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High-Efficiency Roll-to-Roll Electrode Cutting Machine for Lithium Battery Production

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  • Contact Person : Louis Yang
  • Email : Louis@lithmachine.com
  • Address : No. 5 Nanshan Road, Huli District, Xiamen City, Fujian Province, China
High-Efficiency Roll-to-Roll Electrode Cutting Machine for Lithium Battery Production

High-Efficiency Roll-to-Roll Electrode Cutting Machine for Lithium Battery Production

  • ItemNo :

    LITH-XFT450

  • MOQ :

    1

  • Compliance:

    CE Certified

  • Warranty:

    2 years

  • Delivery Time:

    5 days

  • Email :

    Louis@lithmachine.com
  • Product Details

High-Efficiency Roll-to-Roll Electrode Cutting Machine for Lithium Battery Production



I. Equipment Overview

1.1 Function Description

The Slitting Machine is primarily used for slitting lithium-ion battery electrode sheets. It is a mature and stable model widely used by our company. The machine supports a slitting width range of 15–380 mm, is user-friendly, and meets various slitting process requirements. It adopts a dual-shaft rewinding structure: the electrode sheet is mounted on the unwind shaft, passively unwound via the drive roller, and guided automatically. After passing through the slitting blades and iron powder removal unit, the electrode sheet is slit and rewound according to process requirements. The machine is easy to operate, with simple loading and threading, stable performance, and excellent slitting results.

 

1.2 Key Technical Parameters

· Production Capacity: Max mechanical speed is 80 m/min; typical production speed is 0.5–50 m/min with stepless adjustment.

· Rewinding Alignment Accuracy: ≤ ±0.5 mm (assuming good incoming material quality).

· Pass Rate: ≥ 99% (excluding factors such as poor incoming material).

· Utilization Rate: ≥ 95% (excluding material replacement and incoming quality issues).

 

Table 1.1 Main Components List

No.

Component Name

Description

Quantity (sets)

1

Main Frame Assembly

Electrical cabinet, side plates, mounting panels

1

2

Unwinding Unit

Air-expanding shaft, tension roller, locking cylinder, web guiding unit

1

3

Splicing Platform

Pressure cylinder, pressure bar, splicing platform

1

4

Unwind Tension Unit

Tension controller, sensors, rollers

1

5

Drive Unit

Motor, drive roller, press roller, pressure adjustment system

1

6

Adjustment Roller Unit

Pre-slitting and post-slitting upper/lower adjustment rollers

3

7

Knife Holder Assembly

Upper and lower knife shafts, adjustment rollers, drive, dust removal

1

8

Dust Removal Unit

Blade dust removal and electrode powder brushing with 8 brush boxes

2

9

Iron Removal Unit

Magnetic bars and holders, magnetic strength 6000 Gauss

4

10

Pressing Belt Unit

Upper and lower pressing belt structures

1

11

Rewind Tension Unit

Upper/lower tension systems and sensors

1

12

Tracking Roller Unit

Upper and lower tracking rollers

1

13

Rewind Unit

Slip shafts, pressure rollers, motors

2

14

Edge Trim Unit

Guide rollers, pressure rollers, waste bins

1

1.3 Equipment Diagram

 

Figure 1.1 Equipment diagram of slitting machine (for reference only)

 

1.4 Equipment Workflow

The equipment workflow is outlined as follows:

Web Threading Procedure:

1. Use a transfer cart to load material onto the unwind shaft.

2. Manually thread the electrode sheet through the splicing unit.

3. Guide it through the tension system.

4. Manually feed the sheet to the slitting blades for pre-slitting.

5. Pass the pre-slit sheet through the dust and iron removal system.

6. Place the core sleeve onto the slip shaft.

7. Tape the electrode sheet onto the core sleeve on the slip shaft.

8. Set the required sheet tension.

9. Switch the web guiding system to automatic mode.

10. Press the system start button.

11. The equipment automatically slits and rewinds the material into rolls.

 

1.5 Major Components

1.5 Main Component Structure

1.5.1 Unwinding Mechanism
a) The unwinding mechanism is integrated, designed and assembled in unison with the whole machine to ensure accuracy in electrode feeding and slitting.
b) Equipped with an independent web guiding and tension system for more stable electrode and tension control performance.
c) Uses high-quality materials and optimized structural design to ensure material and mechanical performance requirements are met.

