Used for preparing steel coil loading, the workbench is lined with a nylon plate to prevent scratches. It can store up to two steel coils and has a load capacity of 20 tons. The hydraulic cylinder supporting the steel coil rack can move left and right.

Feeding Cart: The material-loading trolley is equipped with adjustable lifting and horizontal movement capabilities, making it easy to insert the inner bore of steel coils into the expanding and contracting cylinder of the unwinding machine. Lifting is driven by a hydraulic system, while horizontal movement is powered by a reduction motor. The trolley features a four-column guiding system for vertical movement, and its top surface is fitted with a V-shaped groove lined with PU rubber sheets, as well as a safety movable cover plate. The cart’s body is constructed from steel plates; its wheels and axles are made of special alloy steel with surface hardening treatment. The lifting tracks are made of steel pipes coated with hard chrome, and the trolley’s surface in contact with the steel coil includes thick rubber pads embedded on the inclined surfaces.

The single-arm support hydraulic expanding and contracting claw mechanism: After the coil handling vehicle is positioned, the expanding and contracting claws enter the inner bore of the steel coil to tighten it. Then, the unwinding machine descends to apply additional pressure and manually unwinds the coil. A variable-frequency motor is activated to rotate and guide the coil end into place. The unwinding machine can move laterally by ±150 mm and is equipped with a robotic arm assembly. The machine body and base are welded from steel plates; the main spindle features surface hardening and grinding using special steel. Internal sliding blocks and other components are made of cast steel. The hydraulic cylinder’s expansion and contraction range is up to 50 mm, and it is fitted with an emergency brake for immediate stop and tension control. The emergency brake is also utilized for tension control along the production line. The unwinding power is provided by a variable-frequency motor. The unwinding machine’s cantilever structure is mounted on the unwinding machine’s base. The frame is constructed from mild steel and structural steel profiles, while the rollers are welded steel tubes coated with high-performance elastomer.

Feeding Device: The feeding device introduces the sheet material into the feed puller and consists of a swinging guide plate and a telescopic scraper. It is mounted on the frame of the straightening puller. The guide plate and scraper are each driven by hydraulic cylinders for swinging and telescopic extension, respectively. Clamping and Positioning: This component is used to position the sheet in the width direction, preventing the steel plate from shifting off course. On both sides, there are vertical rollers fixed on sliding seats; the sliding seats can be manually adjusted to accommodate different sheet widths. The vertical rollers are quenched and chrome-plated. The entire system is manually controlled and comprises side guiding rollers and other components.

The coil is longitudinally slit into various widths. By adjusting the combination of modular spacers, the width of the finished product can be varied. The blade shafts are adjusted using a lower fixed shaft and an upper shaft equipped with a worm-gear mechanism for synchronous spacing adjustment. The upper and lower blade shafts are axially secured by nuts, and each shaft end is fitted with a blade protection sleeve. The machine is driven by a DC motor capable of forward and reverse rotation, and the side-opening frame allows for easy blade changes. High cutting accuracy is required: radial runout of the blade shafts must be ≤0.01 mm, axial runout ≤0.005 mm, and parallelism ≤0.02 mm/m. The machine uses pressure bars instead of rubber rings; it is constructed from steel plates and other components, and both the upper and lower blade shafts are driven in rotation.

Edge-Trim Reel Machine: This machine reels in the edge trim material after slitting, driven by a variable-frequency motor. During winding, it maintains constant torque and synchronizes with the slitter’s speed. Equipped with a tension control system, it ensures neat and orderly winding of the edge trim. The machine is fitted with an expansion-retraction mechanism for manual material unloading, and automatically arranges the trimmed material along the discharge side of the slitting machine. The waste-material reel machine is driven by an AC motor, with adjustable speed and winding torque. Its winding spool features a mechanically expandable and contractible design, ensuring tight and compact winding. Material is unloaded manually, and the waste rolls are guided into a shallow pit. A pneumatic swinging conveyor bridge facilitates the collection of the waste material.

