Axial Magnetic Coupling for Independent Yarn Twisting and Winding
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Solution Overview
Problem
Conventional yarn twisting machines face inefficiencies due to costly equipment, limited operating speeds, tangling risks, and dependency of yarn twisting speed on winding speed, along with inefficiencies in energy transmission and mechanical complexity.
Innovation Solution
A twisting machine utilizing an axial magnetic coupling to independently control yarn twisting and winding speeds, with a compact design that holds the bobbin carrier stationary and transmits motion through an axial magnetic coupling, eliminating external components and reducing centrifugal forces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If radial magnetic coupling is used to drive bobbin winding unit, then motion transmission is achieved, but equipment material cost increases and operating speed limitation occurs
Solution Approach 1:
The patent transitions from radial magnetic coupling (in-plane force transmission) to axial magnetic coupling (out-of-plane force transmission). The axial coupling uses magnetic forces along the shaft axis direction to drive the bobbin winding unit, eliminating the need for large radial couplings that limited speed and increased cost.
2Stability of the object's composition
If radial magnets are placed around shaft axis to hold carrier stationary, then carrier positioning is achieved, but yarn balloon tangling risk increases
Solution Approach 1:
The patent extracts the magnetic positioning function from the radial plane and relocates it to the axial plane. By placing magnets above and below the carrier in the axial direction, the harmful radial magnetic forces that caused yarn tangling are eliminated, while carrier positioning stability is maintained through axial magnetic attraction.
3Use of energy by moving object
If slip-ring arrangement is used to transmit energy inside balloon, then energy transmission is achieved, but sparks are generated causing fire risk
Solution Approach 1:
The patent replaces the slip-ring arrangement (mechanical electrical contact) with an axial magnetic coupling system. Energy is transmitted through magnetic fields along the shaft axis, eliminating mechanical contacts that generate sparks and fire risks, while maintaining efficient energy transmission to the bobbin winding unit.
4Power
If planetary mechanism with belt-pulley and gear pairs is used, then motion transmission is achieved, but assembly effort increases and vibration increases
Solution Approach 1:
The patent replaces complex mechanical transmission systems (planetary mechanisms, belt-pulley, gear pairs) with an axial magnetic coupling system. The magnetic coupling directly transmits motion from the shaft to the bobbin winding unit, eliminating multiple mechanical components, reducing assembly complexity, and minimizing vibrations at high speeds.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The machine achieves higher operating speeds, reduces tangling risks, and is cost-effective while maintaining independent control over twisting and winding speeds, enhancing overall efficiency and reducing mechanical complexity.
Implementation Method 1
an axial magnetic coupling is provided in the shaft axis direction for transmitting motion from the another drive element to the bobbin winding unit
Implementation Method 2
holding the bobbin carrier stationary through a magnetic coupling
Data Source
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AI summary
Present invention is an improved version of a twisting machine disclosed in WO2005040465 and relates to a machine based on a magnetic coupling and capable of independently controlling twisting speed of a single or plurality of yarn(s) and winding speed of twisted yarns onto a bobbin and method of the same, the machine of the invention can also be used for yarn braking.