PLC Controlled Trapezoidal Roof Sheet Roll Forming Machine

This automatic trapezoidal roof sheet roll forming machine converts coated or uncoated metal coil into durable roofing sheets and wall cladding panels through a continuous cold-forming process. The strip passes through a sequence of precision forming rollers, where it is gradually shaped into the required trapezoidal profile. An encoder measures the running length, and the hydraulic cutting unit cuts each finished panel according to the values entered on the PLC touch screen.

The machine shown is equipped with a reinforced welded base, multi-station forming bed, hydraulic post-cutting system, independent control console and hydraulic power unit. This configuration is suitable for roofing-sheet plants, steel-structure manufacturers, building-material suppliers and contractors that require repeatable panel quality and flexible production settings.

Core Benefits

• Automatic coil-to-sheet production improves efficiency and reduces manual work.

• PLC and touch-screen control simplify length, quantity and batch programming.

• Progressive roll-forming stations help maintain stable ribs and smooth sheet surfaces.

• Encoder measurement provides repeatable panel length control.

• Hydraulic cutting delivers reliable shearing force and clean finished ends.

• Heavy-duty welded structure improves rigidity and reduces vibration.

• Adjustable feeding guides support accurate strip alignment.

• Customized roller tooling can match regional roofing profiles and customer drawings.

• Multiple decoiler, stacker and safety options are available for complete line solutions.

• Suitable for galvanized, pre-painted, Galvalume and aluminum roofing materials.

Typical Technical Attributes and Customizable Specifications

Notice: The specifications below are common reference values. The final machine configuration is determined by the panel drawing, raw material, thickness range, steel strength, required speed and selected auxiliary equipment.

Standard Production Line Composition

1. Decoiler: Holds the coil and feeds the metal strip into the forming line.

2. Feeding and Guiding Unit: Aligns the strip and controls its entry position.

3. Roll Forming Section: Gradually shapes the material through multiple roller stations.

4. Transmission System: Transfers motor power to the forming shafts through chains, gears or gearboxes.

5. Length Measuring System: Monitors material travel using an encoder.

6. Hydraulic Cutting Unit: Cuts the panel to the programmed length.

7. PLC Control Console: Controls length, quantity, operating mode and machine status.

8. Run-Out Table or Stacker: Receives and organizes completed roofing panels.

Working Process

Coil loading → decoiling → material feeding → strip alignment → progressive roll forming → encoder length measurement → hydraulic cutting → finished panel discharge → manual collection or automatic stacking.

Roofing and Cladding Applications

The finished trapezoidal panels are widely used for industrial workshops, warehouses, logistics centers, agricultural sheds, garages, commercial buildings, steel-structure enclosures, wall cladding, prefabricated houses, temporary buildings and roof-renovation projects.

Customization Options

Roofing profiles differ by region and construction standard. The forming rollers and cutting die can be developed according to a CAD drawing, dimensioned sketch or physical sample. Custom parameters include coil feeding width, effective panel width, rib height, rib pitch, overlap edge, anti-capillary groove, material thickness, steel grade and surface coating.

Optional line equipment includes a hydraulic decoiler, coil loading car, entry leveler, pre-cutting shear, protective film unit, punching station, servo flying cutter, automatic stacker, safety enclosure, light curtain and remote-monitoring package.

Panel Quality Features

• Progressive roller design minimizes sudden deformation and helps protect coated surfaces.

• Precision shaft and roller alignment supports consistent panel width and rib geometry.

• Adjustable guides reduce strip deviation at the machine entrance.

• Stable base construction helps reduce vibration during continuous production.

• Correctly selected cutting dies help produce clean panel ends with limited distortion.

Operation and Maintenance Guidance

• Inspect roller alignment, fasteners, chains, wiring and hydraulic connections before operation.

• Keep the forming rollers clean to prevent marks on painted and coated materials.

• Lubricate bearings, chains, gears and sliding components at the recommended intervals.

• Calibrate the encoder after installation and whenever cut-length accuracy changes.

• Inspect the cutting blades regularly and sharpen or replace them when necessary.

• Keep the electrical cabinet and touch screen protected from dust, water and impact.

Factory Testing Before Shipment

The line is assembled and commissioned before delivery. Typical inspection items include frame level, shaft alignment, roller clearance, transmission operation, hydraulic pressure, electrical control, emergency stops, encoder measurement, panel dimensions, surface condition and cut quality. Trial production can be completed with suitable test material when available.

Information Required for a Precise Quotation

• Panel profile drawing with all dimensions

• Raw material type, grade and yield strength

• Minimum and maximum material thickness

• Coil feeding width and required cover width

• Required production speed and daily output

• Coil weight and inner diameter

• Local voltage, frequency and phase

• Required auxiliary equipment and safety options

Frequently Asked Questions

Can the machine be made for a local roofing profile?
Yes. The roller tooling and cutting die can be designed according to the customer's dimensioned drawing or sample panel.

Can it process high-strength steel?
Yes. Roller material, shaft size, motor power, station quantity and frame structure are selected according to the steel grade and thickness.

Can different sheet lengths be produced in one order?
Yes. Different lengths and quantities can be entered through the PLC touch screen for flexible batch production.

Is automatic stacking available?
Yes. Manual run-out tables, powered conveyors and automatic stacking systems can be selected according to the panel length and line speed.