Slitting and winding line

Uncoiling Section

It includes an uncoiler, an uncoiling tension device, etc. The uncoiler is responsible for unwinding the metal coil, while the uncoiling tension device controls the tension of the coil during the uncoiling process to ensure that the coil is unwound smoothly.

Slitting Section

The core component is the circular shear. It longitudinally shears the coil through multiple sets of circular blades, cutting the wide coil into narrow strips with the required widths. It also includes guide and guard devices, clamping devices, etc., which are used to guide the coil and fix its position to ensure the cutting precision.

Winding Section

It consists of a winder, a constant tension winding device, etc. The winder rewinds the narrow strips of the coil after slitting into rolls. The constant tension winding device can make the coil subject to uniform and stable tension during the winding process, avoiding situations such as looseness and wrinkling of the coil.

Auxiliary Devices

For example, the loop accumulator can store a certain amount of coil during the shearing process, playing a role in buffering and adjusting the tension. The scrap chopper is used to chop the waste edges generated during longitudinal shearing for convenient recycling. Besides, there are also liner paper devices, scrap carts, discharge trolleys, and so on.

Workflow

• Loading: The metal coil is transported to the uncoiler by the loading trolley.

• Uncoiling: The uncoiler unwinds the coil, and at the same time, the uncoiling tension device controls the tension to ensure the smooth conveyance of the coil.

• Feeding and Positioning: The feeding device guides the head of the coil into the slitting machine and positions it to ensure the accuracy of the cutting position.

• Slitting: The circular shear longitudinally shears the coil, cutting it into narrow strips with the required widths.

• Scrap Handling: The scrap winding machine collects the waste edges generated during slitting, and then the scrap chopper chops them up and they are transported away by the scrap cart.

• Tension Control: The tension mechanism applies appropriate tension to the narrow strips of the coil after slitting, so that they remain flat and compact during the winding process.

• Winding: The winder rewinds the narrow strips of the coil that have undergone tension control into rolls, completing the winding work.

• Unloading: The unloading trolley unloads the wound coil and transports it to the designated position.

Technical Parameters

• Processable Materials: It is applicable to various metal coils such as tinplate, galvanized iron, silicon steel sheet, cold-rolled strip steel, stainless steel strip, aluminum strip, steel strip, etc.

• Processing Thickness and Width: For thin plate slitting lines, the processing thickness is generally between 0.1 - 3.0mm, and for thick plate slitting lines, the processing thickness is between 3.0 - 6.0mm. The width of the plate usually ranges from several hundred millimeters to one or two thousand millimeters. For example, the width range of the 650mm slitting line is from 80mm to 650mm.

• Number of Slitting Strips and Speed: The number of slitting strips depends on the equipment model and processing requirements, generally ranging from several to dozens. The slitting speed is usually between dozens of meters per minute to hundreds of meters per minute, and advanced equipment can reach 100 - 200 meters per minute.

• Cutting Precision: The precision is relatively high, generally reaching ±0.05mm or even higher. For example, the width tolerance of the 650mm slitting line can reach 0.02mm.

Application Fields

It is mainly applicable to industries such as transformers, motors, home appliances, automobiles, building materials, packaging, etc., providing high-precision and high-quality metal narrow strip coils for these industries.