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680mm Width Double Sides Slot Die Coating Machine For Prismatic Battery Production Plant

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  • Contact Person : Louis Yang
  • Email : Louis@lithmachine.com
  • Address : No. 5 Nanshan Road, Huli District, Xiamen City, Fujian Province, China
680mm Width Double Sides Slot Die Coating Machine For Prismatic Battery Production Plant

680mm Width Double Sides Slot Die Coating Machine For Prismatic Battery Production Plant

  • ItemNo :

    LITH-ZL-J750-40
  • MOQ :

    1
  • Compliance:

    CE
  • Warranty:

    2 years
  • Delivery Time:

    5 days
  • Email :

    Louis@lithmachine.com
  • Product Details

680mm Width Double Sides Slot Die Coating Machine For Prismatic Battery Production Plant


I. Brief introduction of coater structure

1. Unwinding mechanism

2. Coating mechanism (2 sets)

3. Oven mechanism (double-layer 40m)

4. Traction mechanism (2 sets)

5. Winding mechanism

6. Control system


Overall size and weight of coating equipment:

size length 55000mm * width 4000mm (excluding maintenance space) * height 4000mm

Weight: About 40T

 

Function overview:

ZL-J series coating machine is a professional lithium battery electrode coating equipment.

▲ it is applicable to the coating process of oily or aqueous lithium iron phosphate, oily lithium cobalt oxide, ternary, lithium manganate, nickel cobalt lithium manganate, oily or aqueous negative carbon graphite, lithium titanate and other slurry systems;

▲ using the full-automatic PID closed-loop tension control system, the tension control accuracy can reach the level of ± 1n;

▲ imported standard parts such as Siemens PLC control system and high-precision servo motor are used to ensure the ultra-high consistency and stability of coating products in terms of surface density and size. The proportion of imported standard parts in the standard parts of the whole machine is as high as 85%.

▲ with the characteristics of high-speed coating, high precision and high consistency, it is the preferred coating equipment for power batteries.

 

II.  Technical parameters and main configuration of equipment

AMain configuration of equipment

No.

Name

Place of Origin

1

Air switch

Schneider (France)

2

PLC

Siemens (Germany)

3

Touch screen

Siemens (Germany)

4

Modular

Siemens (Germany)

5

Intermediate relay

Schneider (France)

6

servo motor

Siemens (Germany)

7

Direct drive servo motor (DDR)

Rexroth (Germany)

8

Feeding pressure detection

Bd.sensors/valcom (Germany / Japan)

9

Precision metering pump

Heishin (Japan)

10

Low friction cylinder

Tengcang (Japan)

11

Planetary reducer

Newcastle (Germany)

12

Circuit breaker

Schneider (France)

13

AC contactor

Schneider (France)

14

Solid state relay

Xinda (Taiwan)

15

Thermal protection

Schneider (France)

16

Thermostat

Omron (Japan)

17

Automatic deviation correction

Aibo (domestic)

18

Full automatic tension

PID closed loop control (self-made)

19

Main discharging (receiving) motor

Siemens (Germany)

20

Optical fiber electric eye

KEYENCE (Japan)

21

Deep groove ball bearing (machine head)

NSK (Japan)

22

Coating roller

Hard chromium plating (self-made)

23

Guide roller

Φ 118 aluminum alloy surface anodized, finish rc0.4 (domestic)

24

Frequency converter

Rexroth (Germany)

25

Knife adjusting grating ruler

Keens (Japan)

26

Fan (stainless steel)

Hongjian (domestic)

27

Extrusion head

Mitsubishi

28

Digital pressure gauge

Bode (Sweden)

29

Pneumatic components

SMC (Japan)


BVulnerable parts

No.

