Sodium Ion Battery Roll To Roll Slitter Machine For Battery Electrode Slitting

Ⅰ、 Equipment Introduction

1.1 Equipment functions

SN	Item	Specification	Remark
1	Suitable for	Suitable for electrodes in systems such as lithium iron phosphate, lithium cobalt oxide, lithium manganese oxide, ternary, nickel cobalt manganese oxide, lithium titanium oxide, carbon graphite, etc
2	Operating substrate parameters	Aluminium foil(AL)：thickness:9～30um Width: 50～500mm Roll diameter:Max.400mm
		Copper foil(Cu)：thickness:6～30um Width: 50～500mm； Roll diameter:Max.400mm；
3	Roll surface design width	650 mm
4	Ensure cutting width	30~500mm
5	Equipment mechanical operating speed	50m/min
6	Equipment slitting speed	1-40m/min	Depending on the slitting effect
7	Electrode thickness range	70-250μm
8	Slitting method	1. Combination blade cutting; 2. Xicun style knife group structure; 3. Cutting specifications to be determined.
9	Winding method	Two axis slip axis misalignment winding

 

1.2 Introduction to Principles

Load the rolled positive/negative electrode plates into the winding mechanism, and use power traction to feed the plates into the cutting blade group arranged according to the process specifications for cutting. The upper and lower winding mechanisms collect the divided plates into rolls, and the edge materials on both sides are collected by the edge material mechanism. The equipment is assisted by a deviation correction system, a tension transmission system, and a suction system (including blade suction) to ensure precise operation of the electrode strip, ensuring stable cutting, burrs, straightness, and other process indicators within the process range.

 

1.3 Equipment action process

Transfer trolley loading to unwinding shaftèTakeover platformèTraction rollerèSlitting knife groupèOver roll groupèSeparate up and down differential axis winding axisèEdge material windingèSet the required electrode tensionèSwitch the electrode correction system to automatic modeèPress the system start buttonèThe equipment automatically cuts and collects into rolls.

 

 1.4 Overall structure

 

Machine overall size （L×W×H）：about 1800x2300x1900mm

 External dimensions of vacuum cleaner（L×W×H）：about 800x800x1400mm

 External dimensions of knife carriage（L×W×H）：about 1200x400x1000mm

 

 1.5 Main component composition

1.5.1 Unwinding mechanism

SN	Item	Specification
1	Unwinding mechanism	1. Single axis center unwinding; 2.3-inch unwinding; 3. Roll diameter Max.400mm; 4. The maximum width is 500mm.
2	Takeover platform	Double pneumatic pressure rod type;
3	Correction system	1. Automatic ultrasonic servo corrector; 2. Deviation correction stroke ± 40mm; 3. Correction accuracy ± 0.2mm.
4	Tension system	1. Fully automatic torque closed-loop tension control; 2. Adjustable from 0 to 250N.

 

1.5.2 Slitting mechanism

SN	Item	Specification
1	Mechanical speed	Max50m/min
2	Slitting speed	0-40m/min
3	Slitting method	1. Combination blade cutting; 2. Xicun style knife group structure; 3. Cutting specifications to be determined.
4	Slitting knife	1. Combination blade cutter 2. Material: Tungsten steel alloy 3. Blade specifications: Upper blade Φ 100* Φ 65 * 0.7mm (35 degrees) Lower knife Φ 100* Φ 65 * 2.0mm (90 degrees) 4. Blade service life: Cathode: 150000 to 200000 meters Anode: 250000 to 300000 meters 5. The upper blade can be polished 10 times.
5	Knife adjustment method	1. The gap between the upper and lower knives is adjustable; 2. The bite amount can be easily adjusted through the thread.
6	Knife group drive	1. The tool shaft is driven by a servo motor; 2. The percentage of the linear speed of the knife group can be adjusted through the control screen setting, which is simple and easy to operate.
7	Cleaning device	The lower blade has a straight bristle brush
8	Slitting width accuracy	≦±0.1㎜
9	Electrode snake shape	≦±0.3mm/1000mm
10	Metal burrs on electrode	1. Longitudinal metal burrs ＜ 6 μ M 2. Horizontal metal burrs ＜ 10 μ M

 

1.5.3 Winding mechanism

SN	Item	Specification
1	Winding shaft	1. The two axis electrodes are wound up in a staggered manner; 2. Account slide shaft; 3. Three inch winding shaft core; 4. The maximum winding diameter is 400mm; 5. Single ring 40mm; The winding is driven by a variable frequency motor.
2	Roll up accuracy	≦±0.4mm；
3	Pressure wheel	1. Gravity pressure wheel to prevent edge warping; 2. Specification (75mm); (Other specifications to be purchased separately) Cylinder driven opening and closing.
4	Dust removal mechanism	1. Dust the cut material and divide it into two groups: upper and lower; 2. Reverse roller brush suction; 3. The brush is driven by a stepper motor; a. Integrated pipeline suction; b. Dust removal for the cutting edge
5	Edge material mechanism	1. The edge material winding consists of two groups: left and right; 2. The left and right groups are driven by independent servo motors, with adjustable torque; 3. Edge waste>5mm; 4. After pulling the edge material, it is collected by the material box.

 

1.5.4 Control mechanism

SN	Item	Specification
1	Main control unit	1. Rotatable centralized control panel; 2. Omron main controller with state network; 3. The main components are all imported brands.
2	Electrical box layout	1. Partitioned management layout: 2. Independent layout of mechanical, pneumatic, and electrical board zones; 3. The electrical panel area effectively isolates dust and facilitates maintenance and upkeep.
3	Warning/Maintenance	1. Equipped with three color lights and amplifiers; 2. Equipment startup/abnormality, with sound and light alarms; 3. The control interface has an IO checklist.
4	Electrical working conditions	1, 380 V/60Hz, 3-phase 2. Gas consumption: 13 L/h; 3. Total power: approximately 6Kw
5	Equipment utilization rate	≥99%（Band breakage rate<1%）