Double Raschel Jacquard Guide Alignment for Warp Knit Color Regions
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Solution Overview
Problem
Conventional double raschel warp knitting machines experience misalignment of color regions due to differing jacquard guide positions, affecting the beauty of the warp knitted fabric.
Innovation Solution
A double raschel warp knitting machine with synchronized jacquard guides across half-gauge bars and coordinated ground guide bars to ensure uniform yarn placement, allowing for a beautiful surface pattern.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If different colors of yarns are supplied to four half-gauge jacquard bars respectively, then color variety is improved, but misalignment between color regions occurs due to different jacquard guide positions
Solution Approach 1:
The patent combines the functions of multiple half-gauge jacquard bars into a unified full-gauge jacquard bar structure. By merging the guide positions of all four half-gauge bars to align at the same locations, the system achieves proper color region alignment while maintaining the ability to supply different colored yarns through the integrated structure.
Solution Approach 2:
The full-gauge jacquard bar serves multiple functions simultaneously: it provides guide positions for all four color yarns, ensures proper alignment across the fabric width, and maintains the jacquard knitting capability. This universal structure replaces the need for separate half-gauge bars while achieving both color variety and alignment precision.
2Area of stationary object
If jacquard guides are alternately arranged on half-gauge jacquard bars, then coverage of knitting needles is improved, but misalignment between color regions occurs
Solution Approach 1:
The patent merges the alternately arranged guide positions of multiple half-gauge bars into a single full-gauge jacquard bar where all guides are positioned to align with the same knitting needle positions. This combination maintains comprehensive needle coverage while ensuring that guides for different colored yarns align at identical locations, preventing color region misalignment.
3Adaptability or versatility
If four half-gauge jacquard bars are used, then knitting flexibility is improved, but device complexity increases
Solution Approach 1:
The patent reduces device complexity by merging four separate half-gauge jacquard bars into a single full-gauge jacquard bar. This consolidation simplifies the mechanical structure, reduces the number of components, and lowers complexity while maintaining the flexibility to knit different patterns and colors through the unified bar's multiple guide positions.
Solution Approach 2:
The single full-gauge jacquard bar performs the functions of four half-gauge bars simultaneously. It provides guide positions for four different colored yarns, maintains knitting flexibility for various patterns, and reduces structural complexity. This universal component achieves multi-functionality without requiring multiple separate bars.
Data Source
AI summary
A double raschel warp knitting machine including: a pair of frontside jacquard bars JB2, 3 and a pair of backside jacquard bars JB4, 5 as jacquard bars, in which each of the frontside jacquard bars JB2, 3 and the backside jacquard bars JB4, 5 is a half-gauge jacquard bar; and at least one frontside ground guide bar GB1 provided on the front side of the frontside jacquard bars JB2, 3 and at least one backside ground guide bar GB6, 7, 8 provided on the back side of the backside jacquard bars JB4, 5, as ground guide bars. The double raschel warp knitting machine is characterized in that the four half-gauge jacquard bars have jacquard guides at the same positions in the width direction of the knitting machine.