The drum arrangement adopts the "seven o'clock" method, which is used in the printing machine with double diameter embossing drum, which can meet the requirements of drum arrangement, facilitate the transfer of paper, and is conducive to the improvement of printing quality, especially suitable for the printing of thick paperboard printing materials; The inking system adopts 21 ink rollers, which meets the inking principle of "heavy in front and light in rear", and can realize the rapid response of ink flow; The fountain system is composed of five water rollers. The water bucket roller is similar to the ink bucket roller for zoning treatment, and a row of axial adjustable blowers are used to evaporate the excess fountain solution. The moistening device has automatic speed compensation function, which can realize rapid ink balance and ensure stable water supply when the printing speed changes; The paper receiving device adopts the air blowing paper stack, and the double increase powder spraying device can make the paper stack smooth and neat, and also save 30% of the powder spraying amount

in addition, Heidelberg is also making efforts to enhance the automatic control ability of printing machines. From CPC ink remote control and registration system, cptronic printing machine integrated control system to CP2000 printing machine automatic control system, automatic monitoring and control of printing quality are realized. By configuring the full digital electronic display system, it can also realize the integrated operation and management, so that Fang xuanlai can release the micro nano scale 3D printing system technology with independent intellectual property rights, which can make the material "shrink the bone", with better product quality, shorter printing preparation time, less printer maintenance, and higher print output

section II technology of MAN Roland sheet fed offset press

Roland 700 standard printing machine adopts a pendulum front gauge and a pendulum paper transfer tooth to make the paper conveying stable and accurate; The double diameter embossing cylinder reduces the number of paper handover between multi-color units, greatly reduces the paper handover error, smoothes the surface of printed products, and reduces the point deformation during embossing; Using the "seven o'clock" drum arrangement, the printing paper can be completely stamped by the rubber drum before being handed over to the paper delivery drum, which reduces the point change and overprint problems caused by the paper handover during the printing process at the end of the printing sheet; The ink supply system uses a fast reaction ink path system with only 16 ink rollers. The ink supply method adopts the central ink supply method, and has the functions of "automatic grading adjustment" and "automatic separation of ink chain" of the main ink channeling roller. It has the characteristics of large diameter of ink rollers, good heat dissipation performance, and is suitable for high-speed printing; The wetting system adopts Roland deltanmatic triangle wine refreshing and moistening version system, which has a good effect on eliminating "ghosts" and reducing "white spots"; The use of a "one-line" paper transfer device without the barrel body and belly can prevent contact and dirt on the printing sheets, and it is not necessary to install an anti dirt cloth, which is very convenient to operate and is conducive to reducing the loss of printing products; The diagonal registration of the printing plate can be automatically adjusted by the eccentricity of the paper conveyor, and it is not necessary to adjust the eccentricity of the printing plate cylinder, so as to reduce the waste of the plate passing paper and overcome the parallelism deviation caused by the eccentric adjustment of the printing plate cylinder to the rubber cylinder and the plate ink roller

it is a major feature of Manroland printing press that a large number of pneumatic control systems are used to replace traditional mechanical devices. It uses vacuum paperboard conveying and variable-speed suction (2) according to gb/t2039 (1) 997 "experimental methods for tensile creep and durability of metals" (eqviso204:1997), belts and pneumatic side pull gauges greatly reduce the complex mechanical structure and reduce the difficulty of mechanical manufacturing, installation and debugging. The left and right positions of the paper stack and the closed position of the paper feeder can be accurately controlled by the position switch, so as to ensure the accurate overprint position of double-sided printing. In order to improve the automation of the sheet fed multicolor offset press, improve the printing quality and reduce the labor intensity, Manroland adopts the pecom control system, which can control and preset the electronic printing. When inputting data such as web thickness into the console during prepress preparation, it can automatically and accurately complete the precise and rapid pre adjustment of the front and rear high and low positions of the paper feeder flying head, front gauge, side gauge, paper receiving vacuum suction wheel, powder spraying device and printing pressure, which reduces preparation and downtime and improves production efficiency. Manroland company not only keeps forging ahead in the development field of traditional offset printing equipment, but also has attainments in digital printing. It can be seen from its independently developed DICO web web digital offset printing machine that Manroland organically combines traditional offset printing technology with modern digital printing, opening up a new path for the development of offset printing technology

