Description

Defect Management Architecture

• Post-SPI/AOI Isolation Buffer: Specialized for temporary storage of non-conforming (NG) boards identified by SPI or AOI systems, preventing defective PCBs from advancing downstream. The dual-magazine lower conveyor configuration provides segregated storage lanes for efficient NG/OK sorting.

• Dynamic NG/OK Pass-Through Logic: Integrated cached pass-through functionality allows immediate routing of conforming (OK) boards to subsequent processes while isolating NG boards. Bypass mode enables uninterrupted line flow during maintenance or buffer saturation.

Precision Conveyance & Control

• High-Precision Servo Positioning: Servo motor-driven indexing achieves positional accuracy ≤±0.1mm, ensuring repeatable retrieval during rework operations. This complements the “fast, smooth and accurate retrieval location” mechanism documented for high-throughput environments.

• Industrial-Grade Motion Components: Imported low-friction bearings (e.g., NSK/TBI referenced in major configurations) minimize roller transmission resistance, enabling smooth handling of boards up to 530×390mm without edge damage.

• Hardened Lead-Screw Width Adjustment: Manual parallel width adaptation via corrosion-resistant lead screws accommodates PCB sizes from 50×50mm to 530×390mm, maintaining alignment integrity under continuous operation.

Automation & Integration

• Mitsubishi PLC Intelligence: Programmable logic controller executes FIFO/LIFO/NG buffering algorithms with real-time diagnostics. Error codes display via the HMI to expedite troubleshooting.

• Unified SMEMA/EAP Signaling: Electrically compatible with AOI/SPI machines for automated board-status handshaking. Standardized 24V I/O and transport height (900±20mm) ensure plug-and-play integration.

• Sealed Touchscreen HMI: IP65-rated interface resists flux contamination and supports password-protected access for operational mode selection (FIFO/LIFO/Bypass) and capacity monitoring.

Robust Mechanical Design

• Dual-Layer Magazine Architecture: Upper conveyor (1 magazine) and lower conveyor (2 magazines) enable simultaneous processing of NG/OK boards, reducing handling time by 40% versus single-lane buffers.

• Pneumatic Clamping System: Tool-less magazine locking secures PCBs during vertical indexing, eliminating vibration-induced misalignment.

• Anti-Static Roller Transmission: Electrically grounded rollers dissipate static charge, protecting sensitive components during storage/retrieval.