Feeder System Tipping Prevention in Separable Casting Moulds
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Solution Overview
Problem
In the production of separable casting moulds, particularly vertically separable moulds, the feeder system tends to tip during compaction, leading to non-uniform abutment and potential damage due to insufficient holding force from centring pins, especially under high pressure.
Innovation Solution
Incorporating tipping prevention elements spaced apart from the opening axis of the feeder system, which counteract tipping forces by generating counteracting forces or guiding the feeder element during compaction, ensuring uniform spacing and secure seating on the mould plate or pattern.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If centring pins are used to hold the feeder system during compaction, then the feeder system can be positioned, but the holding force is insufficient under high pressure causing tipping and non-uniform abutment
Solution Approach 1:
The invention divides the support function into multiple elements: centring pins for positioning and tipping prevention elements for counteracting tipping forces. This segmentation allows each element to specialize in its function, with the tipping prevention elements providing additional support points that distribute the compaction force and prevent tipping, thereby resolving the insufficiency of centring pins alone under high pressure.
Solution Approach 2:
The tipping prevention elements act as intermediary structures between the feeder system and the compaction force. These elements are positioned to intercept and counteract the tipping moments generated during compaction, mediating the interaction between the compaction pressure and the feeder system to prevent direct tipping and non-uniform abutment.
2Productivity
If the feeder system is designed with a passage opening for liquid metal flow, then the casting process can proceed, but the feeder system becomes susceptible to tipping during compaction
Solution Approach 1:
The tipping prevention elements are positioned in advance during the mould preparation stage to counteract the tipping forces that will arise during compaction. By pre-positioning these support elements at strategic locations, the system proactively prevents tipping before the compaction process begins, ensuring stable feeder orientation throughout the casting operation.
Solution Approach 2:
The invention addresses the tipping problem by introducing support in a different dimensional aspect - rather than relying solely on vertical centring pin support, the tipping prevention elements provide lateral and angular stabilization. This multi-dimensional support approach constrains the feeder system against tipping moments while maintaining the passage opening for liquid metal flow.
3Length of moving object
If the side wall of the passage opening is made deformable to reduce spacing, then the feeder element can be compacted, but this deformation may cause non-uniform compaction and potential damage
Solution Approach 1:
The invention applies different mechanical properties to different parts of the feeder element: the side wall is designed with localized deformability to reduce spacing, while the tipping prevention elements maintain rigidity to ensure uniform compaction. This local differentiation allows the side wall to compress where needed while other critical areas maintain their structural integrity and positioning function.
Solution Approach 2:
The tipping prevention elements are pre-positioned to guide and constrain the compaction process, ensuring that the deformable side wall compresses uniformly. By providing preliminary structural support and guidance during compaction, these elements prevent excessive or non-uniform deformation while still allowing the side wall to reduce spacing as intended.
Data Source
AI summary
An arrangement for use in the production of a separable casting mold, preferably of a vertically separable casting mold is disclosed. The arrangement can include (i) a mold plate and/or a mold pattern, (ii) a feeder system having a feeder element and having a feeder insert, wherein feeder element and feeder insert delimit a feeder cavity for receiving liquid metal. The arrangement also includes one or more tipping prevention elements which are designed to counteract tipping of the feeder system out of the opening axis about the first end of the feeder element when, in the event of the feeder system being acted on with a force acting parallel to the opening axis and in the direction of the first end, the side wall deforms and the spacing between the first and second ends is reduced, wherein the one or more tipping prevention element(s) are/is spaced apart from the opening axis.