Flat Knitting Machine Thread Guide Dynamics for Complex Fabrics
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Solution Overview
Problem
Flat knitting machines with autonomously driven thread guides have primarily been used for producing intarsia knits, limiting their application to more complex knitted fabrics.
Innovation Solution
A method utilizing independently driven thread guides and multiple knitting systems to create intricate patterns, such as imitation filigree and openwork designs, by allowing thread guides to be moved relative to the lock and between systems, enabling the production of knitted fabrics with varied thread arrangements across different needle bed areas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If flat knitting machines with autonomously driven thread guides are used for producing intarsia knits, then strict adherence to color field stitch borders is achieved, but the application to more complex knitted fabrics is limited
Solution Approach 1:
The patent applies dynamics by making the thread guides movable relative to the lock and between knitting systems. This allows the same physical hardware to dynamically change its operational configuration, enabling complex knitted fabrics to be produced without permanently adding more knitting systems. The thread guides can be positioned in different areas (first, second, third needle bed areas) and assigned to different knitting systems as needed, providing versatility while maintaining device simplicity.
Solution Approach 2:
The patent implements universality by enabling thread guides to serve multiple functions across different knitting systems and needle bed areas. The same thread guide can knit with different knitting systems in different areas, and needles can be plated to work with different thread guides. This multi-functionality allows complex patterns like imitation filigree and openwork designs to be produced using the same physical infrastructure, expanding application scope without increasing device complexity.
2Adaptability or versatility
If thread guides are moved between knitting systems to produce complex patterns, then production versatility is improved, but control complexity increases
Solution Approach 1:
The patent applies segmentation by dividing the knitting process into distinct needle bed areas (first, second, and third areas) with specific functions. Thread guides are moved between predetermined positions corresponding to these areas rather than allowing arbitrary movement. This segmented approach simplifies control by providing discrete, manageable positions and sequences for thread guide relocation, making the complex operation more tractable while still enabling versatile pattern production.
Solution Approach 2:
The patent implements preliminary action by pre-plating needles in specific needle bed areas before knitting operations begin. The plating process prepares the needles in advance to receive specific thread guides, so when thread guides need to be moved between knitting systems, the target needles are already prepared and positioned correctly. This preliminary preparation simplifies the subsequent thread guide movement and knitting operations, reducing control complexity.
Data Source
Figure 1a~3b
Figure 2a~2d
AI summary
In a process for producing a knitted fabric on a flat knitting machine with independently driven yarn guides and at least two knitting systems, a stitch, catch or float is formed in a first needle bed area (4, 14, 24, 44) with a first yarn guide with a first yarn (1, 11, 21, 41) and a first knitting system, and a stitch, catch or float is formed in the same knitting direction in the same needle bed area (4, 14, 24, 44) with a second yarn guide with a second yarn (2, 12, 22, 42) and a second knitting system.