UL Series Two-in-One Material Rack and Unloading Rack
The UL series two-in-one material rack and uncoiler is an automated equipment integrating the functions of material feeding and leveling. It is mainly used for uncoiling, leveling and feeding of metal coil materials, and is suitable for stamping production lines of press machines. This product is specially designed for industrial manufacturing and can efficiently handle materials such as coil steel strips, medium and thick plates, and thin plates, achieving functions such as automatic feeding, correction, flattening and uncoiling.
Sourcing note: The UL Series two-in-one material rack and straightener is manufactured by Guangdong Miqi Machinery Co., Ltd. ("Guang Dong Mi Qi"). Foshan DAIDISIKE Optoelectronics Technology Co., Ltd. supplies and integrates this equipment as a sourcing partner within complete punch-press production lines; it is OEM/partner equipment, not DAIDISIKE-manufactured.
The 2-in-1 Material Rack Leveling Machine (also known as 2-in-1 Decoiler Straightener) is an efficient automated device designed for metal coil processing, used for automatic feeding and straightening in punch presses, shearing machines, or other metal forming equipment. This machine integrates the material rack (uncoiler) and leveling machine (straightener) into one unit, saving space and improving production efficiency. Produced by Guang Dong Mi Qi, this series is suitable for various metal coils such as steel sheets, aluminum sheets, and stainless steel, widely used in automotive parts, electronics, and hardware manufacturing.
Key Features
Integrated Design: Combines uncoiler and straightener in one, compact structure, small footprint, easy to install and maintain.
High-Precision Straightening: Uses precision roller system to effectively eliminate coil bending, stress, and wavy deformations, ensuring flat output.
Automated Operation: Supports automatic feeding with adjustable speed, reducing manual intervention and increasing productivity.
Stable and Durable: Made of high-quality steel and electrical components, strong load capacity, long service life.
Safe and Reliable: Equipped with overload protection, emergency stop button, and safety guards, compliant with industrial safety standards.
Multiple Models: Available in models UL-200, UL-300, UL-400, UL-500, UL-600, UL-700, and UL-800, suitable for different material widths and thicknesses.
Example Specifications
Material Width: 200-800 mm
Material Thickness: 0.35-2.2 mm or 0.5-3.0 mm (depending on model)
Coil Inner Diameter: 450-530 mm
Coil Outer Diameter: 1200 mm
Max Load: 800-5000 kg
Feeding Speed: 15 m/min
Horsepower: 1-7 HP
Expansion Method: Manual/Hydraulic
Appearance Color: Dragon White (customizable)
Product Advantages
Saves Labor: Automatic uncoiling and straightening reduce the number of operators.
Improves Efficiency: Continuous feeding without frequent stops for adjustments.
Reduces Scrap Rate: Precise straightening ensures consistent material quality.
Easy Integration: Can be linked with punch presses, shears, etc., to form automated production lines.
Eco-Friendly and Energy-Saving: Low noise and low energy consumption design.
The working principle of the 2-in-1 Material Rack Leveling Machine is based on a combination of mechanical and electrical controls, mainly involving uncoiling, straightening, and feeding processes. The machine uses motor-driven roller systems to automatically unwind, flatten, and output the coil.
Detailed Workflow
Uncoiling Process: The coil is placed on the material rack and secured by manual or hydraulic expansion arms to fit the inner diameter (450-530 mm). The motor drives the rack to rotate, slowly releasing the coil. A sensing arm or photoelectric sensor monitors coil tension, automatically adjusting rotation speed to prevent looseness or tightness.
Straightening Process: The released coil enters the straightener section, passing through multiple sets of precision rollers (upper and lower rollers alternately arranged, typically 7-9 sets). The rollers apply pressure to eliminate internal stress, bending, and wavy deformations in the coil. Roller gaps can be adjusted via handwheels or digital controls to accommodate different thicknesses (0.35-3.0 mm). After straightening, the material becomes flat and uniform.
Feeding Process: The straightened material is output through traction rollers at a fixed speed of 15 m/min. It can synchronize with downstream equipment (e.g., punch press) via PLC control for automatic intermittent feeding. Sensors monitor material position for precise delivery.
Control System: Equipped with an electrical control box including inverters, PLC controllers, and touchscreens. Users can set speed, pressure, and modes (manual/automatic). Safety mechanisms like overload protection automatically shut down to prevent damage.
