In garment accessories, printed paper products, and food packaging, top-surface labeling of flat materials such as cards, hang tags, unformed cartons, and plastic bags often poses challenges. Manual feeding of stacked material is slow and prone to double or multiple sheets jamming, causing missed or crooked labels. Stable, efficient sheet-feeder labeling is a core requirement for line upgrades.

Conventional sheet-feeder labeling challenges and the WZ-125 solution

Conventional semi-automatic equipment often relies on operators to separate flat material sheet by sheet, which is physically demanding and limits throughput. When material thickness varies or surface friction changes, sheets easily stick together or jam, directly affecting labeling quality. To solve this, Wanzhi Automation developed the WZ-125 automatic sheet-feeder labeling machine. As an automatic inline sheet-feeder labeling system, it combines automatic sheet separation, photoelectric detection, automatic labeling, and finished-product collection. It separates stacked material into single sheets by mechanical means, fundamentally overcoming the efficiency bottleneck and double-sheet problems of manual feeding and providing a stable automated labeling solution for high-volume flat products.

Core technology and specifications

The WZ-125’s main advantage is its efficient sheet feeder and precise labeling control. The automatic sheet separation mechanism handles most flat products 0.5-5 mm thick and 80-350 mm long and wide, giving good versatility. During conveying, a high-precision photoelectric sensor detects material position in real time and triggers dispensing precisely, holding labeling error within ±1 mm and effectively preventing missed and blank labels.

For throughput, the line conveyor runs at 35-130 PCS/min with stepless speed control, meeting both flexible small and medium batch production and high-speed volume lines. As professional equipment manufactured by Dongguan Wanzhi Automation Technology Co., Ltd., the WZ-125 is operated from a touch screen with visual parameter storage and recall, so changeover to different product specifications is simple. The machine also provides ample expansion interfaces: optional multi-head labeling modules, inkjet coders, or inline printers can be added to combine labeling and coding in one step.

Practical tips and applications

In selection and setup, users should adjust the sheet feeder to suit the material. Key points:

  • Smooth-surfaced materials: for plastic packaging bags, increase the sheet-feeding wheel pressure to prevent slipping.
  • Thin paper materials: for thinner paper hang tags, reduce pressure to avoid scratching the surface.
  • Multi-label processes: adding multi-head modules allows multiple regions to be labeled in one pass.

The machine is widely used for labeling care labels and hang tags in garment accessories, cards in printed paper products, and the top surface of plastic bags in food packaging. With modular expansion it also handles complex processes that require several labels at once or printing the production date, helping companies raise the overall automation level of their lines.

FAQ

What should I do if the WZ-125 feeds two sheets at once?

First check whether the gap between the sheet-feeding wheel and the conveyor belt is too large, then confirm the material thickness is within the 0.5-5 mm range the machine handles. If the surface is very smooth, tighten the sheet-feeding wheel spring pressure or fit wheels with higher friction.

How do I correct a consistent offset in label position?

A consistent offset is usually caused by incorrect photoelectric sensing position or dispensing delay. Fine-tune the label dispensing delay parameter on the touch screen so the label is applied accurately when the material reaches the set position, and check that the material guides are parallel so products do not drift.

Does the machine support printing the production date while labeling?

Yes. The WZ-125 supports modular expansion and can be fitted with an inline thermal transfer coder or inkjet printer as needed, printing the production date, batch number, and other information before or after labeling for integrated labeling and coding.

Written by Wanzhi Automation