At present, many exciting new processes and emerging technologies are being incorporated into web offset printing technologies. These new technologies and new processes will soon produce a shock wave that will have a great impact on the existing technologies. The new technologies presented in this article are mainly focused on conventional thermoset web offset presses. Of course, there are also some markets that will affect the cold set press.
The efficiency and productivity of future thermosetting web presses will be significantly higher, reducing prepress job preparation time, providing more stable and consistent colors, greater accuracy in registering, and even greater environmental pollution. Small, but also with the global network, remote monitoring of the operation of the printing press. To this end, printer manufacturers use a variety of related technologies to achieve these goals, including AC AC servo motors, fiber optic cable technology, almost completely enclosed thermal radiation control systems, closed-loop color control, and a range of automation features. New technologies that will soon appear include: electrostatically assisted drying, single-fluid inks, and remote diagnostics.
In the direction of printing without shafts
With the continuous improvement of synchronous AC servo technology in some companies (such as Rexroth Indramat), printers without drive shafts will soon become the standard for press manufacturers. Actually, shaftless technology is not a new thing. It appeared in the printing industry as early as two decades ago when it was mainly used to drive folding machines independently on in-line folding machines, reducing time problems. Servo motor technology has recently been applied by some manufacturers. They install a separate AC servo motor on each drive unit of the printing machine. The installation site includes: printing connectors, roll holders, cooling rollers and folds. Page machine.
Each motor is connected to a central controller via fiber optics and can be independently controlled to ensure that all units remain synchronized in terms of speed, position and torque. The KBA Compacta 215, which was exhibited at the Drupa exhibition in 1995, was the first fully-integrated shaftless press.
Shaftless presses have many advantages over traditional linear bearing presses, such as higher quality prints that can be achieved by reducing mechanical errors.
Because all units of a linear bearing press are kept in sync with the gears, chains, clutches, belts, and end-coupled pulleys. A slight backlash (caused by slight motion on the gear) at any point is transmitted to the immediately adjacent unit. The resulting mechanical error leads to premature acceleration or deceleration. These slight errors accumulate. It can cause very important problems such as color registration and web tension control. Each independent motor on the shaftless press is electrically synchronous and can be synchronized with other motors within a differential (or 0.008 degrees). Any small error will not propagate in the process and cause serious machine failure.
In addition, the shaftless press can also perform greater tension control because the speed of each unit is controlled individually. The motor driving each unit can operate at a certain percentage of the speed of the press at or above the speed of the press, with the result that higher tension control can be achieved.
The efficiency and productivity of future thermosetting web presses will be significantly higher, reducing prepress job preparation time, providing more stable and consistent colors, greater accuracy in registering, and even greater environmental pollution. Small, but also with the global network, remote monitoring of the operation of the printing press. To this end, printer manufacturers use a variety of related technologies to achieve these goals, including AC AC servo motors, fiber optic cable technology, almost completely enclosed thermal radiation control systems, closed-loop color control, and a range of automation features. New technologies that will soon appear include: electrostatically assisted drying, single-fluid inks, and remote diagnostics.
In the direction of printing without shafts
With the continuous improvement of synchronous AC servo technology in some companies (such as Rexroth Indramat), printers without drive shafts will soon become the standard for press manufacturers. Actually, shaftless technology is not a new thing. It appeared in the printing industry as early as two decades ago when it was mainly used to drive folding machines independently on in-line folding machines, reducing time problems. Servo motor technology has recently been applied by some manufacturers. They install a separate AC servo motor on each drive unit of the printing machine. The installation site includes: printing connectors, roll holders, cooling rollers and folds. Page machine.
Each motor is connected to a central controller via fiber optics and can be independently controlled to ensure that all units remain synchronized in terms of speed, position and torque. The KBA Compacta 215, which was exhibited at the Drupa exhibition in 1995, was the first fully-integrated shaftless press.
Shaftless presses have many advantages over traditional linear bearing presses, such as higher quality prints that can be achieved by reducing mechanical errors.
Because all units of a linear bearing press are kept in sync with the gears, chains, clutches, belts, and end-coupled pulleys. A slight backlash (caused by slight motion on the gear) at any point is transmitted to the immediately adjacent unit. The resulting mechanical error leads to premature acceleration or deceleration. These slight errors accumulate. It can cause very important problems such as color registration and web tension control. Each independent motor on the shaftless press is electrically synchronous and can be synchronized with other motors within a differential (or 0.008 degrees). Any small error will not propagate in the process and cause serious machine failure.
In addition, the shaftless press can also perform greater tension control because the speed of each unit is controlled individually. The motor driving each unit can operate at a certain percentage of the speed of the press at or above the speed of the press, with the result that higher tension control can be achieved.
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