Modular Yarn Guide for Variable Needle-Pitch Feeding
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Solution Overview
Problem
Existing flat-knitting machines face limitations in adapting thread guides to different needle pitches, thread numbers, and thread types due to non-adjustable and non-interchangeable thread guide components, limiting the creation of complex patterns and specialized fabric properties.
Innovation Solution
A modular thread guide system with interchangeable middle and outer modules, adjustable thread feed elements, and a protective housing, allowing adaptation to various needle pitches, thread numbers, and thread types, with horizontal and vertical movement capabilities for precise thread guidance and protection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If standard thread guide eyelets are used to guide threads to knitting needles, then thread guidance is achieved, but thread separation and adaptation to different needle pitches are not possible
Solution Approach 1:
The thread guide is divided into a modular structure with a first module containing guide needles, a second module with thread guide eyelets, and interchangeable middle modules. This segmentation allows each module to perform specific functions and enables reconfiguration for different needle pitches and thread configurations without redesigning the entire thread guide system.
Solution Approach 2:
The thread guide is designed as a universal system that can handle multiple thread types (knitting threads, elastane threads, warp, weft, standing threads) and adapt to different needle pitches through interchangeable middle modules. The same basic structure serves multiple purposes by simply changing the middle module configuration.
2Adaptability or versatility
If the number of guide needles is increased to feed more separate threads, then thread feeding capability is improved, but the rigidity of the thread guide structure prevents adaptation to different needle pitches
Solution Approach 1:
The thread guide is divided into discrete modules that can be independently configured. The middle modules can be exchanged to change the number of guide needles and their spacing, allowing adaptation to different needle pitches and thread counts without manufacturing new rigid structures.
Solution Approach 2:
The thread guide transitions from a rigid, fixed configuration to a dynamic, reconfigurable system. The interchangeable middle modules enable the thread guide to adapt its structure based on the required number of threads and needle pitch, providing manufacturing flexibility.
3Adaptability or versatility
If thread feed tubes are attached to gusset rails as an additional device, then warp or weft thread feeding is achieved, but the non-adjustable nature limits versatility
Solution Approach 1:
The thread guide incorporates adjustable and interchangeable components, including middle modules that can be replaced and thread feed elements that can be repositioned. This dynamic design allows the same device to accommodate different thread types (knitting threads, elastane threads, warp, weft, standing threads) and different operational requirements.
Solution Approach 2:
The thread guide is designed as a universal feeding system that can handle multiple thread types and configurations through its adjustable and interchangeable components, eliminating the need for separate non-adjustable devices for different thread types.
4Stability of the object's composition
If the thread guide structure is made rigid to maintain stability, then structural stability is achieved, but adaptation to different needle pitches and thread configurations becomes impossible
Solution Approach 1:
The thread guide is segmented into stable outer modules (first and second modules) and interchangeable middle modules. This segmentation maintains structural stability of the overall system while allowing flexible reconfiguration through module exchange, resolving the conflict between rigidity and adaptability.
Data Source
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AI summary
A knitting or warp knitting machine with at least one yarn guide (100) movable along a yarn guide rail (101), which has a yarn guide arm (120) at the lower end of which a yarn guide element (4) with several yarn feed elements (41) for feeding yarns to knitting needles of the flat knitting machine is arranged, wherein the yarn guide (100) is formed from at least three detachably connected modules (1, 2, M), of which two outer modules (1, 2) are provided with rollers for hanging in a yarn guide rail (101) and enclose a middle, replaceable module (M) between them, which includes a support part (7) of the yarn guide arm for the yarn guide element (4).