Name

Brand

Quantity

Stock time

Remarks

1

Steel roller

self-control

1 piece /2 sets

30 days

Imported chrome plating materials

2

Steel roller bearing

NSK/NTN

2 /1 set

15 days

According to the procurement cycle

3

Heating tube

domestic

3 pieces / set

1 day

 

4

Thermocouple

domestic

1 piece / set

1 day

Adapt to the longest drying path

5

inner hexagon spanner

domestic

1 set / set

1 day

 

6

Adjustable wrench

domestic

1 piece / set

1 day

 

7

Valve body sealing ring

domestic

1 set / unit

1 day

 

8

Torque wrench

Japan

1 set / unit

15 days

 

9

Die head lifting truck

domestic

1 set / unit

15 days

 

10

Marble platform

domestic

1 set / unit

10 days

 

11

Feeding pipe

domestic

12m / set

1 day

 

12

Pole sampler

domestic

1 / set

2 days

 

13

Shim

TMAX

3 sets / unit

15 days



(C)Automatic feeding system:A set of automatic feeding system (60L) is standard.

(D)Appearance color: Except for the stainless steel part, the color of the box conforms to the standard color card provided by the demander.

(E)Device functions:

No.

Project

Technical parameter

Notes

1

Suitable system

Oily or aqueous lithium iron phosphate, lithium cobalt oxide, lithium manganate, ternary, nickel cobalt lithium manganate, lithium titanate, carbon graphite, etc

 

2

Operating substrate parameters

Aluminum foil (Cu):

thickness 9 ~ 25um;

Width 300 ~ 720mm;

Roll diameter max.500mm;

Weight max.500kg;

 

Copper foil (Cu): thickness 4.5 ~ 30um;

Width 300 ~ 720mm;

Roll diameter max.500mm;

Weight max.500kg

Either single side light or double side light

3

Design width of roll surface

750 mm

 

4

Guaranteed coating width

200~680mm

 

5

Equipment mechanical running speed

40m/min

 

6

Equipment coating speed

1-32/min

It depends on the drying condition

7

Suitable for slurry viscosity

2000~16000 CpsPositive pole

1000~16000 CpsNegative pole

 

8

Single side coating dry thickness range

40~200g/m2

 

9

Minimum intermittent length

Coating speed < 5mm within 15m/min;

Coating speed above 25m/min  8mm;

 

10

Minimum coating length of multiple sections

50mm

Coating speed≤12m/min

11

Solvent properties

Oily solvent NMP(s.g=1.033,b.p=204℃)

 

Aqueous solvent H2O/NMP(s.g=1.000,b.p=100℃)

 

12

Suitable solid content

Positive electrode SC. 60%±20%

 

Negative pole  SC. 50%±15%(PVDF system)

SC. 50%±10%(SBR system)

 

13

Proportion

Positive electrode  1.5—2.59/cm2

Negative pole  11.89/cm2

 

14

Coating method

Double layer front and back 3-stage unequal interval coating / second side automatic tracking / continuous coating / field lattice coating

 

15

Roll change mode

Manual

 

16

Substrate running direction

Forward coating, substrate forward and reverse empty foil operation

 

 

(F)Structure introduction of each part:

1、 Unwinding mechanism (double arm double support manual rewinding):


No.

Project

Technical parameter

Notes

1

Installation structure mode

CNC processing thickness of 70 mm integral vertical plate structure, the overall weight of 2.6 tons, increase the ground bearing iron plate, reduce the ground bearing area.

 

2

Main drive motor

Servo motor

 

3

Rubber roller structure

To prevent the tension instability caused by the non separation of tension and ensure the stability of the coating surface density.

 

4

Distance adjustment between die head and coating roller

The servo motor cooperates with the high-precision absolute displacement sensor for closed-loop tracking control. The distance is set through the screen, 1~5000um, the adjustment resolution is 0.1um, and the repeated positioning accuracy is ≤± 0.3um.

