Mold Squeeze Force Control for Match Plate Integrity
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Solution Overview
Problem
Conventional methods for making upper and lower molds often result in damaged molds due to differences in advancing speeds, squeeze forces, pattern shapes, thickness, and sand densities between the upper and lower squeeze means, leading to uneven forces and potential damage to the match plate.
Innovation Solution
The method involves a molding unit with a cope and drag flask holding a match plate, separate squeeze members for the upper and lower molds, and a control system using measuring means and a command transmitter to adjust the squeeze forces within a tolerance, ensuring balanced force application during the molding process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional squeeze means are used for upper and lower molds, then the molding process can be completed, but the mold may be damaged due to uneven squeeze forces
Solution Approach 1:
The squeeze means is divided into separate upper and lower squeeze members, each independently controllable. This segmentation allows individual adjustment of squeeze forces applied by the upper and lower members to the match plate, enabling balanced force application that prevents mold damage while maintaining reliable molding operation.
2Ease of manufacture
If the upper and lower squeeze means advance at different speeds or apply different forces, then the molding process is simpler, but the match plate may be damaged
Solution Approach 1:
The system incorporates sensors that detect the position and force application of the upper and lower squeeze members during the molding process. This feedback mechanism enables real-time monitoring and adjustment of squeeze forces, ensuring that both members apply balanced forces to the match plate even when advancing at different speeds, thereby preventing match plate damage while maintaining process simplicity.
3Adaptability or versatility
If there are differences in sand density and pattern shape, then the molding process is more flexible, but the squeeze force balance is compromised
Solution Approach 1:
The upper and lower squeeze members are designed with dynamic adjustability, allowing their squeeze forces to be independently controlled and adjusted during the molding process. This dynamic control compensates for variations in sand density and pattern shape differences, maintaining squeeze force balance despite the flexibility to handle different molding conditions and materials.
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 prevents mold damage by maintaining balanced squeeze forces, ensuring the upper and lower squeeze members move forward under well-balanced conditions, thereby preventing wraps or damage to the match plate.
Implementation Method 1
a sand-blowing unit, wherein molding sand is blown through an sand filling port (sand blowing nozzle) for blown sand into a pair of cope and drag flasks
Data Source
AI summary
A method of controlling the operation of an apparatus for making an upper and a lower mold and the apparatus therefore that prevents a mold from having a wrap or a match plate from being damaged. The apparatus controls the forward movement of an upper and a lower squeeze member such that when each moves forward to the match plate by a squeeze device, the difference in the squeeze forces imparted to the upper squeeze member and the squeeze force imparted to the lower squeeze member, is kept within the predetermined tolerance.