Auxiliary Functions: Hydraulic expansion arms for heavy coil loading; air cylinders assist pressure arms to prevent coil rebound; optional hydraulic systems increase load capacity to 5000 kg.
The entire process ensures continuous transformation from coiled to flat output, suitable for coils with thicknesses of 0.1-6 mm (depending on model). The principle emphasizes mechanical balance: counter-bending offsets the original coil curvature for high-precision flattening.
Safety Warnings
Read this manual before operation and ensure all personnel are trained.
Regularly inspect electrical wiring to avoid shorts or overloads.
In emergencies, press the red stop button.
Installation Guide
Select a flat, sturdy surface and ensure the machine is level (use a level gauge).
Connect power (220V/380V, three-phase, depending on model) and ground wire.
Install the material rack: Secure base bolts and adjust expansion arms to coil I.D.
Connect to downstream equipment: Use interface cables for synchronization with punch press.
Test no-load operation: Start the motor and check for noise and vibration.
Operation Steps
Power On: Plug in power, press start button; screen shows initialization.
Load Coil: Use forklift to place coil on rack, secure with expansion arms (manual wheel or hydraulic pump).
Set Parameters: Input material width, thickness, speed (default 15 m/min), and straightening pressure via touchscreen.
Start Auto Mode: Press “Auto” button; machine begins uncoiling, straightening, and feeding.
Monitor Process: Observe output for jams; pause and adjust roller gaps if needed.
Shutdown: Press stop button after task, unload remaining coil.
Maintenance and Care
Daily: Clean rollers and sensors, check oil levels.
Weekly: Lubricate bearings and gears with specified oil.
Monthly: Inspect motor and electrical components, tighten bolts.
Troubleshooting:
Uneven Coil: Adjust roller pressure.
Unstable Speed: Check inverter settings.
Overload Alarm: Reduce load or inspect motor.
Storage: In a dry, ventilated area, away from direct sunlight.
Specifications Table
Model
UL-200
UL-300
UL-400
UL-500
UL-600
Material Width (mm)
200
300
400
500
600
Material Thickness (mm)
0.35-2.2
0.35-2.2
0.35-2.2
0.35-2.2
0.35-2.2
Coil I.D. (mm)
450-530
450-530
450-530
450-530
450-530
Coil O.D. (mm)
1200
1200
1200
1200
1200
Max Weight (kg)
800
1000
1500
2000
2000
Feed Speed (m/min)
15
15
15
15
15
Horsepower (HP)
2
3
3
5
5
Frequently Asked Questions
What is a 2-in-1 decoiler straightener and how does it differ from separate machines?
A 2-in-1 decoiler straightener integrates the uncoiler (material rack) and the straightener (leveler) into a single frame. The UL series uncoils, levels and feeds metal coil in one pass, saving floor space and reducing handling. Compared with separate uncoiler and straightener units, it cuts setup time and aligns naturally with stamping press automation on a coil line.
What coil width, thickness and weight can the UL series handle?
Across models UL-200 to UL-800 the UL series handles material widths of 200-800 mm and thicknesses of 0.35-2.2 mm (up to 0.5-3.0 mm on some models). Coil inner diameter is 450-530 mm with a 1200 mm outer diameter. Maximum coil weight ranges from 800 kg up to 5000 kg with the hydraulic expansion option.
How fast does the UL series feed material into a punch press?
The traction rollers output straightened material at a fixed feed speed of 15 m/min. Through PLC control the machine synchronizes with the downstream punch press for automatic intermittent feeding, while sensors monitor material position for precise delivery. Horsepower ranges from 1-7 HP depending on the model and coil load.
Should I choose manual or hydraulic expansion arms?
Manual expansion arms suit lighter coils and lower-budget lines, while hydraulic expansion arms speed up heavy coil loading and raise capacity to 5000 kg. Air cylinders assist the pressure arms to prevent coil rebound. For high-throughput stamping press automation handling heavy steel coils, the hydraulic option is recommended.
Is the UL series an NC servo feeder or an air feeder?
The UL series is a combined material rack and straightener, not a feeder itself; it prepares flat coil and feeds it via traction rollers at 15 m/min under PLC control. It typically pairs with an NC servo feeder or air feeder on a 3-in-1 coil line. See our air feeder vs NC servo feeder guide to match the right feeder to your press.
