PLC Controlled Trapezoidal Metal Roofing Sheet Roll Forming Machine

This automatic trapezoidal roof panel production line converts flat metal coil into accurately formed roofing and wall-cladding sheets through a continuous cold roll forming process. The machine is suitable for factories producing metal roof panels for industrial buildings, warehouses, workshops, agricultural facilities, prefabricated structures and commercial construction projects.

The equipment shown is built with a rigid welded steel frame, multiple precision forming stations, hydraulic cutting unit, independent hydraulic power system and an operator-friendly control console. The forming rollers gradually shape the strip to reduce stress concentration, protect the coated surface and improve finished-panel consistency.

Main Advantages

• Automatic production from coil feeding to fixed-length cutting

• PLC and touchscreen operation for easy parameter setting

• Encoder-based length control and automatic batch counting

• Heavy-duty frame for stable long-term industrial operation

• Profile-matched hydraulic cutting for clean panel ends

• Custom roller design for different trapezoidal roofing profiles

• Suitable for galvanized, Galvalume, color-coated steel and aluminum coils

• Optional decoiler, leveling, punching, stacking and packaging equipment

Typical Product Attributes and Technical Configuration

Specification notice: The following data represents common industry configurations. Final machine specifications are determined by the approved panel drawing, raw-material grade, thickness range, required production speed and electrical standard.

How the Machine Works

1. Coil loading: The metal coil is placed on the decoiler and aligned with the production line.

2. Guiding: Adjustable entry guides center the strip before forming.

3. Progressive roll forming: Multiple roller stations gradually create the trapezoidal ribs while controlling panel width and edge shape.

4. Length measurement: The encoder continuously measures the moving panel and sends data to the PLC.

5. Automatic cutting: The hydraulic cutting unit cuts the sheet when the programmed length is reached.

6. Receiving and stacking: Finished panels move onto receiving tables or an optional automatic stacker.

Typical Finished-Panel Applications

Panels produced by this line can be used for industrial workshop roofs, warehouse cladding, logistics buildings, agricultural sheds, commercial structures, garages, carports, prefabricated houses, modular buildings, temporary buildings and general steel-structure construction.

Available Production-Line Options

• Manual decoiler with standard roll former and receiving tables

• Hydraulic decoiler with coil car and entry leveling unit

• Servo high-speed line with tracking or flying-cut system

• Inline punching and marking system

• Double-layer machine for two different roof profiles

• Automatic stacking, counting, strapping and packaging line

Information Needed for Custom Design

For an accurate proposal, please provide the finished-panel drawing, material type, material grade, thickness range, input coil width, effective cover width, rib height, rib pitch, required line speed, cutting method, local voltage and preferred auxiliary equipment.

Quality Control

Before shipment, the complete line is assembled and tested. The roller sequence, shaft alignment, transmission system, hydraulic cutting action, electrical controls, PLC program, encoder measurement and finished sample dimensions are checked against the approved technical requirements.

Maintenance Recommendations

• Clean roller surfaces and remove metal particles after production.

• Lubricate bearings, chains, gears and guide components regularly.

• Check hydraulic oil level, hose connections, filters and pressure settings.

• Verify cutting-blade clearance when material thickness changes.

• Keep the electrical cabinet clean, dry and well ventilated.

• Inspect fasteners, transmission alignment and safety devices periodically.

Service and Support

TOPPO can provide remote installation guidance, commissioning support, operator training, maintenance advice and spare-parts service. Optional on-site engineering support can be arranged according to the destination and contract terms.