Good foundry stuff going on here. We’ve got an almost complete top loading shell core blower getting close to being operational. Originally had a pretty cruddy die set mounting system, so we replaced this with a largish mechanical press type we had hanging around. This gives us a lot more precision that we will need for the very small coreboxes as part of its intended use. Because it of a plain bush design, we used motorcycle fork gaiters plus a heat shield (blue) to provide further protection.
Some of the coreboxes will have a complex shaped part line, so matching is important. Clearly, the die set is opened and closed with the horizontal red air cylinder and within the die set can be seen two flanged aluminium blocks which are yet to be machined to form the actual corebox. Not shown is the ejector mechanism that will slightly eject the cores from both the corebox halves when it is opening. These will be electrically heated and the temp controlled with the T/C temp controllers in the clear faced control panel. The shell core sand is stored in the large ex 9 kg LPG bottle, and dispensed into the (unpainted) hopper when it is swung directly under the valve under the LPG bottle. The hopper will contain quite a bit of sand, so it won’t have to be filled every cycle. So, when the corebox is to be filled, the hopper will be swung around so that it is directly above the corebox. Then the vertical air cylinder clamps down on the hopper forcing it hard against the corebox. Then compressed air is applied into the hopper, forcing the sand into the vented corebox. Not sure, but I reckon the cycle time will be around 30 sec or so.
Have a good Xmas guys.
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