 

5

Die head selection

The die lip of Mitsubishi special extrusion head is made of high wear-resistant and corrosion-resistant cemented carbide steel, and the surface is treated with tungsten carbide or chromium nitride. The straightness and flatness are ≤ 1.5 µ M

 

6

Die cavity structure

The multi pressure cavity slit (spray) coating head is adopted, which has strong process adaptability and helps to balance the transverse pressure, so as to make the transverse coating thickness consistent; The upper die of the coating head is designed with a deflection adjusting mechanism, which can adjust the parallelism of the upper and lower die lips

 

7

Pressure monitoring system

Feed pressure monitoring, reflux pressure monitoring, die cavity pressure monitoring; It can monitor the feeding process in real time, and give an alarm when there is blockage, with an accuracy of ≤ 0.001mpa

 

8

Feeding system

Japanese bingshen precision screw pump (2nbl15f (sus+epdm) pump) + precision servo motor, an effective 60L turnover bucket (material container), and has the functions of liquid level detection and liquid level mixing to prevent the sedimentation and overflow of slurry.

 

9

Coating intermittent function

Servo intermittent control valve system is adopted to ensure the stability of coating size.

 

10

Head and tail thinning function

The servo intermittent control valve system can adjust the head and tail thinning time and the stroke of the intermittent valve switch to adjust the head and tail thickness in real time.

 

11

Die head horizontal adjustment function

Adopt precise linear guide rail guidance and manual horizontal adjustment mode, so that the die head can be slightly adjusted ± 10mm in the horizontal position; Ensure the vertical alignment accuracy of the front and back sides

 

12

Matching and assembly of the upper part of the die head and the lower part of the die head

The digital torque wrench is used to ensure the assembly consistency and accuracy of the die head.

 

13

Roller surface treatment

Surface oxidation treatment of metal aluminum roller, surface hardness HRC65; Over roll circular runout ≤ 20 μ m; Surface roughness Ra0.2; Parallelism ≤ 0.1mm;

 

14

Coating roll (steel roll)

The surface is plated with imported hard chromium, with a diameter of Φ 295mm;

 

15

Tension

Full automatic PID closed-loop control constant tension, tension range 1 range 0~50n, tension control accuracy ± 1n

 

16

Stand alone head position

Installation and operation before drying

 

17

Laser alignment function

The laser alignment function is used to manually judge the alignment degree.

 


2、 Head structure (one coat, two coats)



No.

Project

Technical parameter

Notes

1

Installation structure mode

CNC processing thickness of 70 mm integral vertical plate structure, the overall weight of 2.6 tons, increase the ground bearing iron plate, reduce the ground bearing area.

 

2

Main drive motor

Servo motor

 

3

Rubber roller structure

To prevent the tension instability caused by the non separation of tension and ensure the stability of the coating surface density.

 

4

Distance adjustment between die head and coating roller

The servo motor cooperates with the high-precision absolute displacement sensor for closed-loop tracking control. The distance is set through the screen, 1~5000um, the adjustment resolution is 0.1um, and the repeated positioning accuracy is ≤± 0.3um.

 

5

Die head selection

The die lip of Mitsubishi special extrusion head is made of high wear-resistant and corrosion-resistant cemented carbide steel, and the surface is treated with tungsten carbide or chromium nitride. The straightness and flatness are ≤ 1.5 µ M

 

6

Die cavity structure

The multi pressure cavity slit (spray) coating head is adopted, which has strong process adaptability and helps to balance the transverse pressure, so as to make the transverse coating thickness consistent; The upper die of the coating head is designed with a deflection adjusting mechanism, which can adjust the parallelism of the upper and lower die lips

 

7

Pressure monitoring system

Feed pressure monitoring, reflux pressure monitoring, die cavity pressure monitoring; It can monitor the feeding process in real time, and give an alarm when there is blockage, with an accuracy of ≤ 0.001mpa

 

8

Feeding system

Japanese bingshen precision screw pump (2nbl15f (sus+epdm) pump) + precision servo motor, an effective 60L turnover bucket (material container), and has the functions of liquid level detection and liquid level mixing to prevent the sedimentation and overflow of slurry.

 

9

Coating intermittent function

Servo intermittent control valve system is adopted to ensure the stability of coating size.

 

10

Head and tail thinning function

The servo intermittent control valve system can adjust the head and tail thinning time and the stroke of the intermittent valve switch to adjust the head and tail thickness in real time.

