Quick answer: The photovoltaic ribbon wire drawing and tinning integrated production line is a high-efficiency manufacturing system for solar ribbon, drawing copper down to a final thickness around 0.03 mm and coating it in a continuous in-line tinning stage. It serves ribbon production for module lines from 5 MW to 1 GW. Ribbon is the vascular system of a module: it carries every amp the cells produce out to the junction box, and its cross-section, coating thickness and surface cleanliness decide joint resistance and long-term reliability. Making it in one integrated line rather than buying drawn wire and tinning it separately is what keeps the coating consistent along the length, which is the property that shows up as yield at the stringer.
PV Module Manufacturing · by Jerry, Ooitech
Product Introduction
The photovoltaic ribbon wire drawing and tinning integrated production line is a high-efficiency manufacturing system designed for producing round ribbon and flat ribbon used in solar panel module assembly. This integrated solution combines fine wire drawing, induction annealing, flux coating, hot tinning, and automatic winding into one streamlined process, eliminating intermediate steps such as separate pay-off and rewinding stations.
The line is engineered for full automation with conveyor feeding and automatic material change capability, serving as the foundation for unmanned operation. With a maximum mechanical speed of 450 meters per minute, the production capacity reaches twice that of traditional equipment, allowing manufacturers to cut equipment count and workshop space by half for the same output.
Key breakthroughs include induction heating annealing (solving the traditional issues of electrical contact wear and slippage), nano-material tinning scrapers with 10x longer service life, automatic tin replenishment, and servo-controlled winding for true unmanned operation.
Technical Specifications
| Parameter | Specification |
|---|
| Inlet Wire Diameter | Φ0.8-1.2mm |
| Outlet Wire Diameter | Φ0.12-0.30mm |
| Tin Coating Thickness | 0.01-0.03mm per side (controllable) |
| Maximum Mechanical Speed | 450M/min |
| Minimum Acceptance Speed | 300M/min |
| Production Lines | 2 lines |
| Maximum Air Knife Pairs | 2 pairs |
| Tin Bath Depth | 180mm |
| Fine Drawing Motor | 4KW, ratio 5:1 |
| Annealing Traction Motor | 400W |
| Winding Traction Motor | 400W |
| Winding Servo Motor | 1KW servo |
| Wire Arrangement Servo | 400W servo |
| Tin Coating Take-up | 5-10 KG/Max |
| Number of Dies | 24 dies (double head) |
| Drawing Reduction Rate | 15% (dies 1-23), 4% (die 24) |
| Tin Bath Heating | 6KW titanium tube electric heating |
| Cooling System | Water cooled with 2P air conditioning chill air |
Technical Advantages
Integrated Process Design
Direct feed from fine wire drawing machine to tinning unit, eliminating separate pay-off and rewinding stations
Conveyor belt and control integration enables automatic material change
Foundation built for unmanned operation environment
Parallel two-line layout in one machine reduces footprint
Advanced Induction Annealing
Induction heating replaces traditional electrical contact annealing
Eliminates contact wear and slippage problems
More uniform annealing of copper substrate
Real-time current tracking with servo wheel traction for stable yield strength
Inert gas protection with adjustable flow control
High Performance Tinning System
Nano-material tin scraping wheel with 10x service life improvement
Non-stick to dross with 50% lower resistance
Timed pneumatic dross removal reduces labor intensity
Automatic tin replenishment without manual intervention
Circular air knife with dual intake adjustment valves for uniform tin layer
Precision sliding table and lifting module with stepper motor numerical control
Servo Winding Technology
Swing arm numerical control tracking with automatic servo take-up
Pneumatic shaftless tightening for automatic spool loading and unloading
Automatic turntable, pneumatic wire pulling, automatic hooking and cutting
Dual shaft design with anti-tangle baffle
1000W winding motor with 15KG load capacity
High Speed Production
450M/min maximum speed, double the capacity of conventional equipment
Reduces equipment count by half
Saves workshop space and operator labor
Variable speed control from 150-450M/RPM
Product Applications
This production line is widely deployed in the photovoltaic ribbon manufacturing industry, supporting the production of interconnect ribbons used in solar cell stringing and module bussing operations. The output ribbons are suitable for various solar cell technologies including:
Conventional crystalline silicon solar modules using PERC, TOPCon, and HJT cells
Multi busbar (MBB) solar module production lines
Shingled and high efficiency module manufacturing
Half-cut cell module assembly
Thin film and flexible solar panel interconnection
Round ribbon production for advanced module technologies
Flat ribbon production for tabber stringer machines
Typical end users include photovoltaic ribbon manufacturers, copper wire processing factories, solar material supply enterprises, and integrated solar module production facilities seeking to expand into upstream ribbon manufacturing.
Equipment Composition
| Unit | Quantity |
|---|
| Double Head 24 Die Fine Drawing Machine | 1 set |
| Double Head Induction Annealing Machine | 1 set |
| Double Head Hot Dip Tinning Machine | 1 set |
| Double Head Turntable Automatic Winding Machine | 1 set |
Maintenance and After Sales Service
Warranty coverage from the date of shipment includes one year for mechanical parts and one year for electrical components. Long-term spare parts supply and technical support are guaranteed throughout the equipment lifecycle. After the warranty period, on-site service is available with applicable travel, labor, and parts replacement costs. Operator training, installation guidance, and process commissioning support are provided to ensure stable production output and consistent ribbon quality.
