Application of Lingchen PLC in Photovoltaic Covering Machine
In the photovoltaic module manufacturing process, the junction box capping is a crucial step in ensuring product quality. Lingchen PLC, with its high-precision control and multi-protocol compatibility, provides an efficient and stable motion control solution for photovoltaic capping machines. This article will analyze the core value of this solution in detail from the perspectives of product, equipment, technology, and control advantages.
I. Product and Process Flow
1. Core Function:
After the photovoltaic panel is installed in the junction box, the protective performance of the junction box is ensured by testing for adhesive residue and sealing the cover.
2. Process Flow:
Sorting → Dicing → Single Welding → String Welding → Lamination → Visual Inspection → Lamination → Trimming → Visual Inspection → Framing → Junction Box Assembly → Curing → Cleaning → Testing → Packaging
II. Equipment Composition and Working Principle
1. Material Handling Module
Flexible Vibratory Feeder: Completes lid flipping and positioning. Wire Box Positioning Camera: Takes pictures, calculates, and transmits the coordinates to the PLC, which controls the material handling module to accurately pick up the lid.
2. Glue Probing and Covering Robotic Arm
Six-axis robotic arm: Receives visual coordinates from three junction box positioning cameras and is controlled by a PLC to complete glue probing and cover-up actions.
Junnel box inspection camera: Inspects the junction box after cover-up and feeds the results back to the back station.
3 Auxiliary Modules:
Flow channel correction: Long and short side correction ensures photovoltaic panel positioning accuracy. Moving module: Drives the inspection camera to complete a multi-station inspection.
III. Solution and Advantages
Communication Protocol and System Integration:
Multi-protocol compatibility: Supports protocols such as PC vision (Modbus TCP/Server), vibratory feeder (Modbus TCP/Master), robotic arm (EtherNetIP/Scanner), and servo control (EtherCAT). Recipe Compatibility: Adapts to rapid switching between different photovoltaic panel and cover models.
Core Performance Advantages:
Ultra-short synchronization cycle: 1ms (8-axis), 2ms (16-axis), 4ms (32-axis). Complete system solution: Integrates HMI, motion controller, bus servo, and remote I/O modules. Program portability: Developed on the Codesys platform, with a mature architecture and easy portability.
Services and Ecosystem Support:
Provide on-site development support and build an ecosystem of "industrial control + intelligent transmission".
Lingchen's PLC solution significantly improves the production efficiency and consistency of photovoltaic capping machines through high-precision visual positioning, multi-axis collaborative control, and flexible communication protocols. Its 16-second/piece CT time, 0.02mm calibration accuracy, and robust system architecture fully demonstrate its technological leadership in the field of industrial automation. In the future, this solution will continue to support the photovoltaic industry in achieving intelligent upgrades.