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Abstract: The sand compaction mechanism of air impact molding
machine combined with an air-pushed contour squeeze head, which was
recently invented, is demonstrated. For the new machine, air impact
compaction and impact compaction of the air-pushed contour squeeze head
are simultaneously carried out, and these two types of compaction are
performed at the same working place, in the same working procedure, and
with the same compressed air power. The process and mechanism of sand
compaction are elucidated. The experimental results indicate that the
sand compaction effects of this new type of air impact molding machine
are ideally perfect, high and uniform mold compactability being
obtained. This new air impact molding machine completely overcomes the
disadvantages of the present single air impact molding machines, and
greatly extends the application scopes of air impact molding technology.
And it is a new molding machine of simple design, high speed, excellent
efficiency, lower energy consumption and smaller investment.
Key words: Air impact Air push Contour squeeze head Molding machine
CLC No: TG231.65
国家自然科学基金(50175075)和辽宁省教委科研基金(9806211055)资助项目.
Received 20020409, received in revised form 2001225
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