Sigma Channel Roll Forming Machine - LOTOS 2025

Sigma Channel Roll Forming Machine

A Sigma Channel Roll Forming Machine is a specialized production line designed to manufacture high-strength sigma profiles used in steel structures, purlins, and framing systems. LOTOSFORMING provides advanced sigma channel roll forming machines with precision tooling, automatic control systems, and durable components to ensure consistent quality and efficiency. These machines are ideal for producing lightweight yet strong structural channels for warehouses, factories, solar mounting structures, and industrial buildings.

Product description

Process Flow:
Loading Cart → Hydraulic Automatic Uncoiler → Leveler → Shear & Butt Welder → Spiral Loop Accumulator → Overhead Puller → 6-Station Punching System + Servo Feeding System → Forming Mill → Servo Tracking Hydraulic Flying Shear → Intelligent Roller Conveyor → Automatic StackerLorem ipsum dolor sit amet, consectetur adipiscing elit. Ut elit tellus, luctus nec ullamcorper mattis, pulvinar dapibus leo.

Detailed Equipment Specifications

Hydraulic Uncoiler + Loading Cart

  • Pneumatic pressure arms prevent coil unraveling during rotation.
  • Side flanges on both sides prevent coil spreading.
  • Wedge-type expansion: more durable than standard hinge expansion.
  • Turntable made of 48 mm thick steel plate—resists deformation.
  • Main shaft: 40Cr alloy steel—enhanced durability.
  • Rotary hydraulic cylinder expansion ensures no rotation slippage.
  • Reinforced pneumatic brake disc—resists fracture during emergency stops.
  • Clutch: 40Cr, quenched & tempered for higher strength.
  • Reversible operation for both coiling and uncoiling.

Shear & Butt Welding Platform

  • Components: front/rear pinch rolls, guide units, movable pressure plates, hydraulic shear, welding unit.
  • High automation for easy head/tail cutting and welding.
  • Raw material: Q195–Q420 hot-rolled low-carbon steel, galvanized or Zn-Al-Mg strip.
  • Width ≤ 500 mm; Thickness: 2.0–5.0 mm.
  • Key components:
    • Pinch rolls (2 sets): φ100×500 mm, chrome-plated.
    • Guide units (2 sets): vertical rolls, base rails, slide blocks, adjusting screws.
    • Movable pressure plates: hydraulically actuated.
    • Hydraulic shear: blade size 25×500 mm.
    • Welding platform: upper/lower plates, hydraulic cylinders, 20 mm copper busbar for high welding current.
    • Welding method: MIG welding.

      Spiral Loop Accumulator

      • Components: deflector frame, feed unit, loop drum, control cabinet.
      • Deflector frame: adjustable 30°–60° angle to guide strip vertically.
      • Feed unit: 2-roll pinch, pneumatic pressure. Motor: 30 kW/4-pole VFD. Speed: 60 m/min.
      • Loop drum: 6 m diameter.
      • Horizontal drive rolls:

        Leveling & Pulling Unit

        • Overhead puller with leveling function.
        • 5-roll leveling (3 bottom, 2 top). Top rolls fixed on bearing housings, lifted/lowered by hydraulic cylinders and synchronized gears.
        • All 5 rolls driven synchronously for smooth operation.
        • Motor power: 18.5 kW.
        φ159×12 pcs, 45# steel, quenched (HRC 42–48), polished.
      • Max strip thickness: 5.0 mm; width: 500 mm.
      • Storage capacity: ~15T.
      • Drive: 11×4 kW AC VFD motors (total 44 kW), R67 gearboxes.
      • Inverter: 45 kW vector type.
      • Exit cage: barrel-shaped with 8×φ120 mm exit rolls (45# seamless tube, quenched).
      • Exit speed: ≤40 m/min (follows line speed).
      • Feeding mode: outer-in, inner-out fixed-loop.

6-Station Punching Unit + Servo Feeding System (Punching dies not included)

  • Infeed pinch rolls: 2-roll, 1.5 kW motor, pneumatic lift.
  • 7 leveling rolls (4 bottom, 3 top) before punching for flatness and precision.
  • Die frame: mortise-and-tenon structure, secured by countersunk screws. Made of 45# steel, precision-machined on CNC center.
  • Hydraulic cylinder rods connected via pinned joints to prevent loosening.
  • 30 kW servo motor + planetary gearbox drives 3 pairs of φ160 mm rolls (hard-chrome plated, ground, quenched) for strong, slip-free traction.
  • Enables continuous programmed punching across multiple stations.
  • Each station has automatic centering via lead screw with left/right threads.
  • Side guide rollers adapt to varying strip widths for high hole-position accuracy.
  • All hydraulic die frames mounted on linear rails with T-slots for locking at any position.
  • Hydraulic power unit: 55 kW ×1, recommended with air-conditioned oil cooler for stable temperature during long runs.
  • One station can drive 4 hydraulic cylinders.
  • Cooling: air-conditioned oil cooling.
  • Servo motor with flange coupling.
  • Features: 30 kW servo drive, multi segment feeding (programmable lengths), LCD touchscreen for parameter setting, auto-start linked to hydraulic system.
  • Feeding speed: up to 90 m/min.

Servo Tracking Hydraulic Flying Shear

  • Cutting method: servo tracking + vertical hydraulic die cut
  • Control: PLC
  • Cut length accuracy: ±1 mm
  • Hydraulic motor: 22 kW
  • Tracking speed: ≥40 m/min
  • Linear rails: SIDENS
  • Cut length: 1–12 m (continuously adjustable)
  • Traverse motor: 11 kW INOVANCE servo

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Sigma Channel Roll Forming Machine