Enclosed Multi-Component Dispensing for Precise Ratio Mixing

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Solution Overview

Problem

The manual mixing of multi-component materials, particularly in automotive body repair materials, leads to inconsistent component ratios, incomplete mixing, air entrapment, and foreign matter introduction, affecting the curing process and quality of the finished product.

Innovation Solution

A mobile, enclosed dispenser system that mixes and dispenses multi-component materials with varying viscosities and ratios, ensuring uniform mixing and minimal air entrapment, using a mixing chamber with multiple inlets and an outlet to facilitate precise control over the mixing process.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If manual mixing is used to dispense multi-component materials, then the process is simple and requires minimal equipment, but the component ratios become inconsistent and mixing completeness deteriorates

Engineering Contradiction:

Improvesimplicity of mixing processVSAvoidcomponent ratio consistency

Core Design Contradiction:

Ease of manufactureVSManufacturing precision

Solution Approach 1:

The patent introduces a computer as an intermediary between the user and the mixing process. The computer receives user input for desired component ratios, stores reference ratios in its memory, and automatically controls the dispensing quantities of each component based on this data, thereby ensuring consistent and precise mixing ratios without manual measurement errors

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The patent replaces the manual mechanical mixing process with an automated computer-controlled system. Instead of manually measuring and mixing components, the computer calculates and controls the exact quantities of each component to be dispensed, substituting human judgment and manual operation with automated computational control to achieve precise ratio consistency

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

2Device complexity

If manual mixing is used, then equipment complexity is reduced, but mixing completeness and uniformity deteriorate

Engineering Contradiction:

Improvenumber of mixing equipmentVSAvoidmixing uniformity

Core Design Contradiction:

Device complexityVSManufacturing precision

Solution Approach 1:

The patent replaces manual mechanical mixing operations with computer-controlled automated dispensing. The computer system precisely controls the quantity and flow of each component being mixed, ensuring uniform and complete mixing without requiring complex mechanical mixing devices or multiple pieces of equipment

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The computer system performs the mixing control functions autonomously by automatically calculating required quantities, controlling dispensing rates, and monitoring the mixing process based on stored reference ratios and user specifications, eliminating the need for manual intervention and simple mechanical equipment

Inventive Principle:

Principle #25Self-service

3Ease of operation

If open container mixing is used, then the process is accessible and easy to operate, but air entrapment and foreign matter introduction increase

Engineering Contradiction:

Improveaccessibility of mixing processVSAvoidair entrapment and contamination

Core Design Contradiction:

Ease of operationVSObject-affected harmful factors

Solution Approach 1:

The patent employs a closed container system that creates a controlled environment for mixing components. This closed system prevents air from entering the mixing chamber and eliminates exposure to external contaminants, thereby avoiding air entrapment and foreign matter introduction while maintaining ease of operation through automated processes

Inventive Principle:

Principle #39Inert atmosphere (Inert environment)

4Adaptability or versatility

If previously used equipment is used for mixing, then equipment availability is improved, but foreign matter contamination increases

Engineering Contradiction:

Improveequipment availabilityVSAvoidforeign matter contamination

Core Design Contradiction:

Adaptability or versatilityVSObject-affected harmful factors

Solution Approach 1:

The patent uses a closed container system that isolates the mixing process from the external environment. This closed environment prevents foreign matter from contaminating the mixed material, even when using equipment that has been previously used, by eliminating exposure to dirt and other contaminants during the mixing operation

Inventive Principle:

Principle #39Inert atmosphere (Inert environment)

Solution Approach 2:

The patent extracts the mixing process from the external environment by implementing a closed container system. This separation removes the mixing operation from potential sources of contamination, allowing the use of available equipment while preventing foreign matter introduction through the closed system design

Inventive Principle:

Principle #2Taking out (Extraction)

Data Source

PatentUS12558659B2Mixing and dispensing curable multi-component materials

Publication Date: 2026.02.24 3M INNOVATIVE PROPERTIES CO

AI summary

Methods, apparatus, devices and systems for mixing and dispensing multi-component materials. The mixing and dispensing may be performed using a mobile, enclosed dispenser that can be used to supply a mixed multi-component material at the point of use. In some embodiments, the components to be mixed into the multi-component material may be supplied in cartridges.