Superconducting Ring Spindle for Friction-Free Twisting

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Solution Overview

Problem

The existing ring/traveler system in ring spinning machines is limited by frictional heat and wear, which restricts spindle speed and productivity, especially when spinning medium- and high-twist cotton and blended yarns, and requires costly individual spindle drives for efficient yarn piecing.

Innovation Solution

A superconducting magnetic bearing system with a stator and rotor arranged coaxially to the spindle, utilizing permanent magnets and superconducting materials for friction-free rotation, allowing for high-speed spindle operation and reducing wear by minimizing frictional contact during acceleration and deceleration phases.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If conventional ring/traveler system is used, then structure is simple and cost is low, but frictional heat and wear increase sharply at higher spindle speeds, limiting productivity

Engineering Contradiction:

Improvespindle speedVSAvoidfrictional heat and wear

Core Design Contradiction:

ProductivityVSObject-generated harmful factors

Solution Approach 1:

The patent replaces the conventional mechanical contact-based ring/traveler system with a magnetic field-based twisting mechanism. The traveler is equipped with a magnet that interacts with a stationary ring containing conductive segments, generating eddy currents that produce rotational force without physical contact. This substitution eliminates frictional heat and wear while enabling higher spindle speeds and improved productivity.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

2Reliability

If magnetic levitation is used to eliminate friction, then lifespan is extended and forces are reduced, but piecing time increases and installation cost increases

Engineering Contradiction:

Improvetraveler lifespanVSAvoidpiecing time

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The patent extracts the magnetic field generation function from the traditional mechanical friction-based system. By placing magnets on the traveler and using conductive segments on the stationary ring, the system creates a contactless magnetic interaction that eliminates wear while maintaining quick response during piecing operations, thus extending traveler lifespan without significantly increasing piecing time.

Inventive Principle:

Principle #2Taking out (Extraction)

3Productivity

If higher spindle speed is used, then productivity increases, but frictional forces generate heat that must be dissipated fast, causing substantial wear

Engineering Contradiction:

Improveyarn delivery speedVSAvoidfrictional heat

Core Design Contradiction:

ProductivityVSTemperature

Solution Approach 1:

The patent replaces mechanical friction with electromagnetic interaction. The magnet on the traveler induces eddy currents in the conductive segments of the stationary ring, creating a magnetic field that rotates the traveler without physical contact. This eliminates frictional heat generation entirely, allowing higher spindle speeds and yarn delivery rates without temperature-related wear problems.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

4Productivity

If contactless support is used, then friction is eliminated and productivity increases, but device complexity increases due to superconducting materials and cooling systems

Engineering Contradiction:

Improvespindle speedVSAvoidmagnetic levitation system complexity

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The patent uses a practical electromagnetic interaction system rather than complex superconducting magnetic levitation. A magnet on the traveler induces eddy currents in simple conductive segments mounted on the stationary ring, creating sufficient rotational force through magnetic field interaction without requiring superconducting materials or complex cooling infrastructure.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

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

This solution enables faster start-up and increased productivity of ring spinning machines, reduces installation and operation costs, and extends the lifespan of the traveler and ring by minimizing frictional heat and wear, while allowing for continuous yarn piecing without stopping the machine.

Implementation Method 1

the friction between the ring and the traveler is eliminated by magnetic levitation

Methodology Applied

Scientific EffectMagnetic levitation: Maglev

Implementation Method 2

a stator (210) comprising a superconducting material

Methodology Applied

Scientific EffectSuperconductivity: Superconductivity

Implementation Method 3

a rotor (220) configured to generate a magnetic field

Methodology Applied

Scientific EffectMagnetic field generation: Magnetism

Implementation Method 4

a stator cooling device (240) configured to cool the stator (210)

Methodology Applied

Scientific EffectThermal cooling: Cooling

Data Source

PatentUS20230079829A1Winding and twisting device for a ring spinning or ring twisting machine

Publication Date: 2023.03.16 SANKO TEKSTIL ISLETMELERI SANAYI VE TICARET AS

AI summary

The present invention provides a winding and twisting device for a ring spinning or ring twisting machine, comprising: a stator comprising a superconducting material, a stator cooling device, a rotor configured to generate a magnetic field, and a rotatable spindle, wherein the rotor and the stator are arranged co-axially to the spindle, and wherein the rotor has a ring/traveler system mounted thereon.