Replaceable Thread Eyelet for Flat Knitting Machines
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Solution Overview
Problem
Current flat knitting machines face inefficiencies due to the need to replace entire thread guides when switching to different yarn diameters or repairing damaged parts, leading to increased downtime and production losses, as well as high storage costs for various thread guides.
Innovation Solution
A thread guide design with a detachable thread eyelet that uses rigid legs and a self-locking mechanism, allowing for separate exchange of the thread eyelet without removing the thread guide arm, preventing accidental loosening and enabling easy installation and removal without additional fastening means.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the entire thread guide is replaced when changing yarn diameter or repairing damage, then the thread guide can be adapted to different requirements, but the downtime and production losses increase significantly
Solution Approach 1:
The thread guide is divided into two separable components: the thread guide arm and the thread eyelet. The thread eyelet can be independently replaced by detaching it from the thread guide arm, while the thread guide arm remains on the machine. This segmentation allows quick replacement of only the worn or damaged component without removing the entire thread guide assembly, thereby reducing downtime while maintaining adaptability to different yarn diameters through interchangeable eyelets.
2Loss of time
If the thread eyelet is made detachable for easy replacement, then replacement time is reduced, but the thread eyelet may become loose or detach accidentally during operation
Solution Approach 1:
The connection between the thread guide arm and thread eyelet is designed to be dynamically adjustable. During installation, the legs of the thread guide arm are spread apart to allow insertion of the thread eyelet. Once inserted, the legs automatically spring back to their original position, creating a secure locking engagement. This dynamic mechanism provides both easy replacement and reliable operation, as the connection transitions from a loose insertion state to a firmly locked state during normal use.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This design reduces downtime and production losses by allowing for quick and efficient replacement of thread eyelets, eliminating the need for entire thread guide replacement and minimizing storage requirements for different thread guides.
Implementation Method 1
The locking element can be elastic. The locking element can protrude into the receptacle. When the thread eyelet is inserted, the locking element can be displaced by the thread eyelet or a corresponding tool and then move into a locking position due to its elasticity.
Data Source
Figure 1a~1c
Figure 2a~3b
Figure 4~6
AI summary
The invention relates to a yarn guide (20), suitable for a knitting machine, in particular a flat knitting machine, with a yarn guide arm (3), at the free end of which a yarn eyelet (5) can be detachably fastened without damage, wherein the yarn guide arm (5) has two legs (6a, 6b) at its free end which form a receptacle (6) for the yarn eyelet (5), wherein the legs (6a, 6b) are designed to be rigid and at least one locking element (7a, 7b, 7a', 7b') for locking the yarn eyelet (5) to the yarn guide (20) is arranged in the area of the receptacle (6).