The multifunctional rotary printing press refers to a rotary printing press that combines various printing methods and various post-press processing functions. With the development of market demand and technology, the functions of rotary machines have been expanded. Single-function rotary machines can no longer meet the increasingly complex market demands, and multi-function rotary printing machines have emerged. Various printing methods include: offset printing, flexo printing, gravure printing, line gravure printing, silk screen printing, digital printing, etc. Post-press processing functions include bronzing, laminating, die cutting, embossing, folding, cutting, and drying. The multi-function rotary printing machine can simultaneously integrate the above-mentioned functions into one printing production line, forming a multi-function production capacity, so that the product can be completed at one time, which can improve production efficiency, also help reduce waste, and at the same time achieve the best printing effect. In the past, people could use a sheet-fed printing press to complete the multi-function printing process. However, this process also has its fatal weakness. For example, if the paper is printed many times, it will be deformed, resulting in inaccurate overprinting and an increased scrap rate. In addition, if a single-sheet printing machine is used, after multiple printing and post-press processing, the enterprise needs huge space for stacking semi-products, and the production efficiency is undoubtedly very low. The application of the rotary machine effectively avoids these weaknesses. The emergence of multi-function rotary presses is a product of the ever-changing printing market and the ever-increasing demands on printed products. The characteristic of this printing machine is that it can fully reflect the current market requirements for multi-function and high efficiency. At the same time, the emergence of multi-function printing machines is also a product of the development of various advanced technologies to today. Without the emergence of new technologies, it is difficult for multi-function printers to enter the market. Print Features Another outstanding feature of the multi-function rotary printing press is its ability to print a variety of substrates. It has a wide range of substrates, which can be plain paper, cardboard, plastic film (PVC, OPP, etc.), aluminized film, stickers and composite materials. The thickness of the substrate can be between 20-350 microns. Its specific products are: commercial rotary printing, plastic flexible packaging, aluminum film packaging, paper packaging, cardboard packaging, self-adhesive labels, laminating labels, seamless cylindrical labels, and high value-added security printing, lottery printing, commercial Bill printing, art printing, etc. Different printing methods have their advantages and disadvantages. The multi-function printing machine can effectively utilize the advantages of various printing methods according to the characteristics of the printed products, and complement each other to achieve the best printing effect. For example, offset printing is characterized by its advantages in printing accurate halftones, uniform gradation, and high definition. Flexo printing is good at on-site printing, metal ink printing, local glazing and other processes. Gravure printing is good at printing metal ink, security printing, and solid printing, and has a thick ink layer thickness. Line gravure is unique in line printing and security printing. Silk screen has special strength in ink layer thickness, metallic ink and special printing effect. Digital printing is its expertise in printing changing content. Combined with post-printing processes such as bronzing and lamination, not only can the printed products reach the most satisfactory printing effect, but also greatly improve the production efficiency. Technical characteristics The design of the multi-function printing machine has the following characteristics: Modular design Modular design is to make any printing unit or post-press processing unit into a single module, which can be installed in the necessary location as required, which makes it possible to add any printing unit and post-press processing unit. This increase can also be placed as desired by the customer. Vision printers like Drent Goebel can install up to 40 sets of printing and post-processing modules to complete post-press processing functions such as offset printing, flexo printing, silk printing and hot stamping. At the same time, the replacement of these plug-ins does not require any tools and can be completed quickly. [next] Shaftless technology In the past, multi-unit printers used a main drive shaft. When there are not many printing units, there will be no problems. However, when the number of printing units increases and the distance of the drive shaft increases, unstable torque and gear lag will occur, and it is difficult to maintain the synchronous operation of each unit. If the longer the transmission shaft, the more gears, the greater the error will be, the result is that the printing registration is difficult to guarantee, and the printing quality cannot be controlled. Using shaftless technology, a motor is installed on each printing unit, controlled by a computer, so that each printing unit operates very accurately and synchronously. The connection between each unit is