PLC Controlled Trapezoidal Roof Panel Roll Forming Machine

The TOPPO trapezoidal roof panel roll forming machine is a complete cold-forming solution for manufacturing ribbed metal roofing and wall cladding panels. It is suitable for factories that require efficient, repeatable and flexible production of trapezoidal steel sheets for industrial, commercial and agricultural building projects.

The machine shown features a heavy welded base, multiple forming stands, precision rollers, hydraulic cutting equipment and an independent touch-screen control unit. During operation, the metal coil is guided into the forming section, shaped gradually through successive roller stations, measured by an encoder and cut automatically to the programmed length.

Main Features

• PLC and touch-screen control for automatic production

• Programmable panel length, quantity and production batches

• Stable multi-station forming process for consistent rib geometry

• Hydraulic cutting system for accurate finished panel ends

• Heavy-duty frame designed for continuous industrial use

• Precision-machined rollers help reduce marks on coated steel

• Adjustable feeding guides improve coil alignment

• Manual, jog and automatic operation modes

• Custom tooling available for different trapezoidal profiles

• Optional decoiler, leveling, film laminating, punching and stacking units

Typical Technical Specifications

Important: Values below are typical reference data. Final parameters are determined by the customer's profile drawing, raw material, coil thickness, yield strength, target speed and local power supply.

Production Process

Coil loading → decoiling → feeding and alignment → optional leveling → progressive roll forming → encoder measurement → hydraulic cutting → panel discharge → optional automatic stacking.

How the Machine Works

The coil strip enters the machine through adjustable guides. Each roller station makes a small, controlled deformation until the required trapezoidal shape is completed. Progressive forming distributes stress evenly across the sheet and helps maintain panel straightness. The encoder continuously measures travel distance, while the PLC activates the hydraulic cutter when the programmed length is reached.

Typical Applications

Finished trapezoidal sheets can be used in industrial warehouses, steel structure workshops, logistics buildings, agricultural sheds, garages, commercial properties, modular structures, temporary buildings and general wall cladding or roofing projects. Dedicated roller tooling can be designed for various rib heights, pitches and effective cover widths.

Available Customization

• Single-layer, double-layer or cassette-type forming line

• Manual, hydraulic or automatic coil decoiler

• Pre-cutting, post-cutting or servo flying cutting

• Entry leveling and high-precision feeding system

• Automatic protective film application

• Online hole punching or embossing

• Automatic discharge conveyor and stacker

• Customer-selected PLC, inverter and electrical brands

• Remote diagnostics and production data connection

• Customized voltage, frequency, control language and paint color

Quality Inspection Before Delivery

The complete line is assembled and tested before shipment. Inspection covers frame alignment, roller rotation, shaft installation, transmission stability, hydraulic pressure, cutter movement, electrical controls, encoder measurement and automatic production logic. Trial forming is performed with suitable material to check profile dimensions, panel appearance, cutting tolerance and continuous operation.

Operation and Maintenance

For reliable operation, the coil centerline should be aligned with the forming line, chains and fasteners should be checked regularly, hydraulic oil should be maintained at the specified level, and moving parts should be lubricated according to the maintenance schedule. Forming rollers must be kept clean to prevent surface marks. Electrical and hydraulic maintenance should be carried out only by trained personnel after power isolation.

Packing and Shipment

The main machine is fixed securely for container transport. Exposed steel surfaces receive anti-rust treatment, electrical parts are protected against moisture, and loose accessories are packed separately. Installation drawings, operating documentation and a loading plan can be prepared before shipment.

Frequently Asked Questions

Can one machine produce different trapezoidal profiles?
A conventional roller set normally produces one dedicated profile. For multiple products, a double-layer or cassette-type system can be designed.

What information is needed for a quotation?
Please provide the panel drawing, material type, thickness range, coil width, yield strength, target production speed, power supply and preferred auxiliary equipment.

Can the machine process high-strength steel?
Yes. The shaft diameter, roller stations, motor power and frame structure are selected according to the material strength and profile geometry.

Is the line tested before shipment?
Yes. The machine is assembled, programmed and trial-run before dispatch according to the agreed technical specification and acceptance procedure.