Compact Roll to Roll Tape Casting Machine (Max. 300mm Width) with Drying Oven
1. Equipment specifications:
1) Substrate thickness: Aluminum foil: 0.012--0.030mm, Copper foil: 0.008-0.030mm
2) Substrate width: Aluminum foil: ≤320mm , Copper foil: ≤320mm
3) Maximum wet coating thickness: 80--400µm (under the condition of slurry viscosity permitting)
4) The maximum width of coating: 300mm, the maximum width of coating roller: 360mm
5) Mechanical traveling speed: 0.5-8M/min (maximum speed)
6) Coating speed: 0.5-1.0M/min (different according to different slurry)
7) The total length of the oven: 1 meter oven (integrated)
2. Equipment performance
1 ) Coating method: Continuous coating
2) Coating precision:
2.1. Accuracy error of dry thickness: single-sided cathode: ±2.5µm , anode ±2.5µm (cross-sectional measurement 4-5 points, vertical section measurement spacing is 100mm).
2.2. Alignment error of front and back coating: ≤±1.0mm
2.3. Average length error: ≤±1.0mm
2.4. Average width error: ≤±1.0mm
Note: The first and second indicators above should have the best effect when the slurry conditions (viscosity, particle size, uniformity, etc.) match the settings of the equipment parameters.
- Core inner diameter: 3 inches with inflatable shaft
- Tension control: constant tension of counterweight
- The accuracy of the correction controller: ±0.01mm; the accuracy of correction: ±1mm
- The operator operates the coating mechanism from the front
- Drying form:
(1) Hot air drying: hot air circulation (upper and lower air supply);
(2) Heating method: electric heating 800W×6=4.8KW;
(3) Heater; SUS304 Fever spiral catheter
(4) Air supply volume: 1000 М³/h ×1 section=1000 М³/h (air volume is independently adjustable)
(5) Exhaust air volume: 1000 М³/h
8) Oven length: 1 meter (integrated type)
9) Oven material: inner side is SUS304 material in 1.0 thickness, outer side is SUS201 material in 2.0 thickness
10) Oven temperature: room temperature-150ºC can be adjusted independently, temperature control accuracy <±5ºC
3.Process flow
The electrode substrate placed on the unwinding device enters the floating roller tension system after automatic correction. After adjusting the unwinding tension, it enters the coating head, and the electrode slurry is coated according to the setting program of the coating system. The coated wet electrode enters the oven to be dried by hot air. After drying, the tension of the electrode is adjusted by the tension system, while the winding speed is controlled to synchronize it with the coating speed. The electrode is automatically corrected by the correction system to keep it in the center position, and the winding device is used for winding.
- This coating machine includes the following parts
1 ) Unwinding mechanism (with automatic correction device)
This device is controlled by a frequency converter and an automatic correction system. The coil is pulled out by the aluminum roller and enters the floating tension roller device after automatic correction. The device transfers the tension change during operation to the tension controller through the sensor, so as to achieve constant tension.
2 )Tension mechanism of coating float roller
This mechanism is composed of rollers, position sensors, counterweight rollers, etc. The floating roller tension system absorbs the instantaneous changes of the storage space due to acceleration, deceleration, unwinding and start-up of the reel, as well as space fluctuations during coating, so as to minimize the impact on coating. The floating roller is installed on the sprocket, the tension of the substrate is adjusted by the counterweight, so that the substrate maintains a constant tension during the coating process, and the unwinding speed and the coating speed are controlled to be synchronized.
3) Coating mechanism
This machine is controlled by a frequency converter, and is equipped with high-tech automation equipment of precision machinery and optical-mechanical-electrical integration. It is composed of feeding trough, coating roller, doctor roller, drive motor, precision bearing and other components. Among them, the bearings of the drive motor, reducer and coating roller adopt precision bearings.
The coating method has the function of continuous coating, and the coating thickness can be adjusted by adjusting the blade gap.
- Drying system
The drying system is composed of heaters, fans, exhaust ducts and vents, insulation boxes, inspection doors, etc. The insulation box has a section of 1 meter in total. The inner and outer parts of the box are made of stainless steel poles. The box body is a thermal insulation structure to prevent heat loss and safe operation. After the coated wet pole pieces enter the drying box, the box adopts the upper air drying method for high efficiency After drying, the dry air is heated by a fan and heated by a hot air heater, and then sent into the oven, and blown evenly to the wet coating through the air holes, and the dried air is discharged to the outdoors by the exhaust fan.
- Take-up mechanism
This device is composed of oven outlet, floating roller tension mechanism, take-up drive device and take-up tension sensor system, etc., so that the pole piece maintains a constant tension during the coating and drying process, and controls the rewinding speed and coating speed to keep pace.
6 ) Winding mechanism
This device is composed of frequency converter, winding shaft, automatic correction system, etc. During the winding process, the device can make the winding shaft track the position of the pole piece and keep the edges of the winding pole piece neat.
7 ) Coating and drying automatic control system
* Coating control system:
In the coating process of this machine, the linear speed of the coating roller, the coating speed, and the number of coating sheets are manually set
* Temperature and control:
This system consists of a temperature regulator, thermocouple, heater, relay, etc., to measure and control the internal temperature of the drying oven.
5. Acceptance method:
Select several representative battery specifications for coating and acceptance of setting data.
The buyer's own power supply: 380V 50HZ Rated power: 8KW Air source: 0.5-0.8Mpa
6. Appearance and color follow the supplier's corporate standard (black).
Unwinding device: Using a 3 inch mechanical expand axle to fix the foil material;
Coating hopper: Using a Coating hopper like funnel, the material is 304 stainless steel, the coating hopper width can be adjusted;
Coating roll and scraper: Using 40Gr finish machining, the gap can be adjust, adjustable range: 0.050mm-0.500mm
Heating box: Three warming area in the coating machine, all the warming area can be independently adjusted and the circulate wind is designed.
Exhaust emission: The exhaust produced in coating process can be let off from a 100mm pipe(the pipe should be prepared by user), and the diameter of the equipment exhaust piping connector is 100mm.
Rewinding: Launched by single phase alternating current machine, and the speed can be adjusted, adjustable range: 0-3m/min.
Rewinding rectify deviation: Photoelectricity rectify deviation system;
Control system: Be equipped with starting, cut off, scram press-button.
9. Others:
With adjustable horizontal foot margin.
Color: Grey
Accord with national safety standard.
Shipping with operating manual and equipment maintenance manual.
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