This industrial roll forming line converts flat metal coil into accurate trapezoidal roofing and wall-cladding panels through a continuous cold-forming process. It is suitable for manufacturers supplying steel-structure buildings, warehouses, workshops, agricultural facilities, commercial projects, modular buildings and prefabricated construction.
The machine shown features a heavy welded steel base, closely supported forming stands, an independent hydraulic power unit, a profile-matched cutting assembly and an elevated touchscreen control console. The progressive forming sequence helps control material stress, preserve coated surfaces and maintain consistent rib geometry, effective width and finished length.
Automatic operation from guided coil feeding to fixed-length cutting
PLC and touchscreen control for length, quantity and batch settings
Encoder-based measurement for repeatable finished-panel dimensions
Rigid frame and precision forming stations for stable continuous production
Hydraulic profile cutting for clean, accurate panel ends
Custom roller tooling for different trapezoidal roofing profiles
Suitable for common coated steel and lightweight metal coils
Expandable with decoiling, leveling, punching, stacking and packaging systems
Specification note: The following values are typical industry references. Final specifications are confirmed according to the approved profile drawing, material grade, thickness range, required speed and local electrical standard.
| Attribute | Typical Specification / Description |
|---|---|
| 1. Product name | Precision PLC trapezoidal roof and wall panel roll forming machine |
| 2. Machine category | Automatic cold roll forming production line |
| 3. Main function | Producing trapezoidal roofing and wall-cladding panels |
| 4. Finished profile | Ribbed trapezoidal metal sheet |
| 5. Forming process | Continuous multi-pass cold roll forming |
| 6. Suitable materials | GI, GL, PPGI, PPGL and aluminum coil |
| 7. Typical thickness range | Approximately 0.30-0.80 mm; customized ranges available |
| 8. Material strength | Machine engineered according to specified yield and tensile strength |
| 9. Input coil width | Customized according to the finished panel profile |
| 10. Effective cover width | Produced according to the approved panel drawing |
| 11. Rib height | Customized for panel stiffness, drainage and appearance |
| 12. Rib pitch | Customized according to selected trapezoidal geometry |
| 13. Side-lap edge | Designed for overlap, alignment and weather resistance |
| 14. Standard forming speed | Typically 10-25 m/min, depending on profile and cutting system |
| 15. High-speed option | Available with upgraded drive and servo tracking cut |
| 16. Forming stations | Usually 12-20 stations, determined by profile complexity |
| 17. Roller material | Precision-machined 45# steel or optional alloy steel |
| 18. Roller surface treatment | Hard chrome plating, polishing and anti-corrosion protection |
| 19. Roller machining | CNC machined to the approved forming flower |
| 20. Main shaft material | Heat-treated high-strength steel |
| 21. Typical shaft diameter | Approximately 70-95 mm, selected according to forming load |
| 22. Bearing arrangement | Industrial bearing blocks for continuous-duty support |
| 23. Main frame | Heavy-duty welded steel base |
| 24. Frame processing | Stress-relieved, machined and aligned before assembly |
| 25. Forming-stand structure | Steel plate or cast-iron arch configuration |
| 26. Transmission type | Chain, gear or gearbox drive according to torque requirement |
| 27. Main motor power | Typically 5.5-11 kW, matched to material and speed |
| 28. Hydraulic motor power | Typically 4-7.5 kW |
| 29. Hydraulic station | Oil tank, motor, pump, valve block, pressure gauge, filter and cooling option |
| 30. Control system | PLC automatic control |
| 31. Operator interface | Touchscreen HMI with production-data display |
| 32. Speed control | Variable-frequency inverter regulation |
| 33. Length measurement | Electronic encoder measuring system |
| 34. Length programming | Finished length entered through the HMI |
| 35. Batch control | Automatic quantity setting, counting and batch stop |
| 36. Operating modes | Automatic, manual and jog modes |
| 37. Cutting method | Hydraulic post-cut, pre-cut or optional tracking cut |
| 38. Cutting blade material | Cr12, Cr12MoV or equivalent hardened tool steel |
| 39. Typical length accuracy | Approximately +/-1.5 mm under normal operating conditions |
| 40. Blade profile | Matched to the finished trapezoidal sheet shape |
| 41. Cutting clearance | Adjusted according to material grade and thickness |
| 42. Feeding guide | Adjustable side guides for accurate strip centering |
| 43. Entry leveling | Optional multi-roll leveling unit |
| 44. Decoiler type | Manual, hydraulic or automatic loading decoiler |
| 45. Typical decoiler capacity | 3-5 tons; heavier capacities available |
| 46. Coil inner diameter | Typically 450-550 mm or customized |
