Lingchen Bus PLC empowers the full inspection equipment for mobile phone camera modules
Bus-based PLC
Enabling full inspection equipment for mobile phone camera modules.
In the field of precision optical manufacturing, the dimensional accuracy of mobile phone lens modules directly affects image quality. Traditional manual inspection methods are inefficient and inconsistent, and customers urgently need a high-precision, fully automated inspection solution. Leveraging its proprietary PLC control system, Lingchen Technology successfully delivered a fully automated inspection solution for mobile phone lens module dimensions, achieving complete automation from loading and inspection to unloading.
Core Solutions and Technological Breakthroughs
Feeding Module - Smart Upgrade of Cleaning Mode
Pain Points:
When the feeding tray is not full, random picking of materials easily triggers vacuum alarms, and there are conflicts in the tray switching logic during the cleaning mode.
Solution:
Suppresses vacuum alarm interference in cleaning mode.
Dynamically scans for material presence during tray switching (Pos1→Pos3), automatically skipping positions without material.
The dispensing logic only verifies the absence of material on the nozzle, avoiding misjudgment of the number of trays.
Inspection Module - Dual-Mode Precise Adaptation
Conflict:
The GRR mode (dual-station batch inspection) and the spot inspection mode (single-station sampling inspection) coexist, and the fixed suction nozzles are prone to interference during material handling.
Solution:
The spot inspection mode utilizes a suction nozzle priority algorithm (1st → 2nd nozzle progressive avoidance).
The GRR mode is integrated into the main production line, while the spot inspection mode independently controls the turntable rotation cycles.
Material Handling Module - Five Result Categories with Zero Gap Management
Challenge:
The five results (OK/NG/NG1/NG2/NG3) need to be arranged without any gaps.
Solution:
Real-time calculation of available tray slots (n × m - a) and outputting coordinates.
Three-level material placement strategy: Prioritize processing OK materials → sequentially check NG material trays → nozzle collaboration to prevent collisions.
Project Outcomes and Customer Value
1. Performance Specifications
Cycle time: 2.9 seconds/module (can be optimized to 2.5 seconds)
Detection accuracy: GRR 0.02mm / CRR 0.01mm
2. Technological Advantages
Lingchen's PLC + HMI + remote I/O servo system provides stable support for medium-sized equipment.
Dynamic offset calculation technology significantly reduces operating difficulty and improves changeover efficiency by 40%.
3. Industry Value
This project establishes a standardized development paradigm, demonstrating the mature application capabilities of Lingchen bus-based PLCs in precision optical inspection scenarios, and provides a reusable technical benchmark for industries such as 3C electronics and semiconductors.
Through this project, we have once again verified the reliability of the Lingchen PLC system in high-precision manufacturing scenarios. In the future, we will continue to optimize motion control algorithms and vision collaboration capabilities to provide more intelligent and flexible automation solutions for the precision manufacturing industry!