1. Core performance advantages ‌High one-time forming efficiency‌ Using the synergistic effect of the upper roller (steel roller) and the lower roller (elastic roller), the plate can be bent and formed by one pressurization, without the need for pre-bending process, significantly shortening the processing cycle, especially suitable for the continuous production of thin-walled pipes such as exhaust pipes14. ‌High precision and surface quality‌ The elastic layer of the lower roller is made of composite materials, with uniform stress distribution and small roller deflection, ensuring high geometric accuracy and smooth surface without scratches after forming, meeting the stringent requirements of exhaust pipes and other products for sealing and appearance14. ‌Dynamic adjustment capability‌ The upper and lower roller spacing and pressure are precisely adjusted through the PLC control system, combined with servo drive technology, which can adapt to the processing requirements of exhaust pipes of different diameters, and the processing process is highly stable46. 2. Structural design features ‌Optimized roller group configuration‌ The upper roller is a rigid steel roller, and the lower roller uses a steel roller core with an elastic layer (such as polyurethane) wrapped around it, which not only ensures the pressurization strength, but also avoids surface damage caused by metal contact, and improves the forming quality of the exhaust pipe46. ‌Automation Integration‌ Equipped with automatic loading, rolling and unloading functions, the whole process is automated through PLC control, reducing manual intervention and improving batch production efficiency45. III. Scope of application and limitations ‌Applicable scenarios‌ Mainly for metal sheets with a thickness of 0.5-6mm, especially good at processing carbon steel, stainless steel and aluminum plates with a yield strength of ≤350MPa, widely used in rapid prototyping of thin-walled cylindrical parts such as automobile exhaust pipes and ventilation ducts24. ‌Limitations‌ A single processing requires matching a specific upper roller mold, and the cost is relatively high when producing small batches and multiple specifications2; The maximum processing thickness is usually ≤10mm, which is not suitable for heavy plate processing28.

The core features of the two-roller plate rolling machine are mainly reflected in the following aspects: 1. Structural characteristics Simple and compact Adopting a two-roller structure (the upper roller is a steel roller, and the lower roller is a steel roller core with an elastic layer), the number of rollers is minimal, and the mechanical complexity is low; Elastic layer design The high elastic composite material of the lower roller makes the plate force uniform, reduces the roller deflection, and avoids surface scratches. 2. Production efficiency One-time forming No need to pre-bend the plate end, continuous bending and forming can be completed directly, shortening the processing cycle; High-speed processing The processing cycle of a single finished product can be shortened to 30 seconds, which is especially suitable for mass production of thin plates. 3. Processing accuracy No residual straight edge The plate is bent over the entire length, reducing the trimming process, and the finished product has accurate roundness; High dimensional stability Strict tolerance control, smooth and flat surface, suitable for high-precision parts (such as automobile exhaust pipes, thin-walled pipes, etc.). 4. Scope of application Applicable materials‌ Mostly used for rolling of metal thin plates such as carbon steel and aluminum plates (usually ≤6mm, carbon steel ≤5mm); Applicable fields‌ Covering automobile manufacturing, fire-fighting equipment, solar water heaters, ventilation ducts and other fields, especially suitable for small-diameter workpieces (diameter ≤1300mm). 5. Automation capability Intelligent control‌ Support PLC control of the whole machine operation, integrating automatic loading, rolling and unloading processes to reduce manual intervention; CNC compatibility‌ The operation interface is friendly and easy to integrate with the production line to realize CNC production. 6. Limitations Thickness limit‌: Not suitable for processing thick plates (generally carbon steel thickness >5mm); Poor adaptability to small batch production‌: The roller needs to be replaced frequently, affecting processing flexibility.

