Offset Knitting Yarn Guide with Inclined Plate

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Solution Overview

Problem

In offset knitting, the yarn guide apparatus fails to reliably feed all filaments to the knitting needle, leading to filament loosening and breakage, especially when the knitting needle's movement or knit structure changes, resulting in defective fabric production.

Innovation Solution

A yarn guide apparatus with a guide plate that projects downward and is inclined, positioned to guide the yarn close to the knitting point, preventing filament loosening and ensuring stable yarn feeding, while allowing the latch to open without contact, and allowing for detachable integration with the main body.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Device complexity

If offset yarn feeding is used to avoid contact between yarn guide apparatus and knitting needle, then the structure is simplified and production cost is reduced, but the yarn is not controlled between the yarn outlet and knitting point causing filament loosening and breakage

Engineering Contradiction:
Improvestructure complexityVSAvoidyarn feeding reliability
Core Design Contradiction:
Device complexityVSReliability

Solution Approach 1:

A guide plate is introduced as an intermediary component between the yarn outlet and knitting point. The guide plate includes a guide surface that extends from the yarn outlet toward the knitting point, providing a controlled path for the yarn without requiring contact with the knitting needle. This mediator structure ensures yarn stability while maintaining the offset feeding configuration.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Reliability

If the yarn guide apparatus is positioned on the movement line of the knitting needle, then the yarn can be fed reliably, but the knitting needle and yarn guide apparatus come into contact causing abrasion and damage

Engineering Contradiction:
Improveyarn feeding reliabilityVSAvoidabrasion and damage
Core Design Contradiction:
ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The yarn guide apparatus is segmented into distinct functional components: the main body containing the yarn outlet, and the separate guide plate with the guide surface. This segmentation allows the guide plate to be positioned offset from the knitting needle's movement line, providing yarn guidance without contact, while the main body remains stationary for reliable yarn supply.

Inventive Principle:
Principle #1Segmentation

3Reliability

If the distance from yarn outlet to knitting point is shortened in ordinary knitting mode, then filament loosening is prevented, but the yarn guide apparatus cannot be disposed at the ordinary position in some knitting machines

Engineering Contradiction:
Improveyarn feeding stabilityVSAvoidmachine configuration adaptability
Core Design Contradiction:
ReliabilityVSAdaptability or versatility

Solution Approach 1:

The solution transitions from a one-dimensional approach (positioning the yarn guide directly on the knitting needle's movement line) to a two-dimensional approach (extending a guide surface from the yarn outlet toward the knitting point along an offset path). This dimensional change allows the yarn guide apparatus to be positioned in locations that would be inaccessible in ordinary knitting configurations, thereby improving machine adaptability while maintaining yarn feeding stability through the extended guide surface.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

Data Source

PatentEP2428600B1Yarn guide apparatus for offset knitting
Publication Date: 2017.03.01 PRECISION FUKUHARA WORKS LTD
  • EP2428600B1 patent drawing
  • EP2428600B1 patent drawing
  • EP2428600B1 patent drawing

AI summary

A yarn guide apparatus for offset knitting is provided that enables a knitting needle to reliably receive all filaments constituting a yarn at a knitting point even in offset yarn feeding, and enables a yarn to be stably fed without coming off the knitting point due to a change in the knit structure or the like. The yarn guide apparatus feeds a yarn to a knitting needle from a position offset from the movement line of the knitting needle in a knitting machine. The apparatus includes a yarn guide apparatus main body that is provided with a yarn inlet and a yarn outlet, and a guide plate that is disposed at a lower side portion of the yarn guide apparatus main body. A yarn that has been pushed into a knitting needle is guided by the guide plate up to a position immediately before a knitting point.