The Guanshentai Automatic Pipette Filter Insertion Machine is specialized equipment designed for the automated assembly of filters into long, tubular liquid-handling instruments such as pipettes, Pasteur pipettes, and droppers. Integrating automatic tube feeding and sorting, automatic filter cutting and loading, precision filter insertion, finished product inspection, and automatic unloading, the system achieves a fully automated workflow—transforming bulk tube bodies and filter materials into finished, filter-equipped pipettes. With a production speed of 1,500–3,000 units per hour, it effectively replaces traditional manual filter insertion methods.
Key Advantages:
Precision Filter Insertion: Utilizing a high-precision servo press-fit system combined with a precision guiding mechanism, the machine accurately inserts cut filters (fiber cotton, porous polyethylene, or melt-blown fabric) to a specified depth within the pipette. The insertion depth tolerance is controlled within ±0.3 mm, ensuring consistent filter positioning without skewing, edge curling, or damage to the inner tube wall.
Automatic Filter Cutting and Loading: Equipped with mechanisms for the automatic unwinding of rolled filter material, fixed-length cutting, and vacuum-based transfer, the system ensures precise dimensions and clean, burr-free cuts. Waste material is automatically recovered, eliminating the need for manual pre-cutting and reducing labor time for material preparation.
Flexible Long-Tube Conveying System: Addressing the high aspect ratio and flexibility of pipettes, the system employs a specialized vibratory bowl feeder paired with vertical flexible guide rails. Contact surfaces feature polished non-metallic materials to prevent scratching the inner or outer tube walls during transport and positioning, thereby maintaining product surface quality.
Anti-Clog and Anti-Skew Design: The insertion mechanism features a guide cone sleeve at the tube opening and a filter insertion tube. This ensures the filter enters vertically, preventing jams at the opening or issues such as edge curling and misalignment during insertion, resulting in a press-fit yield rate exceeding 99.5%.
In-line Inspection and Rejection: Integrated fiber-optic/photoelectric sensor stations monitor filter depth and positioning in real-time. Defective units—such as those with missing filters, misalignment, or depth deviations—are automatically identified and separated from the production line, ensuring a high finished product pass rate.
Material Shortage Protection and Automatic Alarm: Each station is equipped with sensors to detect the presence of pipette tubes and filter inserts. The system prevents pressing operations when tubes are missing and triggers an automatic stop and alarm if materials run out; this avoids "dry" pressing or equipment idling, thereby ensuring continuous production.
Broad Material Compatibility: Compatible with various pipette materials such as PP, PE, PS, and PETG. It accommodates tube lengths of 80–300 mm and diameters of 3–20 mm; switching between product specifications is quick and easy, requiring only a change of the feeding track and press-fit fixture.
User-Friendly Operation: Features a PLC and touchscreen HMI. Parameters such as press-fit depth, speed, and filter cutting length can be set with a single touch, and multiple production recipes can be saved for quick changeovers. General operators can master the equipment after simple training.
Application Scenarios:
Widely applicable to the automated assembly of filter inserts for long tubular liquid-handling devices. This includes consumables for life sciences (pipettes, Pasteur pipettes, serological pipettes, disposable droppers), in vitro diagnostics (sample droppers, reagent droppers), and general medical supplies. With its high-efficiency, precision, and clean assembly capabilities, the Guanshentai Automatic Pipette Filter Insertion Machine helps manufacturers upgrade their pipette filter insertion processes to automation, effectively reducing labor costs and ensuring consistent product quality.
Technical Parameters:
Equipment Model: GST-YYG106A
Pipette capacity: 1-100ml
Sizes: 1620*1220*1850mm
Production Capacities: 12000pcs/hour
Power (Output): 220V AC
Customized Support: Yes

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