Maotong Easy-Open Lid Coding Inspection Equipment
This equipment (officially termed Easy-Open Can Coding Inspector / Bottom Code Vision Inspection System, e.g., Model MT-YLG-OCR) is an online machine vision inspection system developed by Jinan Maotong Inspection Equipment Co., Ltd. for food and beverage canning lines. It automatically verifies the quality of inkjet-printed or laser-engraved codes on the bottom of easy-open lids (can ends) and rejects non-conforming products.
🔍 Primary Functions
Installed after filling, seaming, and coding, it performs 100% online inspection to detect:
Presence/Absence of codes (missing prints).
Character Defects (blurriness, broken strokes, missing dots).
Content Accuracy (verifying date, batch/lot numbers via OCR matching against preset formats).
Barcode/QR Code Readability (if applicable).
Non-conforming cans are automatically ejected by pneumatic rejectors.
⚙️ Working Principle
Trigger & Capture: Cans pass the inspection station → Photo-eye trigger → Industrial smart camera with customized lighting captures the bottom code image.
Image Processing: Vision software preprocesses images (denoising, enhancement) and uses OCR/OCV (Optical Character Verification) or pixel analysis to validate code integrity and content.
Decision & Rejection: PLC controls pneumatic nozzles/diverters to eject defective cans at a designated position; good cans pass through.
Data Logging: Automatically saves defect images and statistics, supporting traceable reporting.
✅ Key Features
Item | Description |
|---|---|
Inspection Speed | Typically supports 40,000 – 72,000 cans/hour; high-end models up to 80,000+ cans/hour. |
Inspection Mode | Non-contact, inline 100% inspection without damaging cans. |
Compatibility | Works with 2-piece/3-piece cans; compatible with both inkjet and laser coding. |
HMI | Touchscreen interface; configurable multi-code formats; automatic date shifting; character training supported. |
Environmental Adaptability | Industrial-grade protection; some models include industrial air conditioning for high-temperature workshops. |
In short, Maotong Easy-Open Lid Coding Inspection Equipment uses industrial cameras and vision algorithms to replace manual checks. It "watches" every can base on high-speed lines to ensure production dates/codes are present, correct, and legible, automatically removing defective ones to prevent unlabeled or mislabeled products from reaching the market.
