The performance of new offset press technology 2

The buckling tooth shaft adopts the paper transfer and impact-free system, that is, the cavities opening and closing mechanism of the impression roller and the transfer roller is driven by a conjugated cam method. When the paper is handed over, the teeth are opened and closed synchronously to ensure the smooth conveyance of the paper and prevent the fantail from being conveyed. This improves the accuracy of registering and ensures stable feeding during high-speed operation. Optimizing the chain guide layout is also a measure to ensure that the chain is at high speed, reducing noise and vibration.
Seamless and narrow seam roller technology can reduce and eliminate the impact vibration in the drum operation, can improve the quality of printed products and extend the life of the machine. This technology has been applied in web offset presses made by many manufacturers.
3. Pneumatic technology Pneumatic technology is fast, safe, reliable, and low-cost. It is widely used and widely recognized in the industry. The use of a large number of pneumatic control systems has greatly reduced the complexity of the mechanical structure and reduced the difficulty in the manufacture, installation and commissioning of machinery. Such as vacuum conveying paperboard, vacuum suction belt and variable speed paper feeding form, make the operation and adjustment quick and easy, and realize stable paper feeding and accurate transfer.
Pneumatic clutch pressure mechanism is stable, accurate, reliable, easy to adjust, and flexible in organization. Pneumatic side pull gauge has strong adaptability to various printing materials, and has good positioning and stability for thin paper and thick paper, enabling accurate positioning. The front damper pneumatic device blows the air toward the leading edge of the paper, so that the paper maintains a stable and correct posture and enters the front gear, greatly improving the accuracy of the printing register. Pneumatic ink roller lifting mechanism makes each roller's landing stable and reliable. The air-cushion transfer paper and air-blast guide paperboard ensure that all kinds of printed sheets can be smoothly and accurately collected, and scratches and scratches can be reduced during the transfer. The air-blown paper guide and double-injection powder device make the paper basket smooth and neat, which can save 30% of the amount of powder.
Third, automatic control value-added high-efficiency <br> Automatic control technology, including automatic register, automatic detection and diagnosis, pre-selection and actual value display, quality control, remote diagnosis and maintenance, ink remote control, make full use of preset data information, The preparation time is greatly shortened, so that better printing quality, shorter printing preparation time, and less maintenance of the printing press can be achieved, realizing digitization, networking and automation of printing.
1. The ink roller is controlled to control the axial movement of the ink roller to make the ink thin and even. The phenomenon of the difference in the ink color between the sky and the foot of the repetitive image in the packaging label printing can be adjusted by changing the commutation time of the string, or it can be set to zero.
When the printing is paused, the tandem roller should be stopped in series to maintain the distribution of the ink volume created during printing, so as to avoid paper waste caused by restarting, and at the same time to prevent the ink roller from drying, shining and wearing, and to increase the service life of the ink system. .
2. Automatic plate changing device The automatic plate changing device utilizes a plate box capable of loading a certain number of printing plates, and is automatically plated and unloaded through an automatic control system. There is no need for manual intervention, which greatly reduces auxiliary time and improves work efficiency.
The non-stop version change can replace the printing plate of the printing unit which is not printed in the case of normal operation of other printing units, and at the same time change the printing system and perform various presets, which greatly reduces the auxiliary time. For example, Roland 700's plate cylinder is driven by a shaftless motor, which can realize non-stop version change, increase the speed of plate change, and also can flexibly adjust the gap between plate cylinder and blanket cylinder.
3. Automatic cleaning device The automatic cleaning device reduces the auxiliary working time and improves the production efficiency. At the same time, the blanket can be cleaned in time, the surface of the blanket can be kept clean, the service life of the blanket can be extended, and the recycling of the cleaning agent can be used to save the production cost. Automatic cleaning of the blanket cylinder or impression cylinder takes only one minute at a time, and the required time is 1/6 of the manual scrubbing.
The automatic cleaning device sprays the washing liquid and water directly into the washing roller cleaning roller and the ink roller through an independent nozzle bar, and the two nozzle bars are supplied by the central water supply box and the washing liquid. The brush roller rotates in the opposite direction to the roller. Each rotation rotates the string horizontally to ensure that the blanket is thoroughly cleaned.
The self-cleaning circulation device after washing cleans the remaining ink and washing liquid on the brush roller and nozzle bar. The device and the waste tray are separated from the machine and can be easily disassembled. The automatic cleaning device thoroughly cleans the work surface, reduces downtime, and protects the environment. The cycle cleaning system can wash the ink roller at the same time. (To be continued)