Raschel Machine Chain Drum Segmentation for Warp Knitting
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Solution Overview
Problem
Conventional Raschel machines are limited in producing varied ground structures due to a small diameter ground guide chain drum, resulting in simplified designs and limited unit chain combinations, which restricts the complexity and variety of warp knitted fabrics.
Innovation Solution
The solution involves remodeling the Raschel machine by linking additional ground guidebars with separate chain drums, allowing for longer chain operations and increased unit chain combinations, enabling the knitting of network structures with various shapes and patterns, such as quadrangular, diamond, and hexagonal mesh shapes, and arranging unit structures in zigzag or parallel configurations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a small diameter ground guide chain drum is used in a Raschel machine, then the machine structure remains simple and compact, but the number of combined unit chains is limited and ground structure design is simplified
Solution Approach 1:
The patent divides the ground guide chain drum into multiple segments by providing both a first ground guide chain drum and a second ground guide chain drum. This segmentation allows each drum to be optimized independently and enables a greater total number of unit chains to be combined, thereby increasing ground structure design variety while maintaining manageable complexity in each individual drum.
Solution Approach 2:
The patent transitions from a single-drum configuration to a multi-drum arrangement, effectively adding a dimensional aspect to the chain drum system. This dimensional change allows for increased capacity and design variety without requiring a single excessively large drum that would create other mechanical problems.
2Adaptability or versatility
If the number of unit chains combined with the chain is increased to create varied ground structures, then design variety improves, but the chain length must be extended which complicates the chain mechanism
Solution Approach 1:
Instead of using one extremely long chain with many unit chains on a single drum, the patent segments the chain system across multiple drums. Each drum carries a manageable number of unit chains, and the chains are distributed among the drums, thereby achieving high design variety without requiring excessively long individual chains that would complicate the mechanism.
Solution Approach 2:
The patent employs multiple ground guidebars (first, second, and third ground guidebars) that can be independently operated by the chain mechanism. This dynamic arrangement allows different combinations of guidebars to be activated for different design patterns, achieving versatility without increasing chain length or complexity.
3Adaptability or versatility
If multiple ground guidebars are linked with separate chain drums, then longer chain operations and increased unit chain combinations are enabled, but the device complexity increases
Solution Approach 1:
The patent designs the multiple ground guide chain drums and ground guidebars to serve multiple functions. The same chain mechanism operates multiple guidebars, and the system can produce various ground structures (different mesh shapes, patterns, and configurations) using the same basic components, thereby reducing the need for additional specialized equipment.
Solution Approach 2:
The patent combines multiple ground guidebars (first, second, and third ground guidebars) with the chain-driven mechanism in an integrated system. By merging these components into a coordinated arrangement where the chain mechanism controls multiple guidebars that work together, the system achieves increased versatility without proportionally increasing overall complexity.
Data Source
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AI summary
Provided are warp knitting fabrics having a ground organization expressing various design patterns. The warp knitting fabrics comprise: a ground organization formed with warps knitted into a loop shape; and a pattern organization knitted on the ground organization, wherein two or more unit designs continuously arranged in the transverse direction in the ground organization, each of the unit designs comprises two or more unit organizations arranged in the longitudinal direction, the unit organizations comprising a specific shape of a network formed by a chain of a specific chain number group comprising an array of a plurality of chain numbers, and the unit organizations have a different shape of a network formed by a chain of a different chain number group from one another, respectively.