The Guanshentai Automatic Ultrasonic Pipette Welding Machine is specialized equipment designed for the precision ultrasonic welding of the joint between the body and the tip/connector of long tubular containers, such as pipettes, Pasteur pipettes, and droppers. The system integrates automatic tube loading, body positioning, automatic feeding of tips/connectors, ultrasonic welding, weld quality inspection, and automatic unloading, enabling a fully automated assembly process that transforms bulk components into finished pipettes.
Key Advantages:
Precision Welding: Utilizes a high-frequency ultrasonic welding system with welding times precisely controllable between 0.1 and 2.0 seconds. It delivers uniform weld strength and excellent sealing, with no flash, burrs, scorching, or discoloration at the weld site, ensuring a smooth, flat finish at the joint.
Specialized Positioning System for Long Tubes: Designed to handle the high aspect ratio and flexibility of pipettes, the system employs multi-point pneumatic positioning clamps and flexible support mechanisms. This ensures the long tube remains axially aligned without shifting or wobbling during welding, achieving a positional accuracy of ±0.1mm.
Adjustable Welding Strength: Parameters such as ultrasonic amplitude, welding time, hold time, and welding pressure can be independently adjusted via the touchscreen. Optimal settings can be configured for various materials (PP, PE, PS, PETG, etc.) and wall thicknesses, ensuring the best balance between weld strength and aesthetic quality.
Contamination-Free Design: All contact surfaces utilize food-grade or medical-grade non-metallic materials (e.g., Teflon, polyurethane, silicone) to prevent scratches or contamination caused by metal contact, meeting clean production standards for laboratory consumables.
In-line Weld Quality Inspection: Features an integrated airtightness or tensile testing module (optional). It verifies weld seal integrity using air pressure decay or mechanical pull-testing methods, automatically sorting and discharging acceptable and defective products to ensure a high yield rate.
Material Shortage Detection & Protection: Equipped with a multi-sensor protection system that monitors for missing tube bodies, missing tips/connectors, and welding anomalies. The machine halts operation if materials are missing or jammed, preventing welding errors and ensuring continuous, stable performance.
Flexible Adaptability: Compatible with a wide range of pipette specifications (lengths of 80–300 mm, diameters of 3–20 mm) and various connector types. Product changeovers—involving the replacement of positioning fixtures and welding molds—can be completed within 15–20 minutes.
Ease of Operation: Features a PLC and touchscreen HMI; welding parameters can be set with a single touch, and multiple product recipes can be saved. The system offers real-time operational monitoring and error alarms with specific code indications, facilitating rapid troubleshooting and maintenance.
Applications:
Widely applicable to the welding and assembly of tube openings for long, tubular containers, including life science consumables (pipettes, serological pipettes, Pasteur pipettes, disposable droppers), medical consumables (urine and medication droppers), and laboratory equipment. With its efficient, precise, and clean welding performance, the Guanshentai automatic ultrasonic pipette welding machine helps laboratory consumable manufacturers upgrade their tube welding and assembly processes through automation.
Technical Parameters:
Equipment Model: GST-YYG103A
Pipette capacity: 10-100ml (1 set of equipment can only process a capacity of the pipette)
Ultrasonic equipment: Taiwan brand Evergreen 15-20K
Sizes: L2500xW1500xH1200 (mm)
Production Capacities: 1100-1200 pcs/hour
Power (Output): 4.3KW
Customized Support: Yes

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