The Guanshentai Inline Chip-Free Automatic Circumferential Cutting Machine is specialized equipment designed for the fixed-length cutting and end-finishing of precision thermoplastic tubing, such as pipettes, Pasteur pipettes, droppers, and puncture tubes. Integrating inline continuous feeding, a precision circumferential cutting mechanism, end-face finishing, and automatic unloading, the machine performs uninterrupted inline cutting of extruded tubing. The process is free of dust, chips, and burrs; it achieves a cutting speed of 2,000–4,000 pieces per hour, producing smooth, flat cut ends that require no secondary trimming.
Key Advantages:
Chip-Free Circumferential Cutting Technology: Utilizes a multi-blade rotary circumferential cutting principle. Blades rotate synchronously along the tube's circumference to cut in and then retract radially—unlike traditional sawing or shearing methods that cut radially through the material. This fundamentally eliminates dust, chips, or stringing during cutting, resulting in smooth, flat end faces free of burrs or inner-diameter constriction, making it ideal for the clean, dust-free production requirements of precision pipettes and medical consumables.
Inline Continuous Operation: The machine connects directly to extrusion lines, enabling immediate inline fixed-length cutting and unloading after the tubing is extruded and cooled/set. This eliminates the need for separate winding and offline cutting, significantly shortening the process flow and reducing intermediate handling steps and the risk of product contamination.
Precise and Controllable Length Cutting: Employs servo-driven traction and a high-precision encoder-based closed-loop length measurement system. Length error is controlled within ±0.2 mm, and the system supports rapid setting of any length between 50 mm and 300 mm to meet the cutting requirements of various pipette specifications.
Optional End-Face Finishing: Can integrate an end-face chamfering/finishing module to perform simultaneous internal and external chamfering on both ends of the cut tubing. This results in smooth, rounded ends, enhancing the product's tactile feel and visual quality.
Flexible Compatibility: Compatible with various materials such as PP, PE, PS, and PETG. It accommodates tube diameters of 2–15 mm and wall thicknesses of 0.3–2 mm, allowing for rapid product specification changes by simply swapping the cutter head and traction wheel assembly.
Automatic Unloading and Counting: Equipped with an automatic collection chute and counter for finished products; cut pipettes slide neatly into the collection bin while the cumulative output is displayed, facilitating production statistics and management.
Cleanliness and Safety: The fully enclosed cutting zone features a transparent protective cover and a negative-pressure dust extraction port (designed to capture trace airborne particles), effectively isolating the cutting process to meet clean-room production standards for medical consumables. Safety interlocks and emergency stop devices are also included to ensure operator safety.
Ease of Operation: Controlled via PLC and a touchscreen HMI, parameters such as cutting length, cutting speed, and traction speed can be set with a single touch; multiple recipe configurations can be saved, enabling quick and convenient product changeovers.
Application Scenarios:
Suitable for precision fixed-length, chip-free cutting of various thermoplastic tubes, including life science consumables (pipettes, Pasteur pipettes, disposable droppers, serological pipettes), medical consumables (catheters, drainage tubes, puncture cannulas, infusion tubing), food industry products (beverage straws, stirring sticks), and industrial tubing (pneumatic hoses, insulating sleeves). With its chip-free, precise, and high-efficiency cutting capabilities, the Guanshentai inline automatic chip-free circumferential cutting machine helps precision tubing manufacturers upgrade their cutting processes to achieve automation and clean production, significantly enhancing product quality and manufacturing efficiency.
Technical Parameters:
Equipment Model: GST-YYG100A
Sizes: 2600*600*1700mm
Pipette capacity: 1-100ml
Cutting efficiency: 1 meter tube, can reach 15 meters / min
Cutting precision: tolerance ± 0.1mm
Power (Output): 1.5KW
Customized Support: Yes

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