 

Unwinding Part

3-inch air shaft unwinding

Unwinding Diameter

Max Φ450

Web Guiding Control Mode

Manual/Automatic switch

Web Guiding System

Photoelectric web guiding system; total guiding stroke 0–80 mm

Tension System

Tension Range: 50–100 N

Tension Control Accuracy: ≤ ±1.5 N

Tension Control Mode: Closed-loop control

 

1.5.2 Knife Rack Mechanism
a) Micron-level machining precision ensures better blade concentricity accuracy.
b) Removable bearing seats significantly improve blade replacement speed.
c) Micro-adjustable knife rack allows for precise adjustment of blade engagement, effectively controlling burrs and extending blade life.
d) Adjustment rollers on both sides of the knife rack facilitate tuning the electrode’s entry and exit angles; together with the blade engagement, they effectively solve the wavy edge issue.
e) Line speed ratio between upper and lower blades is adjustable. Both are driven by independent servo motors and adjustable via touchscreen.

 

Slitting Knife Rack

Single-side fixed knife rack; upper/lower blade gap adjusted by spacers; engagement depth adjusted via threaded dial

 

Line speed ratio adjustable according to slitting needs

 

Cutting width fixed by precision spacers (tolerance ±0.002 mm)

 

Entry/exit rollers installed; upper/lower blades driven by independent servo motors

Knife Rack Quantity

One in use, one spare; one rack fully loaded with cutting blades and spacers, one empty rack

 

1.5.3 Rewinding Mechanism

 

Electrode Mechanism

Two sets of 3-inch differential shafts

Rewinding Diameter

Max Φ350 mm

Edge Waste Collection Device

Two independent pinch roller systems; proportional line speed collection to prevent material blockage

Tracking Rollers

Upper/lower rewinding shafts with tracking rollers; seamless tracking ensures winding quality

Rewinding Press Rollers

One set each for upper/lower shafts; improves rewinding stability and prevents telescoping defects

Rewinding Tension System

Tension Range: 50–100 N

Tension Control Accuracy: ±1.5 N

Tension Control Mode: Closed-loop

Structure: Tracking rollers + differential shafts, air pressure controlled by proportional valve

 

1.5.4 Dust Removal & Iron Removal System
The dust collection system adopts a multi-stage setup: blade area vacuum, double-sided electrode brushing after slitting. The brushing unit uses roller brushes and dust boxes to reduce electrode flutter and effectively remove dust.
The de-ironizing system uses dual-sided magnetic separation after slitting. With magnetic strength of 6000 Gauss, it effectively removes iron powder from both sides of the electrode.

 

1.5.5 Key Electrical Components

Name

Brand

Origin

PLC

Panasonic

Japan

Touchscreen

WEINVIEW

Taiwan, China

Tension Control System

AIBO

Shenzhen, China

Magnetic Powder Brake

KEJIA

Shenzhen, China

Tension Sensor

AIBO

Shenzhen, China

Inverter

MITSUBISHI

Japan

Servo Motor

Panasonic

Japan

Pneumatic Solenoid Valve

AIRTAC

Taiwan, China

Cylinder

AIRTAC

Taiwan, China

Rotary Encoder

OMRON

Japan

Circuit Breaker

CHINT/NXB-63 3P

Imported

Linear Guide

HIWIN

Taiwan, China

Bearing

NSK/Imported

Japan

Differential Shaft

 

TMAX Custom

Dust Extraction System

 

TMAX Custom

Knife Rack Cart

XHL-1000

TMAX Custom

Knife Rack

 

TMAX Custom

 

2. Incoming Material & Product Specifications

2.1 Base copper foil thickness: 6–20 μm; electrode thickness: 50–300 μm
2.2 Base aluminum foil thickness: 10–25 μm; electrode thickness: 50–300 μm
2.3 Web width: 50–400 mm (coating width: max 380 mm); max unwind diameter: φ450 mm
2.4 Slitting width: ≥ 15 mm; rewind diameter: max φ350 mm
2.5 Unwind core diameter: 3 inch; rewind core diameter: 3 inch
2.6 Slitter set: 14 lanes; post-slit width 58 mm or 59 mm (choose one)
2.7 Max unwind load: 500 kg; max rewind load: 200 kg
2.8 Slitting width min ≥ 15 mm; minimum trimmed edge width (coated area): ≤ 3–5 mm

 

3. Technical Parameters

3.1 All slitting blades diameter φ100, tungsten carbide:

· Negative electrode top blade life ≥ 500,000 m, regrindable ≥ 10 times

· Positive electrode top blade life ≥ 300,000 m, regrindable ≥ 10 times; each regrind yields ≥ 200,000 m

· Bottom blade single side life ≥ 500,000 m; reversible; combo spacer option available per customer

