KBA Sensoric Infeed System-KBA North America
KBA North America announces a revolutionary sideless paper feed system: Sensoric Infeed System
SIS. At present, this SIS sideless feed has become the core selling point of KBA Rapida 105 sheet-fed printing equipment with a speed of up to 18,000 sheets / hour. About one-third of KBA Rapida 105 sheetfed offset presses use this technology. This technology reduces the error rate in the paper feeding process, which makes the printing process smoother. It also effectively shortens the preparation time of the job conversion process and improves the profitability of the printing enterprise.
The working principle of SIS system:
1. (paper) front-end detection sensor (Edge-detecting sensor)
2. Swing infeed
3. Single-revolution transfer drum
4. Impression cylinder
A. Gripper bar lateral alignment phase
B. Exact sheet-edge alignment phase
Simplifying the paper feeding process and paper alignment process of sheet-fed offset printing presses is the direction that printing press manufacturers and the printing industry have been working hard. This is also a problem that is difficult to control for high-speed printing presses. And one of the main directions of everyone is how to make this process more stable and more reliable without human intervention. It is best to do this when the printing materials often change. With the SIS sideless system, KBA designers did this.
At present, most of the sheet-fed offset presses are basically equipped with traditional mechanical or pneumatic side gauges. During the paper feeding process, the paper must be decelerated first, then stabilized by the front gauge, and then adjusted by the side gauge. Before the printed sheet enters the oscillating hand, many printing materials will undergo a process of being "drawn". In KBA's SIS system, a sensor continuously scans the edge of the printed sheet. This eliminates the adverse effects caused by paper fibers on the scan results. The gripper row of the single-circle transfer roller will be adjusted in advance based on the information about the edge position of the transferred paper. Therefore, when it (paper gripper row) arrives to receive the paper, it has already been rough adjusted. After that, the gripper row will be finely adjusted horizontally, so that the paper is accurately positioned before being transferred to the first impression cylinder.
In the process from swinging the delivery tooth to the impression cylinder, the paper entering the printing machine can be adjusted precisely, which means that the adjustment time is almost twice that of the traditional system. When the printing speed reaches 18000 sheets / hour, it is necessary to accurately position 5 sheets of paper per second, which is necessary. This number also reveals how important it is to feed paper without side gauges for high-performance sheetfed offset printing.
One of the key points of KBA's innovative technology is that during the paper feeding process, when the paper reaches the previous position, it will not be affected by the lateral positioning process. Because of this, the paper has more time to stabilize and adjust. SIS reduces the occurrence of malfunctions. At the same time, whether it is thin paper (easy to warp) or very thick thick paper (it is easy to punch out the front gauge at high speed), it can be accurately positioned. And when changing the printing materials, there is no need to manually adjust the side gauge. At the same time, this also avoids the mechanical damage problems that some sensitive printing materials are prone to.
In 2005, 20 printing machines with SIS system were delivered to KBA's customers, and this demand is still growing. In 2007, 160 to 180 printing machines with SIS systems are expected to be delivered to customers. This intelligent paper feeding system is also installed on a dedicated printing machine with a glazing unit. At present, customers who have adopted this technology have generally affirmed this technology.
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