Moveable Liner Plate Mold for Concrete Block Texture Retention
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Solution Overview
Problem
Existing concrete block molds face challenges in maintaining texture patterns on block surfaces due to the vertical ejection mechanism, which can cause patterns to be stripped off, and the use of cam mechanisms or pistons results in insufficient energy for sidewall retraction or increased wear, respectively.
Innovation Solution
A mold assembly with moveable liner plates and a gear drive assembly that allows for controlled movement of the liner plates in and out of the mold cavity, reducing wear and enabling the creation of textured surfaces by retracting the plates before block removal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a cam mechanism with spring is used to move the sidewalls, then the sidewalls can be moved inward, but the energy stored in the spring may be insufficient to retract the sidewall if it sticks to the concrete
Solution Approach 1:
The sidewalls are made dynamically movable rather than fixed, allowing them to be retracted during block ejection. The system transitions from a static mold to one where the sidewalls can change position based on operational requirements, resolving the contradiction by enabling reliable retraction through controlled movement.
Solution Approach 2:
The functional requirement of sidewall movement is extracted from the traditional cam-spring mechanism and implemented through a separate drive assembly that independently controls liner plate movement. This allows the sidewalls to be moved reliably without depending on spring energy storage.
2Ease of operation
If a piston is used to extend and retract the sidewall, then the sidewall can be moved, but an enormous amount of pressure is exerted directly on the piston shaft causing increased wear and shortened life
Solution Approach 1:
A drive assembly with drive elements acts as an intermediary between the actuator and the liner plate. This intermediary mechanism distributes and redirects forces, preventing direct pressure on a single shaft and reducing wear while maintaining the ability to move the sidewalls reliably.
Solution Approach 2:
The system uses dynamic drive elements that can move and adapt during operation, allowing force distribution across multiple components rather than concentrating pressure on a static piston shaft. This dynamic approach extends component life while maintaining operational capability.
3Device complexity
If the sidewalls remain fixed during block ejection, then the mold structure is simple, but the texture patterns on the sidewalls are stripped off during vertical ejection
Solution Approach 1:
The liner plates are made dynamically movable, allowing them to be retracted from the mold cavity before block ejection. This dynamic adjustment preserves texture patterns on the sidewalls while maintaining relatively simple mold structure through the use of movable rather than fixed components.
Data Source
AI summary
A mold assembly for manufacturing concrete blocks and which is adapted for use in a concrete block machine. The mold assembly includes a plurality of liner plates forming at least a first mold cavity, wherein at least a first liner plate is moveable, and a drive assembly. The drive assembly includes a first drive element having a first end and coupled to the first moveable liner plate proximate to a second end, and an actuator assembly. The actuator assembly includes a second drive element selectively coupled to the first drive element proximate to the first end, wherein the actuator assembly is configured to drive the second drive element along a first axis so as to cause at least the second end of the first drive element to move along a second axis and cause the first moveable liner plate to move toward and away from an interior of the first mold cavity.