Uncoiler
1. Equipment Overview
The Uncoiler is a core device in metal coil processing lines, used to unwind steel or aluminum coils and feed them into subsequent processes (e.g., leveling, cutting, stamping). It is widely applied in automotive, home appliance, and construction sheet metal industries.
2. Equipment Classification
By Automation Level
Manual Uncoiler: Requires manual coil positioning, suitable for small-scale production.
Semi-Automatic Uncoiler: Partial automation (e.g., mandrel expansion).
Fully Automatic Uncoiler: Integrated auto-loading, centering, and tension control for high-speed lines.
By Structural Design
Double-End Uncoiler: Dual-station design for alternating coil loading, improving efficiency.
Cantilever Uncoiler: Single-side mandrel support for easy coil replacement.
Double-Support Uncoiler: Bilateral mandrel support for heavy coils (e.g., thick steel plates).
By Functional Extension
Uncoiler with Leveling: Integrated preliminary flattening unit.
Hydraulic Uncoiler: Hydraulic drive for high-torque applications.
3. Core Components
Mandrel
Types: Expandable (mechanical/hydraulic) or solid.
Material: High-strength alloy steel with chrome-plated anti-wear surface.
Hold-Down Roller
Prevents material loosening and ensures stable unwinding.
Drive System
Motor: Variable-frequency or servo motor for precise speed control.
Gearbox: Matches torque requirements.
Auxiliary Devices
Automatic Centering System (CPC): Ensures aligned material feeding.
Scrap Recoiler: Collects edge trimmings.
4. Working Principle
Loading: Overhead crane or loading cart places the coil onto the mandrel.
Clamping: Mandrel expands to secure the coil’s inner diameter.
Unwinding: Motor-driven mandrel rotation + hold-down rollers unwind the material.
Feeding: Material enters a leveler, shear, or press directly.
5. Key Technical Parameters
| Parameter | Typical Range/Specification |
|---|---|
| Coil Weight | 1–50 tons (heavy-duty: 100+ tons) |
| Coil Inner Diameter (ID) | 450–610mm (standard), customizable |
| Coil Outer Diameter (OD) | 800–2500mm |
| Material Thickness | 0.3–20mm (varies by model) |
| Uncoiling Speed | 5–120 m/min (high-speed for automated lines) |
| Motor Power | 5–100kW (selected based on load) |
6. Applications
Automotive: Uncoiling steel plates for body stamping.
Home Appliances: Processing for refrigerators/washing machines.
Construction: Uncoiling color-coated or galvanized coils.
7. Selection Criteria
Material Properties: Thickness, width, and material type (stainless steel needs scratch-resistant design).
Line Speed: Must synchronize with downstream equipment.
Automation: PLC/MES integration requirements.
Safety Features: Emergency stop, protective covers, overload protection.
