Shuttle Embroidery Machine Magnetic Spacing Control
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Solution Overview
Problem
Shuttle embroidery machines face issues with irregular embroidery patterns and thread breakage due to shuttle oscillation and inadequate clearance between driver nails and the shuttle, which is exacerbated by varying thread thicknesses, requiring frequent adjustments and increased acceleration forces.
Innovation Solution
Incorporating magnets with the same polarity at the rear end of the shuttle and the front driver nail to maintain a consistent clearance, allowing the needle thread to pass unhindered and reducing shuttle oscillation through magnetic repulsion, ensuring smooth thread movement and preventing jamming.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the shuttle play is reduced to improve embroidery precision, then the needle thread runs the greater risk of being jammed or braked, but this requires frequent adjustments by the operator
Solution Approach 1:
The magnet system automatically maintains the optimal clearance between the driver nail and shuttle, eliminating the need for manual adjustments by the operator. The magnetic force self-regulates the spacing to ensure consistent thread passage throughout the embroidery process.
Solution Approach 2:
The invention introduces a magnetic field parameter to control the physical spacing between components. By using magnetic repulsion force, the system dynamically maintains the optimal clearance distance without mechanical adjustment, adapting to different operating conditions automatically.
2Manufacturing precision
If magnets with the same polarity are placed at the rear end of the shuttle and front driver nail, then the clearance is maintained consistently, but the shuttle oscillation must be reduced through magnetic repulsion
Solution Approach 1:
The magnetic repulsion force acts as a counterbalancing force against the oscillatory motion of the shuttle. The like-polarity magnets create a repulsive magnetic field that stabilizes the shuttle position, counteracting the forces that cause dancing and oscillation during high-speed operation.
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 allows for consistent embroidery with threads of different thicknesses without adjustments, reduces shuttle oscillation, and minimizes thread breakage by maintaining a stable clearance and reducing contact with driver nails, resulting in improved embroidery quality and reduced operational noise.
Implementation Method 1
Incorporating magnets with the same polarity at the rear end of the shuttle and the front driver nail to maintain a consistent clearance, allowing the needle thread to pass unhindered and reducing shuttle oscillation through magnetic repulsion
Data Source
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AI summary
A shuttle embroidery machine having a shuttle guide has, for each embroidery position, a rear-side driver nail (11, 11') and a front-side driver nail (9, 9') for guiding a shuttle (5). The embroidery machine comprises, at each embroidery position, a shuttle race (3) and the shuttle (5) comprises a shuttle thread for embroidering. At the rear end (16) of the shuttle (5), a magnet (37) is fitted in a region on which the rear-side driver nail (11) acts. The rear-side driver nail (11) contains a magnet (35) or a ferromagnetic material, wherein the magnet (37) and the rear-side driver nail (11) have the same polarity, such that the shuttle (5) is repelled by the rear-side driver nail (11).