Metal sheet slitting production line

The metal sheet slitting production line is an automated production line that continuously cuts wide metal coils into several narrow strips of the required width according to process requirements, and rewinds them into finished products.

A standard split production line mainly consists of the following parts:

1. Feeding and unwinding section

Hydraulic feeding trolley: smoothly and securely deliver heavy steel coils to the unwinding machine shaft.

Uncoiler: carries steel coils and controls their unfolding. Types include cantilever, double head, etc., usually with expansion and contraction functions to fix steel coils.

Peeling device (optional): Automatically lifts the head of the coil for easy feeding.

2. Leveling and Head Tail Processing

Feeding platform and pinch roller: guide the plate head into the subsequent process.

Leveling machine: one of the core equipment. Composed of multiple staggered leveling rollers, it is used to eliminate plate shape defects such as sickle bending, wavy edges, and scoop bending in the coil material, and to confirm that the sheet material entering the slitting machine is appropriately straight. This is the key to protecting the quality of the segmentation.

Hydraulic shear or cutting head shear: used to cut off irregular parts of the board head and tail, facilitating threading and welding.

Head to tail docking machine (suitable for continuous production lines): Welding the tail of the previous roll and the head of the subsequent roll together to achieve uninterrupted continuous production, greatly improving efficiency.

3. Vertically cut and divided sections

Slitting machine (slitting machine): the core of the entire line.

Structure: It mainly consists of two blade shafts, upper and lower.

Disc cutters: Paired (upper and lower blades) are installed on the blade shaft. The upper blade is circular, while the lower blade is usually disc-shaped, forming an overlap and lateral gap to achieve high-quality shearing.

Knife adjustment mechanism: The meticulous slitting machine is equipped with a servo motor-driven knife adjustment mechanism, which can directly input the width of the strip on the control screen. The automatic speed is suitable for positioning the blade position, and the accuracy is high.

4. Separation and tension control section

Sorting rack (spacer rack): used to separate adjacent narrow strip materials after cutting, to prevent mutual friction and scratching.

Tension station: provides stable post tension for winding, making the winding compact and neat. Common forms include belt tension, roller tension, etc.

5. Roll up section

Winder: rewinding the narrow strip after slitting into a roll. There are mainly two forms:

Surface winding machine: It drives the material to be wound by driving the friction roller (drum). Simple structure, suitable for thinner materials with low tension requirements.

Central winding machine: directly drives the winding core shaft for winding, which can accurately control the tension. This is the standard configuration for excellent slitting lines, which can accept thicker and heavier rolls, and the quality of the rolls is better.

Unloading device: After the winding is completed, the finished roll is unloaded from the winding machine and removed from the production line, usually including hydraulic unloading carts, trays, etc.

6. Electronic Control System

Automated brain: centered around PLC and human-machine interface (touch screen).

Function: Control the speed coordination of the entire line, tension control, fixed length parking, automatic cutting calculation, fault diagnosis and alarm, etc.