High-Performance Electrode Slitting Machine for Lithium-Ion Battery Production

ItemNo :
LITH-XFT750A
MOQ :
1
Compliance:
CE Certified
Warranty:
2 years
Delivery Time:
5 days
Email :
Louis@lithmachine.com

Contact Now

Product Details

High-Performance Electrode Slitting Machine for Lithium-Ion Battery Production

I. Equipment Overview

1.1 Equipment Function Description

The automatic electrode slitting machine is mainly used for slitting lithium-ion battery electrodes. It is a mature and stable model independently developed by our company for mainstream slitting processes in the market. The machine supports a slitting width range of 10–680 mm and is easy to operate, meeting diverse slitting requirements. It adopts a double-shaft rewinding structure. The electrode material is mounted on the unwinding shaft, passively unwound via the drive roller, automatically aligned, and then passes through the slitting knives and dust removal brushes to complete the slitting process as per process requirements. The machine is user-friendly, with simple loading and threading, stable performance, and good slitting results.

1.2 Equipment Operating Procedure

Threading instructions (from right to left):

Transfer material using the loading trolley → mount onto the unwind shaft → manually start the knives → pass through the tension mechanism → manually send the electrode to pre-slit position → pass pre-slit electrode through the dust removal system → place the rewind core onto the differential shaft → fix electrode to the rewind core using tape → set desired electrode tension → switch web guiding system to auto → press start → machine performs automatic slitting and rewinding.

1.3 General Structure

· Overall dimensions (L×W×H): approx. 1810 × 1710 × 1757 mm

· Knife cart dimensions (L×W×H): approx. 1.2 m × 0.36 m × 0.5 m

Note: Actual design may vary.

1.4 Major Component Structures

1.4.1 Unwinding Mechanism

Component	Description
Unwinding Shaft	3-inch air expanding shaft (9+1 lug bladder)
Max Unwind Ø	450 mm
Guiding Control	Manual/Auto mode switch
Guiding System	Photoelectric web guide, ±50 mm stroke, ±0.1 mm accuracy
Tension System	High-sensitivity tension sensor + unwind brake with PLC for closed-loop tension control
Tension Accuracy	±2 N
Splicing Platform	Chrome-plated surface with threading grooves; double pressure bars with pneumatic clamping

1.4.2 Slitting Mechanism

Component	Description
Knife Unit	Adjustable gap between top and bottom knives (via spacer replacement); adjustable engagement depth
Speed Display	Upper/lower knife line speed ratio shown on HMI
Spacer Design	Precision spacers of different widths ensure consistent slitting width
Knife Guide Rollers	Infeed rollers installed on the knife frame
Drive Method	Top and bottom knives driven independently by servo motors

1.4.3 Rewinding Mechanism

Component	Description
Rewind Shaft	Two sets of Φ3″ (ID Φ76.2 mm) differential shafts (core provided by customer)
Max Rewind Ø	450 mm
Tracking Rollers	One set per rewind shaft to adapt to roll diameter variation

1.4.4 Dust Collection System

Component	Description
Knife Dust Collection	Bottom knife equipped with dust removal device
Electrode Dust Collection	One set each for upper and lower electrodes post-slit

1.4.5 Pressure Belt Mechanism

Component	Description
Upper Belt	Pneumatic roller controlled by solenoid valve to press the upper electrode during rewinding
Lower Belt	Pneumatic roller controlled by solenoid valve to press the lower electrode during rewinding

1.4.6 Rewind Pressure Roller Mechanism

Component	Description
Upper Arm	Pneumatically controlled pressure arm with chrome-plated roller
Lower Arm	Pneumatically controlled pressure arm with chrome-plated roller

1.4.7 Drive System

Component	Description
Rewind Drive	Motor drives upper and lower rewind shafts via synchronous belt/pulley system
Traction Drive	Motor drives traction and transition rollers via synchronous belt/pulley system

1.4.8 Control Section

Section	Description
Unwind Control	Controls web guiding and splicing table pressure rods
Rewind Control	Main control section with touchscreen interface

1.4.9 Tension Control Mechanism

Section	Description
Unwinding Tension	Controls tension during unwinding
Post-slit Tension	Open-loop control of tension after slitting

1.5 Main Components

Name	Brand	Origin
PLC	Panasonic	Japan
HMI Screen	Konlyon Tongtai	Taiwan, China
Tension Control System	Aibo / KRD	China
Tension Sensor	Aibo / KRD	China
Magnetic Powder Clutch	Kejia	China
Rewind Motor	Geared Motor	China
Main Drive Motor	Geared Motor	China
Pneumatic Solenoid Valve	AIRTAC	Taiwan, China
Cylinder	AIRTAC	Taiwan, China
Proportional Valve	SMC	Japan
Rotary Encoder	OMRON	Japan
Power Protection Circuit Breaker	Chint/NXB-63 3P	China
Linear Guide Rails	HIWIN	Taiwan, China
Bearings	NSK / Havaro / Imported	Japan / China / Imported
Differential Shaft		China
Dust Collector System		China
Knife Cart	XHL-1000 (self-made)	China
Knife Holder		China

