| 摘要 |
PROBLEM TO BE SOLVED: To provide a load adjusting mechanism for powder and granules used as a raw material for a mold, in which the powder and the granules are hardly leaked from the periphery of a shutter mechanism arranged between a hopper and a blow head. SOLUTION: The load adjusting mechanism is provided with: a blow head 7, which accumulates and temporarily stores resin-coated sand supplied from a hopper 30, and which supplies the sand to a metal mold 9 by a predetermined quantity; a shutter 19 disposed midway in a supplying passage unit 13 (a cylindrical body 15) for supplying the sand from the hopper 30 to the blow head 7; and an air tank, which supplies high-pressure gas into the blow head 7. Under a condition that the supply of the sand from the hopper 30 to the blow head 7 is shut off by the shutter 19, high-pressure air is supplied from the air tank to supply the sand from the blow head 7 to the metal mold 9. A pressure release unit 24 (a cushion plate 28) is disposed in the cylindrical body 15 in order to block direct flowing down of the sand in the direction to the blow head 7. COPYRIGHT: (C)2005,JPO&NCIPI
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