3.2 Capacity/speed: max mechanical speed 80 m/min; typical production 0.5–50 m/min, stepless
3.3 Equipment failure rate (machine-caused) ≤ 1%
3.4 Slitting accuracy: width tolerance ± 0.05 mm
3.5 Yield rate ≥ 99%
3.6 Post-slit edge burr: longitudinal ≤ 5 μm; transverse ≤ 7 μm
3.7 Post-slit edge waviness ≤ ± 0.2 mm/m; no sawtooth waviness; edges smooth and flat
3.8 Slit edge ripple height ≤ 0.3 mm/m
3.9 Web guide stroke: ± 50 mm; manual/auto; accuracy ± 0.1 mm
3.10 Rewinding regularity ≤ ± 0.5 mm
3.11 Electrode tension loop control 5–10 kgf; accuracy ± 1.5 N
3.12 Repeatability/reproducibility: 20+ hours/day with routine maintenance
3.13 Power: AC 380 V, 50 Hz, ~8 kW, 3phase grounded
3.15 Compressed air: 0.6 MPa, 5–8 m³/min; interface tube OD 10 mm
3.16 Weight (approx.): 2,500 kg (actual measure preferred)
3.17 Machine dimensions (L×W×H): approx. 1,710×1,600×1,700 mm (final design prevails)
 Dust collector dimensions (L×W×H): approx. 670×700×1,300 mm (standalone industrial unit)

 

4. Main Advantages

1. 

Slitter features high shaft machining precision:
 a. Roller and drive shafts OD tolerance ≤ ± 0.02 mm, cylindricity ≤ ± 0.02 mm
 b. Dynamic and static balancing with dualdirection inspection

2. Max speed 80 m/min; typical production 0–50 m/min stepless

3. Equipment weight ≥ 2.5 t ensures stability during highspeed operation

4. Fixed spacer knife rack: spacer face parallelism ≤ 0.005 mm; simple structure; easy for novice or experienced operators

5. Servodriven cutter and rewind ensure stable, reliable performance

6. Servodriven differential shaft rewind simplifies unloading; stable and easy operation

7. Adjustable upper/lower blade speed ratios via touchscreen for optimal slitting

8. High slitting precision: burr ≤ 5 μm longitudinal, ≤ 7 μm transverse (materials must meet specs)

 

5. Standard Configuration & Compliance

1. Appearance: control cabinet standard; main frame color “Computer White CH131”; other parts chromeplated (provide color swatch if needed)

2. Complies with national safety standards and customer safety codes

3. Includes Chinese operation manual and maintenance handbook

4. Comes with tool kit (hex wrenches, screwdrivers, etc.)

5. Acceptance slit specs: 7 lanes × 58 mm or 59 mm (18650 cell); machine equipped for one spec only for acceptance test

6. Wear parts list:

Part Type  

Part Name   

Model

Wear part  

Upper blade  

Φ130×90×1×26°

 

Lower blade  

Φ130×75×3×90°

7. Delivery kit for one machine (additional items to be purchased separately):

#

Item

Model/spec

Unit

Standard Qty

Order Qty

1

Upper blade

130×88×1×26°

pcs

 

 

2

Lower blade

130×70×3×90°

pcs

 

 

3

Tension spring

H 2.5 mm

pcs

 

 

4

Spacer (upper)

H 9 mm

pcs

 

 

5

Spacer (upper)

H 10 mm

pcs

 

 

6

Spacer (upper)

H 56 mm

pcs

 

 

7

Spacer (upper)

H 64.5 mm

pcs

 

 

8

Spacer (lower)

H 18 mm

pcs

 

 

9

Spacer (lower)

H 12.5 mm

pcs

 

 

10

Spacer (lower)

H 19 mm

pcs

 

 

11

Spacer (lower)

H 56.5 mm

pcs

 

 

12

Spacer (lower)

H 48 mm

pcs

 

 

13

Dualstep spacer

H 25 mm

pcs

 

 

14

Dualstep spacer

H 24 mm

pcs

 

 

15

Blade holder seat

H 15 mm

pcs

 

 

16

Knife rack

per design

set

 

 

17

Knife rack cart

standard size

unit

 

 

Note: Each machine is delivered with one slag wheel per slit spec, one knife rack loaded with that spec; additional specs require separate purchase.





PACKAGE:

     1 Standard exported package: Internal anticollision protection, external export wooden box packaging.

     2 Shipping by express, by air, by sea according to customers' requirements to find the most suitable way.

     3 Responsible for the damage during the shipping process, will change the damage part for you for free.

 

DELIVERY TIME:15-20 days after confirming order,detail delivery date should be decided according to production season and order quantity





HotTags : Automatic Slitting Machine Battery Electrode Slitting Machine Roll To Roll Slitting Machine

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