Products Description
Intermittent experimental coating machine is a three-roller transfer coating equipment. It can carry out continuous and intermittent coating, which is convenient to be applied to the equipment for surface coating process of various substrates. Especially used in the lithium ion battery industry. The equipment is designed to be convenient for researchers to use while meeting the requirements of coating accuracy and consistency, which is no different from production. The drying effect is excellent, and it is an ideal choice for the research and development and small tests of lithium ion batteries, super capacitors, nickel batteries and other secondary batteries.
Characteristic
*Substrate tension control, stable belt, configuration of correcting device;
*Hot air oven, double-sided airing on the top and bottom, good drying effect;
*Three-roll transfer coating with a wide coating window;
*Comma scraper metering, with precision adjustment mechanism, to achieve high coating accuracy;
*PLC control, touch screen operation, easy to use;
*Optional solvent recovery treatment device;
Technical Parameters
Main equipment configuration
| NO. | Item | Technical parameters |
| 1. | Suitable for system | Ternary, lithium iron phosphate, lithium cobaltate, lithium manganate, graphite, silicon carbon and other system battery positive and negative electrodecoating process |
| 2. | Coating type | Continuous coating |
| 3. | Oven section number | 1 section 1 meter oven |
| 4. | Coating speed | 0~0.5m/min |
| 5. | The substrate thickness | Aluminum foil (Al) : 8 ~ 30um copper foil (Cu) : 8 ~30um |
| 6. | Design width of roll surface | 330 mm |
| 7. | Ensure coating width | within 280mm |
| 8. | Coating roller, cots | Φ120mm |
| 9. | Presser roll | Φ80mm |
| 10. | Precision coating | ±3um |
| 11. | Weight precision(mg/cm2) | Coating center value±1.0% |
| 12. | Suitable for paste viscosity | 2000~12000 (mPas) |
| 13. | One side dry coating thickness range | 20-200μm |
| 14. | The solvent properties | Oily solvent NMP (s.g=1.033,b.p=204℃) |
| Aqueous solvent H2O/NMP(s.g=1.000,b.p=100℃) | ||
| 15. | Suitable for solid content range | 20~85% |
| 16. | Coating size accuracy(mm) | L≤±1 、W≤±0.5 |
| 17. | Precision of front and back alignment (mm) | L≤±1 、W≤±0.5 |
Integral unwinding, head mechanism:
| NO. | Item | Technical parameters |
| 1. | Roller mounting structure | Install the steel frame firmly |
| 2. | Roll surface treatment | Metal aluminum roll surface oxidation |
| 3. | Tension control system | Automatic control constant tension, tension range 0~50N, servo motor control |
| 4. | Rectify way | Automatic EPC control, stroke 50mm |
| 5. | Winding mode | The material coil is fixed with 3-inch air expansion shaft and air expansion shaft; |
| Single air expansion axis for unwinding | ||
| 6. | Maximum unwinding diameter | Ф250mm |
| 7. | Maximum load bearing of gas expansion axis | 80Kg |
| 8. | The number of air-expanding shafts | 1 |
| 9 | Main drive motor | Servo motor |
| 10 | Roll surface treatment | Metal aluminum roll surface oxidation |
| 11 | Doctor blade | Double-sided comma doctor blade |
| 12 | Coating roller (steel roller) | Hard chrome plating |
| 13 | Back roll (cots) | The surface is covered with imported epdm |
| 14 | Adjust blade clearance height | Manual setting |
| 15 | Single head position | Installation and operation before drying path |
Oven
| NO. | Item | Technical parameters |
| 1. | Oven structure | Double layer independent heating, upper and lower arrangement |
| 2. | Oven length | 1m/section |
| 3. | Material | SUS304 stainless steel |
| 4. | Temperature control | Divided into normal working temperature control, overtemperature monitoring and alarm protection control, and cut off the main heating power supply; The paragraphs are completely independent of each other |
| 5. | Heating Mode | Electric heating, hot air circulation structure |
| 6. | Single section oven heating power | 6KW |
| 7. | Inside temperature of Oven | Design Max. 150℃, single section oven temperature difference ≤±2.5℃ |
| 8. | Blowing way | Upper and lower air blowing, upper and lower air chamber share heating body |
| 9. | Structure of the wind | Special mold is used to cut the air nozzle groove |
| 10. | Fan control | Contactor control |
| 11. | Heating control | Solid-state relay |
| 12. | The fan material | SUS304 stainless steel |
| 13. | Solvent recovery system | Optional |
Winding mechanism: it has the same function as unwinding, as follows
| NO. | Item | Technical parameters |
| 1. | Rectifying marching | Installation of drying outlet |
| 2. | Tension | Automatic control of constant tension |
| 3. | Installation structure | Install the steel frame firmly |
| 4. | The number of winding gas expansion axis | 1 One-armed winding |
Control system
| NO. | Item | Technical parameters |
| 1 | Master control system | Touch screen, PLC, servo system |
| 2 | Mode of operation | Manual, automatic, emergency stop; The whole machine can be operated before and after |
| 3 | Alarm condition | When the device fails, the touch screen will display the corresponding correction screen |
Hardware accuracy
| NO. | Item | Technical parameters |
| 1. | Scraper | Circular jump ≤±1.5um, Ra0.4, straightness ≤±1.5um |
| 2. | Coating roller(steel roller) | Circular runout ≤±1.5um, Ra0.4 straightness ≤±1.5um |
| 3. | Rubber roll | Circle runout ≤10um, straightness ≤10um |
| 4. | Rectifying deviation | ±0.2mm |
Installation environment requirements
1)The ambient temperature of the machine head is 25~30°C, and the rest is 10~40°C;
2)The relative humidity of the machine head is RH ≤ 35%, the negative electrode RH ≤ 98%, and the rest ≤ 98%;
Supporting facilities
1)Power supply: 3PH 380V, 50HZ, voltage fluctuation range: +8%~–8%; power supply total power 10KW;
2)compressed air: after drying, filtering and voltage regulation: the outlet pressure is greater than 5.0kg/cm2
