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+--- Thread: Step-by-Step Guide to Operating HAIWEI 2 in 1 Decoiler Straightener Machine GL Series (/showthread.php?tid=120352)
Step-by-Step Guide to Operating HAIWEI 2 in 1 Decoiler Straightener Machine GL Series - pysong - 02-26-2026
The HAIWEI 2 in 1 Decoiler Straightener Machine GL Series is a high-efficiency, precision solution for handling metal coils ranging from 0.3 mm to 4.5 mm in thickness. Integrating both decoiling and straightening functions into a single compact unit, the GL Series is designed to maximize floor space while delivering stable and accurate strip feeding for operations such as automatic punching, cut-to-length, and blanking. This guide provides step-by-step instructions to operate the GL Series, ensuring optimal performance and long-term reliability.Get more news about decoiler straightener,you can vist our website!
Decoiler Straightener Operating Step 1: Preparation Before Operation
Safety Checks
Verify all emergency stop buttons and limit switches are functional.
Ensure protective covers are installed and working.
Clear the surrounding area of obstacles to allow safe coil handling.
Confirm Coil Specifications
Ensure the coil width and thickness meet GL Series capacity (0.3–4.5 mm).
Compatible materials include HR steel, CR steel, aluminum, stainless steel, brass, copper, and thin plastics.
Startup and Initial Settings
Power on the machine and check the inverter, motor, and straightener functions.
Adjust the upper and lower roll gaps using the worm gear mechanism according to material thickness.
Verify that the straightening rolls are clean, polished, and properly aligned.
Decoiler Straightener Operating Step 2: Loading the Coil onto the Decoiler
Positioning the Coil
Place the coil on the motorized decoiler spindle using a crane or forklift.
Center the coil to prevent feeding deviation.
Securing the Coil
Engage the motorized decoiler to lock the coil in place.
Ensure the coil rotates freely without obstruction.
Initial Strip Feeding
Feed the leading edge of the coil into the straightener.
Check that the strip enters the first leveling rolls smoothly.
Decoiler Straightener Operating Step 3: Straightening the Material
The GL Series uses a dual-section straightening design for high precision:
First Section: 3 rolls (upper 2/lower 1) remove initial curvature and stress.
Second Section: 17 rolls (upper 8/lower 9) finalize flatness and remove residual internal stresses.
Operating the Straightener
Turn on the motorized straightening rolls.
Adjust roll pressure via the worm gear mechanism to ensure adequate flattening without scratching.
For delicate materials such as aluminum, brass, or copper, reduce feed speed and roller pressure.
Speed Synchronization
Use the inverter to adjust feeding speed, synchronizing with downstream equipment (punch press, shearing machine, or press brake).
Monitor strip entry to ensure smooth continuous feed.
Decoiler Straightener Operating Step 4: Feeding into the Production Line
Maintain consistent feeding into punching, blanking, or forming machines.
Continuously check strip flatness. Any camber or wave indicates a need for adjustment.
Adjust the feeding speed to match the operational rhythm of the downstream press or cutting equipment.
Decoiler Straightener Operating Step 5: Daily Maintenance and Troubleshooting
Roll Maintenance
Clean rollers regularly to prevent dirt or metal debris from scratching the strip.
Inspect for wear or surface damage and polish or replace as needed.
Mechanical Checks
Ensure chains, bearings, and drive gears are lubricated according to schedule.
Inspect all moving parts for smooth operation.
Electrical and Control Inspection
Check inverter settings and motor performance.
Inspect wiring and sensors for damage or misalignment.
Decoiler Straightener GL Series Common Questions & Troubleshooting Guide
1. Material Not Feeding Smoothly
Causes:
Incorrect decoiler speed or tension
Improper roll alignment
Dirty or oily material surface
Solutions:
Adjust decoiler motor speed and tension
Re-align leveling rolls
Clean coil surface before feeding
2. Flatness Not Achieved
Causes:
Roll gap misadjustment
Material exceeds capacity
Insufficient straightening passes
Solutions:
Re-set roll gaps according to thickness
Ensure material is within 0.3–4.5 mm specification
Reduce feed speed or increase passes
3. Abnormal Noise
Causes:
Lack of lubrication
Foreign debris in rollers
Worn bearings
Solutions:
Lubricate drive and roller mechanisms
Remove foreign objects from roller area
Replace bearings if necessary
4. Roller Marks on Strip
Causes:
Dirty or damaged rollers
Excessive roller pressure
Soft or coated materials
Solutions:
Clean and polish rollers
Adjust pressure gradually
Use protective film or lower pressure for coated sheets
5. Machine Vibrations
Causes:
Uneven floor or installation
Imbalanced rollers
Feeding speed too high
Solutions:
Ensure flat, reinforced foundation
Balance rollers
Reduce feed speed
Advantages of HAIWEI GL Series Decoiler Straightener
Integrated design: Decoiler and straightener combined into one compact unit.
High precision: Dual-section straightening ensures excellent flatness.
Versatile: Supports steel, stainless steel, aluminum, brass, copper, and thin plastics.
Automation-friendly: Motorized decoiler and inverter-controlled feed allow synchronization with presses.
Durable construction: Alloy steel, hard-chrome plated rollers provide longevity and reliability.
Low maintenance: Easy adjustment, cleaning, and inspection reduce downtime.
The HAIWEI 2 in 1 Decoiler Straightener Machine GL Series delivers high-precision, stable, and efficient coil processing. By following proper operating procedures—from coil loading, roller adjustment, speed synchronization, to routine maintenance—operators can ensure consistent strip flatness, smooth feeding, and reliable production output. With its dual-section straightener, motorized decoiler, and wide material compatibility, the GL Series is a trusted solution for modern stamping, blanking, and coil-fed manufacturing lines.