Distributor Device for Uniform Powder Compression Moulding
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing powder compression die filling methods often result in uneven powder distribution, leading to precision issues and mechanical damage, particularly in large thin parts and magnetic components, due to the limitations of traditional filling devices and techniques.
Innovation Solution
A distributor device with guide elements that divide the powder flow into sub-flows with varying cross-sectional areas, redistributing the mass flux to achieve a uniform distribution at the outlet, reducing the need for complex preparation procedures and maintaining product quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single feed hose is used to supply powder directly from a feed hopper to a filling shoe, then the apparatus design is simple, but the powder distribution becomes uneven with a maximum at the hose location
Solution Approach 1:
The single feed hose is segmented into multiple feed hoses that distribute powder to different locations of the filling shoe. This segmentation allows the powder to be distributed more evenly across the mould cavity, eliminating the single maximum at the hose location while maintaining relatively simple apparatus design.
Solution Approach 2:
Different locations of the filling shoe are provided with different numbers and configurations of feed hoses according to the specific filling requirements. This local quality approach ensures that areas requiring more powder receive additional hoses, achieving uniform powder distribution while avoiding unnecessary complexity in areas where less powder is needed.
2Manufacturing precision
If multiple feed hoses are used to improve powder distribution, then the powder distribution uniformity improves, but the apparatus design becomes complex with multiple corresponding maxima or undulated material thickness
Solution Approach 1:
The filling shoe is designed with varying numbers of feed hoses at different locations based on specific filling requirements. This local quality approach allows multiple hoses to be used where needed to improve distribution uniformity, while avoiding unnecessary hoses in other areas, thus preventing excessive apparatus complexity and undulated material thickness.
Solution Approach 2:
The filling shoe can be configured dynamically for different mould cavity shapes and sizes, with the number and arrangement of feed hoses adjusted according to the specific filling requirements. This dynamic configuration allows the system to achieve uniform powder distribution without permanent complex apparatus design for all possible scenarios.
3Device complexity
If traditional filling devices are used, then the apparatus design is simple, but the filling evenness deteriorates leading to precision issues and mechanical damage
Solution Approach 1:
The traditional single feed hose is segmented into multiple feed hoses that supply powder to different locations of the filling shoe. This segmentation improves filling evenness by eliminating the concentration of powder at a single location, thereby preventing precision issues and mechanical damage while maintaining relatively simple apparatus design.
Solution Approach 2:
The filling shoe acts as an intermediary device between the feed hopper and the mould cavity, with multiple feed hoses distributing powder evenly. This intermediary approach improves filling evenness and reliability by preventing direct concentration of powder at single points, thereby avoiding mechanical damage to tools while requiring only moderate apparatus complexity.
4Manufacturing precision
If complex filling procedures with multiple steps including weighing and apportionment are used, then the powder distribution can be controlled, but the device complexity increases with many moving parts requiring maintenance
Solution Approach 1:
Instead of using complex weighing and apportionment equipment, the system segments the powder flow into multiple feed hoses that distribute powder simultaneously to different locations. This segmentation achieves controlled powder distribution without the need for multiple moving parts, weighing mechanisms, or complex apportionment devices, thereby maintaining manufacturing precision while reducing device complexity and maintenance requirements.
Solution Approach 2:
The complex mechanical weighing and apportionment system is replaced by a simplified feed hose distribution system that relies on fluid dynamics and pressure equalization to achieve uniform powder distribution. This substitution eliminates many moving parts requiring maintenance while maintaining or improving powder charge distribution control.
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 distributor device ensures efficient and uniform powder distribution across the mould cavity, enhancing production throughput and precision, reducing mechanical stress on tools, and improving the homogeneity of the final product.
Implementation Method 1
the distributor portion (130) comprises one or more guide elements (231, 232) arranged to divide the distributor portion (130) into a plurality of distributor channels (240, 250), each distributor channel (240, 250) having an input (241, 251) with an input cross-sectional area at an upstream end of the distributor channel (240, 250) and an output (242, 252) with an output cross-sectional area at a downstream end of the distributor channel (240, 250), wherein the input cross-sectional area differs from the output cross-sectional area for at least one of the distributor channels (240, 250)
Data Source
AI summary
A distributor device for use in a filling shoe for filling a mould cavity of a powder compression die, the distributor device having an inlet portion connectable to a powder supply; an outlet portion with an outlet opening; and a distributor portion arranged between the inlet portion and the outlet portion. The distributor portion includes one or more guide elements arranged to divide the distributor portion into a plurality of distributor channels. The distributor channels have an input with an input cross-sectional area at an upstream end of the distributor channel and an output with an output cross-sectional area at a downstream end of the distributor channel, wherein the input cross-sectional area differs from the output cross-sectional area for at least one of the distributor channels.