The equipment consists of a frame, pinch rolls, a six-layer roller leveling unit, a drive box, and a working roll cleaning mechanism. The frame features an integral base to ensure installation accuracy. The pinch rolls convey the sheet metal into the leveling section and generate tension together with the unwinding machine. The six-layer roller leveling unit straightens the steel strip surface; the lower three layers are fixed, while the upper three layers are equipped with lead screws for fine adjustment of the angle and hydraulic cylinders for rapid lifting and lowering. Inside the drive box, the inlet pinch rolls and the leveling working rolls are independently controlled by two separate motors. The working roll cleaning mechanism is located at the exit end and comprises a pair of lead screws with opposite threads driven by an electric motor. It cleans the roll surfaces through lateral movement of wool felt pads.

The film-laminating and liner-paper machines—specifically, the film-laminating machine—is a double-sided laminating machine equipped with two film-application rollers that can be pneumatically expanded and moved left or right. These rollers are driven by a 0.4-kW gear motor and feature a braking tension control system. The upper roller is coated with polyurethane, while the lower roller is chrome-plated. Both rollers are synchronously raised and lowered via pneumatic actuators, and cutting blades are installed on both sides. The unwinding roller has a bi-directional reverse helix design and its surface is hard-chrome plated. The liner-paper machine is fitted with heating elements and an electrostatic generator to prevent the paper from flying up.

The feeding and speed-measuring mechanism features pneumatic lifting clamping rollers. The upper and lower rollers are made of polyurethane, and digital signals are sent to the servo motor. The fixed-length feeding rollers and their power control system also utilize pneumatic lifting clamping rollers. The feeding clamping rollers are coated with PU, and components such as gears are made from chrome-molybdenum alloy steel. The system is controlled via a human-machine interface in conjunction with a PLC, ensuring synchronized feeding. The steel strip is driven by a variable-frequency motor.

The flying shear host machine, controlled by a CNC computer, features fixed-length cutting and automatic lateral shearing of steel strips. It employs a rotary shearing mechanism with four blades, and blade clearance can be quickly adjusted on the outside of the machine body. The upper-cut drive system is powered by a servo motor, and the crankshaft is made of chrome-molybdenum alloy steel with centralized, forced lubrication. This flying shear is used in steel processing to enhance operational efficiency. Baumüller provides both the motor and drive unit, along with specialized function blocks developed specifically for applications such as flying shears.

Conveyor (the original text here provides an incomplete description of the conveyor): Type: Straight-ribbed belt conveyor

Main materials: nylon belt (circular PVC diamond-patterned belt, thickness ≥5mm), profiled steel structure, and medium-carbon steel rod for the transmission shaft. Basic capabilities: conveying speed of 5–90 meters per minute, maximum conveying weight of 45 kg. The second section of the conveyor belt is driven by pneumatic cylinders that enable it to swing up and down, allowing for faster switching between two aggregate bins and thereby improving production efficiency. The conveyor belt is equipped with anti-slip bars to prevent the steel plates from slipping.

Material Receiving Machine: Operating Function: After being sheared by the cutting machine, long steel sheets are conveyed to this machine. The machine uses a combination of pneumatic and hydraulic systems to neatly collect the sheets, which are then discharged via an output roller conveyor. The machine is equipped with a robotic arm for handling materials, a single-sided punching device, and a rear punching device. It also features an 11-kW high-pressure blower that cushions the descent of the sheets, thereby reducing damage to their surfaces.

Hydraulic System: The system consists of and is used to control the hydraulic operations throughout the entire production line. It employs centralized control and comprises one hydraulic power unit, multiple valve manifolds, and several pipelines. Major components include the oil tank, the oil pump-motor assembly, the hydraulic valve manifold, and the hydraulic pipelines.

Pneumatic System: The system consists of an air source (provided by the user), air source treatment components, solenoid valves and associated piping, and cylinders. The solenoid valves and pneumatic control components are imported products.

Electrical System: The system is equipped with a main operator console, an auxiliary unwinding console, and an auxiliary coiling console, all of which are centrally controlled along the entire production line. The main operator console features digital displays and functions for adjusting high and low speeds. The speed control system and programmable logic controller (PLC) are products of Siemens GmbH from Germany; other electrical control components are either imported or equivalent-quality joint-venture products. The system—including the main control console—utilizes a touch screen for control, enabling users to set and modify production process parameters, switch operating modes, monitor running status, and ensure safe and efficient operation of the production line.