 

11

Die head horizontal adjustment function

Adopt precise linear guide rail guidance and manual horizontal adjustment mode, so that the die head can be slightly adjusted ± 10mm in the horizontal position; Ensure the vertical alignment accuracy of the front and back sides

 

12

Matching and assembly of the upper part of the die head and the lower part of the die head

The digital torque wrench is used to ensure the assembly consistency and accuracy of the die head.

 

13

Roller surface treatment

Surface oxidation treatment of metal aluminum roller, surface hardness HRC65; Over roll circular runout ≤ 20 μ m Surface roughness Ra0.2; Parallelism ≤ 0.1mm;

 

14

Coating roll (steel roll)

The surface is plated with imported hard chromium, with a diameter of Φ 295mm;

 

15

Tension

Full automatic PID closed-loop control constant tension, tension range 1 range 0~50n, tension control accuracy ± 1n

 

16

Stand alone head position

Installation and operation before drying

 

17

Laser alignment function

The laser alignment function is used to manually judge the alignment degree.

 


3、 Drying channel (suspension oven)

No.

Project

technical parameter

Remark

1

Oven structure

The first four sections are the main transmission ship structure, and the last six sections are the suspension oven structure.

 

2

Oven length

40 meters (4 meters / section, 10 sections in total)

 

3

Texture of material

Stainless steel, inner tank national standard SUS304, outer tank national standard SUS201

 

4

Driving mode of oven guide roller

The first four sections are the main transmission structure, and the last six sections are the suspension oven

 

5

temperature control

It is divided into the protection control of normal working temperature control and overtemperature monitoring alarm. In case of overtemperature, an audible and visual alarm will appear, and the main heating power supply will be cut off; Each section is completely controlled independently

 

6

Heating way

Electric heating, hot air circulation structure

 

7

Heating power of single section oven

Single section 24kw/4m (maximum starting power)

 

8

Temperature in drying channel

Design Max150 ℃, temperature difference in the area of single section oven ≤ 5 ℃

 

9

Box surface temperature during operation

≤45℃ The cotton filling thickness is 100mm;

 

10

Blowing mode

Upper and lower air blowing, upper and lower air volume can be controlled respectively through valves, which can be fine tuned; The upper and lower air chambers share the heating body

 

11

Exhaust volume control of each section

Independent control and fine adjustment through mechanical valve

 

12

Air nozzle structure

The blowing direction of the first four sections is 30 degrees from the horizontal, and the air nozzle groove is slotted with a special mold. The last five sections are adjustable air nozzle hooks.

 

13

Fan control

AC contactor control

 

14

Heating control

Solid state relay

 

15

Fan material

National standard SUS304 stainless steel

 

16

Solvent recovery system

No, only assist in the installation of interfaces

 

17

NMP solvent concentration alarm

Provide installation interface. (to be quoted separately)

 

18

Air chamber pressure monitoring

None (this function needs to be quoted separately)

 

19

Exhaust air volume

35000 m3 / h max

 


4、 Traction mechanism: (2 sets)


No.

Project

technical parameter

Notes

1

Marching correction

Installed at the outlet of drying channel, automatic EPC control, swing ± 15 degrees, photoelectric sensor

 

2

Tension

Double closed loop speed control mode: 1. Swing roll PID synchronous control 2. Servo motor adjusts tension in closed loop. Tension display table shows tension value 3. The adjustable tension range is 0--300n, and tension fluctuation ≤± 1.5%

 

Tension partition is realized by pinch roll and traction roll

 

3

Installation structure mode

Installation of integral vertical plate of CNC machining center (thickness 30mm)

 

4

Traction roller

160mm steel roller

 

5

Pinch roll

Ø 120mm rubber roller, surface bread EPDM

 

6

Drive motor

The traction roller is driven by Siemens Servo motor + precision reducer

 


5、 Rewinding mechanism (disc type double shaft automatic rewinding):



No.

Project

technical parameter

Notes

1. 

