1. Uncoiler
Function
Uncoilers unwind coiled materials (such as metal sheets, paper, films, etc.) and feed them steadily into subsequent processing equipment (e.g., stamping machines, slitters, coating machines).
Main Types
Double-head Uncoiler: Two mandrels alternate for continuous operation without downtime, suitable for high-speed production.
Single-head Uncoiler: Simple structure, ideal for small to medium-scale production.
Hydraulic Uncoiler: Uses a hydraulic system to control tension, suitable for heavy materials (e.g., thick steel plates).
Cantilever Uncoiler: Material is loaded from one side, offering easy operation, often used for narrow-width materials.
Key Components
Mandrel: Holds the material coil and can expand or contract to fit different inner diameters.
Hold-down Arm: Prevents material from loosening.
Straightening Unit (optional)**: Flattens the material initially.
Tension Control System**: Maintains stable tension during unwinding.
Applications
Metal sheet processing (e.g., automotive and appliance manufacturing).
Unwinding rolls in papermaking and packaging industries.
2. Rewinder
Function
Rewinds processed materials (such as slit films, coated metal strips, etc.) into new rolls for transportation or further processing.
Main Types
Center Rewinder: Winds material directly via a driven mandrel, ensuring precise tension control.
Surface Rewinder: Uses a friction roller to drive winding, preventing surface damage.
Dual-station Rewinder: Two positions alternate for higher efficiency.
Tower Rewinder: Multi-layer winding, suitable for ultra-thin materials (e.g., lithium battery separators).
Key Components
Rewinding Shaft: Adjustable diameter to accommodate different roll sizes.
Tension Sensor: Dynamically adjusts winding tightness.
Edge Alignment System**: Ensures neat edges.
Cutting System (optional)**: Automatically switches rolls or slits materials.
Applications
- Rewinding and slitting plastic films and aluminum foils.
- Finished product winding in the printing industry.
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