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In the metal forming industry, automatic steel coil slitting production lines are widely used in various industries to provide maximum convenience. Coil slitting is very similar to roll slitting, which is a shearing operation that cuts large rolls of material into narrower rolls for users to use.
There are two types of slitting, one is log slitting, and the other is rewind slitting. In log slitting, one or more slices can be taken out without unrolling the material roll. In rewind slitting, the material roll needs to be unwound and run through the cutter or laser on the machine, and then wound on one or more shafts to form a narrower roll. In fact, if the diameter of the material is much larger than its width, then multiple narrower strips of material can be called multiple or pancakes.
In the slitting of hard materials, such as sheet metal materials, blades cannot be used as a slitting tool, but a modified shearing method must be applied. Using two cylindrical rollers with matching ribs and grooves to cut a large roller into multiple narrower rollers, this continuous production process is economical and precise. Such shearing method is even more precise than most slitting techniques.
On the other hand, for slitting soft materials such as plastic films, textiles, adhesive tapes, and paper, the slitting tools may include razor blades, straight blades, or circular blades. Some blades cut into the material, while others crush the material against the hard roller. In addition, the cutting blade can be set to the desired width. Sometimes one machine has several blades, can produce multiple output rollers at a time, and rewind the cut material on a paper, plastic or metal core on the exit side of the machine.
This slitting method is cost-effective, high-precision, and can be used for mass production, and some machines have the function of monitoring and trimming the blade to maintain the quality and accuracy of the cut at any time.
This type of slitting machine operates between 10m per minute and 5000m per minute according to different workpiece materials. It can also be operated with an automatic control system to accurately control the tension of the material, automatically position the slitting knife, and automatically align the core of the wound material, thereby reducing manual operations.
The trend of industrial automation started in the Western world. Due to the increasing cost of employees in Europe and the United States, this situation is conducive to accelerating the development of automation technology. It provides NC and CNC programming control systems for factory managers.
Meanwhile, in the rest of the world people had not yet realized the urge to go with the trend, yet this did not hinder their progression in this path as many of the Eastern exporters learn how to cope with their Western customers’ needs by offering them the corresponding automation equipment assisting customers deal with the cost down policy, which helped manufacturers in Taiwan, Japan, China, and other places to learn about the automation and smart control.
At the same time, in other parts of the world, although automation systems have not yet been widely used in the industrial field, this has not prevented them from advancing along this path, because many oriental manufacturers and traders have also begun to reduce production cost by building automation systems, while meeting the needs of Western customers. In turn, it helps manufacturers in Taiwan, Japan, China and other regions to understand automation and intelligent control.
Through different processing, metal plates can be used to make a variety of very useful products. Depending on the thickness and material, sheet metal can be created with a variety of shapes and textures. These industrial or daily necessities are mass produced, and rapid manufacturing is the key to mass production. Therefore, the slitting machine, cutting machine and other metal forming machine all need to be integrated with an automated system.
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