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Automatic Winding Machine For Cylindrical Cell Production
1. Equipment Description:
This device is employed in the manufacturing of cylindrical lithium-ion battery cells and stands as a critical piece of equipment in battery production. Its operational process is outlined below: The cathode sheets, anode sheets, and separator—preprocessed by the slitting machine—are actively unwound. They then go through a series of steps including tension control, dust removal, web alignment, iron removal, static elimination for the separator, and quality inspection. Subsequently, they are fed into the winding section via guide rollers and electrode feeding mechanisms. Once winding is done, the cell is picked up by a robotic arm, undergoes short-circuit testing, is counted by a photoelectric counter, and conveyed to the collection platform via a conveyor belt. If any defective cells are detected during processing, they are rejected and directed to the defective product collection box.
2. Incoming Material Requirements:
|
Item |
Specification |
|
Cathode and Anode Sheets |
|
|
Slitting Width Tolerance |
Within ±0.1 mm |
|
Coating Width Deviation |
Within 3% |
|
Waviness, Warping, Curling |
No edge waviness or curling; snake-like bending deviation < 0.3 mm/m |
|
Tab Connection |
Red or green tape for detection; single roll ejection |
|
Final Marking |
Remaining material on original roll must signal end; uncoated terminal > 1 m |
|
Separator Film |
|
|
Slitting Width Tolerance |
Within ±0.05 mm |
|
Waviness, Curling, Skirt Shape |
Visually screened |
|
Final Marking |
Green or black marking signals end of material |
3. Technical Specifications & Functions:
|
Category |
Parameter |
Value |
|
Applicable Material |
Electrode Width (excluding tabs) |
9–60 mm |
|
Tab Exposure Length |
8–25 mm |
|
|
Electrode Unit Length |
150–500 mm |
|
|
Electrode Unwinding Diameter |
φ400 mm |
|
|
Winding Needle Diameter |
1.8–6 mm (initial: 3 mm) |
|
|
Separator Unwinding Diameter |
φ300 mm |
|
|
Separator Width |
10–65 mm |
|
|
Winding Diameter |
φ6–20 mm |
|
|
Unwinding Core Inner Diameter |
φ76.2 mm |
|
|
Termination Tape Wraps |
0.5–1.5 turns |
|
|
Termination Tape Width |
20–50 mm |
|
|
Tape Roll Inner Diameter |
φ76.2 mm |
|
|
Winding Mode |
Tab Configuration |
One cathode & one anode tab |
|
Tab Insertion Order |
Anode-first or cathode-first, freely settable |
Function Description:
l Fault alarms, parameter & fault logs, operation history
l Lifecycle tracking with alerts, auto-stop
l USB export for production data
l Three-level password protection
l MES interface reserved
4. Equipment Structure Overview:
Electrode Feeding System (Cathode/Anode)
l Unwinding Stand: Single-arm, dual-support, servo-driven with auto-guiding and pneumatic expansion
l Tension Control: Potentiometer with swing arm; adjustable tension
l Dust Removal: Dual-brush + vacuum extraction system
l Web Guiding: Optical sensors and correction actuators
l Feeding Unit: Servo-driven, front/rear de-ironing
Separator Feeding System
l Same structure as electrode feeding
l Includes static elimination and web guiding
Winding Section
l Three-needle, three-position setup
l Pneumatic needle shifting
l Servo-driven rotation, closed-loop angle/speed control
l Scissor-type electrode cutting with dust removal
l Pneumatic tooth-blade separator and tape cutting
l Pneumatic robotic arm for cell discharge
l Short-circuit detection (100–500V DC, 1–9μA)
Tape Feeding
l Passive unwind
l Cylinder-driven unrolling and pressing
l V-blade cutting
Cell Transfer System
l Intermittent belt conveyor, synchronized with machine cycle
l Separates good/defective cells
l Buffer zone ≥8 cells
Machine Frame
l Welded 50×100 steel structure, stress-relieved
l Double-sided ground wall panels
l Aluminum guide rollers, hard anodized, ≤30μm runout
l Left-side electric cabinet, separated zones for strong/weak current
l Fault display via touch screen & protected switches
l Alarm functions: material-end, break, short circuit, missing tabs, etc.
l Rejects defective cells automatically
l Cell counting and length measuring, alarms if ≥3 consecutive anomalies
l Equipped with safety guards
5. Equipment Technical Parameters:
|
Item |
Parameter |
|
Cutting Burrs |
Lateral: <30μm, Longitudinal: <15μm |
|
Alignment Accuracy |
Cathode/Anode: ≤±0.5 mm, Anode/Separator: ≤±0.5 mm |
|
Cell Diameter Tolerance |
≤±0.20 mm |
|
Pass Rate |
≥99.0% (non-equipment faults excluded) |
|
Uptime Rate |
≥95% (excluding non-equipment downtime) |
|
Productivity |
5–12 PPM (φ10, 250 mm electrode) |
|
Electrode Tension |
20 N adjustable (touch/manual) |
|
Separator Tension |
18 N adjustable (touch/manual) |
6. Installation & Commissioning Requirements:
|
Item |
Specification |
|
Air Source Pressure |
0.5 MPa |
|
Air Flow |
100 L/min |
|
Power Supply |
3-phase 380V, 50 Hz |
|
Power |
10 kW |
|
Weight |
2000 kg |
|
Ambient Temp |
-40°C to +45°C |
|
Humidity |
≤60% RH |
|
Dimensions |
280 cm (L) × 170 cm (H) × 135 cm (W) |
|
Color |
Per customer request |
7. Major Component Specifications:
|
No. |
Name |
Brand |
Origin |
|
1 |
PLC |
INOVANCE |
— |
|
2 |
Detection Parts |
Omron/Keyence |
Japan |
|
3 |
Motor |
TUNGLEE |
Taiwan |
|
4 |
Servo Motor |
INOVANCE |
— |
|
5 |
Pneumatic Parts |
SMC |
Japan |
|
6 |
Bearings |
NSK |
Japan |
|
7 |
HMI |
WEINVIEW TK6102 |
— |
8. Spare Parts Supplied with Machine:
|
Name |
Specification |
Unit |
Qty |
Remarks |
|
Winding Needle |
3.0 |
Set |
2 |
3 included, 3 additional |
|
Separator Knife |
— |
Pc |
1 |
1 included, 1 additional |
|
Magnetic Sensor |
— |
Pc |
2 |
|
|
Toolbox |
— |
Pc |
1 |
|
|
Allen Wrench Set |
1.5–10 mm |
Set |
1 |
|
|
Phillips Screwdriver |
— |
Pc |
1 |
|
|
Long Nose Pliers |
— |
Pc |
1 |
|
|
Adjustable Wrench |
250 mm |
Pc |
1 |
|
|
Open Wrench |
5.5–7 mm |
Pc |
1 |
|
|
Open Wrench |
8–10 mm |
Pc |
1 |
|
|
Open Wrench |
12–14 mm |
Pc |
1 |
|
|
Open Wrench |
14–17 mm |
Pc |
1 |
|
|
Solenoid Valve |
4V-110-06 |
Pc |
1 |
|
|
Regulating Valve |
SCW-045 |
Pc |
2 |
|
Contact: Lily You
Phone: +86 18650702009
Tel: +86 18650702009
Email: saleskatbattery@gmail.com
Add: No. 988 Xiahe Road, Siming District, Xiamen City
919121614
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