A 3-roller plate rolling machine, also known as a three-roll bending machine, is a specialized equipment used in metalworking and fabrication processes to roll and shape metal plates into cylindrical or conical forms. It is commonly used in industries such as manufacturing, construction, and shipbuilding, where curved metal components are required for various applications.
The 3-roller plate rolling machine gets its name from the three main rollers that are used in the bending process. The machine consists of the following components:
- Base and Frame: The base provides stability and support for the machine, while the frame holds the essential components together. The frame is designed to withstand the forces generated during the rolling process.
- Top Roll (Upper Roll): The top roll is the largest roll located at the top of the machine. It is driven by a motor and can move vertically to apply pressure and create bending force on the metal plate.
- Bottom Rolls (Lower Rolls): The two bottom rolls are smaller in diameter compared to the top roll and are positioned at the bottom of the machine. They are typically fixed in position and provide support and guidance to the metal plate during the rolling process.
- Hydraulic System: The 3-roller plate rolling machine is often equipped with a hydraulic system that controls the movement of the top roll. It enables precise and synchronized adjustment of the roll position and bending force.
- Control Panel: The control panel houses the necessary controls, switches, and indicators for operating the machine. It allows operators to control the movement of the rolls, adjust bending parameters, and monitor the rolling process.
The operation of a 3-roller plate rolling machine generally involves the following steps:
- Preparation: Set up the machine by adjusting the position of the bottom rolls based on the desired plate width and diameter of the final rolled shape. Ensure the machine is in proper working condition and the necessary tooling is in place.
- Plate Placement: Position the metal plate between the bottom rolls with one end protruding slightly.
- Rolling Process: Activate the machine using the control panel. The top roll moves downward, applying pressure on the metal plate. As the plate passes between the top and bottom rolls, it is gradually bent and shaped into a cylindrical or conical form.
- Adjustment and Repeated Passes: After each pass, adjust the position of the top roll and the plate’s feeding direction to continue rolling until the desired curvature is achieved. Multiple passes may be required depending on the plate thickness and curvature requirements.
- Unloading: Once the rolling process is complete, raise the top roll to its initial position, and carefully remove the rolled plate from the machine.
3-roller plate rolling machines offer several advantages, including:
- Versatility: These machines can handle a wide range of plate thicknesses and materials, allowing for flexibility in rolling various metals such as steel, aluminum, and stainless steel.
- Precision and Consistency: The hydraulic system provides precise control over the bending force and roll positioning, ensuring accurate and consistent results.
- Time and Labor Efficiency: 3-roller plate rolling machines enable efficient and faster rolling processes compared to manual methods, reducing production time and labor costs.
- Cost-Effective: By utilizing a single machine, complex curved shapes can be formed without the need for additional tooling or processes.
In summary, a 3-roller plate rolling machine is a specialized metalworking equipment used to roll and shape metal plates into cylindrical or conical forms. It utilizes three main rollers, with the top roll applying pressure to bend the metal plate between the bottom rolls. These machines provide versatility, precision, and efficiency in producing curved metal components for various industrial applications.