Installation structure mode

Installation of integral vertical plate of CNC machining center (thickness 30mm)

 

2. 

tension

Double closed loop speed control mode: 1. Swing roll PID synchronous control 2. Servo motor adjusts tension in closed loop. Tension display table shows tension value 3. The adjustable tension range is 0--300n, and tension fluctuation ≤± 1.5%

 

3. 

Rectify deviation

Automatic EPC control, stroke 120mm

 

4. 

Maximum winding diameter

Ø800

 

5. 

Winder inflatable shaft

Article 2 (national standard)

 

6. 

Winding motor

The winding power is driven by Siemens Servo motor + precision reducer

 

7. 

Max capacity

600Kg

 

8. 

Roll change mode

Automatic winding and changing function without shutdown

 


6、 Control system:

No.

Project

technical parameter

Notes

1

Master control system

Touch screen, PLC, module, servo system

 

2

Operation mode

Manual, automatic and emergency stop; The whole machine can be operated before and after

 

The coating line speed, coating setting, head and tail thinning setting, fan frequency and temperature setting can be set, displayed and recorded through the touch screen

 

3

Setting range of coating and intermittent length

Coating length 20.0 ~ 3200.0mm

 

4

Alarm condition

Intermittent length: 5.0 ~ 3200.0mm

 

5

Counting function

When the equipment fails, the touch screen will display the corresponding correction screen

 

6

Head and tail thickness adjustment method

Production quantity / length

 


III  Equipment accuracy

1Hardware accuracy

No.

Project

technical parameter

Notes

1

Coating roll (steel roll)

Circular runout ≤ 1.0 um, Ra0.4 straightness ≤ 1.5um

 

2

Deviation correction

±1mm

 

3

Aluminum roller

Circular runout ≤ 20um, straightness ≤ 20um

 

4

Tool adjustment control repetition accuracy

±0.1um

 

5

Temperature control accuracy

±0.5℃

 


2Coating accuracy

Item

Sign

Parameters (30m/min)

A (trailing)

≤ 1mm (related to slurry viscosity and binder characteristics)

B (abnormal head area)

5mm

C (tail abnormal area)

6mm

D (edge effect area)

≤3mm Thickness -10 um

E (length error)

±0.5mm

F (width error)

±0.5mm

M (width error)

±0.5mm

G1 (head thickness)

-5~+5um

G2 (tail thickness)

-5~+5um

H (blank error)

±0.5mm

I (positive and negative alignment error)

±0.5mm

J single surface density (remove areas B, C and D)

Within 1.2%

Length range

L1 (film length)

20.03200.0mm

L2 (intermittent length)

5.03200.0mm

L1 /l2 (coating + intermittent length)

L1 +L2 ≥120mm


3、Measuring method 

A. Measuring area: 3mm at the edge, 5mm at the end and 5mm at the beginning.

B. Measure dimensions Φ 40mm or according to the process requirements of the demander 

IV   Installation and use environment

1) The ambient temperature of the machine head is 20~30 ℃, and the rest is 10~40 ℃;

2) Relative humidity of the machine head: positive RH ≤ 35%, negative RH ≤ 98%, and the rest ≤ 98%;  

 

V   Supporting facilities

1) Power supply: 3Ph 380V, 50Hz, voltage fluctuation range: +8% - 8%; The total starting power of the power supply is 280KW;

2) Compressed air: after drying, filtering and stabilizing, the outlet pressure is greater than 5.0kg/cm2;   


 VI  Device orientation (optional)




Attached table: detailed list of equipment pre acceptance and formal acceptance inspection items (inspection results are attached with acceptance report)

No.

Inspection items

Inspection standard

Inspection method

1. 

Device configuration parameters

Overall dimension of equipment: L (56000mm) *W(4000mm) *H (4000mm)

Tape measure

Oven length: (4m/ section) × 4) + (4m/ section × 6 sections) =40m

ruler

Maximum winding diameter of winding and unwinding: φ 600mm

ruler

Roll width: 750mm

 

2. 

