Automatic Press Rolling Machine/Calender Machine For Lithium Battery Electrode Manufacturing

A.Equipment functions:

1. This set of equipment is connected by a standard roller aligning machine, which is suitable for the high-speed tablet pressing process of continuous pole coating. This set of equipment is mainly composed of a single station unwinding part, a front and rear tension stretching part, an oil pressure roller aligning host part, an online thickness measurement system, and a single station rewinding part.

1) This machine has a mouth shaped integrally cast 45# steel frame, large slider structure, large bearing capacity, small deformation, large rolling force and high rolling speed;

2) By using the constant pressure limited gap rolling method, the battery pole pieces with longitudinal blank and continuous coating can be rolled continuously;

3) Scraper device with roller surface cleaning mechanism;

4) With servo motor unwinding device;

5) Equipped with manual tape receiving platform;

6) With pole slice trimming mechanism;

7) With tension buffer mechanism;

8) It has the function of dust and iron removal by pole brush;

9) With front tension stretching and rear tension stretching devices;

10) The hydraulic system adjusts the lift of the oil cylinder through the human-computer interface touch screen to drive the lift of the roll;

11) Adjust and change the pressure of the roll cylinder through the man-machine interface, control the constant pressure, and the man-machine interface displays the actual pressure;

12) The up and down movement value of the roll is displayed on the man-machine interface screen;

13) The roll surface is plated with hard chromium, and the thickness of chromium layer after grinding is ≥ 120um;

14) Rolling speed ≥ 50m/min;

15) Roll removal device;

16) Laser on-line thickness measurement function;  

B. Applicable material conditions：

1、Incoming material specification (Unit：mm) 

Specifications     Material	incoming	Coil width	Thickness	Internal diameter	Maximum outside diameter	Max capacity
Positive electrode	Coil material	300～850	0.060～0.300	6〞	Φ800	800kg
Negative pole	Coil material	300～850	0.065～0.300	6〞	Φ800	800kg
Positive foil area	——	300～850	0.009～0.035	——	——	——
Negative foil area	——	300～850	0.006～0.035	——	——	——

1. Material system: positive pole: lithium iron phosphate system / ternary system / lithium manganate system; negative pole: Graphite System / silicon carbon system;

2. Coating method: continuous single banner coating, continuous multiple zebra coating, single gap coating, multi gap coating, etc;

3. Foil specification: copper aluminum foil / carbon coated copper aluminum foil;

C. Installation requirements for whole line equipment ：

1) Power requirements: 380V/50hz, power about 72KW;

2) Compressed air: pressure 0.5mpa~0.7mpa, flow: 0.04m3/min;

3) The total weight of the equipment is about 32T. The ground bearing requirements for the installation of the roller machine host are >8T/m2, and the ground bearing requirements for the unwinding and rewinding installation are >2.5 T/m2.

4) Overall dimension of connecting equipment (mm): length * width * height (8000*4720*3200), subject to site layout.

D.Equipment performance index：  

No.	Entry name	Performance index	Remarks
1	Production speed of complete equipment	≥50m/min	Acceptance speed
2	Pole or foil type	Non ferrous precious metals such as copper or aluminum
3	Roll specification	φ800*950mm
4	Maximum rolling force	400T
5	Effective rolling width	850mm
6	Evenness of pole piece after rolling	≤±0.002mm（Required incoming accuracy≤±0.003mm）
7	Press roll layout	Vertical arrangement of two rollers
8	Roll diameter of each guide roll of roller press	≥φ120mm
9	Precision of each guide metal roll of roller press	Diameter: ≤± 0.1mm, roughness: ≤ 0.8 μ m. Circular runout: ≤ 0.04mm/m;
10	Rubber roll accuracy of roller press	Diameter: ≤± 0.2mm, cylindricity: ≤ 0.2mm, radial runout: ≤ 0.3mm/m;
11	Roll diameter of each driving roll of roller press	≥φ120mm
12	Assembly accuracy between metal rolls of roller press	Parallelism: ≤ 0.08mm, levelness: ≤ 0.06mm
13	Assembly accuracy of rubber roll and metal roll of roller press	Parallelism: ≤ 0.2mm, levelness: ≤ 0.1mm (the bearings used for each guide roll and drive roll of the roller press are Japanese NSK or Swedish SKF brand bearings)
14	Safety protection function	Mechanical interlocking and self-locking / safety warning signs / emergency stop switch buttons / protective covers, etc. signs shall be pasted at dangerous places and safety protection devices shall be installed
15	Qualification rate of products produced by equipment	≥99.5%
16	Time rate	＞98%
17	Rolling thickness CPK	≥1.33

E.Configuration of main equipment components：

No.	Name	Brand
1.	Roll material	Cr5； Sinosteel Xingtai roll Co., Ltd. and provide inspection report
2.	Roller bearing	Wafangdian
3.	Roll motor / reducer	Dongli, Guomao
4.	PLC	Panasonic, Omron
5.	Touch screen	Proface, Kunlun state
6.	Servo motor	Mitsubishi, Huichuan
7.	Linear guide rail	HIWIN
8.	Other bearings	NSK
9.	Solenoid valve	SMC、CKD
10.	Electrical components	Schneider, Chint
11.	Electric proportional valve	SMC、CKD
12.	Deviation correction control system	Puliyuan, dongdeng
13.	Frequency converter	Mitsubishi, Danfoss
14.	Main roll drive motor	Dongli, Guomao
15.	sensor	Omron、KEYENCE
16.	Coil diameter detection ultrasonic sensor	Banner、Beijiafu
17.	Pneumatic components	SMC、CKD
18.	Light sensor and displacement sensor	Omron、KEYENCE
19.	Tension controller	kortis
20.	Laser thickness gauge	Dacheng, Shuangyuan
21.	Hydraulic system	Vick hydraulic, Aili

 

F.Equipment matching: 

The pole strip continuous rolling production line is mainly composed of single station unwinding, edge cutting, dust removal device, oil pressure roller aligning machine, front and rear tension stretching device, laser online thickness measurement system, single station rewinding, electric control system, hydraulic system, suspension operation station, deviation correction device, electric control cabinet, etc.