Brush-Assisted Liquid Spreading for Rivet Sealing
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Solution Overview
Problem
Existing application devices can only eject and adhere application liquids to surfaces, but not effectively smear or spread them uniformly, especially for application liquids with high viscosity like sealing liquids, which are needed for improved adhesion and automation in manufacturing processes.
Innovation Solution
An application device equipped with a brushing mechanism that first adheres a predetermined amount of application liquid to a target surface using a nozzle and then spreads it using a brush bristle bundle, which can be adjusted in speed and direction to accommodate various surface shapes, ensuring uniform coverage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If only ejection and adhesion of application liquid is performed without spreading mechanism, then device complexity is reduced, but manufacturing precision and uniformity of application liquid distribution deteriorate
Solution Approach 1:
The patent combines the ejection function (nozzle) and spreading function (brush) into a single integrated application device. The brush unit with bristles is positioned adjacent to the nozzle, allowing the liquid to be ejected and immediately spread in one coordinated action, rather than requiring separate devices or manual intervention for spreading.
Solution Approach 2:
The brush bristles act as an intermediary element between the ejected liquid and the target surface. The bristles receive the liquid from the nozzle and transfer it to the surface in a controlled spreading motion, ensuring uniform distribution while maintaining relatively simple device architecture.
2Reliability
If high viscosity application liquid is used for better sealing performance, then adhesion and sealing quality are improved, but ease of operation and uniform spreading deteriorate
Solution Approach 1:
The patent replaces manual spreading operations with an automated brush mechanism. The brush unit is driven by a drive mechanism that controls its movement across the target surface, eliminating the need for manual manipulation while effectively handling high-viscosity liquids that would be difficult to spread uniformly by hand.
Solution Approach 2:
The brush bristles are designed with specific parameters (length, density, flexibility) that enable them to effectively pick up and spread high-viscosity liquids. The drive mechanism also controls the speed and pressure parameters of brush contact with the surface, optimizing the spreading process for viscous materials.
3Adaptability or versatility
If manual spreading process is used for high viscosity liquids, then adaptability to different surfaces is maintained, but productivity and process efficiency deteriorate
Solution Approach 1:
The brush unit is designed with dynamic characteristics that allow it to adapt to different surface geometries. The bristles can flex and conform to curved or irregular surfaces while the drive mechanism maintains controlled movement. This dynamic design enables automated operation across various surface types without sacrificing adaptability.
Solution Approach 2:
The application device integrates multiple functions into a single system: liquid ejection, liquid spreading, and adaptation to different surfaces. The brush unit serves as a universal spreading mechanism that can handle various viscosity levels and surface types, eliminating the need for separate manual operations or multiple specialized tools.
Data Source
AI summary
Provided is an application device for applying and spreading an application liquid to and on a predetermined application area of a target surface, which is capable of smearing the application liquid on the application area. The application device (D) includes a brush unit (4) having a brush bristle bundle (41a), and performs a step of causing, while moving a nozzle orifice (32a) of a dispenser (3) along at least a portion of the surface of a rivet (S1) and an area of a wall (Sp) surrounding the base of the rivet (S1), a sealing liquid to be ejected from the nozzle orifice (32a) and to adhere to the portion, and thereafter, a step of spreading the adhering sealing liquid by causing the brush bristle bundle (41a) to slide on the surface of the rivet (S1) and the area of wall (Sp) surrounding the base of the rivet (S1).