Brush Unit with Dual-Function Abrasive Stopping Means
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Solution Overview
Problem
Existing brush units with rotational bristle systems face challenges in efficiently combining the functions of braking bristles for percussive processing and regrounding bristle tips, resulting in bulky and impractical designs.
Innovation Solution
The stopping mechanism is designed to serve both as a brake and a grinding element, allowing for the stored kinetic energy to be used for surface processing and simultaneously regrounding bristle tips without additional components, by utilizing different surface areas for stopping and grinding functions, and adjusting based on rotation direction and position.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a separate grinding body is added to the brush unit with stopping means, then the bristles can be reground to maintain processing quality, but the device becomes bulky and impractical
Solution Approach 1:
The patent combines the stopping means and grinding body into a single integrated component. The stopping means serves dual functions: it acts as a stopper to brake the bristles for percussive processing and simultaneously serves as a grinding body with abrasive surfaces to reground the bristle tips. This merging eliminates the need for separate grinding devices while maintaining both functions.
Solution Approach 2:
The stopping means is designed as a multi-functional component that performs both stopping/braking and grinding operations. By equipping the stopping means with abrasive surfaces or by having it press against an abrasive surface, it can both decelerate the bristles and sharpen their tips, making the device more versatile without adding complexity.
2Manufacturing precision
If traditional sandblasting is used for surface processing, then effective surface treatment is achieved, but environmental pollution and high plant engineering outlay occur
Solution Approach 1:
The patent replaces the sandblasting mechanical system with a bristle-based percussive processing system. Instead of using high-velocity abrasive particles (sandblasting), the system uses kinetic energy of rotating bristles that are braked by the stopping means to deliver controlled impacts to the surface. This substitution eliminates environmental pollution from blasting media while achieving similar surface treatment effects.
Solution Approach 2:
The patent changes the processing parameters from continuous sandblasting to periodic percussive impacts. The bristles are rotated to build up kinetic energy, then braked for a specific time to store energy, and finally released to deliver concentrated percussive blows to the surface. This parameter change enables effective surface treatment without the harmful effects of traditional sandblasting.
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
This design enables efficient percussive processing and tip regrounding, achieving comparable results to sandblasting without blasting media, reducing complexity and environmental impact, while maintaining a compact and cost-effective structure.
Implementation Method 1
the bristles are braked for a specific time with the aid of the stopping means. After the bristles have been released by passing the stopping means, the kinetic energy stored as a result
Implementation Method 2
the grinding area can be designed or formed in such a way that it reliably performs its grinding function through grinding particles made of, for example, diamond, corundum or comparable grinding bodies that are applied to the stop means
Implementation Method 3
the kinetic energy stored as a result, ie the bristles and/or a brush belt, can be used. This is used for additional beating processing of a surface of a material with the help of the bristles
Data Source
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AI summary
The present invention relates to a brush unit (3) and to an associated rotary brush tool. The brush unit (3) is equipped with a brush holder (10, 11), which can be driven in rotation, and with an annular brush (4, 5) with a bristle-covered rim (8) with outwardly protruding bristles (5). Furthermore, a stop means (14) which dips into the rotating bristle-covered rim (8) is provided. According to the invention, the stop means (14) simultaneously acts as an abrasive body (14) for the bristles (5). In this case, a distinction is made between both functions (stopper function and abrasive function) according to a direction of rotation (R) of the annular brush (4, 5) and/or a setting position of the stop means (14) as compared to the bristle-covered rim (8).