not a mechanical connection, but is driven by a central control computer. The precise control method of shaftless technology can also greatly reduce the preparation time before printing and reduce consumption. The use of shaftless technology can easily add a large number of printing units and post-press processing units, while also ensuring the accuracy of printed products. Due to the use of shaftless technology, the transmission mechanism of the printing press cylinder is no longer limited by gears, which makes it possible for the printing press to install and replace cylinders of different sizes. At the same time, due to the simplification of the mechanical structure, the company's spare parts reserve can also be reduced, and the benefits have been improved. Because the shaftless technology is more accurate than the shafted design, the preparation time before printing is greatly shortened, which improves efficiency and reduces waste. The advantages of the rotary machine are more obvious. This type of rotary machine can even undertake printing operations with printing as short as 3,000 copies. Plug-in technology In the past, a weakness of the rotary press was limited by the size of the printing format. Newspaper printers will not have this problem, because the size of the newspaper will not change, so it will not be troubled by the size. However, when you need to print different sizes of prints, because the diameter of the cylinder of the printing press cannot be changed, the rotary printing press is bound to have paper waste. In order to solve this problem, the simplest way is to change the size of the drum, which is the problem to be solved by the plug-in technology. The plug-in technology is to make different diameter rollers into different plug-ins, and the roller plugs of different diameters can be replaced as needed, which solves the problem that the rotary machine can print different sizes of prints The printing machine of Drent Goebel Company adopts a 3-cylinder set plug-in design. In each set plug-in, the size of the plate cylinder, blanket cylinder and impression cylinder are the same. This design ensures the web printing quality. Users can choose different sizes of rollers. The size of different rollers can be increased or decreased by 4.23mm (1/6 inch) or 6.35mm (1/4 inch) in length. Due to the change in cylinder diameter, the maximum length of the printed matter can be selected from 431.8mm to 711.2mm. When replacing the plug-in, in addition to pressing the button, no tools or other human intervention is required. The inserted roller set can be automatically locked and rotated to the starting position. The 4 roller inserts can be replaced within 10 minutes. In addition, the printing plate can also be installed before the roller insert is replaced. As soon as the roller insert is replaced, printing can start immediately, greatly saving preparation time before printing. Sleeve technology Sleeve technology was used in the past by flexo printing technology, and it is also applied to offset printing presses. This technology is also to satisfy the requirement that the rotary printing press can print different sizes of printed matter. The function of the sleeve technology is the same as the function of the plug-in technology, but compared with the plug-in technology, the cost of the sleeve technology is lower. Because you do not need to replace the plate cylinder, blanket cylinder and impression cylinder at the same time, the adjustment time required to replace different prints is shorter, and only the sleeve needs to be replaced. And when changing the size of the sleeve, only the plate cylinder and blanket cylinder need to be replaced. The sleeve diameter of Drent Goebel Company can be changed continuously from 381 mm to 762 mm. Different from plug-in technology, the plate cylinder, blanket cylinder and impression cylinder using sleeve technology are equipped with separate motors, which also makes the registration work more accurate. In the plug-in technology, only one motor drives the plug-in. Drying technology Various drying techniques can be used on the multifunctional rotary press. Such as UV drying, hot air drying, infrared drying, electron beam drying and high frequency drying. According to different needs, the dryer can be equipped with a cooling roller or a separate reel cooling device. UV drying is the most suitable drying method that is often used, and it is most suitable for materials with high printing requirements and temperature sensitivity. For temperature sensitivity, ink flying ink, UV lamp position, etc., can be controlled in a variety of ways. The advantages of using UV drying are: can reduce energy consumption, can reduce the use of ink, reduce the temperature and pressure on the printing material, it is an environmentally friendly printing method, the preparation time before printing is short, the ink can be dried quickly, Because 100% solid material is used, there is no solvent, and there is no pollution caused by solvent-free evaporation. The performance of the ink in the ink fountain is very stable. It is suitable for most printing materials. It has a good glazing effect and is resistant to solvents and heat. Wear-resistant, the ink color is durable. 7Ml Nail Polish Bottles,Bulk Nail Polish Bottles,Custom Nail Polish Bottles,Square Nail Polish Bottles Zhejiang Changxing Hanghua Glass Co., Ltd. , https://www.hanghua-glass.com