Textile Workstation Paraffinization Offset for Thread Tension

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Solution Overview

Problem

Existing textile machine work stations with waxing devices face issues of thread deflection and centrifugal forces causing uneven paraffin application and thread tension fluctuations, leading to incomplete waxing and potential thread loss, which results in uneven yarn processing and quality issues.

Innovation Solution

The work station design offsets the take-up mandrel and upstream thread guide element laterally to counteract thread deflections and centrifugal forces, ensuring consistent thread guidance and contact with the paraffin body, using adjustable lateral offsets and additional thread guide elements to maintain thread alignment and tension.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If the thread is guided in a fixed path over the face of the paraffin body by stationary guides, then the thread guidance is simple and stable, but the central area of the paraffin body does not come into contact with the thread and the paraffin is not removed evenly

Engineering Contradiction:
Improvethread guidance simplicityVSAvoidparaffin removal uniformity
Core Design Contradiction:
Ease of operationVSManufacturing precision

Solution Approach 1:

The patent applies dynamics by making the thread guide elements movable instead of stationary. The upstream thread guide element can move laterally relative to the paraffin body, allowing the thread path to dynamically adjust and ensure continuous contact with the central area of the paraffin body, thereby achieving uniform paraffin removal while maintaining guidance simplicity.

Inventive Principle:
Principle #15Dynamics

2Reliability

If the paraffin body rotates freely or is externally driven, then the paraffin application is improved, but thread tension fluctuations occur and thread may be lost during traversing

Engineering Contradiction:
Improveparaffin application qualityVSAvoidthread tension instability
Core Design Contradiction:
ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent applies preliminary anti-action by positioning the upstream thread guide element laterally offset from the center plane of the paraffin body rotation. This pre-positioning creates a geometric arrangement that counteracts the centrifugal forces and thread deflections that would otherwise cause thread loss and tension fluctuations during traversing, allowing reliable paraffin application without harmful side effects.

Inventive Principle:
Principle #9Preliminary anti-action

3Stability of the object's composition

If the take-up mandrel is positioned in the center plane of thread traversing, then the thread path is symmetric and stable, but thread deflections and centrifugal forces cause uneven waxing and thread loss

Engineering Contradiction:
Improvethread path stabilityVSAvoidwaxing uniformity
Core Design Contradiction:
Stability of the object's compositionVSManufacturing precision

Solution Approach 1:

The patent applies asymmetry by deliberately positioning the upstream thread guide element laterally offset from the center plane of the paraffin body rotation. This asymmetric positioning creates a thread path that compensates for centrifugal forces and deflections during traversing, ensuring the thread maintains proper contact with the paraffin body surface for uniform waxing application.

Inventive Principle:
Principle #4Asymmetry

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 configuration reduces thread tension fluctuations and prevents thread loss during traversing, ensuring uniform paraffin application and extended usage of the paraffin body, thereby improving yarn quality and processing consistency.

Implementation Method 1

the rotation of the paraffin body exerts a centrifugal force on the thread in the region of the paraffin body, which forces the thread away from the take-up mandrel of the paraffining device

Methodology Applied
Scientific EffectCentrifugal force: Centrifugal Force

Implementation Method 2

the thread running through then causes the paraffin body to rotate due to its friction on the paraffin body

Methodology Applied
Scientific EffectFriction: Friction

Data Source

PatentEP2915767B1Workstation of a textile machine with a paraffinization device
Publication Date: 2017.01.04 SAURER GERMANY GMBH & CO KG
  • EP2915767B1 patent drawing
  • EP2915767B1 patent drawing
  • EP2915767B1 patent drawing

AI summary

The present invention relates to a workstation (12) of a textile machine with a paraffinization device (20) for a cable (2). The paraffinization device (20) comprises a wax body (22) and a receiving core shaft (21). In order to paraffinize the cable (2), the wax body is guided from the sides of lower part or the upper part of the receiving core shaft (21). The workstation (12), in view of the moving direction of the cable, is provided with guiding components (5, 25) arranged at the upper stream of the paraffinizaiton device (25). A cable horizontal device (6) is provided at the back of the paraffinization device. In terms of the cable horizontal central plane, the receiving core shaft and the cable are in bias arrangement, or rather, the upper stream guiding components are in bias arrangement with regard to the cable and the receiving core shaft.