writer：admin pubdate：2017-03-13 click：1599
A, four-color offset press has become the darling of the market gradually
Before the exhibition of domestic offset press are mainly composed of single, double color, four-color offset printing machine market has been controlled by foreign manufacturers. That almost all of the all India exhibition offset press exhibitors introduced a four-color offset press, from eight open four-color, four open four-color folio four-color and all four color, some manufacturer also launched a five-color machine. Displayed in the proportion of the traditional single and two-color offset press greatly reduce user expectations of four-color machine is much higher than expected of single and double color machine. , according to the manufacturer to reflect the four-color machine of each manufacturer orders almost all rows to three months after some have even to the end of the year. Four-color machine by qing mei associated with years of market cultivation. In the past decades are mainly composed of single, double color printer market in China a lot of printing at the start to purchase the single and two-color machine, they through many years of accumulation has had certain capital, just reached the purchase of domestic four-color machine power and this is the current domestic four-color machine is the main reason for the market.
Second, the machine's performance improved steadily
Now the domestic printing press to be able to on-site printing performance that stop-and-go era is over. Accurate overprint under prescribed speed has not become a major problem, the scene show proof overprint error can be controlled within 0.05 mm, the speed of the machine can reach more than 10000 r/hour. Field of printing, flat screen printing quality has improved significantly. The noise of the machines in basically can meet the standard requirements. Especially commendable is northerners launch volume Jane paper printing machine speed of 75000 copies per hour has reached the advanced level of similar products abroad.
彩翼无遮挡漫画Three, the structure of the machine design more and more close to international level
Many domestic manufacturers all India exhibition display equipment in the structure design in addition to their original accumulation of technology and absorb foreign advanced technology and increase a lot of independent innovation technology makes the machine structure design level has increased significantly. Pendulum under the former rules, embossed paper institutions times diameter and transfer paper drum, pneumatic control (clutch pressure, ink road interlocking institutions, etc.) pneumatic transmission board, conjugate CAM drive mechanism in spring of diao tooth mechanism alcohol wetting, automatic or semi-automatic version on institutions such as basically have become the mainstream of modern printing machine structure.
Fourth, is gradually improve degree of automation
彩翼无遮挡漫画Domestic printing machine automation degree increased significantly with the production of yingkou guanhua offset press for example, to configure the CPC on the eight open four-color offset press ink device, can be directly through the work station to control the size of the various group of ink, the current domestic small offset printing machine manufacturer or by the institutions for the first time. Its latest made eight open four-color offset press has also been equipped with a fully enclosed ink quantity control device, through the signal on the scanning head scanning sample article can automatically adjust the ink fountain gap size. LCD touch screen control, etc are used widely in printing equipment. Automatic version of the electric play away L has gradually become the standard configuration of the printer, the level is close to the advanced level of similar products abroad.
Five, the design quality has improved significantly
All the all India exhibition on the appearance quality of the equipment are improved obviously, silly Big Ben is one of the few coarse product, some devices even it is hard to tell is domestic or foreign production at the first sight. Color appearance style aspects such as man-machine engineering design is to consider more comprehensive than before.
Manufacturer's equipment level gradually improve the printing machine parts manufacturing accuracy in addition to the associated with the level of operators key must have the high precision equipment. Almost every manufacturer is known to be more than 1 ~ 2 sets of processing center some manufacturers and pentahedron machining center. Numerical control processing equipment has become one of the main equipment parts processing. Some factory has introduced the high precision grinding machine the gear machining accuracy can reach more than 4 (the largest diameter can be processed more than 1 m gear) than the previous equipment an order of magnitude higher than that of the machining accuracy has reached the international advanced level of similar products processing.
彩翼无遮挡漫画Times the diameter of roller diao axis of tooth position of equal error can be controlled below 0.02 mm can completely meet the requirements of roller transfer paper. The quality of the products in addition to related to design, also with machinery manufacturing processing have a close relationship. As usual often find the same machine running condition is very good, some are very poor. Sometimes factory used way is to tear down heavily. Results after reshipment quality and original is different. The causes of this phenomenon is often hard to say clearly, the result is often dismissed, had the same problem next time or use such a solution. By comparing and many of his peers exchanges views of concentration is where the process problems. Printing machine spare parts is more, if a component is unqualified, may lead to other components working status also unqualified result finally cause the machine state is unqualified. As some manufacturer said, a lot of our parts is not enough strict standards, many parts we think is qualified. According to the foreign standards most not qualified. So to ensure the consistency of product, it is necessary to further improve the machining precision of the key components, in addition to the necessary assembly tools of installation. All have dedicated testing equipment with data.
