Hydraulic Decoiler Introduction
A hydraulic decoiler is a critical piece of equipment widely used in the metal sheet processing industry. It is designed to smoothly and efficiently uncoil metal coils (e.g., steel, aluminum) to supply raw materials for downstream processes like leveling, cutting, or stamping. Below is a detailed overview:
I. Structure and Components
1. Frame
The main support structure, typically welded from high-strength steel, ensures stability and impact resistance.
2. Hydraulic Motor/Cylinder
The core power source, driven by a hydraulic system, controls rotation or expansion/contraction of the decoiler, delivering stable torque and speed.
3. Clamping Device
Secures the coil's leading edge to prevent material slippage or misalignment during uncoiling.
4. Expandable Mandrel
Hydraulically adjusts the mandrel's diameter to fit coils with varying inner diameters (common range: Ø400-Ø600 mm).
5. Guiding System
Includes guide rollers or centering devices to maintain linear material feed and minimize deviation.
6. Control System
Operated via PLC or manual controls, it regulates uncoiling speed, tension, and includes overload protection.
II. Working Principle
1. Hydraulic Drive
A hydraulic pump powers the motor to rotate the mandrel, while expanding/contracting it to grip the coil's inner wall.
2. Coil Fixation
After loading, the mandrel expands to tightly fit the coil's inner diameter, ensuring stable force transmission.
3. Uncoiling Process
The coil rotates and unwinds, feeding material into downstream equipment (e.g., levelers or shears). Hydraulic systems dynamically adjust tension to prevent deformation or breakage.
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