Integrity of equipment function composition

Unwinding part (manual roll change function, tension, deviation correction, inflatable shaft)

Visually check the technical agreement and equipment configuration table

Coating part (base, coating roller, feeding system, domestic manest die)

Oven (circulator, heating system, external auxiliary air duct)

Traction part (travel deviation correction, traction tension, traction roller assembly)

Winding part (manual roll change function, tension, deviation correction, inflatable shaft)

Control system (electrical cabinet, internal wiring, external trunking wiring)

Delivery parts (according to the content of the technical agreement)

3. 

Brand confirmation of standard parts

100% according to the brand of purchased parts specified in the technical agreement

4. 

Safety standards

Mechanical and electrical interlocking, self-locking function, induction protection function;

Visual inspection and operation

Alarm bell prompt in each area before equipment startup;

Operation

Safety warning signs shall be set at dangerous parts such as movement, compression, cut-off and heat source;

visual

Emergency stop switch button, safety rope in internal maintenance area (at least 3 places);

visual

Protective covers for transmission and moving parts;

visual

Oven overtemperature alarm and power-off protection function

operation

5. 

Mechanical accuracy test

Coating roll circular runout ≤ 1.0 μ m; Straightness ≤ 1.5 μ m; Surface roughness Ra0.4,

Dial indicator, special inspection tool

Over roll circular runout ≤ 20 μ m; Surface roughness Ra0.2

Dial indicator

Parallelism of roller passing ≤ 0.1mm (except for roller passing of oven)

Dial indicator, special inspection tool

6. 

Empty belt operation

(operate the base material continuously at a speed of 40m/min for about 500m)

1m/min→10m/min→30m/min Sectional sampling

Tachometer

No wrinkling in the whole area and no scratch on the surface of the substrate

visual

All moving parts operate smoothly without abnormal noise; The transmission belt is free of deviation and wear;

visual

Temperature setting of each section of the oven: normal temperature ~ 150 ℃

Operation and visual inspection

The winding, unwinding and traction deviation correction run smoothly without continuous shaking

Operation and visual inspection

Except for deviation correction and oven, the deviation of the base material of each roller is ≤± 1mm; Deviation of coating roll substrate ≤ 0.5mm

calipers

Tension setting value 5 ~ 300N

Operation and visual inspection

When starting and stopping, the tension fluctuation is ± 5N; Tension fluctuation ± 1n during normal operation;

Operation and visual inspection

7. 

Coating inspection

30m/min coating operation 1200m)

The coating speed is 30m/min, and the coating method can realize continuous and intermittent coating

Parameter setting

The feeding system and pipeline are well sealed without material leakage

visual

The appearance of the coated surface is good, without particles, scratches, exposed foil and poor bulge edge

visual

Density accuracy of one side: weight error ≤± 1.2% (excluding the range of 8mm at the edge)

Micrometer electronic scale

Density accuracy of double-sided surface: weight error ≤± 1.5% (excluding the range of 8mm at the edge)

Micrometer electronic scale

Tailing ≤ 1mm (related to slurry viscosity and binder characteristics)

ruler

Head abnormal area ≤ 8mm

Ruler, micrometer

Tail abnormal area ≤ 6mm

Ruler, micrometer

Edge effect area ≤ 3mm, -10 ~ +5um (slurry viscosity change less than ± 300cps)

Ruler, micrometer

Length error /h blank error: ≤± 0.5mm

ruler

Width error: ≤± 0.5mm

ruler

Thickness of head and tail: -5 ~ +5um

Micrometer

Positive and negative horizontal alignment error: ≤± 0.5mm

Needle, ruler

Longitudinal alignment error of front and back sides: ≤± 0.5mm

Needle, ruler

Temperature control accuracy of single section oven: ≤± 1 ℃

visual

In the horizontal area 10mm above the substrate, the temperature deviation of each point of a single section oven: ≤± 3 ℃

thermodetector

Dryness test, solvent residue: ≤ 1% (constant temperature and humidity space sampling measurement)

Micrometer electronic scale

Equipment utilization rate: ≥ 97% (formal acceptance project)

Operation and test

Product qualification rate: ≥ 98% (formal acceptance project)

Operation and test







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