Features of Four-roller Plate Rolling Machine ‌1. High-precision forming‌ The four rollers work together to precisely control the curvature radius and shape of the plate, achieving a forming effect that is highly consistent with the design drawings18. ‌2. Small residual straight edge‌ The pre-bending function of the plate end significantly reduces the residual straight edge after processing and improves material utilization16. ‌3. Multi-function and strong adaptability‌ Supports rolling of round, arc, conical and special-shaped workpieces, and is suitable for plates of different thicknesses (as thin as metal sheets and as thick as alloy plates) and materials (carbon steel, stainless steel, aluminum alloy, etc.)46. ‌4. Automation and stability‌ Adopting PLC control, touch screen interface and hydraulic transmission technology, it realizes automatic leveling and displacement control, and the structure is sturdy and durable, with strong pressure resistance37. ‌5. High processing efficiency‌ The multi-roller continuous rolling design supports one-time pre-bending and rolling, reduces turning operations, and improves production efficiency

The characteristics of the four-roller plate rolling machine mainly include high forming accuracy, wide range of applications, flexible and convenient operation, stable and durable structure and some other special design advantages. 1. High forming accuracy: The four-roller plate rolling machine can achieve delicate adjustment of the curvature radius of the plate by precisely controlling the coordinated operation of the four rolling rollers, ensuring that the workpiece fits perfectly with the design drawings, showing extremely high forming accuracy. 2. Wide range of applications: The four-roller plate rolling machine is never picky about the thickness and material of the plate. Whether it is thin metal sheets or heavy alloy plates, even common materials such as ordinary carbon steel, stainless steel, and aluminum alloy, it can be rolled. 3. Flexible and convenient operation: The design of the four-roller plate rolling machine fully considers the humanized needs. The operator only needs to gently adjust the parameters to quickly respond to the rolling needs of workpieces with different shapes, and realize an efficient and accurate rolling process. 4. Stable and durable structure: The overall structure of the four-roller plate rolling machine is rigorously designed. The four rollers and their supporting components, transmission mechanisms, etc. are carefully laid out and strengthened to ensure that they can remain stable even in the face of huge forces during the rolling process, ensuring the smooth progress of the rolling operation and the quality of the product. 5. Other special design advantages: such as the pre-bending function of the plate end, small remaining straight edge, and high work efficiency.

The complete set of round tube equipment is equipped with a four-roller rolling machine, a linear welding machine and a round tube flanging machine. It has the advantages of easy operation, stable operation and excellent production efficiency. It helps to improve product quality, increase production benefits and reduce the labor burden of workers.

Features of four-roller CNC plate rolling machine The four-roller CNC plate bending machine is an advanced equipment in the field of metal processing and has the characteristics of high-precision control, high efficiency and flexibility, stability and reliability, and easy operation and maintenance. The equipment adopts an advanced CNC system, which can accurately control the plate rolling process, improve product quality and stability, reduce the scrap rate, and bring economic benefits to the enterprise. The four-roller CNC plate rolling machine adapts to the needs of metal coils of different specifications and materials. Adjusting the roller spacing and angle can easily realize the processing of metal coils of different thicknesses and widths. The CNC system supports multiple programming methods to improve production efficiency and flexibility. The equipment pays attention to stability and reliability, using high-quality materials and advanced technology to ensure long-term stable operation. Equipped with a complete fault detection and alarm system to detect and deal with problems in a timely manner to ensure the smooth progress of the production process. The operation interface is user-friendly and the control system is intelligent, allowing users to easily complete the plate rolling operation. The equipment has automatic fault diagnosis and prompt functions, reducing maintenance costs and time costs. In summary, the four-roller CNC plate bending machine has broad application prospects and market demand in the field of metal processing, and will continue to play an important role in creating greater value for enterprises.

Our new 4-roller line offers many advantages. It is the easiest to use hydraulic press brake, thanks to the ability to clamp the plate between two motorized center rollers, pre-bend at the ends, and bend in one direction and through the entire body in one pass. Due to the constant squeezing of the center roller, the board remains square without slipping during pre-bending and bending cycles. This makes our 4-roller machines ideally suited to be controlled by NC or CNC. This machine is reliable and effective. The parallelism of the side rollers is controlled by a torsion bar system attached to both ends of the side rollers, eliminating the disadvantages of additional encoders and special hydraulic balancing valves. The two center rollers are driven by hydraulic motors and efficient planetary gearboxes coupled directly to the rollers. The MG solution assembles the rollers on sealed bearings without auxiliary parts, which reduces the dispersion of applied forces caused by friction of various components (commonly used in synchronization systems of other press brakes). The side rollers move up and down on planetary oscillating guides: the perfect geometry eliminates the disadvantages of linear gears. This allows us to have hydraulic pumps with lower flow motors, thus saving energy.

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