Trapezoidal Roof Roll Forming Machine

1.Product Overview

Trapezoidal Roof Roll Forming Machine is an automatic cold roll forming production line specially developed for continuous manufacturing of trapezoidal metal roof panels and wall cladding sheets.By cold bending flat metal coils through multi-group precision rollers without heating,it shapes standard trapezoidal rib profiles with outstanding structural stiffness and excellent rain drainage performance,widely recognized as mainstream roofing equipment in global construction material industry.

The whole line finishes uncoiling,feeding,gradual forming,fixed-length hydraulic cutting and finished panel output in one automatic flow,realizing unmanned continuous batch production of roofing sheets.Popular finished profiles cover IBR,T18,T25,T35,840,900,1050 effective width trapezoidal sheets to fit European,African,Southeast Asian and domestic building standards.

2.Working Principle

Raw metal coil is loaded on manual/hydraulic decoiler first;strip is fed into forming host after straightening and guiding,then sequentially passes 16–22 sets of precision roller stations.Rollers progressively bend the flat plate step by step to form standard trapezoidal ribs,avoiding material tension crack or surface scratch caused by one-time sharp bending.After forming,PLC system reads preset cutting length via encoder and triggers hydraulic shear for fixed-length blanking;finished roof panels slide onto run-out table or automatic stacking rack for collection.

3.Core Configuration&Key Technical Parameters

Basic Technical Specs

Processable Raw Material:PPGI/Color steel,GI/Galvanized steel,PPGL/Aluzinc,Aluminum coil

Applicable Material Thickness:0.3mm–0.8mm

Incoming Coil Width:1000mm/1250mm(customizable)

Effective Finished Panel Width:828/840/900/1050mm per profile design

Forming Speed:10–15 m/min,max up to 25m/min for high-speed flying-cut model

Forming Roller Stations:18–22 groups solid shaft rollers

Main Driving Power:5.5–7.5kW main motor;3–4kW hydraulic station motor

Length Cutting Precision:±1.5mm per finished sheet

Total Machine Weight:4.2–6.5T;Overall dimension:~9.5m×1.5m×1.6m

Main Component Advantages

Main Frame:300–400#H-beam integrated welded structure,high rigidity,low vibration,stable long-hour continuous operation

Forming Rollers&Shaft:45#forged steel/GCr15 material,overall hard chrome plating+high-temperature quenching(HRC58–62),wear-resistant,long service life,no scratch on sheet surface;solid roller shaftΦ70–75mm for stable transmission

Hydraulic Cutting Unit:Cr12MoV alloy quenched cutting blade,burr-free clean cutting,durable against frequent shearing;optional flying shear for non-stop high-speed production

Control System:Siemens/Mitsubishi customized PLC+touch screen HMI with multi-language option;one-click set of production length,quantity and speed,automatic fault alarming

Decoiler:5T standard manual decoiler,hydraulic uncoiler as optional upgrade;matching automatic sheet stacker for finished collection

4.Outstanding Product Features

High Forming Precision:Gradual cold forming technology ensures neat rib lines,consistent profile size,low material waste rate below 1%

Strong Operational Stability:Heavy-duty welded frame+chain/gear double drive,supports 24h non-stop industrial continuous production

Wide Material Compatibility:Adapt to multiple coated metal and aluminum sheets,adjustable roller for customized rib height and panel width per client’s drawing

Cost-saving Automation:Minimal manual intervention,greatly cut labor cost;low failure rate reduces later maintenance expense

Customizable Design:Profile size,machine color,automatic stacking,flying cutting function all support personalized modification according to regional market demand.