2. Applicable Incoming Material & Product Specifications

2.1 Incoming Material Specifications

Roll diameter	max Φ450 mm
Roll weight	max 320 kg
Core inner diameter	Φ3″ (Φ76.2 mm)
Foil width	max 680 mm
Foil thickness	copper 4.5–20 μm; aluminum 9–25 μm
Coated material max width	max 650 mm
Slitted electrode thickness	50–200 μm

Please provide the following information to match proper tooling and optimize slitting results:
a. Material type: LFP / NCM / LCO / sodium-based cathode, graphite / hard-carbon anode
b. Material thickness: 0.05–0.2 μm
c. Tensile strength: ≥30 kgf/mm²
d. Narrowest and widest roll width: 330–680 mm
e. Narrowest and widest slit widths: 15–207 mm

These parameters are essential for proper tool selection—please pay attention.

3. Equipment Specifications & Parameters

Item	Specification
Unwinding Shaft	3-inch air expanding shaft
Maximum Unwinding Diameter	Max φ450mm
Web Feeding Method	Manual threading
Unwinding Tension Control	Automatic closed-loop tension control system
Tension Control Range and Accuracy	20–200N, ±2N
Slitting Method	Multi-strip simultaneous rotary disc cutting
Rewinding Method	Dual upper and lower slip shaft rewinding units
Slip Shaft	Low-friction slip shaft (#14)
EPC Controller Stroke and Accuracy	±50mm, ±0.1mm
Mechanical Speed	Max 50m/min (continuously adjustable)
Slitting Acceptance Speed	10–18mm: 20m/min; Above 18mm: 30–50m/min
Minimum Slitting Width	10mm
Slitting Width Accuracy	±0.05mm (Edge trim width ≥2mm, fully coated)
Knife Holder Configuration	Two combined knife holders: one configured with a full set of spacers for 25-strip slitting (with knife holders and blades), and the other with 26 knife holders only. (Note: Customer’s universal spacers of the same specification are compatible with this machine’s fixed spacers.)
Knife Holder Transfer Cart	One provided per machine
Dust Collection	Dust collection at material receiving platform, knife holder, and both sides of slit electrodes (requires brush roller structure). Integrated into customer’s central dust collection system. Interface reserved: φ90mm
Demagnetization Configuration	Equipped with four rectangular magnets (10,000 Gauss) post-slitting. Adjustable spacing between 3–15mm
Pressure Roller Configuration	Standard: 25 sets/machine. Model: L20×40mm. Compatible with equipment from this factory
Slitting Knife Brand	Domestic alloy blade, φ100mm disc bladeMinimum usable diameter: φ96mmSupplied blade shim thicknesses: 9.8mm / 9.55mm / 9.3mm / 9.05mm / 8.8mm / 8.55mm / 8.3mm
Electrode Burrs (Including Coating and Foil)	Longitudinal burrs ≤5μm (measured vertically beyond the coating); Lateral burrs ≤7μm (measured horizontally beyond the coating). Incoming materials must be free of removable slurry or visible serration.
Electrode Serpentine Deviation (Slitting Direction Curvature)	Test method: Lay the sheet flat. Fix both ends aligned to a 1-meter ruler. Use a transparent ruler to measure max distance between sheet and ruler: ≤±0.3mm/1000mm. Must ensure good post-calendering flatness, no deformation, sufficient edge trim, no powder loss, no waviness, no stretching, no cracking.
Electrode Edge Waviness	Test method: Lay flat, measure using optical instrument: ≤±0.5mm. Must meet same quality standards as above.
Intelligent Counting Features	Total slitting length, unwind/rewind tension, upper/lower slit speed ratio, friction coefficient, blade life, machine speed, total meters slit, runtime—all adjustable via touchscreen
Electrical Requirements	3-phase, 5-wire, 380V / 30A / 50Hz
Air Consumption	150L/min
Total Power	Approx. 8kW; compressed air pressure >5kg/cm²
Air Quality Requirements	Water-free, oil-free, filtered clean air
Operating Environment	Temperature: 20–40°C; Humidity: 30–70%
Rewinding Width	Min 10mm – Max 680mm (using slip shaft #14)
Rewinding End Face Alignment Accuracy	±0.5mm
Rewinding Tension Control Range	Per shaft: 5–50N
Edge Trim Handling	Trim width: 3–5mm (must be fully coated material)
Machine Utilization Rate	≥95%
Machine Weight	Approx. 3.5T (Customer floor bearing capacity: 600kg/m²)
Machine Color	Frame and electrical cabinet in warm gray; other parts chromed (custom colors require customer-provided color sample)
Accessories Supplied	Chinese user manual, maintenance manual, and manuals for purchased components
Noise Level	≤80 dB measured 1m from winding area (excluding material-related noises like tape peeling)
Note	Customer must provide one roll of electrode sheet (approx. 500m, as applicable for positive/negative) for machine testing