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.

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

The coil is longitudinally slit into various widths. By adjusting the combination of modular spacers, the width of the finished product can be easily modified. 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 convenient 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.

Feeding Cart: The material-infeed cart is equipped with adjustable lifting and horizontal movement capabilities, facilitating the insertion of steel coil inner holes into the unwinding machine’s expanding and contracting cylinder. Lifting is driven by a hydraulic system, while horizontal movement is powered by a reduction motor. The cart features a four-column lifting guide mechanism, 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 rails are made of steel pipes coated with hard chrome plating. The cart’s surface in contact with the steel coil includes thick rubber pads embedded on the inclined surfaces.

Feeding Device: The feeding device introduces the sheet material into the feed puller and consists of a swinging guide plate and a telescopic scraper plate. It is mounted on the frame of the straightening puller. The guide plate and scraper plate are swung and extended/retracted respectively by hydraulic cylinders. Clamping and Positioning: This component is used for lateral positioning of the steel sheet to prevent deviation. 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 single-arm support hydraulic expanding and contracting claw mechanism: After the coil transport vehicle is positioned, the expanding and contracting claws enter the inner bore of the steel coil to tighten it. The unwinding machine then descends to apply pressure and manually unrolls 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 special steel with surface quenching and grinding treatment. Internal sliding blocks and other components are made of cast steel. The hydraulic cylinders provide a maximum expansion and contraction stroke of 50 mm. An emergency brake is incorporated for both emergency stop and counter-tension control; this brake is also used 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.

The membrane applicator is a double-sided laminating machine. It features two laminating rollers that are pneumatically expandable and can be moved left and right. The rollers are driven by a 0.4 kW gear motor and equipped with a braking tension control system. The upper roller is coated with polyurethane, while the lower roller is chrome-plated. Both rollers feature synchronized pneumatic lifting mechanisms, and cutting blades are installed on both sides. The unwinding roller has a reverse spiral design in both directions, and its surface is coated with hard chrome. 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 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 both 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 operation, allowing users to set and modify production process parameters, switch between different operating modes, and monitor the operational status, thereby ensuring safe and efficient operation of the production line.