1. Equipment Overview

The coating machine is a newly designed production coating machine developed by our company to meet the high precision and high-quality requirements of domestic lithium battery manufacturers. This equipment features a high-precision vertical structure, stable operation, and a central controller with high-speed computing capabilities. It incorporates modular design, integrating digital module control, analog control technology, and integrated control technology. Advanced tension PID calculation automatically maintains constant coating tension output control. The scraper uses high-precision displacement sensors and servo motors for automatic adjustment.

2. Equipment Features

2.1 Coating Mode: Continuous coating. 

2.2 Precision adjustment of the scraper mechanism: Servo motor drives high-precision lead screws to move and lift the scraper, with an adjustment precision of 0.002mm, two sets in total.

 2.3 Precision adjustment of the rubber roller movement mechanism: Imported servo motor drives high-precision lead screws to move the rubber roller, with an adjustment precision of 0.01mm, two sets in total.

 2.4 Precision deviation correction control throughout the entire belt travel: Deviation correction for unwinding and rewinding, two sets in total. 

2.5 High-precision constant frequency tension control throughout the belt travel: Constant tension in the unwinding area and the rewinding area, three sets in total.

 2.6 Oven circulation wind design saves energy: Independent air door adjustment for blower and exhaust fan, one section in total. 

2.7 Fully stainless steel oven structure: Stainless steel box, stainless steel heating tube, stainless steel fan, stainless steel frame, stainless steel sealing plate, length 1 meter. 

2.8 The roller uses large diameter mirror aluminum rollers, resistant to wear for more than five years: Imported roller bearings. 

2.9 Powerful and comprehensive control system: Dangerous operation protection, alarm prompts, fault maintenance assistance.

3. Operation Process

The electrode substrate placed on the unwinding device is automatically corrected for deviation and the PID tension automatically adjusts the unwinding tension before entering the micro gravure coating head. The electrode is coated according to the set program of the coating system. The wet electrode enters the oven for drying by circulating hot air. After drying, the electrode's tension is adjusted by the tension system, while controlling the rewinding speed to synchronize with the coating speed. The electrode is automatically corrected for deviation by the deviation correction system to maintain the set position and is then rewound by the rewinding device.

4. Technical Parameters

1.1 Dimensions:

• Installation space required for one section of the box: L2500mm x W1400mm x H1550mm, box length 1000mm.

1.2 Power Supply Configuration:

• AC380V five-wire, three-phase main line using 15mm² or above, neutral line 6mm², ground line 4mm², total power switch 50A.

1.3 Compressed Air Source Configuration:

• Dry gas ≧0.7MPA, 20L/min.

1.4 Equipment Power:

• Oven: Start-up power ≈12KW, average operating power ≈7KW/H.

• Oven start-up power ≈13W (heating tube 12KW, fan 0.75KW).

1.5 Normal Operating Substrate Range:

• Aluminum foil 10um~25um.

• Copper foil 6um~15um.

1.6 Effective Coating Width:

• Coating width ≤200mm.

1.7 Normal Single-side Coating Thickness Range:

• Thickness can be chosen from 1um~30um.

1.8 Normal Coating Accuracy:

• Single-side coating thickness accuracy ≤1~2um.

1.9 Coating Method:

• Micro gravure coating, reverse kiss continuous coating, with optional middle gap (size customizable).

1.10 Suitable Slurry Viscosity:

• 500~2000 Cps.

1.11 Operating Speed:

• Normal coating speed 0.5m/min3m/min; mechanical speed 1m/min6m/min.

1.12 Drying Temperature Range:

• Room temperature to 80°C, temperature deviation ≤±3°C.

1.13 Deviation Correction Accuracy for Unwinding and Rewinding:

• ≤±0.5mm.

1.14 Weight:

• 2T.

5. Equipment Component Structure

5.1 Unwinding Mechanism

• Unwinding base frame: Rectangular tube welding, CNC machining center plane milling, drilling, and painting.

• Unwinding stand plates: CNC machining center plane milling, drilling, and surface electroplating.

• Linear bearings: Imported bearings.

• Pneumatic components: Airtac.

• Unwinding motor: Tension-specific variable frequency motor.

• Air expansion shaft: Taiwan joint venture, single unwinding structure, maximum unwinding diameter Ø250mm, maximum load 200KG.

• Deviation correction controller: Yan Ke Technology.

• Floating roller mechanism: Precision parts, precision potentiometer, Taiwan low friction cylinder, imported constant pressure regulator.

• Pressing mechanism: Cylinder-driven aluminum alloy pressing bar, Airtac cylinder, one set.

• Operation panel: Pause, stop, coating, forward unwinding, reverse unwinding, pressing functions.