Six, high-speed dynamic performance testing is imperative
彩翼无遮挡漫画Precision testing basically all we do is currently under the static and dynamic testing in addition to the noise or other is by visual sense to judge. Especially when the machine in a certain period of speed work is difficult to find a speed work abnormal internal reasons. Have the big foreign advanced printing equipment and scientific research institutes cooperation, carried out dynamic detection. As a German manufacturer of printing equipment made the tools and analysis, through the modal analysis of machine the weak links on the further improvement design, reduce or reduce the likelihood of its cause failure. A Japanese manufacturer of roller high-speed dynamic design by using vibration absorbing device absorbing vibration generated by the high speed condition. With the improvement of machine speed, press the dynamic design technology is imperative.
Seven, automatic version
Cocking technology still need to actively promote the domestic existing parts manufacturer adopted in automatic or semi-automatic version. But most of the factory is mainly on the manual version. Although equipped with electronic punching device. But the production efficiency is not high. Cocking roller technology (or suspension pass paper drum technology) USES much less, only a few manufacturers to master the technology. If you want to compete with foreign equipment. Cocking roller technology must be used, this is the foreign standard configuration of the equipment. From the point of our national conditions. Better is to use the semi-automatic version. Full version. This can not only realize fast version. And to minimize the cost of production. From the perspective of cocking roller. Generally, oblique at around 0.2 mm is enough. Too big also no sense (mainly electronic punching accuracy can now control most of the time within 002 ~ 0.03 mm plate installed with a simple adjustment to alignment rules). Due to the suspension after roller machine can produce micro vibration. Suspension measured in general will seriously influence the quality of printing quality. So now have the cocking technology. The location of the plate automatically adjust the roller. Single and double color machine is not necessary to adopt the technology. More than four color machine using the technology to improve the production efficiency significantly. Many users reflect after using this technique can basically aim rules in 20 minutes. Not using this technology to find the rules they spent at least half an hour. Usually takes more than an hour. Requires high accuracy sometimes need more than two hours. Now printing wages is low. By improving the efficiency to reduce costs has become a strong requirements of users.
彩翼无遮挡漫画Eight, comprehensive using electromechanical integration technology
Electromechanical integration technology to replace the traditional mechanical transmission chain, machine widely adopted pneumatic technology. Such as pneumatic, pneumatic ink clutch, clutch pressure pneumatic interlocking institutions, etc. But not high enough, such as electronic control technology USES only a few machine adopts the CPC for the ink system technology. Individual machine adopts the ink fountain roller independent driving technology (driven by a separate motor). Without shaft feida control technology and high-speed online detection technology, equipment basic did not use at home.
彩翼无遮挡漫画Nine, further research and development of high-speed paper machine
彩翼无遮挡漫画Which restrict the development of the printing press in our country is a key reason why to paper machine technology and the same products abroad, there are gaps.
The 10300 r/hour for paper machine market has been fully occupied by domestic paper machine manufacturer. But more than 15000 r/hour for paper machine mainly also depends on the import. With the improvement of printing speed. 15000 r/hour has become the industry recognized a standard speed. So must go all out research and development of high-speed paper machine to adapt to the needs of the development of the market. High-speed for paper machine technology lag behind in the stability of the feida dynamic stability of the variable speed mechanism design, vacuum board design, etc. Now that several technology has different degree of a breakthrough. But compared with the similar products abroad and distance.
彩翼无遮挡漫画Need to further strengthen the study of high speed paper technology problems in addition to the paper. Currently showing another big problem is the paper. Before the degree of understanding of the problem is not enough, the machine speed is not high question boils down to give paper part of paper machine speed impact now also increasingly prominent. The slowest paper technical progress. Related paper technology research projects are rarely. Many organisations over the years there has been no fundamental change. Such as the structure of the paper chain row, the structure of the paper track chain drop ratio related parameters and powder spraying mechanism is almost not changed because of the versatility. A lot of single and double color machine used paper technology diverted to the polychromatic machine directly. To improve the work performance of paper part now. Must to them by item technical careful study. Find out the weak places to improve and improve.
彩翼无遮挡漫画Ten, multi-function technology research to schedule
Printing machines in addition to finish after printing function should be added to the print function. This technology in the last performance drew the exhibition stand out. In addition to the traditional polishing a number of functions. You also need to consider increasing the hot stamping die cutting, laminating, etc. This can greatly reduce the loss of printing quality. To improve efficiency. The purpose of reducing costs.
Safety standards should become an important standard of products and get real carry out along with the rapid growth of international trade. Safety standards become the equipment of our country has entered the international market one of the biggest "obstacle". For a long time we haven't enough understanding of safety standards as a result, some equipment is not allowed to work in the international exhibition. Safety standard is not only add a shield. It includes a lot of content. Some is directly related to machine design such as stipulated by the safe operating distance, etc. Hope the printing equipment manufacturers can contact printing machinery standardization committee as soon as possible. The implementation of the safety standards as soon as possible. So that our device can enter the international market as soon as possible.