Lingchen Bus PLC Empowers Full Inspection Equipment for Mobile Lens Modules

In the field of precision optical manufacturing, the dimensional accuracy of mobile phone lens modules directly affects the image quality. Traditional manual inspection is inefficient and inconsistent, and customers are in urgent need of a high-precision, fully automatic inspection solution. With its independent PLC control system, Lingchen Technology has successfully delivered a mobile phone lens module dimensional full inspection equipment solution, realizing full process automation from loading, testing, to unloading.

Core solutions and technological breakthroughs

1. Feeding module - intelligent upgrade of material clearing mode

Pain point: Random material picking when the loading tray is not full is easily to trigger the vacuum alarm, and the logic of the platform change in the clearing mode conflicts.

Solution: 

- Shield the vacuum alarm from interference in the clearing mode

- Dynamically scan the material position (Pos1→Pos3) when the platform changes position, and automatically jump to the position when there is no material

- The material discharge logic only verifies the suction nozzle without material status to avoid misjudgment of the number of platforms

2. Detection module - dual-mode precise adaptation

Contradiction: GRR mode (double-station batch inspection) and spot inspection mode (single-station sampling inspection) coexist, and fixed suction nozzle material picking is prone to interference.

Solution: 

- The spot inspection mode enables the suction nozzle priority algorithm (No. 1→No. 2 progressive avoidance)

- GRR mode is integrated into the main production line, and the spot inspection mode independently controls the number of turntable rotations

3. Feeding module - Zero-space management of five types of results

Challenge: Five results of OK/NG/NG1/NG2/NG3 need to be arranged without gaps.

Solution: 

- Real-time calculation of tray space (n×m-a) and output of coordinates

- Three-level material discharge strategy: Prioritize OK materials → Judge - NG material boxes in sequence → Suction nozzles cooperate to prevent collision

Project results and customer value

1. Performance indicators Machine cycle 2.9 seconds/module (can be optimized to 2.5 seconds) Detection accuracy up to GRR 0.02mm / CRR 0.01mm

2. Technical advantages Lingchen PLC+HMI+remote IO servo system Stable support for medium-sized equipment Dynamic offset calculation technology greatly reduces the difficulty of operation and improves the efficiency of changeover by 40%

3. Industry value This project forms a standardized development paradigm, confirms the mature application capabilities of Lingchen bus PLC in precision optical detection scenarios, and provides a reusable technical benchmark for 3C electronics, semiconductors, and other industries.

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 visual collaboration capabilities to provide smarter and more flexible automation solutions for the precision manufacturing industry!