Powder Layer Trimming for Uniform Ceramic Tile Compaction
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Solution Overview
Problem
Existing devices for forming ceramic tiles face issues with non-uniform powder layer thickness and density due to trapezoidal-shaped sections, leading to faulty compacted layers and deformation, caused by mutual sliding friction with fixed containment edges.
Innovation Solution
A device with trimming means, such as fixed blades, removes lateral strips from the powder layer upstream of the compacting station to create a square-shaped section with uniform thickness, eliminating the need for fixed containment edges and reducing friction, allowing for uniform density and pattern preservation during compaction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If fixed containment edges are used to laterally contain the powder layer, then the powder layer maintains a rectangular shape, but sliding friction occurs between the edges and powder causing non-uniform thickness and density
Solution Approach 1:
The invention removes the fixed containment edges that cause friction problems, extracting the harmful element from the system. Instead of containing powder with fixed edges, the system allows free deposition and uses a moving belt to define the powder layer boundaries, eliminating the sliding friction source while maintaining rectangular shape through controlled deposition boundaries.
Solution Approach 2:
The invention transitions from static fixed containment edges to a dynamic system where the lower belt moves synchronously with the transport surface. This dynamic approach eliminates relative motion between containment elements and powder, preventing sliding friction while maintaining lateral containment during the compaction process.
2Manufacturing precision
If the powder layer is allowed to form naturally without containment edges, then sliding friction is eliminated, but the layer develops a trapezoidal section with non-uniform thickness
Solution Approach 1:
The invention performs preliminary shaping of the powder layer during deposition by defining rectangular deposition boundaries on the moving lower belt. This preliminary action ensures the powder layer maintains uniform thickness and rectangular shape before reaching the compaction zone, eliminating the need for post-deposition edge containment and preventing the trapezoidal distortion that would otherwise occur.
3Shape
If fixed containment edges are used to maintain rectangular shape, then the powder layer geometry is controlled, but the edges cause local deformation and density non-uniformity in the compacted layer
Solution Approach 1:
The invention extracts the harmful fixed containment edges from the system, replacing them with a moving belt system that defines rectangular boundaries during deposition without creating sliding friction. This elimination of fixed edges prevents the local deformation and density non-uniformity that would otherwise occur at the edges of the compacted layer.
Data Source
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AI summary
A device (100) for processing a layer (M) of powder material, comprising a slidable transport surface (106) adapted to support and advance the layer (M) of powder material, a compacting station (115) adapted to compact the layer (M) of powder material while it advances on the transport surface (106), and means (200) for trimming the lateral edges of the layer (M) of powder material upstream of the compacting station (115).