Uncoiling Machine

An uncoiler is a specialized device for leveling metal sheets and plays a vital role in the metal processing and manufacturing industries. The following is a detailed introduction to the uncoiler:

I. Definition and Uses

An uncoiler, known as "Uncoiling Machine" in English, is mainly used to level steel plates and uneven sheets in leveling lines. It can be combined with relevant equipment to form uncoiling, leveling, and shearing production lines and other sheet product production lines. It is an essential and important device in automatic processing production lines such as welded pipe production lines, coil stamping, flattening, laser cutting, and shearing lines.

II. Working Principle

The working principle of the uncoiler is based on the expansion and contraction uncoiling method. The coil is placed vertically on the expandable and contractible mandrel. After being tightened by the mandrel, the mandrel is driven by a motor to rotate, which in turn drives the coil to uncoil. After the strip is uncoiled, it naturally hangs down. When it touches the induction frame, the uncoiling automatically stops, and when it leaves the induction frame, the uncoiling continues. The operation is very simple and fast.

III. Structure and Features

Machine body structure: The body of the uncoiler usually adopts a welded box - shaped structure, which has sufficient stiffness and stability.

Power drive: A variable - frequency speed - regulated motor drives the mandrel shaft after deceleration through a gearbox, providing the main power for the uncoiler.

Mandrel design: The mandrel of the uncoiler is a hollow shaft supported on the gearbox body by two bearings. A transmission spur gear is installed on the mandrel, and additional sector plates are used to increase the nominal diameter.

Lubrication system: The gearbox is lubricated by forced lubrication and is equipped with a closed - loop oil lubrication system and a constant - speed motor.

Induction control: Some uncoilers are equipped with an induction frame and a contact - type induction method to achieve the automatic start - stop function.

IV. Types and Classification

Uncoilers can be classified into various types according to the load - bearing capacity, power mode, and structural form, such as heavy - duty uncoilers, hydraulic uncoilers, double - head uncoilers, light - duty uncoilers, and horizontal disc uncoilers.

Heavy - duty uncoiler: It is used to place wide and thick plates. It comes in various widths and can bear coils weighing from 500 kilograms to 8 tons. It is available in both powered and unpowered models.

Hydraulic uncoiler: It is used for uncoiling or rewinding heavy coils over 2 tons. It uses an oil - pressure expansion method instead of the common hand - cranked expansion method.

Double - head uncoiler: It has two expandable and contractible mandrels, which can alternately perform uncoiling and rewinding operations to improve production efficiency.

Light - duty uncoiler: It is used for feeding and rewinding small material racks of 100 kilograms or 200 kilograms, with simple operation.

Horizontal disc uncoiler: It is a horizontal uncoiling device suitable for high - speed uncoiling of metal and non - metal thin - sheet coils with a width of 5 to 120 millimeters and a thickness of 0 to 1.0 millimeters.

V. Application Scope

Uncoilers are widely used in many industries such as household appliances, steel structures, decoration, steel, non - ferrous metals, papermaking, and printing. In the steel industry, uncoilers are mainly used for uncoiling and leveling steel plates and strips; in the papermaking and printing industries, they are responsible for uncoiling and conveying paper. In addition, uncoilers are often used in conjunction with equipment such as punch presses, laser cutters, cold - bending forming machines, and hydraulic presses to achieve automated production of coils.