Inflatable Mould Containment for Ceramic Slip Casting
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Solution Overview
Problem
Existing ceramic sanitary ware manufacturing processes face challenges with mould deformation under high pressure slip casting due to transverse forces, leading to weighty and cumbersome containment devices that limit manoeuvrability and increase downtime, especially in systems requiring independent mould movement.
Innovation Solution
A mould system with inflatable elements and adjustable containment means, including frames and release mechanisms, allows for controlled force distribution and independent movement of mould halves, enabling efficient and safe handling across various geometries without the need for bulky containment structures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional rigid containment systems (frames) are used to contain transverse forces during slip casting, then mechanical safety is improved, but the mould system becomes heavy and cumbersome, limiting manoeuvrability and increasing downtime
Solution Approach 1:
The patent applies pneumatic containment by using an inflatable element filled with fluid under pressure to contain the transverse forces generated during slip casting. This replaces the traditional rigid mechanical frame with a pneumatic system that can adapt to force variations while maintaining mould stability, thereby reducing the overall system weight and improving manoeuvrability without compromising mechanical safety
Solution Approach 2:
The containment system transitions from a static rigid frame to a dynamic inflatable element that can adjust its pressure and volume in response to varying casting forces. This dynamic adaptation allows the system to maintain optimal containment while using lighter materials, reducing weight and improving the mould system's manoeuvrability between casting positions
2Force
If rigid containment frames are used to contain transverse forces, then force containment is improved, but the complexity of the device increases due to the need for bulky structures
Solution Approach 1:
The patent replaces the complex rigid frame structure with a simpler pneumatic system consisting of an inflatable element filled with fluid. This pneumatic containment mechanism can effectively contain transverse forces while requiring minimal structural support, thereby reducing device complexity and eliminating the need for bulky containment frames
Solution Approach 2:
The inflatable element acts as a flexible shell that can deform and adapt to the forces generated during casting. This flexible containment approach replaces rigid complex structures with a simple thin-walled element that maintains force containment through internal fluid pressure, significantly reducing device complexity
3Stability of the object's composition
If traditional fixed containment systems are used, then structural stability is improved, but the mould changing time increases due to complete dismantlement requirements
Solution Approach 1:
The inflatable containment element can be rapidly inflated or deflated to secure or release the mould, eliminating the time-consuming process of complete frame dismantlement. The dynamic nature of the pneumatic system allows for quick adjustment and mould changes while maintaining structural stability during the casting process through pressure control
4Ease of operation
If inflatable elements are used to contain transverse forces, then manoeuvrability is improved, but the containment effectiveness under high pressure may be compromised
Solution Approach 1:
The patent uses fluid-filled inflatable elements that can generate sufficient internal pressure to contain the high transverse forces generated during slip casting (typically 3-15 bar). The pneumatic system maintains force containment effectiveness while allowing the mould to be easily manoeuvred when deflated or at low pressure, combining manoeuvrability with effective force containment
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
This solution ensures mechanical safety and efficient operation by allowing mould halves to move freely, reducing downtime and enabling the use of lighter handling systems, while maintaining effective force containment during the casting process.
Implementation Method 1
an element inflatable with a fluid and designed, operating from externally of the mould, to cushion the forces generated by the pressure of the slip directed into the cavity
Implementation Method 2
control over the pressure of the fluid within the inflatable element can be adapted continuously to the pressure of the slip, so as to optimize the reaction and consequently avoid potential deformation of the mould
Data Source
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AI summary
Ceramic sanitary wares are cast using equipment (100) that comprises at least one mould (1) made up of two halves (2, 3) presenting relative cavities (2a, 3a) in which the cast item is formed, rendered capable of movement to and fro along a predetermined direction (A) toward and away from one another through the agency of a first actuator (4), in such a way that respective mating surfaces (2b, 3b) of the mould halves can be joined together or separated. Pressure forces acting on the mould halves (2, 3) from within are contained and controlled by a system (5) associated directly with the mould halves (2, 3), which comprises a mechanism (7) acting on the system (5) itself and on the halves (2, 3) of the mould (1) in such a way as to create a gap affording a free passage to the mould halves (2, 3) when drawn together and distanced one from another. In this way, at least one of the halves (2, 3) can be rendered independent of the containment and control system (5) for demoulding purposes.