Solution

      The "Action Plan for the Development of the Intelligent Testing Equipment Industry (2023-2025)" focuses on four key areas: industrial foundation innovation, supply capacity enhancement, technology and equipment promotion, and industrial ecosystem optimization. This aims to promote the interconnection and interoperability of manufacturing and testing equipment, and improve the intelligence level of products. It also emphasizes strengthening research on core technologies, accelerating the filling of gaps in the industrial foundation to promote the market application of high-quality basic products, and better developing core components/parts, thereby driving the intelligentization of intelligent manufacturing equipment

    The charge-coupled device (CCD) in a photovoltaic CCD screen printing machine is a solid-state electronic device that uses clock pulse voltage to generate and control changes in the semiconductor potential well, enabling the storage and transfer of charge information. It features high sensitivity, fast response speed, high pixel integration, and precise dimensions. Therefore, photovoltaic CCD screen printing machines can better improve photovoltaic cell efficiency and reduce production costs

High-precision alignment

    By combining image processing and analysis technologies, the precise placement position of the photovoltaic DE cell module is calculated. After performing image preprocessing, edge extraction, filtering, pixel processing least squares fitting, and CCD joint positioning, the photovoltaic CCD alignment screen printer converts the optical image signal into a digital signal, which is then collected by the AU7 500E expandable vertical IO module and transmitted to the PLC.

High-speed printing

    After receiving the input signal from the AU7 500E expandable vertical I/O module, the PLC performs internal calculations and then transmits the output signal to the actuators of each slip ring for printing through the distributed connection of the AU7 500E module

    During equipment optimization and upgrades, the previously used turntable mechanism required all input/output points to be transmitted to the PLC via slip rings, resulting in cumbersome wiring, high costs associated with multi-channel slip rings, and interference issues. The newly used AU7 500E expandable vertical I/O modules allow for distributed connections via network cable extension modules, with extension cables reaching a total length of 150 meters. While successfully resolving the issues of cumbersome wiring, signal interference, and high costs, the modular maintenance design and remote monitoring and diagnostics have also reduced failure rates and maintenance costs

Photos from the scene

    The AU7 500E expandable vertical I/O module is an independent distributed site that supports six major bus protocols: EtherCAT, Profinet-RT, EtherNet/IP, CC-Link IEF Basic, Modbus-TCP, and CC-Link V2. Up to 16 AU7 500E-EM modules can be expanded

    It adopts spring-loaded push-button terminals for quick wiring; the terminals are pluggable, so there is no need to rewire when replacing modules, saving time and effort