Reduce energy input for high-yield printing presses
Sheet-fed offset printing is a high energy consumption process. Therefore, it becomes very important to develop energy-efficient components and make full use of waste heat wherever possible. For a long time, KBA has always adhered to this idea for the benefit of customers and the protection of the environment and has put forward some very practical ideas.
When using a sheet-fed offset press, the energy consumption depends largely on the type of printing job. In addition to those general efforts to optimize energy efficiency that are beneficial to any printer, there are other optional devices for reducing basic energy input, but only when performing special printing purposes, the financial expenditure of purchasing these optional devices Is worth it. Since there are so many production parameters involved, to determine the potential benefits of recycling the waste heat from the printing press in the most effective way, a series of precise measurements are required over a long period of time.
KBA has developed a number of standard and optional components to improve the energy efficiency of the Rapida press from the fly to the take-up device on the solid foundation of data collection. Given below are examples of the most effective components.
Four-quadrant driving device for improving efficiency
Rapida is equipped with a four-quadrant drive device, which improves the efficiency of the entire printing press by feeding back braking energy to the power grid. This method is particularly effective for reducing power consumption during preparation. KBA prefers to drive the first impression cylinder directly through a belt.
DriveTronic without shaft drive
KBA's DriveTronic has no mechanical gears, longitudinal drive shafts or other consumables that consume a lot of energy. Instead, direct drive components are much more efficient. The proportional valve connected to the self-adjusting air compression cabinet ensures that only the amount of air blowing and suction required by the separation head is provided. This means that the energy input for gas supply is reduced. A single, dispersed blower of the suction paper conveyor belt ensures energy-efficient paper transport.
The streamlined spoiler at the gripper holder improves the energy efficiency of the airflow in the take-up device
DriveTronic SIS sideless feeder
Now, the KBA DriveTronic SIS feeder without side gauges, which is available as an optional device in various format levels, is different from mechanical or pneumatic systems in that it does not require suction, thus reducing the energy of the air supply system. Consume.
Energy-saving roller bearing technology
The roller bearing with reduced clearance and smooth operation can rotate the impression cylinder and paper transfer cylinder with a small force. KBA presses have used this support technology for a long time, which is a major factor in reducing Rapida ’s energy consumption. The Venturi effect will be used to reduce the amount of air blown by the paper guide. The baffle at the paper transfer roller will prevent submerged flow.
For a long time, clearanceless friction bearings have helped reduce the energy consumption of Rapida presses
The number of rollers in the printing unit is reduced
The number of rollers in the inking unit has been reduced to speed up the reaction. At the same time, the single ink path ink transfer system was optimized to reduce friction and energy loss. The three-roll dampening device has also been optimized. The function of the printing unit that can be stopped during printing production can stop the operation of the inking device, which further provides energy saving options. This capability itself can save a total of about 3 kilowatts of energy per inking unit. It will also benefit the environment and budget because it eliminates the need for expensive ink stick anti-wear oil, and saves time in applying anti-wear oil and cleaning.
AirTronic take-up device requires less air
KBA's AirTronic take-up device reduces the number of blowpipes and therefore reduces air consumption. The energy-saving Venturi nozzle helps stabilize the paper running on the air cushion. The streamlined spoiler at the gripper holder adopts the method of optimizing the airflow to maximize the energy efficiency. The reduction of air resistance and the improvement of the paper guide will automatically reduce the air consumption.
Energy-saving VariDry drying device
The new generation KBA drying system has also greatly improved the efficiency of the glazing system. For example, the VariDryBlue infrared? Hot air dryer with heat recovery function will reduce energy input by as much as 50% compared to conventional systems. In the manufacture of the new VariDry UV drying device, the drying device will also be more energy-efficient by optimizing the reflector geometry and heat management of the radiation device to significantly increase the radiation efficiency level. The use of electronic ballasts reduces energy consumption in the standby mode, thereby achieving a further step of savings.
Optimized reflector geometry and better heat management of the radiant device improves energy efficiency during drying
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