Resilient Insert Mold for Concrete Block Release
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Solution Overview
Problem
Concrete blocks with irregular surfaces, such as those mimicking natural stone, are difficult to release from conventional molds due to undercuts, requiring significant manual labor and increasing manufacturing costs, especially for large blocks.
Innovation Solution
A method and apparatus using a rigid support frame with a resilient insert that allows the insert to fall freely from the frame when inverted, facilitated by loose securing of the insert's edges to the frame, enabling easy removal of cured blocks with textured surfaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If conventional rigid molds are used to form concrete blocks with irregular surfaces, then the block shape and natural stone appearance are achieved, but the block cannot be easily released from the mold due to undercuts
Solution Approach 1:
The mold is divided into two functional parts: a rigid support frame that maintains structural integrity and a resilient insert that provides release capability. The insert is segmented from the frame and can independently deform to allow block removal while the frame remains stable.
Solution Approach 2:
The insert material properties are changed to be resilient and flexible, allowing it to deform under the weight of the block and return to its original shape. This parameter change in material flexibility enables the insert to distort and release the block when the form is inverted, solving the release problem while maintaining shape fidelity.
2Ease of operation
If manual disassembly of form walls is used to release blocks, then blocks with irregular surfaces can be removed, but significant manual labor is required increasing manufacturing costs
Solution Approach 1:
The mold system is designed to release the block automatically through gravity when inverted. The resilient insert self-distorts under the block's weight and self-releases without requiring manual intervention, making the system self-serving and eliminating labor-intensive operations.
Solution Approach 2:
The manual mechanical disassembly operation is replaced by a passive gravitational system. Instead of workers manually separating form walls, the inverted form allows gravity to naturally separate the block from the mold through the resilient insert's deformation, substituting human mechanical action with a gravity-based mechanism.
3Ease of operation
If form walls are hinged to pivot away from the block, then blocks can be released, but the device complexity increases and manual labor is still required
Solution Approach 1:
The release function is extracted from the rigid frame structure and assigned to a separate resilient insert component. This extraction allows the insert to handle the release mechanism independently through its material properties, while the frame maintains its simple supportive structure without complex hinged mechanisms.
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
Enables efficient release and transportation of concrete blocks with complex shapes by allowing the resilient insert to distort and release the block when the form is inverted, reducing manual labor and manufacturing costs while maintaining the natural appearance of stone-like surfaces.
Implementation Method 1
When the form is turned upside down, a sufficient relief angle is provided between the frame and the insert to allow the insert to fall freely from the frame
Implementation Method 2
The weight of the block causes the resilient insert to distort and bend away from sides of the block, allowing the block to fall freely from the insert
Data Source
AI summary
A method and apparatus for forming a concrete block in form having a resilient insert forming a cavity in which the block is cast and a rigid support for the resilient insert. After the block has cured, the form is inverted. One or more areas of the insert are tethered to the support so that at least a portion of the insert can fall a short distance from the support. The weight of the cast block sufficiently deforms the insert to allow the block to fall free from the insert. When the form is again inverted to its upright position, the insert falls back into the support and returns to its original shape.