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A cut to length line is an automated production system that integrates several machines to perform the complete process of uncoiling, leveling, measuring, cutting, and stacking metal coils into flat sheets. Unlike a standalone machine, a "line" implies a coordinated system where components are matched for a specific production capacity and material range. Shijiazhuang Faith Machinery Co., Ltd. designs and manufactures these integrated lines to provide a turnkey solution for high-volume, high-precision blanking.
The configuration of a cut to length line is tailored to the end user's requirements, but a standard setup includes several key components working in sequence. The process starts with a loading device, which can be a simple coil car or a more sophisticated overhead crane system, to place the heavy steel coil onto the decoiler. The decoiler then feeds the coiled strip into the line. An entry loop pit is sometimes incorporated between the decoiler and the leveling machine. This loop acts as a buffer, allowing the decoiler to feed material continuously even when the leveler is stopping and starting during the cut cycle, thereby ensuring a smooth, non-stop operation.
The heart of the line is the precision leveling machine. This unit contains multiple small-diameter work rolls that systematically remove the internal stresses and deformities from the coiled material. The effectiveness of this leveling determines the final flatness of the finished sheets. Following the leveler, the flattened material is fed by a servo-driven feeding unit. This system uses an optical encoder for closed-loop feedback, guaranteeing that the length of each fed section is extremely accurate.
The cutting mechanism, typically a hydraulic shear, is triggered once the correct length is achieved. The shear blade cuts the entire width of the sheet in a single stroke. Downstream of the shear, the line includes a run-out conveyor or a stacking station. Advanced stacking systems can include magnetic or vacuum lifters to gently transfer the cut sheet onto a pallet or stack, ensuring alignment and protecting the material's surface finish. For marking or inspection, the line can also be equipped with a reject station or an inkjet printer.
The entire cut to length line is controlled by a centralized automation system. The PLC allows operators to store multiple production recipes for different sheet sizes and materials, enabling quick changeovers. These lines from Shijiazhuang Faith Machinery Co., Ltd. are utilized across various sectors, including the automotive, appliance, and construction industries, where they provide a reliable method for producing precise blanks for pressing, punching, and other fabrication processes, significantly improving material handling efficiency and production throughput.
