Two-Component Cartridge With Interchangeable Inner Container
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Solution Overview
Problem
Existing two-component cartridges face issues with fixed mixing ratios, storage stability, and uncertainty in component mixing during application, especially when components have similar colors or are chemically unstable.
Innovation Solution
A two-component cartridge design featuring an outer tube and inner tube with an interchangeable inner container, allowing separate storage and filling of components, enabling adjustable mixing ratios and improved storage stability through exchangeable inner and outer tubes and containers with varying capacities and cross-sectional areas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If both components are stored in a single cartridge from the beginning, then handling is simplified, but storage stability deteriorates due to premature mixing and chemical reactions
Solution Approach 1:
The cartridge is divided into separate holding volumes (inner container and outer chamber) that are physically separated by a partition wall with a mixing barrier. This segmentation allows each component to be stored independently in its own compartment, preventing premature chemical reactions while maintaining the ability to mix components during application.
Solution Approach 2:
The components are pre-filled into separate holding volumes before use, with the mixing barrier already in place to prevent premature mixing. The system is prepared in advance with both components separated and stable, ready for controlled mixing only when needed during the application process.
2Ease of manufacture
If the mixing ratio is fixed by design, then manufacturing is simplified, but adaptability deteriorates as different application cases require different mixing ratios
Solution Approach 1:
The system transitions from a fixed mixing ratio design to a dynamic, adjustable mixing ratio system. The inner container can be exchanged for different sizes, and the plunger can be positioned at different depths, allowing the mixing ratio to be adapted to different application requirements while maintaining a relatively simple cartridge structure.
Solution Approach 2:
The mixing ratio is changed by varying physical parameters such as the volume of the inner container, the cross-sectional area of the outlet opening, and the plunger position. These parameter changes allow different mixing ratios to be achieved without fundamentally redesigning the cartridge structure.
3Measurement precision
If components are dyed for visual indication of mixing, then mixing quality detection is improved, but the mixture color may not meet specific application requirements
Solution Approach 1:
The system uses color changes as an indicator of mixing quality through the mixing barrier, which allows visual confirmation that components have been properly mixed. This color indication function is separate from the final mixture color, enabling both mixing verification and customization of the actual mixture color for different applications.
Solution Approach 2:
The mixing barrier acts as an intermediary element that provides visual feedback about mixing quality without permanently altering the final mixture color. It mediates between the need for mixing verification and the requirement for specific mixture colors in different applications.
4Ease of operation
If cartridge housings are stored with both components pre-filled, then readiness for use is improved, but storage stability deteriorates due to longer storage time requirements
Solution Approach 1:
The cartridge housing is segmented into an outer chamber and an inner container that can be separately filled and stored. This allows the cartridge housing with the first component to be stored for extended periods without degradation, while the second component in the inner container can be freshly prepared closer to the time of use.
Solution Approach 2:
The cartridge housing is preliminarily prepared with the first component and the structural elements (inner tube, mixing barrier) in advance, but the second component is added later via the exchangeable inner container. This preliminary preparation maintains readiness while extending storage stability by avoiding premature contact between both components.
Data Source
Figure 1~3
Figure 4~6
Figure 7
AI summary
The invention relates to the design and functionality of a two-component cartridge (1). This cartridge comprises an outer tube (2) and an inner tube (3) located within the outer tube (2). It further comprises an inner chamber (12) enclosed by the inner tube (3) and an outer chamber (11) formed between the inner tube (3) and the outer tube (2), the outer chamber (11) serving to hold a first component. The cartridge (1) is characterized in that an inner container (8), which serves to hold the second component, can be inserted into the inner chamber (12).