Semi-Automatic Winding Machine for Cylindrical Cell
Semi-automatic winding machine for accurate assembly of single cylindrical cell cores (also known as “jelly roll”) of 18650, 21700 or 32650 cell. Using this machine, cathode and anode films, separated by the top and bottom separator films, are rolled up into a hollow cylinder casing for cylindrical battery applications. It is an ideal tool for the reliable and precise production of high-quality wi ndings of electrode cores.
Features
- Color Touchscreen Control for easy operation and parameter setting
- Motor Direction Control: Forward and reverse switchable (manual mode)
- Adjustable Tension: 0 – 4 N for both top and bottom separator films
- Vacuum-Assisted Feeder Bed: 1200 mm long for precise cathode/anode positioning and feeding
- Automatic Finish Cut: Automatically cuts film after completing the configured number of rotations
- Compatible Battery Sizes: Suitable for cylindrical cells — 18650, 21700, 26650, and 32650
- Jelly roll diameter: 14 – 32 mm
- Length: 25 – 70 mm
Technical Specifications
• Input Power
- Single-phase, 220 VAC, 50 / 60 Hz
- Power consumption: 1 kW
• Compressed Air
- Required pressure: 0.7 MPa
- Note: Air compressor not included.
- Can be ordered separately or purchased locally.
- Safety Note:
If a gas cylinder is used instead of a compressor, a two-stage pressure regulator must be installed to ensure safe operation.
Feeding System
• Cathode / Anode Feeding
- Material: Aluminum foil coated with LiFePO₄, LiCoO₂, NMC (cathode), or copper foil coated with graphite (anode)
- Length: ≤ 1200 mm (recommended)
- Width: 25 – 70 mm (adjustable)
- Thickness: 100 – 300 μm
• Separator Feeding
- Material: Polyethylene (PE) or Polypropylene (PP) separator rolls
- Roll diameter: ≤ 250 mm
- Width: 25 – 70 mm
- Thickness: ≤ 100 μm
- Tension range: 0 – 4 N (top & bottom films)
• Winding Section
- Winding needle: Ø 3.5 mm
- Electrode winding size:
- Outer diameter: 14 – 32 mm
- Length: 25 – 70 mm
- Winding Speed: 0 – 400 rpm (adjustable)
- Precision: < 0.5 mm edge roughness
- Support: Spreadsheet available for calculating turn count and electrode length
• Tape Dispenser
- Power: 220 VAC, 50 / 60 Hz, 160 W
- Cutting length: 13 – 60 mm (adjustable)
- Tape width: 3 – 25 mm (adjustable)
- Tape roll size: 25 / 32 / 75 mm ID, up to 130 mm OD
- Automatic taping for finished electrode cores
- Manual available for download
• Optional Accessories
- Complete sets of rechargeable battery research equipment available from MTI
- Consumables can be purchased separately
• Physical Specifications
- Machine Size: 1000 mm (L) × 700 mm (W) × 900 mm (H)
- Net Weight: 150 kg
- Shipping Weight: 885 lbs
- Shipping Dimensions: 52" × 39" × 50"
• Warranty & Compliance
- Warranty: 1-year limited warranty with lifetime support
- Note: Damage due to rusting, poor storage, or improper maintenance not covered
- Certification: CE Certified
- NRTL or CSA Certification available at additional cost
• Operation & Safety Notes
- Place the machine on a flat, vibration-free surface
- Do not alter factory air cylinder settings without consulting MTI
- Caution:
- Avoid touching the cutter or rotating parts during operation
- Keep hands, hair, and clothing away from moving assemblies
- Display warning signs and ensure others stay clear while operating
- Fully Automatic Winding Machine available upon request




