Section III technology of gaobao sheet fed offset press

kba105 has a very high printing speed of 21000 sheets/hour design speed. In addition to adopting the currently popular downward swing paper delivery, downward swing front gauge, double diameter imprinting cylinder, air cushion paper transfer, automatic centering of paper table, and pneumatic paper receiving device, it also created the "four lifting and six feeding" paper feeding Feida. The blowing and suction nozzles can be electrically adjusted, making the adjustment faster and more convenient, and the paper feeding more stable and accurate; Vacuum paper feeding can realize four stages of variable speed paper transfer. The four air chambers can ensure that the suction pressure near the paper feeding table is large, and the air pressure near the front gauge end is zero, realizing the speed change required for paper handover; Pneumatic side pull gauge can realize accurate positioning, and the paper pulling is not in place with photoelectric control; Ultrasonic double sheet detection device is very beneficial to thick paper, special printing materials and printing products with thick ink color; The inking device adopts a single ink path inking system with five plate rollers with different diameters. The ink channeling rollers can be pumped and channeled to eliminate the "ghost". The number of ink rollers is small (15), and the diameter is large, which can realize the rapid change of printing ink color, reducing the waste of paper and cleaning time; The wetting device adopts linear water transmission, which can be applied to ordinary wetting and alcohol wetting at the same time; The paper transfer and embossing cylinder adopts "anchor claw" teeth, which can eliminate the necessary adjustment of tooth row during the conversion of thick and thin paper in the printing process; The version loading mode can be fully automatic (with plate feeding and receiving box) or automatic version loading (with plate feeding box), which reduces the downtime and auxiliary time and improves the production efficiency; The diagonal registration adjustment can be carried out by using the paper transfer drum, without the unilateral deflection and displacement of the printing plate drum, so as to ensure the operation accuracy of the printing machine

in order to increase the stability of the machine operation, improve the operation accuracy and ensure the printing quality, kba105 also adopts the integrated casting of the lower body and the installation of T-shaped wallboard, which not only reduces the vibration of the machine, but also solves the problem of lubricating oil leakage

Section IV technology of Komori sheet fed offset press

the paper feeding device of Komori printing press adopts an eight nozzle design, which can realize stable transportation of 0.04mm -0.8mm thick paper; The mechanical, photoelectric and inductive double sheet and empty sheet detection devices are used to control the printing faults such as skew, double sheet and empty sheet in the paper feeding process, so as to ensure the accuracy of paper conveying; The paper delivery mechanism is equipped with an anti loose tail device on the swing paper delivery tooth shaft to compensate for the loose tail of the paper; Double diameter embossing drum and double diameter paper delivery drum are also used, which can meet the requirements of printing materials and printing quality; The tooth shaft on the transfer paper drum adopts a large-diameter torsion bar tooth shaft, which can increase its strength, improve safety and stability, and the paper feeding tooth pad adjustment device can make a rapid response to thick and thin paper, reducing the adjustment time; Due to the use of roller bearings with special tightening for ± 0.2mm deflection, the diagonal registration adjustment of the printing plate can be achieved through the axial deflection of the printing plate cylinder; The inking system adopts the long ink path method, which relies on four plate rollers with different diameters and four ink channeling rollers to ensure the uniformity of printing plate ink color; The water delivery system adopts the five roller continuous water supply mode of reverse water transmission, which can directly provide stable and uniform fountain solution for the layout; The paper receiving adopts the anti deflection device of the printing sheet, and is also equipped with a double paper receiving device that can automatically separate the problematic printing sheets

Section V technology of Mitsubishi sheet fed offset press

Mitsubishi sheet fed offset press mainly includes F series, H series and diamond series. The printing speed of 3F series offset press is 13000 sheets/hour, and the maximum printing speed of 3H series and diamond 3000 series offset press can reach 16000 sheets/hour

Mitsubishi Diamond (diamond5, filter:) 3000 series offset press. In addition to the widely used double diameter embossing drum, "seven o'clock" drum arrangement and automatic and semi-automatic version, the Feida device adopts simulation design technology and has been optimized to realize the smooth separation of 4.5 sheets/second in various specified sizes; Adopting vacuum variable speed paper feeding and vacuum paper feeding adjustment can realize stable paper feeding and accurate handover; The use of new ink keys reduces the contact between ink and ink bucket keys, making it sensitive and easy to clean; The ink channeling shaking stop mechanism can ensure that the ink channeling stops when the machine is idling, and reduce the waste sheets and wear of the mechanism when resuming printing; The use of ink roller temperature control system can keep the temperature of the surface of the ink roller unchanged, reduce the ink color deviation of the print, and stabilize the printing quality; The wetting system can carry out triple transformation, reduce the ink color deviation of printing, and stabilize the printing quality; The wetting system can carry out triple transformation to adapt to the wetting methods required by various printing patterns; The flip roller gripper adopts double gripper structure, which can ensure high-precision paper feeding and turnover; The paper receiving device adopts thick and thin vacuum deceleration paper receiving roller and paper receiving pneumatic chamber, which ensures that the printing sheets of various specifications can be collected stably and reduces scratches and dirt

in order to establish the prepress system

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