Electromagnetic stepping three-dimensional rotary braiding machine and control method

By adopting electromagnetic yarn carrier motion control in stepping three-dimensional rotary knitting machines, the problems of high failure rate and low weaving efficiency caused by complex structure and motion interference in existing machines are solved, and more efficient and reliable three-dimensional braiding forming is achieved.

WO2025061131A1 Publication Date: 2025-03-27NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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Patent Information

Application Number
PCT/CN2024/119966
Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
Priority Date
2023-09-20
Filing Date
2024-09-20
Publication Date
2025-03-27

AI Technical Summary

Technical Problem

The existing stepping three-dimensional rotary knitting machine has high failure rate due to complex structure and collision and interference between moving parts, which affects the weaving efficiency and limits its promotion and application in the engineering field.

Method used

The electromagnetic stepping three-dimensional rotary braiding machine is adopted to control the movement and stop of the yarn carrier through electromagnetic adsorption, simplifying the mechanical structure and transmission mode and reducing friction and collision between the moving mechanisms.

Benefits of technology

It reduces the equipment failure rate, improves weaving efficiency, simplifies mechanical structure, and is suitable for the automation and digital forming of three-dimensional braided fabrics in complex structures.

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Abstract

An electromagnetic stepping three-dimensional rotary braiding machine and a method for preparing a three-dimensional structured fabric by the braiding mechanism. The braiding machine comprises a braiding machine chassis (2) and a motion mechanism thereof, an electromagnetic auxiliary system, a fabric traction device (1), and an electronic control system (3). The motion mechanism of the braiding machine chassis is composed of cross-shaped forks (10) disposed adjacent to each other, and is used for driving yarn carriers (5) to move in a specific pattern. The electromagnetic auxiliary system is used for achieving position transfer and stopping of the yarn carriers (5) between motion components. The fabric traction device (1) is used for lifting a woven fabric at a certain speed. The electronic control system (3) is used for issuing and transmitting a motion instruction for the yarn carriers (5). The braiding machine uses the electromagnetic auxiliary system to control movement and stopping of the yarn carriers (5). Compared with conventional stepping rotary braiding machines, the mechanical structure and transmission mode are significantly simplified, and it is easy to achieve automated and digitalized formation of complex-structured three-dimensional woven fabrics.
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