Negative pressure modeling and demolding device

Abstract

The invention discloses a negative pressure modeling and demolding device, which comprises a base, a vibration worktable and a lifting damping device arranged on four corners of the vibration worktable, wherein the vibration worktable is connected with the base through the lifting damping device, sand box supports are respectively arranged on four lateral sides of the base, an adjusting bolt is arranged at the top end of each sand box support, and a cushion block is connected at the upper end of each adjusting bolt. Guide sleeves are respectively arranged on four lateral sides of the vibration worktable, and the sand box supports are sleeved into the guide sleeves and can slide in the guide sleeves. Two vibration motors are symmetrically arranged at the bottom of the vibration worktable. The negative pressure modeling and demolding device has a function of being capable of finishing two processes, namely modeling and demolding, so that allocation of a special demolding machine is omitted, investment is greatly reduced, energy consumption and labor are saved, device use ratio is improved, workshop production area is saved, production cost is reduced, and the negative pressure modeling and demolding device is especially suitable for large small-batch cast production.

Description

Technical field [0001] The invention relates to a special equipment in a V method casting production process. Background technique [0002] V method casting is a kind of vacuum sealing molding, also called "negative pressure molding method" or "decompression molding method". It is named after the initial "V" of the word "Vacuum" in English. The biggest advantage of it different from traditional sand casting is that it does not use adhesives. V method casting uses plastic film to seal the sand box, and draws out the air in the mold by a vacuum exhaust system. There is a pressure difference between the inside and outside of the mold, which makes the dry sand compact and form For the required cavity, the casting is solidified by core lowering, box closing, pouring and vacuuming, the negative pressure is relieved, and the casting sand is collapsed to obtain the casting. In the V method modeling process, the model to be cast is placed in the mold frame, covered with plastic film, and...

AI Technical Summary

Problems solved by technology

However, for large-scale and small-batch castings, the configuration of a special lifting machine will result in large investment, low equipment utilization, occupying the effective space of the workshop, and increasing production costs.

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