Multilayer Polishing Pad with Segmented Reinforcement
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Solution Overview
Problem
Existing floor polishing and grinding pads lack improved durability and performance, particularly in maintaining consistency and reducing wear on floors due to inflexibility and premature reinforcement wear.
Innovation Solution
A multilayer reinforcement pad assembly featuring a flexible base pad with a polymeric and metallic reinforcement ring, including scallops or recesses for clearance, and multiple abrasive tools attached to the metallic ring, which allows for flexibility with floor imperfections while maintaining rigidity through the polymeric reinforcement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single-layer reinforcement is used in the pad assembly, then the structure is simpler and cost is lower, but the durability is reduced and wear on the floor increases
Solution Approach 1:
The reinforcement is divided into multiple layers with different materials and functions. The first reinforcement layer provides initial structural support, while the second reinforcement layer with scallops provides additional durability and floor clearance. This segmentation allows each layer to specialize in specific functions, improving overall reliability without requiring a single complex component.
Solution Approach 2:
The pad assembly uses composite materials in the reinforcement layers - combining different material properties in each layer to achieve optimal performance. The first reinforcement layer uses one material composition while the second layer uses a different material composition, creating a composite structure that provides both durability and controlled flexibility to reduce floor wear.
2Reliability
If the reinforcement is made more rigid to maintain consistency, then polishing consistency improves, but wear on the floor increases due to lack of flexibility
Solution Approach 1:
Different regions of the reinforcement structure have different properties. The second reinforcement layer has scallops that create local flexibility zones where the reinforcement can flex to follow floor contours, reducing floor wear. Other regions maintain rigidity to ensure polishing consistency. This local variation in quality allows the structure to simultaneously achieve consistency and reduce harmful floor contact.
Solution Approach 2:
The reinforcement structure is designed to be dynamically adaptable rather than statically rigid. The scallops in the second reinforcement layer allow the structure to dynamically flex and conform to floor imperfections during operation, maintaining consistent polishing performance while reducing harmful floor wear through controlled movement.
3Adaptability or versatility
If the floor-facing reinforcement has high flexibility to accommodate floor imperfections, then floor contact improves, but wear on the reinforcement increases
Solution Approach 1:
The reinforcement function is segmented between two layers: the first reinforcement layer provides initial structural support and wear resistance, while the second reinforcement layer with scallops provides floor adaptation. This segmentation allows the first layer to bear the brunt of wear while the second layer focuses on adapting to floor imperfections, reducing overall reinforcement wear.
Solution Approach 2:
The first reinforcement layer acts as a protective cushion that absorbs wear and stress before they reach the second reinforcement layer. This beforehand cushioning protects the floor-facing second layer from excessive wear while still allowing it to flex and adapt to floor imperfections for improved floor contact.
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 multilayer reinforcement pad assembly extends the useful life of the pad by reducing wear and contact with the floor, ensuring consistent polishing or grinding performance and durability, while allowing greater floor contact with abrasive tools.
Implementation Method 1
the metallic reinforcement flexing due to floor imperfections
Implementation Method 2
the scallops or recesses of the metallic or floor-facing reinforcement used in the present pad assembly advantageously creates a clearance to the floor during pad and reinforcement flexure
Data Source
Figure 1~2
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AI summary
A polishing or grinding pad (21; 121; 221) with a multilayer reinforcement (41; 43; 141; 143; 241; 243) is provided. In one aspect, a floor polishing or grinding pad assembly employs a flexible pad (31; 131; 231), at least two reinforcement layers or rings with different characteristics, and multiple floor-contacting tools (71; 171; 271) such as abrasive disks. In another aspect, a workpiece polishing or grinding pad assembly includes a flexible and rotatable pad, a polymeric reinforcement layer (43; 143; 243) coupled to the pad and a metallic reinforcement layer (41; 141; 241) to which are coupled abrasive tools. In yet another aspect, a floor-facing reinforcement is more flexible than a pad-facing reinforcement which is more rigid.