Automatic Shingled String Cell Terminal Head Welding Machine
STW-60A Series Overview
The STW-60A Automatic Shingled String Cell Terminal Head Welding Machine is a high-precision automated equipment designed specifically for welding ribbon busbars onto both the positive and negative terminals of solar module cell strings. Developed and manufactured by Ooitech, this machine delivers reliable, consistent welding quality for shingled solar panel production lines.
The complete system integrates multiple functional modules including a transfer unit, dual-side (A-side and B-side) fiber optic sensor detection and mechanical positioning units, dual ribbon processing units, dual infrared welding systems, a temperature control system, an unloading mechanical arm, and a finished product collection box. This fully automated workflow eliminates manual intervention and ensures high-throughput, low-breakage production.
How It Works
The working principle is straightforward and efficient. The solar cell string is first transferred onto the conveyor belt and moved to the A-side positioning unit, where fiber optic sensors and mechanical fixtures precisely position the string. The A-side ribbon handling unit then places the busbar ribbon onto the positive lead of the cell string and secures it in position. The infrared light welding system completes the welding on the positive terminal. Next, the transfer unit moves the cell string to the B-side, where identical positioning, ribbon placement, and infrared welding operations are performed on the negative terminal. Once both terminals are welded, the unloading mechanical arm picks up the completed cell string and places it into the finished product box.
Expansion-Ready Design
The STW-60A features reserved expansion ports for seamless docking with upstream and downstream equipment, including tabber stringers, string inspection systems, and layup machines. This makes it an ideal component in a fully integrated solar panel production line.
Technical Parameters
STW-60A Specifications
Below are the detailed technical specifications for the STW-60A series automatic shingled string cell terminal head welding machine:
| Parameter | Specification |
|---|
| Product Model | STW-60A / 80A / 180A |
| Soldering Capacity | 20s/String (based on 166mm cell) |
| Compatible Cell Size | 158.75mm / 166mm / 210mm |
| Cell Thickness | 0.15 - 0.25mm |
| Ribbon Size | 6-8 x 0.12mm |
| Flux Spraying Method | Immersion |
| Number of Glue Heads | 2 pcs |
| Welding Method | Infrared heating welding |
| Positioning System | Mechanical + fiber optic sensor |
| Breakage Rate | Less than or equal to 3 permille (A grade cells) |
| Cell String Minimum Length | 600mm |
| Cell String Maximum Length | 2000mm |
| Electrical System | PLC + touch screen + servo + module |
| Human-Machine Interface | Touch screen display, user-friendly interface |
| Fault Alarm | Real-time fault alarm system |
| Device Color | Main body traffic white |
| Power Supply | Three-phase five-wire, 380VAC / 50Hz |
| Rated Power | 6KW |
| Air Source | 0.6 - 0.8 MPa; 300L/min; Inlet pipe diameter: 12mm |
| Equipment Dimensions (L x W x H) | 5100 x 1715 x 1940mm |
| Software | Lifetime free upgrades |
Main Replacement Parts
The following table lists the key consumable and replacement parts for routine maintenance:
| Part Name | Type | Replacement Cycle |
|---|
| Nozzle | -- | 30 days |
| Belt | Teflon | 60 days |
| Air Filter | AFC30 | 90 days |
Technical Advantages
Core Strengths of the STW-60A
Dual-Side Infrared Welding System: Independent A-side and B-side infrared heating welding units enable complete positive and negative terminal welding in a single pass, maximizing throughput and consistency.
High-Precision Positioning: The combination of mechanical fixtures and fiber optic sensor detection ensures accurate and repeatable cell string alignment, critical for achieving reliable solder joints.
Ultra-Low Breakage Rate: Achieves a breakage rate of 3 permille or less on A-grade cells, protecting your valuable cell strings and reducing material waste.
Fast Soldering Speed: Completes one full string terminal welding cycle in just 20 seconds (based on 166mm cells), supporting high-volume production demands.
Wide Compatibility: Supports multiple cell sizes including 158.75mm, 166mm, and 210mm, as well as various ribbon specifications from 6-8 x 0.12mm, providing flexibility for different product configurations.
Flexible String Length Range: Accommodates cell strings from 600mm to 2000mm in length, suitable for diverse shingled module designs.
Intelligent Control System: PLC-based control with servo motors, a user-friendly touch screen interface, and real-time fault alarm monitoring for stable and easy operation.
Lifetime Software Upgrades: Ooitech provides free lifetime software upgrades, ensuring your equipment stays updated with the latest process optimizations.
Expansion-Ready Architecture: Built-in ports for integration with tabber stringers, string inspection systems, and layup machines, enabling seamless production line connectivity.
Immersion Flux Application: The immersion-type flux spraying method ensures uniform and consistent flux coverage for high-quality solder joints.
Product Applications
Application Scenarios
The STW-60A Automatic Shingled String Cell Terminal Head Welding Machine is designed for use in the following solar panel manufacturing scenarios:
Shingled Solar Module Production Lines: Serves as the dedicated terminal welding station in shingled module assembly, welding busbar ribbons onto both ends of shingled cell strings before they proceed to layup and lamination.
High-Efficiency Module Manufacturing: Suitable for production lines manufacturing PERC, TOPCon, IBC, ABC, HPBC, and other high-efficiency cell-based shingled modules, supporting cell sizes from M6 to M12.
New Solar Panel Factory Setup: An essential piece of equipment for new solar panel factories establishing shingled module production capabilities, from pilot lines to full-scale GW-level manufacturing.
Production Line Upgrades: Ideal for existing solar panel manufacturers looking to upgrade from manual or semi-automatic terminal welding to fully automatic operation, improving yield and reducing labor costs.
Integrated Automated Production Lines: With its reserved expansion ports, the STW-60A integrates seamlessly with Ooitech tabber stringers, EL testers, layup machines, and other production line equipment for end-to-end automated manufacturing.
Research and Development Labs: Suitable for R&D institutions and pilot production facilities developing and testing new shingled module designs and processes.
For a comprehensive overview of Ooitech solar panel production line solutions, watch our MBB Full Automatic Solar Panel Production Line video: https://www.youtube.com/watch?v=uRS9sn94sIQ
Contact Us to Get a Quote
Why Choose Ooitech
Ooitech is a professional solar panel production line equipment manufacturer specializing in the design, delivery, training, raw materials supply, and after-sales service for production lines ranging from 5MW to 1GW capacity. Our complete product portfolio covers every stage of solar module assembly, from glass loading to final testing.
Get in Touch
Ready to add the STW-60A Automatic Shingled String Cell Terminal Head Welding Machine to your production line? Contact our team today for pricing, technical consultation, and production line planning:
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