[ppzhan Abstract] With the continuous deepening of China's reform and opening up, the printing industry has developed rapidly with a high growth rate. Large and medium-sized printing enterprises have introduced imported equipment with high technology content, high production efficiency and high product quality. At the same time, domestically produced equipment has been continuously followed up, and the introduction of foreign advanced technology has effectively enriched the production capacity of the printing industry. After more than 20 years of development, the sheetfed offset press in China's printing industry has formed a huge printing capacity, which can meet the needs of the domestic market and achieve the goal of “multi-colorizationâ€.
First, the development level of sheetfed offset printing equipment In principle, sheetfed offset printing and web offset printing are exactly the same. One of the differences is that products, web offset printing is mainly used to print newspapers and books, and sheetfed offset printing is mainly used to print beautifully colored prints such as book covers, albums, boxes, etc., which is what we often say. Printing, which determines that it is more complex, finer and more rigorous than rotary offset printing in the entire printing process. In the development of sheetfed offset presses, several important technological improvements have attracted attention and made significant contributions to the improvement of their automation capabilities.
(1) Double-sided printing With the gradual resolution of problems related to double-sided printing technology (such as printing quality, smudging, etc.), double-sided multi-color printing equipment has become the main equipment of some printing equipment manufacturers. In particular, its rate has been welcomed by the majority of users. At present, double-sided printing is mainly focused on the two technologies of flipping and not flipping. For the domestic market, offset printing equipment that does not need to be turned over will be more and more popular among users. At present, almost all international manufacturers have launched their own unique double-sided printing equipment. Such as the Heidelberg Speedmaster SM52 ten-color flip printing press and its new Speedmaster XL105 double-sided printing machine with paper turning device on the drupa2008, Komori Lithrone S40SP, Akiyama new product MEGAJp5p540DC+RF large open 5+5 color leaflet Paper double-sided multi-color offset printing machine, etc.
(2) Large format printing on the format design, now there are a wide range of offset printing presses, and the printing products are also more extensive, and the large format equipment is unique, which can realize paper, plastic and micro corrugated cardboard. The ultra-large format direct printing, and even the printing of large transparent light box advertising materials. In recent years, the large-format offset press market has attracted considerable attention. The large-format printing equipment such as Manroland Roland900XXL and KBA Rapida 205 have injected strong vitality into the printing market. In 2008, Heidelberg was not far behind, and launched the Speedmaster XL142 and 162 large format offset presses at drupa2008. For domestic manufacturers, Beiren also launched the BEIREN800 large-format offset press, while Henan Xinji is determined to become a large-format offset press manufacturer (it can tailor large-format offset press products for customers, and has several successful cases, which are welcomed by the market. In addition, Jiangsu Changsheng and Jiangxi Zhongjing also have large-format offset printing machine representative products, which shows that this market is the focus of major manufacturers.
(3) No side gauge Before the paper arrives at the front gauge, the paper position is monitored by the photoelectric sensing device installed on both sides of the paper feeding table, and the information is fed back to the central controller, and then transmitted to the control roller servo motor of the transfer roller. , complete the lateral positioning of the position of the tooth row. Since there is no side gauge, the operator does not need to make any side gauge adjustments, which can effectively reduce the preparation time of 25%. KBA's DriveTronicSIS, a non-regular feed device, eliminates all manual intervention during the change of the substrate and ensures that the paper runs more smoothly than a mechanical or pneumatic system.
First, the development level of sheetfed offset printing equipment In principle, sheetfed offset printing and web offset printing are exactly the same. One of the differences is that products, web offset printing is mainly used to print newspapers and books, and sheetfed offset printing is mainly used to print beautifully colored prints such as book covers, albums, boxes, etc., which is what we often say. Printing, which determines that it is more complex, finer and more rigorous than rotary offset printing in the entire printing process. In the development of sheetfed offset presses, several important technological improvements have attracted attention and made significant contributions to the improvement of their automation capabilities.
(1) Double-sided printing With the gradual resolution of problems related to double-sided printing technology (such as printing quality, smudging, etc.), double-sided multi-color printing equipment has become the main equipment of some printing equipment manufacturers. In particular, its rate has been welcomed by the majority of users. At present, double-sided printing is mainly focused on the two technologies of flipping and not flipping. For the domestic market, offset printing equipment that does not need to be turned over will be more and more popular among users. At present, almost all international manufacturers have launched their own unique double-sided printing equipment. Such as the Heidelberg Speedmaster SM52 ten-color flip printing press and its new Speedmaster XL105 double-sided printing machine with paper turning device on the drupa2008, Komori Lithrone S40SP, Akiyama new product MEGAJp5p540DC+RF large open 5+5 color leaflet Paper double-sided multi-color offset printing machine, etc.
(2) Large format printing on the format design, now there are a wide range of offset printing presses, and the printing products are also more extensive, and the large format equipment is unique, which can realize paper, plastic and micro corrugated cardboard. The ultra-large format direct printing, and even the printing of large transparent light box advertising materials. In recent years, the large-format offset press market has attracted considerable attention. The large-format printing equipment such as Manroland Roland900XXL and KBA Rapida 205 have injected strong vitality into the printing market. In 2008, Heidelberg was not far behind, and launched the Speedmaster XL142 and 162 large format offset presses at drupa2008. For domestic manufacturers, Beiren also launched the BEIREN800 large-format offset press, while Henan Xinji is determined to become a large-format offset press manufacturer (it can tailor large-format offset press products for customers, and has several successful cases, which are welcomed by the market. In addition, Jiangsu Changsheng and Jiangxi Zhongjing also have large-format offset printing machine representative products, which shows that this market is the focus of major manufacturers.
(3) No side gauge Before the paper arrives at the front gauge, the paper position is monitored by the photoelectric sensing device installed on both sides of the paper feeding table, and the information is fed back to the central controller, and then transmitted to the control roller servo motor of the transfer roller. , complete the lateral positioning of the position of the tooth row. Since there is no side gauge, the operator does not need to make any side gauge adjustments, which can effectively reduce the preparation time of 25%. KBA's DriveTronicSIS, a non-regular feed device, eliminates all manual intervention during the change of the substrate and ensures that the paper runs more smoothly than a mechanical or pneumatic system.
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