Magnetic Thread Guide Flap for Open-Position Yarn Handling
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Solution Overview
Problem
Existing yarn guide assemblies in ring spinning machines require manual or robotic intervention to maintain open positions during operations like re-spinning or doffing, which is inefficient and disrupts the spinning process.
Innovation Solution
A yarn guide arrangement with a magnetically held thread guide flap that remains in an open position using a pre-tensioned spring and a permanent magnet, allowing manual or automated control without disrupting the spinning process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If manual or robotic intervention is used to maintain open yarn guide positions, then the yarn guide can be kept open during operations, but operational efficiency decreases and downtime increases
Solution Approach 1:
The yarn guide assembly automatically maintains its open position through the magnetic attraction between the permanent magnet in the holding device and the ferromagnetic material in the yarn guide flap, eliminating the need for manual or robotic intervention during operations
Solution Approach 2:
The permanent magnet provides a counteracting magnetic force that balances the spring force and gravity, holding the yarn guide flap in the open position without requiring external intervention
2Reliability
If a pre-tensioned spring is used to press the thread guide flap into closed position, then the flap closes reliably during spinning, but manual intervention is required to keep it open during operations
Solution Approach 1:
The mechanical spring-based closing system is supplemented with a magnetic holding system that automatically maintains the open position, replacing the need for manual mechanical intervention with an automated magnetic field-based solution
Solution Approach 2:
The system dynamically balances two opposing forces - the spring force that closes the flap and the magnetic force that holds it open - allowing reliable automatic operation without manual intervention
3Ease of operation
If the thread guide flap is held open during doffing or re-spinning, then access to spindles is improved, but the spinning process is disrupted
Solution Approach 1:
The yarn guide assembly dynamically adapts its position - automatically opening during doffing or re-spinning operations to provide spindle access, then automatically closing during normal spinning to maintain process continuity, eliminating the need for manual position changes
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
Enables efficient and reliable maintenance of open yarn guide positions without manual or robotic intervention, enhancing operational efficiency and reducing downtime.
Implementation Method 1
A yarn guide arrangement with a magnetically held thread guide flap that remains in an open position using a pre-tensioned spring and a permanent magnet
Data Source
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AI summary
The invention relates to a thread guide arrangement (1) for a ring spinning machine comprising a holding device (3) that can be attached to a fastening device (2) of the ring spinning machine in a positionally and rotationally fixed manner, a thread guide flap (4), wherein the thread guide flap (4) is connected to the holding device (3) via a joint (5) and is pivotable relative to the fastening device between an open and a closed position, wherein the thread guide flap (4) is pressed into the closed position by a spring (6), and wherein the thread guide flap (4) is designed such that a thread guide element (7) can be mounted on it.The invention is characterized in that the thread guide assembly comprises a magnet (9) which can be attached in an area where the holding device (3) is fixed in position and rotation to the fastening device (2) and is positioned such that it is in operative contact with a thread guide flap (4) in an open position. Furthermore, a ring spinning machine equipped with a thread guide assembly and a kit for upgrading a spinning station of a ring spinning machine are proposed.