& nbsp; Longitudinal cutting line is a product that everyone is familiar with, but what we are more concerned about is how to grasp the future of this familiar product, because whoever masters the trend can win the market. Therefore, many companies now need to predict the future, of course, the accuracy is uncertain, but this judgment still needs to be made. So today, let's talk about what kind of development longitudinal cutting production line will have in the future, and what opportunities we can seize. I believe these issues are of great concern to everyone. Let's first take a look at the coil thickness of 0.3-3mm, coil width of 1850mm, and longitudinal cutting width of 30mm. The processing cost of the longitudinal cutting and slitting machine with no damage to the surface of the coil is higher, and it is also easier to recover the investment Now there is a pressure plate type There are several types of belt tension and roller tension Everything has evolved from several forms The biggest advantage of the pressure plate type is its low cost. When doing high-speed production line tension, it is easy to damage the board and may also cause high-temperature spontaneous combustion of the felt; Belt tensioning is not necessary for high-speed applications, as it results in high belt wear and high operating costs. Only materials with undamaged surfaces are willing to be used, and the manufacturing cost of belt tensioners is also high Nowadays, models that exceed 300M/MIN are mixed with roller tension and plate roller tension. Why is this the case?  & nbsp; The main control panel is the core of the main control system, which is composed of industrial control machine (286-586) systems. From the above, it can be seen that the higher the speed, the lower the costs. So why do so many people choose the 120 meter line speed? Because the cost of making low-speed machines is lower and the quotation is cheaper now, generally 220 meters is equivalent to twice the price of 120 meters, and there are not many factories that can do it. Only those big factories in the world can achieve 420 meters. Now, Taiwan factories have formed a price tag that is twice that of domestic factories, and the speed is higher. Germany, Japan and other big factories have 4-10 times that of domestic factories. Taking the longitudinal cutting and slitting line of the 1350 thin plate fully automatic model as an example. A complete control system should have the following functions: it should be able to monitor the dynamic operation of the production line. The application of high-tech with no damage to the surface of three rolls. The production of longitudinal cutting and slitting lines with a speed of over 300 meters by well-known Taiwanese manufacturers is not long coming. According to customers, only Germany can produce them. One is a recognition system composed of an industrial camera system and a computer. Its basic working principle is to use the industrial camera system to capture the image of the sprayed workpiece at regular intervals, and then compare it with the standard image in the computer to test which standard image corresponds to it. This can determine which type of workpiece has entered the work area, and then send the workpiece number to the control system. This can increase the communication distance between them, usually reaching around 1.5km. Based on the workpiece number provided by the main control panel, the single machine automatically assigns the corresponding program number for automatic spraying operations. Parallel bidirectional communication method with handshake. Its functional block diagram is shown in Figure 2. If it is to be used for communication in the main control system, with drivers added to both ends of the master and slave machines, the connection cannot exceed 5m, so this method is generally not used now. The processing cost of the longitudinal cutting and slitting machine with no damage to the surface of the coil is higher, and it is also easier to recover the investment Now there is a pressure plate type There are several types of belt tension and roller tension  & nbsp;& nbsp; Cutting thickness: 0.3-1.5mm. Taking the 1350 thin plate type fully self reading head type longitudinal cutting line as an example. Cutting speed: 5-100m/min, normal operation: 30-80m/min. Quality requirements: no knife marks, no skirt edges, and no scratches on the surface of the strip. Two energy-saving components and scaling. Cutting accuracy: ± 0.1mm. The longitudinal cutting production line mainly consists of a feeding trolley, an uncoiler, a traction leveling machine, a shearing machine, a longitudinal cutting machine, a waste edge winding machine, a tension mechanism, a winding machine, and a unloading device. Only in that way can it be easier to manufacture and maintain, and product standardization is conducive to improving production efficiency and facilitating after-sales service. Some parts from large factories are not universal and cannot be purchased in the market, making maintenance very difficult. In the future, universal parts will be needed. There are feeding trolley, unwinding machine, clamping machine, guide device I, disc shearing device, guide device II, loop device, tension generating device, winding device, feeding trolley, waste edge winding device, hydraulic control device, electrical control device, etc. The annual expenses that can be saved due to factory rent and labor are as follows. The production line covers an area of approximately 25X8 meters; At present, the line speed of low technology is 120M. Now some factories have got 250M of thin plate line, and the Germans have got 700M. This device is mainly used for slitting aluminum/steel strips with a width not exceeding 800mm and a thickness not exceeding 1.5mm. Strip specifications, tensile strength: δb≤245Mpa。 Due to the increasing demand for energy conservation and emission reduction, as well as higher factory costs, some old and technologically outdated longitudinal cutting and slitting lines will be phased out. More and more processing companies and factories will choose longitudinal cutting and slitting lines with the following characteristics. Users can arrange the longitudinal width according to their needs. Elongation rate: 30%.