| 摘要 |
An apparatus for use in lost-foam type foundry operations for compacting sand within a foundry flask (17) having a pattern secured therein prior to pouring molten material into the flask (17). The compacting apparatus utilizes a pair of horizontally displaced driven shafts (25, 26) having mechanically variable eccentric weights (28, 29) affixed thereon for generating a predetermined oscillating force upon rotation of the shafts (25, 26). The variable eccentric weights (28, 29) include a first disk shaped weight (28) rigidly affixed to a hub (40), which is in rotational engagement with the shaft (25, 26), and a second disk shaped weight (29) which is adjustably affixed to the first disk shaped weight (28) for rotation therewith. Rotation of the shafts (25, 26) generates a horizontal and a vertical component of compaction force, which is applied to the flask (17) having a pattern secured therein.
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