Ceramic Die-Casting Mold Synchronous Cavity Control
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Solution Overview
Problem
Existing die-casting technologies for ceramic hollow bodies are limited in productivity and quality, unable to meet modern mass production requirements due to their design, which results in small numbers of pieces produced per unit time and long residence times of liquid slip in the mold.
Innovation Solution
A die-casting device with multiple movable die-casting molds forming multiple cavities, where all cavities are filled and emptied synchronously using a common drive and control system, allowing for simultaneous formation and removal of ceramic shards using compressed air, and a gripping device for uniform processing and handling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional die-casting devices with single or few cavities are used, then device complexity is reduced, but productivity is insufficient for mass production
Solution Approach 1:
The die-casting mold is divided into multiple cavities (2-6 cavities per mold) that can be simultaneously filled and emptied. Each cavity acts as an independent production unit, allowing parallel manufacturing of multiple ceramic hollow bodies in one cycle, thereby significantly increasing productivity while maintaining manageable device complexity through modular cavity design.
Solution Approach 2:
Multiple die-casting molds are combined in a single device, with all molds sharing common slurry supply lines and compressed air conveying systems. This merging of resources allows simultaneous operation of multiple molds without proportionally increasing system complexity, as the control and supply infrastructure is shared across all cavities.
2Productivity
If multiple die-casting molds with multiple cavities are used simultaneously, then productivity increases, but manufacturing precision may deteriorate due to difficulty in controlling filling uniformity
Solution Approach 1:
The device pre-establishes uniform slurry distribution through specially designed slurry conveying devices that deliver equal amounts of slurry to each cavity before filling begins. The mold cavities are also pre-configured with identical dimensions and orientations, ensuring that all ceramic hollow bodies experience the same forming conditions, thereby maintaining manufacturing precision across high-volume production.
Solution Approach 2:
The control device monitors and coordinates the filling process across all cavities, ensuring synchronized operation. By controlling the slurry supply to each cavity in a coordinated manner and maintaining consistent compression timing, the system achieves uniform quality across all produced pieces while maintaining high productivity through parallel processing.
3Manufacturing precision
If long residence time of liquid slip in mold is used, then manufacturing precision improves, but productivity decreases due to extended cycle time
Solution Approach 1:
The device employs periodic compression using compressed air conveying devices that deliver controlled air bursts to each cavity at precise intervals. This periodic action accelerates the forming process by periodically compressing the slurry to promote faster and more uniform shard formation, reducing the overall residence time required while maintaining high manufacturing precision through controlled compression cycles.
Solution Approach 2:
The system dynamically adjusts process parameters including slurry supply rate, compression timing, and air pressure during the forming cycle. By optimizing these parameters for simultaneous multi-cavity operation, the device achieves rapid yet precise shard formation in all cavities concurrently, reducing cycle time without sacrificing quality. The compressed air compression parameter is specifically tuned to accelerate forming while maintaining uniformity across all cavities.
4Productivity
If non-synchronous filling and emptying of molds is used, then device complexity is reduced, but productivity is limited by sequential processing
Solution Approach 1:
The slurry conveying device and compressed air conveying device serve multiple functions simultaneously: they supply slurry to all cavities, control filling timing, and perform emptying operations across all molds. This multi-functionality allows synchronous operation of multiple cavities without requiring separate control systems for each mold, thereby reducing overall device complexity while achieving high productivity through coordinated parallel processing.
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 approach enables high-quality, high-volume production of ceramic hollow bodies by ensuring consistent process parameters, reducing rejects, and minimizing the cycle time, thus addressing the limitations of existing technologies.
Implementation Method 1
activate a valve or a compressed air conveying device to simultaneously blow out residual slurry from all cavities using compressed air
Data Source
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AI summary
The invention relates to the production of ceramic hollow bodies, in particular ceramic bottles (9) or hand molds, by means of a ceramic die-casting process. In order to meet high quality requirements and simultaneously achieve a high production rate, it is proposed that at least two die-casting molds (2) be used for the production of the ceramic hollow bodies, each of which in turn has four mutually movable mold parts (21, 22, 23, 24) which, in the closed state, form several cavities (27). Slurry is introduced synchronously into all cavities of the at least two die-casting molds (2) and, after a predetermined period of time, liquid slurry is forced out again by means of compressed air in order to form a body (9) simultaneously in all cavities (27).