Vibrated Roller Dispenser for Uniform Particle Dosage
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Solution Overview
Problem
Existing devices for dispersing particles onto wood material panels suffer from poor control over particle dosage, uneven distribution, and excessive wear of steel rollers due to the use of abrasive particles, leading to increased costs and reduced quality over time.
Innovation Solution
A device with a container and a roller-like distributing element featuring a curved surface and a scatter opening, which is vibrated longitudinally to distribute particles uniformly without rotating the roller, eliminating the need for a brush roller and reducing wear through a rubber coating that enhances wear resistance and uniformity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a steel roller with pockets is used to disperse abrasive particles, then particle dispersion is achieved, but the steel roller suffers from excessive wear due to the toughness of abrasive particles like corundum
Solution Approach 1:
The patent applies a polymeric coating layer onto the steel roller, creating a composite structure where the steel core provides structural strength while the polymeric coating provides wear resistance. This composite material approach allows the roller to handle abrasive particles like corundum without suffering excessive wear, as the polymeric material is more resistant to abrasion from these particles compared to bare steel.
Solution Approach 2:
The polymeric coating acts as an intermediary layer between the steel roller and the abrasive particles. Instead of the abrasive particles directly contacting and wearing the steel roller, they interact with the polymeric coating first, which protects the steel substrate from direct abrasion and extends the roller's service life.
2Manufacturing precision
If a brush roller is used to brush out particles from pockets, then particle dispersion is improved, but the device complexity increases and maintenance requirements increase
Solution Approach 1:
The patent employs mechanical vibration of the roller to discharge particles from the pockets. The vibration causes particles to be shaken out of the pockets and deposited onto the substrate, eliminating the need for a separate brush roller mechanism. This simplifies the device structure while maintaining effective particle dispersion and reduces maintenance requirements.
Solution Approach 2:
Instead of using a brush to actively push particles out of the pockets, the invention inverts the approach by using vibration to passively shake the particles out. This reversal of the discharge mechanism simplifies the overall system by eliminating the brush roller component while achieving the same particle dispersion function.
3Productivity
If the steel roller rotates to convey particles, then particle dispersion along the surface is achieved, but control over particle dosage per time unit along the width is difficult
Solution Approach 1:
The patent makes the roller adjustable in terms of its rotational speed and vibration parameters, allowing dynamic control of particle dispersion. By adjusting the rotation speed and vibration frequency/amplitude, the system can precisely control the dosage of particles dispensed per unit time along the width, providing both high productivity and accurate dosage control.
Solution Approach 2:
The invention allows changing operational parameters such as rotation speed, vibration frequency, and vibration amplitude to control particle dosage. By adjusting these parameters, the system can optimize both the dispersion rate and the precision of particle dosage application, resolving the contradiction between productivity and measurement precision.
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 achieves controlled and uniform particle dispersion with reduced wear on the distributing element, allowing for cost-efficient operation and improved quality by using a vibrated steel roller with a rubber coating, effectively handling abrasive particles like corundum.
Implementation Method 1
There is further provided means by means of which the roller like distributing element can be put into vibration in longitudinal direction
Implementation Method 2
reducing wear through a rubber coating that enhances wear resistance and uniformity
Data Source
AI summary
The invention relates to a device (1) to disperse particles (12) onto a surface (46). To this aim, the device comprises a container (20) for the particles to be dispersed having at least one scatter opening (22) to dispend particles, a roller like distributing element (30) with a curved surface (36), and means (32) with which the roller like distributing element can be brought into vibration in longitudinal direction, such that particles (12) will be moved out of the scatter opening (22) over the curved surface (36) downwardly in the direction of the surface to be sprinkled.