The HAIWEI 2 in 1 Decoiler Straightener ULA Series is a high-precision, versatile solution designed for modern metal coil processing. With a material thickness range of 0.2–3.2 mm, the ULA series integrates decoiling and straightening functions into a single compact unit, providing both space efficiency and operational reliability. It is widely applied in automatic punching, cut-to-length, and blanking operations and is compatible with punch presses, power presses, press brakes, hydraulic presses, and shearing machines.Get more news about decoiler straightener,you can vist our website!

By combining the decoiler and straightener, the ULA series streamlines material handling, reduces manual labor, and ensures smooth and continuous feed, making it ideal for high-volume and precision-driven manufacturing environments.

Integrated Decoiler and Straightener for Maximum Efficiency

The ULA series features a thoughtfully integrated design where the decoiler and straightener are combined into one machine. This reduces the need for separate equipment, minimizes factory floor space requirements, and simplifies production line setup.

Decoiler operation: The coil is loaded onto the decoiler section, which can be non-motorized or optionally motorized. Coil centering is achieved using manual or hydraulic expansion jaws to ensure proper alignment.
Straightener operation: Once the coil is unwound, the strip enters the straightening section. The straightener is motorized, allowing consistent, smooth feeding of material to downstream machines.

This integrated design supports continuous, automated operation, making it suitable for high-speed production lines in automotive, electronics, appliance, and metal fabrication industries.

Broad Material Compatibility

HAIWEI’s ULA decoiler straightener is capable of processing a wide variety of metals and materials:
Hot-rolled (HR) steel
Cold-rolled (CR) steel
Aluminum and stainless steel
Copper and brass
Certain plastic strips

The machine is engineered to handle delicate, thin, or high-precision materials without damaging the surface, thanks to its carefully designed roll configuration and high-quality construction. This makes it suitable for applications where both flatness and surface quality are critical.

Precision Straightening Mechanism

The ULA series straightening section features 11 high-quality rolls, including 7 straightening rolls and 4 pinch rolls, ensuring precise flattening of the metal strip. The rolls are made of heat-treated alloy steel, hard-chrome plated, and precision-ground, providing durability and maintaining hardness over prolonged use.

Staggered roll design: Alternates compressive and tensile forces across the strip to remove waves and internal stress.
Individual roll gap adjustment: Hand wheels with reference indicators allow operators to fine-tune the upper and lower roll gaps to match material thickness.
Optional pneumatic press arm: Stabilizes material during processing for delicate strips.
Inverter-controlled straightener: Allows easy adjustment of feed speed to synchronize with press or shearing operations.

These features ensure high-precision straightening, consistent strip feed, and minimized material waste, even in high-volume production environments.

Step-by-Step Working Principle

The working process of the HAIWEI 2 in 1 ULA decoiler straightener can be broken down into detailed stages:

1. Coil Loading: The metal coil is placed onto the decoiler, manually or using hydraulic expansion jaws. Correct centering ensures consistent feeding.
2. Decoiling: The strip is unwound from the coil, either by gravity in the non-motorized decoiler or by motorized feed in optional configurations.
3. Initial Straightening: The strip enters the first group of straightening rolls, which remove major waves and correct surface flatness.
4. Precision Straightening: The strip then passes through the secondary rolls for fine leveling, eliminating residual internal stresses and improving dimensional accuracy.
5. Optional Stabilization: Pneumatic press arms or additional guiding mechanisms ensure delicate strips remain stable during processing.
6. Feeding to Downstream Equipment: The corrected metal strip exits the machine and enters punch presses, shearing lines, press brakes, or blanking equipment in a smooth, continuous motion.

This fully integrated workflow improves efficiency, reduces operator intervention, and ensures consistent production quality.

Advantages of HAIWEI ULA Decoiler Straightener

1. Space-saving design: Combines decoiler and straightener in a single unit to maximize floor efficiency.
2. High precision: Dual-stage straightening with 11 precision rolls ensures excellent flatness and surface quality.
3. Versatile material handling: Processes a wide range of metals and delicate thin strips.
4. Automation-ready: Motorized straightener and optional motorized decoiler with inverter-controlled speed support automated production lines.
5. Durable construction: High-quality alloy steel rolls and Japanese electronic components provide long service life and reduced breakdowns.
6. Customizable options: Optional hydraulic mandrel expansion, pneumatic press arm, and motorized decoiler allow adaptation to specific applications.
7. Easy maintenance: Hand wheel roll adjustments, precision-ground rolls, and flip-top access simplify cleaning and adjustments.

HAIWEI ULA Decoiler Straightener Applications in Industry

The HAIWEI 2 in 1 ULA decoiler straightener is ideal for various industrial applications, including:

Metal punching, blanking, and cut-to-length lines
Feeding into press brakes, hydraulic presses, and shearing machines
Automotive, electronics, home appliance, and general metal fabrication
High-precision or delicate material processing where surface quality is critical

By combining precision, flexibility, and automation, the ULA series ensures smooth material handling, reduces labor, and enhances production efficiency.

HAIWEI’s 2 in 1 Decoiler Straightener ULA Series offers a compact, versatile, and high-precision solution for metal coil processing. Its integrated design, high-quality rolls, adjustable gap settings, and optional automation features make it ideal for modern industrial production lines. From initial decoiling to precise straightening and smooth feed to downstream equipment, the ULA series ensures consistent material quality, reduces downtime, and improves overall manufacturing efficiency. Whether for automotive, electronics, appliance, or general metal fabrication, HAIWEI’s ULA decoiler straightener provides a reliable and efficient solution for demanding industrial applications.