Double-layer roll forming machine

This double-layer roll forming machine is integrated dual-profile cold forming equipment, equipped with two independent sets of forming roller systems inside one machine frame. It can manufacture two different metal roof tiles separately, the most common collocation is trapezoidal industrial roof sheet and antique glazed decorative tile.
Compared with purchasing two single-layer roll forming machines separately, this integrated double-layer model greatly reduces equipment cost and occupies less factory space, which is the ideal production machine for small and medium metal panel processing factories with mixed roof tile orders. It can process 0.3–0.8mm color coated steel coils and hot-dip galvanized strips, realizing automatic uncoiling, continuous multi-pass roll forming and fixed-length hydraulic cutting for both two profiles.

The whole machine frame adopts heavy thickened channel steel integral welding structure, and undergoes high-temperature stress relief annealing after welding to eliminate internal welding stress. The rigid frame ensures stable and vibration-free long-time high-speed forming whether running upper layer or lower layer, maintaining consistent forming precision for every finished roof panel.
Two groups of independent forming roller stations are arranged vertically up and down inside the frame. All forming rollers are precision turned solid 45# carbon steel with multi-layer surface quenched hard chrome plating, featuring high hardness, wear resistance and rust-proof performance, scratch-free forming for soft aluminum alloy and thin color steel sheets. Each roller group adopts progressive bending design to complete complex standing rib and interlocking edge bending in one feeding stroke, with tiny forming spring-back to guarantee neat sheet edges and tight interlock effect. We support custom matching of two different roof tile profiles according to customers’ local market hot-selling styles.

A shared heavy-duty bilateral mechanical deviation correction device is installed at the public feeding inlet to guide steel strips to run along the central track and avoid offset raw material waste.
Two independent vertical hydraulic cutting units are configured at the tail for upper and lower layers, each equipped with thickened special wear-resistant alloy cutting blades suitable for thin & medium gauge color steel sheets. The cut ends are flat without burr, collapse or deformation, and the tolerance of finished roof panel fixed length is controlled within ±1mm. Two small independent hydraulic stations provide stable cutting pressure without oil leakage during long-term circulating work.

One integrated large touch screen PLC control cabinet centrally manages the double-layer machine, pre-storing multiple groups of two different roof tile parameter recipes. Users can one-click switch between single-layer operation mode and two-profile production specifications without repeated parameter resetting. The control system realizes automatic length counting, fixed-length shutdown, real-time speed display and fault self-diagnosis functions. Only one ordinary operator can complete full machine production monitoring work, greatly lowering labor operation threshold and labor cost. Overload protection and emergency stop switch are equipped to reduce production safety risks.

This double-layer roll forming machine can be perfectly matched with hydraulic coil reel uncoiler to form a fully automatic continuous feeding production line. We support customizing two matching tile profiles, rib height, effective covering width and raw material thickness range according to customer’s local construction standards.
Each double-layer integrated roll former will undergo a 72-hour non-stop full-load coil endurance test before delivery. Our engineers repeatedly calibrate forming wave radian, interlocking tightness and cutting length tolerance of both upper and lower layers to eliminate all hidden quality troubles before shipment. Complete spare forming rollers, cutting blades, hydraulic sealing parts and bilingual English-Chinese operation & maintenance manuals are provided as standard free accessories.

Parameter Item	Specification
Full Model Name	Double-layer Roll Forming Machine / 2 In One Dual Profile Trapezoidal & Glazed Roof Tile Cold Forming Equipment
Category	Roof Panel Roll Forming Machine > Double-layer roll forming machine
Processable Raw Material	Color coated steel coil, hot-dip galvanized steel strip
Applicable Sheet Thickness	0.3–0.8mm customizable
Integrated Forming Profiles	Two different roof tile profiles customizable (trapezoidal + glazed tile mainstream)
Forming Roller Material	Precision turned 45# carbon steel + full quenched hard chrome plating wear-resistant anti-rust treatment
Number of Forming Roller Stands	18–24 stations for each independent layer
Drive Mode	Two sets independent variable frequency synchronous chain transmission
Forming Running Speed	7–22 m/min stepless adjustable for each layer
Total Installed Motor Power	Customized based on two matched tile profiles
Cutting System	Two independent vertical hydraulic fixed-length cutting units
Finished Length Dimensional Tolerance	≤±1mm
Control System	Centralized PLC touch screen full-automatic numerical control, dual-profile recipes stored for one-click mode switch
Overall External Dimension	Customized according to two matched tile sizes
Total Machine Weight	Customized based on double-layer roller configuration
Official Warranty Period	2 years full machine all-round comprehensive warranty
Production Delivery Lead Time	50–60 days