Formwork Panel Corner Rounding for Removal Ease
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Solution Overview
Problem
Current formwork systems for vertical castings face difficulties in easy removal and manual handling due to their quadrangular shape and sharp edges, which lead to pressure concentration and increased labor during disassembly, and the panels' considerable weight without grip elements.
Innovation Solution
A panel design with partially sharp edges and recesses at the corners, allowing for lever-based removal and grip profiles for easier handling, featuring a metallic frame with a wood plane and perforated crossmembers for accessory connections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If panels are made with sharp edges and quadrangular shape, then structural simplicity and ease of manufacture are improved, but pressure concentration occurs during casting and removal becomes difficult
Solution Approach 1:
The patent applies curvature by replacing sharp edges with rounded edges at the corners of the panel. This geometric modification distributes the pressure more evenly during concrete casting and facilitates easier removal of the panel after casting, directly resolving the contradiction between manufacturing simplicity and removal ease.
Solution Approach 2:
The patent applies local quality by modifying only the corner regions of the panel while maintaining the overall quadrangular shape and simple construction. The rounded edges are localized to the corners where pressure concentration occurs, preserving the simplicity of the rest of the panel structure while eliminating the harmful pressure concentration effect.
2Device complexity
If panels are made with quadrangular shape and sharp edges, then structural simplicity is improved, but handling difficulty increases due to weight and lack of grip elements
Solution Approach 1:
The rounded edges provide natural grip surfaces that reduce sliding and increase friction, making the panels easier to handle manually. This curvature modification adds no structural complexity while significantly improving handling ease.
Solution Approach 2:
The panel design uses its own geometric features (rounded edges) to provide grip elements without requiring additional accessories or complex structures. The panel serves itself by incorporating handling features directly into its basic geometry.
3Ease of manufacture
If panels are made with sharp edges, then manufacturing simplicity is maintained, but pressure concentration hinders removal during disassembly
Solution Approach 1:
The rounded edges eliminate the sharp corners that cause pressure concentration during concrete casting. This geometric change distributes stresses more evenly across the panel corners, preventing the harmful pressure concentration effect while maintaining manufacturing simplicity.
Solution Approach 2:
The patent converts the potential harm of corner regions (where pressure concentration occurs) into a benefit by rounding them. The rounded corners actually reduce the harmful pressure concentration effect, turning a problematic feature into a beneficial one for both casting and removal operations.
Data Source
Figure 1a~1b
Figure 2a~2b
Figure 3
AI summary
A panel (10) for formwork for vertical castings, comprising: - a frame (11) for supporting a plane (12), the frame (11) comprising two end posts (13a, 13b) and two end crossmembers (14a, 14b), the two end crossmembers (14a, 14b) extending between two end posts (13a, 13b), - the plane (12), associated with a first portion of the frame (11), to be directed toward the inside of the formwork, the frame (11) forming a quadrangular external perimetric border for the panel (10), the plane (12) having an external perimetric border that substantially coincides with the external perimetric border of the frame (11); the panel (10) has, at the comers (15) of the perimetric border, at least some of the edges (16) that are only partially sharp.