Plastic Clamping Tie for Contamination-Free Pipe Docking

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Solution Overview

Problem

Existing methods for connecting pipes or flanges, such as tri-clamp connections, are complex, expensive, and often not suitable for contamination-free connections between different material combinations like plastic and metal, with a need for cost-effective and user-friendly solutions that can handle various materials and applications.

Innovation Solution

A 360° clamping tie made entirely of plastic, designed for single-use, which can be easily opened and closed, and used with ergonomic cable tie pliers for secure clamping of pipes or flanges, allowing for a wide range of applications and automated contamination-free connections.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If traditional tri-clamp connections are used to connect pipes or flanges, then a secure connection is achieved, but the device complexity and manufacturing cost increase

Engineering Contradiction:
Improveconnection securityVSAvoidclamp structure complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The clamp is divided into two functional halves: a rigid semi-circular clamp body that provides structural support, and a flexible binding agent that provides the clamping force. This segmentation allows each component to be optimized for its specific function while reducing overall complexity

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The binding agent is designed as a single-use disposable component that is replaced after each connection cycle. This eliminates the need for complex adjustment mechanisms and maintenance, reducing device complexity while maintaining reliable connections

Inventive Principle:
Principle #27Cheap short-living objects (Disposable)

2Stress or pressure

If traditional clamps with multiple adjusting elements are used, then uniform contact pressure is achieved, but the ease of operation decreases

Engineering Contradiction:
Improvecontact pressure uniformityVSAvoidclamp operation simplicity
Core Design Contradiction:
Stress or pressureVSEase of operation

Solution Approach 1:

The flexible binding agent automatically distributes the clamping force uniformly around the pipe circumference through its elastic deformation, eliminating the need for manual adjustment mechanisms. The material self-adjusts to achieve optimal contact pressure distribution

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The binding agent's flexibility and elastic properties enable it to adapt to different pipe diameters and shapes, automatically adjusting the clamping parameters to achieve uniform contact pressure without requiring manual intervention

Inventive Principle:
Principle #35Parameter changes

3Reliability

If complex docking methods are used for contamination-free connections, then sealing performance is improved, but the ease of manufacture and cost increase

Engineering Contradiction:
Improvesealing performanceVSAvoidmanufacturing simplicity
Core Design Contradiction:
ReliabilityVSEase of manufacture

Solution Approach 1:

The binding agent is manufactured as a simple disposable plastic component using injection molding, eliminating the need for complex sealing mechanisms. The single-use nature ensures contamination-free connections while keeping manufacturing simple and costs low

Inventive Principle:
Principle #27Cheap short-living objects (Disposable)

Solution Approach 2:

The flexible binding agent acts as a thin film that conforms to the pipe surface, providing effective sealing through its elasticity rather than through complex mechanical sealing structures, thereby simplifying manufacturing

Inventive Principle:
Principle #30Flexible shells and thin films

4Adaptability or versatility

If reusable clamps with adjustment mechanisms are used, then adaptability to different materials is improved, but the ease of operation and safety decrease

Engineering Contradiction:
Improvematerial combination compatibilityVSAvoidhandling simplicity
Core Design Contradiction:
Adaptability or versatilityVSEase of operation

Solution Approach 1:

The clamp design with a rigid semi-circular body and flexible binding agent provides universal applicability to different pipe materials (plastic, metal, composite) and diameters. The flexibility of the binding agent allows it to adapt to various material combinations while maintaining simple operation through the lever mechanism

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The manual adjustment mechanisms of traditional clamps are replaced with a simple lever-operated binding agent system. The elastic properties of the binding agent substitute for complex mechanical adjustment devices, improving ease of operation while maintaining adaptability

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

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 provides a cost-effective, easy-to-use, and resilient clamping mechanism that ensures secure and contamination-free connections between pipes or containers, suitable for various material combinations, with the ability to be automated and safe.

Implementation Method 1

The binding element 10 can be closed around an axis A, preferably in a stepped, locking manner, similar to a cable tie. During a closing process, one closing side 12 of the binding element 10 is extended from the stretched position into the closed position

Methodology Applied
Scientific EffectElastic deformation: Elasticity

Data Source

PatentEP3350496B1Clamping-action arrangement and also docking method and coupling method
Publication Date: 2023.10.11 ANDOCKSYSTEME G UNTCH GMBH
  • EP3350496B1 patent drawingFigure 1
  • EP3350496B1 patent drawingFigure 2~3
  • EP3350496B1 patent drawingFigure 4~6

AI summary

The invention relates to a clamping-action tie (1), in particular for docking two lines (2, 3) or flanges (4), which consists of at least one flexible tie (10) with a closure end (20) and a free end (30), which should be connected to the closure end (20), which tie (10) can be closed in a stepped manner, with latching action, or stepless manner around an axis (A), wherein at least one closing side (12) of the tie (10) is intended to interact mechanically with the closure end (20) during a closing operation, wherein the closing side (12) and/or a further side of the tie (10), in the form of a clamping side (16), has at an axial (A) spacing apart from one another over the length of the tie (10), at at least two circumferential locations, at least two roughly radially inwardly directed elevations (32, 34) directed towards a tied article which runs radially inwards in the direction of the axis (A), wherein a clamping region (30) is made between each interacting arrangement of elevations.