Sliding Plate Mould Bottom for Green Brick Demoulding
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Solution Overview
Problem
Mould container presses face challenges in demoulding green bricks, especially when they are stuck to the bottom due to lack of ejectors, leading to misshapen or unusable bricks, particularly for waterstruck bricks that require a smooth surface and cannot be sand-covered, and for detached mould container parts where ejector application is complicated.
Innovation Solution
Incorporating sliding plates in the mould cavities that are slidable between filling and demoulding states, allowing air introduction between the brick and the mould bottom to prevent vacuum and applying a shear force for easier release, with the sliding plates configured to expose aerating openings during demoulding to facilitate the brick's detachment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If ejectors are applied in detached mould container parts for active pressing of green bricks, then demoulding efficiency is improved, but device complexity and ease of manufacture deteriorate
Solution Approach 1:
The invention extracts the ejector mechanism from the mould container part and relocates it to the press device. The press device includes an ejector that can be inserted into the mould cavity to actively press the green brick during demoulding, while the mould container part itself remains simple and ejector-free. This resolves the contradiction by maintaining high demoulding efficiency through active ejection while keeping the mould container part simple for easy manufacture.
2Ease of operation
If sand is applied to cover mould cavities for facilitating green brick release, then demoulding ease is improved, but surface quality of waterstruck bricks deteriorates
Solution Approach 1:
The invention introduces a movable bottom plate that can be displaced relative to the mould cavity during demoulding. This dynamic mechanism creates relative motion between the bottom plate and the green brick, reducing adhesion and facilitating release without requiring sand coverage. This resolves the contradiction by enabling easy demoulding through mechanical motion while maintaining smooth surface quality on waterstruck bricks.
3Adaptability or versatility
If detached mould container parts are used for easy exchange and format changes, then adaptability is improved, but demoulding difficulty increases due to lack of integrated ejectors
Solution Approach 1:
The invention segments the system into two independent parts: the simple, exchangeable mould container part without ejectors, and the press device with the ejector mechanism. This allows the mould container parts to be easily exchanged for different formats while the press device provides the active ejection function. The segmentation resolves the contradiction by maintaining adaptability through modular mould parts while ensuring easy demoulding through the press device's ejector.
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
The sliding plates provide a larger shear force and prevent vacuum formation, effectively releasing green bricks from the mould cavity, reducing the risk of sticking and ensuring a smooth, levelled surface, even for difficult-to-demould bricks like waterstruck or sand-covered ones, enhancing the efficiency of the demoulding process.
Implementation Method 1
the one or more than one opening defining an aerator that is configured to allow introduction of air between the bottom of the mould cavity and the green brick formed in the mould cavity in a demoulding state
Implementation Method 2
The sliding plate is slidable in the plane defined by said bottom between a filling state wherein the one or more than one opening defining the aerator is concealed from the mould cavity and the demoulding state wherein the one or more than one opening defining the aerator is moved sideward and exposed in the mould cavity
Data Source
Figure 1
Figure 2
Figure 3A
AI summary
Mould container part (2), comprising: one or more than one mould cavity (7) comprising a bottom (13) and one or more than one side wall (19); wherein at least a part of the bottom (13) comprises one or more than one sliding plate (20) that is slidable in a plane defined by said bottom (13) and that comprises one or more than one opening (21) to define an aerator (22) that is configured to allow introduction of air between the bottom (13) of the mould cavity (7) and the green brick (3) formed in the mould cavity (7) in a demoulding state, wherein the sliding plate (20) is slidable between a filling state wherein the one or more than one opening (21) is concealed from the mould cavity (7) and the demoulding state wherein the one or more than one opening (21) is moved sideward and exposed in the mould cavity (7) to thereby selectively allow introduction of air between the bottom (13) of the mould cavity (7) and the green brick (3). The invention further relates to mould container press device, comprising such a mould container part (2).