5.2 Coating Mechanism

• Coating head base frame: Rectangular tube welding, CNC machining center plane milling, drilling, and painting.

• Coating head stand plates: CNC machining center plane milling, drilling, and surface electroplating.

• Coating roller and rubber roller seats: CNC machining center plane milling, drilling, and electroplating.

• Auxiliary rollers: Precision machining, electroplating >250um, round runout ≤1.5um, Ø160mm, roller surface length 250mm.

• Rubber roller: Precision machining, coated with imported EPDM rubber, round runout <5um, Ø160mm, roller surface length 250mm.

• Auxiliary roller and rubber roller bearings: NSK from Japan.

• Reducer: Zhuo Lan, 1:100.

• Servo motor: Mitsubishi from Japan.

• Scraper: Imported from Japan, servo motor automatic adjustment of scraper height.

• Scraper adjustment lead screw: Mitsubishi servo motor drive from Japan.

• Scraper dial indicator: Imported from Japan.

• Push linear bearing: NSK.

• Push lead screw: SBI.

• Push servo: Mitsubishi from Japan.

• Over-roller: Large-sized mirror aluminum roller.

5.3 Oven Mechanism

• Box body: Stainless steel welding, inner and outer layers with insulating material filling, external temperature less than 45°C.

• Heating tubes: 12KW per zone, nine heating tubes, all stainless steel housing.

• Blower: 0.75KW per zone, air volume 850m²/h, energy-saving circulation wind design, air inlet adjustment damper, circulation wind adjustment damper, fresh air adjustment damper, frequency converter speed adjustment.

• Exhaust fan: One 0.75KW fan, frequency converter speed adjustment, maximum exhaust volume: 850m²/h.

• Heating tube control: Solid-state relay control, energy-saving configuration.

• Temperature control instrument: Intelligent temperature adjustment.

• Exhaust duct: Stainless steel welding, inner and outer layers with insulating material filling.

• Over-roller in the box: Active over-roller.

• Box support frame: Full stainless steel square tube welding.

• Support frame sealing plate: Full stainless steel, easy assembly and disassembly structure for blower area.

5.4 Rewinding Mechanism

• Air expansion shaft rewinding structure:

• Rewinding base frame: Rectangular tube welding, CNC machining center plane milling, drilling, and painting.

• Rewinding stand plates: CNC machining center plane milling, drilling, and surface electroplating.

• Linear bearings: Imported bearings.

• Pneumatic components: Airtac.

• Rewinding motor: Variable frequency motor.

• Air expansion shaft: Taiwan joint venture, single rewinding structure, maximum rewinding diameter Ø250mm, maximum load 200KG.

• Deviation correction controller: Yunyou Technology.

• Floating roller mechanism: Precision parts, precision potentiometer, Taiwan low friction cylinder.

• Pressing mechanism: Cylinder-driven aluminum alloy pressing bar, Airtac cylinder, one set.

• Operation panel: Pause, stop, coating, forward rewinding, reverse rewinding, pressing functions.

5.5 Control Cabinet System

• Touch screen operation interface: Kunlun Tongtai.

• PLC central control system: Mitsubishi from Japan.

• Tracking optical fiber: Omron from Japan.

• Displacement sensor: Panasonic from Japan.

• Servo driver: Mitsubishi from Japan.

• Temperature control instrument: Omron from Japan.

• Limit sensor: Omron from Japan.

• Frequency converter: Inovance or Jingyan.

• Deviation correction system: Two sets.

• Heating system: Electric power regulator constant current control mode.

• Low voltage electrical components: Schneider from France, Zhengtai, a batch.

5.6 Coating Method Simplified Diagram:

1. Loading Diagram:

2. Substrate Running Diagram:

6. Equipment Spare Parts Brands

7. Random Delivery List

7.1 Two heating tubes. 7.2 One operation manual for the coating machine (content: operation process of the coating machine, precautions, functions, maintenance explanations).

8. Installation Environment Requirements

1. Relative Humidity: 10%~80% HR.

2. Power Supply: Three-phase 380V, 50HZ, more than 50A power, voltage fluctuation range: +10%~-10%.

3. Compressed Air: After drying, filtering, and stabilizing pressure: Air pressure greater than 6.0KG/cm².

4. Ground Connection: Protective grounding.

5. The buyer is responsible for installing the electrical and air supply requirements designed by the supplier to the location close to the coating machine on-site, requiring each equipment to have an independent power air switch and air supply interface.

6. External air intake and exhaust ducts and exhaust fans for the coating machine are provided by the buyer.

7. During the debugging of the equipment at the buyer's site, the buyer will provide the power, substrate, and slurry for free and will arrange relevant operators, maintenance personnel, and technical personnel to cooperate.