This equipment is a 1650mm Slitting Line, manufactured by Wuxi Puxin. It is a high-performance metal processing machine designed for slitting and splitting metal coils into narrower strips. This type of equipment is essential in industries such as automotive manufacturing, home appliance production, construction material fabrication, electrical equipment manufacturing, and hardware processing. The unit is built with heavy-duty construction to ensure long-term reliability, high precision, and continuous operation under demanding production conditions.
| No. | Item | Specification | Remarks |
|---|---|---|---|
| 1 | Manufacturer | Wuxi Puxin | Well-known Chinese slitting line manufacturer |
| 2 | Uncoiler Motor | 22 kW | Provides stable unwinding power |
| 3 | Tension Unit Motor | 15 kW | Ensures consistent tension control |
| 4 | Slitting Unit Motor | 75 kW | Core cutting power unit |
| 5 | Recoiler Motor | 110 kW | High-power rewinding drive |
| 6 | Slitting Shaft Diameter | Ø220 mm | Large diameter for enhanced rigidity |
| 7 | Total Installed Power | 222 kW | Combined motor power |
The slitting line consists of four major units, each playing a critical role in the overall slitting process. Below is a detailed description of each component.
The uncoiler is the starting point of the slitting line. Its primary function is to hold the master coil and unwind it in a controlled manner for feeding into the slitting section.
Motor Power: 22 kW
Function: Supports and rotates the master coil to deliver material steadily into the tension and slitting sections.
Design Features: Built with a heavy-duty mandrel and braking system to handle large coils with high inertia. The motor provides both unwinding torque and back tension control.
Operational Benefits: Ensures smooth material pay-off, reduces vibration, and prevents coil telescoping. Suitable for coils of various widths and weights.
The tension unit is positioned between the uncoiler and the slitting unit. Its role is to maintain consistent tension on the strip as it enters the slitting station, which is critical for achieving precise cut widths and preventing material distortion.
Motor Power: 15 kW
Function: Applies controlled tension to the strip, eliminating slack and ensuring uniform feeding into the slitter.
Design Features: Typically consists of pinch rolls or bridle rolls driven by the motor, with tension feedback control.
Operational Benefits: Prevents lateral movement of the strip during slitting, reduces edge burr formation, and improves overall cut quality. Stable tension also contributes to safer operation and longer blade life.
The slitting unit is the core of the entire production line. It houses the slitting shaft and circular blades that perform the actual cutting of the metal strip into multiple narrower strips.
Motor Power: 75 kW
Slitting Shaft Diameter: Ø220 mm
Function: Drives the slitting shaft at high torque to rotate the circular blade sets for precision cutting.
Design Features: The large-diameter shaft (Ø220 mm) provides exceptional rigidity, minimizing deflection during high-load cutting. The unit can accommodate multiple blade spacers and knife sets, allowing for flexible slitting configurations. Blade clearance can be adjusted to suit different material thicknesses and types.
Operational Benefits: Achieves tight width tolerances, clean cut edges, and consistent strip quality. Suitable for slitting a wide range of materials, including mild steel, stainless steel, galvanized steel, and silicon steel. The high-power motor ensures sufficient torque for cutting thicker and harder materials.
The recoiler is the final unit in the slitting line. It rewinds the slit strips into individual coils, ready for downstream processing or packaging.
Motor Power: 110 kW
Function: Rewinds multiple strips simultaneously, maintaining proper tension to avoid telescoping, scratching, or loose winding.
Design Features: Equipped with a high-power motor to handle the combined tension required for rewinding multiple narrow strips. The recoiler shaft is designed to accommodate separable coil segments, often with expandable mandrels for easy coil removal.
Operational Benefits: Produces tightly wound, well-aligned finished coils. The high torque capability allows for efficient rewinding even with high-strength materials. Ensures that the final product meets quality standards for storage and further processing.
The following table summarizes the key features that distinguish this slitting line.
| Feature | Detailed Description |
|---|---|
| High Precision Slitting | The slitting unit is built around a Ø220 mm slitting shaft, which provides superior rigidity and minimizes deflection during cutting. This ensures consistent strip width accuracy, typically within tight tolerances required for automotive and appliance applications. |
| Independent Drive System | Each major unit—uncoiler, tension unit, slitting unit, and recoiler—is powered by its own motor. This independent drive configuration allows for precise speed and torque control at each stage of the process, resulting in better synchronization and reduced material stress. |
| High Total Power Capacity | With a combined installed motor power of 222 kW, the line is capable of handling high-strength materials, thick gauges, and heavy coils. The high-power slitting and recoiling motors ensure uninterrupted production even under maximum load conditions. |
| Stable Tension Control | The dedicated tension unit, combined with the motor control systems, maintains uniform strip tension from uncoiling to recoiling. This stability is essential for preventing edge wave, strip breakage, and uneven winding. |
| Robust Structural Design | The entire line is constructed with heavy-duty steel frames and components, ensuring long-term durability and resistance to vibration. This robust design allows the equipment to operate reliably in high-volume industrial environments. |
| Flexible Slitting Capability | The slitting unit can be configured with various blade sets and spacers to accommodate a wide range of strip widths and thicknesses. This flexibility makes the line suitable for job shops and manufacturers who process diverse material specifications. |
| Suitable for Difficult Materials | Thanks to the large-diameter slitting shaft, high motor power, and rigid construction, the line is well-suited for slitting hard-to-process materials such as stainless steel, high-strength low-alloy (HSLA) steel, and silicon steel. |
This slitting line is designed to process a broad range of metal coils for various industrial sectors. Below are the typical materials and applications.
Cold-rolled steel coils
Hot-rolled steel coils
Stainless steel coils
Galvanized steel coils
Silicon steel coils
High-strength low-alloy (HSLA) steel
Pre-painted steel coils
| Industry | Application Examples |
|---|---|
| Automotive | Slitting of steel strips for body panels, chassis components, and structural parts |
| Home Appliances | Strips for washing machine drums, refrigerator panels, air conditioner housings |
| Construction | Metal strips for roofing, wall cladding, steel framing, and ductwork |
| Electrical | Silicon steel strips for transformer cores and electric motor laminations |
| Hardware | Slit coils for fasteners, brackets, shelving, and general metal fabrication |
This equipment is a used slitting line, originally manufactured by Wuxi Puxin, a reputable Chinese machinery builder known for producing durable and reliable metal processing equipment.
Condition: The machine retains its original technical structure and is suitable for continued industrial use.
Target Users: Ideal for metal service centers, steel processors, and manufacturers seeking a cost-effective slitting solution without compromising on performance.
Advantages of Used Equipment: Provides significant capital savings compared to new machinery, while still delivering the precision and productivity required for most slitting applications.
The equipment is designed with maintainability in mind. Key components such as the slitting shaft, blade arbors, and drive motors are accessible for routine inspection and servicing. Regular maintenance ensures consistent performance and extends the operational life of the line.
The slitting line can be integrated into existing production environments with standard power and control interfaces. It is suitable for operation as a standalone unit or as part of a larger metal processing facility.
Industrial safety features typical of modern slitting lines are incorporated, including emergency stops, protective guards, and tension monitoring systems to ensure operator safety during production.