| 47. Coil outer diameter | Selected according to coil weight and factory layout |
| 48. Coil loading method | Crane-assisted, hydraulic expansion or coil-car loading |
| 49. Output support | Run-out tables or roller conveyor |
| 50. Stacking option | Manual, pneumatic, servo or vacuum stacking system |
| 51. Punching option | Optional pre-punching or inline hydraulic punching |
| 52. Marking option | Optional inkjet, laser or embossing identification |
| 53. Electrical voltage | 220 V, 380 V, 400 V, 415 V, 440 V or local standard |
| 54. Frequency | 50 Hz or 60 Hz |
| 55. Electrical phase | Three-phase industrial power supply |
| 56. Electrical components | International or customer-specified brands available |
| 57. Emergency protection | Emergency-stop buttons and motor overload protection |
| 58. Safety guarding | Protective covers and warning labels around moving sections |
| 59. Lubrication | Accessible lubrication points with optional centralized system |
| 60. Surface finish | Industrial primer and durable machine topcoat |
| 61. Machine color | TOPPO standard color or buyer-selected color |
| 62. Production direction | Left-to-right or right-to-left arrangement |
| 63. Machine footprint | Determined by forming stations and auxiliary equipment |
| 64. Machine weight | Determined by frame design and final configuration |
| 65. Profile customization | Designed from customer drawing, sample or required cover width |
| 66. Profile-change option | Spacer, cassette, quick-change or double-layer solution |
| 67. Material utilization | Continuous forming helps reduce scrap and improve coil yield |
| 68. Surface protection | Progressive forming helps minimize scratches on coated sheet |
| 69. Noise and vibration control | Rigid frame and aligned transmission improve operating stability |
| 70. Quality inspection | Assembly inspection, no-load test and sample-panel trial |
| 71. Documentation | Operation manual, electrical diagram, foundation drawing and maintenance guide |
| 72. Standard accessories | Control cabinet, hydraulic station, tool kit and receiving tables as contracted |
| 73. Spare parts | Recommended wearing parts supplied according to order scope |
| 74. Installation support | Remote guidance or optional on-site commissioning |
| 75. Operator training | Operation, adjustment, maintenance and safety instruction |
| 76. Packaging | Export-standard protective packing for sea or land transport |
| 77. Custom manufacturing | OEM and ODM configurations supported |
| 78. Production data management | Optional recipe storage, alarm records and production reports |
Coil loading: The raw-material coil is loaded onto the decoiler and aligned with the production line.
Guided feeding: Adjustable entry guides center the strip before the first forming station.
Progressive roll forming: Multiple roller stations gradually create the trapezoidal ribs without abrupt deformation.
Electronic measurement: The encoder measures sheet travel and transmits real-time data to the PLC.
Hydraulic cutting: The profile-matched cutter operates when the programmed length is reached.
Panel receiving: Finished sheets move to run-out tables or an optional automatic stacking system.
The produced panels are widely used for industrial workshop roofs, warehouse cladding, logistics centers, agricultural sheds, commercial buildings, garages, carports, prefabricated houses, modular buildings, temporary facilities and general steel-structure construction.
Manual decoiler, roll former, hydraulic cutter and receiving tables
Hydraulic decoiler with coil car and entry leveling unit
High-speed line with servo tracking or flying-cut technology
Inline punching, marking and production-data recording
Double-layer machine for two roof profiles on one frame
Automatic stacking, counting, strapping and packaging system
Please provide the finished-panel drawing, raw-material type, material grade, thickness range, input coil width, effective cover width, rib height, rib pitch, required line speed, preferred cutting method, local voltage and desired auxiliary equipment. These details allow the roller tooling, shaft load, motor power and control strategy to be matched to the actual production requirement.
Before shipment, the complete line is assembled, aligned and test-run. The forming sequence, shaft alignment, transmission operation, hydraulic pressure, cutting action, encoder measurement, PLC program and finished sample dimensions are checked against the approved technical specification.
Clean forming rollers 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 changing material thickness or grade.
Keep the electrical cabinet clean, dry and properly ventilated.
Inspect fasteners, transmission alignment and safety devices periodically.
TOPPO provides remote installation guidance, commissioning assistance, operator training, maintenance recommendations and spare-parts support. Optional on-site engineering service can be arranged according to the destination and contract terms.



