Faster production speed and higher productivity

In order to streamline the supply of printing materials, more and more folding cartons and packaging printers are now equipped with logical paper feeding systems. There are many types of logical paper feeding systems available, and users can personalize them according to their own needs to achieve maximum work efficiency. Therefore, automation of the paper stack logical paper supply system can make the operation easier.

At present, there are many reasons for supporting the automation of paper pile logical paper feeding systems from time to time. Among these reasons, the primary point is that the paper stack logical paper supply system provides printing companies with the function of auxiliary materials processing, so that the level of productivity has nothing to do with the number of production of printing presses. Therefore, using it allows operators to focus their efforts on the monitoring of print jobs and quality. For example, in the production process of micro-corrugated cardboard, the paper stack at the paper feed and delivery table is replaced every 6 minutes. Under this kind of labor intensity, if the production continues for a period of time, in order to meet the requirements of the replacement speed of the paper pile, the printing press staff must be required to have a superhuman constitution or have a large group of assistants.

However, if a logical paper feeder is used, even in the case of printing light cardboard and short-lived paper, the labor intensity of the frequent replacement of the paper stack can be afforded. The automation of the paper stack logical paper feeding system can make KBA Rapids available. The net output of presses increased by 15%. Another reason to support the automation of the logical paper supply system is that because the automated system inserts the paper stack at the feed is much more accurate than manual operation, the use of the system enables smoother sheet-fed delivery with less congestion. . In addition, the output does not fluctuate because the press can be produced without stopping the machine. At the same time, because there is no manual replacement of the piles and the resulting shutdowns are avoided, the start-up waste is greatly avoided and mechanical wear is reduced. This advantage of the system is quickly reflected in the grass-roots production line, especially when printing more expensive printing materials. Automation can also reduce the amount of labor for printing workers, allowing the factory to reduce the number of operators and assistants or to install a printing press under the same number of labor conditions.

The advantages of automated paper feeding system

In order to automate stack transport, certain devices must be installed on the press. On KBA Rapida presses, these devices include: a paper stack replacement device installed at the paper feed table, and non-stop rollers installed at the delivery table (some delivery tables have a height-adjustment function, and some have none).

The automated stack changer at the feeder does not limit the normal operating space, which means that the stack can enter the transfer station from the side or front. Irrespective of whether the rake in the machine is operating, the light control barrier is always on. In contrast, automated non-stop systems provided by other manufacturers can only be installed at the front of the transfer table or on the top, so the stack can only be inserted and removed from the side. In addition, the non-stop on the KBA's transfer station is much cheaper than other merchants. The adjustable-heavy non-stop roll mounted at the delivery table and the paper stack replacement device in the transfer table are user-friendly and do not obstruct the entry of the stack. In addition, the series of processes for paper stack replacement in the KBA Logical Paper Supply System is also quite compact and fully automated. However, if logic supply systems provided by other manufacturers are used, either the non-stop operation must be manually installed or the stack replacement process is automated, but two backplanes must be inserted from each side, thus occupying a lot of space. And it prevented the paper pile from entering.

What kind of tray can be used in the paper stack logical paper supply system is another issue that needs careful consideration. KBA's Paper Stack Logical Paper Supply System handles various trays currently available for use in logical paper supply systems. The system can even handle a variety of brackets, wider tolerance brackets, and less rigid brackets. In this way, the factory can choose according to the price when choosing the bracket. This flexibility of the KBA Logical Paper Supply System is also suitable for the web of the carrier. For example, for a medium-format printer, it is permissible to use a pallet with a smaller format than the standard 800 mm x 1200 mm.

A variety of sheetfed offset machines equipped with an automated logical paper supply system have the same tolerances when positioning the stack. However, there are some key differences from other logical paper supply systems: The KBA system allows a much larger tolerance range for the flatness of the paper stack surface. Normally, the tolerance range allowed by the logical paper supply system is ±10mm, while the stack tolerance of KBA Rapida's paper stack logical system and automatic non-stop equipment is greater than 20mm.

