Xincheng successfully developed 2100 flexo press

At present, China's packaging and printing companies are increasingly demanding wide-format flexo presses. Some domestic manufacturers specializing in the production of flexo presses have turned their attention and energy into R&D and production of wide-format flexo presses. Henan Xinji Group Xincheng Printing & Packaging Machinery Co., Ltd. took the lead in the development of a successful 2100 wide-format flexographic printing press. Recently, it held a live demonstration and technical exchange meeting and passed relevant expert technical appraisal.

The 2100 wide flexo printing machine is mainly used for the printing of roll paper and plastic film. Due to the use of flexible resin plates, it has certain tolerance for the surface smoothness and thickness uniformity of paper and plastic films. When using high-grade paper, the printing effect is similar to that of gravure printing presses and offset printing presses. Compared to gravure printing presses and offset printing presses, the printing effect is closer to that of gravure printing presses when using medium and low-grade papers, and the printing efficiency is close to that of gravure printing machines when they are used. Many prints are better than gravure and offset presses. The complete machine has the comprehensive advantages of reasonable structure, high degree of automation, wide range of performance index parameters, convenient operation and maintenance, strong practicability and high cost performance ratio.

Since the 2100 wide flexographic printing press is mainly designed for the production conditions of related domestic companies, it has obvious technical features compared with the same type of foreign equipment. Mainly reflected in the following aspects: automatic tension control to make the printing part of the paper tension stability, to ensure the printing quality; unwinding the use of Mitsubishi automatic tension control system, tension control is stable and reliable; winding using independent vector inverter motor drive, and the main motor synchronization PLC closed-loop control; tension detection with low-friction cylinder, floating swing roller, rotary encoder, while compensating for changes in the paper path, maintaining tension stability; automatic clutch pressure (oil pressure) system, in the clutch pressure, pressure release The roller and the embossing roller are not separated from the pressure by the pressure, so that the printing pressure remains unchanged and the printing (overprinting) position does not change when the pressure is applied. When the pressure is applied, the plate roller and the anilox roller are separated and the pressure is separated from the teeth to ensure the anilox roller. The independent rotation, so that the ink does not block the texture, while ensuring the same pressure when the ink transfer pressure is unchanged; printing wall plate, traction wall plate is high quality cast iron, thickness 90mm, the host base is high-quality cast iron, thickness is 160mm, to ensure the whole machine High-speed operation stability, shock absorption, pair machining center processing hole position and other installation position, ensure the position accuracy of the rack wallboard; The computer overprint system guarantees the overprinting requirements in the printing process when various random changes occur; the motor drive system of the printing plate roller and the anilox roller slide ensures short adjustment time of the multi-color machine set and improves work efficiency; Cutting and automatic counting ensure accurate print quantity and save roll change materials; heat exchange centralized heat supply and sub unit fan supply air and temperature setting can better adapt to different requirements of air volume, air pressure, temperature adjustment; sealed in and out Oven structure and thermal secondary cycle ensure thermal efficiency and workshop environment; the whole machine multi-motor PLC synchronous control system facilitates the addition of other functions of equipment, online and resource sharing. During the live demonstration, the equipment started up and operated very smoothly, the speed could be opened to more than 100 m/min, and the machine noise was small.

The printing effect is ideal, the overprinting is accurate and the color is vivid. Although rare, it is ink flexographic printing, but the picture has layers, a strong sense of three-dimensional, and a sense of ink. It has been fully affirmed by experts and business representatives. The manager of a large carton box company said that there is an urgent need for wide-format flexo printing machines in our paper packaging industry. Flexo preprinting has obvious advantages over gravure preprinting, which is conducive to environmental protection and pollution-free. We have taken a turn around the country and have inspected some manufacturers of flexo presses, but the wide-range machines we see are basically the enlargement of narrow-width machines, and there is no real mature wide-format machine technology. With the trend of preprinting from the gravure printing to flexo printing in the carton industry, the wide range machine of Xincheng Company seizes the opportunity and is very promising. An old Shanghai expert said that the machine is successful and can fully meet the requirements of users. The machine has been ordered by a Taiwanese company in Shanghai and will be shipped soon. With the needs of users, the hot-selling of wide-format flexo printers is imperative in the market.

According to reports, the developer of the 2100 wide-format flexographic printing press is Ren Jiping, general manager of Xincheng. Ren Jiping is not only the manager of Xincheng, he is the main R&D staff of the equipment. He is an expert in offset printing, gravure printing and flexo printing. He has many years of experience in R&D, production and testing of various types of printing presses. In recent years, he has focused his attention on the technology of flexographic printing presses, as well as research and analysis of domestic and foreign units, satellites, stacked narrow and wide web flexographic presses. Through repeated inspections and careful analysis of first-rate foreign flexographic presses and extensive exchanges with industry experts, he has gained in-depth understanding and grasp of the wide-format flexographic printing press technology. Since the design of the wide-width machine and the narrow-width machine are quite different, in the process of designing a wide-format flexo printing machine, he and the company's technical staff integrated the various directors and put the overall structure of the world's advanced gravure printing machine into a framework. The local structure, full tension automatic control, and computer overprint control were integrated into the design to form a unique design concept. In a six-month period, the design and production were completed and the unit-type wide 8-color flexo printing machine was successfully built. At the same time, in order to achieve a perfect operating effect, Ren Jiping requires employees to work hard on the processing of equipment, require the use of the best tension and overprint control system, and require strict design of gears and gears; in order to find the ideal roller, The professional manufacturer in East China ensures the accuracy and strictly controls the vibration within 2 filaments; the thickening of the wall panel to 90mm ensures that the machine runs smoothly.

Reprinted from: China Packaging News