Technical application of cross cutting machine in corrugated board production line
2024-05-01 04:07:39
The application of cross cutting machine in the production of corrugated board has gone through the manual, single-sided paper cutting machine, mechanical control cross cutting machine, computer-controlled straight knife cutting machine, and computer controlled spiral knife cutting machine. Among them, computer control is divided into DC computer control, DC servo control, AC servo control, and calibration cutoff control. Corrugated board production line equipped with cross cutting machine has a single-pole, double-double-knife, single-double-knife form. What kind of production line configuration cross-cutting machine, depends on the production line speed requirements, mainly in the following situations:
　　 1. The line maximum speed of 100 meters per minute or less of the production line (three or more), arranged in the form of cross-machine control unit and the computer-controlled general form is sufficient, if there is pre-printed lines are different requirements. Because the mechanically controlled cross cutting machine does not contain a computer control section, its order management method for cutting the paper board is realized through stepless speed change. The maximum starting speed is only less than 100 meters per minute . When changing each order size, it must be stopped for adjustment. After several trial cuts to further adjust the cutting accuracy, this process will often result in the waste of some cardboard. The degree of waste depends on the proficiency of the operator. The machine-controlled crosscutting machine has a low cost and can be computerized in the future. It is suitable for small-invested enterprises to adopt at the start. Of course, the appearance of the retrofitted device cannot be compared with a real computer-controlled crosscutting machine, and the performance can be basically achieved. Due to the current general improvement of the production line speed and the reduction of the popularization cost of computer technology, machine-controlled cross cutting machines are currently being eliminated in many large-scale enterprises, and computer-controlled straight knife cutting machines are generally used.
　　 2 . At present, the computer-controlled straight knife cutting machine in the market can produce a maximum speed of up to 150 meters per minute . Because its mechanical structure determines the shear impact force, the design of the knife shaft is rough and the moment of inertia is large. In order to achieve computer control, it leads to greater motivation and control, which is like controlling the difference between a large truck and a car. The structure of the cross-cutting machine can be configured with any type of computer control, but the speed can not be greatly improved. The computer-controlled straight knife cutting machine is the computer controlled cross cutting machine with the most mature technology and the lowest cost of use and maintenance. Mainly reflected in the following aspects, one is due to the thickness of the tool used, coupled with the improvement of the level of tool manufacturing, this tool is generally no problem within one year, and some do not have to replace two to three years. In addition, due to the fact that the straight knife has been completely localized and its quality is high, it is no longer dependent on imports, and there are many manufacturers and low prices. The current spiral knife is not very ideal, the price is much more expensive than a straight knife, spiral knife design structure because the body is thinner, is half of the straight knife, the installation is more difficult, some manufacturers in the use of six months will have to replace Tool. In summary, if the production line has a maximum speed of 150 meters per minute , it is recommended to configure a computer-controlled straight knife cross cutting machine as an ideal configuration, and its overall cost is reasonable.
　　 3 . The computer controlled spiral knife cutting machine is the latest technology. The cross cutting machine design supported by this technology uses a low moment of inertia tool shaft design, the tool shaft is small, the control difficulty coefficient is relatively low, the power is small, and the high power can be achieved. Production speed requirements, the production line of more than 150 meters per minute must be equipped with a computer-controlled spiral knife cutting machine. This model is a symbol of the technical content of major equipment manufacturers competing, and because of this and the role of propaganda and guidance, many carton enterprises that should not configure such equipment configure such equipment, but due to the aforementioned problems, As a result, the current comprehensive cost of such equipment is high and it is difficult to maintain.
　　 4 . At present, there are DC control systems, DC servo control systems, and AC servo control systems for computer control systems. The selling prices of the above systems increase in turn. The ordinary DC control systems have more production companies and have a longer production time. low. The DC servo control system is a technology developed on the basis of the DC control system. After the paper cutting machine is used in the production process of the cross cutting machine, the brake is required and the red charging module is charged. After the power is released, it is released before the paper cutting. Certain power-saving features, but the system's performance and the former is almost the same. AC servo control system is the latest technology, it can be applied to the production of higher speed, higher cutting accuracy, and is currently used in many high-speed production lines.
　　 5 . Calibration cut-off technology emerges with the application of pre-printing technology in the production of corrugated board. The current computer control system can be installed with this system, but the use effect is different. The better configuration is that the AC servo control system is equipped with a calibration cutoff system, and the use effect is mainly manifested in the higher cutting accuracy. In addition, because the preprinted paper shrinks, the shrinkage is related to the paper and the surrounding environment. In particular, color boxes used in home appliances, because of fine print, the bar code for cutoff recognition is small, and the ability of identification marks and tracking marks is required to be high. In this case, an AC servo control system must be generally installed to set the cutoff system. Only competent.
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