1. Equipment Definition
The Dual Head Decoiler is a continuous coil feeding system** featuring **two independent stations** that alternate to achieve **zero-stop automatic coil switching (metal, plastic, paper, etc.). Designed for high-speed continuous production lines, it eliminates efficiency losses caused by downtime during coil changes in traditional single-head decoilers.
2. Core Working Principle
Operational Workflow
[Station A uncoiling] → [Pre-depletion alert] → [Station B activation] → [Splicing/welding] → [Station B takeover] → [Station A reload]
Key Technologies:
1. Synchronous Switching Control:
PLC monitors coil diameter, triggering standby station acceleration 10-15s in advance
Hydraulic/pneumatic rollers splice materials (>2mm) or laser welding (thin stock)
2. Closed-Loop Tension Control:
Servo motor + encoder maintains tension fluctuation ≤±3%
3. Auto-Centering System:
CCD vision/photoelectric sensor correction (±0.5mm)
3. Core Components
| Module | Function |
|---------------------|-----------------------------------------------------------------------------|
| Dual Decoiling Heads | Independently driven mandrels (hydraulic expansion/mechanical wedge), capacity: 5-30 tons |
| Threading Guide Arm | Material guidance with damping rollers for tension shock absorption |
| Splicing/Welding Unit | High-speed tail cutting & lead welding (plasma/TIG optional) |
| PLC Control Cabinet | HMI touchscreen, 200+ material presets, OPC UA/MES integration |
| Base Rail System | Heavy-duty linear guides enabling rapid station changeover (≤90s) |
4. Technical Advantages vs. Single Head Decoiler
| Metric | Dual Head Decoiler | Single Head Decoiler |
|---------------------|----------------------------|---------------------------|
| Changeover Time | 0-15s | 15-30 mins |
| Daily Uptime | 23.5+ hours | ≤20 hours |
| Material Waste | ≤0.3% | 1.5-3% |
| Labor Requirement | Unmanned | 2 operators |
| Max. Line Speed | ≥120m/min | ≤60m/min |
5. Key Applications
1. Metal Processing
High-speed roll forming lines (auto beams/IBR roofing)
Pickling lines (20-ton carbon steel coils)
2. New Energy Materials
PV backsheet lamination (Alu + PET film)
Battery electrode foil production (±0.05mm tension control)
3.Packaging & Printing
Flexographic printing (seamless 8-color changeover)
Corrugated board lines (paper splicing)
Audited Supplier 
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