How to Choose an Upper Roller Plate Rolling Machine

Choosing an upper roller plate rolling machine starts with understanding the product. Only after fully understanding its performance, features, functions, and your own needs can you proceed.

Three-roller plate rolling machines are available in mechanical and hydraulic types: Mechanical three-roller plate rolling machines are further divided into symmetrical and asymmetrical types. They can roll metal sheets into circular, arc-shaped, and conical workpieces within a certain range.

Performance characteristics of a mechanical three-roller symmetrical plate rolling machine: This machine has a symmetrical three-roller structure. The upper roller moves vertically up and down symmetrically in the center of the two lower rollers, driven by a lead screw, nut, and worm gear. The two lower rollers rotate, driven by a motor. The output gear of the reducer meshes with the gear of the lower roller to provide torque for rolling the sheet metal. The disadvantage of this machine is that the ends of the sheet metal need to be pre-bent using other equipment.

The hydraulic three-roll symmetrical plate rolling machine has a three-roll symmetrical structure. The upper roll moves vertically up and down symmetrically between the two lower rolls, driven by hydraulic oil in a hydraulic cylinder acting on a piston. The two lower rolls rotate, and the torque for rolling the plate is provided by the output gear of a reducer meshing with the lower roll gear.

When purchasing an upper-roll plate rolling machine, we can gain an initial understanding of the unique features of various plate rolling machines.

1. Mechanical Symmetrical Plate Rolling Machine: Unique features: simple structure, light weight, easy to manufacture and maintain, and low investment. The two side rolls can be made very close together, resulting in more accurate forming, but leaving a large straight edge. A drawback is that the ends of the plate need to be pre-bent using other facilities.

Suitable applications and conditions: For various plate rolling applications requiring pre-bending facilities or without bending edges, a standard symmetrical type is suitable; for plate rolling applications requiring bending edges, a symmetrical type with bending edge pads can be used.

2. Hydraulic Three-Roll Symmetrical Plate Rolling Machine: Unique Features: This model is preferred for large-scale three-roll symmetrical plate rolling machines.

Suitable Applications and Conditions: Suitable for various plate rolling applications requiring pre-bending or no bending; a standard symmetrical model is suitable for applications requiring bending. A symmetrical model with bending edge pads can be used for plate rolling applications requiring bending.

3. Four-Roll Plate Rolling Machine: Unique Features: The four-roll plate rolling machine is the most functional, fastest, and most precise plate rolling machine. Compared to symmetrical upward-adjusting three-roll machines, it has a pre-bending function; compared to downward-adjusting and horizontal-adjusting machines, it has the advantages of smaller straight edges and higher rolling precision. It can also perform certain shaping and leveling work on metal sheets, offering direct pre-bending, saving time and materials, making it a modern and ideal large-scale plate rolling machine.

Suitable Applications and Conditions: Suitable for heavy-duty workpiece rolling and applications requiring high levels of automation and static control.

4. Unique Features of the Upper Roller Universal Plate Rolling Machine:

A. High-Precision End Pre-Bending: The straight edge length can be freely set. The upper roller directly increases pressure during pre-bending, enabling high-precision end pre-bending.

B. NC Control, High Production Rate: The rolling process parameters are NC-controlled, simplifying operation and significantly increasing speed.

C. Exceptional Product Precision: The upper roller is drum-shaped, and the lower roller has adjustable support rollers. Continuous bending allows for rolling ideal products across a wider range from thin to thick plates.

D. Operational Safety: The two lower rollers are fixed, while the upper roller moves up and down and left and right. The workpiece does not move with the lower roller, ensuring operator safety.

E. Integrated Structure, Simple Foundation, Easy Mobility: The integrated chassis eliminates the need for anchor bolts, simplifying the foundation and facilitating easy relocation.

F. Different applications require corresponding control methods. Based on the application, the following control methods apply: TNC (Upper NC): For multi-variety, small-batch production; T & BNC (Upper, Lower NC): For few-variety, large-batch production.

G. The buckling mechanism features O-type, U-type, multi-segment R-type, and auxiliary cone-shaped devices, allowing for the rolling of cones within a certain range. O-type buckling: Rear buckling type; U-type buckling: Front buckling type; Multi-segment R-type buckling: Combined type. Suitable for: Ideal for medium and heavy-duty plate rolling machines.

5. Marine Three-Roll Symmetrical Plate Rolling Machine: Unique Features: This machine features a three-roll symmetrical structure. The upper roll moves vertically upwards and downwards symmetrically between the two lower rolls, driven by hydraulic oil in a hydraulic cylinder acting on a piston rod, thus providing hydraulic transmission. The two lower rolls rotate, with the output gear of the speed reducer meshing with the lower roll gear to supply torque for rolling the plate. Multiple sets of support rollers are located below the two lower rolls to increase their rigidity and allow for vertical adjustment. A rigid rafter is located above the upper roll, with multiple sets of support rollers between the rafter and the upper roll to further increase its rigidity. Suitable for rolling ultra-wide, curved parts.

6. Curved Downward Adjustment Plate Rolling Machine: Unique Features: This machine adopts German technology, is easy to operate, and has a high speed. It is fully hydraulically driven and technologically advanced. Suitable for high-precision cylindrical parts.

7. Three-Roll Asymmetrical Plate Rolling Machine: Unique Features: This machine can roll small-diameter cylindrical parts, and the ends can be formed in one operation.