Brewing Unit Composite Structure for Stable Low-Wear Coffee Makers
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Solution Overview
Problem
Coffee machines face challenges in maintaining dimensional and temperature stability, as well as wear reduction, due to the use of a single material for both support and functional elements, which fails to meet the diverse requirements of the brewing and grinding processes.
Innovation Solution
The use of different materials for support and functional elements, where metal is used for high stability and plastic for improved sliding properties, with the outsert technique allowing for injection molding of plastic elements onto metal support elements, enhancing dimensional and temperature stability and reducing wear.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the same material is used for both support elements and functional elements, then manufacturing is simplified, but dimensional stability and temperature resistance are compromised
Solution Approach 1:
The component is divided into two separate parts: a support element made of metal and a functional element made of plastic. These are manufactured separately and then combined through injection molding, allowing each material to be optimized for its specific function while maintaining manufacturing efficiency
Solution Approach 2:
The invention uses a composite structure combining metal support elements with plastic functional elements. The metal provides dimensional and temperature stability, while the plastic provides sliding properties, creating a hybrid component that leverages the advantages of both materials
2Stability of the object's composition
If metal is used for support elements to ensure dimensional stability, then stability is improved, but sliding properties of functional elements deteriorate
Solution Approach 1:
Different regions of the component have different material properties: the support element region uses metal for stability, while the functional element region uses plastic for sliding. This localized material selection optimizes each region for its specific requirement
Solution Approach 2:
The component combines metal and plastic materials in a single integrated structure, allowing the metal support elements to provide dimensional stability while the plastic functional elements provide the necessary sliding properties for operation
3Reliability
If plastic is used for functional elements to improve sliding properties, then wear is reduced, but temperature resistance and dimensional stability deteriorate
Solution Approach 1:
The component is segmented into a metal support element that handles temperature and structural requirements, and a plastic functional element that handles sliding and wear requirements. This separation allows each material to excel at its designated function
Solution Approach 2:
The hybrid metal-plastic structure allows the plastic functional elements to provide wear resistance through their sliding properties while the metal support elements provide the necessary temperature resistance and dimensional stability
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 approach results in a coffee machine with reduced tolerances, increased stability, precision, and extended service life, as the metal support elements provide high dimensional and temperature stability, while the plastic elements improve sliding properties, effectively addressing the wear and tear issues.
Implementation Method 1
the functional elements are attached or molded onto the carrier element in a separate manufacturing step. Plastic functional elements molded onto it, which, for example, must have particularly good sliding properties, are formed on the carrier element by injection molding from a suitable plastic.
Implementation Method 2
The support element, which essentially extends in an extension plane, can, for example, represent a flat, plate-like side wall of a brewing unit. As a rule, it should have high dimensional stability and, if necessary, temperature stability. It is therefore made of a corresponding, optimally suitable metal.
Implementation Method 3
As a rule, it should have high dimensional stability and, if necessary, temperature stability.
Implementation Method 4
The requirements for the material of such a plastic element then essentially consist of ensuring sliding with as little wear as possible.
Implementation Method 5
The requirements for the material of such a plastic element then essentially consist of ensuring sliding with as little wear as possible.
Data Source
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AI summary
The invention relates to an automatic coffee maker having an automated unit housing and separate functional units arranged therein, comprising at least one carrier element (1) having functional elements (2) made of plastic attached thereto. Furthermore, according to the invention, the plastic function elements (2) are extruded onto the carrier element (1). The invention further relates to a corresponding brewing unit (13).