Vibratory Feeder Plate Composite Structure for Uniform Powder Delivery
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Solution Overview
Problem
Existing vibratory feeders experience uneven spatial distribution of powdered ingredients due to complex motion patterns on the feeder plate, leading to inconsistencies in the delivery of powders across the width of the plate.
Innovation Solution
The use of a composite feeder plate structure with a second layer of material having voids, such as metal foams or ceramics, to increase stiffness without increasing mass, combined with optional additional layers to minimize deformation and ensure uniform particle delivery.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a traditional solid feeder plate is used, then the plate has sufficient stiffness, but the plate exhibits complex motion patterns and surface deformation leading to uneven powder distribution
Solution Approach 1:
The feeder plate uses a composite structure with a solid outer layer and a cellular core (such as foam or honeycomb structure). This composite design provides the necessary stiffness to reduce surface deformation and ensure uniform powder distribution, while the cellular core contributes to vibration damping and motion control.
Solution Approach 2:
The feeder plate incorporates a cellular core structure that provides localized stiffness and damping properties. The cellular structure is strategically designed to control vibration patterns and minimize surface deformation in critical areas, ensuring uniform powder delivery without requiring the entire plate to be uniformly thick or dense.
2Manufacturing precision
If the feeder plate mass is increased to reduce vibration and improve powder distribution, then powder distribution uniformity improves, but the device complexity and mass increase
Solution Approach 1:
The composite structure with cellular core provides high stiffness-to-weight ratio, achieving the necessary vibration control and powder distribution uniformity without requiring a solid plate of equivalent mass. The cellular structure efficiently distributes mechanical stresses while minimizing overall weight.
Solution Approach 2:
The cellular core (foam or honeycomb structure) acts as a porous material that provides vibration damping and motion control. This porous structure achieves the desired particle delivery consistency by controlling plate vibration patterns while maintaining low mass, as the porous structure provides structural support with minimal material density.
3Productivity
If internal material is added to create relative motion between top and bottom layers, then particle movement is enhanced, but additional degrees of freedom of motion are introduced causing non-uniform particle delivery
Solution Approach 1:
The composite structure with cellular core provides controlled vibration damping that prevents excessive relative motion between plate layers. The cellular structure acts as a mechanical coupling that allows necessary particle movement while maintaining sufficient rigidity to prevent chaotic motion patterns, ensuring uniform particle delivery.
Solution Approach 2:
The cellular core structure changes the mechanical parameters of the feeder plate, specifically the damping ratio and stiffness distribution. This parameter optimization allows the plate to vibrate in controlled patterns that enhance particle movement while maintaining uniform delivery, avoiding the chaotic motion that would result from excessive layer independence.
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 composite structure achieves a more uniform powder distribution by reducing surface deformation and enhancing the consistency of particle delivery across the feeder plate, minimizing waste and ensuring even distribution of ingredients.
Implementation Method 1
a second layer of material having voids, such as metal foams or ceramics
Implementation Method 2
The use of a composite feeder plate structure with a second layer of material having voids
Implementation Method 3
The plate is vibrated, typically by an electromagnet provided with an alternating voltage acting on a magnetically-susceptible element attached to the plate
Implementation Method 4
an electromagnet provided with an alternating voltage acting on a magnetically-susceptible element
Implementation Method 5
The induced vibration in the plate, causes the powder to move along the plate and fall off an edge
Data Source
Figure 1~2(B)
Figure 3~4(B)
Figure 5
AI summary
A vibratory feeder having a feeder plate comprising a layered structure of a solid material and a material containing voids, such as a metal foam, sintered metal or glass, a ceramic, a foamed polymer, an aerogel or an arrangement of spacers. Scarf plates are particularly described.