Flecage Knitting Method for Deep Necklines
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Solution Overview
Problem
Conventional flechage knitting methods face limitations in the number of courses that can be performed, leading to restricted design options and conspicuous border portions in knitted fabrics, particularly with the use of tucks which result in double stitches and reduced yarn mobility.
Innovation Solution
A flechage knitting method utilizing a flat knitting machine with forward and backward needle beds, where stitches are transferred between beds, allowing for increased courses and inconspicuous border portions by winding yarn hooked portions around turn-back point stitches, thereby enhancing yarn mobility and reducing stitch doubling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If conventional flechage knitting with tuck is performed repeatedly, then the neckline depth can be increased, but the number of times of flechage knitting is limited due to yarn mobility restriction
Solution Approach 1:
The patent extracts the problematic tuck structure from the knitting process. Instead of forming double stitches through tuck at turn-back points, the invention transfers stitches between needle beds and forms single stitches only, eliminating the yarn mobility restriction caused by doubled yarn in conventional methods.
Solution Approach 2:
The patent inverts the conventional approach by not performing tuck at turn-back points. Instead of holding yarn doubly in the same needle, the invention transfers the turn-back stitch to an empty needle on the opposite needle bed, allowing the yarn to remain single and mobile throughout the flechage knitting process.
2Productivity
If conventional flechage knitting with tuck is performed, then the knitting process can be completed, but conspicuous border portions with double stitches are formed
Solution Approach 1:
The patent removes the tuck operation from the knitting process. By transferring stitches between needle beds and forming single stitches at turn-back points instead of double stitches through tuck, the conspicuous border portions are eliminated while the knitting process continues efficiently.
3Length of moving object
If the number of times of flechage knitting is increased, then deeper neckline can be formed, but stitches are pushed upward causing knitting operation failure
Solution Approach 1:
The patent extracts the tuck operation that causes stitch pushing. By forming single stitches through needle bed transfer instead of double stitches through tuck, the stitches are not pushed upward, maintaining reliable knitting operation even with increased number of flechage knitting cycles for deeper necklines.
Data Source
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AI summary
A flechage knitting method capable of increasing the number of courses in which flechage knitting can be performed as compared with conventional flechage knitting using tuck. The following steps are carried out to wind a first yarn hooked portion 13 connecting a stitch 11 at a dead end of first forward knitting and a stitch 12 at a starting point of first backward knitting around a first turn-back point stitch 18 in a base course S: step S1 of transferring the first turn-back point stitch 18 of the base course S to an empty needle c of an opposed needle bed; step S2 of performing the first forward knitting, and crossing the first yarn hooked portion 13 connecting to the stitch 11 at the dead end of the first forward knitting with the first turn-back point stitch 18 in a knitting width direction; step S3 of returning the first turn-back point stitch 18 transferred to the empty needle to a knitting needle of an opposite needle bed; and step S4 of forming a stitch 12 on the stitch 11 at the dead end of the first forward knitting to perform the backward knitting with this stitch 12 serving as a starting point.