Automatic Slitting Machine For Lithium Battery Electrode Making

1、 Equipment introduction:

1.1 Equipment function and principle introduction:

Main functions:  Auto slitting machine focuses on the design and construction of lithium battery industry. The equipment is mainly used for the subsequent process of rolling, and the rolled pole slice is divided into several small rolls according to the customer's process.

Mechanism composition: the main components of slitting are divided into unwinding mechanism, deviation correction mechanism, belt connecting platform, traction mechanism, slitting mechanism, powder brushing and dust removal mechanism, tracking roller mechanism, tablet pressing mechanism, roller pressing mechanism and winding mechanism.

Cutting principle: the full closed-loop constant tension unwinding system and active winding taper tension system are adopted, with automatic deviation correction function, and the speed of the cutter is adjustable. The whole roll of pole pieces is divided into several small rolls according to the process requirements through the transmission dust removal mechanism.

1.2 see the attached drawings for the equipment principle (for reference only)

1.3 Introduction to equipment organization:
Unwinding tension system:
This equipment adopts passive unwinding, and the tension is mainly controlled by a set of closed-loop tension control system. The pole piece passes through the tension detection roller, and after the calculation and setting results of the tension control system, the change of coil diameter does not affect the slitting effect, thus ensuring the stability of tension output. Unwinding has the function of correcting deviation. Even if the incoming material is not neatly wound within a certain range, it can be cut normally through automatic correction. The feeding mechanism adopts the top-to-top feeding method, which is humanized and easy to operate. Through the feeding car, the labor intensity is reduced and the operation safety is improved.

Tool rest structure:
It adopts Xicun type tool rest structure, and the tool diameter of 100mm or 130mm can be customized according to customers. The speed of the upper and lower knives is adjustable, and the combined spacer configuration. The lower knife adopts the flat knife design, and the upper knife sleeve adopts the adjustable knife rotation structure.

Transmission mechanism:
The transmission of this equipment mainly uses synchronous belt and synchronous belt wheel planetary reducer to realize the consistency of the speed of roller passing and guide axis. The transmission system adopts Mitsubishi servo motor. The driving rollers and components are strictly required to meet the dynamic balance requirements of less than 10 grams, which greatly reduces the vibration during the operation of the equipment and the wear of the transmission mechanism. The roll surface adopts mirror and hard anode hardening treatment. The hardness is strictly required to be about 25 degrees, which is not easy to deform, and the roll surface runout is required to be within plus or minus 0.02mm. Even if the equipment is too old, the precision of the power transmission mechanism of the equipment can be guaranteed.

Roller mechanism:
The roller pressing mechanism is mainly a metal roller with a certain hardness on the surface of multiple degrees of freedom connected by a shaft. Its main function is to ensure that the pole piece will not arch during the winding process and flatten the wavy edges produced by the strip during slitting. The pressure roller adopts the integral design, and the performance effect is better than the split design.

Electrode roll diameter tracing mechanism:
The tracking roller mechanism is mainly to ensure the evenness of the pole winding. A group of opposite edge detection optical fibers are used up and down the mechanism to detect the size and position of the coil diameter, and accurately control the distance between the tracking roller and the coil diameter. The tracking structure is driven by the motor, and the tracking roller is driven to move smoothly on the guide rail through the reducer and the gear rack connection mechanism to achieve a stable control effect. The main design intention of this mechanism has two points. The first is to make the over roll before winding as close to the winding shaft as possible, so as to reduce the swing amplitude of the material coil when entering the winding, so as to increase the uniformity of winding. The second point is mainly to detect the size of the winding diameter, so as to provide a calculation basis for the speed of the winding motor to match the belt walking speed.

Powder brushing and dust suction mechanism:
The equipment is composed of a professional industrial 2.2kW high-power turbine vacuum cleaner, and a knife set dust suction and upper and lower pole piece powder brushing dust suction mechanism, which can timely absorb the dust left on the pole piece, improve the safety of battery production and use, reduce the damage of dust particles in the production workshop to the health of employees, and improve the superiority of the working environment.

Winding mechanism:
This mechanism is mainly used for the winding of the strip after slitting. The electrical is mainly a set of Mitsubishi servo, two groups of SMC proportional valve pneumatic tension control devices, high-precision winding slip shafts up and down, which are combined by concentric torsion connecting rings. The winding shaft is locked by the cylinder pressure bar mechanism, which can better reflect the humanization of the design. The effect is more stable and convenient in operation.

2、 Configuration list of main parts and components of equipment:

3、 Technical parameters and factory configuration of equipment:

4、 Main functions of the control system:

5、 Commissioning tools:

6、 External dimension and quality of equipment:

 Size: 2450×2150×1850（L×W×H） weight:3T

7、 Installation environment and supporting facilities requirements

1) Ambient temperature: =25 ℃ ± 5;

2) Relative humidity: 45 ≤ RH;

3) Ensure that the air on site is dry and unblocked;

4) Power supply: 380V, three-phase five wire system 50Hz, voltage fluctuation range: +8% - 8%;

The total power of the power supply is not less than 15KW;

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