Sand Core Hopper Breaker Strings for Lump-Free Material Flow
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Sand core manufacturing machines face issues with lump formation due to hygroscopic properties of sand and binder/additive materials, leading to imperfections in the final product.
Innovation Solution
A sand core making machine with a hopper containing breaker assemblies comprising strings that vibrate to break up lumps, followed by a filtering assembly to ensure only small particles reach the mold, ensuring the production of defect-free sand cores.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a filter mesh is used to limit lump size, then the size of lumps reaching the final mixture is controlled, but the filter mesh requires additional components and complexity
Solution Approach 1:
The patent applies mechanical vibration through an actuator that vibrates the hopper body, causing the breaker assemblies to vibrate and interact with each other to break lumps. This vibration-based approach eliminates the need for filter meshes while achieving effective lump size control through dynamic mechanical action rather than static filtration structures.
2Manufacturing precision
If breaker assemblies with strings are used to break lumps, then lump breaking effectiveness is improved, but the device complexity increases
Solution Approach 1:
The patent merges multiple breaker assemblies within the hopper body, allowing them to interact with each other during vibration. This combination of multiple simple string-based breakers creates a coordinated system that achieves effective lump breaking without requiring complex individual components, as the simplicity of each string breaker allows for easy integration and interaction.
3Manufacturing precision
If vibration is applied to break lumps, then lump breaking is achieved, but energy consumption increases
Solution Approach 1:
The breaker assemblies are designed to utilize the vibration energy already present in the hopper system. The strings are positioned and tensioned to naturally resonate and interact with each other during hopper vibration, converting the bulk vibration into localized breaking actions without requiring additional energy input specifically for the breaking mechanism.
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 effectively breaks up lumps and ensures that only small particles enter the mold, resulting in high-quality sand cores without imperfections.
Implementation Method 1
the actuator is associated with the main body of the hopper to cause the shaking of the main body
Implementation Method 2
the strings of the two breaker assemblies vibrate and the breaker assemblies interact with each other to break up the lumps of material
Implementation Method 3
the breaker assemblies strike the lumps during this tendency, breaking them
Data Source
AI summary
A sand core making machine that includes a hopper having a hollow body with an inner surface delimiting a passageway for a material used in the manufacture of a sand core. The hopper includes a plurality of breaker assemblies with each breaker assembly having at least one string. The ends of a string are attached to corresponding attachment points of the inner surface of the hollow body, such that the strings are arranged in a flow passage of the material. At least two breaker assemblies are spaced apart such that the two breaker assemblies interact with each other to break lumps of the material supplied to the hopper when the hollow body is shaken.