Cut To Length Line

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Cut To Length Line

what is cut to length line?

A cut-to-length line, also known as a CTL line, is a specialized machine or production line used in the metalworking industry. It is designed to process coils of flat metal sheet or strip into custom-cut lengths according to specific requirements.

The cut-to-length line typically consists of several components that work together to perform various operations. These components may include:

  1. Uncoiler: This device unwinds the metal coil and feeds it into the line for further processing.
  2. Leveler: The metal strip passes through a series of rollers or leveling heads that remove any shape imperfections, such as coil set or crossbow, and ensure a flat surface.
  3. Shear: Once the metal strip is leveled, a shear or cutting unit cuts the strip into precise lengths according to the desired specifications. The shear can make straight cuts or angle cuts, depending on the requirements.
  4. Stacker: The cut pieces are collected and stacked on a conveyor or pallet for easy handling and transportation. The stacker can be automated to arrange the cut lengths neatly.
  5. Control System: A central control panel or computer system manages the entire operation, controlling the speed, cutting lengths, and other parameters of the line.

Cut-to-length lines are commonly used in industries such as steel, aluminum, and automotive manufacturing, where precise and customized metal sheets or strips are required for further processing or assembly. They offer efficient and accurate cutting of large coils into smaller, ready-to-use lengths, reducing material waste and improving production efficiency.

advantages of china automatic cut to length line

China’s automatic cut-to-length lines offer several advantages, which contribute to their popularity and widespread use. Some of the key advantages of China’s automatic cut-to-length lines include:

  1. High Precision: Automatic cut-to-length lines in China are known for their precise cutting capabilities. They utilize advanced technology and precision components to ensure accurate length measurements and precise cuts, resulting in high-quality end products.
  2. Efficient Production: These lines are designed for high-speed operation, allowing for efficient production of cut-to-length metal sheets or strips. They can handle large volumes of material and maintain consistent cutting speeds, contributing to increased productivity and reduced production time.
  3. Customization Options: China’s automatic cut-to-length lines often offer a wide range of customization options. They can be programmed to cut metal sheets or strips into various lengths, widths, and angles, allowing for flexibility in meeting specific customer requirements.
  4. Automation and Integration: These lines are equipped with advanced automation features, such as integrated control systems and sensors, which streamline the production process. Automation reduces the need for manual intervention, minimizes errors, and improves overall operational efficiency.
  5. Material Savings: Automatic cut-to-length lines in China are designed to optimize material usage and minimize waste. The precise cutting capabilities help minimize scrap and maximize the yield from each coil, resulting in cost savings for the manufacturer.
  6. Versatility: China’s automatic cut-to-length lines are capable of processing a wide range of materials, including steel, aluminum, copper, and more. They can handle different thicknesses and widths, making them suitable for diverse applications across various industries.
  7. Quality Control: These lines often incorporate quality control features, such as inspection systems, that ensure the produced lengths meet the specified requirements. This helps maintain consistent product quality and reduces the likelihood of defects or inaccuracies.
  8. Reliability and Durability: Chinese manufacturers are known for producing robust and durable equipment. Automatic cut-to-length lines from China are designed to withstand heavy-duty use and provide reliable performance over extended periods.

It’s important to note that the advantages may vary depending on the specific manufacturer, model, and features of the automatic cut-to-length line. It’s advisable to research and evaluate different options to find the one that best suits your specific production needs.

How does a automatic cut to length line work?

An automatic cut-to-length line consists of several components and processes that work together to cut metal coils into specific lengths. Here is a general overview of how an automatic cut-to-length line works:

  1. Coil Loading: The process begins with loading a metal coil onto an uncoiler. The uncoiler holds the coil and allows it to unwind smoothly as the line operates.
  2. Straightening and Leveling: The metal strip from the coil passes through a straightener or leveling unit. This component consists of a series of rollers or leveling heads that remove any shape imperfections, such as coil set or crossbow, and ensure a flat surface.
  3. Measurement and Feeding: After straightening, the metal strip is fed into a feeding system, which typically consists of a set of rollers. The feeding system moves the strip forward at a controlled speed.
  4. Length Measurement: A length measuring device, such as an encoder or laser measurement system, precisely measures the length of the moving metal strip as it passes through. The measurement is relayed to the control system.
  5. Cutting Process: Once the desired length is determined, the metal strip reaches the cutting unit. The cutting unit can be equipped with different cutting mechanisms depending on the application, such as rotary shears, flying shears, or guillotine shears. These cutting mechanisms make accurate cuts on the metal strip, separating it into individual lengths.
  6. Stacking and Collection: The cut lengths are then collected and stacked on a conveyor or pallet for easy handling and transportation. A stacker or stacking system is often integrated into the line to arrange the cut pieces neatly.
  7. Control System Operation: The entire operation of the automatic cut-to-length line is managed by a control system, which may include a central control panel or a computer-based control unit. The control system receives input from length measurement devices, monitors the cutting process, and controls the speed and other parameters of the line to ensure accurate and efficient operation.
  8. Repeat Process: The line repeats the process continuously, with new coils being loaded onto the uncoiler as the previous coil is depleted. This allows for continuous and efficient production of cut-to-length metal sheets or strips.

It’s important to note that the specific configuration and features of an automatic cut-to-length line may vary depending on the manufacturer, model, and application. Different lines may have additional components or variations in the process to cater to specific requirements and desired outcomes.


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The price of Sussman’s roll forming machines is a little higher than other suppliers’. Let me explain about our machines difference:

Sussman machine design: it is unit one, which means the control box and the hydraulic station are all put under the machine frame, when you get the machine, no need to assemble and connect the complicate cable of the machine, you only need to connect one main cable, then the machine is working. It saves more time and space.

Our display screen is touch screen, not text touch screen.

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Sussman Processing technology: Sussman rollers is through grinding, quenched, chroming,finish machining,polishing,coated with chrome 0.05mm, all rollers are shiny, stronger and avoid rust.etc to make stronger, the roll forming machine is more robust and easier to use.  The metal sheet produced by our machine is always flat and perfect profiles., because in the design and during the machining process, we always control the force for the metal sheet, it does not damage the sheet surface and comes out perfect profile. And we use the German application COPRA, to imitate the situation in 3D and ensure the perfect profile.

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Sussman roll forming system

Sussman roll forming system: We will make the hand wheels at the feeding device to adjust feeding width, and we also make the wheels with the numbers then you know how to adjust right and left sides, also we made the rulers on the bedding, you can adjust the profile height and width according to the rulers.

Screw with numbers is to adjust material thickness easily, also with protecting cap also add laminating film device and felt to make the board flatter and smoother without scratches.

The machine is equipped with a detection switch device, in case of emergency, emergency alarm, stop operation.

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