"Different horses are suitable for different runways"

KBA has always been committed to providing more logical paper supply systems for the market. Taking the Rapida press as an example, the user can select the direction in which the stack is to be inserted and removed, either the front or the side, according to the available workspace. KBA's logical paper supply system contains a total of 14 independent modules. By relying on these modules, the company can arrange the composition of the system according to the needs of users. These modules include: long-line roller and cross-roller transfer mechanisms (some forklift space reserved for the tines, and some are not), steering station, bracket conveyor belt (some with lifting devices, some not), brackets Dispenser and Bay Collector.

For example, it is necessary to use a cradle dispenser to connect the logical paper feeding parts of the paper feed table and the delivery table. However, due to technical reasons, the paper pile at the delivery table is usually smaller than the paper stack at the delivery table. When the system transports empty trays from the transport station to the delivery table, additional trays are automatically added as needed. In addition, a paper stack diverter can also be integrated on the transfer table, and the delivery table can also be connected to the die-cutting line. These configurations are now commonly used.

Another feature of the KBA Logical Paper Supply System is the turntable. When the system is transporting large trays in a straight line direction, these trays occupy relatively more space than other logical paper supply units and are less reliable. Therefore, Kobayashi recommends that if possible users use modules that are widely used and have good reliability.

These independent logical paper supply parts can be placed directly on the ground or installed in the ground, or they can be combined. This type of installation allows the components of the paper stack logical feed system to be crossed. You can send printing consumables to multiple presses connected to the same logical paper supply system.

Brainstorming to provide better products

KBA cooperates with some outstanding suppliers of paper stack logical paper supply systems and, if necessary, oversees the overall design and installation of the logical paper supply system. These logical paper feed systems are equipped with a dedicated control unit that is synchronized with the press control unit. The advantage of this design is that it can be embedded in the remote maintenance facility on Rapida presses, and users can get a full turnkey package. At the same time, KBA is also willing to install a logical paper supply system provided by a third party. In this case, KBA will make special adjustments to Rapida presses to integrate the system. Also, it will work closely with third-party companies on technical details and interface issues. Although experience shows that this is not necessarily the most effective solution, it may be more satisfactory if other businesses are based on proximity to customers or install existing logical paper supply systems on Rapida presses. s Choice.

When installing a logical paper supply system, methods that are not directly connected to the printer can also be used. Under this scheme, the paper stack is transported to the printing machine by an automated method, and then the paper stack is manually inserted and removed. Similarly, in this system scheme, the paper feed table or the delivery table must also be protected by the light control barrier to prevent accidental intrusion of people and materials and accidental insertion and removal of the paper stack.

Wide applicability

All the above mentioned system modules can provide users with personalized services, even in those user factories with very limited space. In addition, KBA's Logical Paper Supply System can also be connected with its competitors' logical paper supply systems and printers.

KBA has successfully installed 50 logical paper supply systems for medium-format and large format presses. Today, KBA has become one of the most experienced suppliers of paper stack logical paper systems in the global market, providing users with operational skills and flexibility benefits.

In recent years, most of the paper stack logical paper supply systems are used in large-scale, difficult-to-process large-format sheets (such as 1200mm x 1620mm). Now, the logical paper supply system is becoming more and more popular in 3B printing companies. In these enterprises, the main printed jobs are short-lived and medium-print jobs. There are also some users who use this system to prepare paper stacks for a variety of jobs at once, and place the paper stack neatly in front of the transfer table. In this way, the operator can concentrate on setting up the printing machine when replacing the job, without worrying about the supply problem of the cardboard.

Now, KBA's paper stack logical paper supply system operates in printing companies all over the world. For example, in MMP, Traben-Trarbach, Germany, KBA Logical Paper Supply System is working 24 hours a day, 7 days a week. With the KBA large-format printer, MMP printed 220 million sheets in less than four years.


Source: "Global Box Industry"