Yarn Feed Module With Restrain Element for Clean Roller Detachment
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Solution Overview
Problem
Yarn filaments often stick to the drive roller during yarn supply, leading to incomplete yarn pickup and potential breakage, particularly in tufting and weaving machines without puller rollers, and existing solutions are complex or inefficient.
Innovation Solution
A yarn feed module with a drive roller and a guide element, featuring a restrain element arranged between the drive roller and the guide element to ensure the yarn detaches from the drive roller, preventing filaments from sticking and ensuring smooth yarn supply.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the drive roller has a rough mantle surface to prevent yarn slippage, then the grip on yarn is sufficient, but yarn filaments stick to the drive roller and do not detach at the desired moment
Solution Approach 1:
The drive roller surface is segmented into two distinct zones: a rough zone for gripping the yarn and a smooth detach zone for releasing it. This segmentation allows the drive roller to perform both functions - providing sufficient grip to prevent slippage while also creating a smooth surface area where yarn can easily detach without sticking
Solution Approach 2:
Different surface qualities are applied to different locations on the drive roller. The majority of the surface maintains roughness for grip, while a specific local area (the detach zone) has smooth properties. This local quality change enables the yarn to be gripped during transport and then smoothly released at the appropriate location without sticking to the roller
2Object-generated harmful factors
If existing solutions are used to prevent yarn sticking (detaching units, auxiliary rollers, vibration generators), then yarn sticking is prevented, but the device complexity increases
Solution Approach 1:
The drive roller is given multiple functions: it provides grip through its rough surface, transports the yarn along its circumference, and releases the yarn through the smooth detach zone. By making the drive roller multi-functional, the patent eliminates the need for separate auxiliary rollers, detaching units, or vibration generators that would otherwise be required to prevent yarn sticking
Solution Approach 2:
The gripping function and the releasing function are merged into a single component - the drive roller. Instead of having separate components for gripping and releasing, the drive roller's surface is designed to provide both functions at different locations, simplifying the overall device structure while effectively preventing yarn sticking
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
The restrain element effectively separates filaments from the drive roller, ensuring complete yarn pickup and preventing yarn breakage, while maintaining a simple and efficient yarn supply process.
Implementation Method 1
the mantle surface of such a drive roller typically has a degree of roughness in order to avoid slippage of the yarn over this mantle surface
Implementation Method 2
a guide element which is arranged behind the drive roller viewed in the supply direction in order, during supplying of the yarn, to guide the yarn by contact therewith so that the supply direction is adjusted by the guide element
Implementation Method 3
a restrain element which, viewed in the supply direction, is arranged between the drive roller and the guide element in order to ensure that the yarn detaches from the drive roller on supplying of the yarn
Data Source
AI summary
The invention concerns a yarn feed module for supplying yarn into a textile machine, including a drive roller for supplying the yarn, a guide element for guiding the yarn, and a restrain element that is arranged between the drive roller and the guide element in order to ensure that, on supplying of the yarn, the yarn detaches from the drive roller. The invention also concerns a textile machine including such a yarn feed module.