Hollow Cylindrical Ring Insert for Adjustable Fiber Inlet in Rotor Spinning

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Existing opening roller housings in open-end rotor spinning devices are not adaptable to varying spinning conditions and fiber materials, with complex designs and fixed annular gaps limiting their versatility.

Innovation Solution

A structurally simple and easily replaceable hollow cylindrical ring insert is used in the opening roller housing, allowing adjustment of the fiber inlet area and dirt separation opening size by varying the ring's inner diameter, enabling adaptation to different spinning conditions and fiber types.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If an interchangeable insert is used to adapt the dissolving roller housing to different fiber materials and spinning conditions, then the adaptability is improved, but the device complexity increases

Engineering Contradiction:

Improveadaptability to different fiber materials and spinning conditionsVSAvoidcomplexity of the insert design

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The dissolving roller housing is divided into a stationary housing and an interchangeable insert that can be removed and replaced. This segmentation allows the insert to be optimized for specific functions (dirt separation, fiber inlet) while keeping the overall structure simple and manageable.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The insert serves multiple functions simultaneously: it forms the dirt separation opening, defines the fiber inlet area, and adjusts the annular gap between the dissolving roller and housing. This multi-functionality reduces the need for multiple separate components, simplifying the overall device while maintaining high adaptability.

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Adaptability or versatility

If the insert extends into the area of the dirt separation opening to partially form the circumferential wall, then the dirt separation can be adjusted, but the design complexity of the insert increases

Engineering Contradiction:

Improveadjustability of dirt separationVSAvoidcomplexity of insert design

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The insert is designed with different wall thicknesses in different areas: a first wall section with a specific thickness for the dirt separation area and a second wall section with a different thickness for the fiber inlet area. This local variation in geometry allows optimized performance for each function while keeping the insert as a single, relatively simple component.

Inventive Principle:

Principle #3Local quality

3Stability of the object's composition

If the outer contour of the insert is flush with the inner surface of the circumferential wall, then the insert integrates well with the housing, but the annular gap between the dissolving roller and insert cannot be adjusted

Engineering Contradiction:

Improveintegration of insert with housingVSAvoidadjustability of annular gap

Core Design Contradiction:

Stability of the object's compositionVSAdaptability or versatility

Solution Approach 1:

The insert is designed with adjustable features that allow the annular gap between the dissolving roller and the insert to be varied. The insert can be positioned at different radial distances from the dissolving roller axis, enabling dynamic adjustment of the processing gap to optimize performance for different operating conditions.

Inventive Principle:

Principle #15Dynamics

4Adaptability or versatility

If a complex insert design is used to achieve adjustable dirt separation and fiber inlet area, then the adaptability is improved, but the ease of manufacture decreases

Engineering Contradiction:

Improveadjustability of fiber inlet area and dirt separationVSAvoidease of manufacture of insert

Core Design Contradiction:

Adaptability or versatilityVSEase of manufacture

Solution Approach 1:

The insert is designed with key parameters (wall thicknesses, opening sizes, radial position) that can be easily varied during manufacturing to accommodate different spinning conditions. This parametric design approach allows standard manufacturing processes to produce inserts with different specifications without requiring complex tooling or assembly procedures.

Inventive Principle:

Principle #35Parameter changes

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 solution allows for flexible adjustment of the fiber inlet area and dirt separation, enhancing the adaptability of the opening roller housing to various fibers and spinning conditions, ensuring effective cleaning of yarns and easy maintenance.

Implementation Method 1

Dirt, such as dust, nits, shell remnants, or the like, is flung out through this opening in the case of natural fibers like cotton or cotton/synthetic fiber blends

Methodology Applied

Scientific EffectCentrifugal force: Centrifugal Force

Data Source

PatentEP3620558B1Opening roller housing for an opening device of an open-end rotor spinning device

Publication Date: 2022.11.02 SAURER SPINNING SOLUTIONS GMBH & CO KG

Figure 1
Figure 2
Figure 3

AI summary

The invention relates to a dissolving roller housing (17) of a dissolving device (26) of an open-end rotor spinning device (1) with a feed opening (27) for feeding the fiber sliver, with a discharge opening (29) for removing fibers from the dissolving roller housing (17), and with a dirt separation opening (28) in the circumferential wall (39) of the dissolving roller housing (17), wherein the dissolving roller housing (17) comprises an interchangeable insert (40). According to the invention, the insert (40) is designed as a hollow cylindrical ring (41) which has in the cylinder wall (42) at least one wall region with an opening (44) and a trough-shaped fiber inlet (45) into the discharge opening (29) and a wall region with an opening (46) for adjusting the dirt separation opening (28). The insert (40) sets the annular gap between the dissolving roller housing (17) of a dissolving roller (21) by means of the thickness of its cylinder wall (42).