Ceramic Nozzle Core Insert for Stress-Resistant Thread Crimping

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Existing stuffer-box crimping devices and nozzle cores are costly, sensitive to mechanical and thermal stress, and complex in design, making them difficult to maintain and repair.

Innovation Solution

A molded part for a nozzle core with a ceramic body and planar surface, featuring a cavity for forming a nozzle duct and open receiving contours for fastening means, which allows for easy assembly and stress equalization, and a nozzle design with metallic flanges and elastic elements for thermal separation and precise positioning.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Strength

If traditional metallic molded parts are used for nozzle cores, then mechanical strength is improved, but thermal sensitivity and sensitivity to mechanical stress increase

Engineering Contradiction:

Improvemechanical strengthVSAvoidthermal sensitivity

Core Design Contradiction:

StrengthVSReliability

Solution Approach 1:

The patent employs a composite construction where a ceramic insert (providing thermal stability) is integrated within a metallic housing (providing mechanical strength). This composite approach allows each material to contribute its superior properties while compensating for its weaknesses, resolving the contradiction between mechanical strength and thermal sensitivity.

Inventive Principle:

Principle #40Composite materials

2Adaptability or versatility

If complex nozzle core designs are used, then crimping functionality is improved, but ease of manufacture and maintenance deteriorate

Engineering Contradiction:

Improvecrimping functionalityVSAvoidease of manufacture

Core Design Contradiction:

Adaptability or versatilityVSEase of manufacture

Solution Approach 1:

The nozzle core is divided into separate modular components: a metallic housing, a ceramic insert, and interchangeable nozzle elements. This segmentation allows each component to be manufactured independently using optimal processes, simplifies assembly, and enables easy replacement of individual parts for maintenance or functionality changes.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The standardized housing and mounting interfaces are designed to accommodate different ceramic inserts and nozzle configurations, creating a universal platform that can perform multiple crimping functions while maintaining simple manufacturing and maintenance procedures.

Inventive Principle:

Principle #6Universality (Multi-functionality)

3Strength

If traditional fastening methods are used, then mechanical connection is improved, but stress peak generation increases

Engineering Contradiction:

Improvemechanical connectionVSAvoidstress peaks

Core Design Contradiction:

StrengthVSObject-affected harmful factors

Solution Approach 1:

The ceramic insert acts as an intermediary element between the metallic housing and the nozzle components. It distributes mechanical and thermal stresses uniformly across the connection interface, preventing stress concentration and peak generation while maintaining strong mechanical connection through the integrated fastening system.

Inventive Principle:

Principle #24Intermediary (Mediator)

Data Source

PatentUS11913484B2Molded part for a nozzle core, nozzle core and stuff-crimping device for crimping, expansion kit, locking device and setting element as well as method therefor

Publication Date: 2024.02.27 HEBERLEIN TECHNOLOGY AG

AI summary

The invention focuses on a molded part (12) for a nozzle core (60) for stuffer-box crimping of threads. The molded part includes a ceramic body (121) with a planar surface (122). Receiving contours (124) for receiving fastening means (50) are arranged in the planar surface (122). The receiving contours (124) are open in the lateral direction.