LIVA OEM-CN 4R 2000x450 mm 4Rolls Hydraulic Plate Bending Machine With NC (LIVA OEM-CN 4R 2000x450 )

Why Choose a 4 Roll Rolling Machine

Our 4-roll plate bending machine offers superior precision and efficiency compared to traditional 3-roll systems.

• The bottom roll moves upward to securely clamp the plate against the top roll.
• Side rolls move independently to achieve accurate pre-bending, minimizing flat edges.
• Plates are fed horizontally at working level, improving handling and reducing labor effort.
• Compatible with motorized roller tables for smooth and controlled feeding.
• Feeding can be performed from both sides; single-side operation allows wall positioning to save space.
• Independent roll movements ensure precise bending geometry.

Key Advantages:

• No need for plate flipping during pre-bending
• Reduced operator dependency
• Consistent squaring and alignment
• No slipping due to constant clamping force

Automatic Alignment During Rolling

The machine is equipped with an automatic alignment system to ensure precise and stable plate positioning:

• Side rolls are automatically aligned during operation.
• Functions similarly to a hydraulic guiding system.
• Ensures consistent bending accuracy throughout the process.

Key Benefits:

• Eliminates misalignment errors.
• Improves product quality.
• Reduces operator intervention.

Cone Bending Capability

Our 4-roll machine is highly efficient for cone rolling applications.

• Side rolls can be tilted to form precise cone angles.
• Bottom roll provides strong clamping and driving force.
• Equipped with high-precision guiding systems for controlled movement.
• Designed for long service life and heavy-duty operation.

Performance Features:

• Ability to bend diameters as small as 1.1 × top roll diameter.
• Achieves one of the tightest bending radii in the industry.
• Capable of both large and small diameter conical bending.
• Minimal operator effort required.

Comparison:

• Standard machines: ~3 × top roll diameter (cone bending limit).
• Our machine: ~1.5 × top roll diameter or smaller.

General Benefits

• Heavy-duty machine frame
• High bending accuracy
• Operator-friendly system
• Suitable for continuous industrial use

General Advantages of 4-Roller Plate Rolling Machine

Four-roll plate bending machines provide significant advantages over conventional three-roll machines:

• Higher precision and bending accuracy
• Faster and more efficient operation
• Greater versatility for different applications
• Safer and easier operation
• Reduced dependency on operator skill

Symmetrical Three-Roll Function Capability

The machine can operate as a symmetrical three-roll plate bending system when required:

• Top roll remains fixed in position
• Side rolls move linearly up and down around the central axis
• Easy adjustment via control console
• Allows the three rolls to form a symmetrical configuration

Benefit:

Flexibility to switch between four-roll and three-roll bending operations depending on application requirements.

One-Time Loading – No Plate Turning Required

The four-roll system allows complete processing of the plate without repositioning:

• Bottom roll clamps the plate securely
• Side rolls move independently for precise pre-bending
• Machine operates like two asymmetrical three-roll systems in one cycle

Process Advantage:

• Pre-bending of both ends in a single setup
• No need to turn or flip the plate
• Reduced handling time and labor

Operational Efficiency

• Continuous and stable clamping prevents slipping
• Improved alignment and squareness of the plate
• Faster production cycles
• Lower operator fatigue

Wide Rolling Range

Our 4-roll plate bending machine offers a significantly wider rolling range compared to conventional 3-roll machines.

In traditional three-roll machines:

• Lower rolls are driving rolls, upper roll is passive
• Higher risk of slipping, especially with thin plates and small diameters
• Minimum plate thickness typically limited to 1/3 of maximum capacity
• Minimum rolling diameter approx. 2.5 × top roll diameter

In our 4-roll system:

• Both upper and lower rolls act as main driving rolls
• Stronger grip ensures no slipping, even with thin materials
• Capable of rolling plates down to 1/5 of maximum thickness capacity
• Minimum rolling diameter can reach 1.1 × top roll diameter

Flexibility & Application Range

• Suitable for both thin plates and large diameter workpieces
• Can be equipped with inner and outer support brackets
• Ideal for applications requiring high precision across a wide thickness range

Key Advantages

• Extended working range
• Improved bending performance for thin materials
• Ability to achieve tighter diameters
• Enhanced stability and control