Co-Molded Coffee Grinder Assembly for Precise Burr Positioning
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Solution Overview
Problem
Existing coffee grinding devices for machines face challenges in achieving high precision assembly while being economical and easy to produce, which affects the quality of ground coffee.
Innovation Solution
The use of co-molding technique to create a single block comprising a plastic support and a grinder body, with anchoring projections or undercuts for secure anchoring, allowing for high dimensional precision and simplifying assembly, enabling precise positioning and adjustment of grinding members.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If traditional separate assembly of grinder and plastic support is used, then production and assembly are simple and economical, but assembly precision and positioning accuracy are insufficient
Solution Approach 1:
The patent combines the grinder body and plastic support into a single integrated component through co-molding, eliminating the need for separate assembly operations. This merging of previously separate parts directly improves assembly precision while the co-molding process maintains manufacturing simplicity and economy.
Solution Approach 2:
The patent uses composite materials by co-molding plastic material around a metal or ceramic grinder insert, creating a hybrid component that combines the advantages of different materials. This approach achieves high precision positioning while maintaining ease of manufacture through the integrated molding process.
2Manufacturing precision
If high precision assembly is required for grinder positioning, then quality of ground coffee is improved, but production cost and assembly complexity increase
Solution Approach 1:
By merging the grinder and support into a single co-molded component, the patent eliminates complex multi-step assembly procedures while achieving precise positioning. The integrated structure ensures proper alignment is built-in during molding rather than requiring complex post-assembly adjustments.
Solution Approach 2:
The co-molding process performs the positioning action preliminarily during manufacturing, embedding the precise positioning features directly into the molded part. This preliminary action eliminates the need for complex precision assembly operations later in the manufacturing process.
3Reliability
If grinder and support are assembled separately, then manufacturing is economical, but coupling stability and durability are reduced
Solution Approach 1:
The patent merges the grinder and support into a single integrated component through co-molding, creating permanent bonds that eliminate coupling instability issues. This merging approach improves reliability while the efficient molding process keeps manufacturing costs competitive.
Solution Approach 2:
By using composite materials in the co-molded structure, the patent creates strong mechanical bonds between the plastic support and grinder insert. The composite construction provides superior coupling stability and durability compared to separate assembled parts, while remaining cost-effective through integrated manufacturing.
Data Source
AI summary
A grinding member for a device for grinding coffee includes a grinder with a grinding surface. A single co-molded block is formed including the grinding member with a support made of plastic material.