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Automatic weighing top-surface print-and-apply labeling machine
The automatic weighing top-surface print-and-apply labeling machine is an integrated weighing, printing, and labeling inline system developed by Wanzhi Automation for the fresh fruit and vegetable and e-commerce logistics industries. It combines inline dynamic weighing, real-time variable-data printing, and automatic top-surface labeling, using an overhead labeling structure to acquire weight, calculate price, print the label, and apply it to the top of the packaging bag during conveying, all in sync. Labels face consistently upward for easy barcode scanning and shelf display, and the machine can connect to vegetable and fresh food packaging lines for continuous operation;
Product details
The automatic weighing top print-and-apply labeling machine is an integrated weighing, printing and labeling inline machine developed by Wanzhi Automation for the fresh fruit and vegetable and e-commerce logistics industries. It combines inline dynamic weighing, real-time variable data printing and automatic top-surface labeling: with a top-mounted labeling structure, it completes weight capture, price calculation, label printing and label application on the top surface of the package during conveying, with labels facing upward for barcode scanning and shelf display identification. It can be connected to vegetable and fresh produce packaging lines for continuous operation, replacing manual weighing and hand labeling and helping companies achieve packaging standardization and digital production management.
Industries & applications
Ready-to-cook and prepared dish processing: various bagged ready-to-cook and pre-cut vegetable packaging lines with top coding, weighing and labeling; ready-to-cook distribution centers and fresh food central kitchens. Fruit and vegetable cold chain packaging: top price labeling for bagged and boxed fresh produce, meeting cold chain distribution and batch management requirements. Supermarkets and fresh food supply chains: top labeling for pre-packaged vegetables, making in-store scanning and checkout, shelf display and traceability easier. Connected lines: interfacing with pillow packaging machines, cooling conveyors and sorting and re-inspection lines to form an integrated automated packaging line.
Technical specifications
| Weighing range / accuracy | 0.02~3kg (extended range optional) / ±0.5g~±2g (depending on product and conveying speed) |
| Labeling speed | 15~40 bags/min (adjustable with bag length and conveying speed) |
| Print resolution | 300DPI high-resolution printing |
| Conveyor surface | Food-grade PU belt, adjustable linear speed |
| Power supply / power | AC220V 50Hz, approx. 1.2kW |
| Air supply requirements | 0.4~0.6MPa clean compressed air |
Key features
- 1. Precise top-surface label positioning: the labeling head applies the label from above the bag, with all labels facing up in a controlled position, so barcode scanners and vision systems read them quickly and information is identified faster in the distribution chain.
- 2. Inline weighing and real-time pricing: a high-precision weighing module captures weight during conveying, calculates unit and total prices automatically, and generates variable labels carrying weight, barcode, traceability QR code, product name, and production date.
- 3. High-speed continuous operation: labeling is synchronized with the conveying cycle, and the machine runs steadily on its own; linked with a packaging machine it forms a continuous automated labeling line that supports overall line efficiency.
- 4. Intelligent error prevention: it detects and alarms on missing labels, paper breaks, no product, and out-of-tolerance weighing, and can trigger a reject mechanism to separate abnormal items, preventing missed, duplicate, and wrong labels.
- 5. PLC plus touch screen control: visual recipe setup and one-touch switching between categories, and it can work online with traceability platforms, ERP, packaging hosts, and metal detection equipment.
- 6. Food-grade hygienic construction: 304 stainless steel body and a food-grade conveyor belt, moisture-resistant and easy to clean for the humid conditions of fresh-food workshops.
- 7. Flexible label compatibility: thermal and thermal-transfer modes support price labels, traceability certificates, batch labels, and other label types.
