Concrete Block Mold Ribs for Roughened Shoulders
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Solution Overview
Problem
Existing molds for producing concrete blocks with roughened surfaces are either too aggressive for modest roughening, resulting in unsuitable features for strength and wearability, or lack the desired aesthetic when scaled down for finer textures, and there is a need for a method to create a desirable surface finish without mechanical splitting.
Innovation Solution
A mold design featuring concave vertical shoulder forming sections with recesses and ribs that extend across the width of the mold, allowing for the formation of rounded, roughened shoulders on dry cast concrete blocks, enabling a more controlled and aesthetically pleasing surface finish during the molding process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If molds are designed to produce pronounced roughening, then a desirable surface finish is achieved, but the features become too delicate and lack strength and wearability when scaled down for modest roughening
Solution Approach 1:
The patent applies local quality by creating recesses with ribs only in specific locations where roughening is desired (the vertical shoulders), while other portions of the mold maintain smooth surfaces. This allows the mold to produce modest roughening in targeted areas without requiring the entire mold structure to have delicate, strength-compromising features. The ribs are strategically positioned to provide the necessary surface texture while maintaining overall mold robustness.
Solution Approach 2:
The patent changes the geometric parameters of the mold features by creating recesses that extend upward between 25%-75% of the side wall height, with ribs having specific width and spacing parameters. These controlled parameter changes allow for modest roughening that maintains structural integrity, avoiding the need for aggressive, deep recesses that would compromise mold strength.
2Manufacturing precision
If mechanical splitting is used to create roughened surfaces, then a split rock appearance is achieved, but processing costs increase
Solution Approach 1:
The patent applies preliminary action by forming the roughened surface features directly in the mold during the concrete block manufacturing process. The recesses and ribs are built into the mold structure, so the roughening occurs automatically as the concrete is poured and cured, eliminating the need for subsequent mechanical splitting operations. This preliminary formation of surface features significantly reduces processing costs while achieving the desired split rock appearance.
Solution Approach 2:
The patent extracts the roughening function from the post-manufacturing mechanical splitting process and transfers it to the molding stage. By incorporating recesses and ribs directly into the mold, the surface texturing is performed as an integral part of block formation, removing the separate, costly mechanical splitting step entirely.
3Manufacturing precision
If modest roughening is applied to visible surfaces, then aesthetic appeal is enhanced, but the mold requires more delicate features that reduce wearability
Solution Approach 1:
The patent applies segmentation by dividing the mold surface into distinct functional zones: recessed areas with ribs for roughening, and non-recessed areas for smooth surfaces. This segmentation allows modest roughening to be applied only where aesthetically necessary (vertical shoulders), while other portions of the mold maintain simple, robust structures. The segmented design achieves desired surface texture without requiring the entire mold to have complex, delicate features.
Data Source
AI summary
A mold for making dry cast concrete blocks includes a pair of vertical shoulder forming sections, one along each of the opposite sides of the mold to form vertical front shoulders of a block. Each shoulder forming section has a shoulder roughening arrangement to result in molded, roughened shoulders of the block. Methods of making such blocks and the resulting block are included.